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2006 Vol. 22, No. 4

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Investigation on incidence of geriatric depression in rural community of Anhui province
MA Suisui, QIN Xia, CHEN Ruoling,
2006, 22(4): 385-386. doi: 10.11847/zgggws2006-22-04-01
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  Objective   To understand the incidence of geriatric depression and explore the risk factors of geriatric depressions in rural community of Anhui countries.   Methods   1236 non-depressed elderly of the study on rhe prevalence of depression among the elderly was followed up with one-yearinterval by using the Geriatric Mental State Schedule(GMSA GECAT)and Minimum Data Set(MDS).The data were analysis and by SPSS.   Results   The incidence of depression among the elderly was 7.2%.χ2 analysis and Multinomial Logistic Regression analysis showed that there was sig nificantly difference between the male and female(P < 0.05), but the incidence of geriatric depression between different age, marital status, job and education degrees didn't have significant difference.Gender was risk factor of geriatric depression in the rural community(P < 0.05, (RR: 1.68, 95% CI 1.07~2.64).   Conclusion   The incidence of geriatric depression is higher than what is expected.Female elderly is the high-risk population of geratric epression in the rural community and when interventions are maken, they should be focusd on.
2006, 22(4): 386-387. doi: 10.11847/zgggws2006-22-04-02
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2006, 22(4): 388-390. doi: 10.11847/zgggws2006-22-04-03
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2006, 22(4): 390-391. doi: 10.11847/zgggws2006-22-04-04
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Analysis on related factors with participation in communal physical examination among mid-aged and aged population in Shanghai city
ZHOU Lifeng, LIU Xiaoqin, GUO Liyan,
2006, 22(4): 392-393. doi: 10.11847/zgggws2006-22-04-05
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  Objective   To find the related factors influencing the participation in the communal physical examination among the mid-aged and aged in Shanghai.All these would become a basis for better communal health services supply to improve the utilization of the services.   Methods   2 972 subjects were selected and informed to participate in the communal physical examination by cluster sampling.1 404 subjects participated in the physical examination, while 1 568 didn't.Among those who didn't participate in the examination, 372 were sampled a trandom to know the reasons for not participating in the examination.   Results   Except that 21.45% subjects hadn't been informed, the main reasons for not participating in the examimation were: having no time(35.38%), living far away form the location of the examination(11.97%), thinking oneself to be very healthy and having no interestin the examinatiion(10.03%)having had physical examination recently(9.19%)and not being able to par ticipate due to illness(2.51%).The demog raphic factors relating to participating in the communal examination mainly included age, gender, marital status, profession and income.   Conclusion   For the sake of providing more effective services to the mid-aged and aged in the community, the problem of unfitted time and location should be solved, and their knowledge of health care should be improved as well.
2006, 22(4): 394-395. doi: 10.11847/zgggws2006-22-04-06
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2006, 22(4): 395-396. doi: 10.11847/zgggws2006-22-04-07
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Investigation on risk factors of hypertension in cities of Guangxi Zhuang Autonomous Region
MENG Xiaoyu, WEI Bo, CHENG Naying,
2006, 22(4): 397-398. doi: 10.11847/zgggws2006-22-04-08
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  Objective   To analyze the risk factors of middle and old age patients of hypertension in cities of Guangxi, and to seek controlling strategy and intervene measurement of hypertension and proving scientific data for government.   Methods   Through multistage and stratified sampling, 7 881 residents from cities of Guangxi were chosen and surveyed by questionnaire and physical check of hypertension.   Results   The standardized prevalence rate of hypertension for middle and old agegroup in cities of Guangxi was 19.38%, and its prevalence rate was obviously up by age; Though Logistic regression, eight factors of occupation, family history, body mass index(BMI), waist-hipratio, blood fat and blood sugar were close to hypertension occuring, especially waist-hip ratio was the closest of all(OR=11.287).   Conclusion   The above risk factors should be considered when drawing the plan of hypertension control and prevention, choosing the strategy which would come to both all people and high risk group, and carrying out all-over control and prevention of hypertension in community.
Analysis on depression symptom of elderly and middle-aged people and its relationship to some relevant factors
LI Yingchun, HU Chuanlai, TAO Xingyong,
2006, 22(4): 398-399. doi: 10.11847/zgggws2006-22-04-09
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  Objective   To study prevalence rate of depression symptom and its relationship to family function and other factors of the elderly and middle-aged people in communities.   Methods   Cluster sampling was used to sample 304 residents aged 55 or over, and their depression symptom and family functions were evaluated with self-Rating Depression Scale(SDS) and APGAR repectively.   Results   The prevalence of depression symptom was 21.4%.There were significant differences between subgroups in SDS mean score and prevalence of depression symptom which were classified by family function, support, age, chronic disease, spouse, and it also showed that depression symptom related to the above factors by single-variable and multivariable Logistic regression.   Conclusion   Prevention and cure of depression could be more effective by improving family function, enhancing self-support, controlling chronic disease, and taking other relevant measures.
2006, 22(4): 400-401. doi: 10.11847/zgggws2006-22-04-10
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2006, 22(4): 402-403. doi: 10.11847/zgggws2006-22-04-11
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Analysis on risk factors of angina and miocardial infarctin in elderly people
FENG Kang, HE Yao, NI Bin,
2006, 22(4): 403-404. doi: 10.11847/zgggws2006-22-04-12
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  Objective   To investigate the distribution and the differences of the risk factors of angina and miocar dial infarctin(MI)in elder ly.   Methods   In a cross-sectional survey for angina and MI, 2 126 sunjects were selected from a clustered sample of the total population in 94 residential communities on the Wanshulu area, Beijing.Astandardized questionnaire was designed to collect information on the demographic characteristics.   Results   The analysis of adjusted forward Logistic: the risk factors of angina and MI were smoking, higher body mass index(BMI), higher platelet aggregation rate, family history of coronary heart disease(CHD), the history of hypertension an current smoking, plasma fibrinogen respectively.And there were some differences between angina and MI.   Conclusion   BMI, family history of CHD, history of hypertension and the plasma fibrinogen are risk factors of angina or MI.
2006, 22(4): 405-406. doi: 10.11847/zgggws2006-22-04-13
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2006, 22(4): 406-406. doi: 10.11847/zgggws2006-22-04-14
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2006, 22(4): 407-407. doi: 10.11847/zgggws2006-22-04-15
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Effect of organic pollutants from J river on hepatic and renal toxicity of rats
LI Peng, CUI Zhihong, LIU Shengxue,
2006, 22(4): 408-410. doi: 10.11847/zgggws2006-22-04-16
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  Objective   To investigate the hepatic and renal toxicity of organic pollutants from J River in rats.   Methods   Organic extract was collected with method of solid phase extraction.At 4, 24, 144 L/(kg·bw)doses of pouring into stomach, patholo gical changes, hepatic and renal function and lipid perox idation were studied in subacute tox icity test(14 d).   Results   In the 144 L/kg dose group, vacuolar degeneration was found both in liver and kidneys.Values of aspartate transaminase (AST), uric acid(UA)and trigly ceride(TG)in serum increased greatly.High levels of total superoxide dismutase(T-SOD)activ ity and malondialdehyde(MDA)were detected in the two or gans.   Conclusion   In the higherex perimental dose, organic extract from J River has potential toxicity of the liver and kidney, and lipid peroxidation may be one of the mechanisms of the impairing.
2006, 22(4): 410-410. doi: 10.11847/zgggws2006-22-04-17
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Effect of hepatitis B virus intrauterine infection on growth and development of neonates
XU Yuanyong, MEN Ke, SHAO Zhongjun,
2006, 22(4): 411-412. doi: 10.11847/zgggws2006-22-04-18
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  Objective   To assess the growth status of 214 neonates of hepatitis B virus(HBV)carrying pregnant women, and to study the effect of HBVintrauterine infection on the growth and development of neonates.   Methods   After delivery, the weight, body length, head circumference and chest circumference of the neonates were measured.Among 214 neonates, those infected with HBV by intrauterine infection were selected as intrauterine infection group, with the rest as non-infection group.Growth statuses of 214 neonates were evaluated using Zscores.Data was analyzed by SPSS and T test were applied to analyze the effect.   Results   Among 214 neonates, there were only three neonates with Zscores of H/Aless than2, who was diagnosized as growth retardation.There was no significant difference in Zscores of W/A(t=0.21, P=0.832), H/A(t=1.60, P=0.122), head circumference(t=1.03, P=0.311)and chest circumference(t=0.89, P=0.372)of neonates between two groups.Z scores of head circumference(t=1.03, P=0.311)and chest circumference(t=0.89, P= 0.372)of the neonates in male group were significantly higher than those in female group.   Conclusion   The growth status of 214 neonates of HBV carrying pregnant women was quite well.The effect of HBV intrauterine infection on the growth and development of neonates had not been found.
Comparison of toxicities among different ornamental materials
SHANG Lanqin, LI Xiaoqi, WEI Xuetao,
2006, 22(4): 413-414. doi: 10.11847/zgggws2006-22-04-19
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  Objective   To compare the immunotoxicity and genotoxicity of different ornamental materials in mice.   Methods   The animals were exposed to the model cabinets ornamented with materials of good or poor quality 3 hours everyday for 4 weeks.At the 2nd, 7 th, 14 th and 28 th day, immunotoxicity was measured with macrophage swallow assay, and plaque formation assay and genotoxicity was measured with micronucleus assay.   Results   The volatilization of ornamental materials of both good and poor quality induced the abnormality of macrophage swallow, caused a decrease of the number of plaque form cells, caused a decrease of body weight, thymus and spleen weight and the number of periphery white blood cells.The number of plaque form cells was lower in the exposed groups than that in the control groups.An increase of micronucleus rate was observed in exposure groups.The toxicities induced by ornamental materials of both good quality were more obvious and protracted.   Conclusion   It is feasible to use the biomarkers of immunotoxicity and genotoxicity for the evaluation of ornamental materials.Both chemical and biological evidences are needed to estimate the security of ornamental materials.
Distribution and characterization of Shiga toxin-producing E.coli from different samlpes
LI Mingcheng, LI Fan
2006, 22(4): 415-416. doi: 10.11847/zgggws2006-22-04-20
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  Objective   To explore the distribution and character ization of Shig a tox in-producing E.coli from animal feces, meat food and contaminatemud.   Methods   Routine method was used to isolate E.coli, strains of Shiga tox in1-2 producing were detected by PCR assay; and types were analyzed by ser ological technique.   Results   Of all samples, 8 isolates were identified as Shiga toxin-producing E.coli, one strain was identified as EHEC O157:H7, two strains as EHEC O157:H7 with no Shiga tox in and five strains as no-EHEC O157:H7 with producing Shiga toxin.   Conclusion   ST ECcould be separated from different samples, and there was slightly distance between types and pathogenic factors.
2006, 22(4): 416-416. doi: 10.11847/zgggws2006-22-04-21
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Effect of meteorological factors on epidemic situation of aspiratory infectious diseases in drought area
SHI Hailong, QU Bo, GUO Haiqiang,
2006, 22(4): 417-418. doi: 10.11847/zgggws2006-22-04-22
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  Objective   To investigate the relationship between meteorological factors of drought and incidence of common infectious diseases.The Back-Propagation artificial neural network model was built and evaluated.   Methods   The data of incidence of infectious diseases and meteorological factors in drought area from 1981 to 1994 were collected and analyzed by using SPSS for windows, version 10.0;The model of back-Propagation artificial neural network was built by Matlab, version 6.5.   Results   The incidences of epidemic was negative correlated to annual mean atmospheric pressure, annual mean precipitation, and was positive correlated to annual mean evaporation.The incidence of pertussis was negative correlated to annual mean atmospheric pressure and positive correlated to annual mean evaporation.The MER and R2 of cerebrospinal meningitis and pertussis model were 1.73% and 1, 7.74% and 0.990 0 respectively.The forecasting precision of cerebrospinal meningitis and pertussis model was 5.88% and 59146% respectively.   Conclusion   The incidence of aspiratory infectious diseases was correlated to atmospheric pressure, precipitation, and evaporation.The BP neural network model fitted very well in the study of aspiratory infectious diseases.
Study of community interventions on intelligence development of infants
LIU Xiaoqin, ZHOU Lifeng, YANG Jie,
2006, 22(4): 419-420. doi: 10.11847/zgggws2006-22-04-23
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  Objective   To assess the effect of intelligence interventions on the infants and their families in the community.   Methods   309 newborns and their families were sampled randomly in Xuhui district, Shanghai.They were asked to complete the baseline questionnaires.The newborns intelligence quotients were measured by developmental Screening Test(DST) for Child Under Six, and the physical examinations were conducted at the same time.The new borns were randomly assigned to intervention group(156 cases)and control group(153 cases).The infants and their families were followed up after 6 months.intervention.Aquestionnaire of follow-up was completed by face to face interview at the communities.Infant intelligence quotients were measured and had their medical check-ups.   Results   After 6 months.intervention, the means of Mental Index(MI)and Development Quotient(DQ)in the intervention group were respectively 5.96 and 9.80 higher than those in the control group after adjustment to the baseline scores.   Conclusion   Early intelligence intervention in the community promotes the intelligence development of infants.
Expression of lymphocyte surface CCR5 in HCV and HIV infection
KANG Hui, WANG Yanan, FAN Xia,
2006, 22(4): 421-422. doi: 10.11847/zgggws2006-22-04-24
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  Objective   To investigate expression and significance of CC-chemokine receptor 5(CCR5)in HCV monoinfection, HIV mono-infection and HCV/HIV co-infection.   Methods   The surface expression of CCR5 on CD4+ Tcells and CD8+ Tcells from PBMC isolated from HCV infection(n=21), HIVinfection(n=14), HCV/HIV co-infection(n=28)and normal control(n=30)by flow cytometry.   Results   The expression of CCR5 on CD4+ and CD8+ T lymphocytes increased significantly in HIV mono-infection(P < 0.01), but decreased significantly both in HCV mono-infection and HCV/HIV co-infection(P < 0.01).   Conclusion   The surface expression of CCR5 on lymphocytes increased with HIV infection, decreased with HCV infection.In HCV/HIV co-infection, HCV maybe effect on the expression of CCR5 on lymphocytes.
2006, 22(4): 422-422. doi: 10.11847/zgggws2006-22-04-25
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Analysis on risk factors of smoking behavior among rural middle school students
YAO Jie, YE Dongqing, ZHU Jimin,
2006, 22(4): 423-424. doi: 10.11847/zgggws2006-22-04-26
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  Objective   To explore the status and risk factors of smoking among rural middle school students.   Methods   By stratified cluster sampling, 4 384 middle school students from rural area of Hefei city were chosen and surveyed with questionnaire.   Results   Total rate of smoking was 29.0%.There were significant difference between different gender and grade.Logistic regression showed that knowing the hazard of cigarette toward adolescents, regarding smoking as a bad habit, never smoking could prevent the students from smoking, while male, higher grade, regarding male's smoking as graceful behavior and could help to sociality, taking smoking as entertainment, friend smoking, father smoking, teacher smoking on classes being the risk factors.   Conclusion   Comprehensive smoking intervention program should be carried out in family, school and whole society.
Protective effect of soy isoflavones combined with calcium and bone collagen on bone quality in postmenopausal osteoporosis
XU Jiqu, ZHAO Yaowu, ZHU Qinghua,
2006, 22(4): 425-426. doi: 10.11847/zgggws2006-22-04-27
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  Objective   To observe the effect of soyisoflavones combined with calcium and bone collagen on bone mineral density(BMD)and biomecthanics in ovariectomized(OVX)rats.   Methods   Female rats except sham group were ovar iectiomized.All rats were administered with different diets for 12 weeks.BMD and indexes of biomechanics were detected in grouped rats including OVX, sham, low dose combination, middle dose combination, high dose combination and calcium carbonate groups.   Results   The combination could significantly increase the BMD and some indexes of biomechanical in the ovariectomized rats.   Conclusion   The combination can increase the BMD and improve bone biomechanics and benefit postmenopausal osteoporosis(PMOP).
Evaluation of multiplex nutritional intervention effects on impaired fasting glucose population
LIU Hao, ZHAI Chengkai, JIANG Ling,
2006, 22(4): 427-428. doi: 10.11847/zgggws2006-22-04-28
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  Objective   To explore the sy thetical effects of multiplex nutritional interv ention on impaired fasting glucose population and to evaluate the preventive function of multiplex nutritional intervention on diabetes.   Methods   In 6 Nanjing city zones, the impaired fasting glucose individuals were screened, and they were separated into multiplex nutritional intervention group(196 individuals)and control group(72 individuals)at random.The former were prov ided with coarse gr ain and health education for half a year, and no any intervention for the latter.   Results   After the exper imentation, fasting blood glucose(FBG), total cholesterol(TC), Triglycer idaemia(TG), weight, body mass index(BMI), waist to hip(WHR)decreased significantily(P < 0.05)in multiplex nutritional group.FBG, TC, weight, BMI increased significantly in control group, and the ratio of the individuals whose fasting blood glucose decreased to normal(< 5.6 mmol/L)in multiplex intervention group was significantly higher than that of the control group(P < 0.05), while the condition was contrary on the ratio of turning from impaired fasting glucose to diatetes in both groups.   Conclusion   IFG is the risk factor of diabetes.With the fuction of decreasing the fasting glucose level in impaired fasting glucose group, the multiplex nutritional intervention has been proved to be an effective method to prevent diabetes.
Amplification of complete genome of dengue 2 virus by long RT-PCR
GONG Shuji, ZHAO Wei, CAO Hong,
2006, 22(4): 429-430. doi: 10.11847/zgggws2006-22-04-29
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  Objective   To establish the long reverse transcription PCR for amplification of the complete genome of dengue 2 virus.   Methods   The primers were designed according to the published nucleotide sequence of DEN2NGC strain.Sp6 was added to 5.terminal and restriction endonuclease site for Cla ⅳ was added to 3' terminal.After virus RNA was extracted from the brains of the infected new-born mice, the co mplete genome of DEN2NGC strains was amplified by the long RT-PCR.Three fragments of specific lengths were re-amplified from PCR products for identification.   Results   The 11kb full-length genome of dengue 2 virus was amplified successfully by the long RT-PCR.   Conclusion   The complete genome of dengue 2 virus was successful to be amplified using the long RT-PCR, and it will be advantageous for further constructing infectious clone.
Study on burden caused by three diseases and injuries in citizens of Nanning city
RUAN Chong, LIU Yong, YANG Li
2006, 22(4): 431-432. doi: 10.11847/zgggws2006-22-04-30
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  Objective   To investigate the burden about three kinds of chronic diseases(malignant neoplasm; cardiov ascular diseases; cerebrovascular diseases)and injury, and to evaluate the impact on residents health in Nanning city, and to provide a scientific foundation for the establishment of the citizens.chronic diseases and injury prevention.   Methods   Burden of diseases of malignant neoplasm, cardiovascular diseases, cerebrovascular diseases and injury were assessed by disability adjusted life year(DALY)based on data from 1997 to 2001.   Results   From 1997 to 2001, the DALYs loss caused by three kinds of chronic diseases and injury were as following: 16.19DALYs/per thousand people, 17.21DALYs/per thousand people, 19.52DALYs/per thousand people, 20.54DALYs/per thousand people and 20.83DALYs/per thousand people; respectively.Most of disease burden were borne by the people over 40 years old.The injury occurred mainly on people aging from 20 to 40 with male residents more than that of female residents.   Conclusion   Three kinds of chronic diseases and injury broughtheavy burden to Nanning citizens, showing a rising trend.The preventive and controlled measures to malignant neoplasm, cardiovascular diseases, cerebrovascular diseases and injury should be strengthened.
2006, 22(4): 432-432. doi: 10.11847/zgggws2006-22-04-31
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Analysis of drug-resistance and examination on Acinotobacter producing extended-specturm β-lactamaes
LONG Jun, NI Yanli, FAN Huizhen
2006, 22(4): 433-434. doi: 10.11847/zgggws2006-22-04-32
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  Objective   To analyze occurrence of extended-spectr um B-lactamases(ESBLs)of Acinetobacter isolated from patients with lower respiratory tract infection, and to detect the drug sensitivity to 10 kinds of antibacterial drugs.Finally a suggestion was given to treat lower respiratory tract infection due to A cinetobacter infection.   Methods   156 strains isolated from clinical lower respiratory tract infections specimens were isolated and ESBLs were identified by the VIT EK ESBLs detection test and double-disk synergistic tests and standard disk diffusion test.The effects of 10 kinds of antibacterial drugs to strains were compared.   Results   Occurance rate of ESBLs was 20.5%, and pr oductive rate of ESBLs in A.baumanii A.lw of fi, Haemolytius and A.calcoaceticus was 56.2%, 25.0%, 12.5% and 6.3% respectiv ely.   Conclusion   Acinetobacter strains isolated form lower respiratory tract infection showed distince antibacterial resistance.Acinetobacter strains producing ESBLs could not be neglected.
2006, 22(4): 434-434. doi: 10.11847/zgggws2006-22-04-33
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Relationship between ALDH2 genetic polymorphisms and environmental exposure and susceptibility to gastric cancer
YANG Yufeng, SHEN Xiaobing, ZHANG Jiao
2006, 22(4): 435-436. doi: 10.11847/zgggws2006-22-04-34
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  Objective   To evaluate the association between(ALDH2)genetic polymorphisms and some risk factors and susceptibility to gastric cancer in Nanjing population.   Methods   PCR-Amplified product length polymorphism(PCR-APLP) technique were used to analyze the genetic polymorphisms of ALDH-among 169 cases of gastric cancer and a control group of cancer-free and matched by age(±5 years)and sex.Each subject was asked to answer a questionnaire about epidemiology of gastric cancer and was phlebotomized to test association between the interaction of ALDH-genetic polymorphisms and some risk factors and susceptibility to gastric cancer.   Results   There was significant difference of the frequency of ALDH-genotypes between case group and control group(χ 2=4.617, P=0.032).Cigarette smoking, bloat food, having meals indefintely, engorgement was significantily associated with gastric cancer susceptibility.   Conclusion   The genetic polymorphisms of ALDH-might contribute to gastric cancer susceptibility and interact with environmental exposure.
Analysis on dynamic changes of urine N-aceyl-β-D-aminoglycoside enzyme activities in patients with chronic phosphorus poisoning
OU Yanfang, LI Pu, XIA Shuili,
2006, 22(4): 437-438. doi: 10.11847/zgggws2006-22-04-35
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  Objective   To investigate the dynamic changes of urine N-aceyl-B-D-aminoglycoside enzyme(NAG)activityes in patients with chronic phosphorus poisoning and to understand the value of the changes.   Methods   Urine NAG activities were detected by nitrox ylphenol in both patient group and control group and data were analyzed between two groups.   Results   No significant difference on urine NAG activities(P > 0.05)was found between patient group and control group in the first year after phosphorus poisoning, while in the second to fifth year respectively, the urine NAG activities were all significantly higher in the patient group than those in the control group(P < 0.01).   Conclusion   Urine NAG activity plays an important role in judging the kidney damage of patients with chronic phosphorus poisoning and is a sensitive factor in diagnositics of chronic phosphorus poisoning.
2006, 22(4): 438-438. doi: 10.11847/zgggws2006-22-04-36
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Analysis on risk factors in hypertensive pedigrees
ZHANG Jiantao, ZHANG Yexiang, JIANG Weiping,
2006, 22(4): 439-440. doi: 10.11847/zgggws2006-22-04-37
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  Objective   To study the risk factors in hypertensive pedigree.   Methods   To compare the difference of the risk factors between the hypertensive patients and normal persons in 104 hypertension predigrees in Changzhou, Jiangsu province from 2003 to 2004.   Results   The levels of glucose, total cholesterol, triglyceride, body mass index(BMI)and waistline was higher in hypertensive patients than in normal persons.The incidence of metabolic syndrome was higher in hypertensive patients than in normal persons.Logistic regression analysis showed that smoking, alcohol drinking were risk factors and education was productive factor in the incidence of hyper tention in hypertensive pedigree.   Conclusion   It is important for hypertensive familiar pedigree to keep away smoking and alcohol, control body weights and reduce the lipidemia.
Detection of antibodies against SARS-associated coronavirus in patients with clinical fever
CHU Xiaogang, GONG Zuojiong, HUANG Shulan,
2006, 22(4): 441-442. doi: 10.11847/zgggws2006-22-04-38
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  Objective   To determine whether there exist the inapparent infection or subclinical infection of severe acute respiratory syndrome associated coronavirus(SARS-CoV)among the patients with clinical fever.   Methods   373 patients with clinical fever were selected during epidemic outbreak per iod of SARS from May to July 2003 in Hubei province.All the patients were received detection of specific SARS-CoVRNA and specific antibodies(IgG, IgM and anti-N protein antibody)by RT-PCR and ELISA respectively.   Results   Specific antibodies against SARS-CoV(IgG, IgM and anti-Nprotein antibody) were positive in 24 patients.The total positive rate was 6.43% (24/373)and positive rate of IgG, IgMo ranti-N protein antibody was 0.54%, 1.34% and 5.09% respectively.However, the specific SARS-CoVRNA detected by RT-PCR assay was negative in the all patients.   Conclusion   The inapparent infection or subclinical infection of SARS-CoV may be existed in patients with fever.The patients may have immunity and resistance against SARS-CoV, because the protective ant ibodies directed against SARS-CoV are produced in the patients.
2006, 22(4): 442-442. doi: 10.11847/zgggws2006-22-04-39
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Investigation on region distribution of poisonous nassarius Sp in Ningbo city
XU Jingye, CHEN Hengping, YAN Peng,
2006, 22(4): 443-444. doi: 10.11847/zgggws2006-22-04-40
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  Objective   To investigate the region distribution of poiso nous Nassarious sp and study the difference in the paralytic shellfish poisoning(PSP)toxins in various habitats for the control of poisoning caused by poisonous Nassar ious sp.   Methods     Results   were achieved annually with the Association of Official Analytical Chemists(AOAC)and CIQ mouse bioassay in which the toxin intensity was determined according to the standard for shellfish paralytic toxins from FDA in USA.   Results   Among the 127 samples measured in 18 years, the highest concentration of PSP toxins, 1.900 MU in 100 g of tissue, was found in 1991 and the lowestin 1988 with a concentration of 403 MU in 100 g of tissue.Toxin concentration varied in a certain range in other years.The per centage of poisonous Nassarious sp detected was 31.43%, 39.29%, 73.08% and 25.00% in Zhenghai zone, Beilun zone, Ninghai county and Fenghua city, respectively, which was significantly different(P < 0.01).While no significant difference existed among the investigated 3 regions excluding Ninghai county(P > 0.05).The average concentration of PSP toxins from Nassarious sp in Xiangshan county, a new habitat, was below 400 MU/100 g tissue and no poisonous Nassarious sp was found there.   Conclusion   High concentration of PSP toxins was detected in Nassarious sp tissue in Ningbo city, which was a major cause of food poisoning.Difference in toxicology existed among Nassarious sp in various habitats while poisonous Nassarious sp was most commonly found in Ninghai county.There was relationship between the distribution and toxic intensity of poisonous Nassarious sp and its habitats.The toxic intensity fluctuated without regularity.
Construction and transformation of yeast bait plasmids carrying synapse growth factor Neuritin cDNA fragment
LUO Xing, ZHANG Yuhan, YU Na,
2006, 22(4): 444-445. doi: 10.11847/zgggws2006-22-04-41
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  Objective   To construct and transform yeast bait plasmid carrying the synapse growth factor neurit in cDNA fragment.   Methods   Fragment of ORF of full neuritin cDNA was amplified using PCR and directly ligated to the pLex Avector.Insert-contained plasmid was confir med by restriction analysis and DNAsequencing and then transformed into EGY 48 [p8op-LacZ]yeast strain.   Results   Recombinant pLexA-neuritin plasmid was successfully constrcted.Two sort of yeasts respectively transformed recombinant plasmids and empty pLex A vector could grow white colonies on SD/Gal/Raf/-His/-Ura plates(while the yeasts transformed pLexA-pos, positive control plasmid were blue colonies)and none could survive on SD/His/-Leu/-Ura plates.After being cultured in SD/-His/-Ura liquid medium for 16 h, the A6 00 of them were both 0.9 respectively.This indicated that the fusion proteins expressed by recombinant plasmids did not activate the expression of yeast reporter genes LEU 2 and lacZ, and had no toxicity to yeast strain.   Conclusion   The bait plasmids constructed can be used to study the funct ion of neuritin in Yeast Two-Hybrid Screen.
Division of temperature ranges divided by survival length and mortality of Citellophilus tesquorum sungaris
WANG Zhigang, CHI Yangling, LI Ruiying
2006, 22(4): 446-447. doi: 10.11847/zgggws2006-22-04-42
Abstract(1065) HTML (236) PDF 200KB(30)
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  Objective   To study the effects of temperature on the flea(Citellophilus tesquorum sungaris)under the condition free of host.   Methods   Different survival length was observed when the fleas were in different temperature.TD50 of the flea was tested, and different temperature range was divided based on the survival length and the mortality of the fleas.   Results   The TD50 for the female fleas was 40.81℃, and for the male fleas was 41.03℃; lethal high temper ature was above 42℃; sublethal high temperature rnage was between 37.5℃ and 42℃; the suitable temperature range was between 2℃ and 35℃, w hile 15℃ to 27.5℃ was the optimum temperature range; sublethal low temperature range was between-2℃ and 10℃; lethal low temperature range was below -10℃.   Conclusion   Temperature is the biggest climate factor for the effect on the citellophilus tesquorum sungaris, its temperature range of survival has no obviously differences with other insects under the condition free of host.
2006, 22(4): 447-448. doi: 10.11847/zgggws2006-22-04-43
Abstract(745) HTML (225) PDF 334KB(34)
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Evaluation of contaminative status and safety of prevalent pathogenic organisms in edible raw aquatic products
DAI Changfang, FANG Yueyi, YAN Jiwen,
2006, 22(4): 449-450. doi: 10.11847/zgggws2006-22-04-44
Abstract(1195) HTML (183) PDF 209KB(187)
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  Objective   To know the contaminative status of prevalent pathogenic organisms in edible raw aquatics and their breeding environmentin pearl river delta region of Guang dong.   Methods   325 samples were collected during two and half years and detected pathogenic organisms by the national hygienic standards and typical methods.Measures for controlling food safety were studied by sanitation standard operating procedure, disinfection measure, ultra-pressure ster ilization, radiation sterilization, etc.   Results   79 prevalent pathogenic microorganisms were detected, including 7 biologial species.The accumulative positive rate was 24.31% in all samples and 50% in Luoshi shrimp; There were clonorchis endemicusin 5 samples among 25 raw fishes.The incidence of pathogenic microor ganisms was 14.46% for firs-tclass restaurants and 34.59% for other restaurants.Ultra-pressure and radiation technique could help to sterilize those pathogenic or ganisms in edible raw aquatics.   Conclusion   Edible raw aquatics were contaminated by prevalent pathogenic organisms in pearl river delta region of Guangdong.It was necessary to strengthen the management of food hygienic and promulgate safe practices foredible raw aquatics.
Effect of dibutyltin dilaurate on hepatic toxicity in rats
LI Xuejun, ZHU Jian, LI Na,
2006, 22(4): 451-452. doi: 10.11847/zgggws2006-22-04-45
Abstract(1212) HTML (281) PDF 309KB(41)
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  Objective   To study the effects of dibutyltin dilaurate(DBTD)on hepatic system and the activity of enzyme in serum of rats.   Methods   28 health rats were chosen to do the experiment, and 7 animals in each group.The rats were administrated orally with DBTD at the dose of 0, 5, 10 and 20 mg/kg respectively, and killed 5 weeks later.Alkaline phosphatases (AKP), glutamic-pyruvic transaminase enzyme(GPT)and gamma glutamy ltransferase(GGT)in serum, and acid phosphatases (ACP), alkaline phosphatases(AKP), lactate dehydrogenase enzyme(LDH), tin content in hepatic tissue were measured.   Results   The DBTD content of hepatic tissue was higher than that in control group(P < 0.05), and the activities of ACP, AKP and LDH in hepatic tissue were higher than those in control group(P < 0.05), at the same time the activities of ALP, GGT and GPT were also obviously higher than those in control group(P < 0.01).   Conclusion   DBTD can accumulate in hepatic tissue and has hepatic toxicity, so it can affect the activity of enzymes in liver and the liver's normal function.
2006, 22(4): 452-452. doi: 10.11847/zgggws2006-22-04-46
Abstract(813) HTML (234) PDF 122KB(31)
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Antiradiation effect of wild lactarius volemus on mice
LIU Jia, GAO Min, XIANG Hong,
2006, 22(4): 453-454. doi: 10.11847/zgggws2006-22-04-47
Abstract(1226) HTML (293) PDF 206KB(45)
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  Objective   To observe the antiradiation effect of wild lactarius volemus on ince in Guizhou province.   Methods   Mice were randomly divided into 5 groups: 3 test groups administered with lactarius volemus[2.3, 4.5, 9.0 g/(kg·bw)respectively], negative control group, and positive control group.Mice were dealt with 5 Gy irradiation in test and positive groups.The numbers of peripheral blood leukocytes, the contents of bone marrow DNA, and the poly chromatic erythrocytic (PE)micronucleus formation rate of bone marrow were detected.   Results   The numbers of peripheral blood leukocytes in test groups were sig nificantly more than that in positive control group on day 5 after irradiation(P > 0.01);there were negative correlation between the dose of lactarius volemus and the level of DNA damage and had dose-effect relationship on days 4, 15 after irradiation(P < 0.05).Micronucleus rate in the high dose group[9.0 g/(kg·bw)]were significantly lower than that in the positive control on days 4 after irradiation(P < 0.01).   Conclusion   The wild lactarius volemus protects the mice from the damage of leukocytes and DNAinduced by irradiation.In the 9.0 g/(kg·bw)group, wild lactarius volemus is of a better protection against the damage of chro mosome induced by irradiation.
2006, 22(4): 454-454. doi: 10.11847/zgggws2006-22-04-48
Abstract(828) HTML (241) PDF 130KB(22)
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Effects of potassium ion efflux on mouse sperm in vitro capacitaion in mice
GONG Wei, CHENG Jie, ZHANG Xichun,
2006, 22(4): 455-456. doi: 10.11847/zgggws2006-22-04-49
Abstract(1120) HTML (321) PDF 215KB(37)
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  Objective   To observe the correlation between the mouse sperm capacitaion state and K+ channel and its mechanism.   Methods   Mice sperm in vitro capacitation was assessed by the B pattern of staining by chlortetracycline (CTC).Then the delayed rectifier K+ currents(ⅠDRK)in mouse pachy tene spermatocyte were recorded using whole-cell patch clamp technique.   Results   When spermatozo a were cultured in valinomycin(Val, a potassium ionophore)at the concentration of 50 nmol/L, the capacitation was increased significantly(n=10, P < 0.05).50 nmol/L Val increased the amplitude of IDRK currents significantly, up-regulated the-Ⅳ curve of IDRK current.   Conclusion   Valinomcin promotes potassiumion efflux by activation of delayed rectifier potassium channels in mouse pachytene spermatocyte, and then mediated hyperpolarization itself appears capable of inducing sperm capacitation.
DNA damage and changes of antioxidative enzymes in acetate lead poisoned mice
LIANG Jiancheng, WANG Chunhong, ZHANG Yan,
2006, 22(4): 457-458. doi: 10.11847/zgggws2006-22-04-50
Abstract(1176) HTML (313) PDF 348KB(54)
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  Objective   To study the damage effect of lead acetate on DNA and its mechanism and the changes of antioxidative enzymes in vivo.   Methods   DNA break in liver cell of mice exposed to lead acetate by inhalation at different concentrations for 6 weeks were analyzed with single cell gel electrophoresis(SCGE).Meanwhile, chromatosome damage of bone marrow cell were analyzed with micronucleus test, the activity of superoxide dismutase(SOD), glutathione-Px(GSH-Px)in blood and the level of Hb in blood, glutathione(GSH)in liver were detected.   Results   At the concentration of 0.1%, 0.2%, 0.4%, lead acetate could induce DNA damage of liver cells and chromatosome damage of bone marrow cell.Both results showed the obvious dose-response relationship between the level of the genetic materials damage and the doses of lead acetate.Both the activity of SOD, GSH-Px in blood and the level of Hb in blood, GSH in liver were decreased in lead acetate poisoned mice.   Conclusion   Lead acetate poisoning may result in not only DNA damage in liver cells and chromatosome damage in bone marrow cell, but also decrease in activity of antioxidative enzymes.
Establishment of rat model of DDP-induced renal anemia
GAO Liping, MA Runyu, ZHOU Junbo
2006, 22(4): 459-460. doi: 10.11847/zgggws2006-22-04-51
Abstract(972) HTML (224) PDF 362KB(47)
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  Objective   To establish the rat model of cis-diamine-dichloro-platinum(DDP)-induced renal anemia.   Methods   The rats were intravenously injected with DDP(8mg/kg), and serum EPO levels were measured by 3H-TDR incorporation in fetal mouse hepato cytes.Moreover, the changes of renal tissue were studied by light microscope and electron microscope.   Results   The number of red blood cell, hemoglobin concentration, reticulocytes and serumer ythropoietin(EPO) were greatly decreased, serum urea nitrogen elevated significantly, pathological findings revealed that DDP might significantly cause renal damage in rats.   Conclusion   Rat model of renal anemia could be induced by DDP.
2006, 22(4): 461-462. doi: 10.11847/zgggws2006-22-04-52
Abstract(656) HTML (215) PDF 278KB(19)
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2006, 22(4): 462-462. doi: 10.11847/zgggws2006-22-04-53
Abstract(717) HTML (207) PDF 140KB(27)
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Study on anti-oxidation effects of hawthorn leaves
YU Qiuhong, HUANG Peili, ZHANG Shuhua,
2006, 22(4): 463-464. doi: 10.11847/zgggws2006-22-04-54
Abstract(1041) HTML (210) PDF 127KB(59)
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  Objective   To study the effects that leaf of hawthorn restrain low-density lipopr otein C(LDL-C)oxidization.   Methods   This paper has chosen wister male rates as the object.While the rats were fed with high-fed stuff everyday, they were also fed with hawkthorn leaves, in high, medium and low doses respectively.After four weeks.obser vation, the levels of superox ide dismutase(SOD), glutathione-Px(GSH-Px)mid Vitamin E, malonyl dialdehyde(MDA)and fluoresceuce in LDLC were studied.   Results   The levels of SOD in each groups showed no significantly difference(P > 0.05), The levels of GSHPx in each leaf of hawthorn groups increased than that in high fat control group(P < 0.05).Vitamin E in high, medium and low doses groups showed significantly higher than that in high fat control group(P < 0.05).The levels of fluorescence in high doses groups, medium doses groups decreased compared with the level of high fat control group(P < 0.05).There were no significantly difference in each leaf of hawthorn groups and high fat control group(P > 0.05).   Conclusion   Leaf of hawthorn has the capacity of decreasing the content of fluorescence; decreasing the consume of Vitamin E in LDL-C; restraining LDL-C oxidization increase; and it has the capacity of anti-oxidation effects.
2006, 22(4): 465-466. doi: 10.11847/zgggws2006-22-04-55
Abstract(853) HTML (238) PDF 197KB(36)
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2006, 22(4): 466-466. doi: 10.11847/zgggws2006-22-04-56
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2006, 22(4): 467-468. doi: 10.11847/zgggws2006-22-04-57
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2006, 22(4): 468-468. doi: 10.11847/zgggws2006-22-04-58
Abstract(720) HTML (288) PDF 134KB(31)
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2006, 22(4): 469-470. doi: 10.11847/zgggws2006-22-04-59
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2006, 22(4): 470-470. doi: 10.11847/zgggws2006-22-04-60
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2006, 22(4): 471-472. doi: 10.11847/zgggws2006-22-04-61
Abstract(723) HTML (185) PDF 358KB(24)
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2006, 22(4): 472-472. doi: 10.11847/zgggws2006-22-04-62
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2006, 22(4): 473-473. doi: 10.11847/zgggws2006-22-04-63
Abstract(899) HTML (228) PDF 136KB(31)
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Investigation on high school personnel smoking status quo in four cities of China
YANG Yan, NAN Yi, WEI Xiaoshuai,
2006, 22(4): 474-475. doi: 10.11847/zgggws2006-22-04-64
Abstract(992) HTML (214) PDF 210KB(62)
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  Objective   To study smoking prevalence of school personnel for providing scientific references for teacher tobacco control.   Methods   A cross-sectional study was conducted among high school leaders, thachers and workers of Puyang city, Shanghai city, Tianjin city and Zhuhai city.Atotal of 100 high schools were selected by random sampling from all the city and township high schools in the four cities(each city selected 25).Astandardized selfadministrated questionnaire was used to obtain informationon smoking.   Results   General smoking rate of the surveyed groups were 45.4% for males and 1.0% for females in Puyang, 54.1% and 3.4% in Shang hai, 44.9% and 2.8% in Tianjin, 47.6% and 3.1% in Zhuhai.The smoking rate of males was higher than that of females, which was statistically significant(P < 0.001).The smoking rates varied with different age cohorts. < 24 and 25~29 age cohorts had lower rates than those of 60 years and over, which was statistically significant(P < 0.01).The smoking rates also varied with positions of the surveyed.School leaders had higher smoking rates than those of school workers, which was statistically significant(P < 0.05).Abstinence rates among different age cohorts also varied.50~59 age cohort and 60 years and above had higher rates than those of < 24 age cohort, which was statistically significant(P < 0.05).   Conclusion   The smoking rates among school personnel of the four cities were all lower than those of the general population, and the abstinence rates were higher.As a group with higher education, teachers had preferable knowledge level and qualities compared with the general population.As a result, they had better perception of selfdiscipline.
Analysis on organic pollutants of tap water in Kunming city
GU Tao, YANG Yemei, ZHU Fengming,
2006, 22(4): 476-477. doi: 10.11847/zgggws2006-22-04-65
Abstract(1175) HTML (233) PDF 346KB(72)
Abstract:
  Objective   To study the main organic pollutants in tap water and their genotoxicity in Kunming city.   Methods   One hundred and fifty liters tap water sample were collected from three water works(A, B, C)and a control group(D).The organic pollutants in tap water were extracted by XAD-2 resin, then washed by methanol and acetone.The organic extractions were detected by using Gas Chromatography/Mass Spectrometry(GC/MS); Mouse micronucleus test(MT)was used to detect the genotoxicity effect of organic pollutants in vivo.   Results   Total 335 organic pollutants were monitored under a certain condition in the above-mentioned water samples, including up to ten kinds of Environmental Protection Agency (EPA)priory pollutants and up to 20 kinds of mutagens and carcinogens.The micronucleus test results demonstrated that organic extraction from waterworks A could induce increasing micronucleus frequency and did not show dose response relationship.Organic extraction from waterworks B and C could notinduce increasing micronucleus frequency and did not show dose response relationship.The micronucleus test results of control sample were negative, too.   Conclusion   The combination of GC/MS and micronucleus testis a rapid and effective method for evaluating organic pollutants in tap water.
Investigation on cigarette smoking in rural area population over 40 years of Guangming town of Shanghai city
HUANG Jiuyi, CAO Yifeng, GUO Jiping,
2006, 22(4): 478-479. doi: 10.11847/zgggws2006-22-04-66
Abstract(939) HTML (202) PDF 209KB(29)
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  Objective   To investigate and analyze status of cigarette smoking in Guangming Town over 40 years population of Shanghai city.   Methods   Acros-ssectional study was careied out in a cluster sampling population over 40 years.Questionnaires were designed for nose to nose investigatin, which included general information and related situations of cigarette smoking.Ex posure rate of cigzarette smoking, passive smoking were estimated and its distributional characteristics of age and gender were described.   Results   Exposure rates of cigarette smoking was 86.7% in male and 0.2% in female(average 36.4%, P < 0.01).In smoking male population, numbers of cigarettes consumed per day of one person was 17.79±8.53.The passive smoking exposure rate in male and female were 84.2% and 58.4%, respectively.91.2% male passive smokers exposed themselves to working place or public.However, 90.0% female passive smoker exposed themselves to family.   Conclusion   Among rural area over 40 years population in Shanghai city, smoking exposure rate in male and passive smoking rate both in male and female are in a considerable level.
2006, 22(4): 479-479. doi: 10.11847/zgggws2006-22-04-67
Abstract(716) HTML (241) PDF 133KB(19)
Abstract:
Study on ecological epidemiology of Hantavirus reservoirs in Beijing city
TANG Fang, LI Senlin, WANG Aiguo,
2006, 22(4): 480-481. doi: 10.11847/zgggws2006-22-04-68
Abstract(1035) HTML (263) PDF 216KB(28)
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  Objective   To identify the condition of Hantavirus infection and genetype as well as to determine the risk factors of hantavirus infection in rodents captured in Beijing and the relationship between them.   Methods   The captured mice were classfied and the density of distribution was calculated.RT-PCR technique was used to amplify the partial M fragnments of Hantavir use.Several representative positive samples were sequenced and analysed by Clustal X(5.0)and DNAClub software.   Results   A total of 295 animals were captured, among which Battus norvegicus was the dominant group.The median infection rates with hantav irus were 14.58% in Battus norvegicus and 2.33% in Mus musculus Linnaeus.Nucleotide sequences analysis showed that the virus detected all belong ed to SEO-type.The infection rates in the population which weighs more or has some scars in the body were higher.No significant difference of HV prevalence was recorded between male and female.   Conclusion   The SEO-HV infection of rodents was widely distributed in Beijing and the nature focus of HT-HTV was not found.The major host of Hantavir use in Beijing was Rattus norvegicus.There was some correlations between the HV prevalence and the sub-population of rodents on sample sites.
2006, 22(4): 482-483. doi: 10.11847/zgggws2006-22-04-69
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2006, 22(4): 483-483. doi: 10.11847/zgggws2006-22-04-70
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2006, 22(4): 484-484. doi: 10.11847/zgggws2006-22-04-71
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2006, 22(4): 485-486. doi: 10.11847/zgggws2006-22-04-72
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2006, 22(4): 486-486. doi: 10.11847/zgggws2006-22-04-73
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2006, 22(4): 487-487. doi: 10.11847/zgggws2006-22-04-74
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2006, 22(4): 488-488. doi: 10.11847/zgggws2006-22-04-75
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2006, 22(4): 489-489. doi: 10.11847/zgggws2006-22-04-76
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2006, 22(4): 490-491. doi: 10.11847/zgggws2006-22-04-77
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2006, 22(4): 492-493. doi: 10.11847/zgggws2006-22-04-78
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2006, 22(4): 494-496. doi: 10.11847/zgggws2006-22-04-79
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2006, 22(4): 496-496. doi: 10.11847/zgggws2006-22-04-80
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2006, 22(4): 497-498. doi: 10.11847/zgggws2006-22-04-81
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2006, 22(4): 499-500. doi: 10.11847/zgggws2006-22-04-82
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2006, 22(4): 500-500. doi: 10.11847/zgggws2006-22-04-83
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2006, 22(4): 501-501. doi: 10.11847/zgggws2006-22-04-84
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2006, 22(4): 502-502. doi: 10.11847/zgggws2006-22-04-85
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2006, 22(4): 503-504. doi: 10.11847/zgggws2006-22-04-86
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2006, 22(4): 504-504. doi: 10.11847/zgggws2006-22-04-87
Abstract(861) HTML (238) PDF 125KB(22)
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Assessment of informed choice of contraceptives interference effect in rural women
REN Ning, XIONG Chengliang, GUANG Huangtao,
2006, 22(4): 505-507. doi: 10.11847/zgggws2006-22-04-88
Abstract(940) HTML (259) PDF 459KB(44)
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  Objective   To compare the rural women's knowledge of the informed choice of contracptives before and after intervention.   Methods   To take intervene measurements of instructing using various kinds of methods such as television, broadcast, consultation and so on.The rural women were surveyed twice with familiar questionnaires.Then the two rate of awareness were compared.   Results   After excluding the confounding by deference of age and education level, it was still indicated that awareness, attiude and ability at final survey was significantly higher than that of the original.   Conclusion   The intervention measurements obviously improve the knowledge, attitude and ability to informed choice.
2006, 22(4): 507-507. doi: 10.11847/zgggws2006-22-04-89
Abstract(868) HTML (245) PDF 119KB(37)
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Gender difference of sexual and reproductive helth knowledge among male and female unmarried migrants in Shanghai city
GAO Ersheng, ZUO Xiayun, SHEN Yan,
2006, 22(4): 508-509. doi: 10.11847/zgggws2006-22-04-90
Abstract(1117) HTML (242) PDF 196KB(63)
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  Objective   To understand the sexual and reproduct ive health(RH)knowledge statues of male and female unmarried migrants aged 15~24 and its influencing factors.   Methods   1 092 unmarried migrants aged 15~24 were investigated with anonymous self administered questionnaire in Changning District, Shanghai,   Results   The knowledge scores of male and female unmarried young migrants were rather low with the median score being of 53.2 and 30.5, respectively.Malesad more knowledge, with the median score higher than that of females by over 20.Whether they were males or females, the knowledge of sex ual physiology and contraceptives was lower than that of sexually transmitted disease(STD)and HIV/AIDS.Knowedge scores of both males and females were positively influenced by education level, going out to work alone, having received sexual educationg at school and having communicated sexual knowledge with others.When looking at gender disparity, for males, age and having watched prnographic videos were also positively associated with knowlege.In contrast, for females, former residence(urban/rural), income per month, living with lovers, having communicated sexual knowledge with parents and media wree positively associated with know ledge.   Conclusion   The differences of sexual knowledge and related factors between males and females should be considered when sexual and RH education and services are provided to unmarr ied young migrants.
2006, 22(4): 510-511. doi: 10.11847/zgggws2006-22-04-91
Abstract(732) HTML (247) PDF 190KB(39)
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Detection and assessment of volatile organic compounds in interior wall coating in Lanzhou city
LI Xiaohong, LIU Xingrong, LI Wangwei
2006, 22(4): 511-512. doi: 10.11847/zgggws2006-22-04-92
Abstract(1167) HTML (300) PDF 346KB(76)
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  Objective   To study the status of volatile organic compounds(VOCs)in two kinds, 25 brands of interior wall coating.   Methods   VOCs, density and the water in two kinds of interior wall coating were tested by GB6 751-86, GB76 750-86 and azeotropic distillation, respectively.   Results   With regard to the quantities of VOCs, 42% of the water soluble coating(5 out of 12 samples)and 23% of the emulsion(3 out of 13 samples)were above 200 g/L evaluated by GB18 582-2001.No statistical significance between the two kinds of interior wall coating was found(t=1.657, P > 0.05).   Conclusion   The quality of the two kinds of interior wall coating was much concerned, therefore, the government should pay more attentions to quality and health safety of interior wall coating.