3.Changes and significance of autophagy in rat lung injury induced by gas explosion.
R Y HOU ; J N WANG ; Q ZHOU ; Y GUAN ; H B LI ; X W DONG ; J LI ; W D WU ; W J REN ; S Q YAO
Chinese Journal of Industrial Hygiene and Occupational Diseases 2021;39(8):568-573
Acute Lung Injury
;
Animals
;
Autophagy
;
Explosions
;
Lung
;
Rats
;
Rats, Sprague-Dawley
4.Molecular transmission clusters on HCV genotypes among newly reported HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture of Yunnan province, 2016.
Y K WANG ; X C CHEN ; J B WANG ; X DUAN ; S J ZHOU ; J YANG ; T YANG ; R H YE ; Y C YANG ; S T YAO ; S DUAN ; N HE
Chinese Journal of Epidemiology 2019;40(2):191-195
Objective: To understand the characteristics on major strain subtypes of hepatitis C virus among HIV/HCV co-infected patients, so as to explore the molecular transmission clusters and related risk factors of HCV strains. Methods: A total of 336 newly reported HIV-infected patients were diagnosed as HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture (Dehong) in 2016. We used Nested PCR to amplify CE1 and NS5B genes among 318 samples with plasma levels above 200 μl, before using the combining phylogenetic tree and constructing molecular propagation network method to analyze the related data. Results: A total of 267 HIV/HCV co-infection patients who had met the HCV genotyping requirements were screened the gene subtypes were diversified. Among these genotypes, proportions of 3b, 6n, 6u, 1a, 3a and other subtypes appeared as 32.6% (87/267), 18.4% (49/267), 15.7%(42/267), 13.1%(35/267), 11.2%(30/267) and 9.0%(24/267) respectively. Molecular transmission network of five major HCV genotypes was constructed with a clustering rate of 39.1% (95/243). The clustering rate of subtype 1a was the highest, as 71.4% (25/35). Results from the multivariate logistic regression showed that ethnic minorities other than the Yi and Jingpo (vs. the Han, OR=0.17, 95%CI: 0.04-0.71), the married spouses (vs. the unmarried, OR=0.42, 95%CI: 0.18-0.94), the 6n and 3a subtype (vs. the 3b subtype, OR=0.34, 95%CI: 0.12-0.95; OR=0.22, 95%CI: 0.05-0.93) were more difficult to form transmission clusters. However, the 6u and 1a subtype (vs. the 3b subtype, OR=3.10, 95%CI: 1.21-7.94; OR=4.00, 95%CI: 1.32-12.11) seemed more likely to form the transmission clusters. Conclusion: Ethnicity, marital status and genetic subtypes were factors significantly associated with the formation of transmission clusters related to the major HCV gene subtypes among newly reported HIV/HCV co-infection in Dehong.
AIDS-Related Opportunistic Infections/virology*
;
Asian People
;
China/epidemiology*
;
Coinfection
;
Genotype
;
HIV Infections/virology*
;
Hepacivirus/isolation & purification*
;
Hepatitis C/virology*
;
Humans
;
Phylogeny
;
Polymerase Chain Reaction
5.Study on self-rated health and related factors in centenarians in Hainan province.
Y YAO ; M LIU ; S S YANG ; J H WANG ; Q ZHU ; X P CHEN ; C X NING ; J LI ; F ZHANG ; F X LUAN ; Y L ZHAO ; Y HE
Chinese Journal of Epidemiology 2018;39(3):264-267
Objective: To investigate the self-rated health and related factors in centenarians in Hainan province. Methods: A cross-sectional study in centenarians from 18 cities and counties was carried out in Hainan between June 2014 and December 2016. They data about their demographics, chronic diseases, ability of daily life, mental health and sleep quality were collected in a household interview. Self-rated health status was classified into 5 degrees according to the subjective assessment by centenarians. Results: Of 991 centenarians in this study, 157 (15.8%) were in good self-rated health and 228 (23.0%) were in poor self-rated health. Multivariate logistic regression analysis showed that chronic pain, visual impairment, depression, limited ability of daily life and poor sleep quality were the factors associated with poor self-rated health in centenarians in Hainan (P<0.05). Conclusion: The proportion of centenarians in good self-rated health was low in Hainan, the influencing factors included chronic pain, visual impairment, depression, poor sleep quality and limited ability of daily life. It is necessary to conduct targeted intervention in centenarians in Hainan.
Activities of Daily Living
;
Aged, 80 and over
;
China
;
Chronic Disease/epidemiology*
;
Cross-Sectional Studies
;
Depression/epidemiology*
;
Depressive Disorder/epidemiology*
;
Female
;
Geriatric Assessment
;
Health Status
;
Health Status Indicators
;
Humans
;
Male
;
Mental Health
;
Risk Factors
;
Sleep/physiology*
;
Sleep Wake Disorders/epidemiology*
6.Evaluation of activities of daily living and related factors in community elderly people in urban and rural areas of Beijing.
M LIU ; J H WANG ; S S YANG ; Y YAO ; S S WANG ; Y HE
Chinese Journal of Epidemiology 2018;39(3):268-272
Objective: To evaluate the activities of daily living (ADL) and related factors in community elderly people in urban and rural areas of Beijing. Methods: A population-based cross-sectional study was conducted in Haidian and Miyun districts of Beijing using two-stage random cluster sampling method between 2011 and 2014. Results: A total of 4 499 community elderly people (1 815 males, 2 684 females) aged 60-95 years were included in the study. The mean age was (70.3±6.7) years. Compared with the participants from urban area, the participants from rural area had lower education level (85.2% had education level primary school), but higher level of smoking (22.8%) and drinking (43.1%). The ADL disability rate was higher in rural area than in urban area (12.4% vs. 11.8%, P=0.039). And it increased significantly with age (P<0.05). Multivariate logistic regression showed besides urban-rural difference (P=0.031), age (P=0.013), education level (P=0.015), physical activity (P=0.001) and stroke (P<0.001) were related factors influencing ADL disability. Conclusions: The ADL disability was relatively low in the community elderly people in Beijing, and there was significant difference between rural area and urban area. Older age, lower education level and physical inactivity and stroke were related factors.
Activities of Daily Living
;
Aged
;
Aged, 80 and over
;
Alcohol Drinking/epidemiology*
;
Beijing
;
Cross-Sectional Studies
;
Exercise
;
Female
;
Humans
;
Male
;
Middle Aged
;
Motor Activity
;
Multivariate Analysis
;
Population Surveillance/methods*
;
Rural Population
;
Smoking/epidemiology*
;
Stroke/epidemiology*
;
Urban Population
7.Investigation of a measles outbreak caused by genotype D8 virus in Pinghu city of Zhejiang province, 2017.
R YAN ; B HE ; F Y YAO ; Z L XIANG ; H Q HE ; S Y XIE ; Y FENG
Chinese Journal of Epidemiology 2018;39(3):333-336
Objective: To investigate the epidemiological characteristics of measles outbreak caused by genotype D8 virus in Pinghu city of Zhejiang province, and provide evidence for the control of the outbreak. Methods: The measles outbreak data were collected through National Measles Surveillance System. The outpatient records and admission records were checked, field investigation and outbreak response were conducted. Blood samples in acute phase and swab specimens were collected from the patients for laboratory testing, including serology test, RNA extraction and amplification, measles virus isolation and genotype identification. Software SPSS 17.0 and Excel 2016 were used for data analysis. Results: A total of 10 confirmed measles cases were reported in Pinghu city, and 8 cases were aged >40 years. Six blood samples were collected, in which 5 were measles D8 virus positive and 1 was negative in measles virus detection. There were epidemiological links among 10 cases which occurred in a factory, a hospital and a family at the same time. There was no statistical difference in symptoms among cases caused by D8 virus and H1a virus. After the emergent measles vaccination, the measles outbreak was effectively controlled. Conclusion: Untimely response due to the uneasy detection of measles cases in the early stage, nosocomial infection and weak barrier of measles immunity in adults might be the main reasons for this outbreak. Measles vaccination is effective in the prevention of measles D8 virus infection. It is necessary to strengthen measles genotype monitoring for the tracing of infection source and control of outbreaks.
Adult
;
Amplified Fragment Length Polymorphism Analysis
;
Child
;
Cross Infection
;
Disease Outbreaks
;
Genotype
;
Hospitalization
;
Humans
;
Measles/virology*
;
Measles virus/isolation & purification*
;
Outpatients
;
Population Surveillance
;
RNA, Viral/genetics*
;
Sequence Analysis, DNA
8.Effect of health literacy and exercise-focused interventions on glycemic control in patients with type 2 diabetes in China.
X N LIU ; Q H XIA ; H FANG ; R LI ; Y Y CHEN ; Y J YAN ; P ZHOU ; B D YAO ; Y JIANG ; W G ROTHMAN ; Wanghong XU
Chinese Journal of Epidemiology 2018;39(3):357-362
Objective: To evaluate the effect of health literacy and exercise-focused interventions on glycemic control in patients with type 2 diabetes (T2DM) in China. Methods: In this cluster randomized controlled trial, a total of 799 T2DM patients with most recent hemoglobin A1c (HbA1c) ≥ 7.5% (or fasting plasma glucose level ≥10 mmol/L) were recruited from 8 communities in Minhang and Changning districts of Shanghai, and randomized into a health literacy intervention group, an exercise intervention group, a comprehensive intervention group and a control group. After baseline survey and examination, a one-year intervention and 3 times (at 3(rd), 6(th), and 12(th) month) follow-up surveys were conducted. Results: The follow-up rates for all the subjects were 99.4%, 98.4% and 95.2%, respectively, at 3(rd), 6(th) and 12(th) month. Patients in intervention groups were more likely to achieve a goal HbA1c level (HbA1c <7.0%) than those in control group, with the highest glycemic control rate (25.3%) observed in comprehensive intervention group at 3(rd) month and then in exercise intervention group (25.3% and 34.6%) respectively, at 6(th) month and 12(th) month. The average levels of HbA1c in three intervention groups were lower at each follow-up time point than those at baseline survey. However, the decreases in HbA1c were obvious only at 6(th) month (P<0.001), with ls-mean (95%CI) of -0.48% (-0.71%, -0.25%), -0.33% (-0.55%, -0.11%) and -0.70% (-0.92%, -0.48%), respectively, in comprehensive, health literacy and exercise intervention groups, but it increased slightly by 0.03% (-0.19%, 0.25%) in control group. Compared with control group, the interventions were significantly associated with the decrease of HbA1c level, with the most improvement observed in comprehensive group (β=-0.47, 95% CI: -0.73, -0.20) at 3(rd) month, and in exercise intervention group at 6(th) month (β=-0.73, 95%CI: -0.98, -0.47) and at 12(th) month (β=-0.75, 95%CI: -1.05, -0.45) of follow-up. Stratified analyses showed that patients with lower health literacy level could benefit from any intervention, while those with higher numeracy skill benefited more from exercise intervention. Conclusion: Both health literacy and exercise-focused interventions may decrease HbA1c level in patients with T2DM, which would be helpful in reducing the risks of complications and deaths in diabetes patients.
Blood Glucose/analysis*
;
China
;
Diabetes Mellitus, Type 2/therapy*
;
Disease Management
;
Exercise
;
Follow-Up Studies
;
Glycated Hemoglobin/analysis*
;
Health Literacy
;
Humans
;
Patient Education as Topic
;
Self Care
;
Surveys and Questionnaires
;
Treatment Outcome
9.Effect of docosahexenoic acid supplementation on infant's growth and body mass index during maternal pregnancy.
P LI ; Y SHANG ; Y J LIU ; X L CHANG ; H Y YAO ; A M LIANG ; K M QI
Chinese Journal of Epidemiology 2018;39(4):449-454
Objective: To investigate the effects of docosahexenoic acid (DHA) supplementation on infant's growth and BMI during pregnancy. Methods: A total of 1 516 healthy pregnant women delivered their babies in two maternal and child health care hospitals in Beijing and were chosen as the subjects in this cohort study from May to October 2015. Self-developed questionnaires were used to gather general information of the subjects, including age, height, weight, weight gain during pregnancy, delivery mode, DHA supplementation etc., before giving birth. Information on body length, weight, head circumference and BMI at birth and 6 months postnatal, of the infants were recorded. Breast milk was collected to test the fatty acid profiles by using the gas chromatography (GC) method at one to three months postnatally. Results: The overall rate of DHA supplementation was 47.76% among the pregnant women, in which introduction of DHA from the early and second stage of the pregnancy accounted for 49.31% and 39.64% respectively. When DHA supplementation began from the early pregnant stage, the DHA concentration showed an increase in the milk (P<0.05), whereas the supplementation began from the second and third stages did not affect the milk DHA concentration (P>0.05). Higher height and lower BMI were seen in the infants at birth and 6 months in the supplementation group when comparing to the non-supplementary group (P<0.05), with the greatest effects noticed in the earliest supplementation group. Specifically, the head circumference appeared larger from the early pregnant stage in the DHA supplementary group, than that in the non-supplement group (P=0.001). The increment of head circumference was larger than that in the other groups when the infants were 6-month old (P<0.01). Results from the partial regression analysis showed that during pregnancy, there were positive correlations between DHA supplementation and height (r=0.324, r=0.216), head circumference (r=0.221, r=0.302) as well as the increment of head circumference (r=0.276) at birth and 6 months (P<0.05). Whereas, a negative correlation was shown between DHA and the infants' BMI (r=-0.310, r=-0.371) (P<0.05) when supplementation was given during maternal pregnancy. Conclusions: When DHA supplementation program was carried out during maternal pregnancy, it could increase the height and head circumference and inhibit the rapid increase of BMI in the infants BMI. Our findings seemed helpful in promoting brain development and preventing the childhood obesity.
Body Height
;
Body Mass Index
;
Body Weight
;
Child Development/drug effects*
;
Cohort Studies
;
Dietary Supplements
;
Docosahexaenoic Acids/pharmacology*
;
Female
;
Humans
;
Infant
;
Infant, Newborn/physiology*
;
Maternal-Fetal Exchange
;
Parturition
;
Pregnancy
;
Pregnancy Outcome
;
Prenatal Care
;
Weight Gain
10.Related factors and interaction on HIV/HCV co-infection of patients access to methadone maintenance treatment.
T YAO ; D FENG ; M H PAN ; Y P CHENG ; C X LI ; J WANG ; Y L FENG ; J SHI ; T SU ; Q CHEN ; S SHI ; S P WANG
Chinese Journal of Epidemiology 2018;39(5):631-635
Objective: To estimate the prevalence of HIV/HCV co-infection and explore the influence factors and their interaction on HIV/HCV co-infection of patient's access to methadone maintenance treatment (MMT). Methods: A face to face interviews were conducted among 750 patients at two MMT clinics in Guangxi Zhuang Autonomous Region. The questionnaires information included demographic characteristics, HIV and HCV infection status, history of drug abuse, urine test for morphine, high risk sex behaviors, needle sharing, dropped out etc. Methods of χ(2) test one-way, multivariate logistic regression and interactions were used to analyze the related factors of HIV/HCV co-infection. Results: The study subjects included 750 participants, 18.31% (127/691) of patients were co-infected with HIV and HCV. The HIV/HCV co-infection rate in patients who shared needles with others or dropped out of treatment was 35.84% (81/226) and 19.88% (64/322) respectively, which were higher than those who have never shared needles or dropped out (9.89%, 46/465 and 17.07%, 63/369). Logistic regression analysis results showed that after adjusted for confounding factors, patients who shared needles (OR=4.50, 95%CI: 2.72-7.43) and dropped out of treatment (OR=1.71, 95%CI: 1.04-2.80) were more likely to be infected with HIV/HCV. Interaction analysis showed that sharing needles and dropping out of treatment exist additive effect on co-infection of HIV and HCV (RERI=4.21, AP=0.44, SI=1.95). Conclusions: Needle sharing and dropping out of treatment are associated with HIV/HCV co-infection. Health education, psychological counseling and other measures should be taken to reduce needle sharing and dropping out of MMT.
China/epidemiology*
;
Coinfection/epidemiology*
;
Female
;
HIV Infections/epidemiology*
;
Hepatitis C/diagnosis*
;
Humans
;
Logistic Models
;
Male
;
Methadone/therapeutic use*
;
Morphine
;
Needle Sharing
;
Opiate Substitution Treatment
;
Prevalence
;
Risk Factors
;
Sexual Behavior
;
Substance Abuse, Intravenous/drug therapy*
;
Substance-Related Disorders

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