1.Research advances in work-related musculoskeletal disorders among construction workers
WANG Ze xin ZHANG Dan ying HE Zhi peng ZHANG Wen le HE Xiong da
China Occupational Medicine 2022;52(04):449-
Abstract: - ( ) ,
Work related musculoskeletal disorders WMSDs are common occupational diseases in construction workers which
have a high prevalence rate and involve a large number of construction workers. WMSDs affect daily work and quality of life of
,
patients leading to absenteeism and burden. The main body parts of construction workers suffering from WMSDs are lower back/
, , , , ,
waist neck shoulder knee elbow and hand/wrist and most of the patients are complicated in multiple sites. The prevalence
,
of WMSDs varies by site with the lower back/waist being the most common sites. The influencing factors of WMSDs in
( , , , , ,
construction workers mainly include individual factors age years of work gender smoking status sleep habits physical
, ), ( , , ,
fitness and physical exercise etc. occupational factors work load job type working posture work organization and
, )
management working environment and social psychological factors. The incidence of WMSDs is the result of multiple factors.
, ,
Therefore tertiary prevention is the key to the prevention and control of WMSDs especially the etiological prevention. Chinese
,
construction industry is in the period of rapid development and the demand of construction workers is large. It is urgent to carry
out epidemiological and intervention studies on WMSDs for construction workers to guide the formulation of relevant guidelines
and measures for prevention and control of WMSDs.
2.Research advances in work-related musculoskeletal disorders among construction workers
WANG Ze xin ZHANG Dan ying HE Zhi peng ZHANG Wen le HE Xiong da
China Occupational Medicine 2022;52(04):449-
Abstract: - ( ) ,
Work related musculoskeletal disorders WMSDs are common occupational diseases in construction workers which
have a high prevalence rate and involve a large number of construction workers. WMSDs affect daily work and quality of life of
,
patients leading to absenteeism and burden. The main body parts of construction workers suffering from WMSDs are lower back/
, , , , ,
waist neck shoulder knee elbow and hand/wrist and most of the patients are complicated in multiple sites. The prevalence
,
of WMSDs varies by site with the lower back/waist being the most common sites. The influencing factors of WMSDs in
( , , , , ,
construction workers mainly include individual factors age years of work gender smoking status sleep habits physical
, ), ( , , ,
fitness and physical exercise etc. occupational factors work load job type working posture work organization and
, )
management working environment and social psychological factors. The incidence of WMSDs is the result of multiple factors.
, ,
Therefore tertiary prevention is the key to the prevention and control of WMSDs especially the etiological prevention. Chinese
,
construction industry is in the period of rapid development and the demand of construction workers is large. It is urgent to carry
out epidemiological and intervention studies on WMSDs for construction workers to guide the formulation of relevant guidelines
and measures for prevention and control of WMSDs.
3.Research advances in work-related musculoskeletal disorders among construction workers
WANG Ze xin ZHANG Dan ying HE Zhi peng ZHANG Wen le HE Xiong da
China Occupational Medicine 2022;52(04):449-
Abstract: - ( ) ,
Work related musculoskeletal disorders WMSDs are common occupational diseases in construction workers which
have a high prevalence rate and involve a large number of construction workers. WMSDs affect daily work and quality of life of
,
patients leading to absenteeism and burden. The main body parts of construction workers suffering from WMSDs are lower back/
, , , , ,
waist neck shoulder knee elbow and hand/wrist and most of the patients are complicated in multiple sites. The prevalence
,
of WMSDs varies by site with the lower back/waist being the most common sites. The influencing factors of WMSDs in
( , , , , ,
construction workers mainly include individual factors age years of work gender smoking status sleep habits physical
, ), ( , , ,
fitness and physical exercise etc. occupational factors work load job type working posture work organization and
, )
management working environment and social psychological factors. The incidence of WMSDs is the result of multiple factors.
, ,
Therefore tertiary prevention is the key to the prevention and control of WMSDs especially the etiological prevention. Chinese
,
construction industry is in the period of rapid development and the demand of construction workers is large. It is urgent to carry
out epidemiological and intervention studies on WMSDs for construction workers to guide the formulation of relevant guidelines
and measures for prevention and control of WMSDs.
4.Research advances in work-related musculoskeletal disorders among construction workers
WANG Ze xin ZHANG Dan ying HE Zhi peng ZHANG Wen le HE Xiong da
China Occupational Medicine 2022;52(04):449-
Abstract: - ( ) ,
Work related musculoskeletal disorders WMSDs are common occupational diseases in construction workers which
have a high prevalence rate and involve a large number of construction workers. WMSDs affect daily work and quality of life of
,
patients leading to absenteeism and burden. The main body parts of construction workers suffering from WMSDs are lower back/
, , , , ,
waist neck shoulder knee elbow and hand/wrist and most of the patients are complicated in multiple sites. The prevalence
,
of WMSDs varies by site with the lower back/waist being the most common sites. The influencing factors of WMSDs in
( , , , , ,
construction workers mainly include individual factors age years of work gender smoking status sleep habits physical
, ), ( , , ,
fitness and physical exercise etc. occupational factors work load job type working posture work organization and
, )
management working environment and social psychological factors. The incidence of WMSDs is the result of multiple factors.
, ,
Therefore tertiary prevention is the key to the prevention and control of WMSDs especially the etiological prevention. Chinese
,
construction industry is in the period of rapid development and the demand of construction workers is large. It is urgent to carry
out epidemiological and intervention studies on WMSDs for construction workers to guide the formulation of relevant guidelines
and measures for prevention and control of WMSDs.
5.Dietary factors and the risk of neural tube defects: a case-control study in Shanxi province, China.
Zhi-wen LI ; Ai-guo REN ; Le ZHANG ; Zhan-ying GUO ; Yong-sheng JIN ; Zhu LI
Chinese Journal of Epidemiology 2006;27(10):831-835
OBJECTIVEDietary factors that could potentially be related to the risk of birth defects are still unknown in Shanxi province, a region with high prevalence of neural tube defects(NTDs) in China. The main aim of this study was to evaluate the association between NTDs and local dietary factors.
METHODSA population-based case-control study was conducted during 2003-2005 in four selected counties of Shanxi province with 363 NTDs cases ascertained and 523 control babies without any external birth defects.
RESULTSBy multivariate logistic regression analysis, we found the NTDs risk was significantly associated with low consumption of meat and legume, high consumption of pickled vegetables, noncentralized supply of drinking water and drinking tea after adjusting for maternal education level and birth defects history. A significant dose response trend was found between the NTDs risk and the lower frequencies of meat and legume consumption and higher frequency of pickled vegetable consumption, with population attributable risks (PAR) of 69.4%, 22.0% and 18.5%, respectively. Mothers who got their drinking water from river or pond during periconceptional period were more likely to have a NTD-affected pregnancy [OR = 3.42, 95% CI: 1.44-8.09, population attributable risk (PAR) = 4.7%] compared with those who utilized tap or well water. Those who drank tea everyday had an elevated risk of having a NTD-affected pregnancy compared with those who didn't (OR = 4.65, 95% CI: 1.41-15.36, PAR = 2.6%).
CONCLUSIONHigher intake of meat and legume protects a woman from having a NTD-affected pregnancy, and consumption of pickled vegetables, drinking water from river or pond and drinking tea everyday increase the risk of having such a pregnancy in the study population.
Case-Control Studies ; China ; epidemiology ; Diet ; Female ; Humans ; Meat ; Neural Tube Defects ; epidemiology ; Pregnancy ; Risk Factors ; Vegetables ; Water Supply
6.Influenza activity in China from 2000 to 2001.
Ye ZHANG ; Zi LI ; Jun-feng GUO ; Min WANG ; Le-ying WEN ; Yuan-ji GUO
Chinese Journal of Epidemiology 2003;24(1):4-8
OBJECTIVETo understand the epidemics and antigenic drift of influenza viruses in China from 2000 to 2001.
METHODSThe viruses were grown in embryonated hen eggs with 9 - 10 days old. The egg allantoic fluids with influenza viruses were used. Virion RNA was transcribed into cDNA by reverse transcriptase while cDNA amplified by PCR. Products of PCR were purified. RNA sequence analysis was then performed. Finally, phylogenetic analysis of the sequencing data was performed with MegAlign (Version 1.03) and Editseq (Version 3.69) software.
RESULTSData from comparison of amino acid sequence on HA1 domain of HA protein molecule between H1N1 viruses isolated in 2001 and A/Shanghai/7/99 (H1N1) strain indicated that there was only one difference of amino acid located at 190 position (antigenic determinant D). However, phylogenetic analysis showed that there were two distinguishable genetically lineages of H1N1 viruses co-circulating in men in China in 2001. Two antigenically distinct genetic lineages of influenza B viruses were still existing in men in China. Most of influenza B viruses were Yamagata-like strain and there were two different amino acid sequences located at 197 and 199 position on HA1 domain of HA protein molecule, between Victoria-like virus isolated and B/Shandong/7/97 strain. When comparing amino acid sequences on HA1 protein domain of H3N2 viruses isolated in 2000 with those of A/Sydeney/5/97 (H3N2) virus, it was revealed that there were 7 - 8 differences of amino acid sequences between them. However, there were four differences related to amino acid sequences on HA1 protein domain between H3N2 viruses isolated in 2000 and in 2001. These results were further demonstrated by analysis of phylogenic tree.
CONCLUSIONSInfluenza was not prevalent in China from 2000 to 2001. The antigenic drifts of H3N2 and B/Victoria-like viruses occurred. Two antigenically distinct genetic lineages of influenza B viruses were still co-circulating in men in China. Two genetically distinct lineages of influenza A (H1N1) virus were also co-circulating in men in China.
Antigens, Viral ; genetics ; China ; epidemiology ; DNA, Viral ; genetics ; Female ; Genes, Viral ; genetics ; Genetic Variation ; Hemagglutinin Glycoproteins, Influenza Virus ; genetics ; Humans ; Influenza A virus ; classification ; genetics ; immunology ; isolation & purification ; Influenza B virus ; classification ; genetics ; immunology ; isolation & purification ; Influenza, Human ; epidemiology ; virology ; Male ; Orthomyxoviridae ; classification ; genetics ; Phylogeny ; Reverse Transcriptase Polymerase Chain Reaction ; Sentinel Surveillance ; Sequence Analysis, RNA
7.Epidemiology of 1918 flu.
Cui-Ling XU ; Lei YANG ; Le-Ying WEN ; Ye LIU ; Jie DONG ; Yuan-Ji GUO ; De-Xin LI ; Yue-Long SHU
Chinese Journal of Virology 2009;25 Suppl():23-26
Animals
;
Global Health
;
History, 20th Century
;
Humans
;
Influenza A virus
;
genetics
;
isolation & purification
;
Influenza, Human
;
epidemiology
;
history
;
mortality
;
virology
;
Orthomyxoviridae Infections
;
epidemiology
;
veterinary
;
virology
;
Swine
;
Swine Diseases
;
epidemiology
;
virology
8.Review on the etiological property of 1968 Hong Kong flu virus (H3N2).
Ning DU ; Xiao-Xing YANG ; Yu LAN ; Le-Ying WEN ; Xiao-Dan LI ; Rong-Bao GAO ; Yuan-Ji GUO ; De-Xin LI ; Yue-Long SHU
Chinese Journal of Virology 2009;25 Suppl():17-20
9.Proton magnetic resonance spectroscopy of the thalamus and hypothalamus in patients with first-episode depression.
Rui YANG ; Xiao-ping WU ; Xiao-ying BAI ; Wen-de NING ; Jun-le YANG ; Zhi-chuan XIE
Journal of Southern Medical University 2009;29(12):2442-2445
OBJECTIVETo investigate the presence of abnormal metabolism in the thalamus and hypothalamus in patients with first-episode depression.
METHODSThirty drug-naive patients with first-episode depression and 30 age-matched controls were scanned with proton magnetic resonance spectroscopy ((1)H-MRS) for Naa, Cho, Cr and mI.
RESULTSCompared with the control group, the patients showed significantly reduced mI and mI/Cr of the hypothalamus, reduced mI/Cr of the left thalamus, and lowered Cho, ml, and ml/Cr of the right thalamus (P<0.05).
CONCLUSIONPatients with first-episode depression may have myo-inositol and phosphoric acid metabolism disorder in the thalamus and hypothalamus with malfunction of cellular osmotic pressure adjustment mechanism. Abnormal mI/Cr in the thalamus and hypothalamus may represent an important biochemical change in advanced patients with depression.
Adolescent ; Adult ; Case-Control Studies ; Choline ; metabolism ; Creatine ; metabolism ; Depression ; diagnosis ; Female ; Humans ; Hypothalamus ; metabolism ; Inositol ; metabolism ; Magnetic Resonance Spectroscopy ; methods ; Male ; Middle Aged ; Protons ; Thalamus ; metabolism ; Young Adult
10.The study of multiple RT-PCR-based reverse dot blot hybridization technique for detecting influenza viruses.
Liang YANG ; Xiao-mei ZHANG ; Xiao-guang ZHANG ; Jing MA ; Min WANG ; Le-ying WEN ; Da-yan WANG ; Tian BAI ; Yue-long SHU ; Yong-hua QIAN ; Yi ZENG
Chinese Journal of Experimental and Clinical Virology 2010;24(5):383-385
OBJECTIVETo establish a multiplex RT-PCR-based reverse dot blot hybridization technique to detect influenza viruses.
METHODSObtain the HA nucleotide sequences of seasonal influenza H1N1, seasonal influenza H3N2, influenza H1N1 and human avian influenza H5N1 from GenBank. Design primers in conservative district and probes t in high variable region respectively, after analyzing the HA nucleotide sequences of influenza virus through the Vector NTI 9.0. Establish and optimize multiple RT-PCR system by comparing amplification efficiency and specificity at different primer concentrations. Establish the reverse dot hybridization system after optimizing the concentration of probes. To compare the sensitivity and specificity of this technique and the general RT-PCR Method through extracting the viral RNA of the mentioned influenza virus which are to be the reference substance.
RESULTSSuccessfully establish a multiplex RT-PCR-based reverse dot blot hybridization technique for detecting influenza viruses. This technique is 100-1000 times more sensitive than gel electrophoresis method, and it has a good specificity.
CONCLUSIONSuccessfully established multiplex RT-PCR-based reverse dot blot hybridization technique for detecting influenza viruses.
Humans ; Influenza A Virus, H1N1 Subtype ; genetics ; isolation & purification ; Influenza A Virus, H3N2 Subtype ; genetics ; isolation & purification ; Influenza A Virus, H5N1 Subtype ; genetics ; isolation & purification ; Influenza, Human ; diagnosis ; virology ; Nucleic Acid Hybridization ; methods ; Reverse Transcriptase Polymerase Chain Reaction ; methods ; Sensitivity and Specificity