The prevalence and risk factors of work related musculoskeletal disorders among electronics manufacturing workers: a cross-sectional analytical study in China.

Objectives: To describe the prevalence of self-reported musculoskeletal disorders among workers in the electronics manufacturing industry and to investigate the relations between work-related musculoskeletal disorders (WMSDs) and work-related variables.

Methods: An interview-based questionnaire survey was carried out in thirty electronics manufacturing factories in China in 2018. The prevalence of WMSDs was estimated using the modified Nordic Musculoskeletal Questionnaire (NMQ).

Assessment of Benchmark Dose in BEAS-2B Cells by Evaluating the Cell Relative Viability with Particulates in Motorcycle Exhaust the Air-liquid Interface Exposure.

Objective: This study aimed to use an air-liquid interface (ALI) exposure system to simulate the inhalation exposure of motorcycle exhaust particulates (MEPs) and then investigate the benchmark dose (BMD) of MEPs by evaluating cell relative viability (CRV) in lung epithelial BEAS-2B cells.

Methods: The MEPs dose was characterized by measuring the number concentration (NC), surface area concentration (SAC), and mass concentration (MC). BEAS-2B cells were exposed to MEPs at different concentrations ALI and CRV was determined using Cell Counting Kit (CCK-8) assay.

FeMoO nanorods for efficient ambient electrochemical nitrogen reduction.

Herein, FeMoO nanorods are explored as an efficient electrocatalyst for nitrogen reduction reaction (NRR) in 0.1 M NaSO solution, with an NH yield rate of 17.51 μg h mg and a high faradaic efficiency (FE) of 10.

How Work Organization Affects the Prevalence of WMSDs: A Case-control Study.

Objective: In this study, we aimed at exploring the association between work-related musculoskeletal disorders (WMSDs) and work organization based on a case-control study.

Methods: A total of 1938 workers who claimed to suffer from WMSDs were selected from Beijing, Henan, Hubei, and the Guangdong province. The control group consisted of 2009 workers employed in similar industries without severe disease or musculoskeletal discomforts.

[The epidemiological study of work-related musculoskeletal disorders and related factors among automobile assembly workers].

Objective: To investigate the work-related musculoskeletal disorders among automobile assembly workers, to discusses the related risk factors and their relationship.

Method: The selected 1508 automobile assembly workers from a north car manufacturing company were regarded as the study object. The hazard zone jobs checklist, Nordic musculoskeletal symptom questionnaire (NMQ) and pain questionnaire were used to perform the epidemiological cross-sectional and retrospective survey and study for the General status, awkward ergonomics factors and related influencing factors, and musculoskeletal disorders of workers.

[Subject analysis of direct medical cost on pneumoconiosis patients with electronic records in an iron & steel enterprise].

Objective: To study the distribution of the direct medical cost for the pneumoconiosis and to provide the clue for the trauma insurance.

Methods: 936 cases including 109,530 records were divided into several groups by the stages of pneumoconiosis and categories of the cost. The groups (stage I, stage II, stage I with tuberculosis and stage II with tuberculosis) were analyzed by descriptive statistics and non-parameter test.

A novel use of neural network model to determine the effects of multibiomarker on early health damage among Chinese steel workers.

Coke-oven workers are exposed to many kinds of pollutants that can cause health damage even lead to carcinogenesis. Therefore, it is critical to identify biomarkers that predict early health damage in these exposed individuals in molecular epidemiological studies. We applied an artificial neural network (ANN) model to the identification of such predictors in a study of coke-oven workers.

[Analysis of direct medical cost on pneumoconiosis patients with questionnaires in an iron & steel enterprise].

Objective: To study the distribution of the direct medical cost for the pneumoconiosis and provide a clue for the compensation.

Methods: According to the electronic records for the medical cost of pneumoconiosis, 237 patients were investigated with questionnaires. Their medical cost was described by disability levels, types of work, the categories of tuberculosis, ages and length of work.

[Mutagen sensitivity in peripheral blood lymphocytes among coke-oven workers].

Objective: To investigate the sensitivity to bleomycin (BLM) in peripheral blood lymphocytes (PBL) among coke-oven workers.

Methods: Ninty-four coke-oven workers with exposure to a high level of polycyclic aromatic hydrocarbons and 64 non-coke-oven workers (control) were recruited into this study. PBL was challenged by 8 microg/ml BLM, a known carcinogen, to induce certain amount of DNA damage, the difference of olive tail moment (TM) measured by comet assay before and after BLM treatment reflected the sensitivity towards mutagens.

Association between delta-aminolevulinic acid dehydratase (ALAD) polymorphism and blood lead levels: a meta-regression analysis.

A meta-regression analysis was undertaken to evaluate the association between delta-aminolevulinic acid dehydratase (ALAD) genotypes and blood lead levels obtained from data published in various journals. In total, 15 studies were included in the final analysis. Both fixed effects and random effects models were used to undertake the pooled analysis.

[Relationship of polycyclic aromatic hydrocarbon exposure with peripheral blood lymphocyte DNA damage in coke oven workers].

Objective: To investigate the relationship between lymphocyte DNA damage and polycyclic aromatic hydrocarbons (PAHs) exposure in coke oven workers.

Methods: Two hundred and thirty-five coke oven workers and 30 controls were selected in this study. Alkaline single-cell gel electrophoresis was used to evaluate the lymphocyte DNA damage, HPLC was employed to measure 1-hydroxypyrene levels in spot urine samples which were obtained at the end of a workweek (4 days of 8 hours/day) and personal information including occupational exposure, age, sex, smoking and drinking status was collected by the questionnaire.

[A study on the inherited susceptibility of chromosomal damage in peripheral blood lymphocytes among coke oven workers].

Objective: To investigate the association between polymorphisms of metabolic enzyme genes and chromosomal damage risk in peripheral blood lymphocytes among coke oven workers.

Methods: One hundred and fourty-nine coke oven workers and 24 referents without occupational polycyclic aromatic hydrocarbons (PAH) exposure were recruited in this study. Urinary 1-hydroxypyrene levels were measured as the internal dose of PAH exposure.

[Genetic damage in peripheral blood lymphocyte of coke oven workers].

Objective: To investigate DNA and chromosome damage in peripheral blood lymphocyte of coke oven workers exposed to polycyclic aromatic hydrocarbons (PAHs).

Methods: One hundred and thirty-seven coke oven workers and 50 controls without occupational PAHs exposure were investigated. Comet assay and cytokinesis-block micronucleus (CBMN) detection were used to evaluate DNA and chromosomal damage levels in peripheral blood lymphocyte.

[A study on the relationship between urinary 1-hydroxypyrene level and early genetic effect among coke oven workers].

Objective: To investigate the relationship between the urinary 1-hydroxypyrene level and cytokinesis-block micronucleus and the olive moment of comet assay in peripheral blood lymphocyte in coke oven workers.

Methods: One hundred and thirty-three workers from a coke plant and 28 referents without occupational PAH exposure were recruited in this study. Urinary level of 1-hydroxypyrene was measured by alkaline hydrolysis combined with high performance liquid chromatography as an internal exposure dose, and the DNA and chromosomal damage of peripheral blood lymphocyte were evaluated with comet assay and cytokinesis-block micronucleus method.