First report of a stunt nematode on corn in Gansu Province, China.

During a survey of plant parasitic nematodes in 2019, at Gansu Province, China, the stunt nematode was found parasitizing corn seedlings. Females, males and juveniles of were observed on soil and roots samples of corn after processing and extraction. This population of stunt nematodes was identified based on morphological and by sequencing the ITS1 region of rDNA and D2/D3 fragments of the 28 S rRNA.

[Investigation on occupational stress of workers in clean workshops of electric company].

Objective: The aim is to learn the situation of work stress, burnout and depression in clean workshops of electronic company by investigation, and provide the clues for the further interventions as well as the basic data for the future evaluation.

Methods: The survey was carried out in a electronic company in Xishan,Wuxi city. The subjects including all the 395 employees in clean workshops and 205 in ordinary workshops were asked to fill in an anonymous cross-sectional questionnaire, in which the distributions of age, gender, job duration, working time and working strength were similar between two kinds of workshops.

[Quality of life of inpatients with coal workers' pneumoconiosis and its influential factors].

Objective: To investigate the quality of life ( QOL) of inpatients with coal workers' pneumoconiosis( CWP) and analyse its influential factors, and to provide a theoretical basis for effective control measures.

Methods: Eighty-eight CWP patients in a hospital were included in the study. A questionnaire survey was conducted in them using a self-designed QOL scale.

[Silica induced α-SMA expression in HBE cell line by targeting the PI3K/Akt pathway].

Objective: To explore the role of the phosphatidylinositol 3 kinase/protein kinase B (PI3K/Akt) pathway in silica-induced α-SMA (α smooth muscle actin) expression in HEB (human bronchial epithelial) cell.

Methods: The cultured HBE cells were divided into 5 groups: control, silica, PI3K inhibitor (Ly294002), both PI3K inhibitor (Ly294002) and silica at the same time and the inhibitor 24 h ahead of silica. The final concentrations of PI3K inhibitor and silica were 10 µmol/L and 100 µg/ml, respectively.

[Studing the health status of workers occupationally exposed to carbon disulfide].

Objective: To study the effects of carbon disulfide (CS(2)) on the health of workers, and to provide the basis for the further preventive measures.

Methods: The occupational health examination of 881 workers exposed to CS(2) in a chemical fiber factory was carried out according to the national technical standard of occupational health surveillance. The time weighted average concentrations (TWA) of CS(2) in the workshops of short silk and long silk exceeded the national standard, The workers in these two workshops served as the high exposure group.

[Clinical characteristics of the patients with occupational chronic carbon disulfide poisoning in a chemical fiber factory of Nanjing].

Objective: To analyze the clinical characteristics of 267 cases with occupational chronic carbon disulfide (CS(2)) poisoning and to provide the basis for revising the items of periodical medical examination of workers occupationally exposed to CS(2).

Methods: The subjects of present study were 267 patients with mild CS(2) poisoning diagnosed according to "Diagnostic Criteria of Occupational Chronic Carbon Disulfide Poisoning (GBZ4-2002)" from April in 2006 to May in 2010. All patients were from the same chemical fiber factory.

[Annexin A5 gene polymorphism (-1C/T) and the susceptibility to pneumoconiosis in coal works].

Objective: To explore the role of -1C/T single nucleotide polymorphism within Annexin A5 gene in the genetic susceptibility to coal worker's pneumoconiosis (CWP).

Methods: Four hundred and seventy CWP Han chinese patients and 428 Han chinese controls were enclosed in present case-control study. All subjects were exposed to coal dusts.

[The analyses on dust pollution of one underground iron mine from 1991 to 2010].

Objective: The main purpose of this work was to give the evidence of reasonable and feasible dust control measures which will be taken in the future by analyzing the trend of dust concentration from 1991 to 2010 and identifying working faces with the severe dust contamination in one underground iron mine.

Methods: The data was from routine monitoring between the years 1991 and 2010, which enclosed the total dust concentrations and silica contents. China National Standard of Occupational exposure limits for hazardous agents in the workplace used to judge whether the dust concentration exceeded the National Standard.

[Polymorphisms in Fas pathway genes and risk of coal worker pneumoconiosis].

Objective: To explore the possible association between six single nucleotide polymorphisms (SNPs) of Fas pathway genes and the risks of coal worker pneumoconiosis (GWP).

Methods: This case-control study consisted of 511 male patients with CWP and 530 male controls from the same coal mines. Five SNPs of Fas pathway genes were detected by restriction fragment length polymorphisms (PCR-RFLP) and CASP3 (rs6948) was genotyped by quantitative real-time polymerase chain reaction (qRT-PCR).

[Analysis on the incidence of coal workers' pneumoconiosis from 2003 to 2008 in a coal mining group].

Objective: Analyzed associations among the incidence of coal workers' pneumoconiosis from 2003 to 2008, jobs, exposure years and cumulative total dust exposure levels (CTE) and found the current characteristics of the mine incidence of pneumoconiosis disease.

Methods: collected the health care information of the new diagnosed pneumoconiosis of underground mine workers from 2003 to 2008 and the dust monitoring data of underground mine from 1949 and estimated the personnel cumulative total dust exposure levels (CTE); analyzed the incidence features of the new diagnosed pneumoconiosis.

Results: The rates of health surveillance of workers were gradually improved from 2003 to 2008 and 296 new coal workers pneumoconiosis were diagnosed.

[SMAD4 gene polymorphisms and genetic susceptibility of coal work's pneumoconiosis].

Objective: to explore whether 6 tagging single nucleotide polymorphisms (SNPs) within SMAD4 gene were involved in the genetic susceptibility of coal worker's pneumoconiosis (CWP) by case-control study.

Methods: this study consisted of 438 CWP patients and 448 controls. All study subjects were Han Chinese, underground coal miners and recruited from coal mines of Xuzhou Mining Business Group Co Ltd.

[Relationship between FAS/FASL gene polymorphisms and susceptibility of coal worker's pneumoconiosis].

Objective: To investigate the effects of FAS and FASL gene polymorphisms on genetic susceptibility of coal worker's pneumoconiosis and their relationship to the pulmonary fibrosis.

Methods: 340 with coal worker's pneumoconiosis (CWP) and 312 coal mine workers (controls) exposed to the coal dusts were selected. FAS-1377G > A, FAS-670A > G and FASL-844T > C gene polymorphisms were analyzed by PCR-RFLP techniques.

Associations of blood pressure and arterial compliance with occupational noise exposure in female workers of textile mill.

Background: There are few studies on the arterial compliance of noise exposure. The purpose of this study was to understand the relationship between hearing loss, blood pressure and arterial compliance of female workers who exposed to occupational noise in a textile mill.

Methods: The noise levels in the workplace were measured with a HS6288 sound level meter.

[Relationship between the aldosterone synthase (CYP11B2)-344C/T polymorphism and small artery compliance].

Objective: To investigate the relationship between the aldosterone synthase (CYP11B2)-344C/T polymorphism and small artery compliance (C(2)).

Methods: C(2) was measured by CVProfilor DO-2020 in 224 subjects, including 123 subjects with an abnormal C(2) and 101 normal controls. Genotypes of CYP11B2 were determined by polymerase chain reaction-based restriction fragment length polymorphism analysis.