Effects on human peripheral erythrocytes of long-term occupational contact with chromate
10.3760/cma.j.issn.0253-9624.2017.01.009
- VernacularTitle: 长期铬酸盐职业接触对人体外周血红细胞含量的影响
- Author:
Guiping HU
1
;
Lin ZHAO
;
Jiaxing LIU
;
Lele WANG
;
Zhangjian CHEN
;
Yongming ZHANG
;
Li WANG
;
Zuchang ZHAO
;
Shanfa YU
;
Guang JIA
Author Information
1. Department of Occupational and Environmental Health, School of Public Health, Peking University, Beijing 100191, China
- Publication Type:Journal Article
- Keywords:
Chromates;
Erythrocytes;
Generalized estimating equations;
Working correlation matrix;
Cohort studies
- From:
Chinese Journal of Preventive Medicine
2017;51(1):41-46
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effects on human peripheral blood erythrocytes of long-term occupational contact with chromate.
Methods:A dynamic cohort study was conducted of chromate-exposed workers (343 cases) and non-chromate-exposed workers (73 cases) at a chromate production enterprise who were selected according to specific inclusion and exclusion criteria from 2010 to 2015. Personal information and chromate exposure information were obtained by questionnaire. A generalized estimating equation was employed to analyze the effects on human peripheral blood erythrocytes of long-term occupational contact with chromate, controlling for age, gender, smoking, alcohol consumption and body mass index.
Results:The mean ages and working ages of those entering the cohort study were 36.67 ±6.78 and 38.47 ± 7.18, respectively, for the exposure group and 8.39 ± 6.02 and 12.86 ± 8.34, respectively, for the control group. The erythrocyte content [(4.73±0.46), (4.81±0.53), (4.41±0.45)]×1012/L in the peripheral blood in the chromate exposure group was lower than that [(4.76±0.42), (4.95±0.45), (4.47±0.39)]×1012/L in the control group for the years 2010, 2011, 2012 and 2014 (t values were 0.38, 1.96, 0.92 and 1.21; P values were 0.703, 0.051, 0.358 and 0.227, respectively). The correlations between the years 2010 and 2011, 2011 and 2012, 2012 and 2014, and 2014 and 2015 were 0.667, 0.464,-0.070 and 0.020, respectively (P<0.001). The RR for males and those that consumed alcohol were 0.661 (95% CI: 0.616-0.709) and 0.910 (95% CI: 0.811- 1.201), respectively. Compared with the control group, the risk of reduced erythrocyte levels in the peripheral blood was increased by 0.915 (95% CI: 0.852- 0.982) in the chromate-exposed group.
Conclusions:The erythrocyte content of peripheral blood was reduced after long-term exposure to chromate. Maleness and alcohol consumption were factors that increased the risk of reduced peripheral blood erythrocytes in the chromate-exposed population.
