Get access

Dimethylarsinic acid (DMAV) changed the expressions of proliferative related factors and secretion of inflammatory cytokines in rat bladder

Authors

  • Zhang Lin,

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author
  • Liu Shengnan,

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author
  • Wang Fei,

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author
  • Song Yingli,

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author
  • Sun Qingshan,

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author
  • Sheng Wei,

    1. Shenyang Health Inspection Bureau, Tiexi District, Shenyang City, China
    Search for more papers by this author
  • Xi. Shuhua,

    Corresponding author
    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    • Correspondence to: Professor Xi Shuhua, Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, No. 92 Bei Er Road, Heping District, Shenyang, 110001, China.

      E-mail: shxi@mail.cmu.edu.cn

    Search for more papers by this author
  • Sun Guifan

    1. Department of Occupational and Environmental Health, Liaoning Provincial Key Lab of Arsenic Biological Effect and Poisoning, School of Public Health, China Medical University, Heping District, Shenyang, China
    Search for more papers by this author

ABSTRACT

Dimethylarsinic acid (DMAV), the major urinary metabolite of inorganic arsenic, is a urinary bladder carcinogen and bladder tumor promoter in adult rats. Increased urothelial cellular proliferation has been considered as an earlier phenotype in DMAV-induced bladder carcinogenesis. The present study examined the ultrastructural changes of bladder epithelial cells and expressions of proliferation factors, as well as the secretion of inflammatory cytokines in rats exposed to DMAV for 10 weeks by transmission electron microscopy (TEM), qRT-PCR, immunohistochemical staining and ELISA methods. The results showed that DMAV administered in the drinking water produced urothelial cytotoxicity and ultrastructural changes in rats. PCNA, cyclin D1 and COX-2 mRNA expressions and immunoreactivities were elevated in bladder urothelium. In addition, 200 ppm DMAV treatment increased the transforming growth factor-beta 1 (TGF-β1) secretion and decreased tumor necrosis factor-alpha (TNF)-α level in the urine of rats. These data suggest that chronic inflammation, bladder epithelium lesions and proliferation might be the basic process of the chronic toxicity effects in DMAV-treated rats. Copyright © 2014 John Wiley & Sons, Ltd.

Ancillary