Integrated Proteomics and Metabolomics Analysis of Rat Testis: Mechanism of Arsenic-induced Male Reproductive Toxicity

Overview

Journal Sci Rep

Specialty Science

Date 2016 Sep 3

PMID 27585557

Citations 18

Authors

Qingyu Huang

Lianzhong Luo

Ambreen Alamdar

Jie Zhang

Liangpo Liu

Meiping Tian

Syed Ali Musstjab Akber Shah Eqani

Heqing Shen

Affiliations

Soon will be listed here.

Abstract

Arsenic is a widespread metalloid in environment, whose exposure has been associated with a broad spectrum of toxic effects. However, a global view of arsenic-induced male reproductive toxicity is still lack, and the underlying mechanisms remain largely unclear. Our results revealed that arsenic exposure decreased testosterone level and reduced sperm quality in rats. By conducting an integrated proteomics and metabolomics analysis, the present study aims to investigate the global influence of arsenic exposure on the proteome and metabolome in rat testis. The abundance of 70 proteins (36 up-regulated and 34 down-regulated) and 13 metabolites (8 increased and 5 decreased) were found to be significantly altered by arsenic treatment. Among these, 19 proteins and 2 metabolites were specifically related to male reproductive system development and function, including spermatogenesis, sperm function and fertilization, fertility, internal genitalia development, and mating behavior. It is further proposed that arsenic mainly impaired spermatogenesis and fertilization via aberrant modulation of these male reproduction-related proteins and metabolites, which may be mediated by the ERK/AKT/NF-κB-dependent signaling pathway. Overall, these findings will aid our understanding of the mechanisms responsible for arsenic-induced male reproductive toxicity, and from such studies useful biomarkers indicative of arsenic exposure could be discovered.

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