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Effects of acrolein on the production of corticosterone in male rats.

Abstract：

:Acrolein, an α, β-unsaturated aldehyde, exists in a wide range of sources. Acrolein can be not only generated from all types of smoke but also produced endogenously from the metabolism by lipid peroxidation. The cellular influence of acrolein is due to its electrophilic character via binding to and depleting cellular nucleophiles. Although the toxicity of acrolein has been extensively studied, there is relatively little information about its impact on hormone release. This study aimed at the effect of acrolein on hypothalamic-pituitary-adrenal (H-P-A) axis. In an in vivo study, male rats were administrated with acrolein for 1 or 3days. The plasma corticosterone in response to a single injection of adrenocorticotropic hormone (ACTH) increased slowly in acrolein-pretreated rats than in control rats. Further investigating the steroidogenic pathway, the protein expressions of steroidogenic acute regulatory protein (StAR) and the upper receptor-melanocortin 2 receptor (MC2R) were attenuated in acrolein-treated groups. Another experiment using trilostane showed less activity of P450scc in zona fasciculata-reticularis (ZFR) cells in acrolein-treated groups. In addition to the suppressed ability of corticosterone production in ZFR cells, acrolein even had extended influence at higher concentrations. The lower ACTH was observed in the plasma from acrolein-pretreated rats. In an in vitro study, ZFR cells were incubated with acrolein and the results showed that corticosterone concentrations in media were decreased in a dose-dependent manner. Acrolein also desensitized the response of the ZFR cells to ACTH. These results suggested that acrolein decreased the releasing ability of corticosterone via an inhibition on the response of ZFR cells to ACTH and the reduction of protein expressions of StAR and MC2R as well as the activity of P450scc in rat ZFR cells. The present evidences showed that the H-P-A axis was affected by the administration of acrolein.

journal_name

Steroids

journal_title

Steroids

authors

Yeh YH,Chou JC,Weng TC,Lieu FK,Lin JY,Yeh CC,Hu S,Wang PS,Idova G,Wang SW

doi

10.1016/j.steroids.2016.03.009

subject

Has Abstract

pub_date

2016-07-01 00:00:00

pages

139-147

eissn

0039-128X

issn

1878-5867

pii

S0039-128X(16)00076-3

journal_volume

111

pub_type

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