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Steroidogenic gene expression following D-aspartate treatment in frog testis.

Abstract：

:Previous studies have provided evidence that D-Asp plays a role in steroid-mediated reproductive biology in amphibians, reptiles, birds and mammals. To examine the molecular involvement of D-Asp on steroidogenic pathway regulation, we analysed the expression of StAR, P450 aromatase and 5αRed2 mRNAs in Pelophylax esculentus testis, either in relation to the reproductive cycle or D-Asp treatment. Basal StAR mRNA levels, as well as D-Asp and testosterone concentrations, were higher in reproductive than in post-reproductive frogs. D-Asp treatment increased StAR mRNA expression and immunolocalisation in both the reproductive and post-reproductive periods. In control testis, aromatase mRNA levels were higher in the post-reproductive period, but following D-Asp administration, they increased only in the reproductive period. The level of 5αRed2 mRNA was higher in reproductive frogs than in post-reproductive frogs, and it increased after D-Asp treatment only in the post-reproductive phase. Our results suggest that, in P. esculentus testis, D-Asp increases StAR mRNA in both periods, and P450 aromatase and 5αRed2 mRNAs at different points during the reproductive cycle.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Burrone L,Raucci F,Di Fiore MM

doi

10.1016/j.ygcen.2011.10.006

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

109-17

issue

1

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(11)00389-3

journal_volume

175

pub_type

杂志文章

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