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ACTH stimulation in four Asian bull elephants (Elephas maximus): an investigation of androgen sources in bull elephants.

Abstract：

:The phenomenon of musth is a very stressful event, both behaviorally and physiologically. An ACTH stimulation test was conducted in four adult Asian bull elephants to investigate the possibility that the classical hypothalamic-pituitary-adrenal (HPA) axis is active during musth, resulting in an increase in adrenally produced steroids. Serum cortisol, testosterone (T), androstenedione (A4), androstenediol (A5), and dehydroepiandrosterone (DHEA) were measured. Cortisol increased 3-10 times above baseline in response to ACTH stimulation, and DHEA doubled. A4 and A5 were erratic, while testosterone decreased significantly in all bulls. The pattern of results suggests that the adrenal steroid increase which occurs during musth results from some mechanism other than the classical HPA axis.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Yon L,Kanchanapangka S,Chaiyabutr N,Stanczyk F,Meepan S,Lasley B

doi

10.1016/j.ygcen.2007.01.029

subject

Has Abstract

pub_date

2007-05-01 00:00:00

pages

246-51

issue

3

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(07)00033-0

journal_volume

151

pub_type

杂志文章

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