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Estradiol-17beta and linseed meal interact to alter visceral organ mass and hormone concentrations from ovariectomized ewes.

Abstract：

:To evaluate the estrogenic potential of secoisolariciresinol diglycoside (SDG) found in linseed meal (LSM) on visceral organ mass, IGF-I, and thyroid hormone (T(3) and T(4)) concentrations, 48 multiparous, ovariectomized ewes (54.6 +/- 1.1 kg) were used in a 3 x 4 factorial arrangement. Main effects were length of LSM feeding (0, 1, 7, or 14 d) and length of exposure to estradiol-17beta (E(2)) implant (0, 6, or 24 h prior to tissue collection). Implanting ewes with E(2) for 24h increased liver mass relative to empty body weight (EBW; g/kg EBW) compared with ewes implanted for 0 or 6 h (P or= 0.12) CYP2C or CYP3A mRNA expression or cellularity of the liver. Exogenous E(2) influenced circulating concentrations of IGF-I, T(3), and T(4). The estrogenic or anti-estrogenic potential of LSM is dependent upon the tissue, exposure to E(2), and the duration of LSM feeding. Feeding LSM during gestation, lactation, or during the grow-finish phase warrants further investigation.

journal_name

Domest Anim Endocrinol

journal_title

Domestic animal endocrinology

authors

O'Neil MR,Lardy GP,Wilson ME,Lemley CO,Reynolds LP,Caton JS,Vonnahme KA

doi

10.1016/j.domaniend.2009.05.001

subject

Has Abstract

pub_date

2009-10-01 00:00:00

pages

148-58

issue

3

eissn

0739-7240

issn

1879-0054

pii

S0739-7240(09)00040-X

journal_volume

37

pub_type

杂志文章

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