Characterizing the effects of acute and chronic heat stress on porcine ovarian function

An abstract of a study by Dickson et al characterizing the impacts of acute and chronic heat stress (HS) on porcine ovarian function is presented. Superoxide dismutase 1 and 5-methyl cytosine abundance were unchanged in ovaries after acute HS, although there was a tendency for SOD1 to be increased v...

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Bibliographic Details
Published in:Journal of animal science 2017-03, Vol.95, p.160
Main Authors: Dickson, M J, Nteeba, J, Bidne, K L, Hale, B J, Hager, C L, Kvidera, S K, Seibert, J T, Baumgard, L H, Ross, J W, Keating, A F
Format: Article
Language:English
Subjects:
17β-Estradiol
Abundance
AKT protein
Animal reproduction
Cytosine
Heat stress
Heat tolerance
Heatstroke
Hogs
Infertility
Insulin
Insulin receptor substrate 1
Ovaries
Reproductive system
Sex hormones
Steroidogenesis
Superoxide dismutase
Testosterone
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Summary:An abstract of a study by Dickson et al characterizing the impacts of acute and chronic heat stress (HS) on porcine ovarian function is presented. Superoxide dismutase 1 and 5-methyl cytosine abundance were unchanged in ovaries after acute HS, although there was a tendency for SOD1 to be increased via chronic HS (P < 0.1). Insulin receptor substrate 1 protein abundance was not affected by either acute or chronic HS. Steroid acute regulatory protein, the enzyme catalyzing the first step in ovarian steroidogenesis, was increased by chronic HS (P < 0.05) whereas CYP19A1 protein, the enzyme that converts testosterone to estradiol, was not affected. Phosphorylated nuclear factor kappa B and the ratio of phosphorylated AKT to total AKT were increased (P < 0.05) by chronic HS.
ISSN:0021-8812
1525-3163
DOI:10.2527/asasmw.2017.329