Circannual changes in free thyroxin, prolactin, testes, and relative food intake in woodchucks, Marmota monax

Circannual changes in free thyroxin, prolactin, testes, and relative food intake in woodchucks, Marmota monax

Woodchucks (n = 12-14/group) with circannual cycles entrained to northern versus southern hemisphere photoperiods were assessed monthly for 16 mo. Changes in serum total triiodothyronine (TT3), free thyroxine (T4), total thyroxine (IT4), and prolactin were determined in a subset of five animals per...

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Veröffentlicht in:American journal of physiology. Regulatory, integrative and comparative physiology integrative and comparative physiology, 1999-11, Vol.46 (5), p.R1401
Hauptverfasser: Concannon, Patrick W, Castracane, V Daniel, Rawson, Richard E, Tennant, Bud C
Format: Artikel
Sprache:eng
Schlagworte:
Androgens
Food
Hormones
Metabolism
Rodents
Thyroid gland
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Zusammenfassung:Woodchucks (n = 12-14/group) with circannual cycles entrained to northern versus southern hemisphere photoperiods were assessed monthly for 16 mo. Changes in serum total triiodothyronine (TT3), free thyroxine (T4), total thyroxine (IT4), and prolactin were determined in a subset of five animals per group. Metabolic hormone results were examined in relation to changes in body weight, food intake, and serum testosterone (n = 12-14/group).
ISSN:0363-6119
1522-1490