Chronic exposure to short photoperiod inhibits free thyroxine index and plasma levels of TSH, T4, triiodothyronine (T3) and cholesterol in female syrian hamsters

M. K. Vaughan, M. C. Powanda, B. A. Richardson, Thomas S King, Linda Y Johnson, Russel J Reiter

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

1. 1. Chronic exposure of female Syrian hamsters (Mesocricetus auratus) for 9 weeks to a short photoperiod (10L:14D) depressed the pituitary-thyroid axis as indicated by a drop in circulating titers of thyroid stimulating hormone (TSH), thyroxine (T4), triiodothyronine (T3) and the free thyroxine index (FT4I) compared to animals maintained under long photoperiodic conditions (14L:10D). 2. 2. Short day treatment also reduced plasma cholesterol levels. 3. 3. Neither plasma triglycerides, glucose nor growth hormone (GH) levels differed between hamsters exposed to short or long daily photoperiods.

Original languageEnglish (US)
Pages (from-to)615-618
Number of pages4
JournalComparative Biochemistry and Physiology -- Part A: Physiology
Volume71
Issue number4
DOIs
StatePublished - 1982

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Mesocricetus
Photoperiod
Triiodothyronine
Thyrotropin
Thyroxine
Cholesterol
Plasmas
Cricetinae
Growth Hormone
Thyroid Gland
Animals
Triglycerides
Glucose

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Biochemistry

Cite this

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title = "Chronic exposure to short photoperiod inhibits free thyroxine index and plasma levels of TSH, T4, triiodothyronine (T3) and cholesterol in female syrian hamsters",
abstract = "1. 1. Chronic exposure of female Syrian hamsters (Mesocricetus auratus) for 9 weeks to a short photoperiod (10L:14D) depressed the pituitary-thyroid axis as indicated by a drop in circulating titers of thyroid stimulating hormone (TSH), thyroxine (T4), triiodothyronine (T3) and the free thyroxine index (FT4I) compared to animals maintained under long photoperiodic conditions (14L:10D). 2. 2. Short day treatment also reduced plasma cholesterol levels. 3. 3. Neither plasma triglycerides, glucose nor growth hormone (GH) levels differed between hamsters exposed to short or long daily photoperiods.",
author = "Vaughan, {M. K.} and Powanda, {M. C.} and Richardson, {B. A.} and King, {Thomas S} and Johnson, {Linda Y} and Reiter, {Russel J}",
year = "1982",
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language = "English (US)",
volume = "71",
pages = "615--618",
journal = "Comparative Biochemistry and Physiology - A Physiology",
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T1 - Chronic exposure to short photoperiod inhibits free thyroxine index and plasma levels of TSH, T4, triiodothyronine (T3) and cholesterol in female syrian hamsters

AU - Vaughan, M. K.

AU - Powanda, M. C.

AU - Richardson, B. A.

AU - King, Thomas S

AU - Johnson, Linda Y

AU - Reiter, Russel J

PY - 1982

Y1 - 1982

N2 - 1. 1. Chronic exposure of female Syrian hamsters (Mesocricetus auratus) for 9 weeks to a short photoperiod (10L:14D) depressed the pituitary-thyroid axis as indicated by a drop in circulating titers of thyroid stimulating hormone (TSH), thyroxine (T4), triiodothyronine (T3) and the free thyroxine index (FT4I) compared to animals maintained under long photoperiodic conditions (14L:10D). 2. 2. Short day treatment also reduced plasma cholesterol levels. 3. 3. Neither plasma triglycerides, glucose nor growth hormone (GH) levels differed between hamsters exposed to short or long daily photoperiods.

AB - 1. 1. Chronic exposure of female Syrian hamsters (Mesocricetus auratus) for 9 weeks to a short photoperiod (10L:14D) depressed the pituitary-thyroid axis as indicated by a drop in circulating titers of thyroid stimulating hormone (TSH), thyroxine (T4), triiodothyronine (T3) and the free thyroxine index (FT4I) compared to animals maintained under long photoperiodic conditions (14L:10D). 2. 2. Short day treatment also reduced plasma cholesterol levels. 3. 3. Neither plasma triglycerides, glucose nor growth hormone (GH) levels differed between hamsters exposed to short or long daily photoperiods.

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