Literature DB >> 6124346

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, T S King, L Y Johnson, R J Reiter.   

Abstract

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. Short day treatment also reduced plasma cholesterol levels. 3. Neither plasma triglycerides, glucose nor growth hormone (GH) levels differed between hamsters exposed to short or long daily photoperiods.

Entities:  

Mesh：

Substances：

Year:  1982        PMID： 6124346     DOI： 10.1016/0300-9629(82)90212-2

Source DB:  PubMed          Journal:  Comp Biochem Physiol A Comp Physiol        ISSN： 0300-9629


  4 in total

1.  Photoperiod-dependent changes in TSH-like immunoreactivity of cells in the hypophysial pars tuberalis of the Djungarian hamster, Phodopus sungorus.

Authors:  W Wittkowski; M Bergmann; K Hoffmann; F Pera
Journal:  Cell Tissue Res       Date:  1988-01       Impact factor: 5.249

2.  The influence of natural short photoperiodic and temperature conditions on plasma thyroid hormones and cholesterol in male Syrian hamsters.

Authors:  M K Vaughan; G C Brainard; R J Reiter
Journal:  Int J Biometeorol       Date:  1984-07       Impact factor: 3.787

3.  Changes in TSH-immunoreactivity in the pars tuberalis and pars distalis of the fetal rat hypophysis following maternal administration of propylthiouracil and thyroxine.

Authors:  T M Böckers; H Sourgens; W Wittkowski; A Jekat; F Pera
Journal:  Cell Tissue Res       Date:  1990-05       Impact factor: 5.249

4.  Natural and synthetic analogues of melatonin and related compounds. II. Effects on plasma thyroid hormones and cholesterol levels in male Syrian hamsters.

Authors:  M K Vaughan; B A Richardson; L Y Johnson; L J Petterborg; M C Powanda; R J Reiter; I Smith
Journal:  J Neural Transm       Date:  1983       Impact factor: 3.575
  4 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.