Literature DB >> 3921594

Effects of continuous light and dark exposure on hypothalamic thyrotropin-releasing hormone in rats.

E Martino, G Bambini, G Vaudagna, M Breccia, L Baschieri.   

Abstract

The thyrotropin-releasing hormone (TRH) content in whole hypothalamus was measured by specific radioimmunoassay in rats exposed to a daily light-dark cycle (06:00-18:00 light, 18:00-06:00 dark) and in animals exposed to constant light or constant darkness for 12 days. A nyctohemeral variation of hypothalamic TRH was observed in light-dark exposed animals, while this variation was abolished by exposure either to constant light or constant darkness. These data indicate that any study involving hypothalamic TRH determination should be carried out taking into account the diurnal variation and the effect of environmental light exposure.

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Year:  1985        PMID： 3921594     DOI： 10.1007/BF03350633

Source DB:  PubMed          Journal:  J Endocrinol Invest        ISSN： 0391-4097            Impact factor:   4.256


  12 in total

1.  Diurnal variations of medial basal and anterior hypothalamic thyroliberin [TRH] and serum thyrotropin [TSH] concentrations in male rats.

Authors:  P T Männistö; J Pakkanen; T Ranta; F Koivusalo; J Leppäluoto
Journal:  Life Sci       Date:  1978-10-02       Impact factor: 5.037

2.  Loss of bioreactivity and preservation of immunoreactivity of iodothyrotropin-releasing hormone.

Authors:  E Martino; H Seo; S Refetoff
Journal:  Endocrinology       Date:  1978-07       Impact factor: 4.736

3.  The diurnal variation of immunoreactive thyrotropin-releasing hormone and somatostatin in the cerebrospinal fluid of the rhesus monkey.

Authors:  M Berelowitz; M J Perlow; H J Hoffman; L A Frohman
Journal:  Endocrinology       Date:  1981-12       Impact factor: 4.736

4.  Ontogenetic patterns of thyrotropin-releasing hormone-like material in rat hypothalamus, pancreas, and retina: selective effect of light deprivation.

Authors:  E Martino; H Seo; A Lernmark; S Refetoff
Journal:  Proc Natl Acad Sci U S A       Date:  1980-07       Impact factor: 11.205

5.  Thyrotropin releasing hormone (TRH) in pineal and hypothalamus of the frog: effect of season and illumination.

Authors:  I M Jackson; R Saperstein; S Reichlin
Journal:  Endocrinology       Date:  1977-01       Impact factor: 4.736

6.  Distribution and concentration of TRH in the rat brain.

Authors:  C Oliver; R L Eskay; N Ben-Jonathan; J C Porter
Journal:  Endocrinology       Date:  1974-08       Impact factor: 4.736

7.  High concentration of thyrotropin-releasing hormone in pancreatic islets.

Authors:  E Martino; A Lernmark; H Seo; D F Steiner; S Refetoff
Journal:  Proc Natl Acad Sci U S A       Date:  1978-09       Impact factor: 11.205

8.  Hypothalamus-pituitary-thyroid axis interactions with pineal gland in the rat.

Authors:  G L Brammer; J E Morley; E Geller; A Yuwiler; J M Hershman
Journal:  Am J Physiol       Date:  1979-04

9.  Brain TRF immunoreactivity during various physiological and stress conditions in the rat.

Authors:  F Koivusalo; J Leppäluoto
Journal:  Neuroendocrinology       Date:  1979       Impact factor: 4.914

10.  Circadian variations in substance P, luliberin (LH-RH) and thyroliberin (TRH) contents in hypothalamic and extrahypothalamic brain nuclei of adult male rats.

Authors:  B Kerdelhue; M Palkovits; M Karteszi; A Reinberg
Journal:  Brain Res       Date:  1981-02-16       Impact factor: 3.252
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  4 in total

1.  Circadian rhythm of type II 5'deiodinase activity in the rat hypothalamic-pituitary-adrenal axis.

Authors:  M Luna; G Guzmán; L Navarro; S S de la Peña; C Valverde-R
Journal:  Endocrine       Date:  1995-08       Impact factor: 3.633

2.  Plasma thyrotropin, thyroxine, triiodothyronine, free thyroxine, free triiodothyronine, and cortisol levels in blind prepubertal boys.

Authors:  A Bellastella; T Criscuolo; A A Sinisi; S Iorio; A Mazzuca; F Parlato; L Perrone; M Faggiano
Journal:  J Endocrinol Invest       Date:  1988-03       Impact factor: 4.256

Review 3.  Neuroendocrine regulation of thyrotropin-releasing hormone (TRH) in the tuberoinfundibular system.

Authors:  R Toni; R M Lechan
Journal:  J Endocrinol Invest       Date:  1993-10       Impact factor: 4.256

4.  Effects of long-term light, darkness and oral administration of melatonin on serum levels of melatonin.

Authors:  Naser Farhadi; Majid Gharghani; Zahra Farhadi
Journal:  Biomed J       Date:  2016-03-28       Impact factor: 4.910
  4 in total

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