Literature DB >> 6342792

Depressive effect of LHRH on the numbers of "synaptic" ribbons and spherules in the pineal gland of diestrous rats.

B Kosaras, H A Welker, B Mess, L Vollrath.   

Abstract

Previous studies have shown that LHRH or LHRH-like substances are present in the pineal gland. In order to investigate whether exogenous LHRH may affect the pineal gland, in the present study the effects of a single dose of LHRH (1 microgram, i.p.) on pineal "synaptic" ribbons and spherules as well as serum melatonin levels were examined in diestrous Wistar rats. One hour after the injection both ribbons and spherules exhibited a statistically significant decrease in number. Serum melatonin levels were not affected. It is concluded that humoral feedback mechanisms may exist between the hypothalamus and the pineal gland.

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Year:  1983        PMID： 6342792     DOI： 10.1007/bf00214988

Source DB:  PubMed          Journal:  Cell Tissue Res        ISSN： 0302-766X            Impact factor:   5.249


  32 in total

Review 1.  Immunohistochemical localization of hypothalamic hormones at the electron microscope level.

Authors:  G Pelletier
Journal:  Curr Top Mol Endocrinol       Date:  1976

2.  Gonadotrophin- and prolactin-induced increase of rat pineal hydroxyindole-O-methyl transferase: involvement of the sympathetic nervous system.

Authors:  D P Cardinali; C A Nagle; J M Rosner
Journal:  J Endocrinol       Date:  1976-02       Impact factor: 4.286

3.  Ultrastructure of rat pineal gland in organ culture; influence of norepinephrine, dibutyryl cyclic adenosine 3',5'-monophosphate and adenohypophysis.

Authors:  M Karasek
Journal:  Endokrinologie       Date:  1974-11

4.  Effect of TRH on cyclic AMP formation in human pineal gland homogenates.

Authors:  D Tsang; S Lal; M H Finlayson
Journal:  Brain Res       Date:  1980-04-21       Impact factor: 3.252

5.  Gonadotropin-releasing hormone and thyrotropin-releasing hormone: distribution and effects in the central nervous system.

Authors:  J F Wilber; E Montoya; N P Plotnikoff; W F White; R Gendrick; L Renaud; J B Martin
Journal:  Recent Prog Horm Res       Date:  1976

6.  Neonatal development of circadian rhythm in "synaptic" ribbon numbers in the rat pinealocyte.

Authors:  T S King; W J Dougherty
Journal:  Am J Anat       Date:  1980-04

7.  The pineal gland: a supplemental source of hypothalamic-releasing hormones.

Authors:  W F White; M T Hedlund; G F Weber; R H Rippel; E S Johnson; J F Wilber
Journal:  Endocrinology       Date:  1974-05       Impact factor: 4.736

8.  Biological and immunological luteinising hormone-releasing hormone (LH-RH) activity of the ovine pineal.

Authors:  R S Carson; C D Matthews; J K Findlay; R G Symons; H G Burger
Journal:  Neuroendocrinology       Date:  1977       Impact factor: 4.914

9.  Radioimmunoassay of melatonin: human serum and cerebrospinal fluid.

Authors:  J Adrendt; L Wetterberg; T Heyden; P C Sizonenko; L Paunier
Journal:  Horm Res       Date:  1977

10.  Immunoreactive luteinizing hormone-releasing hormone (LHRH) in ovine pineal glands.

Authors:  J E Wheaton
Journal:  Horm Metab Res       Date:  1980-07       Impact factor: 2.936
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  6 in total

1.  Effects of LHRH, progesterone, estradiol-17 beta and dexamethasone in vitro on pineal synaptic ribbons and serotonin N-acetyltransferase activity in diestrous rats.

Authors:  S K Saidapur; A Seidel; L Vollrath
Journal:  J Neural Transm Gen Sect       Date:  1991

2.  Influence of melatonin and serotonin on the number of rat pineal "synaptic" ribbons and spherules in vitro.

Authors:  L Vollrath; M Karasek; B Kosaras; J Kunert-Radek; A Lewinski
Journal:  Cell Tissue Res       Date:  1985       Impact factor: 5.249

3.  Circadian changes in synaptic ribbons and spherules in pinealocytes of the Syrian hamster (Mesocricetus auratus).

Authors:  C Díaz; M Alvarez-Uría; J Tolivia; J M López
Journal:  Cell Tissue Res       Date:  1990-10       Impact factor: 5.249

4.  Correlation of the number of pineal "synaptic" ribbons and spherules with the level of serum melatonin over a 24-hour period in male rabbits.

Authors:  F Martinez Soriano; H A Welker; L Vollrath
Journal:  Cell Tissue Res       Date:  1984       Impact factor: 5.249

5.  Melatonin formation in different parts of the guinea-pig pineal complex as assessed over 24 hours.

Authors:  H A Welker; L Vollrath
Journal:  J Neural Transm       Date:  1985       Impact factor: 3.575

6.  A quantitative study of synaptic ribbons in pinealocytes of adult Chinese hamsters (Cricetulus griseus) under different photoperiodic conditions.

Authors:  I Aida; Y Sakai; S Matsushima; Y Kamiguchi; K Mikamo
Journal:  Cell Tissue Res       Date:  1986       Impact factor: 5.249
  6 in total

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