6533b7dbfe1ef96bd12700b2

RESEARCH PRODUCT

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

B. KosarasH. A. WelkerLutz VollrathB. Mess

subject

endocrine systemmedicine.medical_specialtyHistologyBiologyPineal GlandPathology and Forensic MedicineMelatoninGonadotropin-Releasing HormonePineal glandPregnancyInternal medicinemedicineAnimalsMelatoninRats Inbred StrainsCell BiologyDiestrusRatsEndocrinologymedicine.anatomical_structurenervous systemHypothalamusSynapsesFemalesense organshormones hormone substitutes and hormone antagonistsmedicine.drug

description

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.

yearjournalcountryeditionlanguage
1983-02-01Cell and tissue research
10.1007/bf00214988https://pubmed.ncbi.nlm.nih.gov/6342792