Effect of long-term pinealectomy on serum LH levels and on cerebral serotonin metabolism in adult male rats.
Two months after pinealectomy carried out in adult male rats previously exposed to a long photoperiod (L:D 14:10) during 10 weeks, the weight of seminal vesicles significantly increased in comparison with Sham-operated animals. Nevertheless, the weights of testes and ventral prostate did not change significantly. The serum LH concentration increased significantly by pinealectomy. The levels of serotonin and 5-hydroxiindolacetic acid significantly decreased in the hypothalamus and midbrain after pinealectomy.
D000818:Animals; D001921:Brain / Q000378:metabolism*; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D009929:Organ Size; D010507:Periodicity; D010870:Pineal Gland / Q000502:physiology*; D011467:Prostate / Q000033:anatomy & histology; D051381:Rats; D011919:Rats, Inbred Strains; D012669:Seminal Vesicles / Q000033:anatomy & histology; D012701:Serotonin / Q000378:metabolism*
D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D007986:Luteinizing Hormone