Circadian rhythms in accessory sex gland function in the male rat.
Alterations in various parameters of accessory sex gland function were monitored during two separate 24 h periods in adult male rats, and compared to fluctuations in the circulating levels of testosterone, prolactin, corticosterone and LH. Bimodal circadian rhythms in ventral prostate prolactin binding, cytosolic oestrogen binding and seminal vesicle weight could be discerned which appeared to be related to a similar rhythmicity in circulating testosterone levels, but with a phase shift of 3 h. Prostatic membrane bound adenylyl cyclase activities (basal and hormone stimulated) and prostatein concentrations followed different patterns possibly correlated to other endocrine changes.
D000262:Adenylyl Cyclases / Q000378:metabolism; D000302:Adrenal Cortex / Q000502:physiology*; D000727:Androgen-Binding Protein / Q000378:metabolism; D000818:Animals; D002940:Circadian Rhythm; D003345:Corticosterone / Q000097:blood; D003600:Cytosol / Q000378:metabolism; D004967:Estrogens / Q000378:metabolism; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D011388:Prolactin / Q000097:blood / Q000378:metabolism; D011467:Prostate / Q000201:enzymology / Q000378:metabolism / Q000502:physiology*; D060789:Prostatein; D051381:Rats; D011919:Rats, Inbred Strains; D060765:Secretoglobins; D012669:Seminal Vesicles / Q000502:physiology; D013737:Testis / Q000378:metabolism / Q000502:physiology*; D013739:Testosterone / Q000097:blood; D014598:Uteroglobin; D060788:Mammaglobin B
D000262:Adenylyl Cyclases; D000727:Androgen-Binding Protein; D003345:Corticosterone; D004967:Estrogens; D007986:Luteinizing Hormone; D011388:Prolactin; D060789:Prostatein; D060765:Secretoglobins; D013739:Testosterone; D014598:Uteroglobin; C511484:Scgb1d2 protein, rat; C511483:Scgb1d4 protein, rat; C556468:Scgb2a1 protein, rat; D060788:Mammaglobin B