Naloxone inhibits arginine vasotocin- (AVT) induced prolactin release in urethane-anesthetized male rats in vivo. 1980

D E Blask, and M K Vaughan

Arginine vasotocin (AVT) (1 microgram) elicited a two-fold increase in serum prolactin (Prl) levels 10 min following its i.v. injection into urethane-anesthetized adult male rats. At 20 min after AVT administration serum Prl concentrations had essentially returned to preinjection levels. Prior treatment of the animals with 0.2 mg/kg body weight of naloxone (Nal), an opiate antagonist, completely blocked the Prl response to a single injection of AVT. Nal itself did not alter the titers of Prl at any time point. The results suggest that the in vivo Prl-releasing effect of AVT is mediated via an interaction with opiate receptors.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008297 Male Males
D009270 Naloxone A specific opiate antagonist that has no agonist activity. It is a competitive antagonist at mu, delta, and kappa opioid receptors. MRZ 2593-Br,MRZ-2593,Nalone,Naloxon Curamed,Naloxon-Ratiopharm,Naloxone Abello,Naloxone Hydrobromide,Naloxone Hydrochloride,Naloxone Hydrochloride Dihydride,Naloxone Hydrochloride, (5 beta,9 alpha,13 alpha,14 alpha)-Isomer,Naloxone, (5 beta,9 alpha,13 alpha,14 alpha)-Isomer,Narcan,Narcanti,Abello, Naloxone,Curamed, Naloxon,Dihydride, Naloxone Hydrochloride,Hydrobromide, Naloxone,Hydrochloride Dihydride, Naloxone,Hydrochloride, Naloxone,MRZ 2593,MRZ 2593 Br,MRZ 2593Br,MRZ2593,Naloxon Ratiopharm
D011388 Prolactin A lactogenic hormone secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). It is a polypeptide of approximately 23 kD. Besides its major action on lactation, in some species prolactin exerts effects on reproduction, maternal behavior, fat metabolism, immunomodulation and osmoregulation. Prolactin receptors are present in the mammary gland, hypothalamus, liver, ovary, testis, and prostate. Lactogenic Hormone, Pituitary,Mammotropic Hormone, Pituitary,Mammotropin,PRL (Prolactin),Hormone, Pituitary Lactogenic,Hormone, Pituitary Mammotropic,Pituitary Lactogenic Hormone,Pituitary Mammotropic Hormone
D011919 Rats, Inbred Strains Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding. August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014520 Urethane Antineoplastic agent that is also used as a veterinary anesthetic. It has also been used as an intermediate in organic synthesis. Urethane is suspected to be a carcinogen. Ethyl Carbamate,Urethan,Carbamate, Ethyl
D014668 Vasotocin A nonapeptide that contains the ring of OXYTOCIN and the side chain of ARG-VASOPRESSIN with the latter determining the specific recognition of hormone receptors. Vasotocin is the non-mammalian vasopressin-like hormone or antidiuretic hormone regulating water and salt metabolism. 3-Isoleucyl Vasopressin,Arginine Oxytocin,Arginine Vasotocin,Argiprestocin,Vasopressin, Isoleucyl,Vasopressin, Non-Mammalian,(8-Arginine)Oxytocin,Argiprestocine,3 Isoleucyl Vasopressin,Isoleucyl Vasopressin,Non-Mammalian Vasopressin,Oxytocin, Arginine,Vasopressin, 3-Isoleucyl,Vasopressin, Non Mammalian,Vasotocin, Arginine
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

Related Publications

D E Blask, and M K Vaughan
December 1986, General and comparative endocrinology,
D E Blask, and M K Vaughan
January 1992, Romanian journal of endocrinology,
D E Blask, and M K Vaughan
March 1980, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.),
D E Blask, and M K Vaughan
January 1979, Progress in brain research,
D E Blask, and M K Vaughan
January 1983, Progress in neuro-psychopharmacology & biological psychiatry,
D E Blask, and M K Vaughan
January 2012, Animal science journal = Nihon chikusan Gakkaiho,
D E Blask, and M K Vaughan
June 1987, Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae,
Copied contents to your clipboard!