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  • Title: Regulation of vasopressin and oxytocin synthesis in anterior pituitary and peripheral tissues.
    Author: Dave JR, Culp SG, Liu L, Tabakoff B, Hoffman PL.
    Journal: Adv Alcohol Subst Abuse; 1988; 7(3-4):231-4. PubMed ID: 3223431.
    Abstract:
    Recent studies have demonstrated the presence of immunoreactive oxytocin (OT) and vasopressin (VP), OT and VP receptors and physiological functions for these two hormones in a variety of peripheral tissues, including anterior pituitary gland. The objectives of this study were to determine if (i) OT and VP genes are expressed in rat testis and anterior pituitary gland and (ii) if osmotic stimulation known to modify the regulation of OT and VP genes in hypothalamus, would modify the expression of these genes in rat testis and anterior pituitary gland. Using oligonucleotide probes (courtesy of Drs. M. Brownstein and W. Scott Young, NIMH) corresponding to the VP gene or OT gene and specific fractions of human OT and VP genes (courtesy of Dr. J. Battey, NCI) subcloned in the pGEM-3 riboprobe system, and Northern blot and slot blot techniques, OT and VP mRNAs were found in rat testis and anterior pituitary gland. When adult male rats (SD) were either deprived of drinking water or offered 2% salt solution as a sole source of drinking fluid for 72 hrs, both OT and VP mRNA levels were increased in hypothalamus, anterior pituitary gland and testis. Our data suggest that testis and anterior pituitary gland could also be sites of synthesis of OT and VP and that the same stimulus may regulate these genes in various tissues.
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