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  • Title: Regulation of gonadotropin secretion and puberty onset by neuromedin U.
    Author: Fukue Y, Sato T, Teranishi H, Hanada R, Takahashi T, Nakashima Y, Kojima M.
    Journal: FEBS Lett; 2006 Jun 12; 580(14):3485-8. PubMed ID: 16716306.
    Abstract:
    Neuromedin U (NMU), an anorexigenic peptide, was originally isolated from porcine spinal cord in 1985. As NMU is abundant in the anterior pituitary gland, we investigated the effects of NMU on gonadotropin secretion. Both NMU and its receptors, NMUR1 and NMUR2, were expressed in the pituitary gland. NMU suppressed LH and FSH releases from rat anterior pituitary cells. Moreover, NMU-deficient mice exhibit an early onset of vaginal opening. The LHbeta/FSHbeta ratio, which is an index of puberty onset, is high in young NMU-deficient mice. These results indicate that NMU suppresses gonadotropin secretion and regulates the onset of puberty.
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