PMID: 7023618Sep 1, 1981Paper

The fetal development of the luteinizing hormone-releasing hormone (LHRH) neuronal systems of the guinea pig brain

Brain Research Bulletin
M Schwanzel-FukudaA J Silverman

Abstract

We have studied the distribution of LHRH-like immunoreactive material in fetal guinea pig brains beginning at day 25 of gestation. Cells and processes were first detected throughout the peripheral, intracranial and central course of the nervus terminalis at 28 (but not 25) days of gestation. The localization of LHRH in this structure preceded its appearance in the hypothalamus and coincided with the initial detection of immunoreactive LH in the pituitary gland. The possible role of the LHRH neuronal network within the nervus terminals in the development of reproductive function is discussed. Comparisons between the brains of littermates of both sexes were made at each age (days 28 through 60 of gestation) to determine possible differences between the sexes in the development of the LHRH neurosecretory systems. No sexually dimorphic features were evident in these systems throughout the prenatal period except at days 40 and 45. At these ages, differences in the number of LHRH neurons in the arcuate nucleus were found between the sexes in some but not all of the brains examined. These differences in LHRH concentrations may reflect the onset of testicular activity as indicated by an increase in serum testosterone levels. Increased ...Continue Reading

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Citations

Jan 1, 1983·Psychoneuroendocrinology·B MessG Sétáló
Jan 1, 1984·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·S DaikokuS Hisano
Oct 1, 1991·The Journal of Steroid Biochemistry and Molecular Biology·M Schwanzel-Fukuda, D W Pfaff
Oct 13, 2006·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·Holger Jastrow, Helmut Hermann August Oelschläger
Jan 23, 1999·Microscopy Research and Technique·M Schwanzel-Fukuda
Mar 31, 1998·The Journal of Comparative Neurology·S Daikoku, I Koide
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Jan 1, 1985·American Journal of Primatology·Joan W Witkin
May 26, 1999·Nihon Ika Daigaku zasshi·S Daikoku
Jun 1, 1990·General and Comparative Endocrinology·R KelsallN M Sherwood

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