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  • Title: Immunohistochemical demonstration of the presence and localization of diverse molecular forms of gonadotropin-releasing hormone in the lizard (Podarcis s. sicula) brain.
    Author: Masucci M, D'Aniello B, Iela L, Ciarcia G, Rastogi RK.
    Journal: Gen Comp Endocrinol; 1992 Apr; 86(1):81-9. PubMed ID: 1505732.
    Abstract:
    The immunohistochemical presence and the distribution pattern of four different molecular forms of gonadotropin-releasing hormone (GnRH) were investigated in the brain of both sexes of the lizard, Podarcis s. sicula. Animals used in this study were collected in November and April, representing two different periods of the reproductive cycle. The antisera used were those raised against synthetic mammalian GnRH, chicken GnRH-I and II, and salmon GnRH. Strong immunoreaction was obtained for salmon, chicken-I, and chicken-II GnRHs, whereas a very weak reaction was seen for the mammalian form of GnRH. The distribution of immunoreactive-GnRH perikarya and fibers did not vary with the sex, the reproductive condition of the animals, or the antiserum used. Also, the intensity of immunoreaction with any one antiserum was quite similar in both periods of the year and in all brains examined. The immunoreactive perikarya was seen as two distinct groups, one in the mesencephalon and the other in the infundibulum. Immunoreactive fiber endings were seen in the telencephalon, the optic tectum, the anterior preoptic area, the median eminence, the central grey matter, the rhombencephalon, and the cerebellum. No immunoreactive perikarya were seen in the telencephalon or the anterior preoptic area.
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