Reference : Immunocytochemical localization of vasoactive intestinal peptide (VIP) and neuropepti...
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/6838
Immunocytochemical localization of vasoactive intestinal peptide (VIP) and neuropeptide Y (NPY) in the bovine ovary
English
Hulshof, S. C. J. [University of Utrecht - Utrecht - The Netherlands > Functional Morphology > > >]
Dijkstra, G. [University of Utrecht - Utrecht - The Netherlands > Functional Morphology > > >]
Van der Beek, E. M. [University of Utrecht - Utrecht -The Netherlands > Cell Biology of the Medical Faculty > > >]
Bevers, M. M. [University of Utrecht - Utrecht - The Netherlands > Herd Health and Reproduction > > >]
Figueiredo, José Ricardo [Université de Liège - ULiège > Faculté de Médecine Vétérinaire > IRSIA research unit > >]
Beckers, Jean-François mailto [Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction >]
Van den Hurk, R. [University of Utrecht - Utrecht - The Netherlands > Functional Morphology > > >]
Mar-1994
Biology of Reproduction
Society for the Study of Reproduction
50
3
553-560
Yes (verified by ORBi)
International
0006-3363
1529-7268
Madison
WI
[en] The distribution of the neuropeptides vasoactive intestinal peptide (VIP) and neuropeptide Y (NPY) was studied immunocytochemically in bovine ovaries from 3 mo of gestation up to and including puberty, and from adult cows at three stages of the estrous cycle. The appearance of VIP and NPY immunoreactivity of 4.5-6 mo of gestation coincided with the onset of follicular development. In contrast to NPY, VIP was first found in the cortex. Both VIP and NPY immunoreactivity increased with age. From 9 mo of gestation onwards, VIP and NPY were found around blood vessels and non-vascular smooth muscle cells, in the stroma near preantral follicles, and in the theca externa of antral follicles. In addition, VIP-positive cells were observed exclusively in the granulosa layer of the preovulatory follicle at the time of the LH surge. The distribution of VIP- and NPY-immunoreactive fibers in the ovary may point to an effect of these neuropeptides on various physiological processes, including follicle development and ovarian blood flow. In addition, the presence of VIP-positive cells in the granulosa layer of the preovulatory follicle is indicative of a role for VIP in ovulation.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/6838
10.1095/biolreprod50.3.553

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