%0 Journal Article
%T Distribution and chemical coding pattern of the cocaine- and amphetamine-regulated transcript (CART) immunoreactivity in the preoptic area of the pig
%A Krystyna Bogus-Nowakowska
%A Anna Robak
%A Maciej R¨®wniak
%A Barbara Wasilewska
%J Folia Histochemica et Cytobiologica
%D 2012
%I Polish Histochemical and Cytochemical Society
%R 10.5603/14719
%X This study provides a detailed description of cocaine-and amphetamine-regulated transcript (CART) distribution and the co-localization pattern of CART and gonadotropin releasing hormone (GnRH), somatostatin (SOM), neuropeptide Y (NPY), cholecystokinin (CCK), and substance P (SP) in the preoptic area (POA) of the domestic pig. The POA displays a low density of immunoreactive cells and rich immunoreactivity for CART in fibers. CART-immunoreactive (CART-IR) cell bodies were single and faintly stained, and located in the medial preoptic area (MPA) and the periventricular region of the POA. A high density of immunoreactive fibers was observed in the periventricular preoptic nucleus (PPN); a high to moderate density of fibers was observed in the MPA; but in the dorso-medial region of the MPA the highest density of fibers in the whole POA was observed. The lateral preoptic area (LPA) exhibited a less dense concentration of CART-immunoreactive fibers than the MPA. The median preoptic nucleus (MPN) showed moderate to low expression of staining fibers. In the present study, dual-labeling immunohistochemistry was used to show that CART-IR cell bodies do not contain any GnRH and SP. CART-positive fibers were identified in close apposition with GnRH neurons. This suggests that CART may influence GnRH secretion. Double staining revealed that CART-IR structures do not co-express any of the substances we studied, but a very small population of CART-IR fibers also contain SOM, CCK or SP. (Folia Histochemica et Cytobiologica 2011; Vol. 49, No. 4, pp. 604¨C614)
%K cocaine- and amphetamine-regulated transcript
%K gonadotropin releasing hormone
%K somatostatin
%K neuropeptide Y
%K cholecystokinin
%K substance P
%K preoptic area
%K pig
%U http://czasopisma.viamedica.pl/fhc/article/view/14719