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  • Title: Effect of total or partial uterus extirpation on sympathetic uterus-projecting neurons in porcine inferior mesenteric ganglion. B. Changes in expression of neuropeptide Y, galanin, vasoactive intestinal polypeptide, pituitary adenylate-cyclase activating peptide, somatostatin and substance P.
    Author: Wasowicz K.
    Journal: Pol J Vet Sci; 2003; 6(2):147-60. PubMed ID: 12817785.
    Abstract:
    The expression of neuropeptide Y (NPY), galanin (GAL), vasoactive intestinal polypeptide (VIP), pituitary adenylate cyclase-activating peptide (PACAP), somatostatin (SOM) and substance P (SP) was studied in the neurons of the inferior mesenteric ganglion (IMG) projecting to the uterine horn and uterine cervix after uterus extirpation-induced axotomy in sexually immature gilts. The expression was studied with immunohistochemistry, in situ hybridization and RT-PCR. Uterus-projecting neurons were identified by retrograde tracing with Fast Blue (FB). Immunohistochemistry revealed that FB-positive (FB+) uterus-projecting neurons in control animals contained only immunoreactivities to NPY (ca. 50%) and GAL (single neurons). Uterus extirpation increased the occurrence of NPY and GAL in FB+ neurons. No other studied neuropeptides were found in axotomized uterus-projecting neurons. Hybridization in situ revealed the reduction of NPY expression and induction of GAL expression in FB+ neurons. RT-PCR detected induction of GAL expression in the IMG after uterus extirpation. The expression level of NPY and SOM was significant and was not affected by axotomy. The expression level of PACAP was very low and did not differ between IMG of control, partially and totally hysterectomized animals. No VIP and SP expression was detected in all ganglia. The presented data show clear axotomy-related changes in the expression of GAL and NPY in the uterus-projecting neurons of the porcine IMG.
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