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  • Title: Chemical coding of neurons projecting to pelvic viscera in the male guinea pig: a study by retrograde transport and immunohistochemistry.
    Author: Dhami D, Mitchell BS.
    Journal: Histochem J; 1994 Mar; 26(3):262-70. PubMed ID: 7911461.
    Abstract:
    Retrograde transport studies using Fast Blue dye demonstrated that the ductus deferens, seminal vesicle, prostate and rectum, but not the urinary bladder of the male guinea pig are at least in part innervated by the anterior major pelvic ganglion. In the ductus deferens, seminal vesicle and prostate innervation is derived from ipsilateral and contralateral ganglia. In addition to retrograde studies, dye-filled neurons were analysed immunohistochemically for neuronal markers and associations with specifically identified neuronal projections. Neurons of the ganglion projecting to the ductus deferens either contained tyrosine hydroxylase alone, tyrosine hydroxylase and neuropeptide Y, neuropeptide Y alone, neuropeptide Y and vasoactive intestinal peptide, or vasoactive intestinal peptide alone. These neurons were associated with three classes of neuronal projections, substance P-, leucine-enkephalin-, and methionine-enkephalin-immunoreactive. Neurons projecting to the seminal vesicles were similar to the neurons supplying the ductus deferens, except none of the seminal vesicle-specific neurons exhibited vasoactive intestinal peptide immunoreactivity. Neurons supplying the prostate were immunoreactive for either tyrosine hydroxylase or neuropeptide Y; these neurons were infrequently associated with the three classes of varicose neuronal projections. Neurons projecting to the rectum contained neuropeptide Y and were only associated with methionine-enkephalin immunoreactive neuronal projections in one animal.
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