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  • Title: Peptidergic innervation and endocrine cells in the human liver.
    Author: el-Salhy M, Stenling R, Grimelius L.
    Journal: Scand J Gastroenterol; 1993 Sep; 28(9):809-15. PubMed ID: 7694356.
    Abstract:
    Histologically normal liver biopsy specimens from patients with Hodgkin's lymphoma were investigated with three immunohistochemical methods for the occurrence of peptidergic nerve fibers and endocrine cells. Numerous immunoreactive nerve fibers were seen with antisera against peripheral nerves markers (neuron-specific enolase, neurofilament protein, and S-100). These nerve fibers were localized in the tunica media of branches of both the hepatic artery and portal vein, around the bile ducts, and in the connective tissue of the interlobular septa. In the liver, 10 types of peptidergic nerve fibers were detected: glucagon-, glucagon-like peptide- (GLP), somatostatin-, neuropeptide Y- (NPY), vasoactive intestinal polypeptide-, neurotensin-, gastrin/cholecystokinin C-terminus-, substance P-, serotonin-, and galanin-immunoreactive nerve fibers. GLP-, somatostatin-, NPY-, neurotensin-, substance P-, and galanin-immunoreactive nerve fibers were abundant; the other nerve fibers were scarce. The nerve fibers showed two distinct patterns of distribution: they occurred in the blood vessel wall and in connective tissue of the interlobular septum. Pancreatic polypeptide- and NPY-immunoreactive cells were found among the lining epithelial cells of the bile ducts in the interlobular septum.
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