title: Distribution of enteroglucagon- and polypeptide YY-immunoreactive cells in the gastrointestinal tract of the white-belly opossum (Didelphis albiventris).
abstract: Several segments of the gastrointestinal tract of the white-belly opossum Didelphis albiventris were investigated immunocytochemically for the occurrence of polypeptide YY (PYY) and enteroglucagon (GLU). PYY- and GLU-immunoreactive cells were observed in the lower part of the ileum, cecum and colon. These cells were seen to emit cytoplasmic basal processes to the neighbouring cells with a number of them reaching the glandular lumen via apical cytoplasmic process. GLU-immunoreactive cells were also present in the oxyntic mucosae and in the pancreatic duct. Staining of consecutive sections for the two polypeptides, respectively, revealed the coexistence of immunoreactivity for PYY and GLU in the same cell type.
authors.affiliation: Department of Pathology, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil.
authors.forename: A J
authors.initials: AJ
authors.lastname: Barbosa
authors.forename: J C
authors.initials: JC
authors.lastname: Nogueira
authors.forename: F J
authors.initials: FJ
authors.lastname: Penna
authors.forename: J M
authors.initials: JM
authors.lastname: Polak
mesh_terms: D000818:Animals; D004064:Digestive System / Q000032:analysis* / Q000166:cytology / Q000378:metabolism; D004386:Duodenum / Q000032:analysis; D005260:Female; D005768:Gastrointestinal Hormones / Q000032:analysis*; D004763:Glucagon-Like Peptides / Q000032:analysis*; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D007420:Intestine, Large / Q000032:analysis; D007421:Intestine, Small / Q000032:analysis; D008297:Male; D009893:Opossums / Q000033:anatomy & histology / Q000378:metabolism*; D010183:Pancreatic Ducts / Q000032:analysis; D019894:Peptide YY; D010455:Peptides / Q000032:analysis*; D013270:Stomach / Q000032:analysis; D014018:Tissue Distribution
chemical_list: D005768:Gastrointestinal Hormones; D010455:Peptides; D019894:Peptide YY; D004763:Glucagon-Like Peptides