title: [Immunocytochemical localization of vasopressin at its absorption by cells of rat small intestine].
abstract: Morpho-physiological characteristics of the transport of cyclic nonapeptide arginine vasopressin (AVP) across the rat intestinal epithelium was studied in experiments in vitro. A partial absorption of physiologically active AVP was followed when filling the isolated intestinal lumen by hormone solution. By methods of immunoelectron and immunofluorescence confocal microscopy, using polyclonal anti-AVP antibodies, cytoplasmic localization of AVP label was shown in enterocytes. The AVP label was also observed in the intercellular space in the basal area of epithelium. No label was revealed in the intercellular junctions, and no predominant label accumulation was found in any cytoplasmic structures of the epithelial cells. The obtained results are considered as evidence for the transcellular pathway of partial AVP absorption in rat small intestine.
authors.forename: E V
authors.initials: EV
authors.lastname: Selivestrova
authors.forename: E I
authors.initials: EI
authors.lastname: Shakhmatova
authors.forename: Ia Iu
authors.initials: IaIu
authors.lastname: Komissarchik
authors.forename: N P
authors.initials: NP
authors.lastname: Prutskova
authors.forename: E S
authors.initials: ES
authors.lastname: Snigirevskaia
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Natochin
mesh_terms: D000818:Animals; D001127:Arginine Vasopressin / Q000378:metabolism*; D001692:Biological Transport; D003593:Cytoplasm / Q000378:metabolism; D020895:Enterocytes / Q000378:metabolism; D005110:Extracellular Space / Q000378:metabolism; D007150:Immunohistochemistry; D066298:In Vitro Techniques; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism*; D007421:Intestine, Small / Q000378:metabolism*; D018613:Microscopy, Confocal; D016253:Microscopy, Immunoelectron; D051381:Rats; D017208:Rats, Wistar
chemical_list: D001127:Arginine Vasopressin