These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Electron-microscopic and morphometric study of vesiculation in the epithelial cell layer of the toad urinary bladder. Effect of antidiuretic hormone.
    Author: Davis WL, Jones RG, Ciumei J, Knight JP, Goodman DB.
    Journal: Cell Tissue Res; 1982; 225(3):619-31. PubMed ID: 6812956.
    Abstract:
    Basolateral vesicles are apparent in mitochondria-rich, granular and basal cells of the epithelium of unstimulated toad urinary bladder. Such vesicles are smooth-walled rather than coated. Because of the number of these vesicles, we decided to investigate the effect of arginine vasopressin (AVP) on this vesicle population during the hydroosmotic response. Both glutaraldehyde and glutaraldehyde-osmium tetroxide fixation procedures, as well as electron-microscopic morphometric techniques were utilized. Fifteen min after the administration of AVP in the presence of an osmotic gradient, the intracellular area occupied by basolateral vesicles was increased approximately threefold when compared to unstimulated control hemibladders (0.92 +/- 0.15% vs: 2.67 +/- 0.39%). The intracellular nature of the majority of these vesicles was confirmed by experiments utilizing lanthanum as an electron-dense tracer. It is hypothesized that this vesicular activity may be involved in water movement across the tissue after hormone treatment.
    [Abstract] [Full Text] [Related] [New Search]