Interstitial Cajal-like cells in rat mesentery: an ultrastructural and immunohistochemical approach

Journal of Cellular and Molecular Medicine
Mihail E HinescuM-S Faussone-Pellegrini

Abstract

Interstitial Cajal-like Cells (ICLC) were recently recognized in a plethora of non-digestive organs. Here, we describe a cell type of rat mesentery sharing ultrastructural and immunohistochemical features with ICLC. Mesenteric ICLC were demonstrated by transmission electron microscopy (TEM) and further tested by light microscope immunohistochemistry. The cell described here fulfils the TEM diagnostic criteria accepted for ICLC: location in the connective interstitium; close vicinity to nerves, capillaries and other interstitial cells; characteristic long, moniliform cell processes; specialized cell-to-cell junctions; caveolae; mitochondria at 5-10% of cytoplasmic volume; rough endoplasmic reticulum at about 1-2%; intermediate and thin filaments, microtubules; undetectable thick filaments. The processes of this mesenteric ICLC were particularly long, with a mean length of 24.91 microm (10.27-50.83 micorm), and a convolution index of 2.32 (1.37-3.63) was calculated in order to measure their potential length. Mean distances versus main target cells of ICLC-nerve bundles, vessels, adipocytes and macrophages-were 110.69, 115.80, 205.07 and 34.65 nm, respectively. We also tested the expression of CD117/c-kit, CD34, vimentin, alpha-sm...Continue Reading

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Citations

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Methods Mentioned

BETA
electron microscopy
transmission electron microscopy
electron
light microscopy

Software Mentioned

EGISTs
GIST
iTEM SIS

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