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Histamine and chondroitin sulfate E proteoglycan released by cultured human colonic mucosa: indication for possible presence of E mast cells

Journal Article · · Proc. Natl. Acad. Sci. U.S.A.; (United States)
; ; ; ; ;
An association between the release of histamine and chondroitin sulfate E proteoglycan (PG) was demonstrates in human colonic mucosa (HCM). Colonic biopsy samples incorporated (/sup 35/S)sulfate into PG, which was partially released into the culture medium during the incubation period. Ascending thin-layer chromatography of the released /sup 35/S-labeled PG after its digestion by chondroitin ABC lyase (chondroitinase, EC 4.2.2.4) followed by autoradiography yielded three products that migrated in the position of monosulfated disaccharides of N-acetylgalactosamine 4-sulfate and N-acetylgalactosoamine 6-sulfate and of an oversulfated disaccharide possessing N-acetylgalatosamine 4,6-disulfate. Cultured colonic mucosa released 23.6 +/- 3.7ng of histamine per mg of wet tissue without any special trigger. Comparison by linear regression analysis of the release of histamine and chondroitin (/sup 35/S)sulfate E PG revealed a correlation coefficient (r) of 0.7. Histological examination of the colonic biopsies revealed the presence of many mast cells in various degrees of degranulation in the mucosa and submucosa. The above correlation, the observation that most of the mast cells showed various degrees of degranulation, and the lack of heparin synthesis as opposed to the synthesis and immunological release of chondroitin sulfate E strongly suggest that the E mast cell exists in the human colon.
Research Organization:
Hadassah Univ. Hospital, Jerusalem, Israel
OSTI ID:
6468636
Journal Information:
Proc. Natl. Acad. Sci. U.S.A.; (United States), Journal Name: Proc. Natl. Acad. Sci. U.S.A.; (United States) Vol. 83:2; ISSN PNASA
Country of Publication:
United States
Language:
English

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Related Subjects

551001* -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AMINES
ANIMAL CELLS
AZOLES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARBOHYDRATES
CHONDROITIN
CHROMATOGRAPHY
CONNECTIVE TISSUE CELLS
DAYS LIVING RADIOISOTOPES
DIGESTIVE SYSTEM
EVEN-ODD NUCLEI
GASTROINTESTINAL TRACT
GLUCOPROTEINS
HETEROCYCLIC COMPOUNDS
HISTAMINE
HISTOLOGY
IMIDAZOLES
INTESTINES
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MAST CELLS
MEMBRANES
MUCOPOLYSACCHARIDES
MUCOUS MEMBRANES
NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANS
OXYGEN COMPOUNDS
PATIENTS
PHYSIOLOGY
POLYSACCHARIDES
PROTEINS
RADIOISOTOPES
SACCHARIDES
SECRETION
SEPARATION PROCESSES
SOMATIC CELLS
SULFATES
SULFUR 35
SULFUR COMPOUNDS
SULFUR ISOTOPES
THIN-LAYER CHROMATOGRAPHY