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M9640771.TXT
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1996-03-04
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Document 0771
DOCN M9640771
TI [Carbohydrate receptors for Mycoplasma fermentans adhesion on human
epithelial tissues]
DT 9604
AU Skrypal' IH; Tokovenko IP; Malynovs'ka LP
SO Mikrobiol Z. 1995 Jul-Aug;57(4):17-22. Unique Identifier : AIDSLINE
MED/96099077
AB It has been stated that two terminal carbohydrates from polysaccharide
complexes which are on the surface of human epithelial tissues, namely,
alpha-D-glucose and N-acetylneuramino acid bound with subterminal
galactose via alpha 2-->3-bond (NeuAc alpha 2-->3 Gal), may serve
receptors for Mycoplasma fermentans adhesion on human epithelial cells.
M. fermentans shows high selectivity to these receptors, though very low
affinity. The latter, probably, explains why this mycoplasma is able to
infect only the limited number of peoples. In the authors' opinion
people with the lower content of glucose in urine, as well as those who
suffer from diseases associated with hypothalamo-hypophyseal
insufficiency are subjected to infection with M. fermentans. People with
normal (3.33-5.55 mM) and elevated alpha-D-glucose content in blood and
in urine are not susceptible to this mycoplasma. Results of the research
carried have shown that alpha-D-glucose solutions of definite
concentration may be used to eliminate M. fermentans from the urogenital
tract of people who have it. The ability of M. fermentans to
discriminate terminal structure of NeuAc alpha 2-->3 Gal provides it
with the possibility to adhere human immunodeficiency virus virions on
its cells as glycoprotein (gp120) of that virus has among its own
oligosaccharides certain glycopolymers of the similar terminal
structure. Then M. fermentans transports the virions directly to target
cells for this virus. The target cells express receptor CD4 glycolized
by oligosaccharides of the mentioned terminal structure. It provides
adhesion of the mycoplasma on the receptor.
DE Bacterial Adhesion/*PHYSIOLOGY English Abstract
Epithelium/METABOLISM/MICROBIOLOGY Hemagglutination Tests Human
HIV-1/METABOLISM Mycoplasma fermentans/METABOLISM/*PATHOGENICITY
Oligosaccharides/METABOLISM Polysaccharides, Bacterial/*METABOLISM
Receptors, Immunologic/*METABOLISM Receptors, Virus/METABOLISM
Urogenital System/*METABOLISM/MICROBIOLOGY Virion/METABOLISM JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).