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1996-02-27
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Document 0450
DOCN M9630450
TI Glycoforms of serum alpha 1-acid glycoprotein as markers of inflammation
and cancer.
DT 9603
AU Mackiewicz A; Mackiewicz K; Department of Cancer Immunology, University
School of Medical; Sciences, Great Poland Cancer Center, Poznan.
SO Glycoconj J. 1995 Jun;12(3):241-7. Unique Identifier : AIDSLINE
MED/96121946
AB alpha 1-acid glycoprotein (AGP) is a serum acute phase glycoprotein
which possesses five N-linked complex type heteroglycan side chains
which may be present as bi-, tri- and tetraantennary structures.
Depending upon the content of biantennary structure on AGP, up to four
glycoforms of AGP are present in serum. These glycoforms can be easily
estimated in body fluids by means of crossed
affinity-immunoelectrophoresis (CAIE) with the lectin, Concanavalin A
(Con A). Con A selectively binds biantennary structures; the more
biantennary structures on AGP, the stronger the binding. In acute
inflammation, a relative increase of AGP glycoforms with biantennary
units is observed-a type I glycosylation change. In some chronic
inflammatory states there is an relative decrease of AGP glycoforms with
biantennary heteroglycans-a type II glycosylation change. Moreover, in
certain other states such as pregnancy, estrogen administration or liver
damage, type II glycosylation changes are also seen. A detailed analysis
of the clinical applications of the assessment of AGP glycoforms in sera
of patients with rheumatic diseases, AIDS and various types of cancers
is presented. Accumulated data shows that AGP glycoforms may be very
useful in the detection of intercurrent infections in the course of
rheumatoid arthritis, systemic lupus erythematosus, or myeloblastic
leukaemia, and in the detection of secondary infections in human
immunodeficiency virus infected individuals. AGP glycoforms are also
very useful in differentiation between various forms of trophoblastic
disease and are helpful in monitoring the treatment of these patients.
Finally, AGP glycoforms provide valuable information for differentiation
between primary and secondary liver cancer.
DE Acquired Immunodeficiency Syndrome/BLOOD Biological Markers/CHEMISTRY
Human Inflammation/*BLOOD Neoplasm Proteins/*CHEMISTRY/METABOLISM
Neoplasms/BLOOD/CHEMISTRY Orosomucoid/*CHEMISTRY/METABOLISM Rheumatic
Diseases/BLOOD Support, Non-U.S. Gov't Tumor Markers,
Biological/*BLOOD JOURNAL ARTICLE REVIEW REVIEW, TUTORIAL
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).