home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
HEALTH
/
MED9602.ZIP
/
M9620726.TXT
< prev
next >
Wrap
Text File
|
1996-02-26
|
3KB
|
42 lines
Document 0726
DOCN M9620726
TI CD4+/CD8+ ratio of liver-derived lymphocytes is related to viraemia and
not to hepatitis C virus genotypes in chronic hepatitis C.
DT 9602
AU Pham BN; Martinot-Peignoux M; Mosnier JF; Njapoum C; Marcellin P; Bougy
F; Degott C; Erlinger S; Cohen JH; Degos F; Service d'Hematologie et
Immunologie, Hopital Beaujon, Clichy,; France.
SO Clin Exp Immunol. 1995 Nov;102(2):320-7. Unique Identifier : AIDSLINE
MED/96069882
AB The pathogenic mechanisms that lead to chronic hepatitis C are unknown.
As hepatitis C virus (HCV) has been shown to induce T cell response, we
assessed whether a particular T lymphocyte subset could be
preferentially detected in the liver of patients with chronic hepatitis
C in relation to viraemia or HCV genotypes. The immunophenotypes of
liver-derived lymphocytes were analysed in 26 patients by flow cytometry
and immunohistochemistry. Viraemia was quantified by branched DNA assay.
Using this assay, HCV RNA was not detectable in six patients. HCV RNA
was detected in 20 patients, and titres ranged from 8 to 137 x 10(6)
Eq/ml. Genotyping was performed using a line probe assay. Type 1a, 1b,
2a, 3a and 4a were found to infect 2, 10, 2, 7 and 3 patients,
respectively. The CD4+/CD8+ ratio of liver-derived lymphocytes was
significantly higher (P < 0.01) in patients with detectable viraemia
than in patients without detectable viraemia. In contrast, neither the
percentage of gamma/delta T lymphocytes nor that of CD2+CD57+ cells was
different in the groups. When comparing the CD4+/CD8+ ratio, the
percentage of gamma/delta T lymphocytes or CD2+CD57+ cells according to
genotype, the differences were not significant. These results suggest
that the CD4+/CD8+ ratio of liver-derived lymphocytes is related to
viraemia but not to HCV genotypes in patients with chronic hepatitis C,
and that T lymphocytes may be involved in the pathogenesis of liver
lesions in chronic hepatitis C.
DE Adult Chronic Disease *CD4-CD8 Ratio Female Hepatitis C/*IMMUNOLOGY
Hepatitis C Antibodies/IMMUNOLOGY Hepatitis C Viruses/IMMUNOLOGY Human
Immunophenotyping Liver/IMMUNOLOGY Male Middle Age RNA, Viral/BLOOD
Support, Non-U.S. Gov't T-Lymphocyte Subsets/*IMMUNOLOGY JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).