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M9620990.TXT
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1996-02-26
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Document 0990
DOCN M9620990
TI Evidence for the aetiological role of blood-borne virus infections in
causing reduced lectin-induced T-cell proliferation in haemophilic boys.
DT 9602
AU Evans JA; Pasi KJ; Hill FG; Department of Haematology, Children's
Hospital, Ladywood,; Birmingham.
SO Br J Haematol. 1995 Sep;91(1):197-202. Unique Identifier : AIDSLINE
MED/96070649
AB T-lymphocyte function, as expressed by polyclonal proliferation to
lectin mitogens phytohaemagglutinin and concanavalin A, has been studied
in a normal control population and three groups of haemophilic boys:
group 1, HIV and HCV seronegative and treated only with a single
heat-treated factor VIII (FVIII) concentrate; group 2, HIV seronegative
but HCV seropositive; group 3, all HIV and HCV seropositive. Groups 2
and 3 have been previously treated with unheated and heated FVIII
concentrate. Group 1 boys (HIV/HCV uninfected) showed no significant
reduction in lymphocyte proliferation when compared with a control
population. Group 2 and 3 boys showed an impaired response to these
mitogens compared to group 1 boys and the control group. There was no
relationship between FVIII concentrate received and proliferative
response. The absence of immune modulation in haemophilic boys who have
not acquired HIV and HCV infection implicates chronic blood-borne virus
infections as the major contributory factors to impaired lymphocyte
proliferative responses seen in haemophiliacs treated with large-pool
concentrates. The presence of virus infections, such as HCV, may account
for similar lymphocyte function abnormalities observed in previously
described cohorts.
DE Adolescence Child Child, Preschool Concanavalin A/IMMUNOLOGY Factor
VIII/THERAPEUTIC USE Follow-Up Studies Hemophilia/DRUG
THERAPY/*IMMUNOLOGY Hepatitis C/*IMMUNOLOGY Human HIV
Seropositivity/*IMMUNOLOGY *Immune Tolerance Lymphocyte Transformation
Male Phytohemagglutinins/IMMUNOLOGY Support, Non-U.S. Gov't
T-Lymphocytes/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).