M G Giudizi, R Biagiotti, F Almerigogna, M Mazzetti, A Alessi, G Massai, G Longo, G Scano, M Morfini, S Romagnani
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HTLV-III seropositivity in symptom-free Italian haemophiliacs. Correlation with consumption of commercial concentrate and abnormalities of T and B lymphocytes.
Various immunological parameters exploring both T- and B-cell functions were determined in a group of 74 symptom-free Italian haemophiliacs treated with commercial concentrate imported from the USA and were correlated with the presence in their serum of antibody to HTLV-III. There was a strong correlation between HTLV-III seropositivity and the amount of concentrate consumed. A significant correlation between HTLV-III seropositivity and T-cell alterations, such as T4/T8 ratio less than 1 and reduction in the absolute number of T4+ lymphocytes, or B-cell alterations such as hypergammaglobulinaemia and enhanced spontaneous IgG synthesis in vitro, was also observed.
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