Immunoregulatory mechanisms in chronic HBsAg carriers have been investigated through the study of in vitro proliferative responses to HBsAg by allogeneic coculture experiments between T lymphocytes from HBsAg+ chronic active hepatitis (CAH) patients (HBsAg no responder) and PBMC from subjects boosted with anti-hepatitis B vaccine (high responder). When high-responder PBMC have been challenged with the hepatitis B surface antigen (HBsAg) in the presence of HBsAg no-responder T lymphocytes, HBsAg no-responder T lymphocytes caused an antigen specific, dose-dependent, suppression of the responsiveness of high-responder PBMC. On the other hand, T cells from patients with autoimmune CAH did not exert any suppressor effect in our system. The suppressor T lymphocytes were mitomycin C resistant and were positive for OKT8, but were negative for OKT4. When T8+ cells were depleted from HBsAg no-responder PBMC, the in vitro immunoproliferative response to HBsAg in chronically HBV infected patients was markedly improved. Our data clearly demonstrate the existence of T8+ suppressor T lymphocytes that can control low responsiveness to HBsAg in chronic HBV patients.

Antigen specific suppressor T cells from chronic hepatitis B virus (HBV) carriers inhibit the responsiveness to HBsAg of allogeneic high-responder lymphocytes / Barnaba, Vincenzo; Levrero, Massimo; A., Franco; C., Zaccari; A., Musca; F., Balsano. - In: JOURNAL OF CLINICAL & LABORATORY IMMUNOLOGY. - ISSN 0141-2760. - 16:3(1985), pp. 137-142.

Antigen specific suppressor T cells from chronic hepatitis B virus (HBV) carriers inhibit the responsiveness to HBsAg of allogeneic high-responder lymphocytes

BARNABA, Vincenzo;LEVRERO, Massimo;
1985

Abstract

Immunoregulatory mechanisms in chronic HBsAg carriers have been investigated through the study of in vitro proliferative responses to HBsAg by allogeneic coculture experiments between T lymphocytes from HBsAg+ chronic active hepatitis (CAH) patients (HBsAg no responder) and PBMC from subjects boosted with anti-hepatitis B vaccine (high responder). When high-responder PBMC have been challenged with the hepatitis B surface antigen (HBsAg) in the presence of HBsAg no-responder T lymphocytes, HBsAg no-responder T lymphocytes caused an antigen specific, dose-dependent, suppression of the responsiveness of high-responder PBMC. On the other hand, T cells from patients with autoimmune CAH did not exert any suppressor effect in our system. The suppressor T lymphocytes were mitomycin C resistant and were positive for OKT8, but were negative for OKT4. When T8+ cells were depleted from HBsAg no-responder PBMC, the in vitro immunoproliferative response to HBsAg in chronically HBV infected patients was markedly improved. Our data clearly demonstrate the existence of T8+ suppressor T lymphocytes that can control low responsiveness to HBsAg in chronic HBV patients.
1985
01 Pubblicazione su rivista::01a Articolo in rivista
Antigen specific suppressor T cells from chronic hepatitis B virus (HBV) carriers inhibit the responsiveness to HBsAg of allogeneic high-responder lymphocytes / Barnaba, Vincenzo; Levrero, Massimo; A., Franco; C., Zaccari; A., Musca; F., Balsano. - In: JOURNAL OF CLINICAL & LABORATORY IMMUNOLOGY. - ISSN 0141-2760. - 16:3(1985), pp. 137-142.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/438615
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