Abstract
Signal joint T cell receptor excision circles (sjTRECs) have been reported as a clinical marker to measure the potential for recovery of the immune system after immunosuppressive treatments. The aim of this study was to investigate the thymic regenerative potential in 55 human immunodeficiency virus (HIV)-1 infected (HIV+) and non-infected (HIV-) lymphoma patients, candidates for autologous stem cell transplantation (ASCT). Moreover, the possible associations between sjTRECs and other immunological and clinical parameters were examined. SjTRECs levels in peripheral blood mononuclear cells (PBMCs) were quantified by real-time polymerase chain reaction and T lymphocyte subsets were analysed by flow cytometry. Our data showed that sjTRECs were reduced in lymphoma patients compared to healthy controls, although a weak significant association between low sjTRECs levels and increasing age was maintained [odds ratio (OR) = 4.00; 95% confidence interval (CI) 1.09-17.17]. We found that different chemotherapeutic treatments seem to induce similar effects on the thymic reservoir, independently from their intensity (type and number of cycles of previous chemotherapy). Results from multivariate models including adjustment for patients' sex, type of lymphoma and type of chemotherapy showed that thymic output was independent from HIV infection (OR, 0.95; 95% CI 0.20-4.48). SjTRECs levels correlated with naive T cell subsets in overall lymphoma patients and after stratification by HIV infection (r > 0.37). HIV replication should be maximally suppressed to properly evaluate thymic output by sjTREC markers. Our results suggested that de novo T cell generation is maintained partially in pretreated recurrent lymphoma patients, candidates for ASCT, and could contribute to restore the immune function after transplantation.
| Original language | English |
|---|---|
| Pages (from-to) | 101-109 |
| Number of pages | 9 |
| Journal | Clinical and Experimental Immunology |
| Volume | 151 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2008 |
Fingerprint
Keywords
- Autologous stem cell transplantation
- HIV infection
- Recurrent lymphoma
- TCR excision circles
ASJC Scopus subject areas
- Immunology
Cite this
Recent thymic emigrants in lymphoma patients with and without human immunodeficiency virus infection candidates for autologous peripheral stem cell transplantation. / Pratesi, C.; Simonelli, C.; Zanussi, S.; Talamini, R.; Bortolin, M. T.; Tedeschi, R.; Marus, A.; Caffau, C.; Michieli, M.; Tirelli, U.; De Paoli, P.
In: Clinical and Experimental Immunology, Vol. 151, No. 1, 01.2008, p. 101-109.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Recent thymic emigrants in lymphoma patients with and without human immunodeficiency virus infection candidates for autologous peripheral stem cell transplantation
AU - Pratesi, C.
AU - Simonelli, C.
AU - Zanussi, S.
AU - Talamini, R.
AU - Bortolin, M. T.
AU - Tedeschi, R.
AU - Marus, A.
AU - Caffau, C.
AU - Michieli, M.
AU - Tirelli, U.
AU - De Paoli, P.
PY - 2008/1
Y1 - 2008/1
N2 - Signal joint T cell receptor excision circles (sjTRECs) have been reported as a clinical marker to measure the potential for recovery of the immune system after immunosuppressive treatments. The aim of this study was to investigate the thymic regenerative potential in 55 human immunodeficiency virus (HIV)-1 infected (HIV+) and non-infected (HIV-) lymphoma patients, candidates for autologous stem cell transplantation (ASCT). Moreover, the possible associations between sjTRECs and other immunological and clinical parameters were examined. SjTRECs levels in peripheral blood mononuclear cells (PBMCs) were quantified by real-time polymerase chain reaction and T lymphocyte subsets were analysed by flow cytometry. Our data showed that sjTRECs were reduced in lymphoma patients compared to healthy controls, although a weak significant association between low sjTRECs levels and increasing age was maintained [odds ratio (OR) = 4.00; 95% confidence interval (CI) 1.09-17.17]. We found that different chemotherapeutic treatments seem to induce similar effects on the thymic reservoir, independently from their intensity (type and number of cycles of previous chemotherapy). Results from multivariate models including adjustment for patients' sex, type of lymphoma and type of chemotherapy showed that thymic output was independent from HIV infection (OR, 0.95; 95% CI 0.20-4.48). SjTRECs levels correlated with naive T cell subsets in overall lymphoma patients and after stratification by HIV infection (r > 0.37). HIV replication should be maximally suppressed to properly evaluate thymic output by sjTREC markers. Our results suggested that de novo T cell generation is maintained partially in pretreated recurrent lymphoma patients, candidates for ASCT, and could contribute to restore the immune function after transplantation.
AB - Signal joint T cell receptor excision circles (sjTRECs) have been reported as a clinical marker to measure the potential for recovery of the immune system after immunosuppressive treatments. The aim of this study was to investigate the thymic regenerative potential in 55 human immunodeficiency virus (HIV)-1 infected (HIV+) and non-infected (HIV-) lymphoma patients, candidates for autologous stem cell transplantation (ASCT). Moreover, the possible associations between sjTRECs and other immunological and clinical parameters were examined. SjTRECs levels in peripheral blood mononuclear cells (PBMCs) were quantified by real-time polymerase chain reaction and T lymphocyte subsets were analysed by flow cytometry. Our data showed that sjTRECs were reduced in lymphoma patients compared to healthy controls, although a weak significant association between low sjTRECs levels and increasing age was maintained [odds ratio (OR) = 4.00; 95% confidence interval (CI) 1.09-17.17]. We found that different chemotherapeutic treatments seem to induce similar effects on the thymic reservoir, independently from their intensity (type and number of cycles of previous chemotherapy). Results from multivariate models including adjustment for patients' sex, type of lymphoma and type of chemotherapy showed that thymic output was independent from HIV infection (OR, 0.95; 95% CI 0.20-4.48). SjTRECs levels correlated with naive T cell subsets in overall lymphoma patients and after stratification by HIV infection (r > 0.37). HIV replication should be maximally suppressed to properly evaluate thymic output by sjTREC markers. Our results suggested that de novo T cell generation is maintained partially in pretreated recurrent lymphoma patients, candidates for ASCT, and could contribute to restore the immune function after transplantation.
KW - Autologous stem cell transplantation
KW - HIV infection
KW - Recurrent lymphoma
KW - TCR excision circles
UR - http://www.scopus.com/inward/record.url?scp=36849040080&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36849040080&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2249.2007.03516.x
DO - 10.1111/j.1365-2249.2007.03516.x
M3 - Article
C2 - 17931391
AN - SCOPUS:36849040080
VL - 151
SP - 101
EP - 109
JO - Clinical and Experimental Immunology
JF - Clinical and Experimental Immunology
SN - 0009-9104
IS - 1
ER -