Cellular Immune Responses to Cytomegalovirus in Renal Transplant Recipients
| Autor: | Stanley C. Jordan, Raju Radha, Anna Petrosyan, Dechu Puliyanda, Suphamai Bunnapradist, Nurmamet Amet, Mieko Toyoda |
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| Rok vydání: | 2005 |
| Předmět: |
Adult
CD4-Positive T-Lymphocytes Male Ganciclovir Cellular immunity Time Factors T-Lymphocytes medicine.medical_treatment DNA Mutational Analysis Congenital cytomegalovirus infection Cytomegalovirus Enzyme-Linked Immunosorbent Assay CD8-Positive T-Lymphocytes Immunocompromised Host Immune system medicine Humans Immunology and Allergy Pharmacology (medical) Immunosuppression Therapy Transplantation business.industry virus diseases Middle Aged Flow Cytometry medicine.disease Kidney Transplantation Virology Phosphotransferases (Alcohol Group Acceptor) Cytokine Viral replication Case-Control Studies Cytomegalovirus Infections Immunology Female Peptides business Viral load Immunosuppressive Agents CD8 medicine.drug |
| Zdroj: | American Journal of Transplantation. 5:110-117 |
| ISSN: | 1600-6135 |
| DOI: | 10.1111/j.1600-6143.2003.00647.x |
| Popis: | Control of CMV replication depends primarily on anti-CMV T lymphocyte activity. However, the functional T-cell responses to CMV in immunosuppressed solid organ transplant recipients are not well understood. In this study we employed cytokine flowcytometry (CFC) using pooled CMV peptides and viral lysates to detect CMV-specific T-cell responses in 17 healthy controls, 33 stable renal transplant recipients (Tx recipients) and 6 transplant recipients with active CMV infection (CMV(+)). We found that pooled peptides and lysates provide optimal detection of IFN gamma production in anti-CMV CD8(+) and CD4(+) T cells, respectively. In both healthy controls and Tx recipients, CMV-specific T-cell levels strongly correlated with serostatus. Seropositive Tx recipients have significantly higher levels of CMV-specific CD8(+) T-cell responses compared to healthy controls, which may signify an effort to control enhanced viral replication in immunosuppressed Tx recipients. In some individuals, absence of anti-CMV T-cell response may correlate with lack of viral clearance by ganciclovir therapy, even when CMV isolates are not ganciclovir resistant. Thus, monitoring cellular immunity with CFC along with viral load by PCR merits further exploration for identification of patients at the risk of developing CMV disease, tailoring prophylactic and therapeutic decisions and preventing complications. |
| Databáze: | OpenAIRE |
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