PMID- 21685826 OWN - NLM STAT- MEDLINE DCOM- 20110930 LR - 20110727 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 92 IP - 3 DP - 2011 Aug 15 TI - Epstein-barr virus gene expression, human leukocyte antigen alleles and chronic high viral loads in pediatric renal transplant patients. PG - 328-33 LID - 10.1097/TP.0b013e3182247bf2 [doi] AB - BACKGROUND: Studies have identified solid organ transplant recipients who remain asymptomatic despite maintaining chronic high Epstein-Barr virus (EBV) viral loads. We examined clinical manifestations, EBV gene expression, human leukocyte antigen (HLA) alleles, and specific T-cell responses to EBV infection in pediatric renal transplant patients. METHODS: Seventeen pediatric renal transplant patients were categorized according to EBV viral load into those with chronic high viral loads (CHL) and recipients who resolve EBV infection (REI). EBV gene expression was analyzed using real-time PCR assays and EBV-specific T cells were analyzed by flow cytometry. RESULTS: EBV gene, EBV-encoded small RNA 1, was expressed at significantly higher levels in CHL compared with EBV seropositive controls (P=0.005) and raised compared with REI. BamHI A right-ward transcripts were also expressed at higher levels in CHL patients (P=0.03) than in REI. Expression of latent genes, EBNA1, LMP1, LMP2, and lytic gene BZLF1 were restricted to the CHL group with viral gene expression varying over time. HLA-A*02 allele expression was predominant in CHL patients (80%) and GLC lytic-specific cytotoxic T-lymphocytes were absent. In contrast, HLA-B*08 allele expression was prevalent in REI patients (71%) and RAK lytic cytotoxic T-lymphocytes were detected in all patients. CONCLUSION: EBV gene expression in CHL carriers differs from those that resolve infection and should be interpreted alongside HLA polymorphisms. FAU - Moran, Julie AU - Moran J AD - Centre for Research in Infectious Diseases, School of Medicine and Medical Science, University College Dublin, Belfield, Dublin, Ireland. FAU - Carr, Michael AU - Carr M FAU - Waters, Allison AU - Waters A FAU - Boyle, Sheila AU - Boyle S FAU - Riordan, Michael AU - Riordan M FAU - Connell, Jeff AU - Connell J FAU - Awan, Atif AU - Awan A FAU - Hall, William AU - Hall W FAU - Hassan, Jaythoon AU - Hassan J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (HLA Antigens) RN - 0 (RNA, Viral) SB - IM MH - Adolescent MH - CD8-Positive T-Lymphocytes/immunology/virology MH - Child MH - Child, Preschool MH - Chronic Disease MH - Epstein-Barr Virus Infections/*genetics/*immunology MH - Female MH - Gene Expression Profiling MH - Gene Expression Regulation, Viral MH - HLA Antigens/*genetics/immunology MH - Herpesvirus 4, Human/*genetics MH - Humans MH - Infant MH - *Kidney Transplantation MH - Male MH - Postoperative Complications/genetics/immunology/virology MH - RNA, Viral/genetics MH - Recurrence MH - Reverse Transcriptase Polymerase Chain Reaction MH - Viral Load/*genetics/immunology EDAT- 2011/06/21 06:00 MHDA- 2011/10/01 06:00 CRDT- 2011/06/21 06:00 PHST- 2011/06/21 06:00 [entrez] PHST- 2011/06/21 06:00 [pubmed] PHST- 2011/10/01 06:00 [medline] AID - 10.1097/TP.0b013e3182247bf2 [doi] PST - ppublish SO - Transplantation. 2011 Aug 15;92(3):328-33. doi: 10.1097/TP.0b013e3182247bf2.