BACKGROUND: Polyomavirus-associated nephropathy (PVAN) is one of the most common viral disease affecting renal allograft, with BK being the most frequent causal agent and JCV being considered responsible in <3% of the cases. OBJECTIVES: To quantify polyomaviruses BK and JC load by real-time TaqMan PCR in tissue specimens (renal and ureteral) from kidney transplant recipients. STUDY DESIGN AND METHODS: One-hundred-thirty-eight specimens (125 kidneys, 13 ureters) obtained from 109 patients were evaluated by quantitative real-time PCR for the detection of BKV- and JCV-DNA. Demographic, virological, and histopathological data were collected. RESULTS: BKV-DNA was positive in 32 of 109 patients (29.6%) and JCV-DNA in 20 of 109 patients (18.3%). The highest BK viral loads (>10(4) genome equivalents/cell) were found in two renal samples with histopathologically confirmed PVAN; while JC viral load was >10(4) genome equivalents/cell in one ureteral sample. CONCLUSIONS: Although quantitation of viral DNA on renal allograft biopsies could be complementary to histopathological evaluation and the highest viral load are detectable in renal specimens with PVAN, the identification of a diagnostic cut-off should require further studies.
BACKGROUND:Polyomavirus-associated nephropathy (PVAN) is one of the most common viral disease affecting renal allograft, with BK being the most frequent causal agent and JCV being considered responsible in <3% of the cases. OBJECTIVES: To quantify polyomaviruses BK and JC load by real-time TaqMan PCR in tissue specimens (renal and ureteral) from kidney transplant recipients. STUDY DESIGN AND METHODS: One-hundred-thirty-eight specimens (125 kidneys, 13 ureters) obtained from 109 patients were evaluated by quantitative real-time PCR for the detection of BKV- and JCV-DNA. Demographic, virological, and histopathological data were collected. RESULTS: BKV-DNA was positive in 32 of 109 patients (29.6%) and JCV-DNA in 20 of 109 patients (18.3%). The highest BK viral loads (>10(4) genome equivalents/cell) were found in two renal samples with histopathologically confirmed PVAN; while JC viral load was >10(4) genome equivalents/cell in one ureteral sample. CONCLUSIONS: Although quantitation of viral DNA on renal allograft biopsies could be complementary to histopathological evaluation and the highest viral load are detectable in renal specimens with PVAN, the identification of a diagnostic cut-off should require further studies.
Authors: Valeria Pietropaolo; Anna Bellizzi; Elena Anzivino; Marco Iannetta; Maria Antonella Zingaropoli; Donatella Maria Rodio; Manuela Morreale; Simona Pontecorvo; Ada Francia; Vincenzo Vullo; Anna Teresa Palamara; Maria Rosa Ciardi Journal: J Neurovirol Date: 2015-05-01 Impact factor: 2.643
Authors: Jianhua Hu; Siying Li; Meifang Yang; Lichen Xu; Xuan Zhang; Hong Zhao; Huihui Dong; Yaping Huang; Jun Fan; Lanjuan Li Journal: J Int Med Res Date: 2017-03-07 Impact factor: 1.671
Authors: Eva Girmanova; Irena Brabcova; Jiri Klema; Petra Hribova; Mariana Wohlfartova; Jelena Skibova; Ondrej Viklicky Journal: Clin Dev Immunol Date: 2012-12-05