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Non-invasive messenger RNA transcriptional evaluation in human kidney allograft dysfunction
Joelsons, G; Domenico, T; Gonçalves, LF; Manfro, RC.
  • Joelsons, G; Universidade Federal do Rio Grande do Sul. Programa de Pós-Graduação em Medicina: Ciências Médicas. Faculdade de Medicina. Porto Alegre. BR
  • Domenico, T; Universidade Federal do Rio Grande do Sul. Programa de Pós-Graduação em Medicina: Ciências Médicas. Faculdade de Medicina. Porto Alegre. BR
  • Gonçalves, LF; Universidade Federal do Rio Grande do Sul. Programa de Pós-Graduação em Medicina: Ciências Médicas. Faculdade de Medicina. Porto Alegre. BR
  • Manfro, RC; Universidade Federal do Rio Grande do Sul. Programa de Pós-Graduação em Medicina: Ciências Médicas. Faculdade de Medicina. Porto Alegre. BR
Braz. j. med. biol. res ; 51(7): e6904, 2018. tab, graf
Article in English | LILACS | ID: biblio-889123
ABSTRACT
The aim of the present study was to evaluate messenger RNA expression in kidney allograft recipients. Forty-four kidney transplant recipients were evaluated up to three months after grafting. After transplantation, peripheral blood samples were drawn sequentially for real-time polymerase chain reaction analyses of perforin and TIM-3 genes. Biopsies were obtained to evaluate acute graft dysfunction and interpreted according to the Banff classification. Eight patients presented episodes of acute rejection. Recipients with rejection had significantly higher levels of TIM-3 mRNA transcripts compared to those without rejection (median gene expression 191.2 and 36.9 mRNA relative units, respectively; P<0.0001). Also, perforin gene expression was higher in patients with rejection (median gene expression 362.0 and 52.8 mRNA relative units; P<0.001). Receiver operating characteristic curves showed that the area under the curve (AUC) for the TIM-3 gene was 0.749 (95%CI 0.670-0.827). Perforin gene mRNA expression provided an AUC of 0.699 (95%CI 0.599 to 0.799). Overall accuracy of gene expression was 67.9% for the TIM-3 gene and 63.6% for the perforin gene. Combined accuracy was 76.8%. Negative predictive values were 95.3% for the TIM-3 gene, 95.5% for the perforin gene, and 95.4% in the combined analyses. Gene expression was significantly modulated by rejection treatment decreasing 64.1% (TIM-3) and 90.9% (perforin) compared to the median of pre-rejection samples. In conclusion, the longitudinal approach showed that gene profiling evaluation might be useful in ruling out the diagnosis of acute rejection and perhaps evaluating the efficacy of treatment.
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Full text: Available Index: LILACS (Americas) Main subject: Kidney Transplantation / Perforin / Hepatitis A Virus Cellular Receptor 2 / Graft Rejection Type of study: Diagnostic study / Prognostic study Limits: Adult / Female / Humans / Male Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR

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Full text: Available Index: LILACS (Americas) Main subject: Kidney Transplantation / Perforin / Hepatitis A Virus Cellular Receptor 2 / Graft Rejection Type of study: Diagnostic study / Prognostic study Limits: Adult / Female / Humans / Male Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR