Óxido nítrico e função peritoneal de pacientes em diálise peritoneal

• Ano de defesa: 2004
• Autor(a) principal: Figueiredo, Ana Elizabeth Prado Lima
• Orientador(a): D'Avila, Domingos Otávio Lorenzoni
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: MEDICINA; ÓXIDO NÍTRICO; DIÁLISE PERITONEAL; NEFROLOGIA; NEFROPATIAS
• Link de acesso: http://hdl.handle.net/10923/4543

Objective: The aim of this study was to evaluate serum and dialysate nitric oxide (NO), and endothelial function in peritoneal dialysis patients in different peritoneal equilibration test (PET) categories. Methods: Cross-sectional study, in stable PD patients free of peritonitis for at least one month. Quartiles of the 4-h dialysate/plasma (D/P) ratio creatinine were used to classify the peritoneal membrane transport as low, low average, high average and high. NO metabolites were measured by chemiluminescence (n=41), and endothelial function was evaluated by arterial flow-mediated dilation (n=31). Results: Serum, 4-h and 24-h dialysate NO were not different among the PET categories. The 4-h dialysate/serum NO ratio (D/PNO) was also not different (p=0,096), but the data suggested the presence of a trend, increasing from low toward high peritoneal transport. Additionally, median (interquartile range) flowmediated dilation was not different between groups. There was correlation between 4-h dialysate and serum NO (r=0. 891, p<0. 001). D/PNO was negatively correlated with glucose transport (r=-0. 579, p<0. 001) and ultrafiltration (r=-0. 422, p<0. 001), and positively correlated with the D/P creatinine ratio (r=0. 533, p<0. 001). Conclusion: NO levels appear to reflect peritoneal permeability only. The dialysate NO level is not a sensible marker for local production of NO, in peritonitis-free patients. Peritoneal dialysis prescription is not dependent upon endothelial function.