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The protective arm of the renin-angiotensin system may counteract the intense inflammatory process in fetuses with posterior urethral valves.
Rocha, Natalia P; Bastos, Fernando M; Vieira, Érica L M; Prestes, Thiago R R; Silveira, Katia D da; Teixeira, Mauro M; Simões E Silva, Ana Cristina.
Afiliación
  • Rocha NP; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil.
  • Bastos FM; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais (UFMG), Hospital das Clínicas, Serviço de Medicina Fetal, Belo Horizonte, MG, Brazil.
  • Vieira ÉLM; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil.
  • Prestes TRR; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil.
  • Silveira KDD; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil.
  • Teixeira MM; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais (UFMG), Instituto de Ciências Biológicas, Departamento de Bioquímica e Imunologia, Laboratório de Imunofarm
  • Simões E Silva AC; Universidade Federal de Minas Gerais (UFMG), Faculdade de Medicina, Laboratório Interdisciplinar de Investigação Médica (LIIM), Belo Horizonte, MG, Brazil. Electronic address: acssilva@hotmail.com.
J Pediatr (Rio J) ; 95(3): 328-333, 2019.
Article en En | MEDLINE | ID: mdl-29534877
OBJECTIVE: Posterior urethral valve is the most common lower urinary tract obstruction in male children. A high percentage of patients with posterior urethral valve evolve to end-stage renal disease. Previous studies showed that cytokines, chemokines, and components of the renin-angiotensin system contribute to the renal damage in obstructive uropathies. The authors recently found that urine samples from fetuses with posterior urethral valve have increased levels of inflammatory molecules. The aim of this study was to measure renin-angiotensin system molecules and to investigate their correlation with previously detected inflammatory markers in the same urine samples of fetuses with posterior urethral valve. METHODS: Urine samples from 24 fetuses with posterior urethral valve were collected and compared to those from 22 healthy male newborns at the same gestational age (controls). Renin-angiotensin system components levels were measured by enzyme-linked immunosorbent assay. RESULTS: Fetuses with posterior urethral valve presented increased urinary levels of angiotensin (Ang) I, Ang-(1-7) and angiotensin-converting enzyme 2 in comparison with controls. ACE levels were significantly reduced and Ang II levels were similar in fetuses with posterior urethral valve in comparison with controls. CONCLUSIONS: Increased urinary levels of angiotensin-converting enzyme 2 and of Ang-(1-7) in fetuses with posterior urethral valve could represent a regulatory response to the intense inflammatory process triggered by posterior urethral valve.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fragmentos de Péptidos / Uretra / Enfermedades Uretrales / Angiotensina I / Angiotensina II / Peptidil-Dipeptidasa A / Feto Tipo de estudio: Diagnostic_studies / Observational_studies Límite: Female / Humans / Male / Newborn / Pregnancy Idioma: En Revista: J Pediatr (Rio J) Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fragmentos de Péptidos / Uretra / Enfermedades Uretrales / Angiotensina I / Angiotensina II / Peptidil-Dipeptidasa A / Feto Tipo de estudio: Diagnostic_studies / Observational_studies Límite: Female / Humans / Male / Newborn / Pregnancy Idioma: En Revista: J Pediatr (Rio J) Año: 2019 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil