Jornal Vascular Brasileiro
http://www.jvb.periodikos.com.br/article/doi/10.1590/1677-5449.0022
Jornal Vascular Brasileiro
Original Article

Hidrocortisona reduz as concentrações séricas dos biomarcadores inflamatórios séricos em pacientes submetidos a endarterectomia de carótida

http://dx.doi.org/10.1590/1677-5449.0022 J Vasc Bras, vol.14, n3, p.231-240, 2015
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ResumoContextoA hidrocortisona pode reduzir a concentração dos biomarcadores inflamatórios séricos e teciduais.ObjetivoAnalisar a atividade inflamatória da proteína C-reativa ultrassensível (PCR-US), do fator de necrose tumoral (FNT)-alfa e do fator de crescimento do endotélio vascular (FCEV) séricos e teciduais, mediante administração intraoperatória de hidrocortisona, após endarterectomia de artéria carótida (EAC).MétodoVinte e dois pacientes foram divididos em Grupo Controle (5 assintomáticos e 6 sintomáticos) – não foi administrada hidrocortisona – e Grupo 1 (4 assintomáticos e 7 sintomáticos) – foram administrados 500 mg intravenoso de hidrocortisona. O PCR-US, o FNT-alfa e o FCEV séricos foram dosados no pré-operatório e em 1 hora, 6 horas e 24 horas após a EAC. Na placa carotídea, mensuramos os níveis de FNT-alfa e FCEV.ResultadosO grupo 1 exibiu menor concentração sérica de FNT-alfa em 1 hora (p=0,031), 6 horas (p=0,015) e 24 horas (p=0,017) após a EAC, e menor concentração de FCEV em 1 hora (p=0,006) e 6 horas (p=0,005) após a EAC, em relação ao grupo controle. Os pacientes sintomáticos do grupo 1 exibiram menor concentração de FNT-alfa em 1 hora e 6 horas após a EAC, e menor concentração de FCEV em 1 hora após a EAC, em relação ao grupo controle. Não houve diferença estatística entre as concentrações teciduais de FNT-alfa e FCEV entre o grupo controle e o grupo 1.ConclusãoA hidrocortisona reduz as concentrações séricas pós-operatórias de FNT-alfa e FCEV, em especial nos sintomáticos; porém, não reduz os níveis teciduais destes biomarcadores.
hidrocortisona, inflamação, estenose das carótidas
AbstractBackgroundHydrocortisone may reduce serum and tissue concentrations of inflammatory biomarkers.ObjectiveTo analyze the inflammatory activity of serum and tissue high-sensitivity C-reactive protein (hsCRP), tumor necrosis factor (TNF)-α and vascular endothelial growth factor (VEGF) after intraoperative administration of hydrocortisone, after carotid endarterectomy (CEA).MethodTwenty-two patients were allocated to a Control Group (5 asymptomatic and 6 symptomatic patients) and were not administered hydrocortisone or to Group 1 (4 asymptomatic and 7 symptomatic patients) and were administered 500 mg intravenous hydrocortisone. Serum levels of hsCRP, TNF-α and VEGF were tested for the preoperative period and at 1 hour, 6 hours and 24 hours after CEA. Levels of TNF-α and VEGF were also measured in carotid plaques.ResultsGroup 1 exhibited lower concentrations of serum TNF-α at 1 hour (p=0.031), 6 hours (p=0.015) and 24 hours (p=0.017) after CEA and lower concentrations of serum VEGF at 1 hour (p=0.006) and 6 hours (p=0.005) after CEA, relative to controls. Symptomatic patients in group 1 exhibited lower concentrations than controls for serum TNF-α at 1 hour and 6 hours after CEA and lower concentrations than controls for serum VEGF at 1 hour after CEA. There were no statistical differences in tissue concentrations of TNF-α or VEGF between the control group and group 1.ConclusionHydrocortisone reduces postoperative concentrations of serum TNF-α and VEGF, especially in symptomatic patients; but does not reduce tissue levels of these biomarkers.
hydrocortisone, inflammation, carotid stenosis

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