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NGAL como marcador precoce de lesão renal em ratos submetidos à isquemia renal sob anestesia geral balanceada

Authors: Azevedo, Vera Lúcia Fernandes de;

NGAL como marcador precoce de lesão renal em ratos submetidos à isquemia renal sob anestesia geral balanceada

Abstract

Acute renal injury (ARI), characterized by abrupt renal function decline, has variable incidence, depending on the criteria used for its definition. Presently, the criterion most often used for kidney function evaluation is plasma creatinine dosing; however, because it suffers interference, it is not an ideal marker. A new renal function biomarker, neutrophil gelatinase-associated lipocalin (NGAL) has been studied as one of the earliest and most sensitive kidney injury marker following ischemia/reperfusion or nephrotoxic injury, and it is easily identified in blood and urine. The RIFLE classification for ARI with NGAL validation is a new perspective for early ARI diagnosis and institution of preventive and protective measures in risk situations. This study aimed at evaluating ARI by means of NGAL plasma dosing in rats submitted to renal ischemia under general balanced anesthesia and hydrated with ringer lactate or hydroxyethylamide and at correlating plasma NGAL dosing with histological renal injury. Thirty male Wistar rats (>350g) were used. They were randomly distributed into three groups with ten animals each and induced by 4% isoflurane. Orotracheal intubation was performed and the animals were placed under mechanical ventilation. The left carotid artery and the right jugular vein were catheterized for monitorization and blood collection. ETCO2, PAMI, T were continuously monitorized (Datex, AS3). Maintenance was performed by 1% to 3% isoflurane and 0.05 remifentanil at 0.1 μg.kg-1min-1 in continuous infusion according to the group to which the animals belonged: G1 (General balanced anesthesia + Ringer lactate + renal ischemia/reperfusion); G2 (General balanced anesthesia + hydroxyethylamide (HES) + renal ischemia/reperfusion) and G3 - Control (General balanced anesthesia + Ringer lactate, without renal... (Complete abstract click electronic access below)

A lesão renal aguda (LRA) caracterizada como redução abrupta da função renal tem incidência variável, dependendo dos critérios utilizados para sua definição. Atualmente, o mais empregado para avaliação de função renal é a dosagem de creatinina plasmática, porém, por sofrer interferência de vários fatores faz com que a mesma não seja o marcador ideal. Um novo biomarcador da função renal, a lipocalina associada à gelatinase dos neutrófilos (NGAL), tem sido estudado como um dos mais precoces e sensíveis marcadores de lesão de rins após isquemia/reperfusão ou lesão nefrotóxica, sendo facilmente identificada no sangue e na urina. A classificação RIFLE para LRA com a validação da NGAL é uma nova perspectiva para o diagnóstico precoce da LRA e instituição de medidas preventivas e protetoras em situações de risco. O objetivo dessa pesquisa foi avaliar a LRA por meio da dosagem plasmática da NGAL em ratos submetidos à isquemia renal sob anestesia geral balanceada e hidratados com Ringer lactato ou com hidroxietilamido e correlacionar a dosagem da NGAL plasmática com a lesão histológica renal. Em trinta ratos Wistar machos (>350g) distribuídos aleatoriamente em três grupos de dez animais, induzidos com isoflurano a 4%, foi realizada intubação orotraqueal e colocados sob ventilação mecânica. Foram cateterizadas a artéria carótida esquerda e a veia jugular direita para monitorização e coletas sanguíneas. ETCO2, PAMI, T foram continuamente monitorizados (Datex, AS3). A manutenção foi realizada com isoflurano na concentração de 1% a 3% e remifentanil 0,05 a 0,1 μg.kg-1min-1 em infusão continua conforme o grupo pertencente: G1 (Anestesia geral balanceada + Ringer lactato + isquemia/reperfusão renal); G2 (Anestesia geral balanceada + hidroxietilamido (HES) + isquemia/reperfusão renal) e G3...

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pós-graduação em Anestesiologia - FMB

Country
Brazil
Keywords

616, Renal ischemia, Rins - Doenças, 630, Isquemia renal

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green