• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
10.11606/D.7.2007.tde-28082007-102924
Document
Author
Full name
Elisabete Cristina de Oliveira Martim
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2007
Supervisor
Committee
Vattimo, Maria de Fatima Fernandes (President)
Seguro, Antonio Carlos
Shimizu, Maria Heloisa Massola
Title in Portuguese
Lesão renal aguda por glicerol: efeito antioxidante da Vitis Vinifera L.
Keywords in Portuguese
Antioxidante
Flavonóides
Lesão renal aguda
Proantocianidinas
Rabdomiólise
Abstract in Portuguese
A Lesão Renal Aguda (LRA) é a complicação mais grave da rabdomiólise. Nessa síndrome, a liberação do pigmento heme desencadeia uma lesão que se caracteriza por vasoconstrição glomerular e toxicidade celular direta com componente oxidativo. A lesão oxidativa desencadeada é uma das linhas fisiopatológicas mais intrigantes. A renoproteção com antioxidantes tem demonstrado efeito satisfatório. As proantocianidinas são antioxidantes naturais encontrados no extrato da semente da uva. O objetivo deste estudo foi avaliar o efeito antioxidante da Vitis vinifera (extrato da semente de uva) sobre a função renal de ratos submetidos à lesão por rabdomiólise. Foram utilizados ratos Wistar, adultos machos, pesando entre 250-300 gramas. A LRA foi induzida pela administração de glicerol 50% i.m (intramuscular). Os animais foram distribuídos em 4 grupos: grupo Salina (6ml/Kg de NaCl 0,9% via intraperitoneal (i.p) 1 vez ao dia), grupo Glicerol (6ml/Kg de glicerol i.m, cada região femoral recebeu 3ml/Kg de glicerol, 1 vez ao dia), grupo Vitis vinifera (3mg/Kg v.o por 5 dias) e grupo Glicerol+Vitis vinifera que recebeu Vitis vinifera por 5 dias antes do glicerol. Foram avaliados o marcador de lesão muscular (CK), a função renal (FR), a função tubular (FENa e FEK), o perfil oxidativo (peróxidos urinários-FOX-2 e MDA-TBARS) , a histologia e morfometria renal. O grupo Glicerol tratado com Vitis vinifera apresentou melhora da FR e tubular, redução dos níveis da peroxidação lipídica e melhora da histologia renal. Os resultados deste estudo confirmaram a proteção antioxidante, com repercussão histológica, da Vitis vinifera na LRA induzida por glicerol.
Title in English
Acute kidney injury by glycerol: antioxidant effect of Vitis Vinifera L.
Keywords in English
Acute kidney injury
Antioxidant
Flavonoids
Proanthocyanidins
Rhabdomyolysis
Abstract in English
The Acute Kidney Injury (AKI) is the worst complication of rhabdomyolysis. In this syndrome, the delivery of heme pigment induces an injury that distinguishes itself by glomerular vasoconstriction and direct cellular toxicity with oxidative component. The oxidative injury is an intriguing one of the pathophysiological mechanism. The renoprotection with antioxidants has demonstrated satisfactory effect. The proanthocyanidins are natural antioxidants found in grape seed extract. The aim of this study was to evaluate the antioxidant effect of Vitis vinifera (grape seed extract) on the renal function of rats submitted to the injury by rhabdomyolysis. Wistar rats, male, adults, weight ranging from 250-300 g were used. The AKI was induced intramuscular (i.m.) administration of glycerol 50%. The animals were distributed in 4 groups: Saline group (6ml/Kg of NaCl 0,9% intraperitoneal (i.p) once a day), Glycerol group (6ml/Kg of glycerol i.m, each femoral region received 3ml/Kg of glycerol, once a day), Vitis vinifera group (3mg/Kg v.o by 5 days) and Glycerol+Vitis vinifera group that has received Vitis vinifera by 5 days before glycerol. Marker of muscular injury (CK), renal function (RF), the tubular function (FENa and FEK), the oxidative profile (urinary peroxides -FOX-2 and MDA-TBARS), the histological and kidney morphometric were evaluated. The Glycerol group treated with Vitis vinifera has shown improvements in RF and tubular, reduction of levels of lipid peroxidation and amelioration of kidney histology. The results of this study have confirmed the antioxidant protection, with histological repercussion of Vitis vinifera in AKI induced by glycerol.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Elisabete_Martim.pdf (404.25 Kbytes)
Publishing Date
2007-09-05
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
Centro de Informática de São Carlos
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2021. All rights reserved.