Evaluation of the oxidative metabolism and kidney and liver histopathology in copper intoxicated lambs treated with tetrathiomolybdate and/or antioxidative vitamins / Avaliação do metabolismo oxidativo e da histopatologia renal e hepática de ovinos intoxicados por cobre e tratados com tetratiomolibdato e vitaminas antioxidantes

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The efficiency of intra muscular vitamin C (VC) and/or E (VE) associated with the classical copper chelate tetrathiomolybdate (TTM) in cumulative copper poisoning treatment was evaluated. Twenty six Santa Inês male lambs weighting 25 kg were distributed in four treatment groups (TTM; TTM+VC; TTM+VE; TTM+VCE). The oxidative metabolism was analyzed through measurement of: serum concentrations of uric acid, malondialdehyde (MDA), blood reduced glutathione, ferric reducing ability of plasma and urinary activity of N-acetyl-β-D-glucosamidase. Live weight, hematocrit; copper, urea and creatinine serum concentrations and histopathological changes were determinated. Vitamins C and E association increased the time of renal recuperation, but reduced copper serum concentration. Serum MDA raised and blood reduced glutathione concentrations diminished in animals of TTM+VE group. Serum creatinine and blood reduced glutathione concentrations had tendency of better results in TTM+VC than TTM+VE and TTM+VCE. Survival index was greater in TTM+VC. Histopathology and histochemistry showed inflammatory infiltrate in liver as well as Glomerulonephritis, inflammatory infiltrate and pigments in the kidneys, in almost all animals. The association of TTM with vitamins C and/or E didnt reduce oxidative stress and had no positive effect on treatment.

ASSUNTO(S)

pathological anatomy intoxicação cumulativa por cobre estresse oxidativo oxidative stress ruminant avaliação anatomo-patológica copper cumulative poisoning ruminante

ACESSO AO ARTIGO

Documentos Relacionados