Eritrograma, estresse oxidativo e interação mineral em cordeiros naturalmente infectados por parasitas gastrintestinais suplementados com diferentes formas de ferro oral
Abstract:ResumoO presente estudo teve por objetivo avaliar o perfil oxidativo, eritrograma e interação mineral em cordeiros com anemia verminótica suplementados com diferentes formas de ferro oral. Foram utilizados 27 cordeiros com idade entre 6 e 8 meses naturalmente infectados por Haemonchus contortus, apresentando volume globular entre 16 e 18%. Os animais foram divididos em três grupos; Grupo controle (GC) n= 9, Grupo Sulfato ferroso (G2) n= 9 e Grupo Sulfato férrico (G3) n= 9. Os animais do G2 receberam via oral, … Show more
“…The occurrence of oxidative stress in lambs with haemonchosis has been reported; the infection may lead to increased levels of TBARS [11][12][13][32][33] as observed in the present study, which is an indication of lipid peroxidation, a common nding during haemonchosis [11][12][13][32][33]. In addition to the damage caused directly by the parasitic disease, the organism develops a defense mechanism in which local in ux of eosinophils, monocytes, macrophages, and neutrophils occurs [34][35][36].…”
The aims of this study were to measure oxidative stress, immunological responses, parasite counts and copper concentrations in plasma and livers of lambs experimentally infected with Haemonchus contortus and treated with copper oxide wire particles (COWP), either isolated or associated with the anthelmintic agent closantel. We randomly divided 30 Corriedale lambs were into five groups (six animals each): uninfected animals (Control); animals infected with H. contortus (HC); infected and treated with closantel (HC + CL); infected and treated with COWP (HC + Cu); and infected and treated with closantel plus COWP (HC + CL + Cu). All animals in the experimental groups were infected orally with H. contortus (5,000 larvae - L3). On day 14 post-infection, the treatments were initiated. The animals infected with H. contortus showed reductions in levels of non-protein thiols and glutathione as well as lower catalase and superoxide dismutase activities in serum and tissues compared to the control group. The COWP treatment reversed these alterations and significantly increased antioxidant parameters. Treatments reduced levels of thiobarbituric acid reactive substances (TBARS) in serum and tissues. The lambs supplemented with COWP had higher levels of IgG and IgE than did the other groups, suggesting an immune response to the infection. Copper concentrations in plasma accorded with the physiological values and the animals did not present any laboratory alterations related to copper intoxication. All treatments showed anthelmintic effects manifested as lower parasite counts in infected and treated animals. These findings suggest that COWP supplementation stimulated antioxidant effects and increased immune responses in lambs with haemonchosis. COWP associated with closantel may effective for lambs infected with H. contortus, considering reasonable synergism of the commercial product with the mineral, resulting in a reduction of 100% in parasite counts.
“…The occurrence of oxidative stress in lambs with haemonchosis has been reported; the infection may lead to increased levels of TBARS [11][12][13][32][33] as observed in the present study, which is an indication of lipid peroxidation, a common nding during haemonchosis [11][12][13][32][33]. In addition to the damage caused directly by the parasitic disease, the organism develops a defense mechanism in which local in ux of eosinophils, monocytes, macrophages, and neutrophils occurs [34][35][36].…”
The aims of this study were to measure oxidative stress, immunological responses, parasite counts and copper concentrations in plasma and livers of lambs experimentally infected with Haemonchus contortus and treated with copper oxide wire particles (COWP), either isolated or associated with the anthelmintic agent closantel. We randomly divided 30 Corriedale lambs were into five groups (six animals each): uninfected animals (Control); animals infected with H. contortus (HC); infected and treated with closantel (HC + CL); infected and treated with COWP (HC + Cu); and infected and treated with closantel plus COWP (HC + CL + Cu). All animals in the experimental groups were infected orally with H. contortus (5,000 larvae - L3). On day 14 post-infection, the treatments were initiated. The animals infected with H. contortus showed reductions in levels of non-protein thiols and glutathione as well as lower catalase and superoxide dismutase activities in serum and tissues compared to the control group. The COWP treatment reversed these alterations and significantly increased antioxidant parameters. Treatments reduced levels of thiobarbituric acid reactive substances (TBARS) in serum and tissues. The lambs supplemented with COWP had higher levels of IgG and IgE than did the other groups, suggesting an immune response to the infection. Copper concentrations in plasma accorded with the physiological values and the animals did not present any laboratory alterations related to copper intoxication. All treatments showed anthelmintic effects manifested as lower parasite counts in infected and treated animals. These findings suggest that COWP supplementation stimulated antioxidant effects and increased immune responses in lambs with haemonchosis. COWP associated with closantel may effective for lambs infected with H. contortus, considering reasonable synergism of the commercial product with the mineral, resulting in a reduction of 100% in parasite counts.
“…No entanto houve um aumento na peroxidação dos lipídios de membrana do eritrócito em cordeiros suplementados com doses altas de ferro injetável, similares aos resultados obtidos por Knutson et al (2000) após aplicação de ferro oral em ratos e corroboram os dados obtidos no presente estudo. Rocha et al (2012) concluíram que a suplementação com diferentes formas de ferro oral resulta em estresse oxidativo sem diferença entre os grupos na mensuração de ferro sérico apesar dos níveis de suplementação mais altos que a recomendação diária para a espécie. Isto pode ser explicado de acordo com Oats (2007) pelo mecanismo de homeostasia do ferro, onde a absorção duodenal e a excreção fecal são reguladas pela necessidade do organismo, de modo a evitar o acúmulo tóxico.…”
RESUMO.-Objetivou-se avaliar a progressão da doença e o dano oxidativo em cabras com anemia e doença respirató-ria mediante aplicação de ferro parenteral. Foram estudadas seis cabras, adultas, com parâmetros eritrocitários indicativos e anemia e manifestações de doença respiratória (tosse, espirros e secreção nasal). O grupo controle foi composto por seis cabras adultas, sadias. As cabras de ambos os grupos após serem submetidos à avaliação clínica receberam dose similar (0,5g) de hidróxido férrico em complexo dextrânico, por via intramuscular. Amostras de sangue colhidas com EDTA, antes da aplicação do ferro e 48 horas depois foram utilizadas para determinação da concentração de substâncias reativas ao ácido tiobarbitúrico (TBARS). Nas cabras doentes antes da aplicação do ferro os valores de TBARS foram equivalentes aos valores mensurados nos controles antes e após a aplicação do ferro (p>0,05). Os valores mensurados nas cabras doentes foram muito mais elevados (p<0,001) no mesmo grupo de animais depois da aplicação do ferro e nos controles antes e após a aplicação. A aplicação do ferro agravou a condição clinica dos animais com doença respiratória, sendo evidenciada uma condição de toxidade refletida pelo estresse oxidativo. Assim sendo, não se deve recomendar tal suplementação nos caprinos acometidos de doenças do aparelho respiratório. Aimed to evaluate the progression of the disease and oxidative damage in goats with anemia and respiratory disease by application of parenteral iron. Six goats, adults, with anemia and respiratory disease (coughing, sneezing and nasal discharge) were studied. The control group was composed of six adults goats, healthy. The goats of both groups after undergoing clinical evaluation received similar dose (0.5g) of ferric hydroxide in complex dextran intramuscularly. Blood samples collected in EDTA before the application of iron and 48 hours were taken for determination of concentration of thiobarbituric acid reactive substances (TBARS). In patients goats before the application of iron TBARS values were equivalent to the measured values in the control group before and after applying the iron (p>0.05). The values measured in patients goats were significantly higher (p<0.001) in the group of animals even after the application of iron and controls before and after application. The application of iron worsened the clinical condition of the animals with respiratory disease, evidencing a condition of toxicity reflected by oxidative stress. Therefore, one should not recommend to supplementation in goats with respiratory diseases.
“…Stear et al (1995) Esta talvez seja uma explicação para as pesquisas com suplementação de ferro para ovinos anêmicos apresentarem resultados diversos. Em algumas pesquisas a suplementação apresenta efeito estimulatório sobre a eritropoiese (ROCHA et al, 2007, ROCHA et al, 2013, mas em outras a suplementação não apresenta efeitos significantes (ROCHA et al, 2012). Possivelmente, a resposta dos animais à suplementação com ferro dependa do estágio de desenvolvimento da anemia e também da capacidade de resposta medular.…”
Section: Resistência Resiliência E Sensibilidade àS Infecções Por Hunclassified
can be attributed to characteristics of resistance, resilience or sensitivity. There was decrease in total protein, albumin, beta-hydroxybutyrate, triglycerides and ruminal movements, thus lower productivity, in all animals, including the resistant ones, which allows to recommend keep sheep in the absence of verminose.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.