Perfil eletroforético do proteinograma sérico de eqüinos com obstrução experimental do cólon menor
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Data
2008-08-01
Autores
Saquetti, C. H. C. [UNESP]
Faleiros, R. R.
Macoris, D. G. [UNESP]
Fagliari, J. J. [UNESP]
Silva, S. L.
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Editor
Universidade Federal de Minas Gerais (UFMG), Escola de Veterinária
Resumo
Avaliaram-se as alterações do proteinograma sérico de eqüinos submetidos à isquemia e reperfusão do cólon menor por distensão intraluminal. Foram utilizados 10 animais submetidos à laparotomia pelo flanco, em posição quadrupedal, para a indução de obstrução no cólon menor durante um período de quatro horas. Cinco animais foram instrumentados, mas sem distensão (grupo controle - G1). em cinco outros animais, foi realizada isquemia mural por distensão do cólon menor via manguito inflado com 40mmHg (grupo distendido - G2). Foram colhidas amostras de sangue antes da intervenção cirúrgica (M1), com 4 horas da colocação do manguito (M2) e com 3 horas (M3) e 12 horas (M4) de reperfusão. Após centrifugação e fracionamento das amostras, as proteínas de fase aguda foram separadas por eletroforese em gel de poliacrilamida contendo SDS-PAGE, e suas concentrações determinadas por densitometria computadorizada. Foram encontradas 19 proteínas no fracionamento eletroforético, com peso molecular variando de 185.000 a 14.000 Daltons (Da). Os pesos moleculares encontrados, correspondentes às proteínas mais conhecidas, foram ceruloplasmina, 130.000 Da; proteína C-reativa, 122.000 Da; transferrina, 85.000 Da; α1-antitripsina, 61.000 Da; haptoglobina, 47.000 Da; e glicoproteína ácida, 40.000 Da. Os resultados mostram que proteínas de fase aguda se alteram após o trauma cirúrgico.
The changes in the serum proteinogram of equines submitted to ischemia and reperfusion of small colon by intraluminal distension were evaluated. Ten horses were submitted to standing laparotomy to induce a small colon obstruction for four hours. Five animals were instrumented without distention (control group - G1). In another five animals, mural ischemia was promoted placing a latex balloon distended with 40mmHg into the small colon (distended group - G2). Blood samples were collected before the surgical procedures (M1) and 4h after the balloon placement (M2) and 3h (M3) and 12h (M4) after reperfusion. After centrifugation and fractioning of the samples, the acute phase proteins were separated by SDS-PAGE and their concentrations were determined by computer densitometry. Nineteen proteins were separated by eletrophoresis and the molecular weights ranged from 185,000 to 14,000 Dalton (Da). The found molecular weights, related to the most known proteins, were: ceruloplasmin, 130,000 Da; C-reactive protein, 122,000 Da; transferrin, 85,000 Da; α1-antitripsin, 61,000 Da; haptoglobin, 47,000 Da; and acid glycoprotein, 40,000 Da. The results showed that acute phase proteins changed after surgical injury.
The changes in the serum proteinogram of equines submitted to ischemia and reperfusion of small colon by intraluminal distension were evaluated. Ten horses were submitted to standing laparotomy to induce a small colon obstruction for four hours. Five animals were instrumented without distention (control group - G1). In another five animals, mural ischemia was promoted placing a latex balloon distended with 40mmHg into the small colon (distended group - G2). Blood samples were collected before the surgical procedures (M1) and 4h after the balloon placement (M2) and 3h (M3) and 12h (M4) after reperfusion. After centrifugation and fractioning of the samples, the acute phase proteins were separated by SDS-PAGE and their concentrations were determined by computer densitometry. Nineteen proteins were separated by eletrophoresis and the molecular weights ranged from 185,000 to 14,000 Dalton (Da). The found molecular weights, related to the most known proteins, were: ceruloplasmin, 130,000 Da; C-reactive protein, 122,000 Da; transferrin, 85,000 Da; α1-antitripsin, 61,000 Da; haptoglobin, 47,000 Da; and acid glycoprotein, 40,000 Da. The results showed that acute phase proteins changed after surgical injury.
Descrição
Palavras-chave
Equine, Proteinogram, small colon, intraluminal distension, Equino, Proteinograma, Cólon menor, distensão intraluminal
Como citar
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Universidade Federal de Minas Gerais, Escola de Veterinária, v. 60, n. 4, p. 794-799, 2008.