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Foram examinados 46 equinos adultos, 6 hígidos (G1) e 40 com cólica, submetidos à laparotomia. Vinte apresentavam lesões no intestino grosso (G2) e 20 no intestino delgado (G3). Avaliaram-se os teores séricos das proteínas de fase aguda: haptoglobina, ceruloplasmina, antitripsina, transferrina e glicoproteína ácida, antes e até sete dias após a laparotomia. 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. Constatou-se elevação dos valores das proteínas de fase aguda nos animais com cólica, antes e após laparotomia, porém com valores mais elevados, precoces e persistentes nos animais do G3. Os resultados deveram-se ao processo inflamatório intestinal, desencadeado pela lesão entérica e indicam que o proteinograma sérico pode auxiliar na identificação do segmento intestinal obstruído e, consequentemente, na elaboração do prognóstico de equinos com cólica. Forty six equines were examined, 6 were healthy (G1) and 40 with colic, submitted to laparotomy. Twenty were showing lesions on the large intestine (G2) and 20 lesions on the small intestine (G3). The serum concentrations of acute phase proteins: haptoglobin, ceruloplasmin, antitrypsin, transferrin, and - acid glycoprotein before and until 7 days after laparotomy. After centrifugation and fractioning of the samples, the acute phase proteins were individualized by electrophoresis on polyacrylamide gel containing SDS-PAGE, and the concentrations were determined by computerized densitometry. The increase was verified on the levels of acute phase proteins from animals with colic, before and after laparotomy, however with higher levels, premature and persistent on animals from G3. The results were due to the process of intestinal inflammation, caused by enteric injury and indicate that the serum protein profile can assist the identifying of the obstructed bowel segment and consequently the elaboration of the prognosis of horses with colic

Determinação sérica de haptoglobina, ceruloplasmina, α1-glicoproteína ácida, transferrina e α1-antitripsina, em equinos com cólica