Foram avaliadas amostras de soro sanguíneo de 10 cães sadios e de 12 com linfoma, utilizando-se a eletroforese em gel de poliacrilamida contendo dodecil sulfato de sódio. Houve diferença entre as médias dos teores de proteína total de cães sadios, 7,68g/dL±0,46 e de cães com linfoma, 7,93g/dL±2,49. As concentrações de IgA e IgG não foram diferentes entre os grupos. Os teores das proteínas de pesos moleculares 142000, 110000, 52000, 49000, 24000 e 18000 dáltons foram mais elevados em cães com linfoma. Os cães com linfoma apresentaram concentrações mais elevadas de ceruloplasmina, 43,95mg/dL±18,19, e haptoglobina, 554mg/dL±449,51, e menores de albumina, 2908mg/dL±476,67, em comparação aos cães sadios (ceruloplasmina: 3,42mg/dL±7,44; haptoglobina: 94,54mg/dL±59,50 e albumina: 4207mg/dL±206,18). Conclui-se que concentrações séricas mais elevadas de ceruloplasmina e haptoglobina e menores de albumina podem estar associadas ao linfoma em cães.

Blood serum samples of ten healthy dogs and 12 dogs with lymphoma were evaluated by means of sodium dodecil sulphate-polyacrylamide gel electrophoresis. There was difference in total protein concentrations among healthy dogs, 7.68g/dL±0.46 and dogs with lymphoma, 7.93g/dL±2.49 values of immunoglobulins A and G presented no difference between groups. Serum proteins with molecular weights 142,000; 110,000; 52,000; 49,000; 24,000; and 18,000 Daltons presented increased concentrations in dogs with lymphoma. Dogs with lymphoma presented increased ceruloplasmin (43.95mg/dL±18.19) and haptoglobin (554mg/dL±449.51) values and lesser albumin concentration (2,908mg/dL±476.67) when compared to healthy dogs (ceruloplasmin: 3.42mg/dL±7.44; haptoglobin: 94.54mg/dL±59.50, and albumin: 4,207mg/dL±206.18). In conclusion, increased ceruloplasmin and haptoglobin and lesser albumin serum concentrations are possibly related to lymphoma in dogs.