고양이에 있어서 L-Cysteine Sulfinate Aminotransferase 활성에 관한 연구 : 조직 분포도 및 식이 성분 변화에 의한 영향 Tissue Distribution and Lack of Dietary Influence = L-Cysteine Sulfinate Aminotransferase Activity in the Cat

다국어 초록 (Multilingual Abstract)

Activities of cysteine sulfinate aminotransferase (CSAAT) were assessed in various tissues of cats fed one of the following experimental diets for 5 weeks : 20% protein, 0% taurine diet (LPOT) ; 20% protein, 0.15% taurine diet (LPNT) ; 60% protein, 0% taurine diet (HPOT) ; and 60% protein, 0.15% taurine diet (HPNT). Among the tissues tested, heart muscle showed the highest activity of CSAAT(μ mole glutamate·min^-1·g tissue^-1), followed by liver, kidney, skeletal muscle, spleen, brain, jejunum and ileum, regardless of the dietary treatment. CSAAT activity expressed as μ mole glutamate·min^-1·mg protein^-1 was also most high in heart muscle, followed by brain, kidney, liver, and skeletal muscle. Mean±SEM of the hepatic CSAAT activities (μ mole glutamate·min^-1·g tissue^-1) in cats fed LPOT, LPNT, HPOT and HPNT were 212±15, 213±11, 212±19, and 251±20 respectively. Mean±SEM of the cardiac CSAAT activities (μ mole glutamate·min^-1·g tissue^-1) in cats fed LPOT, LPNT, HPOT and HPNT were 422±27, 462±39, 415±18, and 429±40 respectively. These results indicate that dietary level of protein or taurine did not influence the CSAAT activity expressed as μ mole glutamate·min^-1·g tissue^-1 or μ mole glutamate·min^-1·mg protein^-1 in cat liver and heart muscle.