Enzyme activities and urea levels in liver tissue of Pept1+/+ and Pept1−/− animals after feeding a high-protein diet (45% energy from protein) for 18 days.

Enzyme activities of glutmate dehydrogenase (GDH), alanine aminotransferase (AST), alkaline aminotransferase (ALT) as well as urea levels were determined in liver tissue collected from Pept1+/+ and Pept1−/− animals kept on standard diet (21% protein energy) and high-protein (45% protein energy) diet. All data are presented as mean ± SD (n = 3 animals). P-value was obtained by unpaired Student's t-test.

对饲喂标准饲料（蛋白质供能占比21%）与高蛋白饲料（蛋白质供能占比45%）的Pept1+/+及Pept1−/−动物采集的肝组织，检测其谷氨酸脱氢酶（Glutamate Dehydrogenase，GDH）、丙氨酸氨基转移酶（Alanine Aminotransferase，AST）、碱性氨基转移酶（Alkaline Aminotransferase，ALT）活性及尿素水平。所有数据以平均值±标准差（n=3只动物）形式呈现，P值通过非配对Student t检验计算得到。