Sugden P H, Lazou A
Cardiovasc Res. 1984 Aug;18(8):483-5. doi: 10.1093/cvr/18.8.483.
Activities of four lysosomal proteolytic enzymes, namely cathepsins B, D, H and L are 1.8 to 2.8 times greater in atria of 360 g rats compared with ventricles. Activities of acid phosphatase and beta-acetylglucosaminidase (both lysosomal enzymes) are not significantly different in atria and ventricles. Catheptic activities thus reflect the greater protein turnover rate in atria.
与心室相比，360克大鼠心房中四种溶酶体蛋白水解酶（即组织蛋白酶B、D、H和L）的活性高1.8至2.8倍。酸性磷酸酶和β-乙酰氨基葡萄糖苷酶（均为溶酶体酶）的活性在心房和心室中无显著差异。因此，组织蛋白酶活性反映了心房中更高的蛋白质周转率。
