胎心不同部位心肌酶的分布

Distribution of myocardium enzymes in human embryonic heart

目的:探讨人胎心各腔壁的某些酶的含量及其在胚胎发育过程中的变化规律。方法:用组织化学方法和组织扫描光度测定法,观察了胎儿和成人心脏的5种酶。结果:乳酸脱氢酶(LDH)、琥珀酸脱氢酶(SDH)、6-磷酸葡萄糖脱氢酶(G-6-PDH)、细胞色素氧化酶(CCO)在心室壁的含量均明显大于心房壁,且右心大于左心;三磷酸腺苷酸酶(ATPase)在心房的含量略大于右心室,心房和右心室明显大于左心室。结论:人体胎心各腔壁内某些酶的含量存在差别,这种差别可能与相应的结构和功能相关。

To study the content of enzymes in myocardium of different chambers of embryonic heart. Methods： Five enzymes were observed in 18 embryonic hearts of 16 to 39 weeks and 2 adult hearts with histochemistry and histophotometry methods. Results： LDH, SDH, CCO and G-6-PDH in the ventricle were much more than that in the atrium, and more in the right heart than that in the left heart. The content of ATPase in the atrium was more than that in the right ventricle, and that in both parts was much more than that in left ventricle. Conclusion： The contents of some enzymes are different in different chambers of human embryonic heart, and this difference may be closely related to their structures and functions.