血吸虫摄食宿主血液,但不清楚那一些血液成分被虫所作用。以前的研究已表明,除表皮和盲肠外,食道可能是第3个起消化吸收作用的部位。为了进一步研究这方面的问题,作者以β-甘油磷酸酯(β-GP)和对硝基苯磷酸(NPP)为基质、用生物化学和细胞化学方法测定了与消化功能有关的酸性磷酸酶活力,并用电子密度示踪法研究了可能存在的吞噬作用。曼氏血吸虫匀浆对β-GP及NPP二种基质水解的最适pH不同,大量的Mg~(++)离子可明显地抑制它们的水解,与基质等克分 Schistosomes feed on the host’s blood, but it’s unclear what those blood components are affected by worms. Previous studies have shown that, in addition to the epidermis and cecum, the esophagus may be the third site of digestion and absorption. To further investigate this issue, the authors used biochemical and cytochemical methods to determine acid phosphatase activity associated with digestive function using β-glycerophosphate (β-GP) and p-nitrophenylphosphate (NPP) as substrates , And studied the possible phagocytosis by electron density tracer method. Schistosoma mansoni homogenate on β-GP and NPP two kinds of substrate hydrolysis of the optimum pH is different, a large number of Mg ~ (++) ions can significantly inhibit their hydrolysis,