论文部分内容阅读
肿瘤是宿主体内的一种真性寄生物,在其增长过程中需同宿主竞争有限的氮源,对机体的氨基酸,蛋白质代谢产生不良影响。但在不伴有体重下降的肿瘤病人,血浆中氨基酸谱尚能维持在正常范围。某些类型的肿瘤有特殊的氨基酸代谢。进展期肿瘤使宿主的蛋白质合成速率和分解速率均加快,其有利于肿瘤自身的生长,对机体无益。对肿瘤病人行营养支持有利于提高机体承受抗肿瘤疗法的能力。
The tumor is a true parasite in the host, and it needs to compete with the host for a limited amount of nitrogen sources during its growth process, which has an adverse effect on the body’s amino acid and protein metabolism. However, in patients with tumors without weight loss, the plasma amino acid spectrum can still be maintained in the normal range. Certain types of tumors have special amino acid metabolism. Progressive tumors increase the rate of protein synthesis and decomposition of the host, which is beneficial to the growth of the tumor and is not beneficial to the body. Nutrient support for cancer patients helps improve the body’s ability to withstand anti-tumor therapy.