Abstract
The incidence of gastric cancer cachexia is high and the clinical management is poor, so the study aimed to clarify the mechanism of muscle wasting to better screen patients with gastric cancer cachexia. Gastric cancer patients undergoing radical gastrectomy were divided into cachexia with sarcopenia (CS, n = 13) and normal (N, n = 10) two groups. The possible mechanism of skeletal muscle reduction was explored through Tandem Mass Tag (TMT) technique, Perls staining, Western blot analysis and measurement of oxidative stress indicators. The preoperative weight, weight loss, body mass index, calorie intake and skeletal muscle index values of the CS group were significantly lower than those of the N group (P < 0.05). We identified 114 differentially expressed proteins (DEP) in the muscles of two groups using TMT analysis. Bioinformatics analysis of DEP revealed that ferritin, iron and oxidative stress may be related to skeletal muscle consumption. Following Perls staining and measurement iron concentration in skeletal muscles, we found that the iron in the muscles of the CS group was significantly increased, and at the same time, western blot analysis showed that the expression of ferritin in the CS group was significantly increas...Continue Reading
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