Objective To compare the infection characteristics and pathogen resistance between dialysis and non-dialysis patients with chronic kidney disease (CKD) in West China Hospital of Sichuan University, and provide a reference for clinical diagnosis and treatment. Methods The clinical data of CKD patients with non-repeated etiological evidence admitted to West China Hospital of Sichuan University between January 2010 and December 2021 were retrospectively analyzed. The patients were divided into dialysis group and non-dialysis group according to treatment methods. The infection characteristics and pathogen resistance of the two groups were analyzed by WHONET 5.6 and SPSS 23 softwares. Results A total of 1387 patients with CKD with positive etiology were included, excluding coagulase-negative Staphylococcus, which was common contamination pathogens of bloodstream infections. There were 527 patients in the dialysis group and 860 patients in the non-dialysis group in this study. There was no significant difference in gender between the two groups (P>0.05). There were significant differences in age, disease stage and specimen type between the two groups (P<0.01). The pathogenic bacteria samples of dialysis patients were mainly blood (25.81%) and dialysate (44.02%), and Staphylococcus aureus was the main pathogenic bacteria. In the non-dialysis group, sputum (49.88%) and urine (35.47%) were the main contents. In main Gram-positive pathogens, there were high resistance rates to penicillin and cephalosporin, and high sensitive rates to vancomycin and linezolid. In Gram-negative pathogenic bacteria, there were high resistance rates to penicillins, the first generation cephalosporins and the third generation cephalosporins, and high sensitive rates to β-lactamase inhibitor compound preparation, the fourth generation cephalosporins and other antibiotics. Conclusions CKD patients are easy to be complicated with infections. In clinical practice, it is necessary to pay attention to pathogen culture results, and selectively use antibiotics based on drug sensitivity results. At the same time, medical staff in hemodialysis centers should pay attention to aseptic operation and hand hygiene to reduce the risk of concurrent infection in dialysis patients.
Objective To establish interstitial cells of Cajal （ICC） loss models caused by incomplete small intestinal obstruction in rats with modified method and verify it. Methods Modified method was used to establish the models， making the ring around the small intestine but not through it. Morphological changes were observed by general signs， pathological changes were tested by HE staining and transmission electron microscope （TEM）， and changes of ICC number were tested by immunohistochemistry staining. Results Success rate of this method was 56% （28/50）， weight loss happened compared with before operation in ileus group （P＜0.01）. Hyperemia and swelling were observed in ileus group， and gastric retention was obvious. Results of HE staining and TEM showed that there was obvious inflammatory change， and ICC reduced was observed by immunohistochemistry. Conclusion ICC loss models caused by incomplete small intestinal obstruction meet the basic performance， and can be used for further research.
目的 初步观察电针足三里穴对不全肠梗阻大鼠小肠Cajal间质细胞（interstitial cells of Cajal，ICC）数量变化的影响，为进一步探讨电针足三里穴对ICC表型变化的影响奠定基础。方法 采用圈套法造成不全肠梗阻从而建立ICC数目减少的SD大鼠模型。取20只雌性大鼠采用简单随机法均分成正常对照组、不全肠梗阻30d未电针足三里穴组（梗阻组）、不全肠梗组30d电针足三里穴组（足三里组）和不全肠梗阻30d电针阴陵泉穴组（阴陵泉组） 4组。其中足三里组和阴陵泉组分别连续电针足三里穴或阴陵泉穴7d后，取小肠组织采用免疫组化方法以及免疫荧光观察ICC数量的变化。结果 正常对照组、足三里组、梗阻组及阴陵泉组ICC阳性面积分别为（102 051.00±16 969.38） μm2、（92 642.12±14 854.49） μm2、（45 221.33±6 230.20） μm2和（63 136.16±8 863.91） μm2，各组间差异有统计学意义（F=21.240，P＜0.001），其中足三里组的ICC阳性面积较梗阻组高（P＜0.05）。结论 电针足三里穴可使不全肠梗阻大鼠小肠受损的ICC数量得到部分恢复，但其具体机理有待进一步研究。