目的 探讨重楼皂苷Ⅰ（PPI）对慢性髓系白血病细胞（K562）细胞的抑制作用及可能的作用机制。方法 采用CCK-8法筛选药物最适浓度,将培养时间为24 h的药物最适浓度作为后续实验的干预浓度。分组如下：（1）空白组;（2）PPI组;（3）抑制剂组;（4）PPI+抑制剂组。采用CCK-8法检测细胞增殖率;AO/EB染色观察细胞形态;流式细胞术检测凋亡率;ROS检测试剂盒检测活性氧（ROS）含量、还原型谷胱甘肽含量检测试剂盒检测谷胱甘肽（GSH）含量、细胞亚铁比色法测试盒检测细胞亚铁（Fe²⁺）含量;qRT-PCR法和蛋白免疫印迹法检测各组肿瘤蛋白53（p53）、钠氯离子依赖性氨基酸转运蛋白11（SLC7A11）、谷胱甘肽过氧化物酶4（GPX4）mRNA及蛋白表达量。结果 PPI抑制K562细胞的生长,且呈一定的剂量及时间依赖性（与同时间段的对照组0μmol/L比较,均P<0.01）。与空白组相比,PPI抑制K562细胞的增殖,提高了凋亡率,而铁死亡抑制剂（Ferrostian-1）的使用逆转了PPI对K562凋亡的促进作用（P<0.01）。与空白组相比,PPI组ROS、Fe²⁺含量升高,GSH含量下降,而铁死亡抑制剂的使用可下调ROS、Fe²⁺,上调GSH的含量（P<0.01）。PPI组较空白组p53 mRNA和蛋白表达水平升高,而SLC7A11、GPX4 mRNA和蛋白表达水平下降（P<0.05）;PPI+抑制剂组细胞较重楼皂苷组p53 mRNA和蛋白表达水平下降,而SLC7A11、GPX4 mRNA和蛋白表达水平升高（P<0.05）。结论 PPI能够有效抑制K562细胞增殖,促进K562细胞铁死亡,其分子机制可能与p53信号通路的调控有关。

Objective To investigate the inhibitory effect of polyphyllin I（PPI）on chronic myeloid leukemia cells（K562）and its possible mechanism．Methods K562 cell line was cultured in suitable environment,and the optimal concentration of the drug was screened by CCK-8 method．The optimal concentration of the drug cultured for 24 hours was used as the intervention concentration of the follow-up experiment．Cells were divided into the following groups：（1）blank group,（2）saponins group,（3）inhibitor group and（4）saponins + inhibitor group．The cell proliferation rate was detected by CCK-8 method．The cell morphology was observed by AO/EB staining．The apoptosis rate was detected by flow cytometry．The contents of reactive oxygen species（ROS）,glutathione（GSH）and ferrous（Fe²⁺）in different groups were detected,and the expression of mRNA and protein in different groups were detected by qRT- PCR and Western blot respectively．Results PPI significantly inhibited the growth of K562 cells in a dose-and time-dependent manner．Compared with the blank group,PPI significantly inhibited the proliferation of K562 cells and increased the apoptosis rate of K562 cells,while the use of ferroptosis inhibitor（Ferrostian-1）reversed the promoting effect of PPI on apoptosis of K562 cells．Compared with the blank group,the contents of reactive oxygen species（ROS）and ferrous iron（Fe²⁺）increased and the content of glutathione（GSH）decreased in the saponins group．The use of Ferrostian-1 could down-regulate the contents of ROS and Fe²⁺ and increase the content of GSH in the cells treated with the drug．Compared with the blank group,the expression of p53 mRNA and protein in the saponins group increased,while the expression of SLC7A11,GPX4 mRNA and protein decreased．The expression of p53 mRNA and protein in the saponins + inhibitor group was lower than that in the saponins group,while the expression levels of SLC7A11,GPX4 mRNA and protein increased．Conclusions PPI can effectively inhibit the proliferation of K562 cells and promote ferroptosis in K562 cells．The molecular mechanism can be related to the regulation of p53 signal pathway．

炎症性肠病（IBD）作为一种慢性、易复发的炎症性疾病,被世界卫生组织归类为现代医疗领域的难治性疾病之一。其确切发病机制尚不清晰,目前主要认为与肠菌失衡触发宿主过度的肠黏膜免疫反应,进而在遗传易感性的个体中引发肠黏膜的损伤有关。目前,尚无特效的靶点能治愈IBD。过氧化物酶体增殖物激活受体（PPARs）作为核受体超家族的一员,在机体的生长发育、炎症调控以及代谢过程中扮演着重要角色,且被视为治疗包括IBD在内的多种疾病的重要潜在靶点,并被认为与肠道菌群关系密切。文章旨在探讨PPARs与肠道菌群的关系在IBD中的作用,从而挖掘IBD新的潜在诊疗靶点,开发新的治疗策略,为临床上IBD的诊断和治疗提供新的思路和方法。

Inflammatory bowel disease（IBD）,characterized as a chronic and recurrent inflammatory condition,is classified by the World Health Organization as one of the intractable diseases in modern medicine．The precise pathogenesis of IBD remains unclear,but current research widely believes that it is closely related to dysbiosis of the gut microbiota．Imbalance in the gut flora triggers an excessive immune response in the host’s intestinal mucosa,leading to mucosal damage in genetically susceptible individuals．To date,no specific targets have been identified that can cure IBD．Peroxisome proliferator-activated receptors（PPARs）,as members of the nuclear receptor superfamily,play significant roles in growth and development,inflammation regulation,and metabolic processes．They are regarded as potential effective targets for treating various diseases,including IBD,and are closely related to the gut microbiota．This review aims to discuss the progress in understanding the role of the relationship between PPARs and gut microbiota in IBD,so as to find new potential targets for the diagnosis and treatment of IBD,develop new treatment strategies,provide new ideas and methods for the diagnosis and treatment of IBD in clinical practice．

目的 分析血红蛋白水平对上肢骨折患者深静脉血栓形成(DVT)的影响。方法 采用回顾性分析法,对2018年1月—2021年6月期间来我院进行治疗的386例上肢骨折患者展开研究,依据患者是否发生DVT分为DVT组(n=114)和对照组(n=272)。对2组患者的各项一般资料和临床资料进行比较,对有统计学意义的因素进一步行Logistic多因素回归分析,探究上肢骨折患者发生DVT的危险因素,并Pearson分析血红蛋白水平与各危险因素的相关性。结果 与对照组相比,DVT组患者为女性、年龄＞60岁、体质量指数(BMI)＞25 kg/m²、冠状动脉粥样硬化性心脏病、糖尿病、合并其他骨折、受伤至超声检查时间≥3 d、受伤至手术时间＞5 d、纤维蛋白降解产物(FDP)≥35 mg/L、凝血酶时间(TT)≥17 s、血红蛋白≤120 g/L、血小板计数/血红蛋白比值≥2.5、血糖≥8 mmol/L、全身麻醉、术后住院时间＜7 d的发生率升高,差异有统计学意义(P＜0.05)。Logistic多因素回归分析显示,年龄＞60岁、BMI＞25 kg/m²、受伤至手术时间＞5 d、血红蛋白≤120 g/L、血小板计数/血红蛋白比值≥2.5、血糖≥8 mmol/L是上肢骨折患者发生DVT的危险因素(P＜0.05)。上肢骨折患者的血红蛋白水平与年龄、BMI、受伤至手术时间、血小板计数/血红蛋白比值、血糖水平呈现负相关(P＜0.05)。结论 血红蛋白≤120 g/L是上肢骨折患者发生DVT的危险因素,与DVT的发生存在相关性。

Objective To analyze the influence of hemoglobin level on deep vein thrombosis (DVT) in patients with upper extremity fractures. Methods A retrospective study of 386 upper extremity fracture patients who came to our hospital for treatment from January 2018 to June 2021 was carried out.According to whether the patients had DVT or not, they were divided into DVT group (n=114) and control group (n=272).The general data and clinical data of the two groups were compared, and the statistically significant factors were further analyzed by Logistic multivariate regression analysis to explore the risk factors of DVT in patients with upper limb fractures, and analyzed the hemoglobin level and the risk factors correlation by Pearson. Results Compared with the control group, the DVT group had increased incidence in female, age >60 years old, body mass index (BMI) >25 kg/m², coronary heart disease, diabetes mellitus, other fractures, injury to ultrasonic time ≥3 days, injury to operation time >5 days, fibrin degradation products (FDP) ≥35 mg/L, thrombin time (TT) ≥ 17 s, hemoglobin ≤120 g / L, platelet count / hemoglobin ratio ≥2.5, blood glucose ≥8 mmol/L, general anesthesia and postoperative hospital stay <7 days, and the difference was significant (P<0.05).Logistic multivariate regression analysis showed that age>60, BMI>25 kg/m², time from injury to operation>5 days, hemoglobin≤120 g/L, platelet count/hemoglobin ratio ≥2.5, blood glucose ≥8 mmol/L were the risk factors of DVT in patients with upper extremity fractures (P<0.05).The hemoglobin level of those patients was negatively correlated with age, BMI, time from injury to operation, platelet count/hemoglobin ratio and blood glucose level (P<0.05). Conclusions Hemoglobin ≤120 g/L was a risk factor for DVT in patients with upper extremity fractures, and it was related to the occurrence of DVT.

目的 分析心力衰竭伴快速心房颤动(简称:心衰伴快速房颤)患者接受胺碘酮急诊抢救治疗的效果及对24 h心室率的影响。方法 将2017年1月—2020年12月急诊接诊且行西地兰治疗的60例心衰伴快速房颤患者作为对照组,将同期急诊接诊且行胺碘酮治疗的60例心衰伴快速房颤患者作为观察组,对组间心功能指标、炎症因子水平、心室率、临床疗效、药物不良反应展开分析。结果 ①组间心功能指标、炎症因子水平在治疗前无差异,P>0.05;观察组心功能指标、炎症因子水平在治疗后优于对照组,P<0.05;②组间心室率在治疗前无差异,P>0.05;观察组治疗后4 h、12 h、24 h心室率均低于对照组,P<0.05;③观察组5例无效(8.33%),对照组14例无效(23.33%),P<0.05;④观察组药物不良反应率(3.33%)与对照组药物不良反应率(5.00%)无差异,P>0.05。结论 在急诊抢救心衰伴快速房颤患者时采用胺碘酮,可以改善患者心功能、炎症反应、心室率,加之无明显不良反应,值得推广。

Objective To analyze the efficacy of emergency treatment with amiodarone and its influence on 24-hour ventricular rate in patients with heart failure and rapid atrial fibrillation. Methods From January 2017 to December 2020, 60 patients with heart failure and rapid atrial fibrillation who received emergency treatment and cedilanide treatment were selected as the control group, and 60 patients with heart failure and rapid atrial fibrillation who received emergency treatment and amiodarone treatment at the same period were selected as the observation group. Results ① There was no significant difference in cardiac function index and inflammatory factors level between the two groups before treatment, P>0.05.The cardiac function index and inflammatory factors level of the observation group were more improved than those of the control group after treatment, P<0.05. ② There was no significant difference in ventricular rate between the two groups before treatment, P>0.05.The ventricular rates of the observation group at 4 h, 12 h and 24 h after treatment were lower than those of the control group, P< 0.05. ③ Treatment for 5 cases (8.33%) in the observation group, 14 cases (23.33%) in the control group were ineffective, P<0.05. ④ There was no significant difference in the adverse drug reaction incidence between the observation group (3.33%) and the control group (5.00%), P>0.05. Conclusion Amiodarone could improve the cardiac function, inflammatory reaction and ventricular rate of patients with heart failure and rapid atrial fibrillation in emergency treatment, and there was no obvious adverse reaction, so it is worthy of promotion.

目的 探讨应用三管引流法在防治直肠癌前切除术后吻合口漏中的疗效。方法 选取在我科2018年4月—2020年3月接受腹腔镜或者开腹直肠癌前切除术患者186例,将患者随机分为两组,研究组(三管引流法)96例,对照组(常规引流法)90例,进行对比研究。比较两组患者术后吻合口漏及恢复情况。结果 研究组患者吻合口漏发生率、非计划手术率、回肠造口率低于对照组(P＜0.05),吻合口漏患者中,研究组体温恢复正常时间、C反应蛋白(CRP)恢复正常时间及住院时间均少于对照组,差异均有统计学意义(P＜0.05)。结论 应用三管引流法,可预防直肠癌前切除术后吻合口漏,通过非手术治疗避免非计划二次手术,缩短吻合口漏患者恢复时间,显示更好的临床疗效。

Objective To explore and evaluate the clinical application value of three-tube drainage for the treatment of anastomotic leakage after low anterior resection for rectal cancer. Methods We retrospectively analyzed a total of 186 rectal cancer patients after low anterior resection for rectal cancer in our hospital from April 2018 to March 2020. According to the difference of prevention to anastomotic leakage, these patients were divided into two groups randomly that 90 cases used conventional drainage as control group, and 96 cases used three-tube drainage as study group. Postoperative recovery and anastomotic leakage were compared between these two groups. Results The rate of anastomotic leakage, ileostomy and unplanned reoperation of study group were lower than those of control group (P＜0.05).The times returned to normal of body temperature and C-reactive protein (CRP), the average length of stay in hospital of study group were shorter than those of control group respectively (P＜0.05). Conclusion The application of three-tube drainage may prevent anastomotic leakage and unplanned reoperation after low anterior resection for rectal cancer and shorten postoperative recovery time, to reveal better clinical effects.

目的 探讨不同中医体质老年糖尿病患者心率变异性与自主神经功能的关系。方法 选取2016年3月—2017年4月在我院治疗的老年糖尿病患者250例,检测各中医体质患者SDNN、SDANN、SDNNI、RMSSD、PNN50%、LF、HF、LF/HF以及空腹血糖(FBG)、糖化血红蛋白(HbA1c)。结果 总偏颇体质患者SDNN、SDANN、SDNNI、RMSSD、PNN50%、LF和HF分别为(88.37±10.02)ms、(78.82±9.44)ms、(41.14±11.43)ms、(22.28±6.53)ms、(10.03±4.33)ms、(203.38±78.23)ms²和(122.21±80.03)ms²,低于平和质患者(P＜0.05),而LF/HF为(1.68±0.43),高于平和质患者(P＜0.05);血瘀质患者SDNN、SDANN、SDNNI、RMSSD和PNN50低于气虚质、阴虚质、痰湿质、湿热质和其他型患者(P＜0.05);阴虚质患者LF、HF低于气虚质、血瘀质、痰湿质、湿热质和其他型患者(P＜0.05);阴虚质患者LF/HF低于气虚质、血瘀质、痰湿质、湿热质患者(P＜0.05);其他型患者SDNN、SDANN、SDNNI、RMSSD、PNN50、LF、HF高于气虚质、阴虚质、痰湿质、湿热质患者(P＜0.05),而LF/HF低于气虚质、阴虚质、痰湿质、湿热质患者(P＜0.05);不同中医体质患者FBG、HbA1c比较差异无统计学意义(P＞0.05)。结论 糖尿病患者偏颇体质较平和质患者心率变异性降低,表现为交感神经张力增大,迷走神经张力降低,其平衡协调破坏。

Objective To explore the relationship between heart rate variability and autonomic nervous function in elderly diabetic patients with different constitutions of traditional Chinese medicine. Methods 250 elderly patients with diabetes mellitus in our hospital from March 2016 to April 2017 were selected; the SDANN, SDNNI, RMSSD, PN50%, LF, HF, LF/HF, fasting blood glucose (FBG) and glycosylated hemoglobin (HbA1c) were measured. Results In patients with general biased constitution, SDANN, SDNNI, RMSSD, PN50%, LF and HF were (88.37±10.02) ms, (78.82±9.44) ms, (41.14±11.43) ms, (22.28±6.53) ms, (10.03 ±4.33) ms, (203.38±78.23) ms² and (122.21±80.03) ms², which were lower than those in patients with plain constitution (P＜0.05), while LF/HF was (1.68±0.43), which was higher than that in patients with plain constitution (P＜0.05); in patients with blood stasis, SDANN, SDNNI, RMSSD and PN50 were lower than those with Qi deficiency, Yin deficiency, phlegm-dampness, damp-heat and other types (P＜0.05); LF and HF in Yin deficiency type patients were lower than those in Qi deficiency type, blood stasis type, phlegm-dampness type, damp-heat type and other types (P＜0.05); LF/HF in Yin deficiency patients was lower than that in Qi deficiency patients, blood stasis patients, phlegm-dampness patients and damp-heat patients (P＜0.05); SDANN, SDNNI, RMSSD, PN50, LF and HF in other types of patients were higher than Qi deficiency, Yin deficiency, phlegm-dampness and damp-heat (P＜0.05), while LF/HF was lower than those with Qi deficiency, Yin deficiency, phlegm-dampness and damp-heat (P＜0.05); there was no significant difference in FBG and HbA1c in patients with different constitutions of TCM (P>0.05). Conclusion The heart rate variability of biased constitution patients with diabetes mellitus was lower than that of patients with mild constitution, manifested by increased sympathetic nerve tension, decreased vagal nerve tension and destroyed balance and coordination.

       目的  探讨重楼皂苷Ⅰ（PPI）对慢性髓系白血病细胞（K562）细胞的抑制作用及可能的作用机制。方法  采用CCK-8法筛选药物最适浓度，将培养时间为24 h的药物最适浓度作为后续实验的干预浓度。分组如下：（1）空白组；（2）PPI组；（3）抑制剂组；（4）PPI+抑制剂组。采用CCK-8法检测细胞增殖率；AO/EB染色观察细胞形态；流式细胞术检测凋亡率；ROS检测试剂盒检测活性氧（ROS）含量、还原型谷胱甘肽含量检测试剂盒检测谷胱甘肽（GSH）含量、细胞亚铁比色法测试盒检测细胞亚铁（Fe²⁺）含量；qRT-PCR法和蛋白免疫印迹法检测各组肿瘤蛋白53（p53）、钠氯离子依赖性氨基酸转运蛋白11（SLC7A11）、谷胱甘肽过氧化物酶4（GPX4）mRNA及蛋白表达量。结果  PPI抑制K562细胞的生长，且呈一定的剂量及时间依赖性（与同时间段的对照组0μmol/L比较，均P＜0.01）。与空白组相比，PPI抑制K562细胞的增殖，提高了凋亡率，而铁死亡抑制剂（Ferrostian-1）的使用逆转了PPI对K562凋亡的促进作用（P＜0.01）。与空白组相比，PPI组ROS、Fe²⁺含量升高，GSH含量下降，而铁死亡抑制剂的使用可下调ROS、Fe²⁺，上调GSH的含量（P＜0.01）。PPI组较空白组p53 mRNA和蛋白表达水平升高，而SLC7A11、GPX4 mRNA和蛋白表达水平下降（P＜0.05）；PPI+抑制剂组细胞较重楼皂苷组p53 mRNA和蛋白表达水平下降，而SLC7A11、GPX4 mRNA和蛋白表达水平升高（P＜0.05）。结论  PPI能够有效抑制K562细胞增殖，促进K562细胞铁死亡，其分子机制可能与p53信号通路的调控有关。

       Objective  To investigate the inhibitory effect of polyphyllin I（PPI）on chronic myeloid leukemia cells（K562）and its possible mechanism．Methods  K562 cell line was cultured in suitable environment，and the optimal concentration of the drug was screened by CCK-8 method．The optimal concentration of the drug cultured for 24 hours was used as the intervention concentration of the follow-up experiment．Cells were divided into the following groups：（1）blank group，（2）saponins group，（3）inhibitor group and（4）saponins + inhibitor group．The cell proliferation rate was detected by CCK-8 method．The cell morphology was observed by AO/EB staining．The apoptosis rate was detected by flow cytometry．The contents of  reactive oxygen species（ROS），glutathione（GSH）and ferrous（Fe²⁺）in different groups were detected，and the expression of mRNA and protein in different groups were detected by qRT- PCR and Western blot respectively．Results  PPI significantly inhibited the growth of K562 cells in a dose-and time-dependent manner．Compared with the blank group，PPI significantly inhibited the proliferation of K562 cells and increased the apoptosis rate of K562 cells，while the use of ferroptosis inhibitor（Ferrostian-1）reversed the promoting effect of PPI on apoptosis of K562 cells．Compared with the blank group，the contents of reactive oxygen species（ROS）and ferrous iron（Fe²⁺）increased and the content of glutathione（GSH）decreased in the saponins group．The use of Ferrostian-1 could down-regulate the contents of ROS and Fe²⁺ and increase the content of GSH in the cells treated with the drug．Compared with the blank group，the expression of p53 mRNA and protein in the saponins group increased，while the expression of SLC7A11，GPX4 mRNA and protein decreased．The expression of p53 mRNA and protein in the saponins + inhibitor group was lower than that in the saponins group，while the expression levels of SLC7A11，GPX4 mRNA and protein increased．Conclusions  PPI can effectively inhibit the proliferation of K562 cells and promote ferroptosis in K562 cells．The molecular mechanism can be related to the regulation of p53 signal pathway．