With the widespread use of antimicrobial agents, the issue of microbial drug resistance has become increasingly severe, emerging as a major global public health challenge. Worldwide, there are significant differences in the types of drug-resistant bacteria, their epidemiological trends, and their resistance mechanisms. This article aims to review the current global status of microbial drug resistance, with a focus on the epidemiological trends, resistance mechanisms, and corresponding clinical treatment strategies for common drug-resistant bacteria and fungi, in order to provide a theoretical basis for promoting the rational use of antimicrobial agents.

Objective:To investigate the clinical value of AB classification combined with Arima classification for predicting the invasion depth of superficial esophageal squamous cell carcinomas (SESCC).Methods:From July 2017 to December 2022, 76 cases of SESCC receiving endoscopic submucosal dissection and intra-epithelial papillary capillary loops (IPCL) AB classification as type B2 in Ningbo Medical Center Lihuili Hospital and Jiangsu Province Hospital of Chinese Medicine were included in the study. IPCL was reclassified according to Arima classification. The depth of infiltration determined by pathology was the gold standard. The sensitivity, the specificity, the positive predictive value and the negative predictive value of B2-Arima combined classification in predicting the invasion depth of SESCC were analyzed.Results:In the 76 cases of type B2 IPCL lesions, 31 cases (40.79%) were T1a-MM/T1b-SM1 SESCC. The sensitivity, the specificity, the positive predictive value, the negative predictive value and the diagnostic accuracy of type B2 IPCL to predict T1a-MM/T1b-SM1 SESCC were 70.45% (31/44), 79.64% (176/221), 40.79% (31/76), 93.12% (176/189), and 78.11% (207/265), respectively. After Arima classification, the above corresponding indicators of type B2-4ML and type B2-AVA-4M IPCL in predicting T1a-MM/T1b-SM1 SESCC were 61.36% (27/44), 88.24% (195/221), 50.94% (27/53), 91.98% (195/212), 83.77% (222/265) and 38.64% (17/44), 94.57% (209/221), 58.62% (17/29), 88.56% (209/236), 85.28% (226/265), respectively.Conclusion:B2 IPCL combined with Arima classification can improve the diagnostic accuracy of T1a-MM/T1b-SM1 ESSCC.

Objective:To study the occurrence and disappearance of gallbladder polyps in patients who underwent multiple ultrasonographic examinations, and to determine the risk factors of formation of gallbladder polyps.Methods:From January 2014 to December 2017, relevant data on patients who underwent follow-up abdominal ultrasound examinations at the Health Screening Center of Xuanwu Hospital was retrospectively analyzed, and the dynamic changes of gallbladder polyps were assessed. A comparative analysis was then conducted between those who had gallbladder polyps (the gallbladder polyps group, n=1 149) and those who had no gallbladder polyps (the control group, n=18 243). The occurrence, changes and disappearance of gallbladder polyps shown on multiple untrasonographic examinations were compared. Results:The patterns of changes of gallbladder polyps showed that the proportions of patients with gallbladder polyps which were stable in size ( n=1 149, 52.1%) were greater than those who had new appearance of gallbladder polyps ( n=797, 36.2%), and these 2 groups of patients were having higher proportions than those who had disappearance of gallbladder polyps ( n=258, 11.7%). The largest proportion of gallbladder polyps were found in middle-aged people, and new polyps were mainly found in the age group of 30.0-59.0 years. The peak of gallbladder polyps incidence was after age 60. There were significant differences in age, male, blood glucose, total cholesterol, low density lipoprotein (LDL), and diastolic blood pressure between the study and the control groups (all P<0.05). Multivariate analysis showed that age ( OR=1.152), male ( OR=1.407) and LDL ( OR=1.656) were independent risk factors of gallbladder polyp formation. Conclusions:The annual incidence of gallbladder polyps was 9.7‰. Gallbladder polyps were more commonly found in middle age, and the incidence of gallbladder polyps was increasing. Gallbladder polyps could disappear. However, with increase in initial diameter of gallbladder polyps, the probability of disappearance decreased. Age, male gender and elevated LDL were independent risk factors of gallbladder polyps formation.

Objective:To evaluate the feasibility and prognostic features of surgical resection of locally recurrent renal cell carcinoma patients after initial radical or partial nephrectomy.Methods:The data of the patients treated for postoperative locally recurrent renal cell carcinoma from Jan 2005 to Dec 2019 in the Department of Urology, Peking University First Hospital, were analyzed retrospectively. Postoperative locally recurrent of renal cell carcinoma is defined as disease recurring in the remnant kidney, renal fossa, adjacent abdomen, ipsilateral adrenal or retroperitoneal lymph nodes. Secondary surgery includes radical nephrectomy, partial nephrectomy, recurrent mass resection or radiofrequency ablation. The adjuvant therapy and prognostic information after secondary surgery were obtained and analyzed. Ninety-five patients were included in the study, with the median age of 56 years old (14-82 years old). The overall median recurrent interval was 25 months (2-164 months) and the median recurrent interval for radical and partial nephrectomy patients were 30 months and 25 months, with no significant difference. As for the secondary surgery, 63 patients underwent open surgery, 22 patients with laparoscopic surgery and 10 patients with radiofrequency ablation therapy.Result:The median operation time of secondary surgery was 148 minutes (35-330 minutes) and median intraoperative blood loss of 150 ml (20-3 000 ml). There were 8 cases of stage Ⅰ or stage Ⅱ postoperative complication, including wound infection and anemia. A stage Ⅲ complication of postoperative hematuria occured. The patient underwent renal artery embolization to control the hematuria. Eight patients suffered local recurrence and 10 patients experienced distant metastasis after the secondary surgery. During the follow-up, 6 patients died. The overall 3-year, 5-year disease free survival rate was 85.8% and 53.3%, respectively. The median survival time of patients with remnant kidney, renal fossa, and adjacent abdomen recurrence was 78 months, while 49 months for patients with ipsilateral adrenal and retroperitoneal lymph nodes recurrence ( P=0.141). Conclusions:With sufficient evaluation and preparation, the resection of the recurrent mass could be feasible and safe. With completion resection and negative surgery margin, patients could obtain relative long-term survival.

Objective:To investigate the effect of interleukin (IL)-37 on the immune function of regulatory T cells (Treg) in sepsis.Methods:TTregs were isolated and purified from the spleen of C57BL/6J mice and cultured in vitro. The cells were divided into the control group, lipopolysaccharide (LPS) group, IL-37 group, LPS+IL-37 group, LPS+3-Methyladenine (3-MA) group, LPS+3-MA+IL-37 group, LPS+Rapamaycin group, and LPS+Rapamaycin+IL-37 group. Culture supernatants and cells were collected, respectively, after cell culture for 24, 48, and 72 h. The secretion of IL-10 and TGF-β by Tregs was detected by ELISA, expressions of forkhead wing-link transcription factor (Foxp3) and cytotoxic T lymphocytes antigen 4 (CTLA-4) were measured by flow cytometry. Formation and number of autophagosomes were observed by transmission electron microscope. Western blot was used to determine expressions of autophagy associated proteins, including LC3I/II and Beclin1. Cecal ligation and puncture (CLP) was used to construct septic mice model, and the differences in survival rates between the groups were recorded and compared.Results:IL-37 was given to Tregs at 24, 48, and 72 h after LPS stimulation. The function of Treg was significantly enhanced after 72 h of synergistically stimulation by both LPS and IL-37. After stimulation with LPS and IL-37, the formation of autophagosomes in Tregs was obviously increased under observation of transmission electron microscopy. Pretreatment with autophagy agonist Rapamycin and autophagy inhibitor 3-MA was applied for altering the activity of cell autophagy. It was noticed that immune function of Treg was significantly decreased in the 3-MA group compared with the control group, while it was enhanced in the Rapamycin group. Secretion of TGF-β in the 3-MA group presented with significant reduction, which showed a marked increase in the Rapamycin group. However, no significant differences were found in IL-10 levels among various groups. Administration of IL-37 improved the survival rates of septic mice, which was much more efficient by treatment prior to the onset of sepsis.Conclusions:IL-37 appears to be capable of augmenting immune function of Tregs in an autophagy-dependent pathway, which might contribute to maintaining homeostasis of immune response in the setting of sepsis, and further improves the survival and prognosis of septic mice.

Objective: To assess the diagnostic rate, safety and clinical application of percutaneous renal masses biopsy for advanced renal cell carcinoma patients.Methods: In this retrospective study, we collected the data of renal masses from the patients who underwent renal masses biopsy under ultrasound from April 2001 to December 2014 in Peking University First Hospital.A total of 75 patients who were undiagnosed or diagnosed with advanced renal cell carcinoma by the imageological method were enrolled in this study.The patient and lesion characteristics such as tumor size, pathology of tumor, histologic subtype, pathological grade, biopsied location and biopsied cores were recorded and analyzed.Results: Among all the 75 patients, biopsy was diagnostic in 64 cases (85.3%) and non-diagnostic in 11 cases (14.7%).Of the 64 diagnostic biopsies, 60 were malignant, including 37 (61.7%) renal cell carcinoma (RCC), 13 (21.7%) urothelial carcinoma and 10 (16.7%) other malignant masses.Of all the RCC subjects, 24 suffered from clear cell RCC, 5 papillary RCC, 3 collecting duct carcinomas, 1 unclassified RCC and 4 unknown subtypes.The 11 non-diagnostic biopsied samplings included inflammatory, blood and extrarenal tissue and normal renal tissue.The proportion of collecting duct carcinoma in RCC was 10.8% and the proportion of squamous carcinoma in urothelial carcinoma was 23.1%, which were both higher than the previous research findings.For the male and female groups, non-diagnostic yields were 6.5% and 30.4%, respectively (P=0.022).Of all the 75 patients, 13 renal cell carcinoma patients underwent the surgical treatment and got the results of postoperative pathology.Comparing preoperative biopsy pathological diagnosis with postoperative pathological diagnosis, we found the diagnostic correct rates for benign and malignant lesions, pathological subtype and pathological grade were 100%, 81.8% and 60%, respectively.Mild macroscopic hematuria occurred in 1 case after RMB and there were no serious complications in all the cases.Conclusion: Percutaneous renal masses biopsy under ultrasound with a high diagnostic rate which can define the histologic subtype of renal cell carcinoma.With targeted therapy, more and more patients whose evaluation suggests local advanced disease or metastatic tumors adopt renal tumor biopsy to define the histologic subtype, which could avoid unnecessary surgical treatment.

Objective To evaluate the impact of preoperative renal artery embolization in renal cell carcinoma patients with venous tumor thrombus.Methods A total of 249 RCC patients with venous tumor thrombus underwent radical nephrectomy and thrombectormy in our hospital.Seventy-four patients received preoperative renal artery embolization while other 175 patients did not.The related items were analyzed.The tumor thrombus level was divided into 5 groups with American Mayo clinic classification system.Considering the significant difference in tumor situation and treatment strategies, we took the hepatic vein as a cut-off line, dividing patients into two subgroups, the early and advanced tumor thrombus groups.There were 208 patients in the early tumor thrombus group and 41 patients in the advanced group.The related items were analyzed respectively.Results Patients in the embolization group tended to have larger tumors and higher percentage of advanced tumor thrombus.For all patients, the embolization group had longer operation time [(4.8 ±2.1) h vs.(4.1 ±2.2) h ,P <0.05] and greater median blood loss (900ml vs 500 ml,P <0.05), compared to the non-embolization patients, and RAE did not show benefits on perioperative outcomes seemingly.However, subgroup analysis of patients with advanced tumor thrombus ( above hepatic vein) , in spite of the larger size of tumor, preoperative RAE showed significant benefits on reducing operation time [(7.0 ±1.7)h vs.(8.2 ±1.8)h, P<0.05)] and intraoperative blood loss (2 000 ml vs.3 000 ml, P<0.05) and decreasing blood transfusion (1 525 ml vs.2 050 ml ,P>0.05).Conclusion Preoperative RAE may be more appropriate for patients with advanced tumor thrombus because of its benefits in reducing operation time, intraoperative blood loss and elevating the operative security.

Objective Explore the individual difference in carbon monoxide (CO) poisoning and analyze whether females were be more resistant to CO poisoning.Methods We collected 207 cases of CO poisoning deaths, and then we analyzed the Carbonyl Hemoglobin (COHb) results sorted by different sources of CO.Results The source of CO had significant impact on the fatal COHb level, but gender was not significant in affecting COHb level. In addition, it is possible that children and elders were less resistant to COHb than adults.

OBJECTIVETo evaluate the safety and efficacy of "ring suture technique" during partial nephrectomy in the management of renal cell cancer located in renal hilar.

METHODSThe data of 31 patients with renal cell cancer located in renal hilar who underwent partial nephrectomy from January 2009 to January 2014 in Peking University First Hospital were collected. Of the 31 patients, 21 were male, 10 were female ranging from 48 to 75 years (average age of (58±13) years). "Ring suture technique" was adopted in all the operation which were performed following the same steps: a ureteral catheter was placed into ipsilateral ureter pre-operatively; renal artery was clamped first and after 30 s renal vein was also clamped; tumor was resected from kidney; the edge of renal parenchyma was sutured continuously; methylthioninium Chloride solution was injected into pelvis retrograde through the ureteral catheter, and the collecting system was repaired if needed; remove renal vein clamp and then the renal artery, repair any injury of the vascular when necessary. The renal ischemic time, blood loss and postoperative complications were analyzed retrospectively.

RESULTSRetroperitoneal laparoscopic surgery and laparotomy were performed in 14 patients and 17 patients each. Average maximum diameter of tumor was (3.3±1.2) cm, and median R.E.N.A.L.nephrometry score was 8 (7-11). Average ischemic time was (24±8) minutes (18.4-37.5 minutes). Median blood loss during operation was 130 ml (90-350 ml), average blood loss was (125±45) ml, and there was no uncontrollable massive bleeding. Radical nephrectomy was adopted in 1 case due to tumor embolus in branch of renal vein. All patients had good recovery after surgery without complications such as hemorrhage, urine leakage or renal atrophy during the first 3 months after surgery.

CONCLUSIONRing suture technique is a safe and effective method in the management of renal hilar cancer during partial nephrectomy.

Aged ; Female ; Humans ; Kidney ; surgery ; Kidney Neoplasms ; surgery ; Laparoscopy ; Male ; Middle Aged ; Nephrectomy ; Prostheses and Implants ; Renal Artery ; Retroperitoneal Space ; surgery ; Retrospective Studies ; Suture Techniques

Objective To investigate healthcare-associated infection(HAI)in patients in a cancer hospital,provide reference for controlling HAI in cancer patients,and guide rational use of antimicrobial agents.Methods Clinical data of patients in a cancer hospital between August 2006 and July 2012 were analyzed retrospectively.Results The incidence of HAI case was 1 .53% (2 060/134 389),and annual incidence showed a downward trend.The main in-fection site was lower respiratory tract (46.46%,n=957),followed by bloodstream (15.63%,n=322),abdominal and pelvic (14.03%,n=289).The main pathogens were Pseudomonas aeruginosa (16.16%,n=350),Staphylo-coccus aureus (9.97%,n=216),Klebsiella pneumoniae (9.79%,n=212),Escherichia coli (9.65%,n=209), and Candida albicans (6.51 %,n=141 ).Gram-negative bacilli,including Klebsiella pneumoniae and Escherichia coli ,were sensitive to carbapenems and β-lactamase inhibitors.Conclusion Lower respiratory tract is the major HAI site in patients with cancer,and gram-negative bacteria are the main pathogens.Carbapenems andβ-lactamase inhibitors are recommended for the empirical treatment of HAI in cancer patients.