3.Analysis of microsatellite instability in endometrial cancer: The significance of minimal microsatellite shift.
Li LIANG ; Xin LI ; Lin NONG ; Ying DONG ; Ji Xin ZHANG ; Dong LI ; Ting LI
Journal of Peking University(Health Sciences) 2023;55(2):254-261
		                        		
		                        			OBJECTIVE:
		                        			To analyze the differences and characteristics of microsatellite instability (MSI) in endometrial cancer (EMC), by using colorectal cancer (CRC) as control.
		                        		
		                        			METHODS:
		                        			In the study, 228 cases of EMC were collected. For comparative analysis, 770 cases of CRC were collected. Mismatch repair (MMR) expression was detected by immunohistochemistry (IHC), and microsatellite instability (MSI) was analyzed by PCR and capillary electrophoresis fragment analysis (MSI-PCR). MSI-PCR was detected using five mononucleotide repeat markers: BAT-25, BAT-26, NR-21, NR-24, and MONO-27.
		                        		
		                        			RESULTS:
		                        			In EMC, we found 27.19% (62/228) of deficient mismatch repair (dMMR) using IHC, significantly higher than CRC (7.79%, 60/770). Meanwhile, subclonal expression of MMR protein was found in 4 cases of dMMR-EMC and 2 cases of dMMR-CRC. According to the criteria of major micro-satellite shift, we found 16.23% (37/228) of MSI-high (MSI-H), 2.63% (6/228) of MSI-low (MSI-L), and 81.14% (185/228) of microsatellite stability (MSS) in EMC using MSI-PCR. The discor-dance rate between MMR-IHC and MSI-PCR in EMC was 11.84% (27/228). In CRC, we found 8.05% (62/770) of MSI-H, 0.13% (1/770) of MSI-L, and 91.82% (707/770) of MSS. The discordance rate between MMR-IHC and MSI-PCR in CRC was only 0.52% (4/770). However, according to the criteria of minimal microsatellite shift, 12 cases of EMC showed minimal microsatellite shift including 8 cases of dMMR/MSS and 4 cases of dMMR/MSI-L and these cases were ultimately evaluated as dMMR/MSI-H. Then, 21.49% (49/228) of EMC showed MSI-H and the discordance rate MMR-IHC and MSI-PCR in EMC decreased to 6.58% (15/228). No minimal microsatellite shift was found in CRC. Compared with EMC group with major microsatellite shift, cases with minimal microsatellite shift showed younger age, better tumor differentiation, and earlier International Federation of Gynecology and Obstetrics (FIGO) stage. There were significant differences in histological variant and FIGO stage between the two groups (P < 0.001, P=0.006).
		                        		
		                        			CONCLUSION
		                        			EMC was more prone to minimal microsatellite shift, which should not be ignored in the interpretation of MSI-PCR results. The combined detection of MMR-IHC and MSI-PCR is the most sensitive and specific method to capture MSI tumors.
		                        		
		                        		
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Microsatellite Instability
		                        			;
		                        		
		                        			Colorectal Neoplasms
		                        			;
		                        		
		                        			Microsatellite Repeats
		                        			;
		                        		
		                        			Endometrial Neoplasms
		                        			;
		                        		
		                        			DNA Mismatch Repair
		                        			
		                        		
		                        	
4.Analysis of the new WHO guideline to accelerate the progress towards elimination of schistosomiasis in China.
Zhao Yu GUO ; Jia Xin FENG ; Li Juan ZHANG ; Yi Biao ZHOU ; Jie ZHOU ; Kun YANG ; Yang LIU ; Dan Dan LIN ; Jian Bing LIU ; Yi DONG ; Tian Ping WANG ; Li Yong WEN ; Min Jun JI ; Zhong Dao WU ; Qing Wu JIANG ; Song LIANG ; Jia Gang GUO ; Chun Li CAO ; Jing XU ; Shan LÜ ; Shi Zhu LI ; Xiao Nong ZHOU
Chinese Journal of Schistosomiasis Control 2022;34(3):217-222
		                        		
		                        			
		                        			On February 2022, WHO released the evidence-based guideline on control and elimination of human schistosomiasis, with aims to guide the elimination of schistosomiasis as a public health problem in disease-endemic countries by 2030 and promote the interruption of schistosomiasis transmission across the world. Based on the One Health concept, six evidence-based recommendations were proposed in this guideline. This article aims to analyze the feasibility of key aspects of this guideline in Chinese national schistosomiasis control program and illustrate the significance to guide the future actions for Chinese national schistosomiasis control program. Currently, the One Health concept has been embodied in the Chinese national schistosomiasis control program. Based on this new WHO guideline, the following recommendations are proposed for the national schistosomiasis control program of China: (1) improving the systematic framework building, facilitating the agreement of the cross-sectoral consensus, and building a high-level leadership group; (2) optimizing the current human and livestock treatments in the national schistosomiasis control program of China; (3) developing highly sensitive and specific diagnostics and the framework for verifying elimination of schistosomiasis; (4) accelerating the progress towards elimination of schistosomiasis and other parasitic diseases through integrating the national control programs for other parasitic diseases.
		                        		
		                        		
		                        		
		                        			China/epidemiology*
		                        			;
		                        		
		                        			Disease Eradication
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Public Health
		                        			;
		                        		
		                        			Schistosomiasis/prevention & control*
		                        			;
		                        		
		                        			World Health Organization
		                        			
		                        		
		                        	
6.Effects of Incretin-based Therapies on Weight-related Indicators among Patients with Type 2 Diabetes: A Network Meta-analysis.
Lu XU ; Shu Qing YU ; Le GAO ; Yi HUANG ; Shan Shan WU ; Jun YANG ; Yi Xin SUN ; Zhi Rong YANG ; San Bao CHAI ; Yuan ZHANG ; Li Nong JI ; Feng SUN ; Si Yan ZHAN
Biomedical and Environmental Sciences 2020;33(1):37-47
		                        		
		                        			Objective:
		                        			To evaluate the effects of incretin-based therapies on body weight as the primary outcome, as well as on body mass index (BMI) and waist circumference (WC) as secondary outcomes.
		                        		
		                        			Methods:
		                        			Databases including Medline, Embase, the Cochrane Library, and clinicaltrials.gov (www.clinicaltrials.gov) were searched for randomized controlled trials (RCTs). Standard pairwise meta-analysis and network meta-analysis (NMA) were both carried out. The risk of bias (ROB) tool recommended by the Cochrane handbook was used to assess the quality of studies. Subgroup analysis, sensitivity analysis, meta-regression, and quality evaluation based on the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) were also performed.
		                        		
		                        			Results:
		                        			A total of 292 trials were included in this study. Compared with placebo, dipeptidyl-peptidase IV inhibitors (DPP-4Is) increased weight slightly by 0.31 kg [95% confidence interval ( ): 0.05, 0.58] and had negligible effects on BMI and WC. Compared with placebo, glucagon-like peptide-1 receptor agonists (GLP-1 RAs) lowered weight, BMI, and WC by -1.34 kg (95% : -1.60, -1.09), -1.10 kg/m (95% : -1.42, -0.78), and -1.28 cm (95% : -1.69, -0.86), respectively.
		                        		
		                        			Conclusion
		                        			GLP-1 RAs were more effective than DPP-4Is in lowering the three indicators. Overall, the effects of GLP-1 RAs on weight, BMI, and WC were favorable.
		                        		
		                        		
		                        		
		                        	
7.Type 1 diabetes induced by immune checkpoint inhibitors.
Rui ZHANG ; Xiao-Ling CAI ; Liu LIU ; Xue-Yao HAN ; Li-Nong JI
Chinese Medical Journal 2020;133(21):2595-2598
		                        		
		                        			
		                        			With the increasing use of immune checkpoint inhibitors (ICI) including anti-cytotoxic T lymphocyte associated antigen-4 (CTLA-4) and anti-programmed cell death-1 (PD-1) in cancers, ICI-induced type 1 diabetes has been reported throughout the world. In this review, we aim to summarize the characteristics of this disease and discuss the mechanism of it. As an immune-related adverse event, type 1 diabetes developed after the administration of anti-PD-1 or anti-PD-ligand 1 (PD-L1) in the combination with or without anti-CTLA-4. It usually presented with acute onset, and 62.1% of the reported cases had diabetic ketoacidosis. Only a third of them had positive autoantibodies associated with type 1 diabetes. Susceptible HLA genotypes might be associated. T-cell-stimulation by blocking of the interaction of PD-1 and PD-L1 in pancreatic β cells was the main mechanism involved in the pathology. Insulin was the only effective treatment of ICI-induced type 1 diabetes. In conclusions, ICI-induced type 1 diabetes is a potentially life-threating adverse event after the immunotherapy of cancers. Screening and early recognition is important. Further investigation of the mechanism may help to better understand the pathology of type 1 diabetes.
		                        		
		                        		
		                        		
		                        			CTLA-4 Antigen
		                        			;
		                        		
		                        			Diabetes Mellitus, Type 1/chemically induced*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Immune Checkpoint Inhibitors
		                        			;
		                        		
		                        			Immunologic Factors/therapeutic use*
		                        			;
		                        		
		                        			Immunotherapy/adverse effects*
		                        			;
		                        		
		                        			Neoplasms/drug therapy*
		                        			
		                        		
		                        	
8.Prevalence of soil - borne nematode infections among residents living in urban/town areas of China in 2015
Hui-Hui ZHU ; Chang-Hai ZHOU ; Ting-Jun ZHU ; Ji-Lei HUANG ; Men-Bao QIAN ; Ying-Dan CHEN ; Shi-Zhu LI ; Xiao-Nong ZHOU
Chinese Journal of Schistosomiasis Control 2020;32(5):476-482
		                        		
		                        			
		                        			 Objective To understand the prevalence of soil-borne nematode infections among residents living in urban/town areas of China, so as to provide insights into the control and elimination of soil-borne nematodiasis. Methods A total of 5 epidemic areas were classified in China according to the prevalence of human Clonorchis sinensis infections captured from the 2014–2015 national survey on major human parasitic diseases in China, and the total sample size was estimated according to the binomial distribution and Poisson’s distribution. Then, the total sample size was allocated proportionally to each province (autonomous region, municipality) of China based on the percentage of residents living in urban and town areas, and the number of survey sites in each province (autonomous region, municipality) was proportionally assigned according to the percentages of residents living in urban and town areas. Then, stratified sampling was performed at county, township and community levels according to the number of sampling sites in each province (autonomous region, municipality), and the survey site (community) was defined as the smallest sampling unit. All permanent residents in the survey sites were selected as the study subjects, and their stool samples were collected for identification and counting of parasite egg using a Kato-Katz technique. The prevalence and intensity of each parasite species were calculated. Results From 2014 to 2015, among the 133 231 residents detected in 31 provinces (autonomous regions, municipalities) of China, the overall prevalence of soil-borne nematode infections was 1.23% (1 636/133 231), and the prevalence rates of hookworm, Ascaris lumbricoides and Trichuris trichiura infections were 0.77% (1 032/133 231), 0.32% (426/133 231) and 0.17% (224/133 231), respectively. The highest prevalence of soil-borne nematode infections was seen in Jiangxi (4.03%, 82/2 034) and Chongqing (4.03%, 524/13 012), followed by in Hainan (3.47%, 72/2 075). The prevalence of soilborne nematode infections was 1.07% (662/62 139) in men and 1.37% (974/71 092) in women, and the greatest prevalence was found in residents at ages of 65 to 70 years (2.56%, 219/8 569). With regard to occupations and education levels, herdsmen (2.47%, 2/81) and illiterate residents (3.33%, 226/6 795) were found to have the highest prevalence of soil-borne nematode infections, respectively. In addition, mild infections were predominantly identified in hookworm-, A. lumbricoides- and T. trichiura-infected individuals (all > 90%). Conclusions The overall prevalence of soil-borne nematodiasis remains low in urban and town areas of China; however, human infections are widespread. According to the epidemiological features, health education combined with deworming are recommended to reduce the prevalence of soil-borne nematode infections among residents living in urban and town areas of China. 
		                        		
		                        		
		                        		
		                        	
10.Endoscopic combined ultrasound-guided access vs. ultrasound-guided access in endoscopic combined intrarenal surgery.
Ning KANG ; Yi Hang JIANG ; Yu Guang JIANG ; Li Yang WU ; Ji Qing ZHANG ; Yi Nong NIU ; Jun Hui ZHANG
Journal of Peking University(Health Sciences) 2020;52(4):692-696
		                        		
		                        			OBJECTIVE:
		                        			To compare the outcomes of endoscopic combined ultrasound-guided access (EUGA) with the conventional ultrasound-guided access (UGA) to achieve percutaneous renal access in endoscopic combined intrarenal surgery (ECIRS).
		                        		
		                        			METHODS:
		                        			A retrospective review of 53 patients undergoing ECIRS to treat upper urinary tract calculi between January 2017 and October 2019 was con-ducted. All of the cases were of complex upper urinary tract stones larger than 2 cm in diameter. The com-plex stone situations, such as multiple renal calyces calculi or staghorn calculi necessitated ECIRS. Under general anesthesia, the patients were placed in the galdakao-modified supine valdivia (GMSV) position, thus allowing both antegrade and retrograde accesss. The patients were divided to UGA and EUGA groups according to the protocol of achieving percutaneous renal access. In 28 cases, endoscopic combined ultrasound-guided accesss were obtained. Puncture and dilation were performed under direct flexible ureteroscopic visualization, while percutaneous renal access of 25 cases were performed with the conventional technique employing ultrasound guidance. Demographic and perioperative information, such as stone burden, presence of hydronephrosis and number of calyces involved was compared. Primary outcomes included total operative time, renal access time, repeat puncture, hemoglobin level, perioperative complications, and stone-free rate.
		                        		
		                        			RESULTS:
		                        			No major intra-operative complication was recorded in all the 53 ECRIS. No significant difference was observed between the groups in age and gender. There was no significant difference in body mass index[BMI (29.21±3.14) kg/m2 vs.(28.53±2.56) kg/m2], stone burden (37.68±6.89) mm vs. (35.53±6.52) mm, number of calyces involved 2.72±0.68 vs. 2.86±0.71, presence of hydronephrosis (56.0% vs. 46.4%), total operative time (93.0±12.2) min vs. (96.8±14.2) min, hemoglobin level reduction (6.56±2.16) g/L vs. 97.54±2.64) g/L, stone-free rate (92.0% vs. 92.8%), hospital stay (5.52±0.59) d vs. (5.64±0.62) d, perioperative complication rate (8.0% vs. 7.2%). Two patients in EUGA group experienced perioperative complications (one urinary tract infection and one hematuria) while two patients in UGA group experienced perioperative urinary tract infection. None in both groups received blood transfusion. The patients undergoing EUGA had shorter renal access time [(4.0±0.7) min vs. (6.8±2.6) min, P < 0.01] and less repeat puncture (0 vs. 4 cases, P < 0.05).
		                        		
		                        			CONCLUSION
		                        			EUGA is an optimal technique to establish percutaneous renal access in ECIRS, which minimizes access time and repeated procedures.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Kidney Calculi
		                        			;
		                        		
		                        			Nephrostomy, Percutaneous
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Ultrasonography, Interventional
		                        			;
		                        		
		                        			Ureteroscopy
		                        			
		                        		
		                        	
            
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