1.Impact of cecal ligation and puncture-induced sepsis on the proliferation and differentiation of intestinal stem cells
Xuepeng ZHANG ; Jianlei FU ; Maoxia LIU ; Geng ZHANG ; Tong QIU ; Jiangyuan ZHOU ; Zixin ZHANG ; Xue GONG ; Qinyi FU ; Yi JI ; Siyuan CHEN
Chinese Critical Care Medicine 2024;36(5):496-502
Objective:To analyze the impact of cecal ligation and puncture (CLP)-induced sepsis on the proliferation and differentiation of intestinal epithelial cells.Methods:① Animal experiment: sixteen male C57BL/6 mice were divided into sham operation group (Sham group) and CLP-induced sepsis model group (CLP group) by random number table method, with 8 mice in each group. After 5 days of operation, the jejunal tissues were taken for determination of leucine-rich-repeat-containing G-protein-coupled receptor 5 (LGR5) and intestinal alkaline phosphatase (IAP) by polymerase chain reaction (PCR). The translation of LGR5 was detected by Western blotting. The expression of proliferating cell nuclear antigen (Ki67) was analyzed by immunohistochemistry. IAP level was detected by modified calcium cobalt staining and colorimetry. Immunofluorescence staining was used to detect the expression of Paneth cell marker molecule lysozyme 1 (LYZ1) and goblet cell marker molecule mucin 2 (MUC2). ② Cell experiment: IEC6 cells in logarithmic growth stage were divided into blank control group and lipopolysaccharide (LPS) group (LPS 5 μg/mL). Twenty-four hours after treatment, PCR and Western blotting were used to analyze the transcription and translation of LGR5. The proliferation of IEC6 cells were detected by 5-ethynyl-2'-deoxyuridine (EdU) staining. The transcription and translation of IAP were detected by PCR and colorimetric method respectively.Results:① Animal experiment: the immunohistochemical results showed that the positive rate of Ki67 staining in the jejunal tissue of CLP group was lower than that of Sham group [(41.7±2.5)% vs. (48.7±1.4)%, P = 0.01]. PCR and Western blotting results showed that there were no statistical differences in the mRNA and protein expressions of LGR5 in the jejunal tissue between the CLP group and Sham group (Lgr5 mRNA: 0.7±0.1 vs. 1.0±0.2, P = 0.11; LGR5/β-actin: 0.83±0.17 vs. 0.68±0.19, P = 0.24). The mRNA (0.4±0.1 vs. 1.0±0.1, P < 0.01) and protein (U/g: 47.3±6.0 vs. 73.1±15.3, P < 0.01) levels of IAP in the jejunal tissue were lower in CLP group. Immunofluorescence saining analysis showed that the expressions of LYZ1 and MUC2 in the CLP group were lower than those in the Sham group. ②Cell experiment: PCR and Western blotting results showed that there was no significant difference in the expression of LGR5 between the LPS group and the blank control group (Lgr5 mRNA: 0.9±0.1 vs. 1.0±0.2, P = 0.33; LGR5/β-actin: 0.71±0.18 vs. 0.69±0.04, P = 0.81). The proliferation rate of IEC6 cells in the LPS group was lower than that in the blank control group, but there was no significant difference [positivity rate of EdU: (40.5±3.8)% vs. (46.5±3.6)%, P = 0.11]. The mRNA (0.5±0.1 vs. 1.0±0.2, P < 0.01) and protein (U/g: 15.0±4.0 vs. 41.2±10.4, P < 0.01) of IAP in the LPS group were lower than those in the blank control group. Conclusion:CLP-induced sepsis inhibits the proliferation and differentiation of intestinal epithelial cells, impairing the self-renewal ability of intestinal epithelium.
2.Analysis of WHO Global Patient Safety Report 2024 and related medical device issues
Zhiyong LI ; Ying ZHANG ; Zeshi CUI ; Wei SONG ; Xiaorui ZHAO ; Peng NING ; Xiaolan QIU ; Zixin KANG
China Medical Equipment 2024;21(8):198-204
Based on the perspective of medical equipment safety culture,analyze the Global Patient Safety Report 2024 released by the World Health Organization(WHO)on May 30,and extract patient safety elements related to medical devices.Propose to initiate action plan for patient safety related to medical devices and discuss the pathway and measures to further ensure patient safety and strengthen safety management in the clinical use of medical devices,in conjunction with promoting high-quality development of hospitals.
3.Analysis of clinical diagnosis and treatment of complex lymphatic anomalies
Tong QIU ; Jiangyuan ZHOU ; Xue GONG ; Kaiying YANG ; Zixin ZHANG ; Yuru LAN ; Xuepeng ZHANG ; Zilong ZHOU ; Geng ZHANG ; Jianlei FU ; Siyuan CHEN ; Yi JI
Chinese Journal of Plastic Surgery 2023;39(11):1167-1174
Objective:To analyze the clinical features, differential diagnosis, treatment and prognosis of complex lymphatic malformations.Methods:The clinical data of patients with complex lymphatic malformation were retrospectively analyzed from April 2010 to April 2022 in the Multidisciplinary Outpatient Department of the Vascular Disease Team of West China Hospital, Sichuan University. All patients were diagnosed with complex lymphatic malformation after consultation with multidisciplinary experts in pediatric surgery, radiology, plastic surgery, pathology, rehabilitation and other departments. The clinical manifestations, blood routine, coagulation function, magnetic resonance imaging and treatment methods of the patients were analyzed. According to the follow-up and disease results, the patients were divided into improvement, stability, progress and death.Results:A total of 18 patients with complex lymphatic malformations were included in the study, including 6 males and 12 females. The age of first diagnosis ranged from 1 month to 29 years old, and the median age was 2.5 years old. Patients were followed up and treated for 0.4 to 12.0 years, with an average follow-up of 3.5 years. Ten patients had pleural and pericardial effusion; 15 patients had visceral involvement which showed multifocal changes in imaging examinations; 9 cases were accompanied by bone destruction, which in Gorham-Stout disease patients broke through the cortex while in generalized lymphatic anomalies it did not; 14 patients had various degrees of coagulation abnormalities, of which 8 patients with severe coagulation dysfunction were all diagnosed as kaposiform lymphangiomatosis. Of the 18 patients, one kaposiform lymphangiomatosis patient died; six patients progressed; eight patients were stable; and three patients improved.Conclusion:The clinical characteristics of patients with complex lymphatic malformations are systemic, diverse and complex. The clinical symptoms of patients with diffuse lymphatic malformation accompanied by involvement of bone and multiple internal organs, chest and abdominal effusion, and coagulation dysfunction should be considered as complex lymphatic malformation. However, due to overlapping clinical characteristics of each subtypes, it is difficult to distinguish patients with complex lymphatic malformation, and the curative effect and prognosis are poor. Precision targeted drugs are the future research direction for the treatment of such diseases.
4.Analysis of clinical diagnosis and treatment of complex lymphatic anomalies
Tong QIU ; Jiangyuan ZHOU ; Xue GONG ; Kaiying YANG ; Zixin ZHANG ; Yuru LAN ; Xuepeng ZHANG ; Zilong ZHOU ; Geng ZHANG ; Jianlei FU ; Siyuan CHEN ; Yi JI
Chinese Journal of Plastic Surgery 2023;39(11):1167-1174
Objective:To analyze the clinical features, differential diagnosis, treatment and prognosis of complex lymphatic malformations.Methods:The clinical data of patients with complex lymphatic malformation were retrospectively analyzed from April 2010 to April 2022 in the Multidisciplinary Outpatient Department of the Vascular Disease Team of West China Hospital, Sichuan University. All patients were diagnosed with complex lymphatic malformation after consultation with multidisciplinary experts in pediatric surgery, radiology, plastic surgery, pathology, rehabilitation and other departments. The clinical manifestations, blood routine, coagulation function, magnetic resonance imaging and treatment methods of the patients were analyzed. According to the follow-up and disease results, the patients were divided into improvement, stability, progress and death.Results:A total of 18 patients with complex lymphatic malformations were included in the study, including 6 males and 12 females. The age of first diagnosis ranged from 1 month to 29 years old, and the median age was 2.5 years old. Patients were followed up and treated for 0.4 to 12.0 years, with an average follow-up of 3.5 years. Ten patients had pleural and pericardial effusion; 15 patients had visceral involvement which showed multifocal changes in imaging examinations; 9 cases were accompanied by bone destruction, which in Gorham-Stout disease patients broke through the cortex while in generalized lymphatic anomalies it did not; 14 patients had various degrees of coagulation abnormalities, of which 8 patients with severe coagulation dysfunction were all diagnosed as kaposiform lymphangiomatosis. Of the 18 patients, one kaposiform lymphangiomatosis patient died; six patients progressed; eight patients were stable; and three patients improved.Conclusion:The clinical characteristics of patients with complex lymphatic malformations are systemic, diverse and complex. The clinical symptoms of patients with diffuse lymphatic malformation accompanied by involvement of bone and multiple internal organs, chest and abdominal effusion, and coagulation dysfunction should be considered as complex lymphatic malformation. However, due to overlapping clinical characteristics of each subtypes, it is difficult to distinguish patients with complex lymphatic malformation, and the curative effect and prognosis are poor. Precision targeted drugs are the future research direction for the treatment of such diseases.
5.Comprehensive analysis of differential methylation genes in cholangiocarcinoma and identification of prognosis-related genes glucosaminyl (N-acetyl) transferase 1 and neurotrophic receptor tyrosine kinase 3
Changyu LI ; Hong SUN ; Yangyang HUANG ; Zixin HE ; Wenbin HE ; Zhangwei CHENG ; Funan QIU ; Yaodong WANG
Cancer Research and Clinic 2022;34(8):569-575
Objective:To identify and screen the differential methylation genes in patients with cholangiocarcinoma and to predict the prognosis of patients with CCA.Methods:Cholangiocarcinoma tissues and paracancerous tissues of 8 patients with cholangiocarcinoma in Fujian Provincial Hospital from October 2019 to May 2020 were selected for 850K methylation sequencing analysis to obtain differentially methylated genes. The 2018 genome-wide methylation data and clinical information of 36 patients with cholangiocarcinoma were download from The Cancer Genome Atlas (TCGA) database, the 2012 cholangiocarcinoma methylation data (GSE32879) were download from the Gene Expression Omnibus (GEO) database, and the 2018 TCGA database differential survival genomic data of overall survival (OS) and disease-free survival (DFS) of cholangiocarcinoma were download from the GEPIA2 database. The differentially methylated positions (DMP) and differentially methylated regions (DMR) results of 850K methylation sequencing analysis of submitted samples, methylated genes in TCGA and GEO databases, and cholangiocarcinoma survival genes of samples were jointly submitted for testing, multi-data set analysis was performed by the Sangerbox VENN tool, and common differentially methylated genes were obtained by intersection screening. The minimum P value method was used to determine the cut-off value of gene expression in Sangerbox, and the patients were divided into high and low expression groups of differentially methylated genes. The OS, DFS, disease-specific survival (DSS), disease-free interval (DFI) and progression-free interval (PFI) of cholangiocarcinoma patients were compared between the two groups. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses were performed. Results:A total of 121 954 DMP were identified by 850K methylation sequencing of cholangiocarcinoma tissues and paracancerous tissues of 8 patients; a total of 1 399 differentially methylated genes were identified in DMR, and the common prognosis related genes glucosaminyl (N-acetyl) transferase 1 (GCNT1) and neurotrophic receptor tyrosine kinase 3 (NTRK3) were identified by intersection identification. The expression of GCNT1 in the cholangiocarcinoma tissues was higher than that in the paracancerous tissues, and the difference was statistically significant ( P = 0.040). The expression of NTRK3 in cholangiocarcinoma tissues was higher than that in the paracancerous tissues, but the difference was not statistically significant ( P = 0.790). The minimum P value method was used to predict the prognosis of patients with cholangiocarcinoma based on the combined expression of GCNT1 and NTRK3, and the order was based on the sum of the expression levels of the two genes. When 30% of the ranking was taken as the cut-off value, the difference in DFS between the high expression group and the low expression group in cholangiocarcinoma was the most significant ( P < 0.001); there was no significant difference in OS between the two groups ( P = 0.065). The results of GO functional analysis showed that GCNT1 was involved in protein glycosylation, macromolecule glycosylation, glycosylation, glycoprotein biosynthetic process, glycoprotein metabolic process, transferase activity and transferring glycosyl groups, protein O-linked glycosylation, O-glycan processing, etc., and NTRK3 was involved in neurotrophin signaling pathway, Ras signaling pathway, EGFR tyrosine kinase inhibitor resistance, ErbB signaling pathway, phospholipase D signaling pathway, central carbon metabolism in cancer, natural killer cell mediated cytotoxicity, etc. The results of KEGG analysis showed that GCNT1 was mainly associated with system functions such as mucin-type O-glycan biosynthesis and metabolic pathways, and NTRK3 was mainly associated with cell surface receptor pathways, intracellular signal transduction, positive regulation of stimulatory responses, transmembrane receptor protein tyrosine kinase signaling pathway, enzyme-linked receptor protein signaling pathway, MAPK signaling pathway cascade and regulation, protein phosphorylation signal transduction and other system functions. Conclusions:The expressions of differentially methylated genes GCTNT1 and NTRK3 in cholangiocarcinoma have certain predictive effects on the prognosis of patients with cholangiocarcinoma.
6.Research progress in the personnel training of physiotherapists
Chenlu YANG ; Zixin QIU ; Weiwei LIU
Chinese Journal of Medical Education Research 2021;20(12):1396-1400
This paper mainly analyzes the literature on the training system of physiotherapists at home and abroad in the past 15 years, and compares the training mode, curriculum setting, current situation and application direction of physiotherapists domestic and abroad. The main findings are as follows: at present, the training objectives of Chinese physiotherapists are not clear, the training methods and teaching materials are outdated, the source of teachers are not standardized, the identification of professional qualifications are not completed, and the gap between relevant talents and market demand is large. It is suggested to establish a standardized curriculum and syllabus for physiotherapists, develop a unified industry access and qualification recognition, formulate a training mode which is in line with the national conditions, and focus on solving the imbalance between supply and demand of physiotherapists.
7.Maternal neutrophil-to-lymphocyte ratio as a prognostic biomarker for placental inflammatory response in late pregnancy.
Yuwen QIU ; Yuwen WEN ; Guang LI ; Zixin TAO ; Xinyue YAN ; Nailiang ZANG ; Mei ZHONG ; Qitao HUANG
Journal of Southern Medical University 2018;38(9):1131-1134
OBJECTIVETo investigate the association between maternal serum neutrophil-lymphocyte ratio (NLR) and placental inflammatory response (PIR) in late pregnancy.
METHODSWe retrospectively analyzed the clinical and follow-up data of 478 pregnant women undergoing routine prenatal examination and delivery in our hospital in the year 2016. According to the placental pathological results, the women were divided into PIR group (238 cases) and control group (240 cases). The levels of serum inflammatory makers including leukocytes, neutrophils, lymphocytes, C-reactive protein (CRP) and NLR were compared between the two groups to analyze the association of these markers with PIR. Multivariate analysis was performed to identify the independent risk factors of PIR. Logistic regression model was established and the area under the receiver operating characteristic curve (ROC) was used for analyzing the prognostic value of these makers in late pregnancy.
RESULTSThe areas under the curve (AUC) of leukocytes, neutrophils, lymphocytes, CRP and NLR were 0.698 (95%: 0.485-0.766), 0.716 (95%: 0.453-0.783), 0.329 (95%: 0.228-0.431), 0.725 (95%: 0.677-0.765) and 0.801 (95%: 0.742-0.856), respectively. After adjusting the confounders, multivariate logistic regression analysis showed that preterm labor (OR=2.446, 95%: 1.003-4.590), premature rupture of membranes (OR=2.304, 95%: 1.049-4.161), NLR > 7 (OR=3.268, 95%: 2.071-6.920), and CRP > 15 mg/L (OR=2.137, 95%: 1.412-8.236) were independent risk factors for PIR.
CONCLUSIONSAn increased NLR in late pregnancy can serve as an effective indicator for predicting the risk of PIR.
8.CHANGES OF ACTIVITIES OF LIPO-RELA TED ENZYMES IN VENTROMEDIAL HYPOTHALAMIC OBES E RATS AT ACUTE PHASE IN FED STATE
Zixin ZHENG ; Jihong QIU ; Junying TENG ; Rongxin ZHANG ; Changyong XUE
Acta Nutrimenta Sinica 1956;0(04):-
Objective: To investigate activities of lipo-related enzymes in ventromedial hypothalamic obese rats at acute phase in fed state. Methods: Female SD rats were divided into two groups, one group received bilateral electrolytic lesions of ventromedial hypothalamus(VMH), and another one was used as sham control. Samples of blood, livers, and subcutaneous, parametric and mesenteric adipose tissues ,and gastrocnemius were collected one week after VMH lesions and sham operations in fed state. Results: Serum insulin in VMH group was higher than that in sham group, meanwhile serum free fatty acids in VMH group were lower (P
10.EFFECTS OF TEA POLYSACCHARIDES ON GLUCOSE METABOLISM AND PEROXISOME PROLIFERATOR-ACTIVATED RECEPTOR GAMMA IN KKAy TYPE 2 DIABETIC MICE
Changyong XUE ; Jihong QIU ; Junying TENG ; Yanghong OU ; Zixin ZHENG ; Rongxin ZHANG
Acta Nutrimenta Sinica 1956;0(03):-
Objective: To investigate the effects of green tea polysaccharides (TPs) on glucose metabolism and the activity of peroxisome proliferator-activated receptor gamma (PPAR-?) in KKAy type 2 diabetic mice. Methods: Glucose tolerance test, fasting and postprandial glucose, gluconeogenesis, and insulin sensitivity were investigated in type 2 diabetic mice with orally administered TPs at the dose of 500mg/kg for 4-10 w. Effect of TPs on activity of PPAR-? was tested in vitro. Results: TPs could not only improve glucose tolerance, but also reduce fasting and postprandial blood glucose. In addition, TPs could inhibit gluconeogenesis and enhance insulin sensitivity in KKAy diabetic mice. TPs had also an effect of activating of PPAR-? with dose-response. Conclusion: TPs have beneficial effect of lowering blood glucose in KKAy type 2 diabetic mice, which may be induced by enhancing insulin sensitivity by activating of PPAR-?.

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