1.Prevalence, influencing factors, and fibrosis risk stratification of metabolic dysfunction-associated fatty liver disease in the health check-up population in Beijing, China
Haiqing GUO ; Mingliang LI ; Feng LIU ; Jing ZHANG
Journal of Clinical Hepatology 2025;41(4):643-649
ObjectiveTo identify the patients with metabolic dysfunction-associated fatty liver disease (MAFLD) among the health check-up population, and to perform stratified management of patients with the low, medium, and high risk of advanced fibrosis based on noninvasive fibrosis scores. MethodsA cross-sectional study was conducted among 3 125 individuals who underwent physical examination in Beijing Physical Examination Center from December 2017 to December 2019, and they were divided into MAFLD group with 1 068 individuals and non-MAFLD group with 2 057 individuals. According to BMI, the MAFLD group was further divided into lean MAFLD group (125 individuals with BMI<24 kg/m2) and non-lean MAFLD group (943 individuals with BMI≥24 kg/m2). Indicators including demographic data, past history, laboratory examination, and liver ultrasound were compared between groups. Fibrosis-4 (FIB-4) score, NAFLD fibrosis score (NFS), aspartate aminotransferase-to-platelet ratio index (APRI), and BARD score were calculated for the patients in the MAFLD group to assess the risk of advanced fibrosis. The independent-samples t test was used for comparison of normally distributed continuous data between two groups, and the Mann-Whitney U rank sum test was used for comparison of non-normally distributed continuous data between two groups; the chi-square test or the Fisher’s exact test was used for comparison of categorical data between groups. A logistic regression analysis was used to investigate the influence of each indicator in MAFLD. ResultsCompared with the non-MAFLD group, the MAFLD group had significantly higher age (Z=-9.758, P<0.05), proportion of male patients (χ2=137.555, P<0.05), and levels of body weight (Z=-27.987, P<0.05), BMI (Z=-32.714, P<0.05), waist circumference (Z=-31.805, P<0.05), hip circumference (Z=-26.342, P<0.05), waist-hip ratio (Z=-28.554, P<0.05), alanine aminotransferase (ALT) (Z=-25.820, P<0.05), aspartate aminotransferase (AST) (Z=-16.894, P<0.05), gamma-glutamyl transpeptidase (GGT) (Z=-25.069, P<0.05), alkaline phosphatase (Z=-12.533, P<0.05), triglyceride (Z=-27.559), total cholesterol (Z=-7.833, P<0.05), low-density lipoprotein cholesterol (LDL-C) (Z=-8.222, P<0.05), and uric acid (UA) (Z=-20.024, P<0.05), as well as a significantly higher proportion of patients with metabolic syndrome (MetS) (χ2=578.220, P<0.05), significantly higher prevalence rates of hypertension (χ2=241.694, P<0.05), type 2 diabetes (χ2=796.484, P<0.05), and dyslipidemia (χ2=369.843, P<0.05), and a significant reduction in high-density lipoprotein cholesterol (HDL-C) (Z=23.153, P<0.001). The multivariate logistic regression analysis showed that male sex (odds ratio [OR]=1.45, 95% confidence interval [CI]: 1.203 — 1.737), ALT (OR=1.05, 95%CI: 1.046 — 1.062), LDL-C (OR=1.23, 95%CI: 1.102 — 1.373), and comorbidity with MetS (OR=5.97, 95%CI: 4.876 — 7.316) were independently associated with MAFLD. Compared with the non-lean MAFLD group, the lean MAFLD group had significantly higher age (Z=3.736, P<0.05) and HDL-C (Z=2.679, P<0.05) and significant reductions in the proportion of male patients (χ2=28.970, P<0.05), body weight (Z=-14.230, P<0.05), BMI (Z=-18.188, P<0.05), waist circumference (Z=-13.451, P<0.05), hip circumference (Z=-13.317, P<0.05), ALT (Z=-4.519, P<0.05), AST (Z=-2.258, P<0.05), GGT (Z=-4.592, P<0.05), UA (Z=-4.415, P<0.05), the proportion of patients with moderate or severe fatty liver disease or MetS (χ2=42.564, P<0.05), and the prevalence rates of hypertension (χ2=12.057, P<0.05) and type 2 diabetes (χ2=3.174, P<0.05). Among the patients with MAFLD, 10 patients (0.9%) had an FIB-4 score of >2.67, 4 patients (0.4%) had an NFS score of >0.676, 8 patients (0.7%) had an APRI of >1, and 551 patients (51.6%) had a BARD score of ≥2. ConclusionThere is a relatively high prevalence rate of MAFLD among the health check-up population in Beijing, but with a relatively low number of patients with a high risk of advanced fibrosis, and such patients need to be referred to specialized hospitals for liver diseases.
2.Mitochondrial Quality Control Regulating Pathogenesis of Sarcopenia and Its Intervention by Traditional Chinese Medicine: A Review
Ting DAI ; Yan CHEN ; Changsheng GUO ; Jing GAO ; Xiaodong FENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):279-286
Sarcopenia is a clinical syndrome characterized by a decrease in skeletal muscle strength and quality, often accompanied by adverse outcomes such as falls, loss of function and weakness. The pathogenesis of sarcopenia is complex, and studies have shown that dysfunction due to impaired mitochondrial quality control is an important pathological factor in the occurrence and development. Traditional Chinese medicine(TCM) has been widely favoured for regulating mitochondrial homeostasis and preventing sarcopenia by virtue of its multi-target and multi-pathway advantages. They can play a role in the prevention and treatment of sarcopenia by regulating the mitochondrial quality control system to inhibit the occurrence of mitochondrial oxidative stress, regulate the balance of mitochondrial dynamics, inhibit mitochondrial autophagy, promote mitochondrial biosynthesis, resist the occurrence of mitochondrial apoptosis, and maintain the mitochondrial calcium and protein homeostasis. Based on this, the paper reviewed the relationship between mitochondrial quality control and sarcopenia, as well as the mechanism of TCM in intervening the mitochondrial quality control system to treat sarcopenia, in order to provide a new idea for the prevention and treatment of sarcopenia by TCM and to a theoretical basis for the clinical research on TCM intervention in sarcopenia.
3.Characteristics and lifestyles of patients with metabolic dysfunction-associated fatty liver disease based on the physical examination population
Haiqing GUO ; Mingliang LI ; Feng LIU ; Yali LIU ; Jing ZHANG
Journal of Clinical Hepatology 2025;41(6):1090-1096
ObjectiveTo screen for the patients with metabolic dysfunction-associated fatty liver disease (MAFLD) among the physical examination population, to observe the characteristics of MAFLD patients, and to compare the differences in lifestyle between the MAFLD population and the non-MAFLD population. MethodsA cross-sectional study was conducted among 6 206 individuals who underwent physical examination in a physical examination institution in Beijing from December 2015 to December 2019, and according to the new diagnostic criteria for MAFLD, the examination population was divided into MAFLD group and non-MAFLD group. Based on body mass index (BMI), the MAFLD group was further divided into lean MAFLD group (BMI<24 kg/m2) and non-lean MAFLD group (BMI ≥24 kg/m2). Related data were compared between groups, including demographic indicators, education level, work pressure, physical measurement indicators, and lifestyles such as sleep, diet, and exercise. The independent-samples t test was used for comparison of normally distributed continuous data between two groups, the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups, and the chi-square test was used for comparison of categorical data between groups. ResultsOf all individuals in this study, 1 926 (31.1%) had MAFLD and 4 280 (68.9%) did not have MAFLD. Compared with the non-MAFLD group, the MAFLD group had significantly higher age (Z=-14.459, P<0.001), proportion of male patients (χ2=72.004, P<0.001), work pressure (χ2=7.744, P=0.005), body weight (Z=-43.508, P<0.001), BMI (Z=-47.621, P<0.001), waist circumference (Z=-48.515, P<0.001), hip circumference (Z=-42.121, P<0.001), and waist-hip ratio (Z=-43.535, P<0.001), as well as a significantly lower education level (χ2=33.583, P<0.001). In terms of behavior, the MAFLD group had a significantly shorter sleep time (χ2=5.820, P=0.016) and a significantly faster eating speed (χ2=74.476, P<0.001). In terms of diet, the patients in the MAFLD group consumed more high-sodium, high-sugar, and high-calorie diets (χ2=42.667, P<0.001) and low-fiber diet (χ2=4.367, P=0.008). In terms of exercise, the MAFLD group had a significantly higher proportion of patients without exercise habits (χ2=10.278, P=0.001). Further analysis showed that there were 202 individuals (10.5%) in the lean MAFLD group and 1 724 (89.5%) in the non-lean MAFLD group. Compared with the non-lean MAFLD group, the lean MAFLD group had significantly higher age (Z=3.368, P=0.001) and education level (χ2=9.647, P=0.002) and significantly lower proportion of male patients (χ2=27.664, P<0.001), body weight (Z=-18.483, P<0.001), BMI (Z=-23.286, P<0.001), waist circumference (Z=-18.565, P<0.001), and hip circumference (Z=-18.097, P<0.001), and in terms of behavior, the non-lean MAFLD group had a significantly faster eating speed (χ2=4.549, P=0.033). ConclusionThere is a relatively high prevalence rate of MAFLD among the physical examination population in Beijing, with a higher number of people with unhealthy lifestyles compared with the non-MAFLD population.
4.Research progress of NLRP3 inflammasome inhibitors
Chen-Guang LI ; Feng-Yi MAI ; Jing-Rong LIANG ; Wen-Tao YANG ; Jie GUO ; Jun-Xiang SHU ; Li-Zu XIAO
Chinese Pharmacological Bulletin 2024;40(10):1801-1808
NLRP3 can recruit proteins such as ASC and pro-caspase1 to form NLRP3 inflammasomes after being stimulated by pathogen and danger signals in vivo,and then induce pyropto-sis and promote the inflammatory reactions to maintain the home-ostasis.However,the overactivation of NLRP3 inflammasomes is closely related to many inflammatory and autoimmune diseases in humans.Targeted inhibition of NLRP3 inflammasomes can sig-nificantly inhibit inflammation and alleviate the relative symp-toms.Therefore,it is an important research direction for treating diseases of NLRP3 inflammasome that searching for effective in-hibitors targeting NLRP3 inflammasome activation and achieving clinical transformation.This review summarizes the latest re-search progress based on the sources of NLRP3 inflammasome inhibitors.
5.Mechanism of artemisinin inhibiting malignant biological behavior of colorectal cancer cells stimulated by glucose
Yong-Na PAN ; Yue-Feng CHANG ; Jing-Jing GUO ; Yi-Li SUN ; Lan WEI ; Chun-Yan YANG ; Jin-Wang KANG
Journal of Regional Anatomy and Operative Surgery 2024;33(5):388-393
Objective To investigate the effect of artemisinin(ART)on the malignant biological behavior of colorectal cancer(CRC)cells stimulated by glucose and its mechanism.Methods The concentration gradients of 0,5,10,20,40 and 60 μmol/L of ART were used to treat the human colorectal cancer cell line SW480,and then the cell viability was detected by CCK-8.Cell apoptosis was detected by flow cytometry.Transwell was used to detect the cell migration and invasion.Western blot was used to detect the apoptosis,epithelial-mesenchymal transition(EMT)and Janus kinase 2(JAK2)/signal transducer and activator of transcription 3(STAT3)related proteins expression.Results Compared with the 0 μmol/L of ART,the viability of SW480 cells decreased under 5,10,20,40,60 μmol/L of ART treatment(P<0.05),and IC50 was 36.91 μmol/L.Therefore,the cells treated with 10,20 and 40 μmol/L of ART were as the low-dose,medium-dose and high-dose ART groups,the cells treated with 0 μmol/L of ART were as the control group,and the cells treated with 40 μmol/L of ART and 10 μmol/L of Coumermycin A1 were as the Coumermycin A1 group.Compared with the control group,the cell scratch wound healing rate,invasion ability,and expression levels of Bcl-2,N-cadherin,Vimentin,p-JAK2,and p-STAT3 in the low-dose ART group,the medium-dose ART group,and the high-dose ART group decreased obviously(P<0.05),while the apoptosis rate,and expression levels of Bax,Caspase-3 and E-cadherin increased(P<0.05).Compared with the high-dose ART group,the cell scratch wound healing rate,invasion ability,and expression levels of Bcl-2,N-cadherin,Vimentin,p-JAK2,and p-STAT3 in the Coumermycin A1 group increased obviously(P<0.05),while the apoptosis rate,and expression levels of Bax,Caspase-3 and E-cadherin decreased(P<0.05).Conclusion ART may inhibit the viability,migration,invasion and EMT of glucose-stimulated CRC cells and promote apoptosis by inhibiting the JAK2/STAT3 signaling pathway.
6.Surveillance of antifungal resistance in clinical isolates of Candida spp.in East China Invasive Fungal Infection Group from 2018 to 2022
Dongjiang WANG ; Wenjuan WU ; Jian GUO ; Min ZHANG ; Huiping LIN ; Feifei WAN ; Xiaobo MA ; Yueting LI ; Jia LI ; Huiqiong JIA ; Lingbing ZENG ; Xiuhai LU ; Yan JIN ; Jinfeng CAI ; Wei LI ; Zhimin BAI ; Yongqin WU ; Hui DING ; Zhongxian LIAO ; Gen LI ; Hui ZHANG ; Hongwei MENG ; Changzi DENG ; Feng CHEN ; Na JIANG ; Jie QIN ; Guoping DONG ; Jinghua ZHANG ; Wei XI ; Haomin ZHANG ; Rong TANG ; Li LI ; Suzhen WANG ; Fen PAN ; Jing GAO ; Lu JIANG ; Hua FANG ; Zhilan LI ; Yiqun YUAN ; Guoqing WANG ; Yuanxia WANG ; Liping WANG
Chinese Journal of Infection and Chemotherapy 2024;24(4):402-409
Objective To monitor the antifungal resistance of clinical isolates of Candida spp.in the East China region.Methods MALDI-TOF MS or molecular methods were used to re-identify the strains collected from January 2018 to December 2022.Antifungal susceptibility testing was performed using the broth microdilution method.The susceptibility test results were interpreted according to the breakpoints of 2022 Clinical and Laboratory Standards Institute(CLSI)documents M27 M44s-Ed3 and M57s-Ed4.Results A total of 3 026 strains of Candida were collected,65.33%of which were isolated from sterile body sites,mainly from blood(38.86%)and pleural effusion/ascites(10.21%).The predominant species of Candida were Candida albicans(44.51%),followed by Candida parapsilosis complex(19.46%),Candida tropicalis(13.98%),Candida glabrata(10.34%),and other Candida species(0.79%).Candida albicans showed overall high susceptibility rates to the 10 antifungal drugs tested(the lowest rate being 93.62%).Only 2.97%of the strains showed dose-dependent susceptibility(SDD)to fluconazole.Candida parapsilosis complex had a SDD rate of 2.61%and a resistance rate of 9.42%to fluconazole,and susceptibility rates above 90%to other drugs.Candida glabrata had a SDD rate of 92.01%and a resistance rate of 7.99%to fluconazole,resistance rates of 32.27%and 48.24%to posaconazole and voriconazole non-wild-type strains(NWT),respectively,and susceptibility rates above 90%to other drugs.Candida tropicalis had resistance rates of 29.55%and 26.24%to fluconazole and voriconazole,respectively,resistance rates of 76.60%and 21.99%to posaconazole and echinocandins non-wild-type strains(NWT),and a resistance rate of 2.36%to echinocandins.Conclusions The prevalence and species distribution of Candida spp.in the East China region are consistent with previous domestic and international reports.Candida glabrata exhibits certain degree of resistance to fluconazole,while Candida tropicalis demonstrates higher resistance to triazole drugs.Additionally,echinocandins resistance has emerged in Candida albicans,Candida glabrata,Candida tropicalis,and Candida parapsilosis.
7.Genetic diversity of Ixodes persulcatus in parts of Inner Mongolia
Meng-Yu CUI ; Si SU ; Li-Li XING ; Lan MU ; Rui-Juan GAO ; Qi-Qi GUO ; Hong REN ; Dong-Dong QI ; Jing-Feng YU
Chinese Journal of Zoonoses 2024;40(4):295-301
The aim of this study was to clarify the genetic diversity and population history of Ixodes persulcatus in some ar-eas of Inner Mongolia in order to provide accurate data for effective vector control programs and reveal the transmission mecha-nism.Samples were collected in 10 areas of Inner Mongolia during the active tick season(April 2021-July 2023)using the flag-dragging and manual sampling methods.The 16S rRNA and COI gene were sequenced to clarify genetic diversity of I.per-sulcatus.The positivity rates for the COI gene and 16S rRNA were 90.00%and 98.33%respectively.Overall,18 and 15 haplotypes were identified for the COI gene and 16S rRNA,respectively,with a total haplotype diversity>0.762 and total nucleotide diversity<0.005.The Tajima's values and Fu's Fs were negative for significance.A nucleotide mismatch map was shown as a single peak.The genetic differentiation index FST of the population indicates a small degree of genetic differ-entiation of the population,while analysis of molecular vari-ance indicates that the variation within populations was greater than between populations.Phylogenetic tree and haplotype network plots showed confounding distributions between hap-lotypes.I.persulcatus from the Hinggan League and Hulun-buir regions can adapt to environmental changes and possess abundant genetic diversity.Genetic differentiation is mainly concentrated within the population and no geographical isolation was observed.
8.Clinical Characteristics Analysis of EBV-associated Hemophago-cytic Lymphohistiocytosis Patients with Acute Kidney Injury
Meng-Ya ZHAO ; Yu QIU ; Jing-Feng LIU ; Dong-Chen GUO ; Jin LIN
Journal of Experimental Hematology 2024;32(4):1248-1257
Objective:To analyze the clinical characteristics of patients with Epstein-Barr virus(EBV)-associated hemophagocytic lymphohistiocytosis(HLH)with acute kidney injury(AKI).Methods:EBV-HLH patients who were hospitalized in our hospital from January 2014 to December 2020 were collected,and their clinical characteristics,treatment,concurrent acute kidney injury and prognosis were retrospectively analyzed.Results:In this study,the incidence of AKI complicated by EBV-HLH was 65.5%,and the 28-day mortality rate was 15.3%.Compared with non-AKI group,patients in the AKI group had higher levels of bilirubin,lactate dehydrogenase,creatinine,urea nitrogen,and β2-microglobulin(β2-MG),poorer coagulation,and lower soluble IL-2 receptor(sCD25).Patients in the AKI group had a higher proportion of chemotherapy,transplantation,mechanical ventilation,and the application of vasoactive medications,and were hospitalized for longer periods of time,with higher in-hospital mortality rates and 28-day mortality rates.Patients in the AKI group were analyzed in subgroups according to the Kidney Disease Improving Global Outcomes(KDIGO)classification,and the levels of leukocytes,bilirubin,albumin,creatinine,urea nitrogen,β2-MG,activated partial thromboplastin time(APTT),and prothrombin time activity(PTA)were more responsive to the severity of the patient's condition.KDIGO grade 2 and 3 had higher proportions of receiving transplants,diuretics,organ support(mechanical ventilation,application of vasoactive medications,and renal replacement therapy),and admissions to the intensive care unit(ICU),and with higher in-hospital mortality rates and 28-day mortality rates.Regression analysis found that creatinine,β2-MG,APTT,transplantation,and chemotherapy were independent risk factors for the development of AKI;the application of vasoactive drugs was both an independent risk factor for the development of AKI and for death at 28 days;and chemotherapy,length of hospitalization,and HGB and fibrinogen levels were protective factors for death at 28 days.Conclusion:AKI in EBV-HLH has high incidence and high rate of progression to severe disease and death,early attention should be given and strengthened in order to carry out early treatment and improve the prognosis of patients.
9.A randomized positive parallel-controlled clinical study of Dibai Yijing Formula for the treatment of male infertility with essence deficiency in the kidney and damp-heat type in the essence chamber
Shuang WU ; Chao-Qian CHEN ; Yun-Zhi LI ; Qiu-Jian FENG ; Hui LÜ ; Xiao-Jing AN ; Jun GUO
National Journal of Andrology 2024;30(11):1019-1024
Objective:This study aims to evaluate the clinical efficacy and safety of Dibai Yijing Formula(DYF)in the treat-ment of male infertility with essence deficiency in the kidney and damp-heat in the essence chamber(Abbreviation:kidney deficiency and damp-heat type).Methods:This study employed a randomized,controlled clinical trial design,recruiting 72 male patients with infertility due to kidney deficiency and damp-heat type.Patients were randomly assigned to an treatment group(36 patients)and a control group(36 patients)using a random number table.The control group received oral Clomiphene Citrate Capsules(50 mg,twice daily),while the treatment group received oral DYF(one dose daily,200 ml each time,30 minutes after breakfast and dinner).Both groups underwent a 12-week treatment period.After treatment,sperm concentration(SC),percentage of progressively motile sperms(PR),total sperm motility[PR+percentage of non-progressively motile sperms(NP)],and semen volume(SV)were compared between the two groups before and after treatment.Additionally,the total score of Traditional Chinese Medicine(TCM)syndrome score and sperm DNA fragmentation index(DFI)and pregnancy outcomes of the patients'spouses were compared between the two groups.Results:Three patients dropped out from the treatment group and four from the control group.There were no statistically sig-nificant differences in semen parameters between the two groups(P>0.05).After treatment,the patients in the treatment group showed significant difference in the percentage of SC([19.42±5.30]x 106/ml vs[10.75±2.41]x 106/ml),PR([27.72±6.62]%vs[20.04±4.10]%),PR+NP([49.86±10.68]%vs(33.74±5.58)%],DFI([12.33±3.43]%vs[15.06±3.98]%)and TCM symtom score([7.45±1.82]vs[13.85±1.91]),and the difference was statistically significant(P<0.05).The patients in the control group showed significant difference in the percentage of SC([19.56±5.24]× 106/ml vs[11.31±2.08]× 106/ml)and TCM symptom score([12.81±1.86]vs[14.06±1.64]).But no significant changes were observed in the PR([21.75±5.93]%vs[20.05±4.67]%),PR+NP([34.23±7.15]%vs[32.35±4.09]%),SV([3.19±1.08]ml vs[3.12±1.13]ml),and DFI([15.11±4.76]%vs[15.51±4.35]%)were not statistically significant(P>0.05).Improve-ments in PR,PR+NP,TCM symptom score and DFI in the treatment group were better than those in the control group after treatment(P<0.05);the differences in SC and SV and spousal pregnancy in the treatment group were not statistically significant compared with those in the control group(P>0.05).No serious adverse events occurred in both groups during the treatment period.Conclusion:The treatment of male infertility with DYF is effective and safe.
10.Analysis of risk factors and construction of prediction model of pathological diagnosis upgrading after resection of colorectal laterally spreading tumors
Erfeng LI ; Jing PANG ; Libin ZHANG ; Wenbin ZHANG ; Feng WANG ; Bin GUO
Chinese Journal of Digestion 2024;44(6):391-397
Objective:To investigate the risk factors affecting pathological diagnosis upgrading after resection of colorectal laterally spreading tumor (LST).Methods:From June 2018 to December 2022, the clinical data of 256 patients with LST (297 lesions) admitted to Shanxi Provincial Cancer Hospital were retrospectively included as an modeling group.From January 2023 to January 2024, 125 patients with LST (129 lesions) were collected as an external validation group. The pathological diagnosis of endoscopic forceps biopsy (EFB) samples and the resected LST tissue of modeling group were compared, and the patients were divided into pathological non-difference group and pathological upgrading group. The clinical data such as gender, age, body mass index (BMI), pre-resection carcinoembryonic antigen levels, drinking history, smoking history, family history of colorectal cancer, and whether complicated with underlying diseases as well as endoscopic surface morphological features such as lesion size, morphological features, and lesion location were compared between the two groups. Chi-square test was used for statistical analysis, and multivariate logistic regression analysis was used to identify the risk factors for pathological diagnosis upgrading after resection. Based on the independent risk factors, the prediction models were established and validated by nomogram. The receiver operating characteristic curve (ROC) of repeated samples within the modeling group and external validation growp was plotted, and the area under the curve (AUC) was used to evaluate the predictive value of the model.Results:The proportion of patients with family history of colorectal cancer in the pathological upgrading group was higher than that of the pathological non-difference group (38.7%, 12/31 vs. 22.2%, 50/225), and the difference was statistically significant ( χ2=4.04, P=0.045). There were statistically significant differences in lesion size (63.9% (23/36) and 44.4% (116/261) lesions with long diameter ≥2 cm, respectively), surface morphological characteristics (flat elevated type accounted for 8.3% (3/36) and 22.6% (59/261), granular uniform type accounted for 11.1% (4/36) and 28.0% (73/261), nodular mixed type accounted for 44.4% (6/36) and 24.9% (65/261), pseudo-depressed type accounted for 36.1% (13/36) and 24.5% (64/261)), and lesion location (distal colon accounted for 22.2% (8/36) and 33.3% (87/261), proximal colon accounted for 16.7% (6/36) and 28.7% (75/261), and rectum accounted for 61.1% (22/36) and 37.9% (99/261)) between the pathological upgrading group and the pathological non-difference group ( χ2=4.80, 12.62 and 7.08, all P<0.05). The results of multivariate logistic regression analysis showed that family history of colorectal cancer ( OR=2.211, 95% confidence interval (95% CI) 1.005 to 4.861, P=0.049), lesion length ≥ 2 cm ( OR=2.212, 95% CI 1.074 to 4.555, P=0.031), nodular mixed subtype ( OR=4.841, 95% CI 1.343 to 17.455, P=0.016), pseudo-depressed subtype ( OR=3.995, 95% CI 1.084 to 14.721, P=0.037), and lesion in rectum ( OR=2.417, 95% CI 1.024 to 5.705, P=0.044) were independent risk factors for pathological diagnosis upgrading after LST resection. A nomogram was established based on these four risk factors, with a ROC AUC of 0.833 (95% CI 0.752 to 0.913). The external validation results demonstrated that the ROC AUC was 0.848 (95% CI 0.736 to 0.960), the sensitivity was 0.737, the specificity was 0.972, the maximum Youden index was 0.712, and the overall accuracy was 0.868. Conclusions:Family history of colorectal cancer, lesion length ≥ 2 cm, lesion in rectum, and nodular mixed or pseudo-depressed subtypes may affect the accuracy of pathological diagnosis of LST lesions by EFB, and leading to pathological diagnosis upgrading after resection. The prediction model based on these four factors has good predictive efficacy in pathological diagnosis upgrading after LST resection.

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