BACKGROUND:Osteoporotic fracture is the most serious complication of osteoporosis.Previous studies have demonstrated that gut microbiota has a regulatory effect on skeletal tissue and that gut microbiota has an important relationship with osteoporotic fracture,but the causal relationship between the two is unclear. OBJECTIVE:To explore the causal relationship between gut microbiota and osteoporotic fractures using Mendelian randomization method. METHODS:The genome-wide association study(GWAS)datasets of gut microbiota and osteoporotic fracture were obtained from the IEU Open GWAS database and the Finnish database R9,respectively.Using gut microbiota as the exposure factor and osteoporotic fracture as the outcome variable,Mendelian randomization analyses with random-effects inverse variance weighted,MR-Egger regression,weighted median,simple model,and weighted model methods were performed to assess whether there is a causal relationship between gut microbiota and osteoporotic fracture.Sensitivity analyses were performed to test the reliability and robustness of the results.Reverse Mendelian randomization analyses were performed to further validate the causal relationship identified in the forward Mendelian randomization analyses. RESULTS AND CONCLUSION:The results of this Mendelian randomization analysis indicated a causal relationship between gut microbiota and osteoporotic fracture.Elevated abundance of Actinomycetales[odds ratio(OR)=1.562,95%confidence interval(CI):1.027-2.375,P=0.037),Actinomycetaceae(OR=1.561,95%CI:1.027-2.374,P=0.037),Actinomyces(OR=1.544,95%CI:1.130-2.110,P=0.006),Butyricicoccus(OR=1.781,95%CI:1.194-2.657,P=0.005),Coprococcus 2(OR=1.550,95%CI:1.068-2.251,P=0.021),Family ⅩⅢ UCG-001(OR=1.473,95%CI:1.001-2.168,P=0.049),Methanobrevibacter(OR=1.274,95%CI:1.001-1.621,P=0.049),and Roseburia(OR=1.429,95%CI:1.015-2.013,P=0.041)would increase the risk of osteoporotic fractures in patients.Elevated abundance of Bacteroidia(OR=0.660,95%CI:0.455-0.959,P=0.029),Bacteroidales(OR=0.660,95%CI:0.455-0.959,P=0.029),Christensenellacea(OR=0.725,95%CI:0.529-0.995,P=0.047),Ruminococcaceae(OR=0.643,95%CI:0.443-0.933,P=0.020),Enterorhabdus(OR=0.558,95%CI:0.395-0.788,P=0.001),Eubacterium rectale group(OR=0.631,95%CI:0.435-0.916,P=0.016),Lachnospiraceae UCG008(OR=0.738,95%CI:0.546-0.998,P=0.048),and Ruminiclostridium 9(OR=0.492,95%CI:0.324-0.746,P=0.001)would reduce the risk of osteoporotic fractures in patients.We identified 16 gut microbiota associated with osteoporotic fracture by the Mendelian randomization method.That is,using gut microbiota as the exposure factor and osteoporotic fracture as the outcome variable,eight gut microbiota showed positive causal associations with osteoporotic fracture and another eight gut microbiota showed negative causal associations with osteoporotic fracture.The results of this study not only identify new biomarkers for the early prediction of osteoporotic fracture and potential therapeutic targets in clinical practice,but also provide an experimental basis and theoretical basis for the study of improving the occurrence and prognosis of osteoporotic fracture through gut microbiota in bone tissue engineering.

Enamel demineralization, the formation of white spot lesions, is a common issue in clinical orthodontic treatment. The appearance of white spot lesions not only affects the texture and health of dental hard tissues but also impacts the health and aesthetics of teeth after orthodontic treatment. The prevention, diagnosis, and treatment of white spot lesions that occur throughout the orthodontic treatment process involve multiple dental specialties. This expert consensus will focus on providing guiding opinions on the management and prevention of white spot lesions during orthodontic treatment, advocating for proactive prevention, early detection, timely treatment, scientific follow-up, and multidisciplinary management of white spot lesions throughout the orthodontic process, thereby maintaining the dental health of patients during orthodontic treatment.
Humans ; Consensus ; Dental Caries/etiology* ; Dental Enamel/pathology* ; Tooth Demineralization/etiology* ; Tooth Remineralization

The prevalence of Class III malocclusion varies among different countries and regions. The populations from Southeast Asian countries (Chinese and Malaysian) showed the highest prevalence rate of 15.8%, which can seriously affect oral function, facial appearance, and mental health. As anterior crossbite tends to worsen with growth, early orthodontic treatment can harness growth potential to normalize maxillofacial development or reduce skeletal malformation severity, thereby reducing the difficulty and shortening the treatment cycle of later-stage treatment. This is beneficial for the physical and mental growth of children. Therefore, early orthodontic treatment for Class III malocclusion is particularly important. Determining the optimal timing for early orthodontic treatment requires a comprehensive assessment of clinical manifestations, dental age, and skeletal age, and can lead to better results with less effort. Currently, standardized treatment guidelines for early orthodontic treatment of Class III malocclusion are lacking. This review provides a comprehensive summary of the etiology, clinical manifestations, classification, and early orthodontic techniques for Class III malocclusion, along with systematic discussions on selecting early treatment plans. The purpose of this expert consensus is to standardize clinical practices and improve the treatment outcomes of Class III malocclusion through early orthodontic treatment.
Humans ; Malocclusion, Angle Class III/classification* ; Orthodontics, Corrective/methods* ; Consensus ; Child

Purpose/Significance To investigate and analyze the current situation of data security in the national medical industry,and to provide suggestions for data security construction for regulatory authorities,hospital informatization practitioners and hospital infor-matization manufacturers.Method/Process A survey and research on medical industry data security is conducted for the heads of hospital information technology departments and relevant management personnel in data security construction and maintenance nationwide.The content includes understanding of laws and regulations,as well as the current situation,existing problems,system functions,and hierar-chical evaluation of hospital data security construction,in order to analyze the current situation of data security in the national medical in-dustry.Result/Conclusion The awareness of data compliance in hospitals across the country has significantly strengthened,and the vast majority of hospitals have a certain level of data security technology support capabilities.However,there are still many shortcomings in data security and personal information protection.

The intestine is the largest immune and metabolic site in the body and is thus important for animal health.The integrity of the mucosal barrier and function are fundamental factors protecting the health of the intestine.Stress has been reported to have profound effects on the gastrointestinal tract,including altering gut permeability,the intestinal barrier,and homeostasis.Tryptophan is a functional essential amino acid that alters the gut microbiota and regulates intestine structural and functional change,thus contributing to host physiology and metabolism.Changes in tryptophan metabolism and its metabolites in brain and intestinal tissues during stress suggest that tryptophan may play an important role in the stress response.We therefore review the literature on the mechanisms underlying stress-related diseases and the role of tryptophan metabolism in the regulation of gut homeostasis,with particular focus on functional bowel disorders and their relationship to stress,to provide a theoretical foundation for targeting tryptophan in stress-related intestine diseases.

Purpose To investigate the feasibility of apoptosis small-molecule probe CYS-F for in vivo molecular imaging in acute middle cerebral artery embolization and recalculation models,and to explore its ability to reflect lesions.Materials and Methods Hela cell apoptosis was induced by Adriamycin,and the targeting ability of the probe was verified in vitro.Clinical middle cerebral artery embolization was simulated,acute ischemic stroke model(n=15)and recanalization model(n=15)were constructed,and the vessels were evaluated by magnetic resonance angiography imaging.The distribution of CYS-F was investigated by injecting the probe into the caudal vein.24 hours after modeling,the lesion volume rate was assessed on T2WI,and apoptosis was assessed in vivo by near infrared imaging.Niss and c-fos staining were used to compare the differences between the two groups.Results CYS-F showed a good ability to target apoptosis in vitro.After modeling,Doppler flowmeter and magnetic resonance angiography showed that the middle cerebral artery was successfully embolized in the embolization group,and the artery was recanalized in the recanalization group.Near infrared imaging showed the loss of fluorescence signal in the middle cerebral artery region in the embolized group.24 hours after modeling,T2WI showed that the infarct volume rate in the recanalization group was significantly lower than that in the embolization group(0.055±0.015 vs.0.512±0.220;t=19.761,P<0.001).The fluorescence intensity of the embolization group was significantly stronger than that of the recusing group,the target to background ratio was 1.215±0.162 and 0.731±0.085,respectively(t=10.252,P<0.001).In the embolization group,a large number of activated neurons expressed c-fos protein,and a large number of cells underwent nuclear condensation and lysis by Niss staining.Conclusion The acute embolization model and recalculation model of middle cerebral artery in mice are close to the clinic.CYS-F can be used to image apoptosis in vivo,reflect the lesion degree,and reflect the local tissue blood perfusion at the initial stage of injection.

Objective:To investigate the efficacy and safety of AcoStream peripheral thrombus aspiration system combined with catheter-directed thrombolysis in the treatment of lower extremity deep vein thrombosis.Methods:The clinical data of 16 lower extremity deep vein thrombosis cases treated with AcoStream peripheral thrombus aspiration system combined with catheter-directed thrombolysis, admitted to the authors′ hospital from May 2022 to November 2022, were retrospectively analyzed. The differences in circumferential diameter between the affected limb and the healthy side, venous patency score, thrombus clearance grade and intraoperative blood loss were observed and compared. The Villalta score was used during the follow up. Paired sample t-test and Wilcoxon rank sum test were used to compare the changes in the observed indicators before and after treatment to evaluate the efficacy. Results:Treatment were successfully performed in all patients. Before treatment, the circumference differences between the affected and unaffected thighs and calves were (3.69±0.97) and (3.34±0.75)cm, respectively, the venous patency score of the affected side was 8(7.25,9) points. After treatment, the circumference differences between the affected and unaffected thighs and calves were (0.81±0.68) and (0.84±0.70)cm, respectively. The venous patency score of the affected side was 1(0,1)points, with statistically significant differences ( P<0.001). Grade Ⅲ thrombus clearance was achieved in 7 patients, grade Ⅱ thrombus clearance was achieved in 9 patients. The average blood loss during thrombus aspiration was (133.1±12.0) ml. Following up for 6 months, the Villalta score was 0(0,1.75) points. Conclusion:Acostream peripheral thrombus aspiration system combined with catheter-directed thrombolysis is safe and effective for the treatment of lower extremity deep venous thrombosis, with satisfactory short-term efficacy and high clinical application value.

Objective:To identify early potential risk factors for sepsis-associated liver injury and to provide a reference for early clinical identification and intervention.Methods:The clinical data of septic patients admitted to the intensive care unit (ICU) in the Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University from March 2020 to April 2023 were retrospectively analyzed. Patients with sepsis were categorized into the liver injury group and the non-liver injury group according to whether liver injury occurred or not, univariate and multivariate logistic regression analyses were used to explore the risk factors for SALI, receiver operating characteristic (ROC) curve analysis was used to assess its predictive effect for SALI, and performed subgroup analyses basing on the cut-off point.Results:Among 530 eligible patients, 403 patients were included. The incidence of liver injury was 39.45% in 159 cases with liver injury and 244 cases without liver injury. Multivariate logistic regression analysis showed that serum prealbumin, lactate and lactate dehydrogenase were independent risk factors for SALI. ROC curve analysis showed that all single indicators had some predictive value for SALI, the area under the curve was prealbumin (AUC: 0.752, 95% CI: 0.703-0.801), lactate (AUC: 0.679, 95% CI: 0.627-0.732), lactate dehydrogenase (AUC: 0.664, 95% CI: 0.611-0.718), respectively, The AUC for predicting SALI by lactate/prealbumin ratio (L/P) and lactate dehydrogenase/prealbumin ratio were 0.808 (95% CI: 0.766-0.850) and 0.795 (95% CI: 0.750-0.840), respectively, with the best efficacy of L/P in predicting SALI. Subgroup analyses showed that the incidence of liver injury was significantly higher in septic patients with L/P ≥0.23 than that in septic patients with L/P <0.23, at the same time, the acute physiology and chronic health evaluation II score, shock probability, and hospital mortality rate also increased accordingly, the differences were all statistically significant (all P < 0.001). Conclusions:L/P is early independent risk factor of SALI, for sepsis patients with L/P≥0.23 should be alerted to the development of liver injuryis.

Objective:To investigate the prevalence of dental caries of 4-year-old children in Miyun District of Beijing by international caries detection and assessment system(ICDAS),to detect the caries activity Cariostat value and to analyze the correlation between the Cariostat value and dental caries.Methods:Totally 815 children aged 4 years in 7 kindergartens in Miyun District of Beijing were recrui-ted.The clinical examination of all children was conducted by one examiner using ICDAS.The oral de-birs and plaques were collected by one doctor who recorded the Cariostat scores.The results of clinical examination were compared between genders.At the same time,the prevalence of dental caries,the mean d3-6ft/d3_6fs and d1-6ft/d1-6fs among high Cariostat scores group(2.0-3.0),medium Cariostat scores group(1.5)and low Cariostat scores group(0-1.0)were compared.The distributions of incipi-ent caries in different Cariostat scores groups were compared among children with incipient caries only.Results:All the children had incipient caries,and 78.3％of the children had cavitated caries with ICDAS score of 3 or above.The mean d1-2t scores were 9.76±3.65,the mean d3-6ft scores was 4.64±4.43 and the mean d1-6ft scores were 14.41±3.42.The incipient caries with ICDAS score of 1-2 were widely distributed,accounting for 67.7％of the total numbers of caries.There was no significant diffe-rence in caries prevalence and caries experience between genders(P＞0.05).The proportion of children with high Cariostat scores in boys(43.6％)was higher than that in girls(33％)and the difference was statistically significant(P＜0.05).With the increase of Cariostat scores,the prevalence of cavitated caries,the mean d3-6ft/d3-6fs and d1-6ft/d,_6fs scores in children was on the increase and the difference among the three groups was statistically significant(P＜0.05).For children with incipient caries only,the distribution of incipient caries in different Cariostat scores groups was no significant difference(P＞0.05).Conclusion:ICDAS can detect early enamel demineralization of deciduous teeth in children.The prevalence of dental caries among 815 4-year-old children in Miyun District of Beijing is more serious,and incipient caries is widely distributed in children.Cariostat value reflects the status of cavi-tated caries and has no correlation with the distribution of incipient caries.Therefore,the combined ap-plication of ICDAS and Cariostat caries activity detection method is helpful for the detection of incipient caries and screening of caries high-risk children,which has great significance for the comprehensive ma-nagement of caries in children and the formulation of early preventive measures.

Objective To explore the related factors of lymph node metastasis in early gastric cancer and to analyze the clinical efficacy between laparoscopic D2 radical resection and endoscopic submucosal dissection(ESD).Methods A retrospective cohort study was conducted on 404 patients with early gastric cancer undergoing surgical treatment in our hospital from June 2018 to June 2022 were recruited in this study.According to their surgical treatment,they were divided into laparoscopy group(n=271)and ESD group(n=133).The lymph node metastases were compared in the patients with different clinical features,and the factors affecting lymph node metastasis were analyzed with multivariate logistic regression analysis.The lymph node metastasis rate of patients with absolute and expanded indications of ESD was calculated.Kaplan-Meier survival analysis was used to compare the long-term efficacy of ESD and laparoscopic D2 radical resection in these patients.Stratified regression analysis was applied to explore the relationship between surgical methods and long-term outcome in them.Results In the 404 patients with early gastric cancer,the rate of lymph node metastasis was 12.38％(50/404).Univariate analysis showed that 7 clinical features,such as ulcer,tumor pathological features and pathological differentiation,were related to lymph node metastasis.Multivariate logistic regression analysis revealed that low differentiation and tumor infiltration depth of submucous membrane(SM)were related factors affecting lymph node metastasis in early gastric cancer.The overall survival rate was 96.29％(389/404)in the 404 patients,96.31％in the laparoscopic group and 96.24％in the ESD group,and no statistical difference was seen between the 2 groups(P＞0.05).There was no obvious difference in 5-year survival rate between the patients who met the absolute indications for ESD and underwent laparoscopic D2 radical surgery and those receiving ESD treatment(96.00％vs 96.55％),and between those who were in accordance with the expanded indications for ESD and underwent laparoscopic D2 radical surgery and those receiving ESD treatment(94.74％vs 91.67％).After adjusting the clinical features such as lesion size,pathological differentiation and depth of tumor invasion by stratified regression analysis,the mode of operation for early gastric cancer was still correlated with the long-term efficacy(β=1.173,P=0.003).Conclusion The depth of tumor infiltration and differentiation are closely related to lymph node metastasis in early gastric cancer patients.The efficacy of laparoscopic D2 radical surgery on the patients with absolute and expanded indications for ESD is comparable to that of ESD treatment.