Cemental tear is a rare and indetectable condition unless obvious clinical signs present with the involvement of surrounding periodontal and periapical tissues. Due to its clinical manifestations similar to common dental issues, such as vertical root fracture, primary endodontic diseases, and periodontal diseases, as well as the low awareness of cemental tear for clinicians, misdiagnosis often occurs. The critical principle for cemental tear treatment is to remove torn fragments, and overlooking fragments leads to futile therapy, which could deteriorate the conditions of the affected teeth. Therefore, accurate diagnosis and subsequent appropriate interventions are vital for managing cemental tear. Novel diagnostic tools, including cone-beam computed tomography (CBCT), microscopes, and enamel matrix derivatives, have improved early detection and management, enhancing tooth retention. The implementation of standardized diagnostic criteria and treatment protocols, combined with improved clinical awareness among dental professionals, serves to mitigate risks of diagnostic errors and suboptimal therapeutic interventions. This expert consensus reviewed the epidemiology, pathogenesis, potential predisposing factors, clinical manifestations, diagnosis, differential diagnosis, treatment, and prognosis of cemental tear, aiming to provide a clinical guideline and facilitate clinicians to have a better understanding of cemental tear.
Humans ; Dental Cementum/injuries* ; Consensus ; Diagnosis, Differential ; Cone-Beam Computed Tomography ; Tooth Fractures/therapy*

ObjectiveTo investigate the association of SH2B1 rs7359397 （C>T） polymorphism with the progression to hepatic fibrosis in the elderly patients with metabolic dysfunction-associated steatotic liver disease （MASLD） in Beijing， China， and to provide an important genetic basis for the precise subtyping， prognostic evaluation， and individualized treatment of elderly MASLD patients in China. MethodsA total of 505 elderly patients （aged ≥65 years） who participated in regular physical examination in Mentougou Kuangshan Hospital of Beijing Jingmei Group General Hospital from November 2020 to September 2021 and were diagnosed with MASLD by abdominal ultrasound were enrolled as MASLD group， and 381 elderly population who underwent physical examination in the same community hospital during the same period of time and were not found to have MASLD by abdominal ultrasound were enrolled as control group. FibroScan was used to measure liver fat content and determine fibrosis stage. The 96-well microfluidic chip technique was used to identify SH2B1 rs7359397 polymorphism. The independent-samples t test was used for comparison of normally distributed continuous data between the two groups， and the chi-square test or the adjusted chi-square test was used for comparison of categorical data between the two groups. Univariate and multivariate Logistic regression analyses were used to identify the independent predictive factors for MASLD and its comorbidities. ResultsCompared with the control group， the MASLD group had a significantly younger age and significantly higher levels of waist circumference， hip circumference， waist-hip ratio， body mass index （BMI）， alanine aminotransferase， aspartate aminotransferase， triglyceride， platelet count， and fibrosis-4 （FIB-4） index， as well as a significantly lower level of high-density lipoprotein cholesterol （all P<0.05）. Among the 381 patients in the control group， 264 （69.29%） had genotype CC and 117 （30.71%） had genotype CT+TT， while among the 505 patients in the MASLD group， 317 （62.77%） had genotype CC and 188 （37.23%） had genotype CT+TT， suggesting that the MASLD group had a significantly higher proportion of patients with genotype CT+TT compared with the control group （χ²=4.09， P=0.043）. In the MASLD group， compared with the genotype CC group， the genotype CT+TT group had a significantly lower proportion of patients with FIB-4 ≥2 or atherosclerotic cardiovascular diseases （P<0.05）. The multivariate Logistic regression analysis showed that after adjustment for age， sex， and BMI， carrying T allele was a protective factor against progressive hepatic fibrosis （odds ratio ［OR］=0.481， 95% confidence interval ［CI］： 0.249 — 0.929， P=0.029）. In the subgroups of comorbidities with hypertension， metabolic syndrome， and obesity， genotype CT+TT was associated with a significant reduction in the risk of progressive hepatic fibrosis （hypertension： OR=0.27， 95%CI：0.09 — 0.77， P=0.014； metabolic syndrome： OR=0.30， 95%CI： 0.11 — 0.79， P=0.015； obesity： OR=0.11， 95%CI： 0.03 — 0.48， P=0.003）. After adjustment for age， sex， and BMI， in the patients with MASLD， the patients with genotype CT+TT had a significant reduction in the prevalence rate of atherosclerotic cardiovascular diseases compared with those with genotype CC （OR=0.506， 95%CI：0.336 — 0.761， P=0.001）. ConclusionSH2B1 rs7359397 （C>T） polymorphism is associated with the reduction in the risk of hepatic fibrosis and atherosclerotic cardiovascular diseases in MASLD patients.

To explore the prevalence and related risk factors of osteoporosis (OP) in the elderly ≥60 years old in Jiuting Town, Songjiang District, Shanghai City. A total of 2 175 local residents aged ≥60 years old who participated in the questionnaire survey at the physical examination center of Jiuting Community Health Service Center, Songjiang District, Shanghai City from July 2021 to December 2022 were selected by a cross-sectional study with multi-stage sampling method. Questionnaire survey, blood test and bone mineral density (BMD) test were conducted.The differences in all the parameters among the elderly with different bone mass level were analyzed using t-test, chi-square test, binary logistic regression was used to screen the potential risk factors of OP.The results showed that the prevalence of OP in the elderly aged≥60 years old in Jiuting Town was 45.89%.The prevalence of OP increased gradually with the advanced age. The prevalence rate of male was significantly lower than that of female( χ2=211.94, P<0.01).Single factor analysis showed that Dairy products( χ2=9.01, P<0.05), taking calcium( χ2=42.88, P<0.05), physical exercise( χ2=24.73, P<0.05), exercise time( χ2=76.40, P<0.05) and sun exposure( χ2=55.71, P<0.05) were the protective factors for osteoporosis. Multifactor analysis showed that female( wald χ 2=71.46, P<0.001) were the risk factors for osteoporosis. The age of the osteoporosis group was older than that of the non-osteoporosis group [osteoporosis group (72.47±6.89) years old, non-osteoporosis group (68.73±6.34) years old, and the difference was statistically significant, t=-11.67, P<0.05]. The waist circumference, alanine aminotransferase (ALT), creatinine (CR), blood urea nitrogen (BUN) and uric acid (UA) in the non-osteoporosis group were higher than those in the osteoporosis group, and the difference was statistically significant (all P<0.05). The levels of high-density lipoprotein (HDL)[osteoporosis group (1.34±0.35) mol/L, non-osteoporosis group (1.41±0.35) mol/L, t=-4.51, P<0.05] and alkaline phosphatase (ALP)[osteoporosis group (88.46±25.65) mol/L, osteoporosis group (94.56±32.32) mol/L, t=-4.79, P<0.05] in the osteoporosis group were lower than those in the non-osteoporosis group.Low awareness of the knowledge of osteoporosis risk factors(smoking, drinking coffee, high salt and drinking alcohol are 47.28%, 24.15%, 47.79% and 44.90%, respectively), diagnosis and treatment(The symptoms, prognosis, screening methods, medication time and follow-up screening time of osteoporosis were 26.87%, 17.88%, 21.77%, 6.65% and 15.99%, respectivel) and prevention(exercise mode, high calcium food, optimal age of calcium supplementation, the effect of vitamin D on OP, and the appropriate amount of milk to prevent osteoporosis were 33.16%, 42.01%, 13.27%, 12.07%, 9.01%, respectively) were in Jiuting Town. In conclusion, the prevalent rate of OP in the elderly ≥60 years old in Jiuting Town is 45.89%.The main risk factors are female and advanced age. Drinking tea, dairy products, combination of meat and vegetable, taking calcium, physical exercise and sun exposure were the protective factors for osteoporosis. The awareness rate of osteoporosis related knowledge is low, and health education should be strengthened in order to control and prevent the occurrence and development of osteoporosis.

To explore the prevalence and related risk factors of osteoporosis (OP) in the elderly ≥60 years old in Jiuting Town, Songjiang District, Shanghai City. A total of 2 175 local residents aged ≥60 years old who participated in the questionnaire survey at the physical examination center of Jiuting Community Health Service Center, Songjiang District, Shanghai City from July 2021 to December 2022 were selected by a cross-sectional study with multi-stage sampling method. Questionnaire survey, blood test and bone mineral density (BMD) test were conducted.The differences in all the parameters among the elderly with different bone mass level were analyzed using t-test, chi-square test, binary logistic regression was used to screen the potential risk factors of OP.The results showed that the prevalence of OP in the elderly aged≥60 years old in Jiuting Town was 45.89%.The prevalence of OP increased gradually with the advanced age. The prevalence rate of male was significantly lower than that of female( χ2=211.94, P<0.01).Single factor analysis showed that Dairy products( χ2=9.01, P<0.05), taking calcium( χ2=42.88, P<0.05), physical exercise( χ2=24.73, P<0.05), exercise time( χ2=76.40, P<0.05) and sun exposure( χ2=55.71, P<0.05) were the protective factors for osteoporosis. Multifactor analysis showed that female( wald χ 2=71.46, P<0.001) were the risk factors for osteoporosis. The age of the osteoporosis group was older than that of the non-osteoporosis group [osteoporosis group (72.47±6.89) years old, non-osteoporosis group (68.73±6.34) years old, and the difference was statistically significant, t=-11.67, P<0.05]. The waist circumference, alanine aminotransferase (ALT), creatinine (CR), blood urea nitrogen (BUN) and uric acid (UA) in the non-osteoporosis group were higher than those in the osteoporosis group, and the difference was statistically significant (all P<0.05). The levels of high-density lipoprotein (HDL)[osteoporosis group (1.34±0.35) mol/L, non-osteoporosis group (1.41±0.35) mol/L, t=-4.51, P<0.05] and alkaline phosphatase (ALP)[osteoporosis group (88.46±25.65) mol/L, osteoporosis group (94.56±32.32) mol/L, t=-4.79, P<0.05] in the osteoporosis group were lower than those in the non-osteoporosis group.Low awareness of the knowledge of osteoporosis risk factors(smoking, drinking coffee, high salt and drinking alcohol are 47.28%, 24.15%, 47.79% and 44.90%, respectively), diagnosis and treatment(The symptoms, prognosis, screening methods, medication time and follow-up screening time of osteoporosis were 26.87%, 17.88%, 21.77%, 6.65% and 15.99%, respectivel) and prevention(exercise mode, high calcium food, optimal age of calcium supplementation, the effect of vitamin D on OP, and the appropriate amount of milk to prevent osteoporosis were 33.16%, 42.01%, 13.27%, 12.07%, 9.01%, respectively) were in Jiuting Town. In conclusion, the prevalent rate of OP in the elderly ≥60 years old in Jiuting Town is 45.89%.The main risk factors are female and advanced age. Drinking tea, dairy products, combination of meat and vegetable, taking calcium, physical exercise and sun exposure were the protective factors for osteoporosis. The awareness rate of osteoporosis related knowledge is low, and health education should be strengthened in order to control and prevent the occurrence and development of osteoporosis.

The purpose of this study was to investigate the regulatory effects of biofilm associated non-coding small RNA(sRNA)00085 on the survival and environmental fitness of Listeria monocytogenes.Homologous recombination technology was used to construct a deletion mutant strain(△sRNA 00085)and a complementary strain(C △sRNA 00085)of the sRNA00085 target gene.The differences in biological characteristics were compared among the standard strain,△sRNA 00085,and C△sRNA 00085.The deletion of sRNA00085 led to a significant decrease in biofilm formation capacity and sensitivity to several antibiotics,including penicillin,piperacillin,doxycycline,tetracycline,vancomycin,and cotrimoxazole.However,only the minimum inhibitory concentration(MIC)of tetracycline exhibited a significant decrease in △sRNA00085.Meanwhile,the decreased biofilm formation and antibiotic resistance of the sRNA00085 mutant were restored in the C△sRNA00085 strain.Furthermore,we investigated the transcription levels of tetracycline resistance-related genes in L.monocytogenes.Down-regu-lated transcription of the tetS gene but no significant difference in transcription of the tetA gene were observed in △sRNA 00085 compared with the standard strain and C△sRNA00085.Moreover,the elimination of sRNA00085 did not affect bacterial growth ability or sensitivity to disinfectants.These findings highlight that sRNA00085 plays an important role in the environ-mental adaptability of L.monocytogenes by affecting bacterial biofilm formation and resistance.

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.

Objective To investigate the mechanism by which lectin-like oxidized low density lipoprotein receptor-1(LOX-1)regulates hyperglycemic-induced myocardial fibroblast(CFs)fibrosis through the glycogen synthase kinase-3β(GSK-3β)/signal transducer and activator of transcription 3(STAT3)pathway.Methods CFs were isolated,cultured and identified.LOX-1 RNAi lentiviral vector was constructed and infected CFs.The experimental groups were as follows:Normal control(NC)group,High glucose(HG)group,LV-LOX-1,LV-Con group,Hypertonic(HPG)group.After LV-LOX-1 and LV-Con were infected with CFs,adding 25 mmol/L glucose to culture CFs for 24 h,they were denoted as HG+LV-LOX-1 group and HG+LV-Con group.Cells in HG+LV-LOX-1 group and HG+LV-Con group were treated with 10 μ mol/L SB216763 and 10 μ mol/L STATTIC for 24 h,respectively,and then they were recorded as HG+LV-LOX-1+SB216763 group,HG+LV-Con+SB216763 group,HG+LV-LOX-1+STATTIC group and HG+LV-Con+STATTIC group.CCK-8 was used to detect the activity of CFs,and the expression levels of mRAN and protein of LOX-1,collagen type I(COL-I),thioredoxin 5(TXNDC5),GSK-3β,STAT3,p-GSK-3β and p-STAT3 were detected by qRT-PCR and Western blot.Results CFs infected with LOX-1 RNAi lentiviral vector were obtained,which showed green under fluorescence microscopy.Compared with HG and HG+LV-Con groups,the mRNA expressions of LOX-1,COL-I and TXNDC5 were decreased in HG+LV-LOX-1 group(P<0.05).Compared with HG+LV-LOX-1 group,mRNA expressions of COL-I and TXNDC5 were decreased in HG+LV-LOX-1+SB216763 and HG+LV-LOX-1+STATTIC groups(P<0.05).Compared with HG and HG+LV-Con groups,p-GSK-3β protein expression was increased in HG+LV-LOX-1 group(P<0.05),while LOX-1,p-STAT3,COL-I,TXNDC5 protein expression was decreased in HG+LV-LOX-1 group(P<0.05).Compared with HG+LV-LOX-1 group,p-GSK-3β protein expression was increased in HG+LV-LOX-1+SB216763 group(P<0.05),while the protein expressions of p-STAT3,COL-I and TXNDC5 were decreased in HG+LV-LOX-1+SB216763 and HG+LV-LOX-1+STATTIC groups(P<0.05).Conclusion LOX-1,GSK-3β,STAT3,TXNDC5,and COL-I are involved in high glucose induced CFs fibrosis.LOX-1 promotes the expression of TXNDC5 and COL-I through GSK-3β/STAT3 pathway,and inhibition of LOX-1 can inhibit high glucose induced CFs fibrosis.

Objective To investigate the molecular mechanism of lectin-like oxidized low-density lipoprotein receptor 1(LOX-1)in the regulation of high glucose induced phagocytosis dysfunction of mouse microglia(BV2 microglia).Methods BV2 cells were cultured in vitro,lentivirus LOX-1RNAi vector(LV-LOX-1)and lentivirusempty vector(LV-Con)were constructed and divided into normal control(NC)group,HG group,LV-LOX-1 group and LV-Con group.After infecting BV2 cells with LV-LOX-1 and LV-Con,the cells were cultured with 25 mmol/L glucose for 24 h,and then divided into HG+LV-LOX-1 group and HG+LV-Con group.After treatment of HG+LV-LOX-1 and HG+LV-Con infected BV2 microglia with 15 μmol/L FH535(β-catenin inhibitor)and AEBSF(ATF6α inhibitor)for 24 h,respectively,they were denoted as HG+LV-LOX-1+FH535 group,HG+LV-Con+FH535 group,HG+LV-LOX-1+AEBSF group,and HG+LV-Con+AEBSF group.Transfection efficiency was determined by fluorescence microscopy,RT-PCR and Western blot.Cell viability was detected b CCK-8.RT-PCR and Western blot were used to detect the mRNA and protein expression of LOX-1,β-catenin,ATF6α and milk fat globular-surface growth factor Ⅷ(MFG-E8)in each group.Results After 72 h of LV-LOX-1 infection,the cells in LV-LOX-1 and LV-Con groups showed a lot of green fluorescence,but not in NC group.Compared with NC group,the mRNA and protein expression of LOX-1 and ATF6α were increased(P<0.05),while the mRNA and protein expression of MFG-E8 and β-catenin decreased in HG group(P<0.05).Compared with HG+LV-Con group,the mRNA and protein expression of LOX-1 and ATF6α were decreased(P<0.05),while the mRNA and protein expression of MFG-E8 and β-catenin increasedin HG+LV-LOX-1 group(P<0.05).Compared with HG+LV-LOX-1 group,the mRNA and protein expressions of MFG-E8 and β-catenin were decreased(P<0.05),and the mRNA and protein expressions of ATF6α and p-β-catenin and p-ATF6α were increased in HG+LV-LOX-1+FH535 group(P<0.05).Compared with HG+LV-LOX-1 group,the mRNA and protein expression were increased(P<0.05),ATF6α mRNA and protein expression and p-ATF6α protein expression were decreased MFG-E8 in HG+LV-LOX-1+AEBSF group(P<0.05).Conclusions LOX-1,MFG-E8,β-catenin and ATF6α are involved in the regulation of phagocytosis of BV2 cells.LOX-1 promotes the phagocytosis dysfunction of BV2 microglia induced by high glucose through β-catenin/ATF6α signaling pathway.

Objective:To investigate the effect of low expression of silencing information regulator-6 (SIRT-6) on inflammatory reaction and autophagy in monocytes.Methods:Human acute monocytic leukemia cell line THP-1 was transfected with si-SIRT6 to establish THP-1 cell line with low expressed SIRT-6. The cells were divided into control group, MUS group and MUS+ RAPA group. Cells in control group were cultured with medium added with PBS, cells in MUS Group were cultured with medium added with MUS, and cells in MUS+ RAPA Group were added with MUS and Rapamycin. Cells in each group were cultured for 48 hours. The levels of interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in the supernatant of each group were detected by enzyme-linked immunosorbent assay (ELISA). The gene expression levels of autophagy-associated protein-5 (ATG-5), Beclin-1, lysosomal-associated membrane protein-1 (LAMP-1), microtubule-associated protein-1 light chain 3B (LC3B) and p62 in cells of each group were detected by Q-PCR. The protein expression levels of p62, ATG-5 and LC3B Ⅱ/LC3BⅠ in cells of each group. The one-way analysis of variance (ANOVA) was used for the measurement data in multi-groups, and the LSD- t test was used for the measurement data in both groups. Results:The gene and protein expression of SIRT-6 in THP-1 cells decreased significantly after si-SIRT6 transfection (Gene: 1.09±0.08 vs. 0.57±0.03, t=14.91, P<0.001; Protein: 0.21±0.04 vs. 0.12±0.03, t=4.41, P=0.070). The levels of IL-1β, IL-6, and TNF-α in the supernatant of si-SIRT6/si-SIRT6 NC-transfected THP-1 cells increased significantly by MUS ( P<0.05), and the levels of IL-1β, IL-6, and TNF-α in the supernatant of cells further increased by MUS ( P<0.05). The levels of IL-1β, IL-6 and TNF-α in the supernatant of si-SIRT6-transfected THP-1 cells increased significantly compared with those of si-SIRT6 NC-transfected THP-1 cells ( P<0.05). The gene expression of p62 in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells significantly decreased by MUS ( P<0.05), the gene expression of ATG-5, Beclin-1, LAMP-1 and LC3B in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells significantly increased by MUS ( P<0.05). The gene expression of p62 in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells further decreased by RAPA ( P<0.05), the gene expression of ATG-5, Beclin-1, LAMP-1 and LC3B in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells further increased by RAPA ( P<0.05). The gene expression level of p62 in si-SIRT6 transfected THP-1 cells significantly decreased than that in si-SIRT6 NC transfected THP-1 cells ( P<0.05), and the gene expression level of ATG-5, LC3B, Beclin-1 and LAMP-1 significantly increased than that in si-SIRT6 NC transfected THP-1 cells ( P<0.05). The protein expression of p62 in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells significantly decreased by MUS ( P<0.05), the protein expression of ATG-5 and LC3B Ⅱ/LC3BⅠ protein in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells significantly increased by MUS ( P<0.05). The protein expression of p62 in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells further decreased by RAPA P<0.05), the protein expression of ATG-5 and LC3B Ⅱ/LC3BⅠ in si-SIRT6/si-SIRT6 NC-transfected THP-1 cells further increased by RAPA ( P<0.05). The protein expression level of p62 in si-SIRT6 transfected THP-1 cells significantly decreased than that in si-SIRT6 NC transfected THP-1 cells ( P<0.05), and the protein expression level of ATG-5 and LC3B Ⅱ/LC3BⅠ significantly increased than that in si-SIRT6 NC transfected THP-1 cells ( P<0.05). Conclusion:Low expression of SIRT-6 gene can promote inflammatory reaction and autophagy in monocytes, and Monosodium urate and autophagy agonist rapamycin can aggravate inflammatory reaction and autophagy.