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*

Basilar artery trunk aneurysms (BTAs) are relatively rare, with poor natural prognosis, high disability and mortality rates. The treatment options for BTAs includes conservative treatment, craniotomy, and endovascular treatment. Due to the deep anatomical structure, rich perforating vessels, and complex pathological structure of the basilar artery, craniotomy is more difficult. There is currently no consensus on the treatment of BTAs. This article reviews the current treatment status of BTAs, aiming to provide reference for clinical work.

Objective:To conduct quality evaluation and content analysis of adult postoperative nausea and vomiting (PONV) guidelines, so as to provide reference for management of clinical PONV.Methods:Web of Science, Embase, PubMed, UpToDate, SinoMed, Wanfang Database, China National Knowledge Infrastructure, VIP, domestic and foreign clinical practice guidelines and related professional association websites were systematically searched, and the search period was from database establishment to May 6, 2022. Four researchers independently evaluated the guidelines that met the inclusion and exclusion criteria using a clinical guideline research and evaluation system, and summarized the recommendations of the guidelines.Results:Finally, a total of 15 guidelines were included in this study. The overall quality evaluation of the guide was 3 A-level recommendations and 12 B-level recommendations. The average standardization percentages for 6 areas were 81.57% for scope and purpose, 49.91% for participants, 65.38% for rigor, 89.54% for clarity, 34.86% for applicability and 55.42% for independence. A total of 18 recommendations were summarized from five aspects, such as team and organizational management, PONV risk assessment, baseline risk reduction, multimodal prevention of PONV and effectiveness evaluation and monitoring.Conclusions:The guidelines for PONV management mainly come from foreign countries. It is recommended that clinical personnel should learn from foreign guidelines and combine them with domestic clinical situations to localize the recommended opinions and guide the development of clinical practice.

Objective:To evaluate the role of glucagon-like peptide-1 receptor (GLP-1R) signaling pathway in sevoflurane postconditioning-induced attenuation of myocardial ischemia-reperfusion (I/R) injury in rats.Methods:Eighty SPF healthy adult male Sprague-Dawley rats, aged 8-10 weeks, weighing 300-340 g, were divided into 4 groups ( n=20 each) by a random number table method: sham operation group (group S), myocardial I/R group (group I/R), myocardial I/R plus sevoflurane postconditioning group (group ISP), and myocardial I/R plus sevoflurane postconditioning plus GLP-1R antagonist group (group ISPE). The myocardial I/R injury model was developed by ligating the left anterior descending branch of the coronary artery for 40 min followed by 2-h reperfusion in anesthetized rats.In group ISP, the rats inhaled 2.4% sevoflurane for 15 min starting from the beginning of reperfusion.In group ISPE, GLP-1R antagonist Exendin9-39 50 μg/kg (in 1 ml 0.9% normal saline) was intraperitoneally injected once a day from 28 days before development of the model, the last intraperitoneal injection was completed at 40 min before inhalation of sevoflurane, and the other treatments were the same as those previously described in group ISP.Blood samples from the abdominal aorta were collected immediately after reperfusion to determine the serum levels of creatine kinase-MB (CK-MB) and lactate dehydrogenase (LDH). Then the rats were sacrificed, and the hearts were obtained for microscopic examination of the histopathological changes of myocardial tissues (by HE staining) and the ultrastructure of cardiomyocytes (with a transmission electron microscope) for determination of the myocardial infarct size (TTC staining), expression of GLP-1R in myocardium (by immunohistochemical staining), expression of GLP-1R, cyclic adenosine monophosphate (cAMP), protein kinase A (PKA), cAMP response element-binding protein (CREB), phospho-CREB (p-CREB), B-cell lymphoma-2 (Bcl-2) and Bcl-2 associated x protein (Bax) in myocardium (by Western blot). The ratios of p-CREB/CREB and Bcl-2/Bax were calculated. Results:Compared with group S, the serum levels of CK-MB and LDH and percentage of myocardial infarct size were significantly increased, the expression of GLP-1R was up-regulated, the expression of cAMP and PKA was down-regulated, and the p-CREB/CREB ratio and Bcl-2/Bax ratio were decreased in group I/R ( P<0.05). Compared with group I/R, the serum levels of CK-MB and LDH and percentage of myocardial infarct size were significantly decreased, the expression of GLP-1R, cAMP and PKA was up-regulated, and p-CREB/CREB ratio and Bcl-2/Bax ratio were increased in group ISP ( P<0.05). Compared with group ISP, the serum levels of CK-MB and LDH and percentage of myocardial infarct size were significantly increased, the expression of GLP-1R, cAMP and PKA was down-regulated, and the p-CREB/CREB ratio and Bcl-2/Bax ratio were decreased in group ISPE ( P<0.05). Conclusions:Sevoflurane postconditioning can attenuate myocardial I/R injury by activation of GLP-1R signal pathway and inhibition of cardiomyocyte apoptosis in rats.

OBJECTIVE:To establish the method for simultaneous determination of 6 residual organic solvents in Xingnaojing injection,such as methanol,ethanol,isopropanol,n-butanol,ethyl acetate and acetonitrile.METHODS:Headspace GC method was adopted.The determination was performed on DB-624 capillary column by temperature programming with the injector temperature of 200 ℃;flame ionization detector was adopted with the temperature of 250 ℃;carrier gas was nitrogen with flow rate of 25 mL/min and split ratio of 35 ∶ 1;headspace sampling size was 1 mL,and heating temperature of headspace sampling was 80 ℃;equilibrium time was 15 min.RESULTS:The linear ranges of methanol,ethanol,isopropanol,n-butanol,ethyl acetate and acetonitrile were 15.00-240.00 μg/mL (r =0.999 9),25.00-400.00 μg/mL (r =0.999 9),25.00-400.00 μg/mL (r =0.999 9),25.00-399.99 μg/mL(r=0.999 9),25.00-399.99 μg/mL(r=0.999 8) and 5.00-80.00 μg/mL(r=0.999 9).The LOQ were 5.98,3.94,2.05,2.13,1.39,1.24 μg/mL,and the LOD were 2.01,2.11,1.18,1.56,1.15,0.01 μg/mL,respectively.RSDs of precision tests were all less than 2.0％,stability and repetitive tests only ethyl acetate was detected,RSD＜2.0％;the recoveries were 93.59％-99.02％ (RSD=2.62％,n=6),92.42％-98.40％ (RSD=2.43％,n=6),94.81％-104.64％ (RSD=3.47 ％,n=6),94.56％-106.73％ (RSD=4.21％,n=6),97.04％-106.33％(RSD=3.50％,n=6)and 98.40％-107.97％ (RSD=3.37％,n=6).CONCLUSIONS:The method is specific,rapid,simple and accurate,and can be used for simultaneous determination of 6 residual organic solvents in Xingnaojing injection.

Objective: To investigate the expressions and clinical significances of paired box gene 2 (Pax2) and cyclin D1 protein in advanced ovarian serous carcinoma. Methods: From January 2003 to December 2013, the pathologic tissues of 202 patients with advanced ovarian serous cancer (Ⅲ-Ⅳ) who underwent initial cytoreductive surgery were collected. The expressions of Pax2 and cyclin D1 protein were detected by immunohistochemistry in tissue microarray. The relationships of their expressions with the clinicopathological features and prognosis of the patients were analyzed. Results: The positive rate of Pax2 protein expression of the 202 patients with ovarian serous adenocarcinoma was 24.8% (50/202) and that of cyclin D1 was 25.2% (51/202). The expressions of Pax2 and cyclin D1 were not significantly related with age, clinical stage and pathological grade of ovarian serous adenocarcinoma patients (P>0.05). The median overall survival (OS) time of Pax2-negative patients was 53 months and the progression-free survival (PFS) time was 29 months. The median OS time of Pax2-positive patients was 66 months and PFS time was 33 months, the OS of Pax2-negative patients was significant different from that of Pax2-positive patients (χ²=4.06, P=0.04). The median PFS time of Pax2-negative patients was not significant different from that of Pax2-positive patients (χ²=2.43, P=0.11). The median OS time of cyclin D1-negative patients was 62 months and PFS time was 30 months. The median OS time of cyclin D1-positive patients was 48 months and PFS time was 22 months. The median OS time of cyclin D1-negative patients was significantly different from that of cyclin D1-positive patients (χ²=4.71, P=0.03), while the median PFS time of cyclin D1-negative patients was marginally different from that of cyclin D1-positive patients (χ²=0.59, P=0.41). Multivariate analysis showed that the expression of Pax2 was an independent factor of the prognosis for patients with ovarian serous adenocarcinoma (RR=0.597, 95% CI 0.371-0.962, P<0.034). Conclusion The expressions of Pax2 and cyclin D1 are associated with the prognosis of patients with advanced ovarian serous adenocarcinoma while Pax2 is an independent prognostic factor.

Objective: To explore the expressional differences between paired box genes 2(Pax2) and 8 (Pax8) protein in different kinds of epitheliums and tumors, and to investigate the clinicopathologic significance. Methods: Expression levels of Pax2 and Pax8 protein were detected in 75 cases of different human epithelium tissues and 255 cases of different tumors on tissue microarray by immunohistochemistry. Results: Pax2 and Pax8 selectively expressed in different tissues. The positive rates of Pax8 protein expressed in the normal epithelium of the thyroid, urinary system and female reproductive system were 100% (2/2), 60.0% (3/5) and 76.9% (10/13), respectively. The positive rates of Pax2 expressed in the epithelium tissues of urinary system and the female reproductive system were 40.0% (2/5) and 38.5% (5/13) respectively. However, the expression of Pax2 protein was not detected in the normal thyroid epithelium. The positive rate of Pax8 protein expressing in the epithelium of reproductive system was significantly higher than that of Pax2 protein (P<0.05). The tumors derived from different tissues also expressed different levels of protein Pax2 and Pax8. The positive rates of Pax8 in renal cell carcinoma, thyroid carcinoma and endometrial adenocarcinoma were 65.2% (15/23), 66.7% (10/15) and 80.0% (4/5), respectively. The positive rates of Pax2 in renal cell carcinoma, thyroid carcinoma and endometrial adenocarcinoma were 34.8% (8/23), 13.3% (2/15) and 20.0% (1/5), respectively. The positive rates of Pax8 protein expressed in renal cell carcinoma, thyroid carcinoma and endometrial adenocarcinoma were significantly higher than those of Pax2 protein (P<0.05). The positive rates of Pax8 in ovarian serous carcinoma, endometrial carcinoma and clear cell carcinoma were 92.9% (26/28), 81.8% (9/11) and 82.4% (14/17), respectively. The positive rates of Pax2 in ovarian serous carcinoma, endometrial carcinoma and clear cell carcinoma were 28.6% (8/28), 9.1% (1/11) and 17.6% (3/17), respectively. The positive rates of Pax8 protein expressed in ovarian serous carcinoma, endometrial carcinoma and clear cell carcinomawere significantly higher than those of Pax2 protein (P<0.05). Conclusions Pax2 and Pax8 are specifically expressed in female reproductive system and uritany system. However, the positive expression of Pax8 is superior to that of Pax2. The combined expression of Pax8 and Pax2 can be used in the differential diagnosis of epithelial tumors derived from different origins.

Aim To the investigate the protective effect of ginsenoside Rg1 in Alzheimer's disease ( AD)-like neurotoxicity model induced by okadaic acid ( OKA) in the cellular level , and explore the mecha-nism preliminarily. Methods The PC12 cells model, simulate neurons, induced by OKA was given Rg1 (1, 5,10 μmol·L-1), and melatonin (Melat) 10 μmol· L-1 was given as a positive control. MTT and LDH were carried out to assess the cell viability and mortality. To detect the accumulation of ROS, the DCFH-DA fluores-cent probe was conducted. And to assess the change of the activity of a variety of antioxidant enzymes, various kits were used, including ABTS、CAT、SOD、GSH-Px and GSSG/GSH. Results Compared with the control group, the survival rate of PC12 cell in OKA group re-duces significantly, the mortality rate was increased sig-nificantly , the number of early apoptotic cells was in-creased significantly (P<0. 01). Oxidative stress-relat-ed indicators show that ROS accumulation within the cells of OKA group increases significantly ( P<0. 01 ) , and the total antioxidant capacity ( ABTS ) decreases significantly ( P < 0. 01 ) , the activity of peroxidase (Catalase, CAT) (P <0. 01), glutathione peroxidase (glutathione peroxidase, GSH-Px) and superoxide dis-mutase ( superoxide dismutase, SOD) decreased signifi-cantly ( P <0. 05 ) , the rate of GSSG/GSH increased significantly ( P <0. 01 ) . Compared with the model group, the different doses of Rg1 could improve the sur-vival rate and decrease the mortality rate of PC12 cell significantly in the group of OKA, and could decrease the level of the accumulation of ROS, improve the activ-ity of antioxidant enzymes. Conclusion Ginsenoside Rg1 can decrease PC12 cell apoptosis by exerting an-tioxidant effects, and protect the nerve cells in AD-like pathology model induced by OKA.

Objective: To investigate the effect of the gene interfering technology on fatty acid synthase (FAS) gene silencing for lipid contents in human hepatic cell line HepG2 and to study the lipid metabolism related gene expression in HepG2 cells. Methods: A total of 3 pairs of small interfering RNA (siRNA) targeting different sequences of FAS mRNA were synthesized as FAS-siRNA-1, FAS-siRNA-2 and FAS-siRNA-3, meanwhile, 2 controls were established as Blank control group, in which HepG2 cells were not treated, and Negative control group, in which HepG2 cells were transfected by non-effective siRNA. The mRNA, and protein expression levels of FAS in HepG2 cells were examined by real-time lfuorescence quantitative RCR and Western blot analysis to screen the most effective pair of siRNA for FAS gene silencing; and that speciifc siRNA was transtected to HepG2 cells for 48 hours to detect the intra-/extra-cellular TG, TC levels and the mRNA expression related to lipid metabolism in HepG2 cells. Results: The screening experiment indicated that FAS-siRNA-3 was most effective for FAS gene silencing. Compared with Blank control group, the mRNA and protein expressions in FAS-siRNA-3 transfected HepG2 cells (Transfected group)decreased to (52.33 ± 3.07) % and (51.57 ± 3.14) % respectively. Compared with Blank control group, Transfected group had the reduced intra-/extra-cellular TG levels and reduced extracellular TC level; while increased mRNA expression of hepatic lipase,P<0.0001 and decreased mRNA expression of TG transfer protein in HepG2 microsome,P<0.05. Conclusion: FAS gene silencing could signiifcantly decrease the intra-/extra- cellular TG level and extracellular TC level in HepG2 cells, those ifndings need to be conifrmed by furtherin vivo andin vitro studies.

The study reports the detection of neuroprotective effect of 10 kinds of coumarin derivatives and explores their possible mechanism. MTT method was used to screen the neuroprotective effect of 10 coumarin derivatives on neurotoxic agents (Aβ25-35 and rotenone) or OGD (oxygen-glucose deprivation). A compound with better protective effect was obtained. Then the effect of this compound on neurotoxic agents on PC12 was detected by the morphological observation. Furthermore, the effect of compound 3 on microglia with lipopolysaccharide (LPS) induced inflammation was detected. And the inflammatory factor was tested. Finally, direct free radical scavenging ability was detected. Compound 3 was found to be the best compound through three neurons toxic models. Not only compound 3 ameliorated cell viability reduced by three neurons toxic models, but also significantly inhibited the production of inflammatory factor (TNF-α and IL-1β). And its free radical scavenging ability is very good, especially the effect on superoxide anion, which is comparable with vitamin C. The significant scavenging effect of compound 3 on superoxide anion might be the mechanism of the neuroprotection. Compound 3 as a potential neural cell protective agent merits further investigation.