For patients with moderate-to-severe functional mitral regurgitation (FMR) who continue to experience heart failure symptoms despite optimized medical and device therapy, transcatheter mitral valve edge-to-edge repair (TEER) is increasingly becoming a reliable treatment option. With the continuous research and development and improvement of TEER-related devices, there are currently dozens of domestically developed TEER devices undergoing clinical trials in China. In this study, we report the first case of a patient with severe FMR treated with the X-Clip® TEER system. The patient, a 60-year-old male, suffered FMR attributed to dilated cardiomyopathy. Preoperative transthoracic echocardiography showed severe mitral regurgitation (4+). He underwent percutaneous repair using the X-Clip® system, and immediate postoperative ultrasound showed mild mitral regurgitation. At the 1-month follow-up, the patient’s symptoms and New York Heart Association (NYHA) functional class improved, and a follow-up transthoracic echocardiogram showed mild mitral regurgitation (1+).

Ischemic stroke is one of the important causes of disability and death among middle-aged and elderly people in China,and there are many complicated problems from diagnosis to treatment.At present,vascular recanalization has become the most important treatment for ischemic stroke.However,the prognosis of patients is still not ideal after vascular recanalization treatment alone.At the same time,the therapeutic effect of neuroprotective drugs targeting a single target is still not significant.Annexin A5 has many biological functions,such as anticoagulation,anti-inflammation,protection of neuron survival and so on,and can be used for neuroprotective therapy such as reducing reperfusion injury after cerebral vascular recanalization.Annexin A5 can be used in the diagnosis of stroke and the construction of targeted vectors because of its close binding with phosphatidylserine.The authors summarized the multiple functions of Annexin A5,and analyzes its possible effects on ischemic stroke,so as to provide reference for the follow-up study.

Japan is one of the main trading partners for the import and export of experimental animals in China,and its quarantine and supervision policies for the import and export of experimental animals are very detailed and strict.This article takes experimental dogs,cats,and monkeys as examples to provide an in-depth analysis of the quarantine and supervision policies for the main experimental animals exported to Japan.At the same time,it reflects on the current laws and regulations,import and export management method,standards,biosafety,breeding and management status,as well as the import and export business status of experimental animals in China.Suggestions are provided in improving the laws and regulations,import and export management method,ensuring national biosafety,improving the management level of experimental animal breeding,and promoting the import and export trade of experimental animals,in order to provide reference for comprehensively improving the production,use,and breeding management level of experimental animals in China and strengthening the trade between China and Japan.

Objective:To investigate the correlation between hearing loss and microvascular complications in diabetes.Methods:This cross-sectional study conducted the data from 572 patients with diabetes hospitalized in the Endocrinology Department of the General Hospital of Southern Theater Command from September 2022 to July 2023. All participants underwent electrical audiometry and acoustic immittance in the ENY department. Based on the audiometric results, participants were categorized into normal hearing group and hearing loss group. Additionally, 572 non-diabetic patients from the outpatient department were enrolled as the non-diabetic group. The general information and laboratory results were collected and compared using t test, rank sum test or χ2 test. Binary logistic regression analysis was used to evaluate the association of diabetic hearing loss with diabetic kidney disease(DKD), diabetic retinopathy (DR), and diabetic peripheral neuropathy (DPN). Results:Among 572 patients with diabetes, 429 suffered from hearing loss and 143 were normal. χ2 test showed significant differences in combined DKD and DPN between two groups, but not in DR. Multivariate binary logistic regression analysis identified DKD and DPN as risk factors for hearing loss, but no correlation was found with DR. Conclusion:Diabetic patients with DKD or DPN should be monitored for potential hearing loss. Early screening and treatment are crucial to prevent severe hearing impairment.

Objective To investigate the experience of intrauterine device(IUD)removal in patients with cervical cancer after radiotherapy.Methods A total of 23 patients with cervical cancer after radiotherapy underwent abdominal ultrasound guided hysteroscopic removal of IUD in our department from January 2020 to December 2022.For vaginal and/or cervical adhesions,blunt separation of adhesions was performed by using hysteroscope head or curved forceps under abdominal ultrasound guidance.If it was difficult to separate the adhesions for hysteroscope head entering the uterine cavity,a probe was inserted into the uterine cavity under ultrasound guidance,and the cervical canal was gradually expanded to 6-caliber dilation rod.Then the hysteroscope was inserted again into the uterine cavity.For obvious cervical atrophy that was tough in which cervical forceps could not be used to clamp the cervix,a 1-0 absorbable suture line was used to suture the anterior and/or posterior lips of the atrophied cervix at the top of the vagina,with an assistant firmly pulling and fixing the cervix.Results There were 4 cases of vaginal partial adhesions and cervical contracture,10 cases of cervical contracture,and remaining 9 cases having no vaginal adhesions and cervical contracture.Under hysteroscopy,there were 3 cases of cervical adhesions,2 cases of endometrial polyps,1 case of submucosal uterine fibroids,2 cases of uterine abscess,2 cases of incarcerated IUD,and remaining 13 cases having normal uterine cavity morphology.All the 23 cases of IUD were successfully removed by using abdominal ultrasound guided hysteroscopy(circular shaped in 12 cases,uterine shaped in 6 cases,V-shaped in 2 cases,Y-shaped in 1 case,T-shaped in 1 case,and umbrella shaped in 1 case).The surgical time was(19.2±10.9)min,and there were no complications such as false passage formation,uterine perforation,organ damage,massive vaginal bleeding,transurethral resection of the prostate syndrome,infection,embolism,or shock.The 23 cases were followed up for 2-24 months postoperatively,with a median of 12 months.One case continued concurrent radiotherapy and chemotherapy,3 cases continued post-loading radiotherapy,1 case continued chemotherapy,and 2 cases received targeted treatment(distant metastasis).The remaining 16 cases recovered well in regular reviews without complications such as abdominal pain,fever,or vaginal bleeding.Conclusions If the size and location of the cancer lesion do not affect the removal of IUD after radiotherapy for cervical cancer,it should be removed as soon as possible.The application of abdominal ultrasound guided hysteroscopy in IUD removal in patients with cervical cancer after radiotherapy is safe and feasible to a certain extent.

Objective:To explore the clinical effects of early rehabilitation treatment after repair surgery of skin and soft tissue defects accompanied by extensor tendon injury on the back of hand.Methods:This study was a retrospective non-randomized controlled study. From February 2015 to February 2023, 24 patients (15 males and 9 females, aged 12-55 years) with skin and soft tissue defects accompanied by extensor tendon injury on the back of hand, who met the inclusion criteria and were repaired with flap transplantation and tendon grafting or tendon anastomosis, were admitted to the First Affiliated Hospital of Air Force Medical University. According to different intervention time for postoperative rehabilitation treatment of patients, the patients were divided into conventional rehabilitation group and early rehabilitation group, with 12 cases in each group. Patients in early rehabilitation group received rehabilitation treatment immediately after surgery under the rehabilitation guidance of specialized rehabilitation physicians based on the characteristics of different postoperative periods. Patients in conventional rehabilitation group began rehabilitation treatment from the third week after surgery, and their rehabilitation treatment was the same as that of patients in early rehabilitation group from the second week after surgery. The patients in 2 groups were treated in the hospital until the sixth week after surgery. The occurrence of flap vascular crisis and tendon rupture were observed within 6 weeks after surgery. After 6 weeks of surgery, the manual muscle test was used to measure the pinching force between the index finger and thumb, lateral pinching force, three-point pinching force, and grip force of the affected hand; the total action motion method was used to evaluate the finger joint range of motion of the affected hand, and the excellent and good ratio was calculated; the Carroll upper extremity function test was used to score and rate the function of the affected hand.Results:Within 6 weeks after surgery, only 1 patient in conventional rehabilitation group suffered from venous crisis, and the flap survived after the second surgical exploration and anastomosis of blood vessels; there was no occurrence of tendon rupture in patients of 2 groups. After 6 weeks of surgery, there were no statistically significant differences in pinching force between the index finger and thumb, lateral pinching force, three-point pinching force, or grip force of the affected hand between the two groups of patients ( P>0.05); the excellent and good ratio of the finger joint range of motion of the affected hand of patients in early rehabilitation group was 11/12, which was higher than 7/12 in conventional rehabilitation group, but there was no statistically significant difference ( P>0.05); the affected hand function score of patients in early rehabilitation group was 90±6, which was significantly higher than 83±8 in conventional rehabilitation group ( t=2.41, P<0.05); the function rating of the affected hand of patients in early rehabilitation group was obviously better than that in conventional rehabilitation group ( Z=2.04, P<0.05). Conclusions:Early rehabilitation treatment for patients with skin and soft tissue defects accompanied by extensor tendon injury on the back of hand after repair surgery can improve hand function, but it would not increase surgery related complications, which is worthy of clinical promotion and application.

Objective To study the effect of miR-143-3p on pyroptosis of HCT-116 cells induced by LPS+ATP.Methods The targeting relationship between miR-143-3 p and TLR2 gene was detected by dual luciferase.The pyroptosis model was established after transfection of miR-143-3p mimic.Cell apoptosis was detected by flow cytometry,and the activity of Caspase-1 and LDH was detected by biochemical method.The levels of IL-1β and IL-18 were detected by ELISA.The mRNA levels of NF-κB,TLR2,NLRP3 and GSDMD were detected by q-PCR.The expression of NLRP3 and ASC was detected by immunofluorescence.The protein expressions of TLR2,GS-DMD,p-NF-κB p65 and cleave Caspase-1 were detected by Western blot.Results Dual luciferase assay showed that miR-143-3p targeted TLR2 expression.The expressions of NF-κB,TLR2,NLRP3,GSDMD mRNA and TLR2,GSDMD,p-NF-κB p65,cleave Caspase-1,ASC,NLRP3 protein in miR-143-3p mimic group and si TLR2 group were lower than those in model group.The activity of Caspase-1 and the content of LDH,IL-1β and IL-18 decreased.Conclusion miR-143-3p regulates pyroptosis of ulcerative colitis cells by targeting TLR2 gene and regulating NF-κB/NLRP3/Caspase-1 signaling pathway.

AIM:To investigate the impact of aquaporin 4(AQP4)expression inhibition on autophagy and apoptosis in a mouse model of cerebral ischemia-reperfusion(I/R)injury,and to elucidate its underlying mechanism.METHODS:Cerebral I/R injury was induced in mice via transient middle cerebral artery occlusion(tMCAO).Totally 60 mice were randomly divided into sham group,I/R group,AQP4 inhibition group,and 3-methyladenine(3-MA)group,with 15 mice in each group.Among them,the mice in sham and I/R groups received intraperitoneal injections of normal saline,while those in AQP4 inhibition group and 3-MA group received intraperitoneal injections of AER-271(2 mg·kg-1·d-1)and AER-271+3-MA(2 mg·kg-1·d-1)for 3 d,respectively,once per day.Longa score was adopted to assess the neu-rological function,and to record changes in body weight.Cerebral infarction volume and histopathological alterations were evaluated using hematoxylin-eosin staining.Western blot analysis was performed to determine the levels of AQP4,LC3-Ⅱ,P62 and cleaved caspase-3,while the LC3-Ⅱ,P62,cleaved caspase-3 and NeuN(neuronal marker)colocalization and expression assessment were conducted with immunofluorescence.RESULTS:The mice in I/R and AQP4 inhibition groups exhibited extensive cerebral infarction,cerebral edema,and elevated Longa scores.However,in comparision to I/R group,the mice in AQP4 inhibition group showed significantly reduced cerebral infarct volume,cerebral edema vol-ume,and Longa score(P<0.05).Additionally,in contrast to sham group,the mice in I/R group displayed increased ex-pression of AQP4,LC3-Ⅱ and cleaved caspase-3(P<0.01),accompanied by decreased body weight and P62 expression(P<0.05 or P<0.01).Furthermore,compared with I/R group,the mice in both AQP4 inhibition group and 3-MA group demonstrated a decrease in the expression levels of AQP4,LC3-Ⅱ and cleaved caspase-3(P<0.05 or P<0.01),along with increased body weight and P62 expression(P<0.05 or P<0.01).Nonetheless,no significant differences were ob-served between AQP4 inhibition group and 3-MA group regarding Longa score,cerebral infarct volume,body weight,and the expression of AQP4,LC3-Ⅱ,cleaved caspase-3 and P62.CONCLUSION:Inhibition of AQP4 expression signifi-cantly reduces cerebral infarction area and nerve injury severity in tMCAO mice.Moreover,AQP4 expression inhibition decelerates autophagy and apoptosis after cerebral infarction,with the additional autophagy inhibitor showing no notable impact on the protective effect of AQP4 inhibition.

Objective To observe the value of deep learning combine with radiomics based on MRI for evaluating H3 K27 status of midline gliomas.Methods Totally 127 patients with diffuse midline glioma H3 K27-altered(H3-DMG)and 127 patients with midline glioblastoma(GBM)without H3 K27 mutation were retrospectively enrolled.The patients were randomly divided into training set(n=204)and test set(n=50)at the ratio of 8:2.U-Net neural network visual and radiomics features of tumors were extracted based on MRI,and a deep learning radiomics model was established,its value for evaluating H3 K27 status was observed.Results Based on training set,0.500 was obtained as the security score partition value for the model classification task.In test set,the median safety score of the obtained deep learning radiomics model for evaluating H3 K27 status of H3-DMG and GBM was 0(0,0)and 0.999(0.616,1.000),respectively,for the former was lower than for the latter(Z=-5.114,P＜0.001).The sensitivity,specificity,accuracy and area under the curve of deep learning radiomics model for evaluating H3 K27 status in training set was 93.14％,81.37％,87.25％and 0.953(95％CI[0.923,0.976]),respectively,while was 88.00％,80.00％,84.00％and 0.922(95％CI[0.829,0.986])in test set,respectively.Conclusion Deep learning radiomics based on MRI could accurately evaluate H3 K27 status of midline gliomas.

BackgroundPatients with schizophrenia and depressive disorders exhibit abnormalities in perceptual processing. Previous perceptual studies are mainly based on asking participants to fill in a questionnaire， and little research has been undertaken on objective behavior in patients with schizophrenia and depressive disorders. ObjectiveTo explore the behavioral changes in vibrotactile sense among patients with schizophrenia and depressive disorders， so as to enrich relevant findings in objective behavioral research. MethodsFrom March 2021 to September 2023， 33 patients with schizophrenia and 31 patients with depressive disorders in the outpatient and inpatient departments of Beijing Huilongguan Hospital and met the Diagnostic and Statistical Manual of Mental Disorders， fifth edition （DSM-5） diagnostic criteria were enrolled. And another 34 healthy controls were concurrently recruited at Beihang University and Beijing Huilongguan Hospital. Patients with schizophrenia were assessed using Positive and Negative Symptom Scale （PANSS）， and patients with depressive disorders were assessed using Hamilton Depression Scale-17 item （HAMD-17）. The vibrotactile sensitivity of the left hand in all participants was tested in a delay match-to-sample procedure， and the correct rate of vibrotactile delayed discrimination task was compared among the three groups. ResultsCompared with healthy controls， a reduction was found in the correct rates at index finger， middle finger and ring finger in patients with schizophrenia （P<0.01）， the average correct rate at five fingers in patients with schizophrenia （P=0.001）， and the correct rate at thumb in patients with depressive disorders （P=0.026）. No statistical difference was reported in correct rate of vibrotactile delayed discrimination task between patients with depression disorders and schizophrenia （P>0.05）. The average correct rate of vibrotactile sense in schizophrenia group was not significantly correlated with the duration of disease， age of onset， chlorpromazine equivalent doses and PANSS score （r=0.058、0.045、0.114、-0.194， P>0.05）. The average correct rate in depressive group was negatively correlated with age of onset （r=-0.415， P=0.020）， but not significantly correlated with the duration of disease and HAMD-17 score （r=-0.044， 0.142， P>0.05）. ConclusionPatients with schizophrenia and depressive disorders have impaired vibrotactile sense. The vibrotactile sense is impaired in index， middle and ring fingers among patients with schizophrenia， and in thumbs of patients with depressive disorders. Moreover， the impairment in patients with depressive disorders may be related to the age of onset. ［Funded by 2023 Hebei Provincial Graduate Innovation Funding Project （number， CXZZSS2023140）］