ObjectiveTo evaluate the safety/efficacy of compound Kushen injection （CKI） by zebrafish model and explore the possible mechanism. MethodsZebrafish were exposed to different concentrations of CKI solution， and the mortality rate after 24 h was calculated. After exposure to sublethal concentration （10） and safe dose concentration （0） for 24 h， the safety of CKI was evaluated based on acridine orange staining for the liver， liver area changes， and liver histological sections. The inflammatory bowel disease （IBD） model of zebrafish was established with 2，4，6-trinitrobenzenesulfonic acid sol （TNBS）. The efficacy of CKI in the treatment of IBD was evaluated by the changes in the area of neutral red staining， the number of neutrophils， the area of alcian blue staining， and the contents of tight junction protein （Occludin）， zonula occludens-1 （ZO-1）， tumor necrosis factor（TNF）-α， and prostaglandin E₂（PGE₂） in the intestine of zebrafish. The mechanism of CKI in the treatment of IBD was predicted by network pharmacology and verified by real-time polymerase chain reaction（Real-time PCR）. ResultsIn the safety evaluation， compared with the blank group， the sublethal concentration of CKI could cause liver cell apoptosis， liver area reduction， loose and disordered arrangement of liver cell structure， obvious vacuolation， and other pathological characteristics of zebrafish， while these indicators showed no significant changes under safe dose conditions. In the effectiveness evaluation， compared with the model group， the safe dose of CKI could increase the neutral red staining area of the intestine in a dose-dependent manner and improve the intestinal phagocytosis function. It could reduce the accumulation of intestinal neutrophils， increase the alcian blue staining area， enhance intestinal goblet cell secretion， improve the contents of Occludin and ZO-1， and decrease the contents of TNF-α and PGE₂. Network pharmacology analysis identified 288 potential targets for CKI treatment of IBD. The top five targets obtained by protein-protein interaction （PPI） network analysis were epidermal growth factor receptor A（EGFRA）， protein kinase B1（Akt1）， heat shock protein 90（HSP90AA1）， homologous oncogene of avian sarcoma virus（SRC）， and protooncogene （JUN）. Kyoto encyclopedia of genes and genomes（KEGG） results showed that CKI may be related to the Wnt signaling pathway and cholinergic synaptic pathway in the treatment of IBD， and Real-time PCR results verified the above pathways. ConclusionExcessive use of CKI can induce obvious liver injury in zebrafish， while the rational use of CKI does not cause obvious toxic reactions and can achieve a therapeutic effect on IBD by regulating the Wnt pathway.

Objective:To explore the incidence of low anterior resection syndrome (LARS) in patients undergoing sphincter-preserving surgery for rectal cancer and analyze related factors.Methods:This study was a cross-sectional survey. From 2021 to 2023, convenience sampling was used to select 195 patients with rectal cancer who underwent sphincter-preserving surgery at Peking University Third Hospital as participants. The patients were surveyed using the General Information Questionnaire, LARS Scale, Visual Analog Score, and Chinese version of Insomnia Severity Index.Results:A total of 195 questionnaires were distributed, and 156 valid questionnaires were collected, with a valid response rate of 80.00% (156/195). The incidence of LARS in 156 rectal cancer patients with sphincter-preserving surgery was 36.54% (57/156), and the incidence of severe LARS was 15.38% (24/156). Binomial Logistic regression analyses showed that gender ( OR=0.445, P=0.034) and preoperative neoadjuvant chemoradiotherapy ( OR=6.343, P<0.01) were influencing factors for the occurrence of LARS in patients with rectal cancer after sphincter-preserving surgery. Preoperative neoadjuvant chemoradiotherapy ( OR=3.322, P=0.047) and intraoperative prophylactic stoma ( OR=4.855, P=0.035) were influencing factors for severe LARS. LARS score was positively correlated with anxiety score ( r=0.238, P=0.003) and total insomnia score ( r=0.168, P=0.036) in patients with rectal cancer who underwent sphincter-preserving surgery. Conclusions:Preoperative neoadjuvant chemoradiotherapy is an independent risk factor for postoperative LARS and severe LARS in rectal cancer patients undergoing sphincter-preserving surgery. LARS is correlated with patients' anxiety and insomnia.

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 effect and mechanism of IL-17 on heart failure(HF)in hy-pertensive rats based on NF-κB/sarco-endoplasmic reticulum calcium ATPase 2(SERCA2)signa-ling pathway.Methods Thirty SPF male spontaneously hypertensive rats(SHR)aged 6-8 weeks were divided into control group,model group,phosphate buffer salt(PBS)solution injec-tion group(PBS group),IL-17 protein injection group(IL-17 group)and IL-17 and antibody injec-tion group(IL-17+IgG group),with 6 animals in each group.Hypertensive HF model was estab-lished,and corresponding agents were applied to the PBS group,IL-17 group and IL-17+IgG group intraperitoneally,respectively.The role of IL-17,NF-κB and SERCA2 in hypertensive HF was studied with HE staining,immunohistochemical assay,Western blotting,RT-qPCR and ELISA.Results Significantly higher serum levels of NT-proBNP and IL-17,enhanced myocardial expression of IL-17 mRNA and NF-κB protein,lower serum VEGF level,and down-regulated pro-tein level of SERCA2 in heart tissue were observed in the model group and the PBS group when compared with the control group(P＜0.01).The IL-17 group had obviously higher serum NT-proBNP and IL-17 levels and myocardial expression of IL-17 mRNA and NF-κB protein,and reduced serum VEGF level and SERCA2 protein level in heart tissue than the model group(P＜0.01).IL-17+IgG treatment resulted in notably lower serum IL-17 level and myocardial NF-κB protein level when compared with those of model group(8.98±1.20 vs 11.19±1.22,0.88±0.03 vs 0.93±0.03,P＜0.01),and also resulted in remarkably reduced serum levels of NT-proBNP and IL-17 and myocardial expression of IL-17 mRNA and NF-κB protein but increased serum VEGF level and SERCA2 protein level in heart tissue when compared with the IL-17 group(P＜0.01).The heart rate,SBP,IVSd,LVPWd,LVEDD and LVESD were significantly lower,while LVFS was notably higher in the IL-17+IgG group than the model group and IL-17 group(P＜0.01).The IL-17+IgG group had obviously higher LVEF than the IL-17 group[(70.81±6.50)％vs(62.77±5.43)％,P＜0.01].Conclusion IL-17/NF-κB/SERCA2 signaling pathway is involved in the regulation of inflammatory response after hypertensive HF,and inhibiting IL-17 can effective-ly improve the cardiac dysfunction caused by hypertensive HF.

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 summarize the clinical features, electroencephalogram (EEG) and magnetoencephalogram (MEG) of patients with pure paroxysmal kinesigenic dyskinesia (PKD) and PKD with epilepsy, so as to better distinguish them and guide the treatments.Methods:The clinical data of 200 patients diagnosed with PKD in the Outpatient Department of Xuanwu Hospital, Capital Medical University from 2000 to 2023 were analyzed retrospectively. The patients were divided into 2 groups: pure PKD (174 cases) and PKD with epilepsy (26 cases) according to whether accompanied by epilepsy. The differences in clinical features, drug therapy, EEG and MEG were compared between the 2 groups.Results:The clinical features of the 2 groups were essentially similar, and the proportion of PKD dyskinesia induced by emotional stress in the pure PKD group (54/174, 31.03%) was higher than that in the PKD with epilepsy group (2/26, 7.69%; χ 2=5.010, P=0.025). In terms of pharmacological response, carbamazepine was the most commonly used medication in both groups, but patients with PKD with epilepsy may need a higher therapeutic dosages (0.2-0.4 g/d, and gradually increased to 0.8 g/d) to effectively manage both dyskinesia and seizures. Regarding the EEG and MEG, the proportion of EEG abnormalities was higher in PKD patients with epilepsy, mainly manifested as focal spikes [1/70(1.43%) vs 9/21(42.86%), χ 2=24.268, P<0.001], together with aberrant MEG discharge (4/18 vs 3/5, χ 2=1.155, P=0.282). The MEG dipoles were mainly distributed in the brain regions close to the frontal lobe and central region. Conclusions:The clinical manifestations of motor symptoms of pure PKD and PKD with epilepsy are similar, and carbamazepine remains the most effective treatment. PKD patients with epilepsy have a higher proportion of abnormal EEG, mainly manifested as focal spikes, and are more likely to show abnormal discharge of MEG, which could be used to distinguish them.

A suitable animal model of hypertrophic scar is of great importance for studying pathogenesis of hypertrophic scar and exploring more efficacious treatment. Researchers have tried to establish hypertrophic scar models in various animals, and the rabbit ear hypertrophic scar model is the most widely used one. In recent years, novel models such as the rat tail hypertrophic scar model and ethanol-induced rabbit ear hypertrophic scar model have been proposed. These models inherit the advantages of traditional models while simplifying the manufacturing process, presenting significant research potential. This paper provides the research advances on animal models of hypertrophic scar in nude mice, mice, rats, rabbits, pigs, guinea pigs, and dogs, offering insights for the researchers in selecting appropriate models, refining existing models, or creating new animal models.

ObjectiveTo investigate the therapeutic effect and mechanism of coptisine on chronic atrophic gastritis （CAG） in rats based on the phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt）/mammalian target of rapamycin （mTOR） signaling pathway. MethodA CAG rat model was induced by multiple factors， including sodium salicylate， N-methyl-N′-nitro-N-nitrosoguanidine （MNNG）， and irregular feeding. The successfully modeled rats were randomly divided into the model group， folic acid group， and high- and low-dose coptisine groups. The high- and low-dose coptisine groups were given coptisine （50， 10 mg·kg^-1， respectively）， and the folic acid group was given folic acid at 2 mg·kg^-1 for 60 days. The pathological changes were detected by hematoxylin-eosin （HE） staining. The ultrastructure of gastric mucosal cells was observed by electron microscopy. Serum pepsinogen Ⅰ （PGⅠ）， pepsinogen Ⅱ （PGⅡ）， and PGⅠ/PGⅡ ratio （PGR） were detected by immunoturbidimetry. Serum gastrin-17 （G-17） level was detected by radioimmunoassay. The content of interleukin-6 （IL-6）， tumor necrosis factor-α （TNF-α） and interleukin-1β （IL-1β） in serum of rats was detected by enzyme-linked immunosorbent assay （ELSIA）. Western blot analysis was used to detect the expression levels of TGF-β₁， PI3K， phosphorylated-Akt （p-Akt）， mTOR， and phosphatase and tensin homolog deleted on chromosome 10 （PTEN） in gastric mucosa. The mRNA levels of TGF-β₁， PI3K， Akt， mTOR， PTEN， microtubule-associated protein light chain 3Ⅱ （LC3Ⅱ）， and Beclin-1 were detected by real-time quantitative polymerase chain reaction （Real-time PCR）. ResultCompared with the normal group， the model group showed atrophy and reduced number of intrinsic glands in the gastric mucosal tissues， as well as inflammatory cell infiltration. The ultrastructure of gastric mucosal cells in the model group displayed nuclear condensation， reduced and swollen mitochondria， and abnormal structure. The serum levels of G-17， PGⅠ， PGR， and the protein and mRNA levels of PTEN in gastric tissues were significantly lower in the model group （P<0.01）， while serum levels of IL-6， IL-1β， TNF-α， and the protein and mRNA levels of TGF-β₁， PI3K， Akt， and mTOR in gastric tissues were significantly higher （P<0.01）. Compared with the model group， various drug intervention groups showed different degrees of improvement in pathological damage and gastric mucosal cell ultrastructure， significantly increased serum levels of G-17， PGⅠ， and PGR （P<0.05，P<0.01）， and significantly decreased levels of IL-6， IL-1β， and TNF-α （P<0.05，P<0.01）. The high-dose coptisine group significantly downregulated the protein and mRNA levels of TGF-β₁， PI3K， Akt， and mTOR （P<0.05，P<0.01）. ConclusionBerberine has a therapeutic effect on CAG in rats， possibly exerting a protective effect on gastric mucosa by inhibiting inflammation and blocking the PI3K/Akt/mTOR signaling pathway.

Objective:To explore the application value of PAX1/JAM3 methylation detection by cervical self-collected specimen in cervical cancer screening and the management of premenopausal and postmenopausal women.Method:This study is a single center cross-sectional study. From January 2023 to November 2023, cervical self-collected and physician-collected specimens at the colposcopy clinic were detected the PAX1/JAM3 methylation (PAX1 m/JAM3 m) testing. The consistency between self-collected and physician-collected specimens for PAX1 m/JAM3 m detection were compared based on histopathology. In addition, the clinical efficacy of methylation detection with high-risk human papillomavirus (hrHPV), liquid-based cytology (LBC), and their combination for cervical cancer screening were compared in the study. Results:A total of 301 women were recruited to undergo referral colposcopy examination, and statistical analysis was conducted on 272 women with pathological and diagnostic information. Among them, 102 cases (37.5%) were diagnosed as normal cervical tissue or chronic cervicitis, 72 cases (26.4%) were cervical intraepithelial neoplasia grade 1 (CIN1), 43 cases (15.8%) were CIN2, 29 cases (10.7%) were CIN3, and 26 cases (9.6%) were cervical cancer. According to the minimum quantity formula, they were divided into a consistency cohort of 81 participants and a validation cohort of 191 participants. The consistency between cervical self-collected and physician-collected specimens for detecting PAX1 m/JAM3 m. Results from spearman correlation analysis showed a positive correlation between the self-collected and physician-collected results of PAX1 m/JAM3 m detection, and the correlation coefficient R values are 0.858 ( P<0.001) and 0.828 ( P<0.001). The sensitivity and specificity of PAX1 m/JAM3 m detection for diagnosing CIN2 or more severe lesions (CIN2+) were 77.6% [95% confidence interval ( CI) 65.3%-86.4%] and 87.2% (95% CI 80.5%-91.9%), respectively. In clinical performance comparison, the sensitivity of PAX1 m/JAM3 m combined with HPV16/18 detection, 89.7% (95% CI 79.2%-95.2%), was the same as that of hrHPV detection in CIN2+and 96.0% (95% CI 80.4%-99.3%) in CIN3+, which is higher than 92.0% (95% CI 75.0%-97.8%) of hrHPV and 82.6% (95% CI 62.9%-93.0%) of LBC or the combination of sPAX1 m/JAM3 m and LBC low-grade and higher squamous intraepithelial lesion testing [87.0% (95% CI 67.9%-95.5%)]. Conclusions:Self-collected specimens by women for detection of PAX1 and JAM3 methylation as a promising screening tool for cervical cancer has operational and clinical feasibility. The methylation test can optimize the current cervical cancer screening plan, reduce the number of referral women with false positive diagnosis to colposcopy, and is of great significance for reducing fertility protection and preventing missed diagnosis in women of childbearing age.

Objective To investigate the reliability and validity of the assessment tools of Brief ICF Core Sets for Arthroplasty of Knee Osteoarthritis in Perioperative Period(ICSAKOPP). Methods From May,2022 to April,2023,320 patients undergoing knee arthroplasty were selected in Peking University Third Hospital,China-Japan Friendship Hospital,Peking University First Hospital and Chinese PLA General Hospital.Trained assessors used Brief ICSAKOPP to evaluate all enrolled patients before arthroplasty,three days(±one day)after arthroplasty,three weeks(±one week)after arthroplasty,and three months(±one month)after ar-throplasty.Western Ontario and McMaster Universities Osteoarthritis Index(WOMAC)scores were recorded at the same time.Five professionals were asked to score all the items of Brief ICSAKOPP,and the content validity index(CVI)was caculated. Results A total of 64 cases were dropped down.CVI of all the items of the Brief ICSAKOPP were above 0.8,with a av-erage CVI of the scale of 0.938.The Cronbach's α coefficient of the Brief ICSAKOPP was 0.813.There was a moderate correlation(r=0.681,P<0.001)between the overall Brief ICSAKOPP and WOMAC scores,as well as body functional dimension score(r=0.668,P<0.001)and activities and participation dimension score(r=0.657,P<0.001). Conclusion Brief ICSAKOPP is good in content validity,internal consistency reliability and criterion validity.