Rheumatoid arthritis （RA） is a common autoimmune disease characterised clinically by symmetrical joint pain， swelling， and stiffness. Long-term chronic synovial inflammation can lead to severe joint damage and even disability， thereby affecting quality of life for patients. Current clinical treatment of RA emphasises an integrated approach combining traditional Chinese and Western medicine， with traditional Chinese medicine offering certain advantages in reducing disease activity of RA， preventing relapses， and other aspects. Modern clinical evidence confirms that Guizhi Shaoyao Zhimutang （GSZT） is effective in improving symptoms such as immune metabolism， joint stiffness， and joint pain in RA patients. Pharmacological studies have revealed that GSZT primarily contains components such as cinnamaldehyde， total glucosides of paeony， total alkaloids of Aconiti Lateralis Radix Praeparata， glycyrrhetinic acid， zingiberone， isoimperatorin， ephedra polysaccharides， and cedrol. It improves RA symptoms via multiple mechanisms and targets， including enhancing immune responses， exerting anti-inflammatory and analgesic effects， regulating relevant signalling pathways， inhibiting cell apoptosis， and suppressing bone destruction. This paper reviewed the syndrome patterns and pharmacological basis of GSZT in the treatment of RA， as well as its clinical applications and related mechanisms， thereby providing a theoretical basis and reference for the further development and utilisation of GSZT in the treatment of RA.

Rheumatoid arthritis （RA） is a common autoimmune disease characterised clinically by symmetrical joint pain， swelling， and stiffness. Long-term chronic synovial inflammation can lead to severe joint damage and even disability， thereby affecting quality of life for patients. Current clinical treatment of RA emphasises an integrated approach combining traditional Chinese and Western medicine， with traditional Chinese medicine offering certain advantages in reducing disease activity of RA， preventing relapses， and other aspects. Modern clinical evidence confirms that Guizhi Shaoyao Zhimutang （GSZT） is effective in improving symptoms such as immune metabolism， joint stiffness， and joint pain in RA patients. Pharmacological studies have revealed that GSZT primarily contains components such as cinnamaldehyde， total glucosides of paeony， total alkaloids of Aconiti Lateralis Radix Praeparata， glycyrrhetinic acid， zingiberone， isoimperatorin， ephedra polysaccharides， and cedrol. It improves RA symptoms via multiple mechanisms and targets， including enhancing immune responses， exerting anti-inflammatory and analgesic effects， regulating relevant signalling pathways， inhibiting cell apoptosis， and suppressing bone destruction. This paper reviewed the syndrome patterns and pharmacological basis of GSZT in the treatment of RA， as well as its clinical applications and related mechanisms， thereby providing a theoretical basis and reference for the further development and utilisation of GSZT in the treatment of RA.

The aim of this study was to identify the Salmonella strains isolated from an outbreak of foodborne illness in a seafood buffet restaurant and analyze their pathogenic characteristics.Epidemiological data,fecal samples from patients and chefs,and food/environmental samples from the restaurant were analyzed.Research methods included bacterial culture,serotyping,quadruple fluo-rescence PCR identification,whole-genome sequencing and antibiotic susceptibility testing.The results showed that 4 S.Java strains(serotype 1,4,12∶b∶1,2;ST42)were isolated from two outbreak cases and two sporadic cases.All isolates exhibited similar genomic features,harboring 9 virulence islands and 98 virulence genes.Antimicrobial resistance profiling revealed streptomycin monoresis-tance,mediated by aac(6′)-Iy and aac(6′)-Iaa genes.In conclusion,this event was the first reported outbreak of foodborne illness caused by S.Java in China,indicating that S.Java may be prevalent in the surveyed district.The catering industry should optimize food handling and processing procedures and enhance the surveillance of high risk pathogens.Meanwhile,further studies should ad-dress differential diagnosis and pathogenic mechanism differences between S.Java and S.paratyphi B,which will facilitate evidence-based monitoring in China.

This study aims to screen epitope antigens targeting the receptor binding domain(RBD)of porcine epidemic diarrhea virus(PEDV)based on its amino acid sequence(GenBank accession number:AKN45969.1),prepare PEDV RBD polyclonal antibody,and perform their identification.Bioinformatics analysis software was used to predict the potential antigenic epitopes of PEDV RBD and sequence comparison with porcine coronavirus strains was performed,the selected dominant antigen epitopes were then conjugated with keyhole limpet hemocyanin(KLH),to synthesize pep-tides directly and immunize mice to generate specific antibody,Western blot technique and indirect immunofluorescence assay were utilized to identify the specificity of the antibodies,and indirect ELISA method was further applied to determine the antibody potency.Results showed the selected PEDV RBD dominant epitope sequence shared 100％similarity with 18 other PEDV strains,while exhibiting low sequence similarity with 11 TGEV strains(27.8％—29.3％)and 16 PDCoV strains(10.5％—13.4％),indicating good epitope conservation.Western blot showed that the specificity of the prepared peptide antibody specifically recognized the PEDV RED protein overexpressed in Ex-pi293F cells and overexpressed in baculovirus system,and at the same time,the antibody was still able to detect the PEDV S protein expressed in PEDV-infected Vero cells at a 1∶2 000 dilution,while it did not react with TGEV-and PDCoV-infected ST cells,indicating that the good specificity of the peptide antibody.ELISA revealed that the potency of specific antibodies in mouse serum could reach up to 1∶25 600.The above results indicate that bioinformatics techniques were suc-cessfully utilized to predict antigenic epitopes of PEDV RBD protein,and specific PEDV RBD pep-tide antibodies were prepared.

Objective:To investigate whether hysteroscopic transcervical resection of septum (TCRS) prior to in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) can improve cumulative live birth rates in patients with uterine septum. Methods:A retrospective cohort study was conducted to analyze data from 244 patients with partial uterine septum who underwent IVF/ICSI at the Reproductive Medicine Center of the Third Affiliated Hospital of Zhengzhou University between January 2016 and August 2022. The patients were divided into a surgical group ( n=171) and a non-surgical group ( n=73) based on whether TCRS was performed prior to IVF/ICSI. The clinical outcomes of IVF/ICSI in the two groups were analyzed, with the primary observation indicator being the cumulative live birth rate. Cox regression analysis was employed to identify determinants. Results:The age of patients in the operated group [(31.20±3.80) years] was younger than that in the non-operated group [(32.92±5.34) years, P=0.005], and the basal antral follicle count [17.0 (11.0, 24.0)] was higher than that in the non-operated group [14.0 (8.0, 21.5), P=0.039]. There were no significant differences in other baseline data (all P>0.05). The cumulative pregnancy rate [79.53% (136/171)] and the cumulative live birth rate [60.23% (103/171)] in the operated group during the 24-month follow-up period were significantly higher than those in the non-operated group [65.75% (48/73), P=0.022; 45.21% (33/73), P=0.030]. Compared with the operated group [296.0 (260.0, 430.0) d], the duration from the start of ovarian stimulation to the first live birth was significantly prolonged in the non-operated group [379.0 (329.5, 471.5) d, P<0.001]. Adjusted Cox-regression analysis showed that whether or not surgery was performed ( HR=1.683, 95% CI: 1.116-2.539, P=0.013) and the basal antral follicle count ( HR=1.032, 95% CI: 1.000-1.065, P=0.048) were independent factors affecting cumulative live birth rate. Conclusion:Performing TCRS before IVF/ICSI can improve cumulative live birth rates of patients with uterine septum.

Aim To investigate the intervention effect of Rehmannia radix water extract on bleomycin(BLM)-induced pulmonary fibrosis in mice combined with metabolomics and to reveal the potential mechanism,in order to provide new ideas for clinical treatment of pul-monary fibrosis.Methods Male C57BL/6N mice were randomly divided into the control group,model group,pirfenidone group(positive control,PFD,270 mg·kg-1),and low dose(DH-L,4.55 g·kg-1)group,medium dose(DH-M,9.1 g·kg-1)group and high dose(DH-H,18.2 g·kg-1)group of Rehman-nia.Except for the control group,BLM(5 mg·kg-1)was instilled into the trachea to establish the model of pulmonary fibrosis in the other groups.The survival rate,lung index and blood oxygen saturation of mice in each group were evaluated.HE and Masson staining were used to observe the pathological changes of lung tissue.WBP was used to detect lung function.Flow cytometry was used to detect the apoptosis of primary lung cells,ROS and immune cells.ELISA was used to detect the levels of fibrosis markers and inflammatory factors(α-SMA,collagen Ⅰ,collagen Ⅲ,TGF-β1,TNF-α,IL-1 β,and IL-6).Biochemical method was employed to detect the contents of GSH-Px,T-SOD and MDA.Liquid chromatograph mass spectrometer(LC-MS)metabolomics was used to analyze the changes of serum metabolic profile.Results Water extract of Re-hmannia significantly increased the survival rate,oxy-gen saturation and lung function of mice with pulmona-ry fibrosis,reduced the lung coefficient,ameliorated pathological damage and collagen deposition in lung tissue,reduced the levels of apoptosis and oxidative stress,and down-regulated the levels of inflammatory factors in lung tissue.It regulated the levels of metabo-lites such as bile acid metabolism,sphingolipid metabo-lism,and unsaturated fatty acid metabolism.Conclu-sions Water extract of Rehmannia inhibits lung injury and collagen deposition in mice with pulmonary fibrosis by inhibiting inflammatory response,which may be a-chieved by regulating the levels of inflammatory factors through the metabolic pathways of bile acid and sphin-golipid.

Objective To evaluate the value of high-resolution computed tomography(HRCT)signs combined with artificial intelligence(AI)quantitative indexes in differentiating mycoplasma pneumoniae pneumonia(MPP)from bacterial pneumonia(BP)in adults.Methods A total of 100 patients with adult MPP and 100 with adult BP were selected.Univariate and multivariate logistic regression analyses were used to identify independent factors that contribute to the differentiation of these two types of pneumonia.The receiver operating characteristic(ROC)curve and area under the curve(AUC)were employed to evaluate the discrimination ability of the two types of pneumonia.Results A comparison of gender and age between the two groups revealed statistically significant differences(P＜0.05).A comparison of bronchial wall thickening,bud sign,and solid shadows between the two groups yielded statistically significant differences(P＜0.05),while small nodules did not(P＞0.05).AI-based quantification revealed significant differences in distribution of inflammatory foci,consolidation/total lesion ratio,ground-glass opacity(GGO)/total lesion ratio,consolidation density,and GGO density(P＜0.05).Univariate and multivariate logistic regression analyses revealed that left upper lobe(％),left lower lobe(％),right upper lobe(％),right middle lobe(％),and right lower lobe(％)were independent factors that contributed to the identification of the two types of pneumonia.The AUC for HRCT signs alone,AI quantitative indexes alone,and HRCT signs combined with AI quantitative indexes in differentiating the two types of pneumonia were 0.715[95％confidence interval(CI)0.643-0.787],0.822(95％CI 0.764-0.881),and 0.853(95％CI 0.801-0.905),respectively.The utilization of HRCT signs combined with AI quantitative indexes had been demonstrated to possess a substantial capacity to accurately identify two types of pneumonia.Conclusion HRCT signs combined with AI quantitative indexes can improve the accuracy of differentiating MPP from BP in adults.

The aim of this study was to identify the Salmonella strains isolated from an outbreak of foodborne illness in a seafood buffet restaurant and analyze their pathogenic characteristics.Epidemiological data,fecal samples from patients and chefs,and food/environmental samples from the restaurant were analyzed.Research methods included bacterial culture,serotyping,quadruple fluo-rescence PCR identification,whole-genome sequencing and antibiotic susceptibility testing.The results showed that 4 S.Java strains(serotype 1,4,12∶b∶1,2;ST42)were isolated from two outbreak cases and two sporadic cases.All isolates exhibited similar genomic features,harboring 9 virulence islands and 98 virulence genes.Antimicrobial resistance profiling revealed streptomycin monoresis-tance,mediated by aac(6′)-Iy and aac(6′)-Iaa genes.In conclusion,this event was the first reported outbreak of foodborne illness caused by S.Java in China,indicating that S.Java may be prevalent in the surveyed district.The catering industry should optimize food handling and processing procedures and enhance the surveillance of high risk pathogens.Meanwhile,further studies should ad-dress differential diagnosis and pathogenic mechanism differences between S.Java and S.paratyphi B,which will facilitate evidence-based monitoring in China.

Objective A new occipital bone removal technology was applied to improve the success rate of brain removal.Methods The skull was sawed based on the traditional brain removal technology,and part of the occipital bone was removed downward centered in external occipital protuberance to the foramen magnum,then exposed the telencephalon,cerebellum and posterior medulla oblongata.After that,removed the tentorium cerebelli and cut down the medulla oblongata and the related cranial nerves at the skull base,then removed the brain tissues.Results The removed brain tissues had structurally intact telencephalon,cerebellum and brain stem,clear vessels in the cerebral sulci,and relatively intact optic chiasm,olfactory tracts and vertebro-basilar arteries.Conclusion Brain removal through a fenestration on the external occipital protuberance can effectively preserve the integrity of brain specimens,and improve the success rate of brain removal,which is of great significance for central nervous system teaching and improvement of human brain tissue repositories.

Objective To observe the effect of RAW264.7 cells on calcium sparks in a insulin resistance model of C2C12 cells induced by sodium palmitate.Methods C2C12 cells and RAW264.7 cells were co-cultured to simulate the in vivo state of skeletal muscle.C2C12 cells were cultured in high-glucose medium containing 2%horse serum to induce differentiation into mature myotubes,and then divided into 5 groups:control(RAW264.7 cells),co-culture of C2C12 with RAW264.7,C2C12 alone,co-culture of C2C12 with RAW264.7 plus sodium palmitate(PA),and C2C12 alone with PA.PA of 5 mmol/L was used to induce insulin resistance in C2C12 cells for 24 hours.Revived and expanded RAW264.7 cells were evenly added to C2C12 cells and co-cultured for two days.Subsequently,cells were maintained in modified suspension culture,and both cell types were loaded with the calcium ion fluorescent probe Fluo-4 AM.Finally,Paraxanthine was used to induce intracellular calcium sparks,which was captured and recorded under a laser confocal microscope.Results No significant calcium signal change was observed in the control group.Co-cultured C2C12 cells exhibited rapid and pronounced calcium signal changes,whereas calcium signals in C2C12 cells cultured alone increased slowly throughout the observation period without a sharp decline.The peak calcium signal was reached significantly faster in co-cultured C2C12 cells than that in C2C12 cells cultured alone(P<0.001).With PA induction,calcium signal changes in C2C12 cells were not markedly altered,while distinct calcium fluctuations were still observed in co-cultured C2C12 cells,and the peak calcium signal was reached significantly faster in co-cultured C2C12 cells than that in C2C12 cells cultured alone(P<0.001).Conclusion RAW264.7 cells enhance the dynamic responsiveness of calcium signaling in both normal and PA-stimulated C2C12 cells.