This study was aimed at understanding the genomic characteristics of the Vibrio cholerae O1 group isolated from humans in Fujian Province,to provide essential data for the molecular epidemiological study of cholera.From 2008 to 2022,16 strains of the V.cholerae O1 group from patients and carriers were collected,and antibiotic sensitivity was determined accord-ing to the minimum inhibitory concentration(MIC).The whole genome sequences obtained through second generation sequen-cing were analyzed in open source software,including snippy,Roary,and Prokka,as well as online analysis websites,inclu-ding NCBI and BacWGSTdb,for core-genome multilocus sequence typing(cgMLST),core-genome single nucleotide polymor-phism analysis(cgSNP),virulence gene analysis,drug resistance gene prediction,and pan-genomic diversity analysis.The whole genome sequences of V.cholerae were divided into five sequence types(STs),among which the newly discovered ST182 and ST1480 were the evolutionary branches of the current dominant clonal group ST75 in China,and were highly related to two strains isolated from Taiwan in 2010 and 2013,respectively.Both toxigenic strains and non-toxigenic strains carried a variety of virulence factors and showed gene variation to varying degrees.Thirteen drug resistance genes in seven categories were predicted,among which the distribution of colistin and tetracycline resistance genes was consistent with the drug resistance phenotype.Pan-ge-nomic analysis indicated that V.cholerae had an open pan-genome,and Roary cluster analysis showed higher resolution than cgMLST.In summary,V.cholerae O1 group isolates from humans in Fujian Province have polymorphisms in genome structure and function,and the newly discovered ST1480 clone group has epidemic potential.Therefore,the monitoring of such strains must be strengthened.

Objective:To investigate the role of matrix metalloproteinase-13 (MMP-13) in the development,diagnosis and prognosis of multiple myeloma (MM). Methods:Blood samples of 57 MM patients and 45 normal controls were collected,and real-time PCR was performed to detect the MMP-13 mRNA expression level in the study subjects,and the difference of MMP-13 mRNA level between MM patients and normal controls was compared. The correlations of MMP-13 with MM bone disease and its severity,ISS stage,DS stage,and treatment efficacy were analyzed. Results:The MMP-13 mRNA in patients with MM was significantly higher than that in normal controls (P<0.05). The MMP-13 mRNA in MM patients with bone disease was significantly higher than that in patients without bone disease,and the more severe the bone disease,the more obvious the increase in MMP-13 mRNA (P<0.05). The MMP-13 gene expression level was also significantly different between ISS and DS stage Ⅰ and stage Ⅲ patients (P<0.05),and the MMP-13 mRNA level was significantly decreased after treatment (P<0.05). Conclusion:The MMP-13 mRNA expression level is related to the occurrence and development of MM,and it has certain guiding significance in disease diagnosis and prognosis evaluation.

Objective To investigate the clinical characteristics and prognosis of pneumococcal meningitis(PM),and drug sensitivity of Streptococcus pneumoniae(SP)isolates in Chinese children.Methods A retrospective analysis was conducted on clinical information,laboratory data,and microbiological data of 160 hospitalized children under 15 years old with PM from January 2019 to December 2020 in 33 tertiary hospitals across the country.Results Among the 160 children with PM,there were 103 males and 57 females.The age ranged from 15 days to 15 years,with 109 cases(68.1% )aged 3 months to under 3 years.SP strains were isolated from 95 cases(59.4% )in cerebrospinal fluid cultures and from 57 cases(35.6% )in blood cultures.The positive rates of SP detection by cerebrospinal fluid metagenomic next-generation sequencing and cerebrospinal fluid SP antigen testing were 40% (35/87)and 27% (21/78),respectively.Fifty-five cases(34.4% )had one or more risk factors for purulent meningitis,113 cases(70.6% )had one or more extra-cranial infectious foci,and 18 cases(11.3% )had underlying diseases.The most common clinical symptoms were fever(147 cases,91.9% ),followed by lethargy(98 cases,61.3% )and vomiting(61 cases,38.1% ).Sixty-nine cases(43.1% )experienced intracranial complications during hospitalization,with subdural effusion and/or empyema being the most common complication[43 cases(26.9% )],followed by hydrocephalus in 24 cases(15.0% ),brain abscess in 23 cases(14.4% ),and cerebral hemorrhage in 8 cases(5.0% ).Subdural effusion and/or empyema and hydrocephalus mainly occurred in children under 1 year old,with rates of 91% (39/43)and 83% (20/24),respectively.SP strains exhibited complete sensitivity to vancomycin(100% ,75/75),linezolid(100% ,56/56),and meropenem(100% ,6/6).High sensitivity rates were also observed for levofloxacin(81% ,22/27),moxifloxacin(82% ,14/17),rifampicin(96% ,25/26),and chloramphenicol(91% ,21/23).However,low sensitivity rates were found for penicillin(16% ,11/68)and clindamycin(6% ,1/17),and SP strains were completely resistant to erythromycin(100% ,31/31).The rates of discharge with cure and improvement were 22.5% (36/160)and 66.2% (106/160),respectively,while 18 cases(11.3% )had adverse outcomes.Conclusions Pediatric PM is more common in children aged 3 months to under 3 years.Intracranial complications are more frequently observed in children under 1 year old.Fever is the most common clinical manifestation of PM,and subdural effusion/emphysema and hydrocephalus are the most frequent complications.Non-culture detection methods for cerebrospinal fluid can improve pathogen detection rates.Adverse outcomes can be noted in more than 10% of PM cases.SP strains are high sensitivity to vancomycin,linezolid,meropenem,levofloxacin,moxifloxacin,rifampicin,and chloramphenicol.[Chinese Journal of Contemporary Pediatrics,2024,26(2):131-138]

Objective To investigate the incidence and risk factors for acute kidney injury(AKI)in children with primary nephrotic syndrome(PNS),as well as the role of neutrophil gelatinase-associated lipocalin(NGAL)and kidney injury molecule-1(KIM-1)in the early identification of AKI in these children.Methods A prospective collection of clinical data from children hospitalized with PNS at the Children's Hospital of the Capital Institute of Pediatrics from January 2021 to October 2022 was conducted.The children were divided into two groups based on the presence of AKI:the AKI group(47 cases)and the non-AKI group(169 cases).The risk factors for AKI in children with PNS were identified by multivariate logistic regression analysis.Urinary KIM-1 and NGAL levels were compared between the AKI and non-AKI groups,as well as among the different stages of AKI.Results The incidence of AKI in children with PNS was 21.8%.Multivariate logistic regression analysis revealed that steroid-resistant nephrotic syndrome,gastrointestinal infections,and heavy proteinuria were independent risk factors for AKI in these children with PNS(P<0.05).Urinary KIM-1 and NGAL levels were higher in the AKI group compared to the non-AKI group(P<0.05),and the urinary NGAL and KIM-1 levels in the AKI stage 2 and stage 3 subgroups were higher than those in the AKI stage 1 subgroup(P<0.017).Conclusions KIM-1 and NGAL can serve as biomarkers for the early diagnosis of AKI in children with PNS.Identifying high-risk populations for AKI in children with PNS and strengthening the monitoring of related risk factors is of significant importance.

Aim To discover the potential active compounds and possible mechanisms in rheumatoid arthritis (RA) treatment with Zhi-Huang-Zhi-Tong powder (ZHZTP) by using network pharmacology and in vitro study. Methods The active ingredient targets and disease targets of Zhihuang Zhitong Powder were searched and screened by database; they intersected to get a common target; and the "drug-component-target" relationship network diagram was constructed for GO and KEGG enrichment analysis of the overlapping genes; then the core components were docked with the core targets. Finally, based on the inflammation model of HUVECs in vitro, the efficacy and mechanism of Zhihuang Zhitong powder were verified by MTT method, plate scratch test and Western blot. Results Active compounds involved in RA treatment were screened in the present study, and the top two were ursolic acid and emodin, all playing crucial roles in RA treatment with ZHZTP. Additionally, the key target was AKTA, TNF and IL-6. GO and KEGG enrichment analysis revealed that ZHZTP regulated BP, MF and CC, and also focused on regulating AKTA, TNF and IL-6 signaling pathway. Molecular docking showed that interactions between key active compounds and key targets were stable. In vitro ZHZTP significantly inhibited cell viability and migration of TNF-a-stimulated HUVECs, and the involved mechanism may be associated with PI3K/AKT/m-TOR signaling. Conclusions The present study reveals that the potential active compounds of ZHZTP are ursolic acid and emodin, and moreover, the involved mechanisms of ZHZTP for RA treatment are associated with PI3 K/AKT/m-TOR signaling.

Objective To observe the clinical efficacy and safety of metronidazole on patients with peri-implantitis.Methods Patients with peri-implantitis who received complete supragingival scaling and subgingival scaling were divided into control group(hydrogen peroxide and 0.9％NaCl alternately washing around the implant)and treatment group(metronidazole orally 0.2 g every time for 3 times a day on the basis of control group)according to the treatment regimens.The efficacy,periodontal indexes,peri-implant crevicular fluid(PICF)type Ⅱ collagenase(COL-Ⅱ),interleukin(IL)-17 and intercellular adhesion molecule-1(ICAM-1)levels were compared between groups,and the safety evaluation was performed.Results 32 cases in control group and 42 cases in treatment group.After treatment,the total effective rates in treatment group and control group were 95.24％(40 cases/42 cases)and 90.26％(29 cases/32 cases)(P＜0.05).After treatment,the periodontal probing depths in treatment group and control group were(3.18±0.55)and(4.49±0.62)mm,gingival sulcus bleeding indexes were(1.21±0.21)and(2.48±0.27)points,attachment levels(0.87±0.22)and(2.09±0.60)mm,plaque indexes were(0.91±0.17)and(1.16±0.14)points(all P＜0.05).After treatment,the levels of COL-Ⅱ in PICF in treatment group and control group were(112.51±33.27)and(154.85±25.35)μg·L-1,IL-17 levels were(14.51±2.62)and(17.64±3.07)ng·L-1,ICAM-1 levels were(92.21±8.37)and(106.58±11.22)μg·L-1,respectively(all P＜0.05).The incidence rates of adverse reactions in treatment group and control group were 23.81％(10 cases/42 cases)and 12.50％(4 cases/32 cases),respectively(P＞0.05).Conclusion Metronidazole has significant efficacy on patients with peri-implantitis,and can enhance the antibacterial effect,relieve the degree of inflammation around the implant,and improve the periodontal indexes,and it has high safety.

ObjectiveTo clarify the pharmacodynamic characteristics and neuroinflammatory mechanisms of Ruyi Zhenbaowan （RYZBW） in treating nociceptive hypersensitivity and central sensitisation of spinal cord in the mouse model of central post-stroke pain （CPSP）. MethodSPF-grade male ICR mice of 8 weeks old were assigned into the sham operation （Sham）， model （CPSP）， low-， medium-， and high-dose （0.303， 0.607 1.214 g·kg^-1） RYZBW （RYZBW-L， RYZBW-M， and RYZBW-H， respectively）， and pregabalin （PGB， 0.046 g·kg^-1， positive control） groups. The rat model of CPSP was established by injection of type Ⅳ collagenase into the ventral posterior lateral nucleus of the thalamus on day 1. Rats were administrated with corresponding drugs or normal saline （Sham and CPSP groups） by gavage from day 14 to day 17. The mechanical pain sensitivity test was performed on days 0， 3， 4， 7， 10， 14， 17. On day 18， the L₅ segment of spinal cord was collected for the detection of inflammatory cytokines by immunoinflammatory microarray， CXC chemokine ligand 16 （CXCL16） by enzyme-linked immunosorbent assay， and calcitonin gene-related peptide （cGRP） by immunohistochemistry. In addition， fluorescence dual-labeling was employed to determine the expression levels of CXCL16， the dendritic cell marker CD11c， the macrophage marker CD68， the microglia marker TMEM119， the endothelial cell markers CD31 and CXCR6， and the T cell marker CD3. ResultCompared with the Sham group， the mechanical pain threshold of the CPSP group was significantly lower than that of the Sham group from day 3 to day 17， with stable hyperalgesia symptoms. On the 7^th day， the mechanical pain threshold of the PGB group was significantly higher than that of the CPSP group， with significant analgesic effect （P<0.01）. On days 10-17, the mechanical pain threshold of the RYZBW-H group was significantly higher than that of the CPSP group， showing a stable analgesic effect （P<0.05）. On the 17^th day， the analgesic effect of RYZBW was dose-effect correlated （R²=0.303 7）. From day 4 to day 17， the mechanical pain threshold of RYZBW-H group was positively correlated with time （R²=0.111 5）. The above results suggested that the analgesia of RYZBW was time-dependent. On the 17 th day， the expression of central sensitization marker cGRP in the spinal dorsal horn of CPSP mice was significantly increased compared with the Sham group （P<0.05）， and RYZBW down-regulated it in a dose-dependent manner （R²=0.500 8）， suggesting that RYZBW significantly inhibited the central sensitization of the spinal cord caused by CPSP. The results of spinal cord inflammation chip on the 17^th day showed that compared with CPSP group， RYZBW-H group inhibited CXCL16 expression （P<0.01）.The results of ELISA based on independent repeated samples showed that RYZBW inhibited the expression of CXCL16 protein in spinal cord in a dose-dependent manner （R²=0.250 4）. The results of immunofluorescence double labeling showed that compared with Sham group, the expression of CXCL16 in CD11c positive dendritic cells in CPSP group increased， and the number of CD68 positive cells increased （P<0.05）. Compared with CPSP group， RYZBW down-regulated it: the expression of CXCL16 in CD31 positive endothelial cells， CD68 positive macrophages and TMEM119 positive microglia increased， and the number and cell body area of TMEM119 positive microglia increased significantly （P<0.05）. The number of CD3 positive T cells （P<0.05） and the expression of CXCR6 in CD3 positive T cells were increased. RYZBW inhibited the activation of endothelial cells and macrophages in a dose-dependent manner， and reduced the infiltration of microglia and T cells （R²=0.691 4， R²=0.551 5， R²=0.653 2， R²=0.180 6， R²=0.287 5， R²=0.298 6，R²=0.511 6）. ConclusionRYZBW can effectively alleviate nociceptive hypersensitivity and central sensitisation of the spinal cord in CPSP mice by regulating CXCL16-CXCR-6， inhibiting the infiltration and activation of microglia and macrophages， and the activation of dendritic cells， endothelial cells， and T cells.

Severe cerebrovascular disease is a kind of severe cerebrovascular disease involving disturbance of consciousness,which corresponds to the viscera of stroke in traditional Chinese medicine(TCM).Rooted in the TCM classics such as Huang Di Nei Jing(The Yellow Emperor's Inner Classic)and Shang Han Lun(Treatise on Cold Damage),Professor WU Hai-Ke studied the TCM pathogenesis theory recorded in the chapter of Profound and Important Theory in Plain Questions(Su Wen)carefully.Based on its clinical practice and inherited the traditional four diagnostic methods of inspection,auscultation-olfaction,interrogation,and palpation,Professor WU Hai-Ke simplified and created the six-differentiation method for the syndrome differentiation of patients with severe cerebrovascular disease:distinguishing the mind to learn the progression of the disease,distinguishing the complexion to know the exuberance or decline of qi and blood,distinguishing the tongue picture to predict the aggravation or relief of the disease,distinguishing the pulse condition to judge the prognosis,distinguishing the breath to know the deficiency or excess of zang-fu organs,and distinguishing cold-heat to identify the exterior,interior,yin and yang.The six-differentiation method highlights the significance of mind,complexion,tongue picture,pulse condition,breath,and cold-heat in the syndrome differentiation of patients with severe cerebrovascular disease.The clinical information of six-differentiation method is easy to obtain,and the method presents the characteristics and advantages of TCM diagnostic methods in the syndrome differentiation of patients with severe cerebrovascular disease,which will provide reference for the establishment of clinical diagnosis and treatment norms of TCM for severe cerebrovascular disease.

Taking berberine (BBR) as an example, to study whether the supramolecular hydrogel formed by berberine and lotus root starch (Nelumbo nucifera Gaertn; LRS), a natural polysaccharide, affects the inhibition to Staphylococcus aureus and the ability of biofilm clearance. The chemical structure and rheological properties of BBR@LRS gel were characterized by infrared spectroscopy and rheometer. The in vitro release of supramolecular hydrogel was observed at pH = 1.2 and pH = 7.4. Broth dilution method and biofilm clearence experiment were used to observe the bacteriostasis and biofilm clearance respectively. Cytotoxicity test and in vitro hemolysis test were used to evaluate the biosafety preliminarily. The results showed that the LRS polysaccharide hydrogel could encapsulate BBR, and there was an interaction between them. The BBR@LRS gel had good rheological properties and biosafety, and played a role in solubility enhancement and slow release of BBR, which was stronger than BBR in inhibiting the growth of Staphylococcus aureus and clearing biofilm. This study provides reference for the effect of natural polysaccharide supramolecular hydrogels on biological functions of active components of traditional Chinese medicine.

Aim To apply network pharmacology, molecular docking, and in vitro experimental techniques to predict as well as verify the antidepressant pharmacological mechanisms of Mengyao Anshen Buxin Liuwei pills. Methods TCMSP database and literature mining were used to obtain the active ingredients of Anshen Buxin six flavor pills , Swiss Target Prediction was applied to predict the ingredient related target information, and Cytoscape was employed to construct a medicinal herb ingredient target network. Depression targets were retrieved through GeneCards , Drugbank , OMIM and other databases. STRING database was used to obtain protein interaction relationship network information. DAVID database was used for GO biological process enrichment analysis and KEGG signaling pathway enrichment analysis. Autodock vina software was applied for molecular docking validation. In vitro injury model was established in BV2 microglial cells, cell viability was assessed by CCK-8 assay, and the mRNA expression of relevant core targets was assessed by qPCR. Results A total of 34 active components of Anshen Buxin Liuwei pills were screened, involving 140 potential targets and 59 core targets, involving 99 signaling pathways. Molecular docking results showed that betulinic acid, stigmasterol p-stiosterol 10 active components such as sitosterol and quercetin had good binding ability with AKT1, APP, ALB, MAPK3, VE GFA and MAPK 1 targets. The re suits in vitro showed that the activity of BV2 cells increased significantly compared with the model group. Anshen Buxin Liuwei pills could regulate the mRNA expression of each core target. Conclusion Anshen Buxin Liuwei pills may play an antidepressant role mainly through serotonin synaptic and other signaling pathways and related core targets.