The conversion of carbon dioxide into high value-added energy has become a research hotspot.In this study,by using Ti3AlC2 and CuCl2·2H2O as precursors,accordion-like two-dimensional Cu0/Cu2+-Ti3C2Tx catalysts modified with Cu0 nanoparticles and Cu2+ self-intercalation were successfully prepared for electrocatalytic reduction of CO2.The performance of the material was tested,and the results showed that in a CO2-saturated 0.5 mol/L KHCO3 electrolyte solution,compared with the original Ti3AlC2,the initial potential of the electrocatalytic conversion of CO2 to C2H4 over Cu0/Cu2+-Ti3C2Tx catalyst decreased from ?0.65 V(vs RHE)to?0.01 V(vs RHE).The maximum current density increased from 0.19 mA/cm2 to 2.5 mA/cm2,the double layer capacitance(Cdl)value increased from 2.61 mF/cm2 to 55.06 mF/cm2.The material showed higher catalytic activity and faster electron transfer rate(Charge transfer resistance(Rct)value was only 16.9 Ω).Moreover,the material showed high electrochemical active area and excellent stability.This research provided a promising method for designing and preparing elcetrocatalytic reduction(ECR)catalysts in the future.

Objective To investigate the effects of honokiol on proliferation and apoptosis of human adipose-derived mesenchymal stem cells(hADSCs),and to investigate the effect of the drug on the tumor microenvironment.Methods hADSCs were incubated with different concentrations of honokiol,the proliferation of hADSCs was detec-ted by MTS and Trypan blue staining,and cell apoptosis was assessed by annexin V/PI double staining.In the meantime,expression of mRNA and protein related to cell proliferation and apoptosis were detected by qPCR and Western blot,respectively.The expression of total MEK,phosphorylated MEK,total ERK and phosphorylated ERK proteins in the MEK-ERK1/2 signaling pathway were detected by Western blot.Results The effect of honokiol on inhibiting proliferation and promoting apoptosis of hADSCs was significantly enhanced with the increase of concen-tration.The expressions of proliferation-related genes CCND1,MKI67 and PCNA were down-regulated.The expres-sions of pro-apoptotic genes BAX and TP53 was up-regulated,and the expressions of anti-apoptotic gene BCL2 was down-regulated.Honokiol inhibited MEK and ERK1/2 phosphorylation in a concentration-dependent manner.Conclusions Honokiol inhibits proliferation and promotes apoptosis of hADSCs,and the specific mechanism is po-tentially related to the inhibition of MEK-ERK1/2 pathway.

Objective To investigate the effect and mechanism of microRNA-10b(miR-10b)on idiopathic short stature(ISS).Methods A total of 54 children with ISS and 54 healthy children were collected.The serum expression of miR-10b was detected by RT-qPCR,and the relationship between serum miR-10b expression and clinical data of children with ISS was analyzed.miR-10b inhibitor,si-TGFBR1 and their negative control transfection C28/I2 cells were used.CCK-8 experimental detection was used to detect C28/I2 cell proliferation.Western blot assay was used to detect gnome related transcription factor 2(RUNX2),collagen type X alpha 1 chain(COL10A1),transforming growth factor beta receptor 1(TGFBR1),SMAD3 and pSMAD3 protein expression.The target of miR-10b was screened in StarBase database,and the targeting relationship between miR-10b and TGFBR1 was verified by dual luciferase reporter gene assay.Results The serum expression of miR-10b was higher in the ISS group than that of the healthy control group,and the higher the miR-10b expression,the more obvious the decrease of child height,IGF-1 and alkaline phosphatase(P＜0.05).Compared with the NC group,the cell proliferation ability and RUNX2,COL10A1,TGFBR1,and pSMAD3 protein expression were up-regulated in the miR-10b inhibitor group(P＜0.05).StarBase database suggested that miR-10b had a binding site of TGFBR1,and dual luciferase reporter gene assay confirmed that TGFBR1 interacted with miR-10b(P＜0.05).Compared with the si-NC group,the expression of TGFBR1 was down-regulated and the cell proliferation ability was decreased in the si-TGFBR1 group(P＜0.05).Conclusion miR-10b inhibits chondrocyte proliferation and hypertrophy in idiopathic short stature by targeting TGFBR1/SMAD3 pathway.

Objective: To investigate the characteristics of newly reported HIV/AIDS cases aged 15 years and older in Shangcheng District, Hangzhou City from 2006 to 2022, so as to provide the basis for improving AIDS prevention and control strategies. Methods: Data of newly reported HIV/AIDS cases aged 15 years and older in Shangcheng District from 2006 to 2022 were collected through HIV/AIDS Comprehensive Control System of Chinese Disease Prevention and Control Information System. Population distribution and transmission routes were analyzed, and changing trends in case number were analyzed using average annual percent change (AAPC) and annual percent change (APC). Results: A total of 4 409 HIV/AIDS cases aged 15 years and older were newly reported in Shangcheng District from 2006 to 2022, including 3 932 males (89.18%). There were 3 447 cases (78.18%) under 50 years old and 962 cases (21.82%) being 50 years and older. Sexual contact was a predominant transmission route, with 4 326 cases accounting for 98.12%, including 2 626 cases (59.56%) with homosexual contact and 1 700 cases (38.56%) with heterosexual contact. The number of HIV/AIDS cases showed an overall upward trend from 2006 to 2022 (AAPC=13.038%, P<0.05), with an upward trend from 2006 to 2015 (APC=42.578%, P<0.05) and a downward trend from 2015 to 2022 (APC=-19.713%, P<0.05). The increase in the number of cases aged 50 years and older group was faster than that of cases aged under 50 years (AAPC=22.641% vs. 11.162%, both P<0.05). The increase in the number of cases with homosexual contact transmission was faster than that of cases with heterosexual contact transmission (AAPC=20.417% vs. 7.455%, both P<0.05). Conclusions The number of newly reported HIV/AIDS cases aged 15 years and older in Shangcheng District performed an overall upward trend from 2006 to 2022. The cases aged 50 years and older and transmitted through homosexual contact increased rapidly, which should be taken seriously.

Objective To investigate the role of endoplasmic reticulum stress and p38 mitogen-activated protein kinase P38MAPK signaling pathway in thyroid epithelial cell injury induced by high iodine.Methods The thyroid epithelial cells Nthy-ori 3-1 were randomly divided into control group(normal culture),model group(40 mmol·L-1 potassium iodide),4-phenylbutyric acid(4-PB A)group(40 mmol·L-1 potassium iodide and 2 mmol·L-1 4-PBA)and SB203580 group(40 mmol·L-1 potassium iodide and 10 μmol·L-1 SB203580).Western blot was used to detect the expression of glucose regulated protein 78(GRP78)and p-P38/P38 of Nthy-ori 3-1 cells.MTT and colony formation experiments were used to detect the proliferation level.Flow cytometry was used to detect the apoptosis level.Enzyme-linked immunosorbent assay(ELISA)was used to detect the level of interleukin-6(IL-6).Results The expression levels of GRP78 protein in control group,model group,4-PBA group and SB203580 group were 0.15±0.03,0.61±0.07,0.27±0.03 and 0.37±0.04;the ratios of p-P38/P38 were 0.12±0.03,0.53±0.04,0.35±0.04 and 0.25±0.03;cell survival rates were(100.00±0.00)％,(53.71±6.16)％,(80.24±8.17)％and(71.29±7.36)％;the number of clones formed was 271.36±25.18,96.09±10.79,183.24±15.36 and 141.24±16.18;the apoptosis rates were(1.04±0.21)％,(9.27±1.67)％,(3.18±1.52)％and(3.82±1.09)％;IL-6 secretion levels were(0.71±0.08),(9.17±0.87),(3.26±0.29)and(4.71±0.41)nmol·L-1,respectively.For the above indicators,there was significant difference between the model group and the control group(all P＜0.05);there was significant difference between the 4-PBA group,SB203580 group and the model group(all P＜0.05).Conclusion High iodine can inhibit the proliferation of Nthy-ori 3-1 cells and induce apoptosis and secretion of inflammatory factors,which may be related to the activation of endoplasmic reticulum stress and P38MAPK signaling pathway by high iodine.

Objective:To investigate the molecular mechanisms of chronic rhinosinusitis (CRS), to identify key cell subgroups and genes, to construct effective diagnostic models, and to screen for potential therapeutic drugs.Methods:Key cell subgroups in CRS were identified through single-cell transcriptomic sequencing data. Essential genes associated with CRS were selected and diagnostic models were constructed by hdWGCNA (high dimensional weighted gene co-expression network analysis) and various machine learning algorithms. Causal inference analysis was performed using Mendelian randomization and colocalization analysis. Potential therapeutic drugs were identified using molecular docking technology, and the results of bioinformatics analysis were validated by immunofluorescence staining. Graphpad Prism, R, Python, and Adobe Illustrator software were used for data and image processing.Results:An increased proportion of basal and suprabasal cells was observed in CRS, especially in eosinophilic CRS with nasal polyps (ECRSwNP), with P=0.001. hdWGCNA revealed that the "yellow module" was closely related to basal and suprabasal cells in CRS. Univariate logistic regression and LASSO algorithm selected 13 key genes ( CTSC, LAMB3, CYP2S1, TRPV4, ARHGAP21, PTHLH, CDH26, MRPS6, TENM4, FAM110C, NCKAP5, SAMD3, and PTCHD4). Based on these 13 genes, an effective CRS diagnostic model was developed using various machine learning algorithms (AUC=0.958). Mendelian randomization analysis indicated a causal relationship between CTSC and CRS (inverse variance weighted: OR=1.06, P=0.006), and colocalization analysis confirmed shared genetic variants between CTSC and CRS (PPH4/PPH3>2). Molecular docking results showed that acetaminophen binded well with CTSC (binding energy:-5.638 kcal/mol). Immunofluorescence staining experiments indicated an increase in CTSC +cells in CRS. Conclusion:This study integrates various bioinformatics methods to identify key cell types and genes in CRS, constructs an effective diagnostic model, underscores the critical role of the CTSC gene in CRS pathogenesis, and provides new targets for the treatment of CRS.

AIM To prepare the soluble microneedles of Aconitum brachypodum Diels alkaloids.METHODS Centrifugal molding method was adopted in the preparation of soluble microneedles.With chondroitin sulfate consumption,PVP K120 consumption and 40%ethanol consumption as influencing factors,piercing rate as an evaluation index,the formulation was optimized by Box-Behnken response surface method,after which the morphology,piercing performance,drug content and in vitro transdermal performance were investigated.RESULTS The optimal formulation was determined to be 123 mg for chondroitin sulfate consumption,298 mg for PVP K120 consumption,and 2.4 mL for 40%ethanol consumption,the piercing rate was 98.3%.The soluble microneedles were yellow and square patch with conoid needle,which could pierce aluminum foil and rat skin,along with the drug content of(0.94±0.025)mg.The soluble microneedle group demonstrated the accumulative permeability rate of 91.4%within 24 h,which was higher than that in the gel ointment group,and the permeability accorded with Higuchi equation.CONCLUSION The soluble microneedles of A.brachypodum alkaloids exhibit good mechanical strength,which can achieve effective transdermal delivery of drugs.

ObjectiveTo analyze the clinical characteristics and the use of traditional Chinese medicine （TCM） therapy in cancer patients with COVID-19， and to provide reference for making TCM prevention and treatment strategies and determining diagnosis and treatment priorities for patients with malignant tumors in the COVID-19 epidemic. MethodsThe medical records of 225 malignant tumor cases with COVID-19 who were admitted to 7 national research centers from January 1st to 20th， 2023 were retrospectively collected， and the main symptoms and duration after infection， nucleic acid negative conversion time， use of TCM therapy， and changes in adverse reactions after resuming anti-tumor treatment were analyzed. ResultsA total of 222 malignant tumor patients with COVID-19 were included in the analysis， involving 205 mild cases and 17 moderate cases. The top four most frequently reported clinical symptoms were fever （165 cases）， expectoration or dry cough （99 cases）， decreased appetite （95 cases） and fatigue （85 cases）， of which 40 expectoration or dry cough cases ， 37 fatigue cases and 29 decreased appetite cases lasted for more than 14 days. One hundred and five patients with nucleic acid detection report had a median negative conversion time of 14 days. The nucleic acid negative conversion time was significantly longer in patients with lung cancer compared to those with digestive system malignant tumors， and in those with myelosuppression than those without （P＜0.01）. During the infection period， 47.30% （105/222） of the patients used Chinese patent medicine， and 21.17% （47/222） were treated with herbal decoctions. The use of TCM in patients during the prevention and rehabilitation period， was 1.80%（4/222） and 7.21%（16/222）， respectively. Fifty-five patients resumed anti-tumor treatment after nucleic acid negative conversion， and received TCM simultaneously. Observed adverse reactions， including gastrointestinal reactions， bone marrow suppression， and neurotoxicity， were all grade 1 to 2， and no new adverse events occurred during follow-up. ConclusionCertain malignant tumor patients with COVID-19 had prolonged symptoms and nucleic acid negative conversion time Rational use of TCM can help to promote the rehabilitation of the patients and ensure the smooth process of anti-tumor treatment after infection.

Objective To investigate the clinical effect of apical microsurgery combined with guided bone regeneration(GBR)on refractory apical periodontitis and masticatory function.Methods A total of 82 patients with refractory apical periodontitis admitted to our hospital from June 2019 to September 2021 were selected as the study subjects,and they were divided into the control group and the com-bined group according to the random number table,with 41 cases in each group.The control group was treated with apical microsurgery,and the combined group was treated with apical microsurgery combined with GBR.The clinical efficacy,masticatory function and the levels of bone absorption markers[Wnt3a,osteoprotegerin(OPG),receptor activator of nuclear factor-κB ligand(RANKL)]of patients in the two groups were compared.Results The total effective rate of the combined group(100%)was higher than that of the control group(85.37%),the difference was statistically significant(P<0.05).The masticatory efficiency and bite force of patients in both groups increased gradually 3,6 and 12 months after operation(P<0.05),which were higher in the combined group compared with the control group(P<0.05).The tooth mobility of patients in both groups decreased gradually 3,6 and 12 months after operation,and the tooth mobility of patients 3 and 6 months after operation in the combined group were lower than those in the control group(P<0.05).The levels of Wnt3a and OPG of patients 1 week after operation in both groups increased,which were higher in the combined group compared with the control group(P<0.05).The RANKL level of gingival crevicular fluid of patients 1 week after operation in both groups decreased,and which was lower in the combined group compared with the control group(P<0.05).Conclusion The microapical surgery combined with GBR is effective for refractory apical periodontitis,which can effectively inhibit bone resorption,and improve masticatory function.

DNA genetic markers have always played important roles in individual identification, kinship analysis, ancestry inference and phenotype characterization in the field of forensic medicine. DNA methylation has unique advantages in biological age inference, body fluid identification and prediction of phenotypes. The majority of current studies independently examine DNA and DNA methylation markers using various workflows, and they use various analytical procedures to interpret the biological information these two markers present. Integrated methods detect DNA and DNA methylation markers simultaneously through a single experimental workflow using the same preparation of sample. Therefore, they can effectively reduce consumption of time and cost, streamline experimental procedures, and preserve valuable DNA samples taken from crime scenes. In this paper, the integrated detection approaches of DNA and DNA methylation markers on different detection platforms were reviewed. In order to convert methylation modifications to detectable forms, several options were available for pretreatment of genomic DNA, including digestion with methylation-sensitive restriction enzyme, affinity enrichment of methylated fragments, conversion of methylated or unmethylated cytosine. Multiplexed primers can be designed for DNA markers and converted DNA methylation markers for co-amplification. The schemes of using capillary electrophoresis platform for integrated detection add the pretreatment of genomic DNA on the basis of detecting DNA genetic markers. DNA and DNA methylation markers are then integrated by co-amplification. But the limited number of fluorescent options available and the length of amplicons restrict the type and quantity of markers that can be integrated into a panel. Pyrophosphate sequencing also supports integrated detection of DNA and DNA methylation markers. On this platform, due to the conversion of unmethylated cytosine to thymine after treatment with bisulfite, the methylation level of CpG site can be directly calculated using the peak height ratio of cytosine bases and thymine bases. Therefore, the methylation levels and SNP typing can be simultaneously obtained. However, due to the limited read length of sequencing, the detection of markers with longer amplicons is restricted. It is not conducive to fully interpret the complete information of the target sequence. Next-generation sequencing also supports integrated detection of DNA and DNA methylation markers. A preliminary experimental process including DNA extraction, pretreatment of genomic DNA, co-preparation of DNA and DNA methylation library and co-sequencing, has been formed based on the next-generation sequencing platform. It confirmed the feasibility of next-generation sequencing technology for integrated detection of DNA and DNA methylation markers. In field of biomedicine, various integrated detection schemes and corresponding data analysis approaches of DNA and DNA genetic markers developed based on the above detection process.Co-analysis can simultaneously obtain the genomic genetic and epigenetic information through a single analytic process. These schemes suggest that next-generation sequencing may be an effective method for achieving more accurate and highly integrated detection, helping to explore the potential for application in forensic biological samples. We finally explore the impact of interactions between sites and different pretreatment methods on the integrated detection of DNA and DNA methylation markers, and also propose the challenge of applying third-generation sequencing for integrated detection in forensic samples.