Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disease,with a global prevalence of approximately 30.05% to 32.4% .It is closely associated with various other diseases.In recent years,microRNAs(miRNAs)have played a crucial role as non-invasive biomarkers in understanding the pathogenesis and diagnosis of NAFLD.miRNAs play significant roles in both lipid metabolism and insulin resistance,exerting specific regulatory functions in the development and progression of NAFLD.miRNAs are small RNA molecules that regulate the gene expression and protein synthesis by controlling the transcription and translation of target genes.This article provides a comprehensive overview of the roles and mechanisms of miRNAs in lipid metabolism,insulin resistance,and the occurrence and development of NAFLD.

Objective To investigate the correlation between HLA-DM gene polymorphism and antibody response induced by poliomyelitis vaccine.Methods 355 healthy infants aged 2 to 3 months in Guangxi Zhuang Autonomous Region were selected as the study objects,and 10 SNPs of DMA exon 3 and DMB exon 2/3 were genotyped by Sanger sequencing.The correlation between DMA and DMB genes and poliomyelitis vaccine-induced antibody response was analyzed at allele,genotype and haplotype levels.Results In the type Ⅰ antibody response induced by polio vaccine,the frequencies of DMA*01:02,DMB*01:01,DMB*01:01/DMB*01:01 and DMA*01:02-DMB*01:01 were higher in the non-seroconversion group than in the seroconversion group(P<0.05).In the polio type Ⅱ antibody response,the frequencies of DMA*01:02,DMA*01:02/DMA*01:02,DMB*01:01/DMB*01:01 and DMA*01:02-DMB*01:01 were higher in the non-seroconversion group than in the seroconversion group(P<0.05).Conclusion Alleles DMA*01:02 and DMB*01:01 may be associated with type Ⅰ and type Ⅱ antibody responses induced by poliomyelitis vaccine.

Objective To investigate the effect of transmembrane protein CD147 expression on AIM2 inflammasome-mediated pyroptosis and proliferation of cervical cancer cells.Methods Western Blot was used to detect the expression of CD147 in cervical cancer cell lines SiHa(HPV+)and C33a(HPV-)and normal cervical epithelial cells H8(HPV+)and HCer Epic(HPV-).SiHa cells were transfected with lentivirus to down-regulate the expression of CD147.According to the different treatments,SiHa cells were divided into SiHa group,negative control group(shCD147-NON),knockdown group 1(shCD147-1)and knockdown group 2(shCD147-2).The transfection effect was verified by Western Blot,RT-qPCR and green fluorescence expression.The protein and mRNA expressions of AIM2,Caspase-1,IL-18 and GSDMD were detected by Western Blot and RT-qPCR.The lactate dehydrogenase(LDH)release was measured in the cell culture supernatant,and the cell morphology was observed under the fluorescence inverted microscope;the proliferation ability of cells was measured by CCK-8 and the colony formation ability was measured by cell cloning experiments.Results Western Blot results showed that CD147 protein expression in SiHa cells was the highest compared with that in HCerEpic cells.CD147 low expression lentivirus effectively down-regulated the expression of CD147 in SiHa cells.The results of Western Blot and RT-qPCR experiments showed that the expression of AIM 2,Caspase-1,IL-18,GSDMD protein and mRNA increased in shCD147-1 and shCD147-2 group(P<0.05).Lactate dehydrogenase(LDH)release assay showed that compared with the SiHa group,the shCD147 group had a significant increase in LDH release(P<0.05).Fluorescence inverted microscope showed that the shCD147 group had swelling and vacuolization,showing typical pyroptosis.Compared with the SiHa group,the shCD147-1 and shCD147-2 groups had significantly reduced the cell proliferation and colony formation ability(P<0.05).Conclusion Low expression of CD147 effectively up-regulates the expression of AIM2 inflammation-related factors in cervical cancer SiHa cells,induces the pyroptosis,and inhibits the cell proliferation and cloning.

Objective To detecte the differential metabolites and related pathways in Siha cells of cervical cancer by screening the inhibition of HPV16 E6/E7 expression based on 1H NMR metabolomics so as to identify the key metabolic markers involved in the development of high-risk HPV16 cervical cancer.Methods Siha cells were transfected with RNAi fragments to down-regulate the expression of E6/E7,which were divided into the normal control group(Siha cells),no-load group(si-NON),si-E6 group and si-E7 group,and their transfection efficiency was verified.1H NMR metabolomics was used to reveal the differential metabolites involved in interfering E6/E7 expression in Siha cells.Combined with MetaboAnalyst 5.0 online software,differential metabolites and related metabolic pathways were obtained.Results Fluorescence was observed by inverted fluorescence microscope.Western blotting results showed that compared with Siha group,the expression of E6/E7 in si-E6 group and si-E7 group was decreased(F=145.8,P<0.001).After down-regulating the expression of E6/E7,13 common differential metabolites,including Isoleucine,Leucine and valine,were detected.The results of MetaboAnalyst 5.0 online software analysis suggested that the above metabolites were mainly involved in the biochemical synthesis pathway of aminoacyl-trNA,biochemical synthesis pathway of isoleucine,Leucine and valine;There were 10 metabolic pathways of tyrosine,phenylalanine and tryptophan biochemical synthesis.Conclusion After HPV16 infection,changes of glucose and amino acid metabolism can promote the progression of cervical cancer,which provide a theoretical basis for the prevention and treatment of cervical cancer.

Objective To investigate the effects of different culture conditions(RPMI-1640,DMEM and DMEM/F12 medium)on the passage of MPM cells isolated from the tissues of Malignant pleural mesothelioma(MPM),and to study the effects of CDKN2B on the proliferation,invasion and apoptosis of MPM cells.Methods MPM cells were isolated from MPM tissues and cultured in RPMI-1640,DMEM and DMEM/F12 medium,respectively.Cell proliferation was examined by CCK-8,and the nuclei and chromosomes were observed by Wright-Giemsa staining.Fluorescence intensities of Calretinin,CD141,CK5,EMA and WT-1 were conducted by immunofluorescence assay.The mRNA and protein expression of CDKN2B were detected by RT-qPCR and Western blot,respectively.Transwell was used to detect cell invasion and flow cytometry was used to detect cell apoptosis.Results The established MPM cells showed good viability when passaged to the 10th generation in RPMI-1640,DMEM and DMEM/F12 cultures,and the MPM markers Calretinin,CD141,CK5,EMA and WT-1 were all expressed in the cells.The viability of MPM cells in RPMI-1640 culture medium was relatively stable.CDKN2B was downregulated in MPM cells(P<0.05),and overexpression of CDKN2B significantly suppressed the proliferation(P<0.05),invasion(P<0.05)and epithelial interstitial transformation of MPM cells(P<0.01),and promoted the apoptosis(P<0.01).Conclusion The established MPM cells were stably passaged in RPMI-1640 culture medium,and CDKN2B may be a potential target for the diagnosis and treatment of MPM.

Objective Endothelial injury plays a crucial role in forming deep vein thrombosis.This study aims to compare the effectiveness of various methods for creating rabbit femoral vein thrombotic models after the endothelial injuryso as to provide a solid experimental foundation for further research on the endothelial injury and deep vein thrombosis.Methods Forty-five rabbits were randomly divided into three groups(A,B,C),with 15 cases in each group and subjected to the endothelial injury using the methods of simple clamping,combined complete ligation,and combined incomplete ligation,respectively.The intravascular ultrasonic manifestations and local endothelial pathological changes were compared at 1,3,and 7 days after modeling.Results Significant differences in vascular diameter and Young's modulus values were observed after 7 days of modeling(P<0.05).In pairwise comparisons between the groups,the Young's modulus values in group C were significantly higher than those in groups A and B after 7 days of modeling(P<0.05).Pathological examination confirmed the presence of fibr-inoid thrombus in the blood vessels of group C on the seventh day of modeling.Conclusion Combining simple clam-ping and incomplete ligation can produce a relatively stable endothelial injury and thrombus formation.This method provides a robust experimental model for further investigation into deep vein thrombosis after the endothelial injury.

Objective The aim of this study is to analyze the prevalence of depression and anxiety symptoms and its relationship with the socio-economic position(SEP)among the elderly people in Dai rural areas of Jinggu County,Yunnan province.Methods A multi-stage stratified random sampling method was used to conduct a questionnaire survey among 1409 people aged 60 and over in Dai rural areas of Jinggu County,Yunnan Province.The individual SEP index was constructed using the principal component analysis.Results The prevalence of anxiety symptoms,depression symptoms,and mixed anxiety-depressive disorder symptoms was 4.8%,52.0%,and 4.2% among them,2.6%,49.4%,and 2.3% among the males,and 6.8%,54.5%,and 6.0% among the females respectively.Females had the higher prevalence of anxiety symptoms and mixed anxiety-depressive disorder symptoms than males(P<0.05).Elderly people with the higher level of education,annual per capita household income and SEP had the lower prevalence of anxiety symptoms and mixed anxiety-depressive disorder symptoms than their counterparts(both P<0.05).The prevalence of depression symptoms increased with age(P<0.01).The difference in the prevelence of depression symptoms among the elderly people with the different numbers of chronic conditions was statistically significant(P<0.01).The results of multivariate logistic regression analysis showed that the elderly people with lower SEP were more likely to suffer from the anxiety symptoms(OR=0.707,95% CI:0.566～0.883),depression symptoms(OR=0.492,95% CI:0.438～0.552),and mixed anxiety-depressive disorder symptoms(OR=0.602,95% CI:0.469～0.773).Conclusion There are significant socio-economic differences in the prevalence of anxiety symptoms and depression symptoms among the elderly people in Dai rural areas of Jinggu County,Yunnan province.Future mental health interventions should more focus on females,elderly people with advanced age,multiple chronic diseases and low SEP,so as to reduce the occurrence of depression symptoms and anxiety symptoms.

Objective To investigate the vaccination status and vaccination willingness of novel coronavirus in HIV/AIDS population in Yunnan.Methods From October 2021 to June 2022,a questionnaire survey was conducted among 2180 HIV/AIDS patients in Kunming,Qujing,Yuxi,Zhaotong,Puer,Baoshan,Lincang,Honghe,Wenshan,Xishuangbanna,Dali,Dehong and Nujiang prefectures.The questionnaire included age,sex,education,nationality,education level,vaccination,adverse reactions within 7 days after the vaccination,safety of COVID-19 vaccine,awareness of effectiveness,vaccination willingness and so on.Results Among the subjects,2109 completed 3 injections,accounting for 96.74%,and 71 were not vaccinated,accounting for 3.26% .Within 7 days of inoculation,local adverse reactions occurred in 116 cases,accounting for 5.50%,and systemic adverse reactions occurred in 56 cases,accounting for 2.66% .Injection site pain,fatigue and muscle pain accounted for the highest proportion of adverse symptoms in different sex,age and the Han nationality,while the proportion of minority adverse reactions was very low,and there was no difference among the different sex and age(P>0.05).The main reasons for the reluctance of HIV/AIDS population to be vaccinated were(recommended by doctors)that HIV/AIDS patients could not be vaccinated(67.61%)and may have serious adverse reactions after the vaccination(19.72%).The factors affecting the vaccination were found by logistic regression analysis,whether they were worried about infecting novel coronavirus(OR = 0.121,95% CI = 0.083～0.640,P<0.001)and how much they knew about COVID-19 vaccine(OR = 28.932,95% CI = 15.469～54.115,P<0.001),safety of vaccination(OR = 13.953,95% CI = 4.819～40.404,P<0.001)and belief in the preventive effect of vaccine(OR = 14.017,95% CI = 4.752～41.348,P<0.001)were significant factors affecting vaccination.Among the 13 prefectures and cities,Dehong(20),Zhaotong(21)and Lincang(14)had the largest number of unvaccinated people.Conclusion After the mass vaccination,the rate of adverse reaction in HIV/AIDS population is low,the symptoms are mild,the correct and scientific advice and guidance from doctors and the full understanding of the harmfulness of the disease,the safety,prevention and effectiveness of the vaccine are the key to complete vaccination and put an end to vaccine hesitancy.

Objective To understand the intention of the community diabetes management application and analyze the related factors.Methods Diabetes patients in the community were selected as the research objects,and the diabetes management application intention scale,diabetes electronic health literacy scale,diabetes self-management ability scale and general information questionnaire were randomly conducted for the investigation.Results The score of 286 cases of community diabetes management application intention was 44.38±8.56,the qualification rate was 67.4%,the score of diabetes e-health literacy score was 22.38±7.56,the qualification rate was 28.2%,and the score of diabetes self-management ability score was 43.41±7.96.Through the analysis,it was found that diabetes management application intention,e-health literacy,and self-management ability were affected by patients'education,age,and income.The analysis of related factors showed that the intention to use the diabetes management application was positively related to the electronic health literacy and self-management ability of patients P<0.05.Conclusion The intention to use community diabetes management application is affected by income,education level,age,e-health literacy and self-management ability.The overall level of e-health literacy and self-management ability of diabetes patients is low.It is necessary to improve the e-health literacy and self-management level of diabetes patients.

Objective To analyze the relationship between the common clinical indicators and diabetic foot ulcer(DFU)in type 2 diabetes mellitus(T2DM)patients by using the cross-sectional study and to provide the reference indicators for clinical DFU monitoring and prognosis evaluation.Methods A total of 115 T2DM patients admitted to the Department of Endocrinology,the Second Affiliated Hospital of Kunming Medical University from June 2021 to June 2023 were selected as the study objects and were divided into group A(with DFU)and group B(without DFU)according to whether they had DFU.Those in group A were then divided into group A1(Wagner0-1),group A2(Wagner2-3)and group A3(Wagner4)according to Wagner classification.The differences of general data,blood pressure,blood glucose,blood lipids and other common clinical indicators among all of the groups were compared,and the correlation between DFU and the above indicators was explored.Results Diabetes duration,D-dimer(DD),systolic blood pressure and other indexes in group A were higher than those in group B and there was a statistically significant difference(P<0.05).DD was the main risk factor for DFU in T2DM patients.Diabetic course in patients with DFU was positively correlated with the age(r>0,P<0.05),and negatively correlated with fasting blood glucose(FPG)level and 2hPG level at 2 hours after meals(r<0,P<0.05).The levels of interleukin-6(IL-6)and C-reactive protein(CRP)in A1 and A2 groups were lower than those in A3 group,the levels of neutrophils and leukocytes in A1 group were lower than those in A3 group,and the high density lipoprotein cholesterol(HDL-C)in A1 group was higher than that in A2 group and there was a statistically significant difference(P<0.05).Conclusion DD and systolic blood pressure are the main risk factors for DFU,and DD is closely related to DFU.The older the patients with T2DM,the later the onset of DFU.The worse the blood glucose control,the earlier the onset of DFU.HDL-C is a protective factor for peripheral vascular disease in T2DM patients.