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1.
BMC Public Health ; 24(1): 24, 2024 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-38166821

RESUMO

INTRODUCTION: Young and middle-aged people are important participants in the fight against health insurance fraud. The study aims to investigate the differences in their willingness to report health insurance fraud and the factors influencing it when it occurs in familiar or unfamiliar healthcare settings. METHODS: Data were obtained from a validated questionnaire from 828 young and middle-aged people. McNemar's test was used to compare the public's willingness to report under the two scenarios. Chi-square tests and multiple logistic regression analysis were used to analyze the determinants of individuals' willingness to report health insurance fraud in different scenarios. RESULTS: Young and middle-aged people were more likely to report health insurance fraud in a familiar healthcare setting than in an unfamiliar one (McNemar's χ²=26.51, P < 0.05). Their sense of responsibility for maintaining the security of the health insurance fund, the government's openness about fraud cases, and the perception of their ability to report had significant positive effects on the public's willingness to report in both settings (P < 0.05). In a familiar healthcare setting, the more satisfied the public is with government measures to protect whistleblowers, the more likely they are to report (OR = 1.44, P = 0.025). Those who perceive the consequences of health insurance fraud to be serious are more likely to report than those who perceive the consequences to be less serious (OR = 1.61, P = 0.042). CONCLUSION: Individuals are more likely to report health insurance fraud in familiar healthcare settings than in unfamiliar ones, in which their awareness of the severity of the consequences of health insurance fraud and their perceived risk after reporting it play an important role. The government's publicizing of fraud cases and enhancing the public's sense of responsibility and ability to maintain the safety of the health insurance fund may be a way to increase their willingness to report, regardless of whether they are familiar with the healthcare setting or not.


Assuntos
Fraude , Seguro Saúde , Pessoa de Meia-Idade , Humanos , Estudos Transversais , Instalações de Saúde , Inquéritos e Questionários , Atenção à Saúde , China
2.
BMC Public Health ; 24(1): 82, 2024 01 03.
Artigo em Inglês | MEDLINE | ID: mdl-38172753

RESUMO

PURPOSE: Medical insurance fraud has caused huge losses to countries around the world, and public reporting has become an important means to combat medical insurance fraud. The attitude of medical insurance fraud whistleblowers affects people's reporting behavior, and understanding people's attitude toward medical insurance fraud whistleblowers provides a basis for further improving the system and policy of public participation in medical insurance fund supervision. METHODS: We adopted the questionnaire method to conduct a national cross-sectional survey of the Chinese public and analyzed the data using Chi-square tests, Fisher's exact tests, and binary logistic regression models. RESULTS: A total of 837 respondents were included, and 81.8% of the population had a supportive attitude toward medical insurance fraud whistleblowers, with gender, whether they had used medical insurance reimbursement, and present life satisfaction being statistically significant (P < 0.05). CONCLUSION: The public is generally supportive of medical insurance fraud whistleblowers, and women, those who have used medical insurance for reimbursement, and those who are satisfied with their lives are more likely to be supportive of medical insurance fraud whistleblowers.


Assuntos
Seguro , Denúncia de Irregularidades , Feminino , Humanos , China , Estudos Transversais , Fraude , Atitude
3.
Int J Equity Health ; 22(1): 90, 2023 05 17.
Artigo em Inglês | MEDLINE | ID: mdl-37194035

RESUMO

BACKGROUND: To assess the effectiveness of China's medicine and health care reform in promoting equity in health care utilization among rural residents, it is necessary to analyze temporal trends in equity in health care utilization among rural residents in China. This study is the first to assess horizontal inequity trends in health care utilization among rural Chinese residents from 2010 to 2018 and provides evidence for improving government health policies. METHODS: Longitudinal data obtained from China Family Panel Studies from 2010 to 2018 were used to determine trends in outpatient and inpatient utilization. Concentration index, concentration curve, and horizontal inequity index were calculated to measure inequalities. Decomposition analysis was applied to measure the contribution of need and non-need factors to the unfairness. RESULTS: From 2010 to 2018, outpatient utilization among rural residents increased by 35.10%, while inpatient utilization increased by 80.68%. Concentration indices for health care utilization were negative in all years. In 2012, there was an increase in the concentration index for outpatient utilization (CI = -0.0219). The concentration index for inpatient utilization decreased from -0.0478 in 2010 to -0.0888 in 2018. Except for outpatient utilization in 2012 (HI = 0.0214), horizontal inequity indices for outpatient utilization were negative in all years. The horizontal inequity index for inpatient utilization was highest in 2010 (HI = -0.0068) and lowest in 2018 (HI = -0.0303). The contribution of need factors to the inequity exceeded 50% in all years. CONCLUSIONS: Between 2010 and 2018, low-income groups in rural China used more health services. This seemingly pro-poor income-related inequality was due in large part to the greater health care need among low-income groups. Government policies aimed at increasing access to health services, particularly primary health care had helped to make health care utilization in rural China more equitable. It is necessary to design better health policies for disadvantaged groups to reduce future inequities in the use of health services by rural populations.


Assuntos
Reforma dos Serviços de Saúde , População Rural , Humanos , Fatores Socioeconômicos , Disparidades em Assistência à Saúde , Aceitação pelo Paciente de Cuidados de Saúde , China
4.
Plant J ; 107(6): 1819-1836, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-34296474

RESUMO

Leaf senescence is a pivotal step in the last stage of the plant life cycle and is influenced by various external and endogenous cues. A series of reports have indicated the involvement of the WRKY transcription factors in regulating leaf senescence, but the molecular mechanisms and signaling pathways remain largely unclear. Here we provide evidence demonstrating that WRKY71 acts as a positive regulator of leaf senescence in Arabidopsis. WRKY71-1D, an overexpressor of WRKY71, exhibited early leaf senescence, while wrky71-1, the WRKY71 loss-of-function mutant, displayed delayed leaf senescence. Accordingly, a set of senescence-associated genes (SAGs) were substantially elevated in WRKY71-1D but markedly decreased in wrky71-1. Chromatin immunoprecipitation assays indicated that WRKY71 can bind directly to the promoters of SAG13 and SAG201. Transcriptome analysis suggested that WRKY71 might mediate multiple cues to accelerate leaf senescence, such as abiotic stresses, dark and ethylene. WRKY71 was ethylene inducible, and treatment with the ethylene precursor 1-amino-cyclopropane-1-carboxylic acid enhanced leaf senescence in WRKY71-1D but caused only a marginal delay in leaf senescence in wrky71-1. In vitro and in vivo assays demonstrated that WRKY71 can directly regulate ETHYLENE INSENSITIVE2 (EIN2) and ORESARA1 (ORE1), genes of the ethylene signaling pathway. Consistently, leaf senescence of WRKY71-1D was obviously retarded in the ein2-5 and nac2-1 mutants. Moreover, WRKY71 was also proved to interact with ACS2 in vitro and in vivo. Treatment with AgNO3 and aminoethoxyvinylglycine and acs2-1 could greatly arrest the leaf senescence of WRKY71-1D. In conclusion, our data revealed that WRKY71 mediates ethylene signaling and synthesis to hasten leaf senescence in Arabidopsis.


Assuntos
Proteínas de Arabidopsis/genética , Arabidopsis/fisiologia , Liases de Carbono-Enxofre/genética , Etilenos/metabolismo , Regulação da Expressão Gênica de Plantas , Folhas de Planta/fisiologia , Senescência Vegetal/fisiologia , Fatores de Transcrição/genética , Oxirredutases do Álcool/genética , Aminoácidos Cíclicos/farmacologia , Arabidopsis/efeitos dos fármacos , Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Imunoprecipitação da Cromatina , Senescência Vegetal/genética , Plantas Geneticamente Modificadas , Regiões Promotoras Genéticas , Receptores de Superfície Celular/genética , Transativadores , Fatores de Transcrição/metabolismo
5.
J Mol Evol ; 90(5): 375-388, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35962830

RESUMO

Diseases and environmental stresses are two distinct challenges for virtually all living organisms. In light of evolution, cellular responses to diseases and stresses might share similar molecular mechanisms, but the detailed regulation pathway is not reported yet.We obtained the transcriptomes and translatomes from several NSCLC (non-small-cell lung cancer) patients as well as from different species under normal or stress conditions. We found that the translation level of gene ATF4 is remarkably enhanced in NSCLC due to the reduced number of ribosomes binding to its upstream open reading frames (uORFs). We also showed the evolutionary conservation of this uORF-ATF4 regulation in the stress response of other species. Molecular experiments showed that knockdown of ATF4 reduced the cell growth rate while overexpression of ATF4 enhanced cell growth, especially for the ATF4 allele with mutated uORFs. Population genetics analyses in multiple species verified that the mutations that abolish uATGs (start codon of uORFs) are highly deleterious, suggesting the functional importance of uORFs.Our study proposes an evolutionarily conserved pattern that enhances the ATF4 translation by uORFs upon stress or disease. We generalized the concept of cellular response to diseases and stresses. These two biological processes may share similar molecular mechanisms.


Assuntos
Fator 4 Ativador da Transcrição/genética , Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Fases de Leitura Aberta , Fenômenos Biológicos , Carcinoma Pulmonar de Células não Pequenas/genética , Códon de Iniciação , Humanos , Neoplasias Pulmonares/genética , Biossíntese de Proteínas
6.
Cost Eff Resour Alloc ; 20(1): 35, 2022 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-35864496

RESUMO

BACKGROUND: In recent years, due to the increasing number of cross-regional medical patients, countries around the world have issued a series of policies or regulations to reduce their out-of-pocket burden. In this context, this study intended to explore the impact of the Spatio-temporal characteristics of cross-regional medical treatment on total medical expenses, medical insurance payments, and out-of-pocket expenses of patients with malignant tumors in low-income areas. METHODS: This study included 54,904 data of cross-provincial medical treatment of malignant tumor patients insured in Heilongjiang Province, China in 2020. Firstly, Microsoft Excel 2019 and ArcGIS 10.2 were applied to conduct a descriptive analysis of the Spatio-temporal characteristics of their cross-provincial medical treatment. Then, binary and multivariate logistic regression models were used to explore the specific impact of economic level and geographical distance of medical regions on total medical expenses, medical insurance payments, and out-of-pocket expenses. RESULTS: The number of cross-regional medical patients showed a gradual upward trend from February to December, and fell back in January. They were concentrated in regions with high economic level and short distance from the insured region, where were more likely to form the group with high out-of-pocket expenses (AOR = 3.620, P < 0.001; AOR = 1.882, P < 0.001). While this possibility in middle-distance medical regions were less (AOR = 0.545, P < 0.001). Afterwards, two sensitivity analysis methods showed that the results were robust. CONCLUSION: The number of cross-regional medical patients with malignant tumors in low-income areas is affected by seasonal factors, meanwhile, their total medical expenses, actual medical insurance payment levels, and out-of-pocket expenses are all affected by the economic level and geographical distance of medical regions. And the middle-distance medical regions may be the best choice for patients with planned cross-regional medical treatment. These provide some evidence for policymakers to improve the fairness and sustainability of medical security for cross-regional medical patients and reduce their direct economic burden of disease.

7.
Biotechnol Appl Biochem ; 69(1): 166-171, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33370481

RESUMO

Myocardial infarction (MI) is considered as one of the major life-threatening health issues worldwide. Growing number of cases every year is demanding rapid, portable, and early detection by the sensing devices for the identification of MI. This research work introduces a modified interdigitated electrode (IDE) sensing surface constructed with single-walled carbon nanotube (SWCN) to detect the cardiac biomarker, C-reactive protein (CRP). CRP-specific aptamer was conjugated with gold nanoparticle and attached on SWCN-constructed IDE surface. This probe-modified sensing surface has reached the limit of CRP detection to 10 pM on a linear regression curve with the regression coefficient of R² = 0.9223 [y = 0.9198x - 0.4326]. Further, control molecules, such as random aptamer sequence and nontarget cardiac biomarker (Troponin I), did not show the current response, indicating the specific CRP detection. This sensing strategy helps to detect the lower level of CRP and diagnose the MI at its earlier stages.


Assuntos
Aptâmeros de Nucleotídeos , Técnicas Biossensoriais , Nanopartículas Metálicas , Infarto do Miocárdio , Nanocompostos , Biomarcadores , Proteína C-Reativa , Técnicas Eletroquímicas , Eletrodos , Ouro , Humanos , Limite de Detecção , Infarto do Miocárdio/diagnóstico
8.
Plant J ; 103(4): 1386-1398, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32391591

RESUMO

Actin depolymerizing factor (ADF) is a key modulator for dynamic organization of actin cytoskeleton. Interestingly, it was found that the ADF1 gene silencing delays flowering, but its mechanism remains unclear. In this study, ADF1 was used as a bait to screen its interacting proteins by the yeast two-hybrid (Y2H) system. One of them, the REM16 transcription factor was identified. As one of the AP2/B3-like transcriptional factor family members, the REM16 contains two B3 domains and its transcript levels kept increasing during the floral transition stage. Overexpression of REM16 accelerates flowering while silencing of REM16 delays flowering. Gene expression analysis indicated that the key flowering activation genes such as CONSTANS (CO), FLOWERING LOCUS T (FT), LEAFY (LFY) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS (SOC1) were upregulated in the REM16 overexpression lines, while the transcription of the flowering suppression gene FLOWERING LOCUS C (FLC) was decreased. In contrast, the REM16 gene silencing lines contained lower transcript levels of the CO, FT, LFY and SOC1 but higher transcript levels of the FLC compared with the wild-type plants. It was proved that REM16 could directly bind to the promoter regions of SOC1 and FT by in vitro and in vivo assays. Genetic analysis supported that REM16 acts upstream of SOC1 and FT in flowering pathways. All these studies provided strong evidence demonstrating that REM16 promotes flowering by directly activating SOC1 and FT.


Assuntos
Proteínas de Arabidopsis/metabolismo , Arabidopsis/crescimento & desenvolvimento , Flores/crescimento & desenvolvimento , Proteínas de Domínio MADS/metabolismo , Fatores Genéricos de Transcrição/metabolismo , Fatores de Transcrição/metabolismo , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Flores/genética , Proteínas de Domínio MADS/genética , Plantas Geneticamente Modificadas , Regiões Promotoras Genéticas , Fatores de Transcrição/genética , Fatores Genéricos de Transcrição/genética , Transcriptoma
9.
IUBMB Life ; 72(5): 1012-1022, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32027086

RESUMO

BACKGROUND: Quercetin, a widely distributed bioflavonoid, plays a role in combating diverse human cancers including non-small cell lung cancer (NSCLC). However, the role of quercetin in reversing the radioresistance of NSCLC cells and its underlying mechanism are far from being elucidated. METHOD: Radiation-resistant NSCLC cell lines were established. Quantitative real-time PCR (qRT-PCR) was used to detect the expression of miR-16-5p and WEE1 G2 checkpoint kinase (WEE1) mRNA in radiation-resistant cells. After being treated with different concentrations of quercetin and different doses of X-ray, cell proliferation and apoptosis were monitored by CCK-8 assay, colony formation assay, and flow cytometry, respectively. Ultimately, the targeting relationship between miR-16-5p and WEE1 was verified via a dual fluorescent reporter gene assay. RESULTS: The expression of miR-16-5p was down-regulated in radiation-resistant cells, while the expression of WEE1 was up-regulated. Quercetin enhanced the radiosensitivity of NSCLC cells in a dose- and time-dependent manner. Furthermore, quercetin treatment increased the expression of miR-16-5p and decreased the expression of WEE1. The function of quercetin was reversed by miR-16-5p inhibitors or the transfection of WEE1 overexpressing plasmids. CONCLUSION: In conclusion, quercetin enhanced the radiosensitivity of NSCLC cells via modulating the expression of miR-16-5p and WEE1.


Assuntos
Quercetina/farmacologia , Tolerância a Radiação/efeitos dos fármacos , Radiossensibilizantes/farmacologia , Antagomirs/genética , Antagomirs/metabolismo , Apoptose/efeitos dos fármacos , Apoptose/genética , Apoptose/efeitos da radiação , Carcinoma Pulmonar de Células não Pequenas/radioterapia , Proteínas de Ciclo Celular/genética , Proteínas de Ciclo Celular/metabolismo , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Proliferação de Células/genética , Proliferação de Células/efeitos da radiação , Relação Dose-Resposta a Droga , Regulação Neoplásica da Expressão Gênica , Genes Reporter , Humanos , Luciferases/genética , Luciferases/metabolismo , Neoplasias Pulmonares/radioterapia , MicroRNAs/genética , MicroRNAs/metabolismo , Modelos Biológicos , Plasmídeos/química , Plasmídeos/metabolismo , Proteínas Tirosina Quinases/genética , Proteínas Tirosina Quinases/metabolismo , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Tolerância a Radiação/genética , Transdução de Sinais , Raios X
10.
Proteomics ; 17(21)2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28898534

RESUMO

Porcine reproductive and respiratory syndrome virus (PRRSV) causes porcine reproductive and respiratory syndrome (PRRS), which is characterized by reproductive failure and respiratory disorders. The secretome of PRRSV-infected porcine alveolar macrophages (PAMs), which are the primary target cells of PRRSV, was analyzed by label-free quantitative proteomics to gain a profile of proteins secreted during PRRSV infection. A total of 95 secreted proteins with differentially expressed levels between PRRSV- and mock-infected PAMs was screened. Among these, the expression levels of 49 and 46 proteins were up-regulated and down-regulated, respectively, in PRRSV-infected cell supernatants, as compared with mock-infected cell supernatants. Bioinformatic analysis revealed that the differentially expressed proteins were enriched in several signaling pathways related to the immune and inflammatory responses, such as the Toll-like receptor signaling pathway and NF-kappa B signaling pathway, and involved in a great diversity of biological processes, such as protein binding and localization, as well as immune effector processes. In addition, PRRSV-infected cell supernatants induced significant expression of inflammatory cytokines in vascular endothelial cells. These findings suggest that the secreted proteins play potential roles in the host immune and inflammatory responses as well as PRRSV replication, thereby providing new insights into cell-to-cell communication during PRRSV infection.


Assuntos
Macrófagos Alveolares/metabolismo , Síndrome Respiratória e Reprodutiva Suína/metabolismo , Vírus da Síndrome Respiratória e Reprodutiva Suína/fisiologia , Proteoma/análise , Proteômica/métodos , Animais , Células Cultivadas , Citocinas/metabolismo , Interações Hospedeiro-Patógeno , Síndrome Respiratória e Reprodutiva Suína/virologia , Transdução de Sinais , Suínos
11.
Phys Rev Lett ; 114(1): 017001, 2015 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-25615497

RESUMO

Majorana fermions have been intensively studied in recent years for their importance to both fundamental science and potential applications in topological quantum computing. They are predicted to exist in a vortex core of superconducting topological insulators. However, it is extremely difficult to distinguish them experimentally from other quasiparticle states for the tiny energy difference between Majorana fermions and these states, which is beyond the energy resolution of most available techniques. Here, we circumvent the problem by systematically investigating the spatial profile of the Majorana mode and the bound quasiparticle states within a vortex in Bi(2)Te(3) films grown on a superconductor NbSe(2). While the zero bias peak in local conductance splits right off the vortex center in conventional superconductors, it splits off at a finite distance ∼20 nm away from the vortex center in Bi(2)Te(3). This unusual splitting behavior has never been observed before and could be possibly due to the Majorana fermion zero mode. While the Majorana mode is destroyed by the interaction between vortices, the zero bias peak splits as a conventional superconductor again. This work provides self-consistent evidences of Majorana fermions and also suggests a possible route to manipulating them.

12.
Cardiology ; 127(2): 133-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24335026

RESUMO

OBJECTIVES: The present study tested the hypothesis that pretreatment with metformin decreases postprocedural myocardial injury and improves clinical outcomes in metabolic syndrome patients following percutaneous coronary intervention (PCI). METHODS: We enrolled 152 metabolic syndrome patients with no prior history of metformin treatment. Patients scheduled for elective coronary intervention were randomized to the metformin or control group 7 days before the procedure. Creatine kinase-MB (CK-MB) and troponin I levels were measured at baseline and 8 and 24 h after the procedure, and clinical outcomes were monitored for 1 year. RESULTS: Post-PCI myocardial injury as indicated by CK-MB elevation (14.5 vs. 32.9%, p = 0.008) and troponin I elevation (14.5 vs. 34.2%, p = 0.005) was significantly lower in the metformin group than in the control group. Postprocedural peak values of CK-MB (2.70 ± 4.30 vs. 6.29 ± 8.03 ng/ml, p < 0.001) and troponin I (0.02 ± 0.05 vs. 0.07 ± 0.10 ng/ml, p = 0.001) were also significantly lower in the metformin group than in the control group. At 1 year, the composite endpoint of death from any cause, post-PCI myocardial infarction (MI), MI after PCI hospitalization or ischemia-driven target lesion revascularization occurred in 7.9% of metformin-treated patients and 28.9% of controls (hazard ratio 0.25, 95% CI 0.10-0.62, log rank p = 0.001). CONCLUSIONS: A 7-day metformin pretreatment regimen (250 mg 3 times a day) significantly reduces postprocedural myocardial injury and improves 1-year clinical outcomes in metabolic syndrome patients undergoing PCI.


Assuntos
Cardiotônicos/uso terapêutico , Síndrome Metabólica/complicações , Metformina/uso terapêutico , Traumatismo por Reperfusão Miocárdica/prevenção & controle , Adulto , Idoso , Biomarcadores/metabolismo , Creatina Quinase Forma MB/metabolismo , Humanos , Pessoa de Meia-Idade , Infarto do Miocárdio/terapia , Intervenção Coronária Percutânea/efeitos adversos , Estudos Prospectivos , Troponina I/metabolismo , Adulto Jovem
13.
Gene ; 927: 148617, 2024 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-38795855

RESUMO

PURPOSE: This study aimed to investigate the association between single nucleotide polymorphisms (SNPs) in DPF3 and susceptibility to pulmonary tuberculosis (PTB) in the Northwest Chinese Han population. METHODS: Genotyping of four DPF3 SNPs (rs10140566, rs75575287, rs202075571, and rs61986330) was performed using Agena MassARRAY from 488 PTB patients and 488 healthy controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using logistic regression. Multifactor dimensionality reduction (MDR) analysis was employed to investigate the effect of SNP-SNP interactions on PTB risk. The GSE54992 dataset was analyzed using R software to ascertain DPF3 expression levels. RESULTS: Overall analysis revealed that rs202075571 (allele: OR = 1.31, p = 0.015; CC vs. TT: OR = 1.97, p = 0.049; dominant: OR = 1.33, p = 0.032) and rs61986330 (allele: OR = 1.38, p = 0.010; CA vs. CC: OR = 1.35, p = 0.044; dominant: OR = 1.40, p = 0.019) were associated with an increased PTB risk. Stratified analysis showed that rs10140566 was a PTB risk factor in females, those aged ≤40 and non-smokers, and rs202075571 was associated with PTB risk in individuals aged >40 and smokers, and rs61986330 was associated with PTB risk in males, those aged >40 and smokers. The four SNPs model demonstrated significant predictive potential for PTB risk. Furthermore, DPF3 exhibited higher expression in PTB compared to healthy controls. CONCLUSION: DPF3 polymorphisms (rs10140566, rs202075571, and rs61986330) are associated with an increased risk of PTB, providing valuable new insights into the mechanism of PTB.


Assuntos
Proteínas de Ligação a DNA , Predisposição Genética para Doença , Fatores de Transcrição , Tuberculose Pulmonar , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Alelos , Estudos de Casos e Controles , China/epidemiologia , Proteínas de Ligação a DNA/genética , População do Leste Asiático/genética , Genótipo , Polimorfismo de Nucleotídeo Único , Fatores de Risco , Fatores de Transcrição/genética , Tuberculose Pulmonar/genética
14.
Virulence ; 15(1): 2356692, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38797966

RESUMO

The increasing antibiotic resistance poses a significant global health challenge, threatening our ability to combat infectious diseases. The phenomenon of collateral sensitivity, whereby resistance to one antibiotic is accompanied by increased sensitivity to another, offers potential avenues for novel therapeutic interventions against infections unresponsive to classical treatments. In this study, we elucidate the emergence of tobramycin (TOB)-resistant small colony variants (SCVs) due to mutations in the hemL gene, which render S. Typhimurium more susceptible to nitrofurantoin (NIT). Mechanistic studies demonstrate that the collateral sensitivity in TOB-resistant S. Typhimurium SCVs primarily stems from disruptions in haem biosynthesis. This leads to dysfunction in the electron transport chain (ETC) and redox imbalance, ultimately inducing lethal accumulation of reactive oxygen species (ROS). Additionally, the upregulation of nfsA/B expressions facilitates the conversion of NIT prodrug into its active form, promoting ROS-mediated bacterial killing and contributing to this collateral sensitivity pattern. Importantly, alternative NIT therapy demonstrates a significant reduction of bacterial load by more than 2.24-log10 cfu/g in the murine thigh infection and colitis models. Our findings corroborate the collateral sensitivity of S. Typhimurium to nitrofurans as a consequence of evolving resistance to aminoglycosides. This provides a promising approach for treating infections due to aminoglycoside-resistant strains.


Assuntos
Antibacterianos , Nitrofurantoína , Salmonella typhimurium , Tobramicina , Nitrofurantoína/farmacologia , Animais , Salmonella typhimurium/efeitos dos fármacos , Salmonella typhimurium/genética , Tobramicina/farmacologia , Camundongos , Antibacterianos/farmacologia , Testes de Sensibilidade Microbiana , Farmacorresistência Bacteriana/genética , Mutação , Feminino , Espécies Reativas de Oxigênio/metabolismo , Infecções por Salmonella/microbiologia , Infecções por Salmonella/tratamento farmacológico , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo
15.
Phytomedicine ; 131: 155771, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38851101

RESUMO

BACKGROUND: Sepsis often leads to significant morbidity and mortality due to severe myocardial injury. As is known, the activation of NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome crucially contributes to septic cardiomyopathy (SCM) by facilitating the secretion of interleukin (IL)-1ß and IL-18. The removal of palmitoyl groups from NLRP3 is a crucial step in the activation of the NLRP3 inflammasome. Thus, the potential inhibitors that regulate the palmitoylation and inactivation of NLRP3 may significantly diminish sepsis-induced cardiac dysfunction. PURPOSE: The present study sought to explore the effects of the prospective flavonoid compounds targeting NLRP3 on SCM and to elucidate the associated underlying mechanisms. STUDY DESIGN: The palmitoylation and activation of NLRP3 were detected in H9c2 cells and C57BL/6 J mice. METHODS/RESULTS: Echocardiography, histological staining, western blotting, co-immunoprecipitation, qPCR, ELISA and network pharmacology were used to assess the impact of vaccarin (VAC) on SCM in mice subjected to lipopolysaccharide (LPS) injection. From the collection of 74 compounds, we identified that VAC had the strongest capability to suppress NLRP3 luciferase report gene activity in cardiomyocytes, and the anti-inflammatory characteristics of VAC were further ascertained by the network pharmacology. Exposure of LPS triggered apoptosis, inflammation, oxidative stress, mitochondrial disorder in cardiomyocytes. The detrimental alterations were significantly reversed upon VAC treatment in both septic mice and H9c2 cells exposed to LPS. In vivo experiments demonstrated that VAC treatment alleviated septic myocardial injury, indicated by enhanced cardiac function parameters, preserved cardiac structure, and reduced inflammation/oxidative response. Mechanistically, VAC induced NLRP3 palmitoylation to inactivate NLRP3 inflammasome by acting on zDHHC12. In support, the NLRP3 agonist ATP and the acylation inhibitor 2-bromopalmitate (2-BP) prevented the effects of VAC. CONCLUSION: Our findings suggest that VAC holds promise in protecting against SCM by mitigating cardiac oxidative stress and inflammation via priming NLRP3 palmitoylation and inactivation. These results lay the solid basis for further assessment of the therapeutic potential of VAC against SCM.


Assuntos
Cardiomiopatias , Inflamassomos , Camundongos Endogâmicos C57BL , Proteína 3 que Contém Domínio de Pirina da Família NLR , Sepse , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Animais , Cardiomiopatias/tratamento farmacológico , Sepse/tratamento farmacológico , Sepse/complicações , Camundongos , Masculino , Inflamassomos/metabolismo , Inflamassomos/efeitos dos fármacos , Lipoilação/efeitos dos fármacos , Ratos , Estresse Oxidativo/efeitos dos fármacos , Linhagem Celular , Lipopolissacarídeos , Miócitos Cardíacos/efeitos dos fármacos , Miócitos Cardíacos/metabolismo , Interleucina-1beta/metabolismo , Interleucina-18/metabolismo
16.
Front Oncol ; 13: 1221309, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37601678

RESUMO

Purpose: To report two cases of hepatic cavernous hemangioma, a rare complication, in patients with locally advanced and advanced non-squamous non-small cell lung cancer (NSCLC) treated with PD-1 inhibitors. Additionally, to share clinical experiences related to the management of this condition. Methods: Two patients with locally advanced and advanced non-squamous non-small cell lung cancer (NSCLC) were enrolled in our hospital. Following the NCCN guidelines and expert consensus, both patients received standard treatment with Camrelizumab (PD-1 inhibitor). Subsequent abdominal CT scans revealed hepatic focal lesions that did not exhibit typical characteristics of metastatic tumors. Therefore, further systematic investigation was conducted to study the hepatic focal lesions. Results: (1) Ultrasound-guided percutaneous biopsy confirmed the diagnosis of hepatic cavernous hemangioma. A multidisciplinary consultation concluded that it was an adverse drug reaction to Camrelizumab. (2) Ten-gene testing for both patients did not reveal any driver gene mutations associated with lung cancer. Apart from the occurrence of hepatic cavernous hemangioma, there were no signs of disease progression or worsening. (3) Both patients had resolution of hepatic cavernous hemangioma after switching to alternative PD-1 inhibitors or discontinuing PD-1 inhibitor treatment. One patient experienced hemorrhage related to the hepatic hemangioma, which was managed with hemostasis and symptomatic treatment, resulting in improvement. (4) Clinical outcomes: The first patient achieved a progression-free survival (PFS) of 33 months in first-line treatment and had not reached the PFS endpoint in second-line treatment, with an overall survival exceeding 56 months. The second patient had not reached the PFS endpoint in first-line treatment, with an overall survival exceeding 31 months. Conclusion: Hepatic cavernous hemangioma is a rare and serious adverse reaction associated with PD-1 inhibitors. Camrelizumab may interact with the PD-1 molecule in a different manner compared to other PD-1 inhibitors, affecting the regulation of the VEGFR/ULBP2 signaling pathway. In future studies, next-generation sequencing may provide detailed molecular pathology information, which could help explain individual differences and provide a basis for the prevention or intervention of hepatic cavernous hemangioma.

17.
IEEE Trans Biomed Eng ; 70(3): 812-823, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36040933

RESUMO

OBJECTIVE: Myocardial infarction (MI) causes rapid and permanent damage to the heart muscle. Therefore, it can deteriorate the myocardial structure and function if not timely diagnosed and treated. However, it is difficult to determine the precise localization of MI based on vectorcardiogram (VCG) due to the existing studies ignore the spatiotemporal features of VCG. METHODS: In this paper, a precise MI localization method was proposed based on Tucker decomposition. The multi-scale characteristics of wavelet transform and the spatiotemporal characteristics of VCG were used to construct the VCG tensor containing the local and the spatiotemporal information. The VCG tensor was compressed in the time dimension based on Tucker decomposition to remove redundant information and extract the local spatiotemporal features. The features were fed back to the TreeBagger classifier. RESULTS: The proposed method achieved a total accuracy of 99.80% for 11 types of MI on the benchmark Physikalisch-Technische Bundesanstalt database. The area under the receiver operating characteristic curves and precision-recall curves of each kind of VCG signal was more than 0.88. CONCLUSION: The proposed algorithm effectively realized the classification of normal and 11 categories of MI using VCG. SIGNIFICANCE: Therefore, this study provides new ideas for the intelligent diagnosis of MI based on VCG.


Assuntos
Infarto do Miocárdio , Vetorcardiografia , Humanos , Vetorcardiografia/métodos , Infarto do Miocárdio/diagnóstico , Análise de Ondaletas , Algoritmos , Bases de Dados Factuais
18.
Front Public Health ; 11: 1079173, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37064691

RESUMO

Objective: This study aimed to explore the current state of governance of full population coverage of health insurance in China and its influencing factors to provide empirical references for countries with similar social backgrounds as China. Methods: A cross-sectional quantitative study was conducted nationwide between 22 January 2020 and 26 January 2020, with descriptive statistics, analysis of variance, and logistic regression models via SPSS 25.0 to analyze the effectiveness and influencing factors of the governance of full population coverage of health insurance in China. Results: The effectiveness of the governance relating to the total population coverage of health insurance was rated as good by 59% of the survey respondents. According to the statistical results, the governance of the public's ability to participate in insurance (OR = 1.516), the degree of information construction in the medical insurance sector (OR = 2.345), the government's governance capacity (OR = 4.284), and completeness of the government's governance tools (OR = 1.370) were all positively correlated (p < 0.05) on the governance effect of the whole population coverage of health insurance. Conclusions: The governance of Chinese health insurance relating to the total population coverage is effective. To effectively improve the effectiveness of the governance relating to the total population coverage of health insurance, health insurance information construction, governance capacity, and governance tools should be the focus of governance to further improve the accurate expansion of and increase the coverage of health insurance.


Assuntos
Seguro Saúde , Estudos Transversais , China , Inquéritos e Questionários , Modelos Logísticos
19.
Front Biosci (Landmark Ed) ; 28(5): 95, 2023 05 22.
Artigo em Inglês | MEDLINE | ID: mdl-37258469

RESUMO

BACKGROUND: Lung cancer is one of the most serious malignant tumors endangering human health and life. This study focused on evaluating the association between single nucleotide polymorphisms (SNPs) of the glutaminase (GLS) and lung cancer susceptibility in the Chinese Han population. METHODS: A total of 684 lung cancer patients and 684 healthy individuals were enrolled. Five GLS SNPs (rs143584207 C/A, rs117985587 T/C, rs74271715 G/T, rs2355570 G/A, and rs6713444 A/G) were screened as candidate genetic loci. Odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated to assess the association between GLS SNPs and lung cancer susceptibility. False-positive report probability (FPRP) analysis further verified whether the positive results deserved attention. Finally, the multi-factor dimensionality reduction (MDR) method was applied to analyze the interactions between SNPs. RESULTS: The overall analysis revealed that GLS rs143584207 and rs6713444 were significantly associated with lung cancer susceptibility. The subgroup and clinical information analyses further revealed that GLS rs143584207 and rs6713444 could remarkably reduce lung cancer susceptibility in different subgroups (age >60, females, body mass index (BMI) <24, and lung adenocarcinoma). Rs143584207 could significantly reduce lung cancer susceptibility in non-smokers. Additionally, rs6713444 also had a protective effect on patients with advanced lung cancer. CONCLUSIONS: Our study indicated that GLS rs143584207 and rs6713444 could strikingly reduce lung cancer susceptibility in the Chinese Han population, which will give a new direction for the timely treatment of lung cancer.


Assuntos
Predisposição Genética para Doença , Glutaminase , Neoplasias Pulmonares , Feminino , Humanos , Estudos de Casos e Controles , População do Leste Asiático , Genótipo , Glutaminase/genética , Neoplasias Pulmonares/genética , Polimorfismo de Nucleotídeo Único , Fatores de Risco , Pessoa de Meia-Idade
20.
Viruses ; 15(6)2023 06 02.
Artigo em Inglês | MEDLINE | ID: mdl-37376612

RESUMO

Japanese encephalitis virus (JEV) causes acute viral encephalitis in humans and reproductive disorders in pigs. JEV emerged during the 1870s in Japan, and since that time, JEV has been transmitted exclusively throughout Asia, according to known reporting and sequencing records. A recent JEV outbreak occurred in Australia, affecting commercial piggeries across different temperate southern Australian states, and causing confirmed infections in humans. A total of 47 human cases and 7 deaths were reported. The recent evolving situation of JEV needs to be reported due to its continuous circulation in endemic regions and spread to non-endemics areas. Here, we reconstructed the phylogeny and population dynamics of JEV using recent JEV isolates for the future perception of disease spread. Phylogenetic analysis shows the most recent common ancestor occurred about 2993 years ago (YA) (95% Highest posterior density (HPD), 2433 to 3569). Our results of the Bayesian skyline plot (BSP) demonstrates that JEV demography lacks fluctuations for the last two decades, but it shows that JEV genetic diversity has increased during the last ten years. This indicates the potential JEV replication in the reservoir host, which is helping it to maintain its genetic diversity and to continue its dispersal into non-endemic areas. The continuous spread in Asia and recent detection from Australia further support these findings. Therefore, an enhanced surveillance system is needed along with precautionary measures such as regular vaccination and mosquito control to avoid future JEV outbreaks.


Assuntos
Vírus da Encefalite Japonesa (Espécie) , Encefalite Japonesa , Humanos , Animais , Suínos , Vírus da Encefalite Japonesa (Espécie)/genética , Encefalite Japonesa/epidemiologia , Filogenia , Teorema de Bayes , Austrália/epidemiologia , Genótipo
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