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Diabetic foot ulcers (DFUs) are a serious chronic complication of diabetes mellitus and a leading cause of disability and death in diabetic patients. However, current treatments remain unsatisfactory. Although macrophages are associated with DFU, their exact role in this disease remains uncertain. This study sought to detect macrophage-related genes in DFU and identify possible therapeutic targets. Single-cell datasets (GSE223964) and RNA-seq datasets (GSM68183, GSE80178, GSE134431 and GSE147890) associated with DFU were retrieved from the gene expression omnibus (GEO) database for this study. Analysis of the provided single-cell data revealed the distribution of macrophage subpopulations in the DFU. Four independent RNA-seq datasets were merged into a single DFU cohort and further analysed using bioinformatics. This included differential expression (DEG) analysis, multiple machine learning algorithms to identify biomarkers and enrichment analysis. Finally, key results were validated using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western bolt. Finally, the findings were validated using RT-qPCR and western blot. We obtained 802 macrophage-related genes in single-cell analysis. Differential expression analysis yielded 743 DEGs. Thirty-seven macrophage-associated DEGs were identified by cross-analysis of marker genes with macrophage-associated DEGs. Thirty-seven intersections were screened and cross-analysed using four machine learning algorithms. Finally, HMOX1 was identified as a potentially valuable biomarker. HMOX1 was significantly associated with biological pathways such as the insulin signalling pathway. The results showed that HMOX1 was significantly overexpressed in DFU samples. In conclusion, the analytical results of this study identified HMOX1 as a potentially valuable biomarker associated with macrophages in DFU. The results of our analysis improve our understanding of the mechanism of macrophage action in this disease and may be useful in developing targeted therapies for DFU.
This study explores the intricate relationship between chronic periodontitis (CP) and its implications for wound healing, particularly in the context of arteriosclerotic occlusion (ASO) in the lower extremities. A cohort of 90 individuals was categorized into three groups: those with CP, those with both CP and ASO (ASO + CP) and a healthy control group. Comprehensive assessments including oral examinations, blood tests and questionnaires were conducted. Key oral health indicators such as probing depth (PD), bleeding on probing (BOP) and periodontal inflammatory surface area (PISA) were evaluated to gauge the severity of periodontal wounds. The study found that the ASO + CP group showed a significantly higher number of missing teeth and increased PD compared to the CP group (p < 0.05). Both CP and ASO + CP groups exhibited elevated PD, BOP and PISA compared to the control group (p < 0.05), indicating exacerbated periodontal wounds. Serum analyses showed heightened total cholesterol (TC) and high-sensitivity C-reactive protein (hs-CRP) levels in the ASO + CP group, suggesting a stronger inflammatory response and potential for atherogenesis. Interestingly, FPG and triglycerides (TG) levels did not significantly vary across groups (p > 0.05). Regression analysis identified PD (β = 2.271, p < 0.001) and PISA (β = 0.027, p = 0.001) as significant predictors for ASO presence in CP patients. The findings underscore the clinical correlation between chronic oral wounds in CP and the development of ASO in lower extremities, highlighting the critical need for integrated management strategies focusing on periodontal health to prevent and manage such complex conditions effectively. Elevated inflammatory markers in the ASO + CP group further reinforce the necessity for vigilant monitoring and targeted interventions in these patients.
A meta-analysis was conducted to evaluate the effect of colostomy or ileostomy on post-operative wound complications. The research was tested using Embase, PubMed and Cochrane Library databases. Included were randomized, controlled clinical trials (RCTs). A sensitivity analysis and a meta-analysis were carried out. The results indicated that there were no statistically significant differences in the reduction of wound infection between LC and LI. Out of 268 related studies, 5 publications were chosen and examined for compliance. Literature quality was evaluated throughout the trial. Studies with poor literature were excluded. The data were analysed with RevMan 5.3, and a decision was taken to analyse the data with either a stochastic or a fixed-effects model. There were no significant differences in the incidence of post-operative infection in patients with LC (OR, 0.79; 95% CI, 0.34, 1.81; p = 0.57), and the incidence of post-operative anastomotic fistulae (OR, 0.98; 95% CI, 0.30, 3.15; p = 0.97) was not significantly different from that with LI. These meta-analyses indicate that no significant reduction in the incidence of post-operative infections or anastomotic fistulae was observed by either LC or LI.
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