Advances in wound care最新文献

Objective: Impairments in the differentiation and migratory capacity of epidermal stem cells (ESCs) are pivotal factors contributing to delayed wound healing. High mobility group box1 (HMGB1) has recently emerged as a potential target for tissue repair. Therefore, we aimed to investigate the role and molecular mechanisms of HMGB1 in ESCs during the wound-healing process. Approach: Initially, we examined the expression of HMGB1 and the differentiation of ESCs in normal skin, normal wounds and chronic wounds. Then, we assessed the ESC migration and differentiation, and the key markers in the Wnt/Notch signaling pathways, after treatment of HMGB1 and inhibitor, and the knockdown of toll-like receptor 4 (TLR4), using scratch assay, qPCR, western blotting, and immunofluorescence. Finally, we conducted mice models to analyze the healing rates and quality in vivo. Results: HMGB1 was decreased across all epidermal layers, and the differentiation of ESCs was hindered in diabetic foot ulcer. In vitro, HMGB1 enhanced both the migration and differentiation of ESCs while stimulating the expression of the Wnt/Notch pathway within ESCs. However, the downregulation of TLR4 negated these effects. Finally, our in vivo experiments provided evidence that HMGB1 facilitates wound healing and epidermis differentiation via TLR4 and Wnt/Notch signaling pathways. Innovation: This study innovatively introduces HMGB1 as a novel target for skin wound healing and elucidates its mechanisms of action. Conclusions: HMGB1 accelerated wound healing by promoting the differentiation of epidermal stem cells through the "HMGB1-TLR4-Wnt/Notch" axis, which reveals a new potential mechanism and target to expedite wound healing.

Objective: The objective of this study was to evaluate the impact of a multidisciplinary team (MDT) approach in the management of diabetic foot ulcers (DFUs).

Approach: A multidisciplinary diabetic foot care center (MDDFCC) was opened at our institution in August 2018. Outcomes of DFU treatment, including re-admission, amputation, and mortality rates, were compared before and after opening the MDDFCC.

Results: Patients seen after the MDDFCC was opened had a lower risk of 1-year re-admission (hazard ratio [HR] = 0.697, 95% confidence interval [CI]: 0.387-0.988), 1-year major amputation (HR = 0.447, 95% CI: 0.091-0.984), and 1-year disease-specific mortality (HR = 0.277, 95% CI: 0.105-0.730). PEDIS score (HR = 2.343, 95% CI: 1.264-2.971), history of dialysis (HR = 1.858, 95% CI: 1.258-4.053), and consultation with a physiatrist (HR = 0.368, 95% CI: 0.172-0.788), orthopedist (HR = 0.105, 95% CI: 0.042-0.261), or social worker (HR = 0.370, 95% CI: 0.082-0.871) were associated with 1-year major amputation. One-year major amputation (HR = 2.636, 95% CI: 1.586-4.570), age (HR = 1.094, 95% CI: 1.051-1.140), and C-reactive protein level (HR = 1.052, 95% CI: 1.008-1.098) were associated with 1-year disease-specific mortality.

Innovation: Plastic surgeons received patients at the MDDFCC, with active participation by all contributing members. This arrangement brought advantages, including more aggressive and timely surgical intervention, a more timely and higher rate of percutaneous transluminal angioplasty, and equally robust integrated medical care by all other members.

Conclusion: The MDDFCC approach may be a potential organizational structure with for treating DFUs, resulting in significant improvements in outcomes of DFU including a lower re-admission, amputation, and mortality.

Objective: To evaluate global, regional, and national trends in the prevalence and disability-adjusted life years (DALYs) of pressure injuries (PIs) from 1990 to 2021 and project future trends to 2035, based on data from the Global Burden of Disease (GBD) study.

Approach: This study used GBD 2021 data to analyze PIs prevalence and DALYs by age, sex, and Sociodemographic Index (SDI) region. The Bayesian age-period-cohort model was employed for temporal trend analysis and future projections.

Results: From 1990 to 2021, the global prevalence slightly decreased from 8.246 to 7.920 per 100,000 (estimated annual percentage change -0.023%), whereas DALYs decreased by 9.7%. High-SDI regions presented significant DALY reductions (-39.3%), whereas middle- and low-middle-SDI regions presented increased prevalence rates (20.5% and 28.9%, respectively). The prevalence was highest in the ageing population, peaking in the 95+ year age group. Projections estimate that there will be 720,660 global cases by 2035, with the greatest burden expected among older adults in developing regions.

Innovation: This study provides a comprehensive longitudinal analysis of PIs, revealing global disparities and emphasizing demographic-specific risks, especially in ageing populations and low-SDI regions. Bayesian modeling offered robust future projections.

Conclusion: Despite modest improvements globally, significant disparities in the prevalence of PIs persist, particularly in developing regions and among older adults. Targeted interventions, preventive strategies, and health care policies are critical for addressing these challenges and mitigating future disease burdens.

Significance: This systematic review was conducted to assess the quality of clinical practice guidelines (CPGs) on prevention and management of pressure injury (PI) in patients undergoing prone position ventilation (PPV) and summarize the recommendations based on the analyses of the CPGs.

Recent advances: We searched the PubMed, Cochrane library, Embase databases, guideline websites, professional association, quality standards, and Wound-Related Research Journals from January 1, 2010 to August 31, 2024. Included guidelines were those with recommendations for prevention and management of PI in patients undergoing PPV published in English. Four researchers independently assessed the eligible studies and extracted the data. Appraisal of Guidelines Research & Evaluation (AGREE II) instrument and the Reporting Items for Practice Guidelines in Healthcare checklist were used to assess the quality of the CPGs.

Critical issues: A total of 13 CPGs were included in this review. AGREE II demonstrated that the highest mean score was based on the scope and purpose and was 73.65 ± 10.91, whereas the lowest mean score was based on the editorial independence and was 49.79 ± 19.49. The scores of inter-rater agreements for AGREE-II quality appraisal ranged from 0.86 to 0.96. Recommendations for prevention and management of PI in patients undergoing PPV were inconsistent.

Future directions: The included CPGs were limited due to methodological issues and exhibited discrepancies in the coverage of important topics. Therefore, existing evidence should be used to propose identifiable recommendations and strengthen the rigor and standardization of guideline development in future research.

Significance: Negative pressure wound therapy (NPWT) was introduced in clinical practice in the early 1990s and has become widely used to manage wounds in inpatient and outpatient care. Recent Advances: Evolutions of the initial technology include the development of new dressing interfaces and tubing configurations, the addition of instillation to improve cleansing, and various changes in design to improve portability. Research has been conducted to understand mechanisms of action and to demonstrate clinical utility. NPWT has been suggested as a valuable approach for various complex and/or nonhealing wounds, and recommendations for its use have emerged in several guidelines. Future Directions: The evidence, composed of a combination of randomized controlled trials, case series, cohort studies, real-world evidence, systematic reviews, meta-analyses, and expert opinion, is heterogeneous and still building. This special mini forum issue presents the current state of the science for NPWT and new studies providing insights on some innovative ways clinicians use this technology to help improve outcomes in a variety of wound types.

Objective: A new configuration of closed-incision negative pressure therapy (ciNPT) dressings now covers the incision and a broader area of peri-incisional tissues. We have implemented these ciNPT dressings following simple mastectomy (SM) or skin-sparing mastectomy with implant-based reconstruction (IBR). This study assesses patient-reported outcomes of this new protocol. Approach: Patients underwent SM or IBR for breast cancer. ciNPT with wide-coverage dressings were placed over the entire breast, and -125 mmHg was applied for 14 days. Upon dressing removal, patients rated their experience using the Wound-Q™ Suction Device Scale and recorded their satisfaction on a Likert scale ranging 1-5. Results: Thirteen SM patients and 12 IBR patients were included in the study. The median age was 62 years, and SM patients were significantly older (p < 0.01). Patients rated the ciNPT device highest on items relating to its function and appearance, and lowest on noise and interference with sleep and physical activity. The overall mean score for the combined cohort was 64.8/100. The mean score for SM patients (74.8 ± 19.9) was significantly greater than for IBR patients (53.9 ± 9.6, p < 0.01). The mean overall patient satisfaction rating was 3.92 on a 5-point scale; 4.0 in the SM group and 3.8 in the IBR group. Innovation: This study is the first to report on the patient experience with these newly available wide-coverage ciNPT dressings. Conclusion: Overall, the dressing was well-tolerated by patients, and satisfaction was high. The positive reception of ciNPT with wide-coverage dressings supports continued use at our hospital.

Objective: To evaluate if treatment of diabetic wounds by copper oxide impregnated dressings (COD) is noninferior to negative pressure wound therapy (NPWT).

Approach: Following the CONSORT guidelines, patients with diabetes mellitus (type 1 or type 2) and noninfected wounds eligible for treatment with NPWT were randomized into two groups. One group received NPWT followed by standard wound care dressings, whereas the other was treated exclusively with COD. The primary outcome was wound size reduction, measured blindly using a 3D wound-imaging system. Secondary outcomes included patient and caregiver convenience (assessed via visual analog scores), cost, and additional wound parameters.

Results: COD showed statistically significant noninferiority to NPWT in wound size reduction throughout the study (p < 0.01). The percentage of wounds that closed was 47.83% (11/23) and 34.78% (8/23) in the COD and NPWT arms, respectively (p > 0.05). The average time to wound closure, adjusted to potential confounders, such as gender, age, body mass index, diabetes, and smokers, was similar in both arms (p > 0.05). COD were found to be more convenient than NPWT for both patients (p < 0.001) and caregivers (p = 0.003), with a significantly shorter application time (p < 0.001). The COD cost was 14% of NPWT cost ($470 compared with $3,360).

Innovation: COD may be considered as the first line of treatment for diabetic foot wounds when NPWT seems indicated.

Conclusions: Using copper dressings as a first line of treatment of diabetic wounds, when NPWT is indicated, is expected to reduce health costs, improve convenience, and increase compliance without compromising the final outcome.

Objective: Oral mucosal wound healing is not completely understood, and effective therapies are lacking. This study explores the potential of an adipose-derived stem cell (ADSC) exosome sheet in enhancing intraoral wound healing in rats.

Approach: An ADSC exosome sheet derived from Tisseel and rat adipose tissue (ADSC-exo) was applied to 16 rats with 6 mm full-thickness mucosal hard palate wounds. Eight wounds received ADSC-exo with a superficial occlusive dressing (ADSC-exo group), and eight received only an occlusive dressing (control group). Wound closure was monitored on days 0, 2, 4, 7, and 10, with dressings changed every 2 days. On day 10, rats were sacrificed, and wounds (n = 8 per group) were collected for immunohistochemical analysis. In vitro, four ADSC-exosome concentrations (0, 4.5 × 10¹¹, 9 × 10¹¹, and 18 × 10¹¹ exosomes/mL; n = 4 per group) were applied to rat oral mucosal fibroblasts to assess migration speed.

Results: ADSC-exo accelerated wound closure (18% ± 5% vs. 35% ± 9% of initial wound area; p = 0.002) and fibroblast migration (for 18 × 10¹¹ exosomes/mL at 24 h: 29.7% ± 3% vs. 62.2% ± 4% of initial gap area; p < 0.0001) compared with the control. ADSC-exo promoted reepithelialization (87% ± 14% vs. 21% ± 6%; p < 0.0001), proliferation (34 ± 12 vs. 18 ± 7 Ki67+/high-power field [HPF]; p = 0.004), and neovascularization (28 ± 9 vs. 11 ± 5 CD31+/HPF; p = 0.0002) while reducing inflammation (4 ± 1 vs. 13 ± 9 CD68+/HPF; p < 0.0001) and increasing M2 macrophages (9.2 ± 2 vs. 4.2 ± 3 CD163+/HPF; p = 0.0008). ADSC-exo increased Transforming Growth Factor beta 1 (TGF-β1) (1.3 ± 0.3 vs. 0.9 ± 0.2; p = 0.006), Smad3 (0.9 ± 0.02 vs. 0.7 ± 0.1; p = 0.006), and collagen I (1.5 ± 0.9 vs. 0.5 ± 0.3; p = 0.005) while downregulating caspase-3 (0.7 ± 0.3 vs. 1.1 ± 0.2; p = 0.003) and Bax (0.9 ± 0.2 vs. 1.4 ± 0.1; p < 0.0001).

Innovation: This is the first study to demonstrate the pro-wound healing effects of an ADSC exosome sheet on intraoral wounds. This paves the way for future research and clinical applications of ADSC exosomes in mucosal wound healing.

Conclusions: Application of an ADSC-exo to rat mucosal wounds significantly improved wound healing. Mechanistically, these effects may be linked to upregulated activity of the TGF-β/Smad pathway.

Significance: Chronic wounds can lead to poor outcomes for patients, with risks, including amputation and death. In the United States, chronic wounds affect 2.5% of the population and cost up to $28 billion per year in primary health care costs. Recent Advances: Allograft tissues (dermal, amnion, and amnion/chorion) have shown efficacy in improving healing of chronic, recalcitrant wounds in human patients, as evidenced by multiple clinical trials. Their mechanisms of actions have been relatively understudied, until recently. Research in murine models has shown that dermal allografts promote reepithelialization, amnion allografts promote granulation tissue formation and angiogenesis, and amnion/chorion allografts support all stages of wound healing. These findings confirm their effectiveness and illuminate their therapeutic mechanisms. Critical Issues: Despite the promise of allografts in chronic wound care, a gap exists in understanding which allografts are most effective during each wound healing stage. The variable efficacy among each type of allograft suggests a mechanistic approach toward a proposed clinical treatment algorithm, based on wound characteristics and patient's needs, may be beneficial. Future Directions: Recent advances in allografts provide a framework for further investigations into patient-specific allograft selection. This requires additional research to identify which allografts support the best outcomes during each stage of wound healing and in which wound types. Longitudinal human studies investigating the long-term impacts of allografts, particularly in the remodeling phase, are also essential to developing a deeper understanding of their role in sustained wound repair and recovery.

Objective: Determine the validity and reliability of the LIMB-Q scales, Function, and Symptoms in patients with chronic lower extremity wounds. Approach: Cognitive debriefing interviews with people with current or previous wounds were conducted to examine content validity. Scales were field-tested in an international sample of people with chronic lower extremity wounds sourced from an online platform (i.e., Prolific). Psychometric properties were examined using the Rasch Measurement Theory analysis. A test-retest reproducibility study was performed, and construct validity was examined. Results: Content validity was established after 10 cognitive interviews. A total of 233 people with lower extremity wounds (age 19-80 years, mean 39.3) participated in the field test. All 25 items tested demonstrated good fit to the Rasch model with ordered thresholds. One item had a fit residual outside ±2.5, but no items had significant χ² values after Bonferroni adjustment. Reliability was high with the person separation index, Cronbach alpha, and intraclass correlation coefficient values >0.8. Strong correlations were found between the Function and Symptoms scales and EQ-5D dimensions measuring similar constructs as well as the EQ-5D global score. All hypotheses for construct validity were confirmed. Innovation: Patient-reported outcome measures are an important component of patient-centered care, as they capture the patient's perspective in a rigorous and reproducible way. Adding these two scales to the WOUND-Q provides a means to measure function and symptoms associated with lower extremity wounds. Conclusion: These new WOUND-Q scales can be used to measure outcomes important to patients with lower extremity wounds in clinical settings and research studies.