The potential role of Hypericum perforatum in wound healing: A literature review on the phytochemicals, pharmacological approaches, and mechanistic perspectives.

St. John's Wort, commonly known as Hypericum perforatum L., is a flowering plant in the Clusiaceae family that traditionally been employed for treating anxiety, depression, wounds, burns, sunburn, irritation, and stomach ailments. This review provides a synopsis of H. perforatum L. phytoconstituents and their biological effects, highlighting its beneficial therapeutic properties for dermatological indications, as well as its antioxidant, antimicrobial, anti-inflammatory, and anti-angiogenic activity in various applications including wound healing and skin conditions such as eczema, sun burn and minor burns also spastic paralysis, stiff neck and mood disorders as anti-depressant and nerve pains such as neuralgia. The data were collected from several databases as Web of Science PubMed, ScienceDirect, Scopus and Google Scholar using the terms: "H. perforatum L.", "H. perforatum L. /phytochemistry," and "H. perforatum extracts/wound healing" collected from 1994 to 2023. The findings suggest H. perforatum L. acts through various mechanisms and plays a role in each phase of the wound healing process, including re-epithelialization, angiogenesis, wound contraction, and connective tissue regeneration. H. perforatum L. enhances collagen deposition, decreases inflammation, inhibits fibroblast migration, and promotes epithelialization by increasing the number of fibroblasts with polygonal shape and the number of collagen fibers within fibroblasts. H. Perforatum L. extracts modulate the immune response and reduce inflammation were found to accelerate the wound healing process via inhibition of inflammatory mediators' production like interleukin-6, tumor necrosis factor-α, cyclooxygenase-2 gene expression, and inducible nitric oxide synthase. Thus, H. perforatum L. represents a potential remedy for a wide range of dermatological problems, owing to its constituents with beneficial therapeutic properties. H. perforatum L. could be utilized in the development of novel wound healing therapies.

Calcium Peroxide-Based Hydrogel Patch with Sustainable Oxygenation for Diabetic Wound Healing.

Nonhealing diabetic wounds are predominantly attributed to the inhibition of angiogenesis, re-epithelialization, and extracellular matrix (ECM) synthesis caused by hypoxia. Although oxygen therapy has demonstrated efficacy in promoting healing, its therapeutic impact remains suboptimal due to unsustainable oxygenation. Here, this work proposes an oxygen-releasing hydrogel patch embedded with polyethylene glycol-modified calcium peroxide microparticles, which sustainably releases oxygen for 7 days without requiring any supplementary conditions. The released oxygen effectively promotes cell migration and angiogenesis under hypoxic conditions as validated in vitro. The in vivo tests in diabetic mice models show that the sustainably released oxygen significantly facilitates the synthesis of ECM, induces angiogenesis, and decreases the expression of inflammatory cytokines, achieving a diabetic wound healing rate of 84.2% on day 7, outperforming the existing oxygen-releasing approaches. Moreover, the proposed hydrogel patch is designed with porous, soft, antibacterial, biodegradable, and storage stability for 15 days. The proposed hydrogel patch is expected to be promising in clinics treating diabetic wounds.

An integrative approach for management of post-traumatic dorsal foot wounds - A case report.

Crush injuries to the foot have become increasingly prevalent in contemporary settings, primarily arising from incidents such as the impact of large objects falling onto the foot or involvement in traffic accidents. The complexity of treating these injuries is compounded by the intricate anatomy of the foot. In specific scenarios, the implementation of an integrated management approach could prove advantageous. In this report, we depict the case of a 23-year-old male who visited the Shalya OPD with a wound on his left foot caused by trauma. The wound covered the medial portion of the foot, involving the dorsal area, and measured roughly 20 cm by 9 cm and was unable to walk. We successfully managed the case by adopting an integrative approach. The Ayurvedic treatment included Panchavalkala kashaya for wound irrigation, as well as oral administration of Amalaki rasayana, Triphala guggulu, Shatavari churna and Ashwagandha churna. Jatyadi taila was topically applied. For the first seven days, in addition to these ayurvedic medications, we also employed analgesics and antibiotics to treat infection and pain. To accomplish early closure, we employed a split-thickness skin graft after sufficient granulation tissue had appeared. The wound was completely healed within three months and the patient was able to walk freely without any support. The combined approach yielded a promising result in this case.

Burn Wounds and Enzymatic Debridement (ED)-Past, Present, and Future.

INTRODUCTION: Excision of necrotic and devitalized tissues of deep burns is key for optimal care of burn injuries. However, the modality of early tangential excision followed by skin grafting proposed by Zora Janzekovic 5 decades ago was not received initially with great enthusiasm. At present, it developed to become the standard of care (SOC) despite the special expertise it necessitates and the general anesthesia it requires in addition to several drawbacks including excessive blood loss, risk of hypothermia, and most importantly potential excision of normal non-burned tissues. Conservative non-surgical selective enzymatic debridement (ED) at present is becoming more popular as an adjunct or even an alternative approach. METHODS: A systematic review of the PubMed electronic database was conducted to identify all experimental and clinical studies about ED of burn wounds. Additional separate searches were also conducted to identify any reports missed by the initial systematic review. Full texts of 59 reports (42 clinical and 17 experimental studies) were retrieved for analysis. RESULTS: A total of 46 studies (11 experimental and 35 clinical) were about the pineapple extract debriding agent. In total, 23 clinical studies describing promising favorable results with pineapple bromelain-based debridement (BBD) concentrate were published in the last 3 years (2020-2023). CONCLUSION: Though available evidence is not entirely in favor of replacing the current surgical SOC with BBD, it certainly presents ED as a highly advantageous modality for the management of burn wounds. Newly described keratinase and SN514 also are promising new products. They both still await further investigation before being clinically adopted.

Copper selenide nanosheets with photothermal therapy-related properties and multienzyme activity for highly effective eradication of drug resistance.

Bacterial infections are among the most significant causes of death in humans. Chronic misuse or uncontrolled use of antibiotics promotes the emergence of multidrug-resistant superbugs that threaten public health through the food chain and cause environmental pollution. Based on the above considerations, copper selenide nanosheets (CuSe NSs) with photothermal therapy (PTT)- and photodynamic therapy (PDT)-related properties have been fabricated. These CuSe NSs possess enhanced PDT-related properties and can convert O2 into highly toxic reactive oxygen species (ROS), which can cause significant oxidative stress and damage to bacteria. In addition, CuSe NSs can efficiently consume glutathione (GSH) at bacterial infection sites, thus further enhancing their sterilization efficacy. In vitro antibacterial experiments with near-infrared (NIR) irradiation have shown that CuSe NSs have excellent photothermal bactericidal properties. These experiments also showed that CuSe NSs exerted excellent bactericidal effects on wounds infected with methicillin-resistant Staphylococcus aureus (MRSA) and significantly promoted the healing of infected wounds. Because of their superior biological safety, CuSe NSs are novel copper-based antimicrobial agents that are expected to enter clinical trials, serving as a modern approach to the major problem of treating bacterially infected wounds.

Antibacterial and Anti-Inflammatory Polysaccharide from Fructus Ligustri Lucidi Incorporated in PVA/Pectin Hydrogels Accelerate Wound Healing.

In cutaneous wound healing, an overproduction of inflammatory chemokines and bacterial infections impedes the process. Hydrogels can maintain a physiologically moist microenvironment, absorb chemokines, prevent bacterial infection, inhibit bacterial reproduction, and facilitate wound healing at a wound site. The development of hydrogels provides a novel treatment strategy for the entire wound repair process. Here, a series of Fructus Ligustri Lucidi polysaccharide extracts loaded with polyvinyl alcohol (PVA) and pectin hydrogels were successfully fabricated through the freeze-thaw method. A hydrogel containing a 1% mixing weight ratio of FLL-E (named PVA-P-FLL-E1) demonstrated excellent physicochemical properties such as swellability, water retention, degradability, porosity, 00drug release, transparency, and adhesive strength. Notably, this hydrogel exhibited minimal cytotoxicity. Moreover, the crosslinked hydrogel, PVA-P-FLL-E1, displayed multifunctional attributes, including significant antibacterial properties, earlier re-epithelialization, production of few inflammatory cells, the formation of collagen fibers, deposition of collagen I, and faster remodeling of the ECM. Consequently, the PVA-P-FLL-E1 hydrogel stands out as a promising wound dressing due to its superior formulation and enhanced healing effects in wound care.

Green Synthesis of Zinc Oxide Nanoparticles from Althaea officinalis Flower Extract Coated with Chitosan for Potential Healing Effects on Diabetic Wounds by Inhibiting TNF-α and IL-6/IL-1ß Signaling Pathways.

Background: Diabetes Mellitus is a multisystem chronic pandemic, wound inflammation, and healing are still major issues for diabetic patients who may suffer from ulcers, gangrene, and other wounds from uncontrolled chronic hyperglycemia. Marshmallows or Althaea officinalis (A.O.) contain bioactive compounds such as flavonoids and phenolics that support wound healing via antioxidant, anti-inflammatory, and antibacterial properties. Our study aimed to develop a combination of eco-friendly formulations of green synthesis of ZnO-NPs by Althaea officinalis extract and further incorporate them into 2% chitosan (CS) gel. Method and Results: First, develop eco-friendly green Zinc Oxide Nanoparticles (ZnO-NPs) and incorporate them into a 2% chitosan (CS) gel. In-vitro study performed by UV-visible spectrum analysis showed a sharp peak at 390 nm, and Energy-dispersive X-ray (EDX) spectrometry showed a peak of zinc and oxygen. Besides, Fourier transforms infrared (FTIR) was used to qualitatively validate biosynthesized ZnO-NPs, and transmission electron microscope (TEM) showed spherical nanoparticles with mean sizes of 76 nm and Zeta potential +30mV. The antibacterial potential of A.O.-ZnO-NPs-Cs was examined by the diffusion agar method against Gram-positive (Staphylococcus aureus and Bacillus subtilis) and Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa). Based on the zone of inhibition and minimal inhibitory indices (MIC). In addition, an in-silico study investigated the binding affinity of A.O. major components to the expected biological targets that may aid wound healing. Althaea Officinalis, A.O-ZnO-NPs group showed reduced downregulation of IL-6, IL-1ß, and TNF-α and increased IL-10 levels compared to the control group signaling pathway expression levels confirming the improved anti-inflammatory effect of the self-assembly method. In-vivo study and histopathological analysis revealed the superiority of the nanoparticles in reducing signs of inflammation and wound incision in rat models. Conclusion: These biocompatible green zinc oxide nanoparticles, by using Althaea Officinalis chitosan gel ensure an excellent new therapeutic approach for quickening diabetic wound healing.

Revolutionizing Wound Healing: Unleashing Nanostructured Lipid Carriers Embodied with Herbal Medicinal Plant.

Wound healing is crucial for maintaining skin integrity and preventing complications from external threats. Various plants, such as Achillea millefolium, Aloe vera, Curcuma longa, Calendula officinalis, Camellia sinensis, Azadirachta indica, and Plantago, have demonstrated wound healing capabilities and have been used in herbal medicine for wound care. NLCs are second-generation lipid nanoparticles, blending solid and liquid lipids to improve medication loading and limit leakage. NLCs have been used in various applications, including cosmeceuticals, chemotherapy, gene therapy, and brain targeting. Wound healing is divided into four stages: hemostasis, inflammatory response, proliferation, and remodeling. Factors such as age, gender, chronic disorders, and local agents like infections can affect recovery. These plants' antiinflammatory, antioxidant, and antibacterial activities have demonstrated potential in wound healing. Combining herbal medicinal plants and nanostructured lipid carriers (NLCs) can revolutionise wound treatment and improve overall healthcare outcomes.

Diabetes in spotlight: current knowledge and perspectives of photobiomodulation utilization.

Introduction: Diabetes is a global health concern characterized by chronic hyperglycemia resulting from insulinopenia and/or insulin resistance. The rising prevalence of diabetes and its associated complications (ulcers, periodontitis, healing of bone defect, neuropathy, retinopathy, cardiopathy and nephropathy) necessitate innovative therapeutic approaches. Photobiomodulation (PBM), involves exposing tissues and cells to low-energy light radiation, leading to biological effects, largely via mitochondrial activation. Methods: This review evaluates preclinical and clinical studies exploring the potential of PBM in diabetes and its complications, as well all clinical trials, both planned and completed, available on ClinicalTrials database. Results: This review highlights the variability in PBM parameters across studies, hindering consensus on optimal protocols. Standardization of treatment parameters and rigorous clinical trials are needed to unlock PBM's full therapeutic potential. 87 clinical trials were identified that investigated PBM in diabetes mellitus (with 5,837 patients planned to be treated with PBM). Clinical trials assessing PBM effects on diabetic neuropathy revealed pain reduction and potential quality of life improvement. Studies focusing on wound healing indicated encouraging results, with PBM enhancing angiogenesis, fibroblast proliferation, and collagen density. PBM's impact on diabetic retinopathy remains inconclusive however, requiring further investigation. In glycemic control, PBM exhibits positive effects on metabolic parameters, including glucose tolerance and insulin resistance. Conclusion: Clinical studies have reported PBM-induced reductions in fasting and postprandial glycemia without an increased hypoglycemic risk. This impact of PBM may be related to its effects on the beta cells and islets in the pancreas. Notwithstanding challenges, PBM emerges as a promising adjunctive therapy for managing diabetic neuropathy, wound healing, and glycemic control. Further investigation into its impact on diabetic retinopathy and muscle recovery is warranted.

To Evaluate the Effect of Vitamin B Complex on Wound Healing - A Clinical and Microbiological Study.

Background: The purpose of this study is to explore the effect of vitamin B complex supplementation following periodontal flap surgery on clinical and microbiological parameters. Materials and Methods: A randomized controlled trial on 10 patients with periodontitis in split-mouth design was undertaken to find the effect of vitamin B complex supplementation with open flap debridement on periodontal wound healing. Multiplex polymerase chain reaction (PCR) for Tannerella forsythus and Porphyromonas gingivalis was done using subgingival plaque samples at 0 and 90th day. Results: The results showed a significant reduction (P < 0.01) of clinical (plaque index, gingival index, gingival bleeding index, probing pocket depth, and relative attachment level) and microbial profile in both treatment groups, whereas on intergroup analysis, more reduction in all clinical parameters were observed in the test group, but statistically, the results were insignificant.

Use of biosurgery for the treatment of foot ulcers infected with therapy-resistant bacteria: a case report.

Biosurgery (larval therapy) has been used for centuries. However, in recent times, this treatment has been replaced with the use of antibiotics for the treatment of wounds. Due to increasing antibiotic resistance, larval therapy is once again coming to the fore as an effective and efficient treatment. Due to the increasing ageing population, along with an increase in patients with arterial occlusive disease, diabetes and immobility, the number of patients with hard-to-heal wounds will increase. The stressors associated with wounds, such as pain, limited physical functionality, depression and social withdrawal, have a negative impact on patient quality of life. This case report documents the performance of biosurgery in a patient with multimorbidities.

Development and characterization of a topical gel, containing lavender (Lavandula angustifolia) oil loaded solid lipid nanoparticles.

Gels loaded with nanocarriers offer interesting ways to create novel therapeutic approaches by fusing the benefits of gel and nanotechnology. Clinical studies indicate that lavender oil (Lav-O) has a positive impact on accelerating wound healing properly based on its antimicrobial and anti-inflammatory effects. Initially Lav-O loaded Solid Lipid Nanoparticles (Lav-SLN) were prepared incorporating cholesterol and lecithin natural lipids and prepared SLNs were characterized. Next, a 3% SLN containing topical gel (Lav-SLN-G) was formulated using Carbopol 940. Both Lav-SLN and Lav-SLN-G were assessed in terms antibacterial effects against S. aureus. Lav-SLNs revealed a particle size of 19.24 nm, zeta potential of -21.6 mv and EE% of 75.46%. Formulated topical gel presented an acceptable pH and texture properties. Minimum Inhibitory/Bactericidal Concentration (MIC/MBC) against S. aureus for LAv-O, Lav-SLN and Lav-SLN-G were 0.12 and 0.24 mgml- 1, 0.05 and 0.19 mgml- 1 and 0.045, 0.09 mgml- 1, respectively. Therefore, SLN can be considered as an antimicrobial potentiating nano-carrier for delivery of Lav-O as an antimicrobial and anti-inflammatory agent in topical gel.

A guide to removing surgical staples.

This article provides a comprehensive overview of the wound healing process, emphasising the critical role of surgical staples in primary intention healing. It outlines the four distinct phases of wound healing including haemostasis, inflammation, proliferation, and maturation - and discusses the mechanisms by which surgical staples enhance this natural biological process. Special focus is given to the aseptic non-touch technique (ANTT), which is crucial in preventing infections during the staple removal procedure. The article further explores the procedural steps involved in the removal of surgical staples and highlights the holistic aspects of patient care that need to be considered. This includes strategies for effective pain management, ensuring informed consent, and maintaining a sterile environment. By integrating clinical skills with a thorough understanding of wound care, this article aims to improve nursing practices in surgical settings, promoting better patient outcomes and recovery.

Photobiomodulation Can Prevent Medication-Related Osteonecrosis of the Jaw Formation in Tooth Extraction Site of Rat Model.

Objective: This study aims to explore the preventive potential of photobiomodulation (PBM) in bisphosphonate-related osteonecrosis of the jaw (BRONJ) using a rat model. Methods: An experimental rat model was established, exposing rats to zoledronic acid (ZA), a primary risk factor for BRONJ. An 810 nm diode laser was applied with parameters of 0.33 W/cm2 power density and 10 J/cm2 energy density for 30 sec. PBM was initiated 1 day pre-extraction and continued for 2 weeks. The impact of PBM on wound healing in both soft and hard tissues was evaluated post tooth extraction. Results: ZA exposure hindered wound healing in both soft and hard tissues after tooth extraction. PBM intervention effectively mitigated the adverse effects of ZA, promoting healing processes in both tissue types. This suggests the potential of PBM as a preventive strategy for BRONJ in patients on long-term bisphosphonate treatment. Moreover, PBM exhibited enhanced wound healing in normal rats, indicating its broader applicability beyond BRONJ cases. Conclusions: PBM shows promise in preventing and improving wound healing in BRONJ and normal cases. These findings underscore the significance of optimizing PBM parameters and suggest its potential clinical relevance as a preventive intervention for BRONJ and a promoter of wound healing.

Wound care in older people: overcoming the challenges of assessment and management.

Age-related skin changes lead to increased susceptibility to skin damage and delayed wound healing, which is exacerbated by comorbidities such as cardiovascular disease and diabetes mellitus. In some cases, wound healing is not achievable or realistic and this needs to be reflected in the wound management plan. To improve outcomes and experience in older people presenting with wounds it is important to select wound management products that protect the wound bed and surrounding skin, minimise trauma, reduce symptoms and/or promote healing. This article explores how conducting holistic wound assessments, setting realistic treatment aims, and using wound management strategies tailored to each person's needs and wishes can have a positive effect on older people's quality of life.

M.O.I.S.T. Concept for the Local Therapy of Chronic Wounds: An International Update.

Chronic wounds remain a significant clinical challenge both for those affected and for healthcare systems. The treatment is often comprised and complex. All patients should receive wound care that is integrated into a holistic approach involving local management that addresses the underlying etiology and provides for gold standard therapy to support healing, avoid complications and be more cost effective. There have been significant advances in medicine over the last few decades. The development of new technologies and therapeutics for the local treatment of wounds is also constantly increasing. To help standardize clinical practice with regard to the multitude of wound products, the M.O.I.S.T. concept was developed by a multidisciplinary expert group. The M stands for moisture balance, O for oxygen balance, I for infection control, S for supporting strategies, and T for tissue management. Since the M.O.I.S.T. concept, which originated in the German-speaking countries, is now intended to provide healthcare professionals with an adapted instrument to be used in clinical practice, and a recent update to the concept has been undertaken by a group of interdisciplinary experts to align it with international standards. The M.O.I.S.T. concept can now be used internationally both as an educational tool and for the practical implementation of modern local treatment concepts for patients with chronic wounds and can also be used in routine clinical practice.

Evidências clínicas do uso de plantas medicinais e fitoterápicos na cicatrização de feridas cutâneas: uma revisão integrativa / Evidencia clínica sobre el uso de plantas medicinales y medicinas a base de hierbas en la curación de heridas en la piel: una revisión integrativa / Clinical evidence on the use of medicinal plants and herbal medicine in healing skin wounds: an integrative review

Introdução: Plantas medicinais e fitoterápicos são tradicionalmente utilizados na cicatrização de diversos tipos de feridas. Muitas plantas contêm compostos bioativos com propriedades anti-inflamatórias, antimicrobianas e cicatrizantes. Objetivo: Reunir evidências clínicas do uso de plantas medicinais e fitoterápicos na cicatrização de feridas cutâneas. Metodologia: Trata-se de uma revisão integrativa da literatura. Os estudos foram coletados das bases de dados MEDLINE/PubMed e LILACS, utilizando como estratégia de busca os termos ((WoundHealing) ou (Inflammation)) e ((MedicinalPlants) ou (Phytotherapy)) com recorte temporal de 2011 a 2021. Resultados: 15 estudos foram incluídos na revisão. A maioria dos estudos foram do tipo ensaio clínico controlado randomizado. Foi investigada a eficácia de 15 espécies medicinais para o tratamento de feridas agudas e crônicas, sendo as mais recorrentes queimaduras de segundo grau, úlceras crônicas e feridas cirúrgicas. As espécies medicinais que apresentaram melhores resultados foram babosa (Aloevera), centela (Centellaasiatica),beldroega (Portulacaoleraceae), Arnebia euchroma, hipérico (Hypericum perforatum) emil-folhas (Achilleamillefolium), melhorando critérios como eritema, edema, tempodere-epitelização, tempo de cicatrização e a aparência geral da ferida. Conclusões: Plantas medicinais e fitoterápicos apresentam eficácia no processo de cicatrização, sendo, portanto, alternativa terapêutica para o tratamento de feridas cutâneas (AU).

Introduction: Medicinal plants and herbal medicines are traditionally used to heal various types of wounds. Many plants contain bioactive compounds with anti-inflammatory, antimicrobial, and wound-healing properties. Objective: Gathering clinical evidence on the use of medicinal plants and herbal medicine in the healing of skin wounds. Methodology:Thisisan integrative review of the literature. The studies were collected from the MEDLINE/PubMed and LILACS data bases, using the terms ((WoundHealing) or (Inflammation)) and ((MedicinalPlants) or (Phytotherapy)) as a search strategy, from 2011 to 2021. Results: Fifteen studies were included in the review. Most of them were of the randomized controlled clinical trial type. The effectiveness of 15 medicinal species was investigated for the treatment of acute and chronic wounds, the most common of which were second-degree burns, chronic ulcers,and surgical wounds. The species with the best results were Aloe vera, Centella asiatica, Portulaca oleraceae, Arnebia euchroma, Hypericum perforatum, and Achillea millefolium, improving criteria such as erythema, edema, re-epithelialization time, healing time, and the general appearance of the wound. Conclusions: Medicinalplants and herbal medicine are effective in the healing process, therefore being a therapeutic alternative for treating skin wounds (AU).

Introducción: Las plantas medicinales y las medicinas a base de hierbas se utilizan tradicionalmente para curar diversos tipos de heridas. Muchas plantas contienen compuestos bioactivos con propiedades antiinflamatorias, antimicrobianas y cicatrizantes. Objetivo: Recopilar evidencia clínica sobre el uso de plantas medicinales y medicinas a base de hierbas en la curación de heridas cutáneas. Metodología: Se trata de una revisión integradora de la literatura. Los estudios fueron obtenidos de las bases de datos MEDLINE/PubMed y LILACS, utilizando como estrategia de búsqueda los términos ((WoundHealing) o (Inflammation)) y ((MedicinalPlants) o (Phytotherapy)) con un marco temporal de 2011 a 2021. Resultados: Se incluyeron 15 estudios en la revisión. La mayoría de los estudios fueron del tipo ensayo clínico controlado aleatorio. Se investigó la eficacia de 15 especies medicinales para el tratamiento de heridas agudas y crónicas, las más comunes fueron quemaduras de segundo grado, úlceras crónicas y heridas quirúrgicas. Las especies medicinales con mejoresr esultados fueron Aloe vera, Centella asiatica, Portulaca oleraceae, Arnebia euchroma, Hypericum perforatum y Achillea millefolium, mejorando criterios como eritema, edema, tiempo de reepitelización, tiempo de cicatrización y aspecto general de la herida. Conclusiones: Plantas medicinales y medicinas a base de hierbas son efectivas en el proceso de cicatrización, siendo portanto un aalternativa terapéutica para el tratamiento de heridas en la piel (AU).

Traditional Chinese medicine Qingre Huoxue decoction enhances wound healing in through modulation of angiogenic and inflammatory pathways.

This study investigates the therapeutic potential of Qingre Huoxue Decoction (QHD), a traditional Chinese herbal formulation, in promoting wound healing in an imiquimod-induced murine model of psoriasis. The research was driven by the need for effective wound healing strategies in psoriatic conditions, where conventional treatments often fall short. Employing a combination of in vivo and in vitro methodologies, we assessed the effects of QHD on key factors associated with wound healing. Our results showed that QHD treatment significantly reduced the expression of angiogenic proteins HIF-1α, FLT-1, and VEGF, and mitigated inflammatory responses, as evidenced by the decreased levels of pro-inflammatory cytokines and increased expression of IL-10. Furthermore, QHD enhanced the expression of genes essential for wound repair. In vitro assays with HUVECs corroborated the anti-angiogenic effects of QHD. Conclusively, the study highlights QHD's efficacy in enhancing wound healing in psoriatic conditions by modulating angiogenic and inflammatory pathways, presenting a novel therapeutic avenue in psoriasis wound management.

Effects of Photobiomodulation Therapy on the Expression of Hypoxic Inducible Factor, Vascular Endothelial Growth Factor, and Its Specific Receptor: A Randomized Control Trial in Patients with Diabetic Foot Ulcer.

Background: Impaired angiogenesis is a significant factor contributing to delayed healing in diabetic foot ulcers (DFUs) due to inadequate oxygenation. Objective: This study aimed to investigate the impact of photobiomodulation (PBM) using a Ga-As laser on the release of serum hypoxia-inducible factor 1-α (HIF-1α), vascular endothelial growth factor (VEGF), vascular endothelial growth factor receptor-2, and nitric oxide (NO) in diabetic patients with DFUs. Materials and methods: In this double-blind RCT, a total of 30 patients with grade II DFUs were enrolled. The patients were randomly divided into two groups: the PBM (n = 15) and the placebo (n = 15). In the PBM group, a Ga-As laser (904 nm, 2 J/cm2, 90 W) was given for 3 days/week for 4 weeks (11 sessions). In the placebo group, the power was turned off. Both groups received similar standard wound care. Before and after interventions, the levels of serum HIF-1α, VEGF, NO, and sVEGFR-2 were measured. In addition, the percentage decrease in the wound surface area (%DWSA) was measured. Results: Following the intervention, the results revealed that the PBM group had significantly lower levels of VEGF than the placebo group (p = 0.005). The %DWSA was significantly higher in the PBM group compared to the placebo group (p = 0.003). Moreover, VEGF showed a significant negative correlation with %DWSA (p < 0.001). Conclusions: The observed decrease in serum levels of VEGF and an increase in %DWSA, compared to the placebo group, suggests that PBM effectively improves angiogenesis. Furthermore, the significant correlation found between VEGF levels and %DWSA emphasizes the importance of evaluating wound surface in patients as a dependable indicator of enhanced wound angiogenesis. Clinical Trial Registration: NCT02452086.

Triboelectric-Responsive Drug Delivery Hydrogel for Accelerating Infected Wound Healing.

Electrotherapy is of great interest in the field of tissue repair as an effective, well-tolerated, and noninvasive treatment. Triboelectric nanogenerator (TENG) has shown advantages in promoting wound healing due to its peak output characteristic and low Joule heating effect. However, it is limited in infected wound healing due to poor antimicrobial capacity. Here, a wearable triboelectric stimulator (WTS) is developed that consists of a flexible TENG (F-TENG) and a triboelectric-responsive drug delivery hydrogel (TR-DDH) for healing of bacterium-infected wounds. F-TENG can generate pulsed current to wounds by converting mechanical energy from body movements. Polypyrrole is prone to reduction and volume contraction under electrical stimulation, resulting in desorption of curcumin nanoparticles (CUR NPs) from the polypyrrole in TR-DDH. Therefore, the highly efficient and controllable release of CUR NPs can be achieved by triboelectric stimulation. According to the in vitro and in vivo experiments, WTS has the greatest antimicrobial effect and the fastest promotion of infected wound healing compared to treatment with electrical stimulation or curcumin. Finally, the safety assessment demonstrates that the WTS has excellent tissue safety for chronic wound healing. Synergistic therapy with WTS provides an efficient strategy for chronic wound healing and smart-responsive drug delivery systems.