Good Wound Healing Research Articles

Wound healing potential of mouth gel containing isopimarane diterpene from Kaempferia galanga rhizomes for treatment of oral stomatitis

Background Oral ulcers have an impact on 25% of the global population including patients who are suffering from chemotherapy and radiotherapy treatments. Kaempferia galanga L. has been traditionally used for treatment of mouth sores and tongue blisters. However, the wound healing study of isopimarane diterpenes isolated from K. galanga is still limited. Objective This study aims to evaluate the wound healing potential of 6β-acetoxysandaracopimaradiene-1α,9α-diol (KG6), a compound isolated from Kaempferia galanga, by examining its biological activities. Additionally, we investigate the physicochemical and biological properties of (KG6) in formulated mouth gels. Methods The KG6 mouth gels at 0.10%, 0.25% and 0.50% w/w were formulated using sodium carboxymethylcellulose as a gelling agent, and their physicochemical and biological stabilities were assessed through a heating-cooling acceleration test. The quantification of KG6 contents in KG6 mouth gels was determined using gas chromatography. Both KG6 and KG6 mouth gels were evaluated for their wound healing properties including cell proliferation, cell migration, and antioxidant activity (H2O2-induced oxidative stress) in human gingival fibroblast (HGF-1-ATCC CRL-2014) (HGF-1). In addition, the anti-inflammatory activity against nitric oxide (NO) production was investigated in macrophage cells (RAW 264.7). Results After KG6 mouth gels were incubated under heating-cooling acceleration condition, the physicochemical properties of the KG6 mouth gels remain stable across various parameters, including appearance, color, smell, texture, pH, viscosity, separation, and KG6 content. The biological studies indicated that the KG6 compound possessed good wound healing potential. The 0.50% KG6 mouth gel exhibited marked anti-inflammatory effect by inhibiting NO production with an IC50 of 557.7 µg/ml, comparable to that of Khaolaor mouth gel, a positive control. The 0.25% KG6 mouth gel increased HGF-1 cell proliferation to 101.7–103.5%, whereas all formulations of KG6 mouth gel enhanced HGF-1 cell migration to 94.7–98.9%, higher than Khaolaor mouth gel (73.5%). Moreover, 0.50% KG6 mouth gel also showed a good antioxidant effect under H2O2-induced oxidative stress. Conclusion This study substantiates the significant biological activities related to the wound healing property of 0.50% KG6 mouth gel for treatment of aphthous ulcers and oral stomatitis from chemotherapy and radiotherapy treatments.

Guar gum and gelatin-based hydrogel wound dressing loaded calcium-containing nanoparticles: Simpler preparation, faster hemostasis and faster pro-wound healing properties

In this work, we prepared a novel calcium-containing nanoparticles (CaNPs) and added it to a hydrogel composed of guar gum (GG) and gelatin (Gel) as a backbone to prepare a novel hydrogel (GG@Gel-Ca) with rapid hemostasis, antibacterial effect and wound healing promotion. We conducted a series of test to characterize the structure and properties of CaNPs and GG@Gel-Ca hydrogel. The results showed that CaNPs had been successfully prepared and had regular morphology, and the GG@Gel-Ca hydrogel had good swelling ability, good antibacterial ability and excellent hemocompatibility/hemostasis and perfect cytocompatibility. Animal experiments also showed that GG@Gel-Ca hydrogel was able to achieve rapid hemostasis in the rat liver hemostasis model and it could also accelerate wound healing in S. aureus infections. In summary, we developed an innovative and practical method to prepare a gentle hydrogel, employing two natural polysaccharides that remained unmodified and untreated with chemicals. By incorporating the prepared calcium nanoparticles into this hydrogel, we successfully achieved effective hemostasis. Therefore, the GG@Gel-Ca hydrogel has the potential for application as hemostatic wound dressings with antibacterial properties and good wound healing.

What Outcomes Matter Most to Paediatric Burn Patients and Their Caregivers: A Comparison of Short-Term and Long-Term Priorities

Identifying outcomes that matter most is key in driving specialized paediatric burn care. The aim of this study was to discover the most important outcomes for paediatric burns. Parents of children (0–3 year and 4–11 years old) and adolescents (12–17 yearss old) completed surveys to identify outcomes that matter most in the short-term (<6 months postburn) and long-term (6–24 months postburn). The percentage of patients scoring an outcome as ‘very important’ was used to rank the outcomes. Fifty-four parents/adolescents participated (response rate: 27%). Children had a median TBSA burned of 5.0% (IQR: 2.0–7.0%). In the short-term, ‘good wound healing’ and ‘no wound infection’ (both at 71.4–100%) were very important for all children. ‘Not having pain’ (90.3–93.8%) was ranked highest for children ≤11 years old, whereas ‘walking or moving around’ (85.7%) was most important for older children. In the long-term, more variation was seen in outcome priorities; however, both ‘not having pain’ (53.6–85.7%) and ‘flexibility of scar(s)’ (60.7–71.4%) were considered very important by all three groups. Patient- and parent-derived priorities are important for developing consumer-centric, highest-value care pathways. The priority of the outcomes identified is a starting point to discuss treatment options and recovery priorities in a family-centric approach to guide high-value, individualized care.

Healing with Systematic Wound Management after Minimally Invasive Treatment of Axillary Osmidrosis.

Axillary osmidrosis (AO), the condition of armpit smell, can be treated with minimally invasive techniques. However, patients may experience wound complications and a relatively long recovery period after operation. In this case series, the researchers investigated the effectiveness of systematic wound management for wound healing after minimally invasive treatment of AO.From January 2016 to December 2021, 64 patients with AO underwent systematic wound management after minimally invasive treatment. Systematic wound management included three consecutive steps of wound irrigation with 0.9% sodium chloride, suction drainage, and compression dressing. The researchers retrospectively evaluated wound healing results and recorded complications. Of the patients, 60 (93.8%) had good primary wound healing results, 1 (1.5%) developed a hematoma, and 3 (4.7%) had partial epidermis necrosis. The hematoma was easily evacuated, and the partial epidermis necrosis recovered spontaneously without obvious scarring. No other adverse effects were observed.The results of this case series indicate that systematic wound management is reliable and practical and provides good wound healing results after minimally invasive treatment of AO.

Hydrogel microspheres encapsulating lysozyme/MXene for photothermally enhanced antibacterial activity and infected wound healing

The high mortality and enormous economic burden of bacterially infected wounds remains a huge challenge for human health. The development of ideal wound dressings with desirable antibacterial and good wound healing properties still remains a major problem affecting the regeneration of bacterially infected wound tissue. Herein, we present novel alginate-based hydrogel microspheres containing lysozyme and MXene (i-Lyso@Alg), in which the positively charged lysozyme is immobilized on the negatively charged MXene by electrostatic interaction. Due to the presence of MXene, i-Lyso@Alg exhibits good thermal effect, drug release behavior and strong antibacterial activity under near-infrared (NIR) irradiation. The synthesized i-Lyso@Alg can realize not only improvement of lysozyme stability but also photothermal responsive up-regulation for biocatalysis of lysozyme. The excellent antibacterial activities of i-Lyso@Alg were attributed to the photothermally enhanced lysozyme activity, assisted by bacterial death caused by local thermal effect of photothermally activated MXene and the physical damage due to the MXene. In addition, in the infected skin wounds of rats, i-Lyso@Alg + NIR significantly accelerates the wound healing process by inhibiting the expression of inflammatory factors and bacterial (Staphylococcus aureus) infection, and inducing the expression of pro-angiogenic factors and tissue remodeling. Overall, the results of this study introduce a pioneering approach by integrating the unique photothermal properties of MXene with the enzymatic action of lysozyme within an alginate-based hydrogel microsphere. This synergistic system not only advances the frontier of antibacterial wound dressings but also represents a significant step towards effective management of infected wounds, which possesses great potential in clinical treatment of infected wounds.

Application of Submandibular Gland Flap in the Repair of Postoperative Defects in Clinical Stage III Osteoradionecrosis of the Jaw.

Investigating the clinical efficacy of submandibular gland flap repair for postoperative defects in clinical stage III osteoradionecrosis of the jaw was the objective of this study. The study included 3 patients who declined vascularized fibula flap repair for mandibular defects and 1 patient who was not fit for mandibular reconstruction due to poor systemic condition. The postoperative defects were successfully repaired using a submandibular gland flap, and the clinical outcomes were monitored. After a 6 to 8 month postoperative follow-up, all patients exhibited good wound healing, no signs of infection, no pain, and normal submandibular gland function. The study demonstrated that submandibular gland flap repair is an effective and feasible approach for addressing postoperative defects in clinical stage III osteoradionecrosis of the jaw, yielding satisfactory clinical results.

Local Delivery of Irinotecan to Recurrent GBM Patients at Reoperation Offers a Safe Route of Administration.

Glioblastomas are impossible to completely resect and almost always recur at the borders of the resection margin. There is no established chemotherapy regimen available to patients who recur, while systemic treatment is hampered by the blood-brain barrier. Here, we report on the first evaluation in humans of the intraparenchymal injection of irinotecan into the resection cavity after surgical resection of recurrent glioblastoma patients. The cytotoxicity of irinotecan was compared to SN-38 in primary cells from recurrent glioblastoma patients. Irinotecan was injected at multiple (~30) sites of the resection cavity wall at a depth of 3 to 5 mm. SN-38 was more cytotoxic than irinotecan at concentrations below 1 µM due to enzyme kinetics. The intraparenchymal administration of irinotecan was safe, with good wound healing and an absence of swelling, inflammation, or pseudo-abscess formation. The median survival post irinotecan administration was 32.6 weeks. The median overall survival was 30.5 months, with a two-year survival rate of 56%. This study demonstrates that local delivery of irinotecan into the brain parenchyma offers a safe route of administration over systemic delivery in the treatment of recurrent glioblastoma.

Caregivers and Clinic Providers View Soft Casts for Pediatric Hand Burns as Acceptable and Feasible: A Mixed Methods Survey.

Soft casts have been introduced as an efficacious strategy to manage hand burns that simplifies wound care for families. We hypothesized that the outpatient use of soft casts in pediatric hand burns would be viewed as acceptable by patient caregivers and providers, logistically feasible, and result in satisfactory clinical outcomes. A review was performed of pediatric clinic patients managed with soft casts since implementation (9/2022-9/2023). Patient caregivers and providers were surveyed. The primary outcome was the acceptability of soft casts as a management strategy (questions targeted care burden, overall satisfaction, comfort, pragmatism, and healing concerns). The secondary outcome was feasibility (effect on clinic workflow, and efficiency). Survey responses were collected from 70% of caregivers and 95% of providers. Responses overwhelmingly favored soft cast acceptability. Among providers, 84% agreed that "the soft cast method simplified the hand burn care experience in our clinic" and 100% indicated "the soft cast was easy for parents to manage at home" (Likert range 7-10, mode 10). Thirty-three English-speaking patients with partial and full-thickness hand burns were managed with soft casts. A mean of 1.8 reapplications (mode 1, range 1-5) was required with a median healing time of 13 days. No infections were attributed to the use of soft casting, and only 1 patient ultimately required grafting. Overall, the introduction of soft casts as a management strategy for pediatric hand burns was acceptable and feasible. The clinical outcomes assessed suggest soft casts are associated with good wound healing with minimal wound care responsibilities for patients and families.

Screening of Short-Chain Antimicrobial Peptide LKARI with Broad-Spectrum Bactericidal Properties and Its Application in Promoting Wound Healing.

Due to the extensive use of antibiotics, many highly resistant bacteria and extensively resistant bacteria have been produced. In recent years, the increase of drug-resistant bacteria and the resulting proliferation of drug-resistant bacteria have increased the incidence of hospital-acquired infections and caused great harm to human health. Antimicrobial peptides (AMPs) are considered to be an innovative antibiotic and belong to the latest advances in this field. We designed a polypeptide and verified its low minimum inhibitory concentration and broad-spectrum activity against Gram-positive bacteria, Gram-negative bacteria, and fungi in microbiology and pharmacology. Several experiments have confirmed that the screened antimicrobial peptides have significant antidrug resistance and also show significant therapeutic properties in the treatment of systemic bacterial infections. In addition, through our experimental research, it was proved that the antibacterial hydrogel composed of poly(vinyl alcohol), sodium alginate, and antimicrobial peptides had excellent antibacterial properties and showed good wound healing ability.

Formulation and Evaluation of Antibacterial Cream from Mimosa Pudica and Tridax Procumbenz)

The study was carried out to identify through scientific methods the active ingredients and the pharmacological activities of the shoot and root extracts of Mimosa pudica Linn. The Mimosa pudica shoot methanolic extract (MSME),Mimosa pudica root methanolic extract (MRME) showed very good wound healing activity when compared to the standard drug Gentamicin. Tridax procumbens L. (Compositae) is a common weed that grows in the rice fields of India. Traditionally the juice from leaves of Tridax procumbens has been used for healing dermal wound. However, in experimental studies, equivocal pro and anti-healing action of T. Procumbens has been demonstrated. It has been studied previously that stage of wound healing involves acute inflammatory phase followed by the synthesis of collagen and other extra cellular macromolecules, which is later removed to form a scar

Extraction Socket Seal Technique for Socket Preservation after Tooth Extraction: An Innovative Approach.

Background and objectives: Tooth extraction triggers the loss of surrounding alveolar soft tissue and bone. Numerous socket preservation techniques have been used by clinical surgeons; the issue with all existing techniques is the loss of soft tissue anatomy, resulting in a flat soft tissue architecture. Our study introduces an innovative ridge preservation technique that addresses this problem; it involved using an anatomically shaped composite resin lid that acts as a graft sealant and an approach for maintaining the soft tissue cervical profile. Material and Methods: The Extraction Socket Seal (ESS) technique was applied for 23 patients for socket preservation; atraumatic extraction of hopeless tooth was performed. The extraction socket was filled up with bone grafting material. After that, the composite resin lid, which was fabricated by the Cervico system was placed into the extraction socket. Finally, the lid was connected to the adjacent teeth with an adhesive system and composite resin material. The patients were evaluated for a three-month interval for any complications and success of Extraction Socket Seal (ESS) technique. The data were tested by descriptive data analysis using the Statistical Package for Social Sciences (SPSS, version 29). Results: The proposed technique has been successfully performed in twenty-three cases; 13 cases were male and 10 cases were female; and the mean age of all cases was 32 years. Extraction Socket Seal (ESS) technique utilizing a composite resin lid fabricated from the Cervico system was used as socket sealant placed directly to cover the bone graft, and we found that it provided an excellent “barrier” for the graft without any unwanted complications. After three months, radiographs showed good bone healing, and the mean socket soft tissue healing score was 4 (Very good wound healing), and most importantly the soft tissue architecture and shape were well preserved. Conclusions: We concluded that the Extraction Socket Seal (ESS) technique offers a very simple and time-saving technique for alveolar ridge preservation after tooth extraction for both anterior and posterior extraction sockets, and it provides a good seal for the graft material and the soft tissue anatomy was well preserved. Keywords: Alveolar ridge preservation, Extraction Socket Seal, ESS, Delayed implant placement, Socket preservation, Tooth extraction.

Acellular Fish Skin Grafts for Treatment of Periocular Skin Defects.

To describe the outcomes of acellular fish skin grafts for repair of periocular anterior lamella skin defects after Mohs surgery for skin cancers. Following the institutional review board approval, we conducted a retrospective chart review of patients treated with acellular fish skin grafts between January 2022 and December 2023. Indication was to repair defects after Mohs excision of basal cell carcinoma and squamous cell carcinoma. Demographics, smoking and diabetes status, diagnosis, defect location, graft size, and complications were evaluated. Outcomes were analyzed using the scar cosmesis assessment and rating scale. Six patients (3 females and 3 males) with a mean age of 60.8 (range 44-80) had Mohs surgery for basal cell carcinoma (4) and squamous cell carcinoma (2). Location of defects included eyebrow (3 cases), lateral nasal wall (1 case), lower eyelid (1 case), and medial lower eyelid/nasal wall (1 case). Defect size ranged from 8 × 10 mm to 30 × 40 mm. Two patients had more than 1 application of xenograft. One patient developed a mild cicatricial ectropion. No other postoperative complications were seen, and all had good wound healing and cosmetically acceptable results. In this pilot study, acellular fish skin xenografts are shown to be promising skin graft substitutes in patients with Mohs defects and decrease the need for autologous skin harvesting or allogenic skin donation.

A RANDOMIZED CONTROLLED TRIAL TO COMPARE THE EFFECT OF JATHYADI GHRITA WITH POVIDONE IODINE OINTMENT IN DUSHTAVRANA

Dushtavrana is a commonly encountered problem faced in surgical practice. The presence of Dushtavrana worsens the condition of the patient with different complications which may become fatal and life-threatening. Good wound healing with minimal scar formation and pain is the prime motto of every surgeon. Many formula-tions have been in use for centuries. One of these is a polyherbal drug, Jathyadi Ghrita. The present study com-pares the effect of Jathyadi Ghrita and Povidone Iodine ointment on relief in signs and symptoms of Dushtav-rana. Clinically diagnosed 34 Dushtavrana patients were divided into groups A and B. Group A (Trial group) managed with Jathyadi Ghrita. Group B (the control group) was managed using the Povidone Iodine ointment application. The study duration was 28 days in both groups, with 17 participants in each group. Assessment was done on 0th, 7th,14th ,21st and 28th day. The data obtained was statistically analysed and interpreted. The assess-ment was done on the 0th,7th,14th,21st and 28th day. The collected data were subjected to statistical analysis using appropriate statistical methods. Frequency and percentages were calculated for qualitative variables, while mean and SD were calculated for quantitative variables. Nonparametric methods were employed to analyse the data. The Wilcoxon signed-rank test was used to assess the significant effect before and after treatment within each group. The Mann Whitney U test was used to compare two groups based on before and after treatment values. P value less than 0.05 is statistically significant. All analyses were carried out with the help of the software SPSS 23.0. Statistically significant changes were noted in pain and itching sensation by management with Jathyadi Ghrita in Dushtavrana compared to Povidone Iodine ointment. Considering all observations, statistical analysis was done, and conclusions were drawn. The study results statistically reveal that Jathyadi Ghrita shows better results than Povidone Iodine ointment in managing pain, itching sensation, burning sensation, ulcer size, and discharge. Thus, the null hypothesis is rejected, and the alternate hypothesis is accepted.

Analysis of Factors Influencing Trauma Healing in Children with Second-Degree Burns: A Single-Center Retrospective Study

Background: The complexity of studying secondary burn wound healing in children arises from the varying ability of skin tissue regeneration across different ages. Despite advancements, there are still gaps in our understanding. Objectives: This study aimed to explore factors influencing wound healing in children with second-degree burns to guide clinical treatment and nursing practices. Methods: We conducted a retrospective analysis of children with second-degree burns treated in our burn surgery department from January 2020 to December 2022. Based on the events per variable (EPV) rule, 220 children were included. They were categorized based on the quality of wound healing 14 days post-admission (good or poor), evaluated by the healing rate and scar formation. Children's clinical data were extracted from medical records for analysis. Binary logistic regression identified factors associated with poor healing outcomes in second-degree burns. Results: Among 220 patients with secondary burns, 166 (75.46%) experienced good wound healing, while 54 (24.54%) had poor outcomes. The Hosmer-Lemeshow test indicated a good model fit (χ2 = 9.739, P = 0.28). Significant variables included burn area (odds ratio [OR] = 1.217, 95% confidence interval [CI] = 1.109 - 1.335, P < 0.05), number of drug changes (OR = 1.902, 95%CI = 1.392 - 2.599, P < 0.05), white blood cell count (OR = 1.076, 95%CI = 1.008 - 1.150, P < 0.05), neutrophil count (OR = 1.080, 95%CI = 1.018 - 1.146, P < 0.05), and neutrophil ratio (OR = 1.040, 95%CI = 1.002 - 1.081, P < 0.05). Conclusions: Effective treatment and nursing of children with second-degree burns should prioritize managing large burn areas and high levels of inflammatory markers. Additionally, minimizing drug changes during the nursing process can enhance wound healing in children.

Effectiveness of application of Helichrysum italicum essential oil in wound healing: report of 3 cases

Helichrysum italicum (Hi) essential oil is commonly used in wound healing. Hi is an option for treating acute wounds, especially bleeding wounds. Coconut oil has also long been used for various skin disorders including wound healing and microbial infections. The high amount of antioxidants will be useful against free radicals which are considered the main cause of inflammation during the wound healing process. Hi essential oil was chosen because of its antimicrobial, anti-inflammatory, and wound-healing activities, all of which supported the wound-healing process in the three patients in this case report. The purpose of this case report is to determine the effectiveness of using Hi essential oil in healing wounds. We report 3 patients with wounds treated with topical Hi 10% essential oil in virgin coconut oil (VCO) applied three times daily until healed. All cases showed good wound healing without secondary infection. Despite the irritating side effects in patient 2, all three patients were satisfied with the results. The use of Hi 10% essential oil in VCO has advantages in terms of antimicrobial and anti-inflammatory effects on wound healing without secondary infection so it needs to be studied further as an alternative therapy option in wound healing

Wound healing potential of an Indian under-utilized fruit Garcinia gummi-gutta: Evidences from in vitro and in vivo experiments

Garcinia gummi-gutta is a native plant of Southeast Asia, commonly known as Malabar tamarind in English and Kudam puli in Tamil. In addition to utilization of dried pulp of this G. gummi-gutta fruit, traditional healers using it for wound healing, but there is no scientific piece of evidence. The main objective of the work is to investigate the wound-healing potential of G. gummi-gutta fruit using in vitro methods and in vivo excision model. Sequential extraction was done in the dried fruit pulp of G. gummi-gutta using different solvents (hexane, chloroform, ethyl acetate, methanol and water). Phytochemical screening and quantitative analysis results revealed the presence of high level of alkaloids (0.16 mg/mL), flavonoids (2.15 mg/mL), terpenoids (0.09 mg/mL), phytosterols (0.46 mg/mL), phenols (9.42 mg/mL) and tannins (1.27 mg/mL) in the methanol extract. Among various solvent extracts, methanol extract exhibited higher level of antioxidant (87.64% 2,2-Diphenyl-1-picrylhydrazyl scavenging, 82.86% superoxide scavenging, 19.03% hydrogen peroxide scavenging and 78.36% hydroxyl radical scavenging) and anti-inflammatory (41.67% inhibition of protein denaturation, 27.17% protease inhibition and 66.22% red blood cells membrane stabilization) properties. Liquid chromatography with mass spectroscopy and gas chromatography with mass spectroscopy analysis of methanolic extract revealed the presence of phytochemicals like Daphnoretin, Flindersine, Taxuspine-D, 3-Butenyl isothiocyanate, Cyclopentanone dimethyl hydrazone and 2-Acetyl indole. It was observed that the wound healing potential of ointment prepared from the methanolic extract of G. gummi-gutta was significantly (p < 0.05) higher (0.5 mm) than betadine treatment (0.9 mm) in Wistar rats on 11th day. Histopathalogical analysis G. gummi-gutta-treated animals exhibited a high amount of granulation tissue, microvascular density, epidermal closure and differentiation, which indicates the good wound healing capacity of the G. gummi-gutta. Thus, the present work recorded the wound healing potential of G. gummi-gutta-ointment through in vivo excision wound model in addition to proven various in vitro wound healing mechanisms.

Multiple animal bite injuries in a child: a case report

Animal bites are a leading cause of injury among children, of which dog bites contribute significantly to the burden of Rabies in the world. This was a case report of a 7-year-old migrant girl child who was admitted to the casualty as a victim of multiple stray dog bite injuries. The child presented with multiple and extensive lesions all over the body. Trauma related to animal bites cause not just physical pain and suffering but also emotional stress and carries the risk of Rabies which is a highly fatal disease. Prompt management of the case with post exposure prophylaxis against Rabies needs to be done immediately, along with wound management to ensure good treatment results and patient outcome. This report presents the case of a child who sustained multiple stray dog bite injuries all over the body. Patient was followed up for one month, showed good wound healing and recovery.

The Effect Of Black Cumin Nanoemulgel (Nigella sativa) On Fibroblasts In Post-Tooth Extraction Wound Healing In Mice

Background: Tooth extraction is said to be successful when accompanied by a good wound healing process. Innovation for post-tooth extraction wound treatment is necessary. Black cumin has active ingredients that function as anti-inflammatories. The formulation used is nanoemulgel because it has the advantages of stability and good adhesion. Objective: To evaluate the effect of black cumin nanoemulgel on the number of fibroblasts in the wound healing process after tooth extraction in rats. Methods: This study was conducted using post-test only control group design with a total sample of 22 samples divided into 4 groups with each group totaling 5 samples and 2 samples as a drop out. The application is carried out as much as 3 times a day for 5 days. Tissue collection from experimental animals was carried out and then histology preparations were made. Calculations of fibroblast were carried out using hematoxylin eosin (HE) staining and carried out in the apical 1/3 of the 3 visual fields with a V pattern. Statistical tests used are the One-Way Anova test and the Post Hoc LSD test. Results: There was significant difference in the number of fibroblasts between groups (p = 0.000). Black cumin nanoemulgel concentration of 15% showed highest number of fibroblasts. Conclusion: Nanoemulgel black cumin (Nigella sativa) 15% can increase the number of fibroblasts in wound healing post tooth extraction in rats. Nanoemulgel black cumin (Nigella sativa) 15% have the potential to accelerate wound healing process by increasing the number of fibroblasts.

A TA/Cu2+ Nanoparticle Enhanced Carboxymethyl Chitosan-Based Hydrogel Dressing with Antioxidant Properties and Promoting Wound Healing.

As the first line of immune defense and the largest organ of body, skin is vulnerable to damage caused by surgery, burns, collisions and other factors. Wound healing in the skin is a long and complex physiological process that is influenced by a number of different factors. Proper wound care can greatly improve the speed of wound healing and reduce the generation of scars. However, traditional wound dressings (bandages, gauze, etc.) often used in clinical practice have a single function, lack of active ingredients and are limited in use. Hydrogels with three-dimensional network structure are a potential biomedical material because of their physical and chemical environment similar to extracellular matrix. In particular, hydrogel dressings with low price, good biocompatibility, degradability, antibacterial and angiogenic activity are favored by the public. Here, a carboxymethyl chitosan-based hydrogel dressing (CMCS-TA/Cu2+) reinforced by copper ion crosslinked tannic acid (TA/Cu2+) nanoparticles was developed. This study investigated the physical and chemical characteristics, cytotoxicity, and angiogenesis of TA/Cu2+ nanoparticles and CMCS-TA/Cu2+ hydrogels. Furthermore, a full-thickness skin defect wound model was employed to assess the in vivo wound healing capacity of hydrogel dressings. The introduction of TA/Cu2+ nanoparticles not only could increase the mechanical properties of the hydrogel but also continuously releases copper ions to promote cell migration (the cell migration could reach 92% at 48 h) and tubule formation, remove free radicals and promote wound healing (repair rate could reach 90% at 9 days). Experiments have proved that CMCS-TA/Cu2+ hydrogel has good cytocompatibility, antioxidant and wound healing ability, providing an advantageous solution for skin repair.

Chia seed-mediated fabrication of ZnO/Ag/Ag2O nanocomposites: structural, antioxidant, anticancer, and wound healing studies.

Plant extract-mediated fabrication of metal nanocomposites is used in cell proliferation inhibition and topical wound treatment, demonstrating significant effectiveness. Salvia hispanica L. (chia) seed extract (CE) is used as the reaction medium for the green fabrication of ecofriendly ZnO(CE) nanoparticles (NPs) and Ag/Ag2O(CE) and ZnO/Ag/Ag2O(CE) nanocomposites. The resultant nanoparticles and nanocomposite materials were characterized using UV-visible, Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDX) techniques. In the context of antioxidant studies, ZnO/Ag/Ag2O(CE) exhibited 57% reducing power and 86% 2,2, diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging. All three materials showed strong antibacterial activity against Staphylococcus aureus (S. aureus), Escherichia coli (E.coli), and Bacillus subtilis (B. subtilis) bacterial strains. Additionally, ZnO(CE), Ag/Ag2O(CE), and ZnO/Ag/Ag2O(CE) also revealed 64.47%, 42.56%, and 75.27% in vitro Michigan Cancer Foundation-7 (MCF7) cancer cell line inhibition, respectively, at a concentration of 100μg/mL. Selectively, the most effective composite material, ZnO/Ag/Ag2O(CE), was used to evaluate in vivo wound healing potential in rat models. The study revealed 96% wound closure in 10days, which was quite rapid healing compared to wound healing using clinically available ointment. Therefore, in conclusion, the ZnO/Ag/Ag2O(CE) nanocomposite material could be considered for further testing and formulation as a good anticancer and wound healing agent.