scholarly journals NaHS-Hydrogel and Encapsulated Adipose-Derived Stem Cell Evaluation on an Ex Vivo Second-Degree Burn Model

2021 ◽  
Vol 2 (1) ◽  
pp. 9-30
Author(s):  
Lucille Capin ◽  
Olivia Gross-Amat ◽  
Marie Calteau ◽  
Marie-Rose Rovere ◽  
Damien Salmon ◽  
...  
Keyword(s):  
Wound Healing ◽  
Ex Vivo ◽  
Healing Process ◽  
Intradermal Injection ◽  
Proliferating Cells ◽  
Burn Treatment ◽  
Degree Burn ◽  
Collagen Iii ◽  
Procollagen Iii ◽  
Second Degree

Second-degree burns result in the loss of the epidermal barrier and could lead to delayed complications during the healing process. Currently, therapeutic options to treat severe burns are limited. Thus, this work aims to evaluate the effect of NaHS, a hydrogen sulfide (H2S) donor, in poloxamer hydrogel in topical application and the potentiating effect of injected encapsulated adipose-derived stem cells (ASCs) compared to monolayer ASCs using our previous second-degree burn model on human skin explants. Indeed, our model allows testing treatments in conditions similar to a clinical application. The observed benefits of NaHS may include an antioxidant role, which might be beneficial in the case of burns. Concerning ASCs, their interest in wound healing is more than well documented. In order to evaluate the efficiency of our treatments, we analyzed the kinetics of wound closure, keratinocyte proliferation, and dermal remodeling. The effect of NaHS led to a delay in re-epithelialization, with a decrease in the number of proliferating cells and a decrease in the synthesis of procollagen III. On the contrary, intradermal injection of ASCs, encapsulated or not, improves wound healing by accelerating re-epithelialization and collagen I synthesis; however, only encapsulated ASCs accelerate keratinocyte migration and increase the rate of procollagen III and collagen III. In conclusion, NaHS treatment did not improve burn healing. However, the injection of ASCs stimulated wound healing, which is encouraging for their therapeutical use in burn treatment.

673 Effect of Subcutaneous Topical Ozone Therapy on Second Degree Burn Wounds in Rats: An Experimental Study

2021 ◽  
Vol 42 (Supplement_1) ◽  
pp. S193-S193
Author(s):  
Emre Karakaya ◽  
Aydincan Akdur ◽  
H Ebru ◽  
Ayvazoglu Soy ◽  
Alev Ok Atilgan ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Silver Sulfadiazine ◽  
Male Rats ◽  
Control Group ◽  
Ozone Therapy ◽  
Burn Wounds ◽  
Degree Burn ◽  
Significant Difference ◽  
Second Degree

Abstract Introduction Burn is one of the most severe traumas that causes coagulative destruction of the skin. The use of various products that accelerate wound healing in patients with burn may affect the patient’s survival and reduce the complications that may be seen. In the present study we aimed effects of subcutaneous ozone injection on second degree burn wound. Methods A total of 72 Sprague-Dawley male rats included in the study were divided randomly into three groups (control group (CG), silver sulfadiazine group (SG), ozone group (OG)) and each group was divided randomly two subgroups (as sacrificed on d7 and on d14).A deep second degree scald burns were created on the lower back. In CG subcutaneous 0.9% serum saline was injected daily into the burn area. In SG, burns were dressed with silver sulfadiazine daily and in OG subcutaneous ozone was injected daily into the burn area. Tissue hydroxyproline level measurement and histopathological evaluation were done. Results When the groups were compared in terms of weight change, no significant difference was found on the 7th and 14th days. In the evaluation made in terms of tissue hydroxyproline, tissue hydroxyproline level in OG was found to be significantly higher on both the 7th and 14th days (p < 0.001). In histopathological evaluations, it was determined that wound healing in OG was significantly higher than in the other groups. Conclusions According to the results, subcutaneous ozone therapy is more effective than silver sulphadiazine in the healing process of second-degree burn wounds and it can be safely used in the treatment of burn wounds.

scholarly journals Burn Ointment Promoted Cutaneous Wound for Burns and Scalds by Modulating the PI3K/AKT/mTOR Signaling Pathway

2020 ◽  
Author(s):  
Da li Gan ◽  
Yan Yao ◽  
Qi yuan Su ◽  
Su qin Yang ◽  
Li Wu ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Skin Irritation ◽  
Mtor Pathway ◽  
Epithelial Tissue ◽  
Burn Wounds ◽  
Degree Burn ◽  
Tnf Α ◽  
Tgf Β1 ◽  
Second Degree

Abstract Background: Burn injury is common, burn ointment (BO) is a common preparation used to treat burns and scalds in folk as an effective remedy for burn healing. The present study was undertaken to evaluate the healing effect and related underlying mechanisms of BO in a model of deep second-degree thermal burn by animal experiments. Methods: BO is was made up of a combination of extracts from several traditional Chinese medicine and borneol, solid paraffin, rapeseed oil, and and its quality control was assessed. The acute toxicity test and skin irritation test were evaluated by rats. The anti-inflammatory effect was revealed by using inflammation animal models, including the xylene-induced auricle swelling in mice and carrageenan-induced toe swelling in rats. The hot plate test was used to evaluate its analgesic activity. Moreover, the experiments of knife and a deep second-degree burn wound were used to explore the effect of BO in promoting wound healing. On days 7, 14 and 28, the wounds were digitally photographed by a camera and after sacrifice of the SD rats, skin samples were obtained for performing H&E staining, immunohistochemical staining and Western Blotting examination. In addition, The expressed of TNF-α, TGF-β1 and VEGF in serum were detected by ELISA kits. Results: BO had no toxicity or side effects on the skin and liver or kidney function. BO could significantly inhibit auricular swelling in mice, paw welling in rats and markedly prolonged the latencies of licking paws in mice; it also could accelerate the process of wound healing and repair scar by promoting the formation of new epithelial tissue. In addition, BO significantly reduced the content of TNF-α and markedly increased the content of VEGF and TGF-β1 in the serum. Moreover, BO promoted the expression of collagen I. Furthermore, it increased the ratio of p-PI3K/PI3K, p-AKT/AKT and p-mTOR/mTOR in the PI3K / AKT / mTOR pathway.Conclusions: BO could effectively reduce inflammation and pain, and effectively accelerate the healing process of deep second-degree burn wounds. And the mechanism of BO promoting wound healing may be related to activate PI3K / AKT / mTOR pathway. therefore, it may be recommended as a promising topical medication for treating burn wounds in the future clinical trials.

Effect of Subcutaneous Topical Ozone Therapy on Second-Degree Burn Wounds in Rats: An Experimental Study

2021 ◽  
Author(s):  
Emre Karakaya ◽  
Aydincan Akdur ◽  
Ebru Ayvazoğlu Soy ◽  
Coşkun Araz ◽  
Alev Ok Atilgan ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Silver Sulfadiazine ◽  
Male Rats ◽  
Control Group ◽  
Ozone Therapy ◽  
Burn Wounds ◽  
Degree Burn ◽  
Significant Difference ◽  
Second Degree

Abstract Burns are one of the most severe traumas, causing coagulative destruction of the skin. The use of various products that accelerate wound healing in patients with burns may affect rates of patient survival and reduce complications. We studied the effects of subcutaneous ozone injection on second-degree burn wounds in animal model. For this study, 72 Sprague-Dawley male rats were divided randomly into the following three groups: control group , silver sulfadiazine group, and ozone group; each group was then divided randomly into two subgroups (day 7 or day 14 examination and sacrifice). Superficial partial thickness burns were created on the lower back. In the control group, subcutaneous 0.9% serum saline was injected daily into the burn area. In the silver sulfadiazine group, burns were dressed daily with silver sulfadiazine. In the ozone group, subcutaneous ozone was injected daily into the burn area. We performed tissue hydroxyproline level measurements and histopathological evaluations. When groups were compared in terms of weight change, no significant difference was found between day 7 and day 14. With regard to tissue hydroxyproline levels the ozone group had significantly higher levels on both day 7 and day 14 (P < .001). In histopathological evaluations, we determined that wound healing in the ozone group was significantly higher than in the other groups. We found that subcutaneous ozone therapy was more effective than silver sulfadiazine in the healing process of second-degree burn wounds and could be safely used in the treatment of burn wounds.

scholarly journals Carboxymethyl chitosan hydrogel formulations enhance the healing process in experimental partial-thickness (second-degree) burn wound healing

2021 ◽  
Vol 36 (3) ◽  
Author(s):  
Randys Caldeira Gonçalves ◽  
Roberta Signini ◽  
Luciana Martins Rosa ◽  
Yuri Santana Pereira Dias ◽  
Marina Clare Vinaud ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Carboxymethyl Chitosan ◽  
Burn Wound ◽  
Chitosan Hydrogel ◽  
Burn Wound Healing ◽  
Partial Thickness ◽  
Degree Burn ◽  
Second Degree

scholarly journals Pengaruh terapi oksigen hiperbarik terhadap penyembuhan luka pada luka bakar derajat dua dalam pada hewan coba kelinci

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Rudy H. Susilo ◽  
Mendy Hatibie ◽  
Jan T. Ngantung ◽  
Meilany F. Durry
Keyword(s):  
Wound Healing ◽  
Hyperbaric Oxygen ◽  
Hyperbaric Oxygen Therapy ◽  
Oxygen Therapy ◽  
Healing Process ◽  
Inflammatory Cells ◽  
Wound Healing Process ◽  
Burn Wounds ◽  
Degree Burn ◽  
Second Degree

Abstract: Wound healing process consists of inflammation, proliferation, and remodelling phases with increasing inflammatory cells, angiogenesis, and epithelization. Mechanism of hyperbaric oxygen therapy is O2 pressure over 1 ATA will increase oxygen pressure in the tissue. The main outcome measure is wound healing. This study was aimed to obtain the influence of hyperbaric oxygen therapy to wound healing process of deep second degree burn wounds. This was an experimental study. Subject were 36 rabbits divided into 2 groups, each of 18 rabbits. Deep second degree burn wounds were performed on all rabbits. One group was treated with hyperbaric oxygen therapy 2.4 ATA for 6 days, meanwhile the other group as control. The result of Mann-Whitney U test showed significant differences in inflammatory cells (P = 0.025) and epithelization (P = 0.024); albeit, there was not significant difference in angiogenesis (P = 0.442) between the two groups. Conclusion: Hyperbaric oxygen therapy could influence the inflammatory cells and epithelization but not the angiogenesis.Keywords: second degree burn wound, healing process, hyperbaric oxygen therapyAbstrak: Proses penyembuhan luka terdiri dari: fase inflamasi, proliferasi, dan perupaan kembali/remodeling, yang tampak dengan meningkatnya sel-sel radang, angiogenesis serta epitelialisasi. Mekanisme kerja terapi oksigen hiperbarik (TOHB) ialah pemberian tekanan O2 yang melebihi 1 ATA akan menyebabkan peningkatan tekanan O2 dalam jaringan. Jenis penelitian ialah eksperimental. Subyek penelitian 36 ekor kelinci yang dibuat luka bakar derajat dua dalam, kemudian dibagi menjadi dua kelompok, masing-masing 18 ekor. Kelompok perlakuan diberikan TOHB dengan dosis 2,4 ATA selama 6 hari sedangkan kelompok lain sebagai kontrol. Hasil uji Mann-Whitney U menunjukkan terdapat perbedaan bermakna pada jumlah sel radang (P = 0,025) dan epitelialisasi (P = 0,024), tetapi tidak terdapat perbedaan bermakna pada angiogenesis (p=0,442), serta ada perbedaan bermakna pada pada kedua kelompok. Simpulan: Terapi oksigen hiperbarik berpengaruh terhadap jumlah sel radang dan epitelialisasi namun tidak terhadap angiogenesis.Kata kunci: penyembuhan luka bakar, oksigen hiperbarik, luka bakar derajat dua dalam

scholarly journals Healing Effect of Sesame Ointment on Second-degree Burn Wound in Rats

2016 ◽  
Vol 5 (2) ◽  
pp. 56-62
Author(s):  
Setareh Tehrani ◽  
Parisa Lotfi ◽  
Sepideh Tehrani ◽  
Ehsan Jangholi ◽  
Hoda Aryan ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Treated Group ◽  
Sesame Oil ◽  
Control Group ◽  
Burn Wound ◽  
Matrix Deposition ◽  
Degree Burn ◽  
Anti Inflammatory ◽  
Second Degree

Background: Wound healing requires processes like cell migration, proliferation of extracellular matrix deposition, remodeling and angiogenesis. Also, anti-oxidative and anti-inflammatory reactions play key roles in the progression of wound healing. Previous studies showed that sesame oil has anti-inflammatory, antimicrobial and antioxidant activities. In addition, it is shown that sesame oil stimulates fibroblast production in vitro and in skin wounds. Therefore, in this study we investigated the effects of sesame ointment on the process of second-degree burn wound healing in rat models according to stereological parameters. Materials and Methods: In this experimental study, forty male Wistar rats (200±20 g) were randomly divided into four groups (n=10): ointment-base treated group (vehicle), silver sulfadiazine (SDD) treated group, sesame treated group (E1) and the control group which received no treatment. A 2×3 cm2 standard second-degree burn wound was induced on the posterior surface of animal’s neck under general anesthesia. After sacrifice, the animal’s skin sample was fixed in buffered formaldehyde for stereological evaluations. The data was analyzed by SPSS statistical software (version 14.0). P<0.05 was considered statistically significant. Results: According to our results, the mean of reduction in wound areas, volume density of collagen bundles and hair folicules, fibroblast populations, length density of vessels in E1 group was significantly higher than control group (P<0.05). The differences between E1 and SSD were not statistically noticeable regarding the stereological parameters. Conclusion: According to stereological analysis, administration of sesame ointment showed the ability to improve wound healing process and tissue regeneration in the treatment of skin damages.[GMJ.2016;5(2):56-62]

scholarly journals Effects of topical treatment of second-degree burn wounds with Lactobacillus acidophilus on the wound healing process in male rats

2017 ◽  
Vol 3 (3) ◽  
pp. 23-30 ◽  
Author(s):  
Amir Abbas Barzegari ◽  
Masood Hashemzaei ◽  
Raheleh Majdani ◽  
Ali-Reza Alihemmati ◽  
◽  
...  
Keyword(s):  
Wound Healing ◽  
Lactobacillus Acidophilus ◽  
Topical Treatment ◽  
Healing Process ◽  
Male Rats ◽  
Wound Healing Process ◽  
Burn Wounds ◽  
Degree Burn ◽  
Second Degree

Wound Healing Activity of Avocado Peel Ointment against Second Degree Burn Wound

2021 ◽  
Author(s):  
Ma I Yang ◽  
Ermi Girsang ◽  
Ali Napiah Nasution ◽  
Chrismis Novalinda Ginting
Keyword(s):  
Wound Healing ◽  
Burn Wound ◽  
Degree Burn ◽  
Wound Healing Activity ◽  
Second Degree

scholarly journals Effect of green tea on the second degree burn wounds in rats

2014 ◽  
Vol 47 (03) ◽  
pp. 370-374 ◽  
Author(s):  
Mohammad Javad Fatemi ◽  
Babak Nikoomaram ◽  
Amir Asadollah Khajeh Rahimi ◽  
Donya Talayi ◽  
Shahrzad Taghavi ◽  
...  
Keyword(s):  
Green Tea ◽  
Healing Process ◽  
Digital Camera ◽  
First Aid ◽  
Control Group ◽  
Burn Wounds ◽  
Beneficial Effects ◽  
Pathologic Evaluation ◽  
Degree Burn ◽  
Second Degree

ABSTRACT Background: Various studies indicate that the green tea has anti-inflammatory and anti-oxidative properties. Moreover, a few studies have been carried out that demonstrate beneficial effects of green tea on burned patients. Materials and Methods: In this study, green tea, Vaseline, and silver sulfadiazine dressings were used as first-aid treatment to deep dermal contact burns in rats, compared with a control of nothing. After creating second-degree burn on the dorsum of rats, the treatments were applied for 15 min in four groups. Wound dressing changes were daily. Macroscopic study was performed on days 1, 3, 7, and 14 by using a digital camera and software processing of photos. Microscopic examination was done by pathologic evaluation of skin specimens on day 14. Results: We observed that green tea usage significantly decreased burn size in comparison to the control group (P = 0.004). Conclusion: Green tea is effective on healing process of second degree burn wounds.

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