Kubilay Gürünlüoğlu , Basri Satilmiş , Mehmet Gül , Muhammed Dündar , Nurcan Göktürk , Sami Akbulut , Ahmet Koç , Semra Gürünlüoğlu , Mehmet Aslan , Ezgi Karaaslan , Mehmet Akif Türköz , Çağla Güner Toplu , Hasan Ateş , Muhammed Mehdi Üremiş , İrem Nur Menevşe , Elif Kayhan Kuştepe , Seren Sari Ünal , Ebubekir Altundaş , Turan Yildiz , Tevfik Tolga Şahin , Mehmet Demircan
{"title":"皮下脂肪干细胞注射和早期切除对严重烫伤大鼠全身氧化应激和伤口愈合的影响","authors":"Kubilay Gürünlüoğlu , Basri Satilmiş , Mehmet Gül , Muhammed Dündar , Nurcan Göktürk , Sami Akbulut , Ahmet Koç , Semra Gürünlüoğlu , Mehmet Aslan , Ezgi Karaaslan , Mehmet Akif Türköz , Çağla Güner Toplu , Hasan Ateş , Muhammed Mehdi Üremiş , İrem Nur Menevşe , Elif Kayhan Kuştepe , Seren Sari Ünal , Ebubekir Altundaş , Turan Yildiz , Tevfik Tolga Şahin , Mehmet Demircan","doi":"10.1016/j.burns.2024.07.037","DOIUrl":null,"url":null,"abstract":"<div><h3>Aim</h3><div>This study aims to develop an experimental treatment model effective against oxidative stress in the acute period of severe burns and to analyze the mechanisms of healing large wound defects.</div></div><div><h3>Methods</h3><div>Five rats, including 2 females and 3 males, were used as donors to obtain adipose-derived stem cells (ADSC) from the inguinal fat pad. The stem cells were labeled with green fluorescent protein. The study included four groups of 17 rats, each with grade 3 scalding burns on 30 % of their body surface, and a control group of 10 rats with an equal number of males and females. After early excision, 10<sup>6</sup> ADSC-derived stem cells were administered subdermally to the burned wound and autografted to the stem cell group (n = 17). The early excision group (n = 17) received early excision and autograft, with 2 ml of normal saline injected subdermally into the burn wound edge. The PLM group (n = 17) was treated with a polylactic membrane (PLM) dressing after the burn. No treatment was given to the burn group (n = 17). Ten rats from all groups were sacrificed on the 4th day post-burn for oxidative stress evaluation. The control group (n = 10) was sacrificed on day 4. Blood and tissue samples were collected post-sacrifice. Oxidative stress and inflammation in the blood, as well as cell damage in the skin, liver, kidneys, and lungs, were investigated histopathologically and biochemically on the 4th day post-burn. On the 70th day after burn, wound healing was examined macroscopically and histopathologically.</div></div><div><h3>Results</h3><div>On the 4th day, oxidative stress results showed that the levels of Total Oxidative Capacity (TOC) in the blood were lowest in the stem cell (7.4 [6–8.8]), control (6.7 [5.9–7.6]), and early excision (7.5 [6.6–8.5]) groups, with no significant difference between them. The burn group (14.7 [12.5–16.9]) had the highest TOC levels. The PLM group (9.7 [8.6–10.7]) had lower TOC levels than the burn group but higher levels than the other groups.</div><div>Histopathological examination on the 4th day revealed low liver caspase-3 immunoreactivity in the stem cell and early excision groups among the burn groups. Caspase-3 immunoreactivity levels were as follows: stem cell group (20 [10–30]), early excision group (25 [15–50]), PLM group (70 [50–100]), control group (0), and burn group (80 [60–120]). Other oxidative stress and end-organ damage outcomes were consistent with these results.</div><div>All rats in the stem cell group had burn wounds that healed completely by the 70th day. Examination of the skin and its appendages from the stem cell group with an immunofluorescence microscope demonstrated green coloration, indicating incorporation of stem cells.</div></div><div><h3>Conclusion</h3><div>Stem cells may have the potential to form new skin and its appendages, providing better healing for large skin defects. Early excision treatment, by removing local necrotic tissues after extensive and deep burns, can prevent end-organ damage due to systemic oxidative stress and inflammation. We also believe that when these two treatments are used together, they can achieve the best results.</div></div>","PeriodicalId":50717,"journal":{"name":"Burns","volume":"50 8","pages":"Pages 2056-2069"},"PeriodicalIF":3.2000,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The impact of subdermal adipose derived stem cell injections and early excision on systemic oxidative stress and wound healing in rats with severe scald burns\",\"authors\":\"Kubilay Gürünlüoğlu , Basri Satilmiş , Mehmet Gül , Muhammed Dündar , Nurcan Göktürk , Sami Akbulut , Ahmet Koç , Semra Gürünlüoğlu , Mehmet Aslan , Ezgi Karaaslan , Mehmet Akif Türköz , Çağla Güner Toplu , Hasan Ateş , Muhammed Mehdi Üremiş , İrem Nur Menevşe , Elif Kayhan Kuştepe , Seren Sari Ünal , Ebubekir Altundaş , Turan Yildiz , Tevfik Tolga Şahin , Mehmet Demircan\",\"doi\":\"10.1016/j.burns.2024.07.037\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Aim</h3><div>This study aims to develop an experimental treatment model effective against oxidative stress in the acute period of severe burns and to analyze the mechanisms of healing large wound defects.</div></div><div><h3>Methods</h3><div>Five rats, including 2 females and 3 males, were used as donors to obtain adipose-derived stem cells (ADSC) from the inguinal fat pad. The stem cells were labeled with green fluorescent protein. The study included four groups of 17 rats, each with grade 3 scalding burns on 30 % of their body surface, and a control group of 10 rats with an equal number of males and females. After early excision, 10<sup>6</sup> ADSC-derived stem cells were administered subdermally to the burned wound and autografted to the stem cell group (n = 17). The early excision group (n = 17) received early excision and autograft, with 2 ml of normal saline injected subdermally into the burn wound edge. The PLM group (n = 17) was treated with a polylactic membrane (PLM) dressing after the burn. No treatment was given to the burn group (n = 17). Ten rats from all groups were sacrificed on the 4th day post-burn for oxidative stress evaluation. The control group (n = 10) was sacrificed on day 4. Blood and tissue samples were collected post-sacrifice. Oxidative stress and inflammation in the blood, as well as cell damage in the skin, liver, kidneys, and lungs, were investigated histopathologically and biochemically on the 4th day post-burn. On the 70th day after burn, wound healing was examined macroscopically and histopathologically.</div></div><div><h3>Results</h3><div>On the 4th day, oxidative stress results showed that the levels of Total Oxidative Capacity (TOC) in the blood were lowest in the stem cell (7.4 [6–8.8]), control (6.7 [5.9–7.6]), and early excision (7.5 [6.6–8.5]) groups, with no significant difference between them. The burn group (14.7 [12.5–16.9]) had the highest TOC levels. The PLM group (9.7 [8.6–10.7]) had lower TOC levels than the burn group but higher levels than the other groups.</div><div>Histopathological examination on the 4th day revealed low liver caspase-3 immunoreactivity in the stem cell and early excision groups among the burn groups. Caspase-3 immunoreactivity levels were as follows: stem cell group (20 [10–30]), early excision group (25 [15–50]), PLM group (70 [50–100]), control group (0), and burn group (80 [60–120]). Other oxidative stress and end-organ damage outcomes were consistent with these results.</div><div>All rats in the stem cell group had burn wounds that healed completely by the 70th day. Examination of the skin and its appendages from the stem cell group with an immunofluorescence microscope demonstrated green coloration, indicating incorporation of stem cells.</div></div><div><h3>Conclusion</h3><div>Stem cells may have the potential to form new skin and its appendages, providing better healing for large skin defects. Early excision treatment, by removing local necrotic tissues after extensive and deep burns, can prevent end-organ damage due to systemic oxidative stress and inflammation. We also believe that when these two treatments are used together, they can achieve the best results.</div></div>\",\"PeriodicalId\":50717,\"journal\":{\"name\":\"Burns\",\"volume\":\"50 8\",\"pages\":\"Pages 2056-2069\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-08-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Burns\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S030541792400233X\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CRITICAL CARE MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Burns","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S030541792400233X","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CRITICAL CARE MEDICINE","Score":null,"Total":0}
The impact of subdermal adipose derived stem cell injections and early excision on systemic oxidative stress and wound healing in rats with severe scald burns
Aim
This study aims to develop an experimental treatment model effective against oxidative stress in the acute period of severe burns and to analyze the mechanisms of healing large wound defects.
Methods
Five rats, including 2 females and 3 males, were used as donors to obtain adipose-derived stem cells (ADSC) from the inguinal fat pad. The stem cells were labeled with green fluorescent protein. The study included four groups of 17 rats, each with grade 3 scalding burns on 30 % of their body surface, and a control group of 10 rats with an equal number of males and females. After early excision, 106 ADSC-derived stem cells were administered subdermally to the burned wound and autografted to the stem cell group (n = 17). The early excision group (n = 17) received early excision and autograft, with 2 ml of normal saline injected subdermally into the burn wound edge. The PLM group (n = 17) was treated with a polylactic membrane (PLM) dressing after the burn. No treatment was given to the burn group (n = 17). Ten rats from all groups were sacrificed on the 4th day post-burn for oxidative stress evaluation. The control group (n = 10) was sacrificed on day 4. Blood and tissue samples were collected post-sacrifice. Oxidative stress and inflammation in the blood, as well as cell damage in the skin, liver, kidneys, and lungs, were investigated histopathologically and biochemically on the 4th day post-burn. On the 70th day after burn, wound healing was examined macroscopically and histopathologically.
Results
On the 4th day, oxidative stress results showed that the levels of Total Oxidative Capacity (TOC) in the blood were lowest in the stem cell (7.4 [6–8.8]), control (6.7 [5.9–7.6]), and early excision (7.5 [6.6–8.5]) groups, with no significant difference between them. The burn group (14.7 [12.5–16.9]) had the highest TOC levels. The PLM group (9.7 [8.6–10.7]) had lower TOC levels than the burn group but higher levels than the other groups.
Histopathological examination on the 4th day revealed low liver caspase-3 immunoreactivity in the stem cell and early excision groups among the burn groups. Caspase-3 immunoreactivity levels were as follows: stem cell group (20 [10–30]), early excision group (25 [15–50]), PLM group (70 [50–100]), control group (0), and burn group (80 [60–120]). Other oxidative stress and end-organ damage outcomes were consistent with these results.
All rats in the stem cell group had burn wounds that healed completely by the 70th day. Examination of the skin and its appendages from the stem cell group with an immunofluorescence microscope demonstrated green coloration, indicating incorporation of stem cells.
Conclusion
Stem cells may have the potential to form new skin and its appendages, providing better healing for large skin defects. Early excision treatment, by removing local necrotic tissues after extensive and deep burns, can prevent end-organ damage due to systemic oxidative stress and inflammation. We also believe that when these two treatments are used together, they can achieve the best results.
期刊介绍：
Burns aims to foster the exchange of information among all engaged in preventing and treating the effects of burns. The journal focuses on clinical, scientific and social aspects of these injuries and covers the prevention of the injury, the epidemiology of such injuries and all aspects of treatment including development of new techniques and technologies and verification of existing ones. Regular features include clinical and scientific papers, state of the art reviews and descriptions of burn-care in practice.
Topics covered by Burns include: the effects of smoke on man and animals, their tissues and cells; the responses to and treatment of patients and animals with chemical injuries to the skin; the biological and clinical effects of cold injuries; surgical techniques which are, or may be relevant to the treatment of burned patients during the acute or reconstructive phase following injury; well controlled laboratory studies of the effectiveness of anti-microbial agents on infection and new materials on scarring and healing; inflammatory responses to injury, effectiveness of related agents and other compounds used to modify the physiological and cellular responses to the injury; experimental studies of burns and the outcome of burn wound healing; regenerative medicine concerning the skin.
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