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Aslan M, Gül M, Üremiş N, Akbulut S, Gürünlüoğlu S, Nur Özsoy E, Türköz Y, Ateş H, Akpinar N, Gül S, Gürünlüoğlu K, Demircan M. Ninety Sixth-Hour Impact of Scalding Burns on End Organ Damage, Systemic Oxidative Stress, and Wound Healing in Rats Treated With Three Different Types of Dressings. J Burn Care Res 2024; 45:733-743. [PMID: 38079377 DOI: 10.1093/jbcr/irad191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
In this study, we investigated the effects of 3 different burn dressing treatments, including experimental, silver, and modern dressing materials, on systemic oxidative stress in rats with severe scald burns within the first 96 h. The rats were divided into five groups: a burn group (n = 10), a polylactic membrane group (n = 10), a silver sulfadiazine group (n = 10), a curcumin group (n = 10), and a control group (n = 10), consisting of equal numbers of female and male rats. In the first 4 groups, 30% of the rats' total body surface area was scalded at 95°C. The burn group was not treated. Each group was treated with group-name dressing material. The control group was neither treated nor burned. The rats were sacrificed, and blood and tissue samples were obtained at the 96th hour when severe effects of oxidative stress developed postburns. Systemic inflammatory biomarkers and oxidative stress parameters were examined. In addition, apoptosis and organ damage in liver, kidney, lung, and skin tissues were evaluated biochemically and histopathologically. When the parameters were statistically analyzed, we found that the systemic levels of oxidative stress and inflammatory damage to liver, kidney, and lung tissues were lower in the 3 treated groups than in the burn group. We believe that the dressing material's efficacy in the treatment of severe burns may be dependent on its ability to combat oxidative stress and inflammation.
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Affiliation(s)
- Mehmet Aslan
- Department of Pediatrics, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Mehmet Gül
- Department of Histology and Embryology, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Nuray Üremiş
- Department of Medical Biochemistry, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Sami Akbulut
- Department of General Surgery, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Semra Gürünlüoğlu
- Department of Pathology, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Eda Nur Özsoy
- Department of Histology and Embryology, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Yusuf Türköz
- Department of Medical Biochemistry, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Hasan Ateş
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Necmettin Akpinar
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Semir Gül
- Department of Histology and Embryology, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Kubilay Gürünlüoğlu
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
| | - Mehmet Demircan
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Faculty of Medicine, Inonu University, Malatya 44280, Turkiye
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Gavia-García G, Rosado-Pérez J, Arista-Ugalde TL, Aguiñiga-Sánchez I, Santiago-Osorio E, Mendoza-Núñez VM. The consumption of Sechium edule (chayote) has antioxidant effect and prevents telomere attrition in older adults with metabolic syndrome. Redox Rep 2023; 28:2207323. [PMID: 37140004 PMCID: PMC10165935 DOI: 10.1080/13510002.2023.2207323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
OBJECTIVE To determine the effect of the consumption of Sechium edule (1.5 g/day) for six months on oxidative stress (OxS) and inflammation markers and its association with telomere length (TL) in older adults with metabolic syndrome (MetS). METHODS The study was conducted in a sample of 48 older adults: placebo (EP) and experimental (EG) groups. Lipoperoxides, protein carbonylation, 8-OHdG, total oxidant status (TOS), SOD, GPx, H2O2 inhibition, total antioxidant status (TAS), inflammatory cytokines (IL6, IL10, TNF-α), and TL were measured before and six months post-treatment. RESULTS We found a significant decrease in the levels of lipoperoxides, protein carbonylation, 8-OHdG, TOS in the EG in comparison PG. Likewise, a significante increase of TAS, IL-6, and IL-10 levels was found at six months post-treatment in EG in comparison with PG. TL showed a statistically significant decrease in PG compared to post-treatment EG. CONCLUSIONS Our findigns showed that the supplementation of Sechium edule has antioxidant, and anti-inflammatory effects, and diminushion of shortening of telomeric DNA in older adults with MetS. This would be the first study that shows that the intervention with Sechium edule has a possible geroprotective effect by preventing telomeres from shortening as usually happens in these patients. Therefore, suggesting a protection of telomeric DNA and genomic DNA.
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Affiliation(s)
- Graciela Gavia-García
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | - Juana Rosado-Pérez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | | | - Itzen Aguiñiga-Sánchez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico
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Haller HL, Sander F, Popp D, Rapp M, Hartmann B, Demircan M, Nischwitz SP, Kamolz LP. Oxygen, pH, Lactate, and Metabolism-How Old Knowledge and New Insights Might Be Combined for New Wound Treatment. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:medicina57111190. [PMID: 34833408 PMCID: PMC8617754 DOI: 10.3390/medicina57111190] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/23/2021] [Accepted: 10/26/2021] [Indexed: 12/23/2022]
Abstract
Over time, we have come to recognize a very complex network of physiological changes enabling wound healing. An immunological process enables the body to distinguish damaged cells and begin a cleaning mechanism by separating damaged proteins and cells with matrix metalloproteinases, a complement reaction, and free radicals. A wide variety of cell functions help to rebuild new tissue, dependent on energy provision and oxygen supply. Like in an optimized “bio-reactor,” disturbance can lead to prolonged healing. One of the earliest investigated local factors is the pH of wounds, studied in close relation to the local perfusion, oxygen tension, and lactate concentration. Granulation tissue with the wrong pH can hinder fibroblast and keratinocyte division and proliferation, as well as skin graft takes. Methods for influencing the pH have been tested, such as occlusion and acidification by the topical application of acidic media. In most trials, this has not changed the wound’s pH to an acidic one, but it has reduced the strong alkalinity of deeper or chronic wounds. Energy provision is essential for all repair processes. New insights into the metabolism of cells have changed the definition of lactate from a waste product to an indispensable energy provider in normoxic and hypoxic conditions. Neovascularization depends on oxygen provision and lactate, signaling hypoxic conditions even under normoxic conditions. An appropriate pH is necessary for successful skin grafting; hypoxia can change the pH of wounds. This review describes the close interconnections between the local lactate levels, metabolism, healing mechanisms, and pH. Furthermore, it analyzes and evaluates the different possible ways to support metabolism, such as lactate enhancement and pH adjustment. The aim of wound treatment must be the optimization of all these components. Therefore, the role of lactate and its influence on wound healing in acute and chronic wounds will be assessed.
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Affiliation(s)
| | - Frank Sander
- Burn Center, Plastic Surgery of Trauma Hospital Berlin, Warener Strasse 7, 12683 Berlin, Germany; (F.S.); (B.H.)
| | - Daniel Popp
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University Graz, Auenbruggerplatz 29, 8036 Graz, Austria; (D.P.); (S.P.N.); (L.P.K.)
| | - Matthias Rapp
- Clinic for Orthopedics, Trauma Surgery and Sports Traumatology, Burn Center, Marienhospital Stuttgart, Böheimstraße 37, 70199 Stuttgart, Germany;
| | - Bernd Hartmann
- Burn Center, Plastic Surgery of Trauma Hospital Berlin, Warener Strasse 7, 12683 Berlin, Germany; (F.S.); (B.H.)
| | - Mehmet Demircan
- Pediatric Intensive Burn Care Unit, Department of Pediatric Surgery, Faculty of Medicine, İnönü University, 44315 Malatya, Turkey;
| | - Sebastian Philipp Nischwitz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University Graz, Auenbruggerplatz 29, 8036 Graz, Austria; (D.P.); (S.P.N.); (L.P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgsellschaft mbH, 8036 Graz, Austria
| | - Lars Peter Kamolz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University Graz, Auenbruggerplatz 29, 8036 Graz, Austria; (D.P.); (S.P.N.); (L.P.K.)
- COREMED—Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgsellschaft mbH, 8036 Graz, Austria
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Haller HL, Blome-Eberwein SE, Branski LK, Carson JS, Crombie RE, Hickerson WL, Kamolz LP, King BT, Nischwitz SP, Popp D, Shupp JW, Wolf SE. Porcine Xenograft and Epidermal Fully Synthetic Skin Substitutes in the Treatment of Partial-Thickness Burns: A Literature Review. ACTA ACUST UNITED AC 2021; 57:medicina57050432. [PMID: 33946298 PMCID: PMC8146423 DOI: 10.3390/medicina57050432] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/24/2022]
Abstract
Background and Objectives: Porcine xenografts have been used successfully in partial thickness burn treatment for many years. Their disappearance from the market led to the search for effective and efficient alternatives. In this article, we examine the synthetic epidermal skin substitute Suprathel® as a substitute in the treatment of partial thickness burns. Materials and Methods: A systematic review following the PRISMA guidelines has been performed. Sixteen Suprathel® and 12 porcine xenograft studies could be included. Advantages and disadvantages between the treatments and the studies’ primary endpoints have been investigated qualitatively and quantitatively. Results: Although Suprathel had a nearly six times larger TBSA in their studies (p < 0.001), it showed a significantly lower necessity for skin grafts (p < 0.001), and we found a significantly lower infection rate (p < 0.001) than in Porcine Xenografts. Nonetheless, no significant differences in the healing time (p = 0.67) and the number of dressing changes until complete wound healing (p = 0.139) could be found. Both products reduced pain to various degrees with the impression of a better performance of Suprathel® on a qualitative level. Porcine xenograft was not recommended for donor sites or coverage of sheet-transplanted keratinocytes, while Suprathel® was used successfully in both indications. Conclusion: The investigated parameters indicate that Suprathel® to be an effective replacement for porcine xenografts with even lower subsequent treatment rates. Suprathel® appears to be usable in an extended range of indications compared to porcine xenograft. Data heterogeneity limited conclusions from the results.
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Affiliation(s)
| | - Sigrid E. Blome-Eberwein
- Lehigh Valley Health Network 1200 S. Cedar Crest Blvd. Kasych 3000, Allentown, PA 18103, USA; (S.E.B.-E.); (S.E.W.)
| | - Ludwik K. Branski
- Department of Surgery—Burn Surgery, The University of Texas Medical Branch and Shriners Hospitals for Children, 301 University BLVD, Galveston, TX 77555, USA;
| | - Joshua S. Carson
- Department of Surgery, UF Health Shands Burn Center, University of Florida, 1600 SW Archer Rd, Gainesville, FL 32610, USA;
| | - Roselle E. Crombie
- Connecticut Burn Center, Yale New Haven Heal System, 267 Grant St, Bridgeport, CT 06610, USA;
| | - William L. Hickerson
- Memphis Medical Center Burn Center, 890 Madison Avenue, Suite TG032, Memphis, TN 38103, USA;
| | - Lars Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University, 8053 Graz, Austria; (L.P.K.); (S.P.N.); (D.P.)
| | - Booker T. King
- Division of Burn Surgery, Department of Surgery, 101 Manning Drive CB #7206, Chapel Hill, NC 27599, USA;
| | - Sebastian P. Nischwitz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University, 8053 Graz, Austria; (L.P.K.); (S.P.N.); (D.P.)
| | - Daniel Popp
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University, 8053 Graz, Austria; (L.P.K.); (S.P.N.); (D.P.)
| | - Jeffrey W. Shupp
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, 110 Irving St NW, Washington, DC 20010, USA;
| | - Steven E. Wolf
- Lehigh Valley Health Network 1200 S. Cedar Crest Blvd. Kasych 3000, Allentown, PA 18103, USA; (S.E.B.-E.); (S.E.W.)
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Made in Germany: A Quality Indicator Not Only in the Automobile Industry But Also When It Comes to Skin Replacement: How an Automobile Textile Research Institute Developed a New Skin Substitute. ACTA ACUST UNITED AC 2021; 57:medicina57020143. [PMID: 33562479 PMCID: PMC7914466 DOI: 10.3390/medicina57020143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 11/17/2022]
Abstract
Successful research and development cooperation between a textile research institute, the German Federal Ministry of Education and Research via the Center for Biomaterials and Organ Substitutes, the University of Tübingen, and the Burn Center of Marienhospital, Stuttgart, Germany, led to the development of a fully synthetic resorbable temporary epidermal skin substitute for the treatment of burns, burn-like syndromes, donor areas, and chronic wounds. This article describes the demands of the product and the steps that were taken to meet these requirements. The material choice was based on the degradation and full resorption of polylactides to lactic acid and its salts. The structure and morphology of the physical, biological, and degradation properties were selected to increase the angiogenetic abilities, fibroblasts, and extracellular matrix generation. Water vapor permeability and plasticity were adapted for clinical use. The available scientific literature was screened for the use of this product. A clinical application demonstrated pain relief paired with a reduced workload, fast wound healing with a low infection rate, and good cosmetic results. A better understanding of the product's degradation process explained the reduction in systemic oxidative stress shown in clinical investigations compared to other dressings, positively affecting wound healing time and reducing the total area requiring skin grafts. Today, the product is in clinical use in 37 countries. This article describes its development, the indications for product growth over time, and the scientific foundation of treatments.
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Effect of Sechium edule var. nigrum spinosum (Chayote) on Telomerase Levels and Antioxidant Capacity in Older Adults with Metabolic Syndrome. Antioxidants (Basel) 2020; 9:antiox9070634. [PMID: 32708368 PMCID: PMC7402181 DOI: 10.3390/antiox9070634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 02/06/2023] Open
Abstract
Patients with metabolic syndrome (MetS) have a redox imbalance, due to a decay in antioxidant capacity. Oxidative stress (OxS) is considered an important modulator of telomere shortening and telomerase activity. One of the fruits that has been associated with an antioxidant effect is Sechium edule and although its properties are well established, there is only one exploratory study evaluating its effectiveness in patients with MetS. The present investigation is a much more robust and controlled study, including a placebo group. Hence, we determined the effect of consumption of the dried fruit powder (500 mg, three times per day) for three months. We measured effects on telomerase levels, antioxidant capacity, and markers for OxS. The study was performed in a sample of 75 older adults: placebo group (n = 30) and experimental group (n = 45) with the diagnosis of MetS according to the National Adult Treatment Panel of the National Cholesterol Program III (NCEP/ATP III) criteria. All markers were measured before and after three months of treatment. There was a statistically significant decrease in lipoperoxides and protein carbonylation with an increased superoxide dismutase (SOD), as well as sustained levels of telomerase in patients who consumed Sechium edule. Our findings suggest that consumption of this fruit has a hypoglycemic, hypotensive, and antioxidant effect, without altering telomerase levels, which could suggest better protection against telomere shortening.
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