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Krstic B, Selakovic D, Jovicic N, Krstic M, Katanic Stankovic JS, Rosic S, Milovanovic D, Rosic G. Complex Hippocampal Response to Thermal Skin Injury and Protocols with Hyperbaric Oxygen Therapy and Filipendula ulmaria Extract in Rats. Int J Mol Sci 2024; 25:3033. [PMID: 38474277 DOI: 10.3390/ijms25053033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
The aim of this study was to evaluate the alterations of the hippocampal function that may be related to anxiogenic response to thermal skin injury, including the morpho-functional alterations, and the effects of hyperbaric oxygen (HBO) and Filipendula ulmaria (FU) extract in the treatment of anxiety-like behavior that coincides with thermal skin injury. A rat thermal skin injury experimental model was performed on 2-month-old male Wistar albino rats. The evaluated therapeutic protocols included HBO and/or antioxidant supplementation. HBO was applied for 7 days in the hyperbaric chamber (100% O2, 2.5 ATA, 60 min). Oral administration of FU extract (final concentration of 100 mg/kg b.w.) to achieve antioxidant supplementation was also applied for 7 days. Anxiety level was estimated in the open field and elevated plus-maze test, which was followed by anesthesia, sacrifice, and collection of hippocampal tissue samples. HBO treatment and FU supplementation significantly abolished anxiogenic response to thermal skin injury. This beneficial effect was accompanied by the reduction in hippocampal pro-inflammatory and pro-apoptotic indicators, and enhanced BDNF and GABA-ARα2S gene expression, previously observed in untreated burns. The hippocampal relative gene expression of melatonin receptors and NPY positively responded to the applied protocols, in the same manner as µ and δ opioid receptors, while the opposite response was observed for κ receptors. The results of this study provide some confirmations that adjuvant strategies, such as HBO and antioxidant supplementation, may be simultaneously applied in the treatment of the anxiety-like behavior that coincides with thermal skin injury.
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Affiliation(s)
- Bojana Krstic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Dragica Selakovic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Nemanja Jovicic
- Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Milos Krstic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Jelena S Katanic Stankovic
- Department of Science, Institute for Information Technologies Kragujevac, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Sara Rosic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Dragan Milovanovic
- Clinical Pharmacology Department, Clinical Centre Kragujevac, 34000 Kragujevac, Serbia
- Department of Pharmacology and Toxicology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
| | - Gvozden Rosic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
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Davenport LM, Letson HL, Dobson GP. Lung Protection After Severe Thermal Burns With Adenosine, Lidocaine, and Magnesium (ALM) Resuscitation and Importance of Shams in a Rat Model. J Burn Care Res 2024; 45:216-226. [PMID: 37602979 PMCID: PMC10768784 DOI: 10.1093/jbcr/irad127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Indexed: 08/22/2023]
Abstract
The management of severe burns remains a complex challenge. Adenosine, lidocaine, and magnesium (ALM) resuscitation therapy has been shown to protect against hemorrhagic shock and traumatic injury. The aim of the present study was to investigate the early protective effects of small-volume ALM fluid resuscitation in a rat model of 30% total body surface area (TBSA) thermal injury. Male Sprague-Dawley rats (320-340 g; n = 25) were randomly assigned to: 1) Sham (surgical instrumentation and saline infusion, without burn, n = 5), 2) Saline resuscitation group (n = 10), or 3) ALM resuscitation group (n = 10). Treatments were initiated 15-min after burn trauma, including 0.7 mL/kg 3% NaCl ± ALM bolus and 0.25-0.5 mL/kg/h 0.9% NaCl ± ALM drip, with animals monitored to 8.25-hr post-burn. Hemodynamics, cardiac function, blood chemistry, hematology, endothelial injury markers and histopathology were assessed. Survival was 100% for Shams and 90% for both ALM and Saline groups. Shams underwent significant physiological, immune and hematological changes over time as a result of surgical traums. ALM significantly reduced malondialdehyde levels in the lungs compared to Saline (P = .023), and showed minimal alveolar destruction and inflammatory cell infiltration (P < .001). ALM also improved cardiac function and oxygen delivery (21%, P = .418 vs Saline), reduced gut injury (P < .001 vs Saline), and increased plasma adiponectin (P < .001 vs baseline). Circulating levels of the acute phase protein alpha 1-acid glycoprotein (AGP) increased 1.6-times (P < .001), which may have impacted ALM's therapeutic efficacy. We conclude that small-volume ALM therapy significantly reduced lung oxidative stress and preserved alveolar integrity following severe burn trauma. Further studies are required to assess higher ALM doses with longer monitoring periods.
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Affiliation(s)
- Lisa M Davenport
- Heart and Trauma Research Laboratory, College of Medicine and Dentistry, James Cook University, Queensland 4811, Australia
| | - Hayley L Letson
- Heart and Trauma Research Laboratory, College of Medicine and Dentistry, James Cook University, Queensland 4811, Australia
| | - Geoffrey P Dobson
- Heart and Trauma Research Laboratory, College of Medicine and Dentistry, James Cook University, Queensland 4811, Australia
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Dombrecht D, Van Daele U, Van Asbroeck B, Schieffelers DR, Guns PJ, van Breda E. Skeletal muscle wasting after burn is regulated by a decrease in anabolic signaling in the early flow phase. Burns 2023; 49:1574-1584. [PMID: 37833149 DOI: 10.1016/j.burns.2023.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/14/2023] [Accepted: 08/10/2023] [Indexed: 10/15/2023]
Abstract
Following burns a sustained catabolic stress response is activated, resulting in skeletal muscle wasting. A better understanding of the underlying mechanisms of postburn skeletal muscle wasting is essential for the development of preventive and/or therapeutic strategies. Six weeks old female rats underwent a sham, 10% or 40% total body surface area scald burn. Ten days post-injury, severely burned animals gained significantly less weight compared to sham treated and minor burned animals, reflected in a significantly lower ratio of muscle to total body weight for Soleus (SOL) and Extensor Digitorum Longus (EDL) in the severely burned group. Postburn, total fiber number was significantly lower in EDL, while in SOL the amount of type1 fibers significantly increased and type2 fibers significantly decreased. No signs of mitochondrial dysfunction (COX/SDH) or apoptosis (caspase-3) were found. In SOL and EDL, eEF2 and pAKT expression was significantly lower after severe burn. MURF1,2,3 and Atrogin-1 was significantly higher in SOL, whilst in EDL MURF1,2,3 was significantly lower postburn. In both muscles, FOXO3A was significantly lower postburn. This study identified postburn changes in muscle anthropomorphology and proteins involved in pathways regulating protein synthesis and breakdown, with more pronounced catabolic effects in SOL.
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Affiliation(s)
- Dorien Dombrecht
- Department of Rehabilitation Sciences & Physiotherapy, Research Group MOVANT, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Ulrike Van Daele
- Department of Rehabilitation Sciences & Physiotherapy, Research Group MOVANT, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium; Oscare, Organisation for Burns, Scar After-Care and Research, 2170 Antwerp, Belgium.
| | - Birgit Van Asbroeck
- Department of Rehabilitation Sciences & Physiotherapy, Research Group MOVANT, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - David R Schieffelers
- Department of Rehabilitation Sciences & Physiotherapy, Research Group MOVANT, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Pieter-Jan Guns
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Eric van Breda
- Department of Rehabilitation Sciences & Physiotherapy, Research Group MOVANT, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium.
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Lukomskyj AO, Rao N, Yan L, Pye JS, Li H, Wang B, Li JJ. Stem Cell-Based Tissue Engineering for the Treatment of Burn Wounds: A Systematic Review of Preclinical Studies. Stem Cell Rev Rep 2022; 18:1926-1955. [PMID: 35150392 PMCID: PMC9391245 DOI: 10.1007/s12015-022-10341-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2022] [Indexed: 02/06/2023]
Abstract
Burn wounds are a devastating type of skin injury leading to severe impacts on both patients and the healthcare system. Current treatment methods are far from ideal, driving the need for tissue engineered solutions. Among various approaches, stem cell-based strategies are promising candidates for improving the treatment of burn wounds. A thorough search of the Embase, Medline, Scopus, and Web of Science databases was conducted to retrieve original research studies on stem cell-based tissue engineering treatments tested in preclinical models of burn wounds, published between January 2009 and June 2021. Of the 347 articles retrieved from the initial database search, 33 were eligible for inclusion in this review. The majority of studies used murine models with a xenogeneic graft, while a few used the porcine model. Thermal burn was the most commonly induced injury type, followed by surgical wound, and less commonly radiation burn. Most studies applied stem cell treatment immediately post-burn, with final endpoints ranging from 7 to 90 days. Mesenchymal stromal cells (MSCs) were the most common stem cell type used in the included studies. Stem cells from a variety of sources were used, most commonly from adipose tissue, bone marrow or umbilical cord, in conjunction with an extensive range of biomaterial scaffolds to treat the skin wounds. Overall, the studies showed favourable results of skin wound repair in animal models when stem cell-based tissue engineering treatments were applied, suggesting that such strategies hold promise as an improved therapy for burn wounds.
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Affiliation(s)
- Alissa Olga Lukomskyj
- Kolling Institute, Faculty of Medicine and Health, University of Sydney, St Leonards, NSW, 2065, Australia
| | - Nikitha Rao
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Lei Yan
- Department of Orthopedics, Shanxi Medical University Second Affiliated Hospital, Taiyuan, 030001, China
| | - Jasmine Sarah Pye
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Haiyan Li
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Bin Wang
- Department of Orthopedics, Shanxi Medical University Second Affiliated Hospital, Taiyuan, 030001, China. .,Department of Orthopaedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 315000, China.
| | - Jiao Jiao Li
- Kolling Institute, Faculty of Medicine and Health, University of Sydney, St Leonards, NSW, 2065, Australia. .,School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, Sydney, NSW, 2007, Australia.
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Morarasu S, Morarasu BC, Ghețu N, Dimofte MG, Iliescu R, Pieptu D. Experimental models for controlled burn injuries in rats: a systematic analysis of original methods and burn devices. J Burn Care Res 2021; 43:1055-1065. [PMID: 34888684 DOI: 10.1093/jbcr/irab234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
AIM Despite a wide variety of models found in literature, choosing the right one can be difficult as many of them are lacking precise methodology. This study aims to analyze and compare original burn models in terms of burn device and technique, parameters, and wound depth assessment. METHODS A systematic search was performed according to PRISMA guidelines on studies describing original experimental burn models in rats. The adapted PICO formula and ARRIVE checklist were followed for inclusion and assessment of quality of studies. Characteristics of animals, burn technique, burn parameters and method of histological confirmation of burn depth were recorded. RESULTS Twenty-seven studies were included in the final analysis. Most studies used direct contact with skin for burn infliction (n=20). The rat's dorsum was the most common site (n=18). Ten studies used manually controlled burn devices, while ten designed automatic burn devices with control over temperature (n=10), exposure time (n=5), and pressure (n=5). Most studies (n=7) used a single biopsy taken from the center of the wound to confirm burn depth immediately after burn infliction. CONCLUSION From the wide variety of burn models in current literature, our study provides an overview of the most relevant experimental burn models in rats aiding researchers to understand what needs to be addressed when designing their burn protocol. Models cannot be compared as burn parameters variate significantly. Assessment of burn depth should be done in a standardized, sequential fashion in future burn studies to increase reproducibility.
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Affiliation(s)
- Stefan Morarasu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,2nd Department of Surgical Oncology, Regional Oncology Institute, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Bianca-Codrina Morarasu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Nicolae Ghețu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,Department of Plastic and Reconstructive Surgery, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Mihail-Gabriel Dimofte
- 2nd Department of Surgical Oncology, Regional Oncology Institute, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Radu Iliescu
- Department of Pharmacology, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | - Dragos Pieptu
- Center of Simulation and Training in Surgery (CSTC), Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania.,Department of Plastic and Reconstructive Surgery, Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
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DeSpain K, Rosenfeld CR, Huebinger R, Wang X, Jay JW, Radhakrishnan RS, Wolf SE, Song J. Carotid smooth muscle contractility changes after severe burn. Sci Rep 2021; 11:18094. [PMID: 34508162 PMCID: PMC8433376 DOI: 10.1038/s41598-021-97732-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Severe burns result in cardiovascular dysfunction, but responses in the peripheral vasculature are unclear. We hypothesize that severe burns disturb arterial contractility through acute changes in adrenergic and cholinergic receptor function. To address this, we investigated the changes in carotid artery contractility and relaxation following a severe burn. Thirty-four adult Sprague–Dawley male rats received a 40% total body surface area (TBSA) scald burn and fluid resuscitation using the Parkland formula. Control animals received sham burn procedure. Animals were serially euthanized between 6 h and 14 days after burn and endothelium-intact common carotid arteries were used for ex vivo force/relaxation measurements. At 6 h after burn, carotid arteries from burned animals demonstrated a > 50% decrease in cumulative dose-responses to norepinephrine (p < 0.05) and to 10−7 M angiotensin II (p < 0.05). Notably, pre-constricted carotid arteries also demonstrated reduced relaxation responses to acetylcholine (p < 0.05) 6 h after burn, but not to sodium nitroprusside. Histologic examination of cross-sectional planes revealed significant increases in carotid artery wall thickness in burned rats at 6 h versus 3 days, with increased collagen expression in tunica media at 3 days (p < 0.05). Carotid artery dysfunction occurs within 6 h after severe burn, demonstrating decreased sensitivity to adrenergic- and angiotensin II-induced vasoconstriction and acetylcholine-induced relaxation.
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Affiliation(s)
- Kevin DeSpain
- Department of Kinesiology, University of Texas Arlington, Arlington, TX, USA
| | | | - Ryan Huebinger
- Department of Pediatrics, UT Southwestern Medical Center, Dallas, TX, USA
| | - Xiaofu Wang
- Department of Surgery, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555-0644, USA
| | - Jayson W Jay
- Department of Surgery, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555-0644, USA
| | - Ravi S Radhakrishnan
- Department of Surgery, Shriners Hospitals for Children - Galveston, Galveston, TX, USA.,Department of Surgery, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555-0644, USA
| | - Steven E Wolf
- Department of Surgery, Shriners Hospitals for Children - Galveston, Galveston, TX, USA.,Department of Surgery, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555-0644, USA
| | - Juquan Song
- Department of Surgery, University of Texas Medical Branch, 301 University Blvd., Galveston, TX, 77555-0644, USA.
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