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Ayyadurai VAS, Deonikar P, Fields C. Mechanistic Understanding of D-Glucaric Acid to Support Liver Detoxification Essential to Muscle Health Using a Computational Systems Biology Approach. Nutrients 2023; 15:733. [PMID: 36771439 PMCID: PMC9921405 DOI: 10.3390/nu15030733] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/10/2023] [Accepted: 01/24/2023] [Indexed: 02/04/2023] Open
Abstract
Liver and muscle health are intimately connected. Nutritional strategies that support liver detoxification are beneficial to muscle recovery. Computational-in silico-molecular systems' biology analysis of supplementation of calcium and potassium glucarate salts and their metabolite D-glucaric acid (GA) reveals their positive effect on mitigation of liver detoxification via four specific molecular pathways: (1) ROS production, (2) deconjugation, (3) apoptosis of hepatocytes, and (4) β-glucuronidase synthesis. GA improves liver detoxification by downregulating hepatocyte apoptosis, reducing glucuronide deconjugates levels, reducing ROS production, and inhibiting β-Glucuronidase enzyme that reduces re-absorption of toxins in hepatocytes. Results from this in silico study provide an integrative molecular mechanistic systems explanation for the mitigation of liver toxicity by GA.
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Affiliation(s)
- V. A. Shiva Ayyadurai
- Systems Biology Group, CytoSolve Research Division, CytoSolve, Inc., Cambridge, MA 02138, USA
| | - Prabhakar Deonikar
- Systems Biology Group, CytoSolve Research Division, CytoSolve, Inc., Cambridge, MA 02138, USA
| | - Christine Fields
- Applied Food Sciences Inc., 8708 South Congress Suite 290, Austin, TX 78745, USA
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Butt H, Mehmood A, Ali M, Tasneem S, Tarar MN, Riazuddin S. Vitamin E preconditioning alleviates in vitro thermal stress in cultured human epidermal keratinocytes. Life Sci 2019; 239:116972. [PMID: 31654744 DOI: 10.1016/j.lfs.2019.116972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/04/2019] [Accepted: 10/14/2019] [Indexed: 02/07/2023]
Abstract
AIMS Thermal burns are the most common type of skin injuries. Clinically, the deteriorating thermal wounds have been successfully treated with skin cell sheets, suspensions or bioengineered skin substitutes. After thermal injury, oxidative microenvironment prevalent in the burnt tissue due to imbalance between production of free radicals and antioxidants defense aiding to destruction of cellular or tissue components. However, depleted antioxidant content particularly vitamin E after heat injury challenges efficient regenerative and healing capacity of transplanted cells. Thus, aim of current study was to pretreat human epidermal keratinocytes with vitamin E in order to enhance their survival rate and therapeutic ability under oxidative microenvironment induced by in vitro heat stress. MAIN METHODS Keratinocytes were treated with 100 μM vitamin E at 37 °C for 24 h followed by thermal stress at 51 °C for 10 min. Cell viability and cytotoxicity assays, gene expression analysis and paracrine release analysis were performed. KEY FINDINGS Vitamin E preconditioning resulted in significantly improved cell morphology, enhanced viability and reduced lactate dehydrogenase release. Furthermore, Vitamin E preconditioned cells exposed to thermal stress showed significant down-regulated expression of BAX and up-regulated expression of PCNA, BCL-XL, vascular endothelial growth factor (VEGF), involucrin, transglutaminase 1 (TGM1) and filaggrin (FLG) escorted by increased paracrine release of VEGF, basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF). SIGNIFICANCE Results of the current study suggest that clinical transplantation of vitamin E preconditioned keratinocytes alone or in combination with dermal fibroblasts in skin substitutes for the treatment of thermally injured skin.
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Affiliation(s)
- Hira Butt
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Azra Mehmood
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Muhammad Ali
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Saba Tasneem
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Moazzam N Tarar
- Jinnah Burn & Reconstructive Surgery Centre, Lahore, Pakistan
| | - Sheikh Riazuddin
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan; Jinnah Burn & Reconstructive Surgery Centre, Lahore, Pakistan.
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DeBruler DM, Blackstone BN, McFarland KL, Baumann ME, Supp DM, Bailey JK, Powell HM. Effect of skin graft thickness on scar development in a porcine burn model. Burns 2018; 44:917-930. [PMID: 29661554 DOI: 10.1016/j.burns.2017.11.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/16/2017] [Accepted: 11/20/2017] [Indexed: 12/13/2022]
Abstract
Animal models provide a way to investigate scar therapies in a controlled environment. It is necessary to produce uniform, reproducible scars with high anatomic and biologic similarity to human scars to better evaluate the efficacy of treatment strategies and to develop new treatments. In this study, scar development and maturation were assessed in a porcine full-thickness burn model with immediate excision and split-thickness autograft coverage. Red Duroc pigs were treated with split-thickness autografts of varying thickness: 0.026in. ("thin") or 0.058in. ("thick"). Additionally, the thin skin grafts were meshed and expanded at 1:1.5 or 1:4 to evaluate the role of skin expansion in scar formation. Overall, the burn-excise-autograft model resulted in thick, raised scars. Treatment with thick split-thickness skin grafts resulted in less contraction and reduced scarring as well as improved biomechanics. Thin skin autograft expansion at a 1:4 ratio tended to result in scars that contracted more with increased scar height compared to the 1:1.5 expansion ratio. All treatment groups showed Matrix Metalloproteinase 2 (MMP2) and Transforming Growth Factor β1 (TGF-β1) expression that increased over time and peaked 4 weeks after grafting. Burns treated with thick split-thickness grafts showed decreased expression of pro-inflammatory genes 1 week after grafting, including insulin-like growth factor 1 (IGF-1) and TGF-β1, compared to wounds treated with thin split-thickness grafts. Overall, the burn-excise-autograft model using split-thickness autograft meshed and expanded to 1:1.5 or 1:4, resulted in thick, raised scars similar in appearance and structure to human hypertrophic scars. This model can be used in future studies to study burn treatment outcomes and new therapies.
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Affiliation(s)
- Danielle M DeBruler
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, United States
| | - Britani N Blackstone
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, United States
| | - Kevin L McFarland
- Research Department, Shriners Hospitals for Children, Cincinnati, OH, United States
| | - Molly E Baumann
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, United States
| | - Dorothy M Supp
- Research Department, Shriners Hospitals for Children, Cincinnati, OH, United States; Department of Surgery, University of Cincinnati, Cincinnati, OH, United States
| | - J Kevin Bailey
- Department of Surgery, Division of Critical Care, Trauma and Burns, The Ohio State University, Columbus, OH, United States
| | - Heather M Powell
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, United States; Department of Biomedical Engineering, The Ohio State University, Columbus, OH, United States.
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Butt H, Mehmood A, Ali M, Tasneem S, Anjum MS, Tarar MN, Khan SN, Riazuddin S. Protective role of vitamin E preconditioning of human dermal fibroblasts against thermal stress in vitro. Life Sci 2017; 184:1-9. [PMID: 28684064 DOI: 10.1016/j.lfs.2017.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 06/11/2017] [Accepted: 07/01/2017] [Indexed: 10/19/2022]
Abstract
AIMS Oxidative microenvironment of burnt skin restricts the outcome of cell based therapies of thermal skin injuries. The aim of this study was to precondition human dermal fibroblasts with an antioxidant such as vitamin E to improve their survival and therapeutic abilities in heat induced oxidative in vitro environment. MAIN METHODS Fibroblasts were treated with 100μM vitamin E for 24h at 37°C followed by heat shock for 10min at 51°C in fresh serum free medium. KEY FINDINGS Preconditioning with vitamin E reduced cell injury as demonstrated by decreased expression of annexin-V, cytochrome p450 (CYP450) mediated oxidative reactions, senescence and release of lactate dehydrogenase (LDH) accomplished by down-regulated expression of pro-apoptotic BAX gene. Vitamin E preconditioned cells exhibited remarkable improvement in cell viability, release of paracrine factors such as epidermal growth factor (EGF), basic fibroblast growth factor (bFGF), vascular endothelial growth factor (VEGF), stromal derived factor-1alpha (SDF-1α) and also showed significantly up-regulated levels of PCNA, VEGF, BCL-XL, FGF7, FGF23, FLNβ and Col7α genes presumably through activation of phosphatidylinositol 3-kinase (PI3-K)/Akt pathway. SIGNIFICANCE The results suggest that pretreatment of fibroblasts with vitamin E prior to transplantation in burnt skin speeds up the wound healing process by improving the antioxidant scavenging responses in oxidative environment of transplanted burn wounds.
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Affiliation(s)
- Hira Butt
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Azra Mehmood
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Muhammad Ali
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Saba Tasneem
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Muhammad Sohail Anjum
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Moazzam N Tarar
- Allama Iqbal Medical College, University of Health Sciences, Lahore, Pakistan
| | - Shaheen N Khan
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Sheikh Riazuddin
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan; Allama Iqbal Medical College, University of Health Sciences, Lahore, Pakistan; Shaheed Zulfiqar Ali Bhutto Medical University (SZABMU), Islamabad, Pakistan.
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Burn injury induces skeletal muscle degeneration, inflammatory host response, and oxidative stress in wistar rats. J Burn Care Res 2016; 36:428-33. [PMID: 25933049 DOI: 10.1097/bcr.0000000000000122] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Burn injuries (BIs) result in both local and systemic responses distant from the site of thermal injury, such as skeletal muscle. The purpose of this study was to investigate the expression of cyclooxygenase-2 (COX-2) and hydroxy-2'-deoxyguanosine (8-OHdG) as a result of inflammation and reactive oxygen species production, respectively. A total of 16 male rats were distributed into two groups: control (C) and submitted to BI. The medial part of gastrocnemius muscle formed the specimens, which were stained with hematoxylin and eosin and were evaluated. COX-2 and 8-OHdG expressions were assessed by immunohistochemistry, and cell profile area and density of muscle fibers (number of fibers per square millimeter) were evaluated by morphometric methods. The results revealed inflammatory infiltrate associated with COX-2 immunoexpression in BI-gastrocnemius muscle. Furthermore, a substantial decrease in the muscle cell profile area of BI group was noticed when compared with the control group, whereas the density of muscle fibers was higher in the BI group. 8-OHdG expression in numerous skeletal muscle nuclei was detected in the BI group. In conclusion, the BI group is able to induce skeletal muscle degeneration as a result of systemic host response closely related to reactive oxygen species production and inflammatory process.
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Shiva Ayyadurai VA, Hansen M, Fagan J, Deonikar P. <i>In-Silico</i> Analysis & <i>In-Vivo</i> Results Concur on Glutathione Depletion in Glyphosate Resistant GMO Soy, Advancing a Systems Biology Framework for Safety Assessment of GMOs. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ajps.2016.712149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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