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Zhang H, Zhang X, Li H, Wang B, Chen P, Meng J. The roles of macrophage migration inhibitory factor in retinal diseases. Neural Regen Res 2024; 19:309-315. [PMID: 37488883 PMCID: PMC10503606 DOI: 10.4103/1673-5374.379020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/07/2023] [Accepted: 04/28/2023] [Indexed: 07/26/2023] Open
Abstract
Macrophage migration inhibitory factor (MIF), a multifunctional cytokine, is secreted by various cells and participates in inflammatory reactions, including innate and adaptive immunity. There are some evidences that MIF is involved in many vitreoretinal diseases. For example, MIF can exacerbate many types of uveitis; measurements of MIF levels can be used to monitor the effectiveness of uveitis treatment. MIF also alleviates trauma-induced and glaucoma-induced optic nerve damage. Furthermore, MIF is critical for retinal/choroidal neovascularization, especially complex neovascularization. MIF exacerbates retinal degeneration; thus, anti-MIF therapy may help to mitigate retinal degeneration. MIF protects uveal melanoma from attacks by natural killer cells. The mechanism underlying the effects of MIF in these diseases has been demonstrated: it binds to cluster of differentiation 74, inhibits the c-Jun N-terminal kinase pathway, and triggers mitogen-activated protein kinases, extracellular signal-regulated kinase-1/2, and the phosphoinositide-3-kinase/Akt pathway. MIF also upregulates Toll-like receptor 4 and activates the nuclear factor kappa-B signaling pathway. This review focuses on the structure and function of MIF and its receptors, including the effects of MIF on uveal inflammation, retinal degeneration, optic neuropathy, retinal/choroidal neovascularization, and uveal melanoma.
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Affiliation(s)
- Hongbing Zhang
- Shaanxi Institute of Ophthalmology, Xi’an, Shaanxi Province, China
- Department of Ophthalmology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
| | - Xianjiao Zhang
- Department of Pathology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
| | - Hongsong Li
- Department of Ophthalmology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
| | - Bing Wang
- Department of Ophthalmology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
| | - Pei Chen
- Department of Ophthalmology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
| | - Jiamin Meng
- Department of Ophthalmology, First Affiliated Hospital of Northwest University, Xi’an, Shaanxi Province, China
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Ferhat M, Mangano K, Mirkina I, Mayer J, Rossmueller G, Schinagl A, Kerschbaumer R, Nicoletti F, Thiele M, Landlinger C. The newly engineered monoclonal antibody ON104, targeting the oxidized Macrophage Migration Inhibitory Factor (oxMIF), ameliorates clinical and histopathological signs of collagen-induced arthritis. Eur J Pharmacol 2023; 956:175997. [PMID: 37579967 DOI: 10.1016/j.ejphar.2023.175997] [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: 05/08/2023] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 08/16/2023]
Abstract
Macrophage Migration Inhibitory Factor (MIF) is a pleiotropic inflammatory cytokine that emerged as a pivotal regulator in the pathogenesis of several autoimmune diseases including rheumatoid arthritis (RA). MIF occurs in two immunologically distinct conformational isoforms, indicated as reduced (redMIF) and oxidized MIF (oxMIF) where the latter exerts disease-related activities. In this study we demonstrate the presence of circulating oxMIF in RA patients and investigate the in vivo effects of an oxMIF-neutralizing antibody in a murine model of RA. By advanced antibody engineering we generated the fully human anti-oxMIF antibody ON104 with abolished effector functions. The therapeutic potential of ON104 was tested in a model of Collagen-Induced Arthritis (CIA) in DBA/1j mice. At disease onset, the mice received ON104 twice a week for three weeks. Clinical symptoms were assessed daily, and histological examinations of the joints were performed at the end of the study. Antibody ON104, specifically targeting human and murine oxMIF, is highly affine and does not elicit effector functions in vitro. The treatment of CIA mice with ON104 profoundly modulated disease progression with marked amelioration of clinical signs of arthritis that was associated with reduced synovial and cartilage damage and reduced F4/80-positive macrophages in the joints. These data prove that oxMIF is a relevant target in a well-known model of human RA and its specific neutralization by the antibody ON104 ameliorates clinical and histological signs of the disease in the so-treated mice. Thus, ON104 represents a new and promising treatment option for RA and possibly other autoimmune diseases.
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Affiliation(s)
- Maroua Ferhat
- OncoOne Research & Development GmbH, Vienna, Austria
| | - Katia Mangano
- University of Catania, Department of Biomedical and Biotechnological Sciences, Catania, Italy
| | - Irina Mirkina
- OncoOne Research & Development GmbH, Vienna, Austria
| | - Julia Mayer
- OncoOne Research & Development GmbH, Vienna, Austria
| | | | | | | | - Ferdinando Nicoletti
- University of Catania, Department of Biomedical and Biotechnological Sciences, Catania, Italy
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Wang L, Yang J, Tan W, Guo Y, Li J, Duan C, Wei G, Chou M. Macrophage migration inhibitory factor MtMIF3 prevents the premature aging of Medicago truncatula nodules. PLANT, CELL & ENVIRONMENT 2023; 46:1004-1017. [PMID: 36515398 DOI: 10.1111/pce.14515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 12/01/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine involved in immune response in animals. However, the role of MIFs in plants such as Medicago truncatula, particularly in symbiotic nitrogen fixation, remains unclear. An investigation of M. truncatula-Sinorhizobium meliloti symbiosis revealed that MtMIF3 was mainly expressed in the nitrogen-fixing zone of the nodules. Silencing MtMIF3 using RNA interference (Ri) technology resulted in increased nodule numbers but higher levels of bacteroid degradation in the infected cells of the nitrogen-fixing zone, suggesting that premature aging was induced in MtMIF3-Ri nodules. In agreement with this conclusion, the activities of nitrogenase, superoxide dismutase and catalase were lower than those in controls, but cysteine proteinase activity was increased in nodulated roots at 28 days postinoculation. In contrast, the overexpression of MtMIF3 inhibited nodule senescence. MtMIF3 is localized in the plasma membrane, nucleus, and cytoplasm, where it interacts with methionine sulfoxide reductase B (MsrB), which is also localized in the chloroplasts of tobacco leaf cells. Taken together, these results suggest that MtMIF3 prevents premature nodule aging and protects against oxidation by interacting with MtMsrB.
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Affiliation(s)
- Li Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Jieyu Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Wenjun Tan
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Yile Guo
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Jiaqi Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Chuntao Duan
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Minxia Chou
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
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Vukićević D, Rovčanin B, Gopčević K, Stanković S, Vučević D, Jorgačević B, Mladenović D, Vesković M, Samardžić J, Ješić R, Radosavljević T. The Role of MIF in Hepatic Function, Oxidative Stress, and Inflammation in Thioacetamide-induced Liver Injury in Mice: Protective Effects of Betaine. Curr Med Chem 2021; 28:3249-3268. [PMID: 33148149 DOI: 10.2174/0929867327666201104151025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 09/25/2020] [Accepted: 09/27/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Macrophage migration inhibitory factor (MIF) is a multipotent cytokine that contributes to the inflammatory response to chemical liver injury. This cytokine exhibits pro- and anti-inflammatory effects depending on the etiology and stage of liver disease. OBJECTIVE Our study aimed to investigate the role of MIF in oxidative stress and inflammation in the liver, and modulatory effects of betaine on MIF in thioacetamide (TAA)-induced chronic hepatic damage in mice. METHODS The experiment was performed on wild type and knockout MIF-/- C57BL/6 mice. They were divided into the following groups: control; Bet-group that received betaine (2% wt/v dissolved in drinking water); MIF-/- mice group; MIF-/-+Bet; TAA-group that received TAA (200 mg/kg b.w.), intraperitoneally, 3x/week/8 weeks); TAA+Bet; MIF-/-+TAA, and MIF-/-+TAA+Bet. In TAA- and Bet-treated groups, animals received the same doses. After eight weeks of treatment, blood samples were collected for biochemical analysis, and liver specimens were prepared for the assessment of parameters of oxidative stress and inflammation. RESULTS In MIF-/-mice, TAA reduced transaminases, γ-glutamyltranspeptidase, bilirubin, malondialdehyde (MDA), oxidative protein products (AOPP), total oxidant status (TOS), C-reactive protein (CRP), IL-6, IFN-γ, and increased thiols and total antioxidant status (TAS). Betaine attenuated the mechanism of MIF and mediated effects in TAA-induced liver injury, reducing transaminases, γ-glutamyltranspeptidase, bilirubin, MDA, AOPP, TOS, CRP, IL-6, IFN-g, and increasing thiols. CONCLUSION MIF is a mediator in hepatotoxic, pro-oxidative, and proinflammatoryeffects of TAA-induced liver injury. MIF-targeted therapy can potentially mitigate oxidative stress and inflammation in the liver, but the exact mechanism of its action requires further investigation. Betaine increases anti-oxidative defense and attenuates hepatotoxic effects of MIF, suggesting that betaine can be used for the prevention and treatment of liver damage.
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Affiliation(s)
- Dušan Vukićević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Branislav Rovčanin
- Center for Endocrine Surgery, Clinical Center of Serbia, Belgrade, Serbia
| | - Kristina Gopčević
- Institute of Chemistry in Medicine "Prof. Dr. Petar Matavulj", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Sanja Stanković
- Centre of Medical Biochemistry, Clinical Centre of Serbia, Belgrade, Serbia
| | - Danijela Vučević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Bojan Jorgačević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dušan Mladenović
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milena Vesković
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Janko Samardžić
- Institute of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Dr. Subotica 9, 11000 Belgrade, Serbia
| | - Rada Ješić
- Institute of Digestive Diseases, Clinical Centre of Serbia, Belgrade, Serbia
| | - Tatjana Radosavljević
- Institute of Pathophysiology "Ljubodrag Buba Mihailovic", Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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Guimarães GR, Almeida PP, de Oliveira Santos L, Rodrigues LP, de Carvalho JL, Boroni M. Hallmarks of Aging in Macrophages: Consequences to Skin Inflammaging. Cells 2021; 10:cells10061323. [PMID: 34073434 PMCID: PMC8228751 DOI: 10.3390/cells10061323] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/22/2021] [Accepted: 05/22/2021] [Indexed: 12/12/2022] Open
Abstract
The skin is our largest organ and the outermost protective barrier. Its aging reflects both intrinsic and extrinsic processes resulting from the constant insults it is exposed to. Aging in the skin is accompanied by specific epigenetic modifications, accumulation of senescent cells, reduced cellular proliferation/tissue renewal, altered extracellular matrix, and a proinflammatory environment favoring undesirable conditions, including disease onset. Macrophages (Mφ) are the most abundant immune cell type in the skin and comprise a group of heterogeneous and plastic cells that are key for skin homeostasis and host defense. However, they have also been implicated in orchestrating chronic inflammation during aging. Since Mφ are related to innate and adaptive immunity, it is possible that age-modified skin Mφ promote adaptive immunity exacerbation and exhaustion, favoring the emergence of proinflammatory pathologies, such as skin cancer. In this review, we will highlight recent findings pertaining to the effects of aging hallmarks over Mφ, supporting the recognition of such cell types as a driving force in skin inflammaging and age-related diseases. We will also present recent research targeting Mφ as potential therapeutic interventions in inflammatory skin disorders and cancer.
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Affiliation(s)
- Gabriela Rapozo Guimarães
- Laboratory of Bioinformatics and Computational Biology, Division of Experimental and Translational Research, Brazilian National Cancer Institute (INCA), Rio de Janeiro 20231-050, Brazil; (G.R.G.); (P.P.A.); (L.d.O.S.)
| | - Palloma Porto Almeida
- Laboratory of Bioinformatics and Computational Biology, Division of Experimental and Translational Research, Brazilian National Cancer Institute (INCA), Rio de Janeiro 20231-050, Brazil; (G.R.G.); (P.P.A.); (L.d.O.S.)
| | - Leandro de Oliveira Santos
- Laboratory of Bioinformatics and Computational Biology, Division of Experimental and Translational Research, Brazilian National Cancer Institute (INCA), Rio de Janeiro 20231-050, Brazil; (G.R.G.); (P.P.A.); (L.d.O.S.)
| | - Leane Perim Rodrigues
- Genomic Sciences and Biotechnology Program, Catholic University of Brasilia, Brasilia 70790-160, Brazil; (L.P.R.); (J.L.d.C.)
| | - Juliana Lott de Carvalho
- Genomic Sciences and Biotechnology Program, Catholic University of Brasilia, Brasilia 70790-160, Brazil; (L.P.R.); (J.L.d.C.)
- Faculty of Medicine, University of Brasilia, Brasilia 70910-900, Brazil
| | - Mariana Boroni
- Laboratory of Bioinformatics and Computational Biology, Division of Experimental and Translational Research, Brazilian National Cancer Institute (INCA), Rio de Janeiro 20231-050, Brazil; (G.R.G.); (P.P.A.); (L.d.O.S.)
- Experimental Medicine Research Cluster (EMRC), University of Campinas (UNICAMP), Campinas 13083-970, Brazil
- Correspondence:
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The Phosphodiesterase Type 5 Inhibitor Sildenafil Improves DNA Stability and Redox Homeostasis in Systemic Sclerosis Fibroblasts Exposed to Reactive Oxygen Species. Antioxidants (Basel) 2020; 9:antiox9090786. [PMID: 32854347 PMCID: PMC7555932 DOI: 10.3390/antiox9090786] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/20/2020] [Accepted: 08/22/2020] [Indexed: 12/11/2022] Open
Abstract
Systemic sclerosis (SSc) is a multi-system connective tissue disease characterized by the increased deposition of extracellular matrix proteins such as collagen and fibronectin. Although the pathogenesis is not completely understood, a number of studies suggest that free radicals could be the major contributors to the disease. Indeed, different studies demonstrated how oxidative stress could contribute to the fibrotic process activation at the level of the skin and visceral organs. Emerging evidences highlight the beneficial effects of sildenafil, a phosphodiesterase type 5 inhibitor (PDE5i), which protects different cell lines from the cell damage induced by reactive oxygen species (ROS). These data make sildenafil a good candidate for therapeutic treatment aimed to protect biological macromolecules against oxidative damage, thus preserving cell viability. The purpose of this study was to evaluate the sensitivity of SSc dermal fibroblasts to an oxidative insult and the ability for sildenafil to prevent/reduce the DNA damage due to ROS action. Additionally, we evaluated the capacity for sildenafil to influence redox homeostasis and cytotoxicity, as well as cell proliferation and cell cycle progression. We demonstrated that SSc fibroblasts have an increased sensitivity to a pro-oxidant environment in comparison to healthy controls. The sildenafil treatment reduced ROS-induced DNA damage, counteracted the negative effects of ROS on cell viability and proliferation, and promoted the activity of specific enzymes involved in redox homeostasis maintenance. To our knowledge, in this report, we demonstrate, for the first time, that sildenafil administration prevents ROS-induced instability in human dermal fibroblasts isolated by SSc patients. These results expand the use of PDE5i as therapeutic agents in SSc by indicating a protective role in tissue damage induced by oxidative insult.
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Aboelenain M, El Domany WB, Eldoumani H, Khalil WA. Antioxidant response element activator, BTZO-1, improves the developmental competence of bovine oocytes. Reprod Domest Anim 2020; 55:1021-1024. [PMID: 32473610 DOI: 10.1111/rda.13733] [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: 04/01/2020] [Accepted: 05/20/2020] [Indexed: 11/28/2022]
Abstract
Increased reactive oxygen species (ROS) generation may disrupt the oocytes function and their competence. In this study, we introduced BTZO-1, a new supplement that can regulate the oxidative stress. Addition of BTZO-1 during IVM of bovine oocytes improved their developmental competence in the term of improvement of blastocyst rates. In addition, the quality of the produced embryos was improved by decreasing the apoptosis level by showing a decreased number of TUNNEL positive cells.
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Affiliation(s)
- Mansour Aboelenain
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.,Department of Genetics, Rutgers University, Piscataway, NJ, USA
| | - Wael B El Domany
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Haitham Eldoumani
- Department of Anatomy, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Wael A Khalil
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
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Melgar-Sánchez LM, García-Ruiz I, Pardo-Marqués V, Agulló-Ortuño MT, Martínez-Galán I. Influence of mineral waters on in vitro proliferation, antioxidant response and cytokine production in a human lung fibroblasts cell line. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2019; 63:1171-1180. [PMID: 31227887 DOI: 10.1007/s00484-019-01730-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
Spa mineral waters are used for the treatment of chronic diseases' symptoms. Anti-inflammatory, analgesic, anti-ageing and tissue repair effects have been attributed to them. This work seeks to improve knowledge about the effect of spa mineral waters on human cells. For this, human lung fibroblasts were treated with mineral waters from Ledesma, Paracuellos and Archena spas, three Spanish health resorts with different water chemical composition. A significant increase of cell proliferation together with an enhanced antioxidant capacity (reactive oxygen and nitrogen species, glutathione levels and superoxide dismutase activity) in mineral water-treated fibroblasts compared to control fibroblasts was observed. Moreover, cytokine profiling revealed an increase in the release of MIF, IL-6, CL-1, CCL-5 and ICAM-1, which are described as mediators in proliferation, wound healing and cell migration processes. In conclusion, our results could be in line with the effects attributed to spa mineral waters in wound healing strategies and oxidative damage protection.
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Affiliation(s)
- Laura María Melgar-Sánchez
- Department of Medical Sciences, Faculty of Medicine, Universidad de Castilla-La Mancha, Calle Almansa 14, 02006, Albacete, Spain
| | - Inmaculada García-Ruiz
- Laboratory of Clinical and Translational Oncology, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Av. de Córdoba s/n, 28041, Madrid, Spain
| | - Virginia Pardo-Marqués
- Laboratory of Clinical and Translational Oncology, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Av. de Córdoba s/n, 28041, Madrid, Spain
| | - María Teresa Agulló-Ortuño
- Laboratory of Clinical and Translational Oncology, Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Av. de Córdoba s/n, 28041, Madrid, Spain
- Department of Nursing, Physiotherapy and Occupational Therapy, School of Nursing and Physiotherapy, Universidad de Castilla-La Mancha, Av. Carlos III s/n,, 45071, Toledo, Spain
| | - Inés Martínez-Galán
- Department of Nursing, Physiotherapy and Occupational Therapy, School of Nursing and Physiotherapy, Universidad de Castilla-La Mancha, Av. Carlos III s/n,, 45071, Toledo, Spain.
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A Hazelnut-Enriched Diet Modulates Oxidative Stress and Inflammation Gene Expression without Weight Gain. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4683723. [PMID: 31354906 PMCID: PMC6637671 DOI: 10.1155/2019/4683723] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/11/2019] [Accepted: 05/02/2019] [Indexed: 12/18/2022]
Abstract
Introduction Inflammation is associated with obesity condition and plays a pivotal role in the onset and progression of many chronic diseases. Among several nutraceutical foods, hazelnuts (Corylus avellana L.) are considered an excellent anti-inflammatory and hypolipidemic food being the second richest source of monounsaturated fatty acids among nuts and because they are rich in vitamins, minerals, and phenolic compounds. Materials and Methods A prospective pilot clinical trial on 24 healthy volunteers who consumed daily, as a snack, 40 g of hazelnuts (261.99 kcal/1096.17 kJ) for six weeks was conducted. Anthropometric measurements, body composition analysis, and nutrigenomic analysis on 12 anti-inflammatory and antioxidant genes were evaluated at baseline (T0) and after hazelnut intervention (T1). Results No significant changes were detected on body composition analysis after hazelnut consumption. Conversely, significant upregulation was detected for SOD1 (2−ΔΔCt = 2.42), CAT (2−ΔΔCt = 2.41), MIF (2−ΔΔCt = 4.12), PPARγ (2−ΔΔCt = 5.89), VDR (2−ΔΔCt = 3.61), MTHFR (2−ΔΔCt = 2.40), and ACE (2−ΔΔCt = 2.16) at the end of the study. Conclusions According to emerging evidences, hazelnut consumption does not lead to weight gain probably due to the improvement of the body's antioxidant capacity by the upregulation of genes implied in oxidant reactions and inflammation.
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Sirisena R, Bellot GL, Puhaindran ME. The Role of Negative-Pressure Wound Therapy in Lower-Limb Reconstruction. Indian J Plast Surg 2019; 52:73-80. [PMID: 31456615 PMCID: PMC6664838 DOI: 10.1055/s-0039-1687922] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Negative-pressure wound therapy (NPWT) has gained increasing popularity among clinicians since its introduction in 1997 as a potential aid to wound healing. Multiple benefits of NPWT have since been proven in studies, including increase in granulation tissue formation, decrease in bacterial load, and the improved survival of flaps. With our increasing use and greater understanding of the tissue and cellular changes that occur in a wound treated with NPWT, our lower-limb reconstructive practice has also evolved. Although controversial, the definite timing for lower-limb reconstruction has stretched from 72 hours to longer than 2 weeks as NPWT contains the wound within a sterile, closed system. It has also shown to decrease the rate of infection in open tibia fractures. Previously, a large number of critical defects of the lower limb would require free tissue transfer for definitive reconstruction. NPWT has reduced this rate by more than 50% and has allowed for less complicated resurfacing procedures to be performed instead.
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Affiliation(s)
- Renita Sirisena
- Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore
| | - Gregory Lucien Bellot
- Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore
| | - Mark Edward Puhaindran
- Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore
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Zhu WY, Jin X, Ma YC, Liu ZB. MIF protects against oxygen-glucose deprivation-induced ototoxicity in HEI-OC1 cochlear cells by enhancement of Akt-Nrf2-HO-1 pathway. Biochem Biophys Res Commun 2018; 503:665-670. [PMID: 29908183 DOI: 10.1016/j.bbrc.2018.06.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 12/17/2022]
Abstract
Ischemia and oxidative stress play crucial roles in the pathophysiology of sudden sensorineural hearing loss (SSNHL). Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine and serves an important role in hearing function. The present study was designed to evaluate the effect of MIF on oxygen-glucose deprivation (OGD)-induced ototoxicity and to elucidate its molecular mechanism. In HEI-OC1 auditory cells, OGD reduced cell viability and increased supernatant lactate dehydrogenase (LDH) and MIF in a time-dependent manner. However, the reduced cell viability exerted by OGD was attenuated by antioxidant and MIF. Luciferase reporter assay demonstrated that MIF could activate NF-E2-related factor 2 (Nrf2), and real-time PCR showed increased mRNA expressions of Nrf2 and two Nrf2-responsive genes, including heme oxygenase-1 (HO-1) and NAD(P)H:quinone oxidoreductase 1 (NQO1). MIF also suppressed oxidative stress induced by OGD, as demonstrated by decreased MDA and increased GSH in cellular supernatant. Inhibition of Nrf2 using siRNA suppressed HO-1 protein expression, the protective effect on OGD-induced injury and decrease in oxidative stress by MIF. Moreover, MIF prevented OGD-induced reduction of Akt1 phosphorylation at Ser473. LY294002, an inhibitor of PI3K/Akt signaling, attenuated the enhancement of Nrf2 protein and protective effect of MIF in OGD-treated cochlear cells. We demonstrate that MIF protects cochlear cells against OGD-induced injury through activation of Akt-Nrf2-HO-1 pathway.
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Affiliation(s)
- Wen-Yan Zhu
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, 223300, Jinagsu Province, China.
| | - Xin Jin
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, 223300, Jinagsu Province, China
| | - Yong-Chi Ma
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, 223300, Jinagsu Province, China
| | - Zhi-Biao Liu
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huaian, 223300, Jinagsu Province, China
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