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González-Muniesa P, Garcia-Gerique L, Quintero P, Arriaza S, Lopez-Pascual A, Martinez JA. Effects of Hyperoxia on Oxygen-Related Inflammation with a Focus on Obesity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:8957827. [PMID: 26697142 PMCID: PMC4678090 DOI: 10.1155/2016/8957827] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 07/29/2015] [Accepted: 08/19/2015] [Indexed: 12/22/2022]
Abstract
Several studies have shown a pathological oxygenation (hypoxia/hyperoxia) on the adipose tissue in obese subjects. Additionally, the excess of body weight is often accompanied by a state of chronic low-degree inflammation. The inflammation phenomenon is a complex biological response mounted by tissues to combat injurious stimuli in order to maintain cell homeostasis. Furthermore, it is believed that the abnormal oxygen partial pressure occurring in adipose tissue is involved in triggering inflammatory processes. In this context, oxygen is used in modern medicine as a treatment for several diseases with inflammatory components. Thus, hyperbaric oxygenation has demonstrated beneficial effects, apart from improving local tissue oxygenation, on promoting angiogenesis, wound healing, providing neuroprotection, facilitating glucose uptake, appetite, and others. Nevertheless, an excessive hyperoxia exposure can lead to deleterious effects such as oxidative stress, pulmonary edema, and maybe inflammation. Interestingly, some of these favorable outcomes occur under high and low oxygen concentrations. Hereby, we review a potential therapeutic approach to the management of obesity as well as the oxygen-related inflammation accompanying expanded adipose tissue, based on elevated oxygen concentrations. To conclude, we highlight at the end of this review some areas that need further clarification.
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Affiliation(s)
- Pedro González-Muniesa
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
- Navarra's Health Research Institute (IDISNA), 31008 Pamplona, Spain
| | - Laura Garcia-Gerique
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - Pablo Quintero
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Libertador Bernardo O'Higgins 340, Santiago, Chile
| | - Suyen Arriaza
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - Amaya Lopez-Pascual
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
| | - J. Alfredo Martinez
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, Irunlarrea 1, 31008 Pamplona, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
- Navarra's Health Research Institute (IDISNA), 31008 Pamplona, Spain
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Golomb E, Matza D, Cummings CA, Schwalb H, Kodavanti UP, Schneider A, Houminer E, Korach A, Nyska A, Shapira OM. Myocardial Mitochondrial Injury Induced by Pulmonary Exposure to Particulate Matter in Rats. Toxicol Pathol 2012; 40:779-88. [DOI: 10.1177/0192623312441409] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Exposure to air pollution has been associated with acute myocardial ischemia, impaired myocardrial function, and ST-segment depression. Particulate matter (PM)–associated metals, especially vanadium and nickel, have been implicated in observed cardiovascular impairments. We aimed to assess the effect of single intratracheal pulmonary exposure to vanadium-rich respirable oil combustion PM (HP-10) on the intrinsic myocardial ischemic tolerance and mitochondrial integrity in rats. The authors subjected isolated heart tissue slices derived from saline or PM-exposed rats to low glucose low oxygen induced ischemia followed by oxygenated condition with glucose supplementation. Mitochondrial structural integrity was determined by TEM (transmission electron microscopy) and functionality by the 3-(4, 5 dimethylthiazol-2yl)-2, 5 diphenyltetrazolium bromide (MTT) assay. Rats exposed to PM exhibited no apparent inhibition of mitochondrial dehydrogenase activity in oxygenated conditions at 24 or 48 hr post–PM exposure. However, in conditions of simulated ischemia/reoxygenation, these heart slices showed a delayed but consistent and significant decrease in dehydrogenase activity compared to controls at 48 hr after exposure to PM. Electron microscopy revealed significant myocardial mitochondrial injury upon exposure to PM characterized by mitochondrial swelling and fusion. The authors conclude that exposure to soluble vanadium-rich PM induces mitochondrial functional impairment and structural abnormality, which compromises mitochondrial respiration and results in decreased tolerance to ischemia/reoxygenation in rats.
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Affiliation(s)
- Eliahu Golomb
- Department of Pathology, Shaare Zedek Medical Center, Hebrew University School of Medicine, Jerusalem, Israel
| | - Didi Matza
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | | | - Herzl Schwalb
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Urmila P. Kodavanti
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina, USA
| | - Aviva Schneider
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Esther Houminer
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Amit Korach
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Abraham Nyska
- Department of Pathology, Sackler School of Medicine, Tel Aviv University, Tel-Aviv; and Consultant in Toxicologic Pathology, Timrat, Israel
| | - Oz M. Shapira
- Department of Cardiothoracic Surgery, Cardiovascular and Thoracic Research Center, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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