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Leveque C, Mrakic Sposta S, Theunissen S, Germonpré P, Lambrechts K, Vezzoli A, Bosco G, Lévénez M, Lafère P, Guerrero F, Balestra C. Oxidative Stress Response Kinetics after 60 Minutes at Different (1.4 ATA and 2.5 ATA) Hyperbaric Hyperoxia Exposures. Int J Mol Sci 2023; 24:12361. [PMID: 37569737 PMCID: PMC10418619 DOI: 10.3390/ijms241512361] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/25/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Hyperbaric oxygen therapy (HBOT) is a therapeutical approach based on exposure to pure oxygen in an augmented atmospheric pressure. Although it has been used for years, the exact kinetics of the reactive oxygen species (ROS) between different pressures of hyperbaric oxygen exposure are still not clearly evidenced. In this study, the metabolic responses of hyperbaric hyperoxia exposures for 1 h at 1.4 and 2.5 ATA were investigated. Fourteen healthy non-smoking subjects (2 females and 12 males, age: 37.3 ± 12.7 years old (mean ± SD), height: 176.3 ± 9.9 cm, and weight: 75.8 ± 17.7 kg) volunteered for this study. Blood samples were taken before and at 30 min, 2 h, 24 h, and 48 h after a 1 h hyperbaric hyperoxic exposure. The level of oxidation was evaluated by the rate of ROS production, nitric oxide metabolites (NOx), and the levels of isoprostane. Antioxidant reactions were assessed through measuring superoxide dismutase (SOD), catalase (CAT), cysteinylglycine, and glutathione (GSH). The inflammatory response was measured using interleukine-6, neopterin, and creatinine. A short (60 min) period of mild (1.4 ATA) and high (2.5 ATA) hyperbaric hyperoxia leads to a similar significant increase in the production of ROS and antioxidant reactions. Immunomodulation and inflammatory responses, on the contrary, respond proportionally to the hyperbaric oxygen dose. Further research is warranted on the dose and the inter-dose recovery time to optimize the potential therapeutic benefits of this promising intervention.
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Affiliation(s)
- Clément Leveque
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
- Laboratoire ORPHY, Université de Bretagne Occidentale, UFR Sciences et Techniques, 6 Avenue Le Gorgeu, 93837 Brest, France
| | - Simona Mrakic Sposta
- Institute of Clinical Physiology, National Research Council (CNR), 20162 Milan, Italy
| | - Sigrid Theunissen
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
| | - Peter Germonpré
- DAN Europe Research Division (Roseto-Brussels), 1160 Brussels, Belgium
- Hyperbaric Centre, Queen Astrid Military Hospital, 1120 Brussels, Belgium
| | - Kate Lambrechts
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
| | - Alessandra Vezzoli
- Institute of Clinical Physiology, National Research Council (CNR), 20162 Milan, Italy
| | - Gerardo Bosco
- Environmental Physiology & Medicine Lab, Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| | - Morgan Lévénez
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
| | - Pierre Lafère
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
- DAN Europe Research Division (Roseto-Brussels), 1160 Brussels, Belgium
| | - François Guerrero
- Laboratoire ORPHY, Université de Bretagne Occidentale, UFR Sciences et Techniques, 6 Avenue Le Gorgeu, 93837 Brest, France
| | - Costantino Balestra
- Environmental, Occupational, Aging (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), 1160 Brussels, Belgium
- DAN Europe Research Division (Roseto-Brussels), 1160 Brussels, Belgium
- Anatomical Research and Clinical Studies, Vrije Universiteit Brussels (VUB), 1090 Brussels, Belgium
- Physical Activity Teaching Unit, Motor Sciences Department, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
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The effect of balanities aeqyptiaca defatted protein meal and protein concentrate supplemented diet on biochemical and molecular stability of diabetic wister albino rat. Biomed Pharmacother 2022; 153:113510. [DOI: 10.1016/j.biopha.2022.113510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/27/2022] [Accepted: 07/30/2022] [Indexed: 11/17/2022] Open
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The Effects of Hyperbaric Oxygenation on Oxidative Stress, Inflammation and Angiogenesis. Biomolecules 2021; 11:biom11081210. [PMID: 34439876 PMCID: PMC8394403 DOI: 10.3390/biom11081210] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/30/2021] [Accepted: 08/09/2021] [Indexed: 02/06/2023] Open
Abstract
Hyperbaric oxygen therapy (HBOT) is commonly used as treatment in several diseases, such as non-healing chronic wounds, late radiation injuries and carbon monoxide poisoning. Ongoing research into HBOT has shown that preconditioning for surgery is a potential new treatment application, which may reduce complication rates and hospital stay. In this review, the effect of HBOT on oxidative stress, inflammation and angiogenesis is investigated to better understand the potential mechanisms underlying preconditioning for surgery using HBOT. A systematic search was conducted to retrieve studies measuring markers of oxidative stress, inflammation, or angiogenesis in humans. Analysis of the included studies showed that HBOT-induced oxidative stress reduces the concentrations of pro-inflammatory acute phase proteins, interleukins and cytokines and increases growth factors and other pro-angiogenesis cytokines. Several articles only noted this surge after the first HBOT session or for a short duration after each session. The anti-inflammatory status following HBOT may be mediated by hyperoxia interfering with NF-κB and IκBα. Further research into the effect of HBOT on inflammation and angiogenesis is needed to determine the implications of these findings for clinical practice.
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Tranfo G, Paci E, Carrieri M, Marchetti E, Sisto R, Gherardi M, Costabile F, Bauleo L, Ancona C, Pigini D. Levels of Urinary Biomarkers of Oxidatively Generated Damage to DNA and RNA in Different Groups of Workers Compared to General Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16162995. [PMID: 31434269 PMCID: PMC6719150 DOI: 10.3390/ijerph16162995] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/08/2019] [Accepted: 08/16/2019] [Indexed: 12/12/2022]
Abstract
(1) Background: The products of guanine oxidation in DNA and RNA excreted in urine are 8-oxo-7,8-dihydroguanine (8-oxoGua), 8-oxo-7,8-dihydroguanosine (8-oxoGuo), and 8-oxo-7,8-dihydro-2’-deoxyguanosine (8-oxodGuo). Despite intra and inter-individual variability, it is possible to identify situations that significantly increase the levels of these compounds when comparing urinary concentrations of some workers to those of the general population. (2) Methods: urines from gasoline pump attendants (58 from Saudi Arabia and 102 from Italy), 24 workers of a fiberglass reinforced plastics plant, 17 painters and 6 divers were analyzed by HPLC/MS-MS. To test the individual variability, two subjects provided daily samples for one month, and 132 urine samples from the general population were analyzed. (3) Results: We summarized the results for each biomarker, and found the following were statistically higher than in the general population: 8-oxoGua in fiberglass and Italian gasoline workers; 8-oxodGuo in fiberglass and both Saudi Arabian and Italian gasoline workers; 8-oxoGuo in fiberglass workers, both Saudi Arabian and Italian gasoline workers, and painters after the working shift. (4) Conclusions: these results confirm that both 8-oxodGuo and 8-oxoGuo are valuable biomarkers for occupational exposures to dangerous chemicals and seem to suggest that 8-oxoGuo, related to RNA oxidation, is a suitable biomarker to evaluate short term, reversible effects of occupational exposures even within the health-based limit values.
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Affiliation(s)
- Giovanna Tranfo
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy.
| | - Enrico Paci
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Mariella Carrieri
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, via Giustiniani 2, 35128 Padova, Italy
| | - Enrico Marchetti
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Renata Sisto
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Monica Gherardi
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Francesca Costabile
- CNR-ISAC-Italian National Research Council, Institute of Atmospheric Science and Climate, via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Lisa Bauleo
- Department of Epidemiology, Lazio Regional Health Service, Via Cristoforo Colombo 112, 00147 Rome, Italy
| | - Carla Ancona
- Department of Epidemiology, Lazio Regional Health Service, Via Cristoforo Colombo 112, 00147 Rome, Italy
| | - Daniela Pigini
- Department of Occupational Medicine, Epidemiology, Occupational and Environmental Hygiene, INAIL Research, via Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
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The Effects of Hyperbaric Oxygen at Different Pressures on Oxidative Stress and Antioxidant Status in Rats. ACTA ACUST UNITED AC 2019; 55:medicina55050205. [PMID: 31137620 PMCID: PMC6572368 DOI: 10.3390/medicina55050205] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/24/2019] [Accepted: 05/21/2019] [Indexed: 02/07/2023]
Abstract
Background: The optimal use of oxygen at greater than atmospheric pressures in any operational or therapeutic application (hyperbaric oxygen, HBO2) requires awareness of the fact that the beneficial effects of oxygen coexist with toxic effects depending on the pressure and duration of exposure. In this study, we aimed to investigate the effect of HBO2 therapy on oxidative stress and antioxidant status in commonly used protocol for acute HBO2 indications, such as carbon monoxide intoxication, central retinal artery occlusion, crush injury, gas gangrene, and to compare it with normobaric oxygen (NBO2) in healthy rats. Materials and Methods: Fifty-six male, young adult Wistar albino rats were randomly divided into seven groups and named as Group I through Group VII. Plasma malondialdehyde (MDA), superoxide dismutase (SOD), and erythrocyte glutathione (GSH) levels in control group were compared to the levels in other groups. Results: The increases in MDA levels and the decrease in SOD activities were statistically significant in HBO2 groups at the end of the first 24 h when compared to the control group, and the significant decrease in erythrocyte GSH level was only at 2.4 atmospheres absolute. Conclusions: The present study showed that pressure and frequency of exposure are important factors to consider when investigating HBO2-induced oxidative stress and antioxidant response.
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Park SH, Park SJ, Shin MS, Kim CK. The effects of low-pressure hyperbaric oxygen treatment before and after maximal exercise on lactate concentration, heart rate recovery, and antioxidant capacity. J Exerc Rehabil 2018; 14:980-984. [PMID: 30656158 PMCID: PMC6323322 DOI: 10.12965/jer.1836468.234] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 10/27/2018] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to investigate the effects of low-pressure hyperbaric oxygen (HBO) treatment before and after maximal exercise on lactate concentration and heart rate and antioxidant capacity. Ten healthy male college students were recruited from amateur soccer players. Subjects were performed a maximal exercise 3 times at intervals of at least 7 days according to the treatment method (control, pretreatment, posttreatment). Lactate concentration, heart rate, and antioxidant capacity were measured before, post, and after recovery 30 min of maximal exercise. The lactate concentration and heart rate of recovery 30 min was significantly lower in the low-pressure HBO treated group after the maximal exercise compared with the control group and the low-pressure HBO treated group before maximal exercise, and it could affect the removal of the fatigue substance caused by the maximal exercise. These results suggest that the low-pressure HBO treatment which is a new possibility for recovery of peripheral fatigue.
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Affiliation(s)
- Si-Hwa Park
- School of Global Sport Studies, Korea University, Sejong, Korea
| | - Sung-Jin Park
- School of Global Sport Studies, Korea University, Sejong, Korea
| | - Mal-Soon Shin
- School of Global Sport Studies, Korea University, Sejong, Korea
| | - Chang-Kook Kim
- School of Global Sport Studies, Korea University, Sejong, Korea
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Yu J, Yu Q, Liu Y, Zhang R, Xue L. Hydrogen gas alleviates oxygen toxicity by reducing hydroxyl radical levels in PC12 cells. PLoS One 2017; 12:e0173645. [PMID: 28362819 PMCID: PMC5375132 DOI: 10.1371/journal.pone.0173645] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 02/22/2017] [Indexed: 12/19/2022] Open
Abstract
Hyperbaric oxygen (HBO) therapy through breathing oxygen at the pressure of above 1 atmosphere absolute (ATA) is useful for varieties of clinical conditions, especially hypoxic-ischemic diseases. Because of generation of reactive oxygen species (ROS), breathing oxygen gas at high pressures can cause oxygen toxicity in the central nervous system, leading to multiple neurological dysfunction, which limits the use of HBO therapy. Studies have shown that Hydrogen gas (H2) can diminish oxidative stress and effectively reduce active ROS associated with diseases. However, the effect of H2 on ROS generated from HBO therapy remains unclear. In this study, we investigated the effect of H2 on ROS during HBO therapy using PC12 cells. PC12 cells cultured in medium were exposed to oxygen gas or mixed oxygen gas and H2 at 1 ATA or 5 ATA. Cells viability and oxidation products and ROS were determined. The data showed that H2 promoted the cell viability and inhibited the damage in the cell and mitochondria membrane, reduced the levels of lipid peroxidation and DNA oxidation, and selectively decreased the levels of •OH but not disturbing the levels of O2•-, H2O2, or NO• in PC12 cells during HBO therapy. These results indicated that H2 effectively reduced •OH, protected cells against oxygen toxicity resulting from HBO therapy, and had no effect on other ROS. Our data supported that H2 could be potentially used as an antioxidant during HBO therapy.
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Affiliation(s)
- Junchao Yu
- Department of Hyperbaric Oxygenation, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Qiuhong Yu
- Department of Hyperbaric Oxygenation, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yaling Liu
- Department of Hyperbaric Oxygenation, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ruiyun Zhang
- Department of Neurology, Civil Aviation General Hospital, Beijing, China
| | - Lianbi Xue
- Department of Hyperbaric Oxygenation, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- * E-mail:
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Effects of Exercise Training under Hyperbaric Oxygen on Oxidative Stress Markers and Endurance Performance in Young Soccer Players: A Pilot Study. J Nutr Metab 2016; 2016:5647407. [PMID: 28083148 PMCID: PMC5204103 DOI: 10.1155/2016/5647407] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/24/2016] [Accepted: 10/30/2016] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to determine the effects of three weeks of hyperbaric oxygen (HBO2) training on oxidative stress markers and endurance performance in young soccer players. Participants (18.6 ± 1.6 years) were randomized into hyperbaric-hyperoxic (HH) training (n = 6) and normobaric normoxic (NN) training (n = 6) groups. Immediately before and after the 5th, 10th, and 15th training sessions, plasma oxidative stress markers (lipid hydroperoxides and uric acid), plasma antioxidant capacity (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid [TROLOX]), arterial blood gases, acid-base balance, bases excess (BE), and blood lactate analyses were performed. Before and after intervention, maximal oxygen uptake (VO2max) and peak power output (PPO) were determined. Neither HH nor NN experienced significant changes on oxidative stress markers or antioxidant capacity during intervention. VO2max and PPO were improved (moderate effect size) after HH training. The results suggest that HBO2 endurance training does not increase oxidative stress markers and improves endurance performance in young soccer players. Our findings warrant future investigation to corroborate that HBO2 endurance training could be a potential training approach for highly competitive young soccer players.
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Sinan M, Ertan NZ, Mirasoglu B, Yalcin O, Atac N, Toklu AS, Basaran-Kucukgergin C, Baskurt OK. Acute and long-term effects of hyperbaric oxygen therapy on hemorheological parameters in patients with various disorders. Clin Hemorheol Microcirc 2016; 62:79-88. [PMID: 26410860 DOI: 10.3233/ch-151952] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Inhalation of 100% oxygen in a hyperbaric chamber has been accepted as a useful treatment for patients with various pathologies who suffer from hypoxia. The oxidative effects of hyperbaric oxygen (HBO) on RBCs have been investigated in animals but there is not enough data on hemorheological parameters in patients following HBO treatment (HBOT).In this study, we investigated the effect of HBO on hemorheological and haematological parameters during treatment. Red blood cell (RBC) deformability and aggregation, blood and plasma viscosity and superoxide dismutase activity were investigated in patients who underwent HBOT. Hematological parameters were determined by an electronic hematology analyzer. A Laser-assisted Optical Rotational Cell Analyzer (LORCA) was used to measure RBC deformability. RBC aggregation was measured for cells in autologous plasma and for cells resuspended in PBS containing Dextran70 (3% ) by using a Myrenne Aggregometer. A Wells-Brookfield cone/plate rotational viscometer was used for viscosity measurements. According to our results, a significant decrement of the hematocrit and the RBC count was observed after the 20th session of HBOT compared to the baseline, but none of the hemorheological parameters changed significantly. Our results showed that HBOT did not cause any significant changes in hemorheological parameters, thereby not representing any problems for the patients.
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Affiliation(s)
- Mukaddes Sinan
- Istanbul University, Istanbul Faculty of Medicine, Department of Physiology, Capa, Istanbul, Turkey
| | - Nesrin Zeynep Ertan
- Istanbul University, Istanbul Faculty of Medicine, Department of Physiology, Capa, Istanbul, Turkey
| | - Bengusu Mirasoglu
- Istanbul University, Istanbul Faculty of Medicine, Department of Underwater and Hyperbaric Medicine, Capa, Istanbul, Turkey
| | - Ozlem Yalcin
- Koc University, Faculty of Medicine, Department of Physiology, Sariyer, Istanbul, Turkey
| | - Nazlı Atac
- Koc University, Faculty of Medicine, Department of Physiology, Sariyer, Istanbul, Turkey
| | - Akin Savas Toklu
- Istanbul University, Istanbul Faculty of Medicine, Department of Underwater and Hyperbaric Medicine, Capa, Istanbul, Turkey
| | - Canan Basaran-Kucukgergin
- Istanbul University, Istanbul Faculty of Medicine, Department of Biochemistry, Capa, Istanbul, Turkey
| | - Oguz Kerim Baskurt
- Koc University, Faculty of Medicine, Department of Physiology, Sariyer, Istanbul, Turkey
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Aluwong T, Ayo JO, Kpukple A, Oladipo OO. Amelioration of Hyperglycaemia, Oxidative Stress and Dyslipidaemia in Alloxan-Induced Diabetic Wistar Rats Treated with Probiotic and Vitamin C. Nutrients 2016; 8:E151. [PMID: 27164129 PMCID: PMC4882655 DOI: 10.3390/nu8050151] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/16/2016] [Accepted: 03/01/2016] [Indexed: 12/30/2022] Open
Abstract
Clinical and experimental evidence suggests that hyperglycaemia is responsible for the oxidative stress in diabetes mellitus. The study was designed to investigate the comparative effects of probiotic and vitamin C (Vit-C) treatments on hyperglycaemia, oxidative stress and dyslipidaemia in alloxan-induced diabetic rats. Type 1 diabetes (T1DM) was induced in male Wistar rats by a single intraperitoneal (i.p.) injection of alloxan (150 mg/kg). Six groups of the animals received the following treatment regimens for four weeks: (1) Normal saline, per os; (2) alloxan (150 mg/kg, i.p.); (3) alloxan (150 mg/kg) + insulin (4 U/kg, subcutaneously); (4) alloxan (150 mg/kg) + probiotic (4.125 × 10⁶ CFU/100 mL per os); (5) alloxan (150 mg/kg) + Vit-C (100 mg/kg, i.m.); (6) alloxan (150 mg/kg) + probiotic (4.125 × 10⁶ CFU/100 mL per os) + Vit-C (100 mg/kg, intramuscularly). Probiotic + Vit-C decreased (p < 0.05) blood glucose concentration in diabetic treated group, when compared with the untreated diabetic group. Probiotic + Vit-C reduced malondialdehyde concentration, in the serum, brain and kidneys, respectively, but increased the activity of antioxidant enzymes. Probiotic and Vit-C may be more effective than Vit-C alone, in ameliorating hyperglycaemia, oxidative stress and dyslipidaemia in alloxan-induced diabetic rats.
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Affiliation(s)
- Tagang Aluwong
- Department of Veterinary Physiology, Ahmadu Bello University, c/o P.O. Box 216 Samaru, 810006 Zaria, Nigeria.
| | - Joseph O Ayo
- Department of Veterinary Physiology, Ahmadu Bello University, c/o P.O. Box 216 Samaru, 810006 Zaria, Nigeria.
| | - Alkali Kpukple
- Department of Veterinary Physiology, Ahmadu Bello University, c/o P.O. Box 216 Samaru, 810006 Zaria, Nigeria.
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McMonnies CW. Hyperbaric oxygen therapy and the possibility of ocular complications or contraindications. Clin Exp Optom 2014; 98:122-5. [PMID: 25308346 DOI: 10.1111/cxo.12203] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 06/20/2014] [Accepted: 06/21/2014] [Indexed: 11/29/2022] Open
Abstract
Hyperbaric oxygen therapy increases oxygen pressure and the concentration of reactive oxygen species in blood and tissues. Increased oxygen pressure may be beneficial in some diseases, such as in the treatment of diabetic leg ulcers and diabetic retinopathy; however, due to their cytotoxic properties, an excess of reactive oxygen species in tissues and/or deficiencies in antioxidant activity, may contribute to complications of hyperbaric oxygen therapy, such as cataract. This review examines the possibility that increased tissue concentrations of reactive oxygen species may also exacerbate other ocular diseases. For example, reactive oxygen species and deficiencies in antioxidant activities contribute to the pathogenetic processes in keratoconus. Such impact may be exacerbated by exposure to additional reactive oxygen species during hyperbaric oxygen therapy. The senescent eye may be particularly prone to oxidative damage as exemplified by conditions such as macular degeneration and cataract. Because of its high consumption of oxygen, the retina is particularly susceptible to oxidative stress, which plays a major role in retinopathy. For example, under normal conditions age-related macular degeneration involves oxidative stress and death of the retinal pigment epithelial cells. Hyperbaric oxygen therapy may exacerbate these processes. In addition to cataract, age-related macular degeneration and keratoconus, there may be other ocular diseases for which exposure to hyperbaric oxygen therapy-related oxidative stress may be significantly adverse. In all such cases, careful pre-examination and evaluation of the potential risk and benefit from this form of therapy appears to be warranted. Unless it could interfere with the benefits of hyperbaric oxygen therapy, antioxidant dietary supplementation may be indicated in conjunction with any hyperbaric oxygen therapy, when there are co-existing diseases for which oxidative stress could have significantly adverse side effects. Delivery of hyperbaric oxygen therapy may need to be modified or it may even be contraindicated in these cases.
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Affiliation(s)
- Charles W McMonnies
- School of Optometry and Vision Science, University of New South Wales, Kensington, Australia, 2052.
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12
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Gómez-Meda BC, Barros-Hernández A, Guzmán-Bárcenas J, Lemus-Varela MDL, Zamora-Perez AL, Torres-Mendoza BM, Gallegos-Arreola MP, Armendáriz-Borunda J, Zúñiga-González GM. Effects of blue light phototherapy on DNA integrity in preterm newborns. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 141:283-7. [PMID: 25463679 DOI: 10.1016/j.jphotobiol.2014.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 09/17/2014] [Accepted: 09/18/2014] [Indexed: 01/08/2023]
Abstract
In previous studies, exposure to phototherapy, but not oxygen therapy, resulted in damage to genetic material in newborns. The objective of this study was to determine whether micronucleated erythrocytes (MNE) increased in preterm newborns (PNBs) who were exposed to blue light phototherapy lamps. MNE of mature organisms are rapidly eliminated by the spleen, and the presence of MNE has been related to immaturity in some species. Furthermore, PNBs present spontaneous MNE. Blood samples were taken from 17 PNBs at birth to establish baseline frequencies (0 h). After beginning blue light phototherapy, blood samples were obtained from 11 of these PNBs at 24-h intervals for 96 h, after the baseline sample. MNE and micronucleated polychromatic erythrocytes (MNPCE) were counted. The basal values of MNE and MNPCE from 17 PNBs were 0.62 ± 0.48 and 1.52 ± 1.28 (‰), respectively, and no increase in MNE or MNPCE was observed in the serial samples of 11 PNBs exposed to blue light and oxygen therapies, though previous studies reported increases using other types of lamps. In conclusion, under the conditions described no increase in the number of MNE or MNPCE was observed in the peripheral blood of PNBs exposed to blue light phototherapy.
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Affiliation(s)
- Belinda C Gómez-Meda
- Instituto de Biología Molecular en Medicina, Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Angélica Barros-Hernández
- Laboratorio de Mutagénesis, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico; Servicio de Neonatología del Hospital Infantil de México Federico Gómez, México, Distrito Federal, Mexico
| | - José Guzmán-Bárcenas
- Servicio de Neonatología del Hospital Infantil de México Federico Gómez, México, Distrito Federal, Mexico
| | - María de Lourdes Lemus-Varela
- Departamento de Neonatología, Hospital de Pediatría, Unidad Médica de Alta Especialidad, Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico
| | - Ana L Zamora-Perez
- Instituto de Investigación en Odontología, Departamento de Clínicas Odontológicas Integrales, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Blanca M Torres-Mendoza
- División de Neurociencias, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico; Departamento de Clínicas Médicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Martha P Gallegos-Arreola
- Laboratorio de Genética Molecular, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico
| | - Juan Armendáriz-Borunda
- Instituto de Biología Molecular en Medicina, Departamento de Biología Molecular y Genómica, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Guillermo M Zúñiga-González
- Laboratorio de Mutagénesis, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, Jalisco, Mexico.
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Lu Y, Kang J, Bai Y, Zhang Y, Li H, Yang X, Xiang X, Wang X, Huang Y, Su J, Chen Y, Li B, Sun L. Hyperbaric oxygen enlarges the area of brain damage in MCAO rats by blocking autophagy via ERK1/2 activation. Eur J Pharmacol 2014; 728:93-9. [PMID: 24512724 DOI: 10.1016/j.ejphar.2014.01.066] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 01/15/2014] [Accepted: 01/26/2014] [Indexed: 12/29/2022]
Abstract
Hyperbaric oxygen (HBO) is emerging as a therapy for brain ischemia, although its benefits are still debated. The present study aimed to investigate the effect of HBO on brain damage in a rat model of transient focal cerebral ischemia and its underlying mechanism of action. Male Wistar rats, which had suffered 1.5h of transient middle cerebral artery occlusion (tMCAO) and had a Longa's neuron score of 3, were given pure oxygen at 3.0 atm absolute, for 60 min after the third hour of reperfusion. After 24h of reperfusion, rat brains were removed and studied. 2,3,5-triphenyltetrazolium chloride (TTC) and hematoxylin and eosin staining revealed that the infarct ratio in the HBO group increased remarkably when compared with the MCAO group. Up-regulation of extracellular signal-regulated kinase 1/2 (ERK1/2) activation was detected in the HBO group because of reactive oxygen species (ROS) generation. Autophagy appeared to be obstructed in the HBO group. Administration of the ERK1/2 inhibitor U0126 decreased the infarct ratio and improved protein clearance by autophagy in the HBO group. Collectively, these results suggest that HBO enlarges the area of brain damage via reactive oxygen species-induced activation of ERK1/2, which interrupts autophagy flux.
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Affiliation(s)
- Yuxiong Lu
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Jinsong Kang
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Yang Bai
- School of Public Health, Jilin University, Changchun, China
| | - Yu Zhang
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Hongyan Li
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Xiaochun Yang
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Xiyan Xiang
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Xinxue Wang
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | | | - Jing Su
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Ye Chen
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China
| | - Bingjin Li
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China.
| | - Liankun Sun
- Department of Pathophysiology, Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, Jilin 130021, China.
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14
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Guler L, Tavlasoglu M, Yucel O, Guler A, Sahin MA, Kurkluoglu M, Sirin Y, Eken A, Gamsizkan M, Dakak M, Gurkok S, Genc O. Taurine attenuates lung ischemia–reperfusion injury after lung transplantation in rats. J Anesth 2013; 28:347-53. [DOI: 10.1007/s00540-013-1741-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 10/19/2013] [Indexed: 10/26/2022]
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15
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Tarik O, Zeynep O, Hasan D, Mustafa U, Ahmet Y, Mevlit I, Şahin A. Relationship between carbon monoxide intoxication and sister chromatid exchange in lymphocytes. Toxicol Ind Health 2012; 30:896-900. [DOI: 10.1177/0748233712466131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aim: Carbon monoxide (CO) intoxication can be serious and is reported to be the cause of more than half of all fatal intoxications. In this study, we aimed to identify its genotoxic effects based on sister chromatid exchange (SCE). Materials and methods: CO-poisoned patients presented to the emergency services department were identified. Their demographic characteristics, vital findings, laboratory markers, source of CO gas, risk factors, and smoking habits were recorded. The genotoxic effect was assessed using the SCE method. Results: A total of 38 patients were recruited. Their ages ranged from 16–64 years (mean: 29.79 ± 10.92 years). In all the cases, the source of CO gas was a flash heater. The mean carboxyhemoglobin (COHb) level was 25.05 ± 7.15%. Of all the patients, 12 (31.6%) had a the Glasgow Coma Scale (GCS) scores of less than 15, and an important negative correlation was found between the GCS and COHb level ( r = −0.825; p < 0.001). Genotoxicity investigations revealed a significantly higher SCE frequency among patients with high COHb levels compared with that of control subjects with physiological COHb levels ( p < 0.001). However, no correlation between increased SCE frequency and COHb level was found ( r = 0.16; p = 0.34). Conclusion: CO poisoning was shown to result in genotoxicity via an increase in the frequency of SCE. This study is the first to demonstrate a genotoxic effect of CO independent of other chemicals.
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Affiliation(s)
- Ocak Tarik
- Department of Emergency, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Ocak Zeynep
- Department of Emergency, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Dogan Hasan
- Department of Medical Genetics, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Uzkeser Mustafa
- Department of Emergency, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Yesilyurt Ahmet
- Department of Medical Genetics, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Ikbal Mevlit
- Department of Medical Genetics, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Aslan Şahin
- Department of Emergency, School of Medicine, Atatürk University, Erzurum, Turkey
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16
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Üstündağ A, Şimşek K, Ay H, Dündar K, Süzen S, Aydın A, Duydu Y. DNA integrity in patients undergoing hyperbaric oxygen (HBO) therapy. Toxicol In Vitro 2012; 26:1209-15. [DOI: 10.1016/j.tiv.2012.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Revised: 06/11/2012] [Accepted: 06/19/2012] [Indexed: 11/24/2022]
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17
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Micronucleated erythrocytes in preterm newborns exposed to phototherapy and/or oxygentherapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 107:79-83. [DOI: 10.1016/j.jphotobiol.2011.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 11/25/2011] [Accepted: 12/06/2011] [Indexed: 01/23/2023]
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18
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Erdem O, Eken A, Akay C, Arsova-Sarafinovska Z, Matevska N, Suturkova L, Erten K, Özgök Y, Dimovski A, Sayal A, Aydin A. Association of GPX1 polymorphism, GPX activity and prostate cancer risk. Hum Exp Toxicol 2012; 31:24-31. [PMID: 21636625 DOI: 10.1177/0960327111411499] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Prostate cancer is the second most common cancer in men worldwide. Although the aetiology of this disease remains largely unclear, several lines of evidence suggest that oxidative stress plays a role in prostate carcinogenesis. The antioxidant enzyme glutathione peroxidase 1 (GPX1) is part of the enzymatic antioxidant defence, preventing oxidative damage to DNA, proteins and lipids by detoxifying hydrogen and lipid peroxides that may contribute to prostate cancer development. Some studies indicate an association between GPX1 Pro198Leu polymorphism and an increased risk of cancer. The purpose of the present study was to determine the possible association of GPX1 Pro198Leu polymorphism and erythrocyte GPX activity with the risk of developing prostate cancer and to clarify whether erythrocyte GPX activity levels were correlated with the GPX1 Pro198Leu genotype in the Turkish population. The GPX1 Pro198Leu genotype was determined in 33 prostate cancer patients and 91 control individuals. As evident from our results, there was no difference between genotype and/or allele frequencies in prostate cancer patients and controls. No significant difference was found in GPX1 genotype or allele frequency between aggressive and non-aggressive prostate cancer patients. It can be suggested with these findings that individual susceptibility of prostate cancer may be modulated by GPX1 polymorphism, but it needs further studies.
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Affiliation(s)
- O Erdem
- Department of Toxicology, Gulhane Military Medical Academy, Etlik, Ankara, Turkey
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19
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Simsek K, Ay H, Topal T, Ozler M, Uysal B, Ucar E, Acikel CH, Yesilyurt O, Korkmaz A, Oter S, Yildiz S. Long-term exposure to repetitive hyperbaric oxygen results in cumulative oxidative stress in rat lung tissue. Inhal Toxicol 2011; 23:166-72. [PMID: 21391785 DOI: 10.3109/08958378.2011.558528] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Despite its known benefits, hyperbaric oxygen (HBO) is also reported to enhance the production of reactive oxygen species and can cause oxidative stress in several tissues. Previous studies had shown that HBO-induced oxidative stress is directly proportional to both its exposure pressure and duration. Nevertheless, these studies were usually performed with single-session HBO exposure but its clinical use commonly depends on long-term exposure periods. OBJECTIVE To clarify the oxidative effect of long-term repetitive HBO in the lung tissue of rats. MATERIALS AND METHODS Male Sprague-Dawley rats were divided into six study groups exposed to consecutive HBO sessions (2.8 atm/90 min) for 5, 10, 15, 20, 30, and 40 days. Animals were sacrificed 24 h after the last HBO session. An additional control group was set to obtain normal data. Lung malondialdehyde (MDA) and carbonylated protein (PCC) levels were determined as measures of oxidative stress along with the activities of the antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase. RESULTS None of the measured parameters showed any changes among the groups exposed to 5-15 HBO sessions. However, MDA, PCC, and SOD were found to be significantly increased in the 20 to 40 session groups. DISCUSSION AND CONCLUSION These results indicate that repetitive treatment with HBO may cause oxidative stress in critical tissues including the lung. Although HBO-mediated free radicals are accepted to be responsible for the benefits of this therapeutic modality, especially in cases with prolonged exposure, possible injurious effects of supranormal values of bio-oxidative products need to be considered.
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Affiliation(s)
- Kemal Simsek
- Gulhane Military Medical Academy, Department of Undersea and Hyperbaric Medicine, Ankara, Turkey
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20
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Morabito C, Bosco G, Pilla R, Corona C, Mancinelli R, Yang Z, Camporesi EM, Fanò G, Mariggiò MA. Effect of pre-breathing oxygen at different depth on oxidative status and calcium concentration in lymphocytes of scuba divers. Acta Physiol (Oxf) 2011; 202:69-78. [PMID: 21199400 DOI: 10.1111/j.1748-1716.2010.02247.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM In-water pre-breathing oxygen at various depths reduces decompression-induced bubble formation and platelet activation, but it could induce side effects such as oxidative stress. The aim of this study was to investigate the effect of in-water pre-breathing oxygen, at different depths, on the oxidative status and intracellular calcium ([Ca(2+) ]i) of peripheral blood lymphocytes isolated from six divers. They participated in a 4-diving protocol. Two week recovery time was allowed between successive dives. Before diving, all divers, for 20 min, breathed normally at sea level (dive 1), 100% oxygen at sea level (dive 2), 100% oxygen at 6 msw (dive 3), 100% oxygen at 12 msw (dive 4). Then they dived to 30 msw for 20 min with air tank. METHODS Blood samples were collected before and after each dive. Hydrogen peroxide (H(2) O(2) ) levels, catalase (CAT) activity, mRNA expression of CAT, glutathione peroxidase (GPx) and superoxide dismutase (SOD), and the [Ca(2+) ]i in lymphocytes were measured. RESULTS The dives slightly decreased lymphocyte number and significantly reduced lymphocyte H(2) O(2) levels. CAT activity was higher after scuba diving and, dive 3 enhanced mRNA gene expression of CAT, GPx and SOD. The [Ca(2+) ]i was higher after dive 1 and 2 than pre-diving, while was maintained at pre-diving value after dive 3 and 4. CONCLUSION Our results suggest that pre-breathing oxygen, in particular at 12 msw, may enhance lymphocyte antioxidant activity and reduce reactive oxygen species levels. Pre-breathing oxygen in water may also preserve calcium homeostasis, suggesting a protective role in the physiological lymphocyte cell functions.
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Affiliation(s)
- C Morabito
- Department of Neuroscience and Imaging, Aging Research Center, Ce.S.I., 'G. d'Annunzio' University of Chieti-Pescara, Chieti, Italy
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21
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Oh S, Kwon D, Lee HJ, Kim J, Lee E. Role of elevated pressure in TRAIL-induced apoptosis in human lung carcinoma cells. Apoptosis 2011; 15:1517-28. [PMID: 20623193 DOI: 10.1007/s10495-010-0525-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
TNF-related apoptosis-inducing ligand (TRAIL, Apo2L) is a promising anticancer agent with high specificity for cancer cells. Many strategies have been proposed to enhance the sensitivity of cancer cells to TRAIL-mediated apoptosis, including the use of combination treatment with conventional cancer therapies. However, few reports have evaluated the effects of TRAIL in combination with mechanical stress, which can also cause apoptosis of cancer cells. In the present study, we describe a custom-designed culture system that delivers two atmospheres of elevated pressure (EP) by using compressed air, and which enhances the sensitivity of cancer cells to TRAIL-mediated apoptosis. The combination of TRAIL and EP significantly increased apoptosis of human H460 lung cancer cells more than hyperbaric normoxia or normobaric mild hyperoxia. EP-potentiating TRAIL-mediated apoptosis of H460 cells was accompanied by up-regulated death receptor 5 (DR5), activation of caspases, decreased mitochondrial membrane potential, and reactive oxygen species production. We also observed EP-induced sensitization of TRAIL-mediated apoptosis in other cancer cell types. In contrast, human normal cells showed no DNA damage or cell death when exposed to the combined treatment. In a chicken chorioallantoic membrane model, EP enhanced TRAIL-mediated apoptosis of tumors that developed from transplanted H460 cells. Collectively, EP enhanced TRAIL-induced apoptosis of human lung carcinoma cells in vitro and in vivo. These findings suggest that EP is a mechanical and physiological stimulus that might have utility as a sensitizing tool for cancer therapy.
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Affiliation(s)
- Sangnam Oh
- Cellular and Developmental Biology, Division of Biomedical Science, Seoul, Korea
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22
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Yuan J, Handy RD, Moody AJ, Smerdon G, Bryson P. Limited DNA damage in human endothelial cells after hyperbaric oxygen treatment and protection from subsequent hydrogen peroxide exposure. Biochim Biophys Acta Gen Subj 2011; 1810:526-31. [PMID: 21371529 DOI: 10.1016/j.bbagen.2011.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 02/11/2011] [Accepted: 02/23/2011] [Indexed: 11/30/2022]
Abstract
BACKGROUND In vitro studies on hyperbaric oxygen (HBO) therapy suggest that HBO may cause DNA damage, but this has not been evaluated using endothelial cells. METHODS Human umbilical cord endothelial cells (HUVECs) were exposed either to H(2)O(2) or to HBO for 90 min, with or without subsequent H(2)O(2) exposure. Measurements included the comet assay for DNA damage, and reduced and oxidised glutathione levels. RESULTS HUVECs showed sensitivity to H(2)O(2) (EC(50) of 0.2mM for DNA migration). A single 90 min HBO treatment at 2.2 ATA caused a statistically significant (ANOVA, P<0.05) increase of DNA migration in HUVECs to 6.8 ± 0.3% (mean ± SEM, n=8), which returned to normal levels (4.9 ± 0.1%, n=6) after 24h. Further exposure to 0.2mM H(2)O(2) after HBO treatment significantly increased the DNA migration in HBO-treated cells immediately post-treatment; but 24h later the cells showed 22% less DNA damage and higher glutathione than controls. CONCLUSION A single HBO exposure causes limited DNA damage to HUVECs, which repairs quickly. HBO treatment protects against H(2)O(2)-induced DNA damage and involves cellular glutathione. SIGNIFICANCE Endothelial cells are unlikely to be compromised during HBO therapy.
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Affiliation(s)
- J Yuan
- School of Biomedical and Biological Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
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23
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Stiegler P, Matzi V, Pierer E, Hauser O, Schaffellner S, Renner H, Greilberger J, Aigner R, Maier A, Lackner C, Iberer F, Smolle-Jüttner FM, Tscheliessnigg K, Stadlbauer V. Creation of a prevascularized site for cell transplantation in rats. Xenotransplantation 2011; 17:379-90. [PMID: 20955294 DOI: 10.1111/j.1399-3089.2010.00606.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Transplanted cells, especially islet cells, are likely to become apoptotic due to local hypoxia leading to graft dysfunction. Isolated pancreatic islet cells depend on the diffusion of oxygen from the surrounding tissue; therefore, access to sufficient oxygen supply is beneficial, particularly when microcapsules are used for immunoisolation in xenotransplantation. The aim of this study was to create a prevascularized site for cell transplantation in rats and test its effectiveness with microencapsulated HEK293 cells. METHODS The combination of implantation of a foam dressing, vacuum-assisted wound closure (foam+VAC) and hyperbaric oxygenation (HBO) was used in 40 Sprague-Dawley rats. Blood flow and vascular endothelial growth factor (VEGF) levels were determined. Sodium cellulose sulphate (SCS)-microencapsulated HEK293 cells were xenotransplanted into the foam dressing in rats pre-treated with HBO, and angiogenesis and apoptosis were assessed. RESULTS Vessel ingrowth and VEGF levels increased depending on the duration of HBO treatment. The area containing the foam was perfused significantly better in the experimental groups when compared to controls. Only a small amount of apoptosis occurs in SCS-microencapsulated HEK293 cells after xenotransplantation. CONCLUSION As ischemia-damaged cells are likely to undergo cell death or loose functionality due to hypoxia, therefore leading to graft dysfunction, the combination foam+VAC and HBO might be a promising method to create a prevascularized site to achieve better results in xenogeneic cell transplantation.
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Affiliation(s)
- Philipp Stiegler
- Department of Surgery, Division of Transplantation Surgery, Medical University Graz, Graz, Austria.
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24
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Survival and differentiation of neuroectodermal cells with stem cell properties at different oxygen levels. Exp Neurol 2010; 227:136-48. [PMID: 20969864 DOI: 10.1016/j.expneurol.2010.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 10/06/2010] [Accepted: 10/12/2010] [Indexed: 12/15/2022]
Abstract
Freeze-lesioned regions of the forebrain cortex provide adequate environment for growth of non-differentiated neural progenitors, but do not support their neuron formation. Reduced oxygen supply, among numerous factors, was suspected to impair neuronal cell fate commitment. In the present study, proliferation and differentiation of neural stem/progenitor cells were investigated at different oxygen levels both in vitro and in vivo. Low (1% atmospheric) oxygen supply did not affect the in vitro viability and proliferation of stem cells or the transcription of "stemness" genes but impaired the viability of committed neuronal progenitors and the expression of proneural and neuronal genes. Consequently, the rate of in vitro neuron formation was markedly reduced under hypoxic conditions. In vivo, neural stem/progenitor cells survived and proliferated in freeze-lesioned adult mouse forebrains, but did not develop into neurons. Hypoperfusion-caused hypoxia in lesioned cortices was partially corrected by hyperbaric oxygen treatment (HBOT). HBOT, while reduced the rate of cell proliferation at the lesion site, resulted in sporadic neuron formation from implanted neural stem cells. The data indicate that in hypoxic brain areas, neural stem cells survive and proliferate, but neural tissue-type differentiation can not proceed. Oxygenation renders the damaged brain areas more permissive for tissue-type differentiation and may help the integration of neural stem/progenitor cells.
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Eken A, Aydin A, Erdem O, Akay C, Sanal HT, Soykut B, Sayal A, Somuncu I. Cytogenetic analysis of peripheral blood lymphocytes of hospital staff occupationally exposed to low doses of ionizing radiation. Toxicol Ind Health 2010; 26:273-80. [PMID: 20371634 DOI: 10.1177/0748233710365693] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ionizing radiation is known to induce mutations and cell transformations, predominantly by causing single-strand and double-strand DNA breakage, thereby leading to chromosome instability and carcinogenesis. The aim of this study was to evaluate genotoxic effects in hospital staff exposed to low-dose ionizing radiation in comparison with a selected control group, by using the cytokinesis-blocked micronucleus (CBMN) and sister chromatid exchange (SCE) tests in peripheral blood lymphocytes. The study included 40 exposed radiology staff and 30 control subjects. The frequency of micronuclei (MN) was significantly increased in radiation-exposed groups compared with control persons (p < 0.05). The frequency of SCE did not show any significant difference in the exposed individuals in comparison to the controls. Our results showed that low-level chronic occupational exposure to ionizing radiation causes an increase of MN frequency in chromosomes, even though the absorbed doses were below the permissible limits. Our studies indicate that the CBMN assay is considered to be sensitive test in contrast to SCE analysis to evaluate chromosomal damage induced by ionizing radiation.
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Affiliation(s)
- Ayşe Eken
- Department of Toxicology, Gülhane Military Medical Academy, Ankara, Turkey
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26
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Matsunami T, Sato Y, Morishima T, Mano Y, Yukawa M. Enhancement of glucose toxicity by hyperbaric oxygen exposure in diabetic rats. TOHOKU J EXP MED 2009; 216:127-32. [PMID: 18832794 DOI: 10.1620/tjem.216.127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The side effects of hyperbaric oxygen (HBO) treatment, such as oxidative stress and oxygen toxicity, have long been of interest. However, there are no comprehensive studies evaluating such toxic effects in diabetes mellitus (DM). The purpose of this study was to determine the effects of HBO on glucose homeostasis and histological changes in pancreatic beta-cells of experimentally induced diabetic rats. A total of 24 male Wistar rats were randomly divided into 4 groups: 1) Control group, no diabetic induction without HBO treatment; 2) HBO group, exposed to 100% oxygen at 2.8 ATA (atmosphere absolute) for 2 h once daily, for 7 days; 3) DM group, diabetes induced by streptozotocin (STZ) injection; and 4) DM + HBO group, received both STZ injection and HBO exposure. HBO treatment, with clinically recommended pressures and duration of therapy, was started on day 5 after STZ injection, when the blood glucose levels were significantly increased. After the last HBO treatment, the pancreatic tissues were immunostained to measure the areas of insulin immunoreactive beta-cells in the islets of Langerhans. The blood glucose increased significantly following exposure to HBO, with the highest levels achieved in rats, which had been treated with both HBO and diabetic induction. The area populated with insulin immunoreactive beta-cells decreased significantly following diabetic induction and/or HBO exposure, with the smallest area in DM + HBO group. Thus, HBO exposure enhanced the cytotoxic effect of STZ in the beta-cells of the pancreas. HBO should be cautiously employed in diabetic patients.
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Affiliation(s)
- Tokio Matsunami
- Department of Veterinary Medicine, Laboratory of Biomedical Science, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
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27
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Arican E, Gozukirmizi N. Effects of hyperbaric oxygenation on cultured barley embryos. ACTA BIOLOGICA HUNGARICA 2008; 59:453-64. [PMID: 19133501 DOI: 10.1556/abiol.59.2008.4.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Changes in relative water content (RWC), lipid peroxidation, proline and antioxidant system in relation to the tolerance to oxidative stress enzymes mediated high pressure were investigated in Hordeum vulgare L. cv. Tokak. For this purpose, mature embryos cultured on MS media were treated in a hyperbaric oxygenation chamber (approx. 59.06 feets, 2 kp/cm2) with pure oxygen for 60 minutes/day for a growth period of ten days in a plant growth chamber. Constitutive activities of SOD, APOX, GR and POX were higher in hyperbaric oxygenated (HBO) explants, being 96.07%, 28.57%, 77.77% and 54.14% for the 5th days; 95.78%, 40%, 37.5%, and 94.98% for the 10th days of culture, respectively, than in the control plants. Increase in SOD activity was also shown on polyacrilamide gel electrophoresis on the 10th day of application. Proline accumulation was increased in HBO-treated explants both on the 5th days (85.71%) and 10th days (37.14%) of treatment. MDA content was found to be higher in HBO treated explants both on the 5th (53.84%) and 10th (59.83%) days of culture.
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Affiliation(s)
- E Arican
- Department of Molecular Biology and Genetics, Faculty of Science, Istanbul University, 34134, Vezneciler-Istanbul, Turkey.
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Ay H, Topal T, Uysal B, Ozler M, Oter S, Korkmaz A, Dündar K. Time-dependent course of hyperbaric oxygen-induced oxidative effects in rat lung and erythrocytes. Clin Exp Pharmacol Physiol 2007; 34:787-91. [PMID: 17600558 DOI: 10.1111/j.1440-1681.2007.04645.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
1. The oxygen toxicity of hyperbaric oxygen (HBO) treatment has long been of interest. There is an extensive amount of information regarding the role oxidative stress plays after HBO exposure in different tissues, but the question of the persistence of this oxidative effect has not been thoroughly elucidated. 2. The present study was performed to elucidate the persistence of the oxidative effects of HBO on rat lungs and erythrocytes after they had been subjected to 100% oxygen exposure. 3. Rats were divided into five groups. All animals, except those in the control group, were subjected to 100% oxygen for 2 h at 3 ATA ( identical with 300 kPa). Rats were killed at 30, 60, 90 or 120 min after exposure and thiobarbituric acid-reactive substances (TBARS) levels and the activity of superoxide dismutase (SOD) and glutathione peroxidase (GPx) were determined. 4. Thiobarbituric acid-reactive substances levels and SOD and GPx levels were found to be significantly increased in lung tissue up to 60 min after exposure. Superoxide dismutase activity persisted at significantly high values for 90 min after exposure in erythrocytes and the lung. The TBARS levels in erythrocytes were also significantly higher for 60 min, whereas increased GPx activity was observed to persist for only 30 min. 5. The oxidative effect of HBO exposure declines to physiological levels within 90 min at most for erythrocytes and in lung tissue in rats. Further studies should focus on the molecular mechanisms that can be activated during this time interval.
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Affiliation(s)
- Hakan Ay
- Department of Undersea and Hyperbaric Medicine, Gülhane Military Medical Academy, Ankara, Turkey
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