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Bastug O, Fatih Sonmez M, Ozturk MA, Korkmaz L, Kesici H, Cilenk KT, Halis H, Korkut S, Ozdemir A, Bastug F, Gunes T, Kurtoglu S. Effects of Lycopene in Hyperoxia-Induced Lung Injury in Newborn Rats. INT J VITAM NUTR RES 2019; 88:270-280. [PMID: 31161929 DOI: 10.1024/0300-9831/a000238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The aim of this study was to evaluate the therapeutic effect of lycopene on a hyperoxia-induced lung injury model in rat pups. Full-term rat pups were included in the study 12-24 h after delivery. The pups were separated into 4 groups: normoxia control (NC), hyperoxia control (HC), hyperoxia + lycopene (HL), and normoxia lycopene (NL). The normoxia groups were housed in ambient air, and the hyperoxia groups in > 85% O2. HL and NL groups received 50 mg lycopene in oil/kg body weight/day delivered intraperitoneally (i.p.), the other groups received oil alone. On day 11, the rat pups were sacrificed and their lungs removed. Statistically significant injury was observed in all histological parameters measured (MLI, proliferating cell nuclear antigen (PCNA), and apoptosis) in the HC group (HC vs NC, p = 0.001). This injury could not be reversed with lycopene treatment (HC vs HL, 0.05; NC vs HL, p = 0.001). With hyperoxia, statistically significant decreases were observed in biochemical parameters in terms of SOD, MDA, and IL-6 values (HC vs NC: SOD, p = 0.02; MDA, p = 0.043; IL-6, p = 0.001). The use of lycopene did not provide any improvement in these values (HC vs HL, p > 0.05). Hyperoxia or lycopene had no effect on IL-1β and GPx (p > 0.05). When comparing NC and NL groups, negative effects were observed in the group given lycopene in terms of MLI, PCNA, apoptosis, and IL-6 (all parameters, p = 0.001). We observed that 50 mg lycopene in oil/kg body weight/day given via i.p. had no curative effect on the hyperoxia-induced lung injury in newborn rats and may even induce adverse effects.
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Affiliation(s)
- Osman Bastug
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Mehmet Fatih Sonmez
- 2 Histology and Embryology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | | | - Levent Korkmaz
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Hakan Kesici
- 3 Histology and Embryology, Gaziosmanpaşa University Faculty of Medicine, Tokat, Turkey
| | - Kubra Tugce Cilenk
- 2 Histology and Embryology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Hulya Halis
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Sabriye Korkut
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Ahmet Ozdemir
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Funda Bastug
- 4 Pediatric Nephrology, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - Tamer Gunes
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
| | - Selim Kurtoglu
- 1 Neonatology, Erciyes University Faculty of Medicine, Kayseri, Turkey
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2
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Camarinho R, Garcia PV, Choi H, Rodrigues AS. Overproduction of TNF-α and lung structural remodelling due to chronic exposure to volcanogenic air pollution. CHEMOSPHERE 2019; 222:227-234. [PMID: 30708156 DOI: 10.1016/j.chemosphere.2019.01.138] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/16/2019] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
Volcanogenic air pollution studies and their effects on the respiratory system are still outnumbered by studies regarding the effects of anthropogenic air pollution, representing an unknown risk to human population inhabiting volcanic areas worldwide (either eruptive or non-eruptive areas). This study was carried in the archipelago of the Azores- Portugal, in two areas with active volcanism (Village of Furnas and Village of Ribeira Quente) and a reference site (Rabo de Peixe). The hydrothermal volcanism of Furnas volcanic complex is responsible for the release of 1000 t d-1 of CO2, H2S, the radioactive gas - radon, among others. Besides the gaseous emissions, particulate matter and metals (Hg, Cd, Zn, Al, Ni, etc.) are also released into the environment. We tested a hypothesis whether chronic exposure to volcanogenic air pollution causes lung structural remodelling, in the house mouse, Mus musculus, as a bioindicator species. Histopathological evaluations were performed to assess the amount of macrophages, mononuclear leukocyte infiltrate, pulmonary emphysema, and the production of pro-inflammatory cytokine TNF-α. Also, the percentage of collagen and elastin fibers was calculated. Mice chronically exposed to volcanogenic air pollution presented an increased score in the histopathological evaluations for the amount of macrophages, mononuclear leukocyte infiltrate, pulmonary emphysema and production of TNF-α; and also increased percentages of collagen and elastin. For the first time, we demonstrate that non-eruptive active volcanism has a high potential to cause lung structural remodelling. This study also highlights the Mus musculus as a useful bioindicator for future biomonitoring programs in these type of volcanic environments.
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Affiliation(s)
- R Camarinho
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal; IVAR - Instituto de Vulcanologia e Avaliação de Riscos, University of the Azores, 9501-801, Ponta Delgada, Portugal.
| | - P V Garcia
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal; CE3C - cE3c, Centre for Ecology, Evolution and Environmental Changes /Azorean Biodiversity Group, University of the Azores, 9501-801, Ponta Delgada, Azores, Portugal.
| | - H Choi
- University of Albany - Department of Environmental Health Sciences, University at Albany School of Public Health One University Place, Rm 153, Rensselaer, NY, 12144-3456, USA.
| | - A S Rodrigues
- Faculty of Sciences and Technology, University of the Azores, 9501-801, Ponta Delgada, Portugal; IVAR - Instituto de Vulcanologia e Avaliação de Riscos, University of the Azores, 9501-801, Ponta Delgada, Portugal.
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Prideaux B, Via LE, Zimmerman MD, Eum S, Sarathy J, O'Brien P, Chen C, Kaya F, Weiner DM, Chen PY, Song T, Lee M, Shim TS, Cho JS, Kim W, Cho SN, Olivier KN, Barry CE, Dartois V. The association between sterilizing activity and drug distribution into tuberculosis lesions. Nat Med 2015; 21:1223-7. [PMID: 26343800 PMCID: PMC4598290 DOI: 10.1038/nm.3937] [Citation(s) in RCA: 337] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 08/06/2015] [Indexed: 12/31/2022]
Abstract
Finding new treatment-shortening antibiotics to improve cure rates and curb the alarming emergence of drug resistance is the major objective of tuberculosis (TB) drug development. Using a MALDI mass spectrometry imaging suite in a biosafety containment facility, we show that the key sterilizing drugs rifampicin and pyrazinamide efficiently penetrate the sites of TB infection in lung lesions. Rifampicin even accumulates in necrotic caseum, a critical lesion site where persisting tubercle bacilli reside1. In contrast, moxifloxacin which is active in vitro against persisters, a sub-population of Mycobacterium tuberculosis that persists in specific niches under drug pressure, and achieved treatment shortening in mice2, does not diffuse well in caseum, concordant with its failure to shorten therapy in recent clinical trials. We also suggest that such differential spatial distribution and kinetics of accumulation in lesions may create temporal and spatial windows of monotherapy in specific niches, allowing the gradual development of multidrug resistant TB. We propose an alternative working model to prioritize new antibiotic regimens based on quantitative and spatial distribution of TB drugs in the major lesion types found in human lungs. The finding that lesion penetration contributes to treatment outcome has wide implications for TB.
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Affiliation(s)
- Brendan Prideaux
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Laura E Via
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Matthew D Zimmerman
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Seokyong Eum
- International Tuberculosis Research Center, Changwon, Republic of Korea
| | - Jansy Sarathy
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Paul O'Brien
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Chao Chen
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Firat Kaya
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Danielle M Weiner
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Pei-Yu Chen
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Taeksun Song
- International Tuberculosis Research Center, Changwon, Republic of Korea
| | - Myungsun Lee
- International Tuberculosis Research Center, Changwon, Republic of Korea
| | | | - Jeong Su Cho
- Pusan National University Hospital, Pusan, Republic of Korea
| | - Wooshik Kim
- National Medical Center, Seoul, Republic of Korea
| | - Sang Nae Cho
- Department of Microbiology and Institute of Immunology and Immunological Disease, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kenneth N Olivier
- Pulmonary Clinical Medicine, Cardiovascular Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Clifton E Barry
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.,Institute of Infectious Disease and Molecular Medicine, Department of Clinical Laboratory Sciences, University of Cape Town, Cape Town, South Africa
| | - Véronique Dartois
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
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Camarinho R, Garcia PV, Rodrigues AS. Chronic exposure to volcanogenic air pollution as cause of lung injury. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2013; 181:24-30. [PMID: 23800425 DOI: 10.1016/j.envpol.2013.05.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 05/24/2013] [Accepted: 05/30/2013] [Indexed: 06/02/2023]
Abstract
Few studies were made regarding the pulmonary effects of exposure to volcanogenic air pollution, representing an unrecognized health risk for humans inhabiting non-eruptive volcanically active areas (10% of world human population). We tested the hypothesis whether chronic exposure to air pollution of volcanogenic origin causes lung injury, using wild mice (Mus musculus) as model. Lung injury was determined using histological morphometric parameters, inflammatory status (InfS) and the amount of black silver deposits (BSD). Mice exposed to volcanogenic air pollution have decreased percentage of alveolar space, alveolar perimeter and lung structural functionality (LSF) ratio and, increased alveolar septal thickness, amount of BSD and InfS. For the first time it is evidenced that non-eruptive active volcanism has a high potential to cause lung injury. This study also highlights the usefulness of M. musculus as bioindicator species, and of the developed biomarker of effect LSF ratio, for future animal and/or human biomonitoring programs.
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Affiliation(s)
- Ricardo Camarinho
- CVARG, Centro de Vulcanologia e Avaliação de Riscos Geológicos, Ponta Delgada, Portugal.
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Sewing ACP, Kantores C, Ivanovska J, Lee AH, Masood A, Jain A, McNamara PJ, Tanswell AK, Jankov RP. Therapeutic hypercapnia prevents bleomycin-induced pulmonary hypertension in neonatal rats by limiting macrophage-derived tumor necrosis factor-α. Am J Physiol Lung Cell Mol Physiol 2012; 303:L75-87. [DOI: 10.1152/ajplung.00072.2012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Bleomycin-induced lung injury is characterized in the neonatal rat by inflammation, arrested lung growth, and pulmonary hypertension (PHT), as observed in human infants with severe bronchopulmonary dysplasia. Inhalation of CO2 (therapeutic hypercapnia) has been described to limit cytokine production and to have anti-inflammatory effects on the injured lung; we therefore hypothesized that therapeutic hypercapnia would prevent bleomycin-induced lung injury. Spontaneously breathing rat pups were treated with bleomycin (1 mg/kg/d ip) or saline vehicle from postnatal days 1–14 while being continuously exposed to 5% CO2 (PaCO2 elevated by 15–20 mmHg), 7% CO2 (PaCO2 elevated by 35 mmHg), or normocapnia. Bleomycin-treated animals exposed to 7%, but not 5%, CO2, had significantly attenuated lung tissue macrophage influx and PHT, as evidenced by normalized pulmonary vascular resistance and right ventricular systolic function, decreased right ventricular hypertrophy, and attenuated remodeling of pulmonary resistance arteries. The level of CO2 neither prevented increased tissue neutrophil influx nor led to improvements in decreased lung weight, septal thinning, impaired alveolarization, or decreased numbers of peripheral arteries. Bleomycin led to increased expression and content of lung tumor necrosis factor (TNF)-α, which was found to colocalize with tissue macrophages and to be attenuated by exposure to 7% CO2. Inhibition of TNF-α signaling with the soluble TNF-2 receptor etanercept (0.4 mg/kg ip from days 1–14 on alternate days) prevented bleomycin-induced PHT without decreasing tissue macrophages and, similar to CO2, had no effect on arrested alveolar development. Our findings are consistent with a preventive effect of therapeutic hypercapnia with 7% CO2 on bleomycin-induced PHT via attenuation of macrophage-derived TNF-α. Neither tissue macrophages nor TNF-α appeared to contribute to arrested lung development induced by bleomycin. That 7% CO2 normalized pulmonary vascular resistance and right ventricular function without improving inhibited airway and vascular development suggests that vascular hypoplasia does not contribute significantly to functional changes of PHT in this model.
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Affiliation(s)
- A. Charlotte P. Sewing
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Crystal Kantores
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Julijana Ivanovska
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Alvin H. Lee
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Azhar Masood
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Division of Neonatology, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Amish Jain
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Division of Neonatology, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Patrick J. McNamara
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Division of Neonatology, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - A. Keith Tanswell
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Division of Neonatology, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Robert P. Jankov
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Heart and Stroke Richard Lewar Centre of Excellence, University of Toronto, Toronto, Ontario, Canada
- Division of Neonatology, Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
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Fuchs H, Mendler MR, Scharnbeck D, Ebsen M, Hummler HD. Very low tidal volume ventilation with associated hypercapnia--effects on lung injury in a model for acute respiratory distress syndrome. PLoS One 2011; 6:e23816. [PMID: 21886825 PMCID: PMC3158784 DOI: 10.1371/journal.pone.0023816] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 07/27/2011] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Ventilation using low tidal volumes with permission of hypercapnia is recommended to protect the lung in acute respiratory distress syndrome. However, the most lung protective tidal volume in association with hypercapnia is unknown. The aim of this study was to assess the effects of different tidal volumes with associated hypercapnia on lung injury and gas exchange in a model for acute respiratory distress syndrome. METHODOLOGY/PRINCIPAL FINDINGS In this randomized controlled experiment sixty-four surfactant-depleted rabbits were exposed to 6 hours of mechanical ventilation with the following targets: Group 1: tidal volume = 8-10 ml/kg/PaCO(2) = 40 mm Hg; Group 2: tidal volume = 4-5 ml/kg/PaCO(2) = 80 mm Hg; Group 3: tidal volume = 3-4 ml/kg/PaCO(2) = 120 mm Hg; Group 4: tidal volume = 2-3 ml/kg/PaCO(2) = 160 mm Hg. Decreased wet-dry weight ratios of the lungs, lower histological lung injury scores and higher PaO(2) were found in all low tidal volume/hypercapnia groups (group 2, 3, 4) as compared to the group with conventional tidal volume/normocapnia (group 1). The reduction of the tidal volume below 4-5 ml/kg did not enhance lung protection. However, oxygenation and lung protection were maintained at extremely low tidal volumes in association with very severe hypercapnia and no adverse hemodynamic effects were observed with this strategy. CONCLUSION Ventilation with low tidal volumes and associated hypercapnia was lung protective. A tidal volume below 4-5 ml/kg/PaCO(2) 80 mm Hg with concomitant more severe hypercapnic acidosis did not increase lung protection in this surfactant deficiency model. However, even at extremely low tidal volumes in association with severe hypercapnia lung protection and oxygenation were maintained.
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Affiliation(s)
- Hans Fuchs
- Division of Neonatology and Pediatric Critical Care, Department of Pediatrics and Adolescent Medicine, Ulm University, Ulm, Germany.
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Therapeutic hypercapnia enhances the inflammatory response to endotoxin in the lung of spontaneously breathing rats*. Crit Care Med 2011; 39:1400-6. [DOI: 10.1097/ccm.0b013e31820ee1f2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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