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DeFreitas MJ, Shelton EL, Schmidt AF, Ballengee S, Tian R, Chen P, Sharma M, Levine A, Katz ED, Rojas C, Abitbol CL, Hunter J, Kulandavelu S, Wu S, Young KC, Benny M. Neonatal hyperoxia exposure leads to developmental programming of cardiovascular and renal disease in adult rats. Sci Rep 2024; 14:16742. [PMID: 39033222 DOI: 10.1038/s41598-024-65844-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 06/25/2024] [Indexed: 07/23/2024] Open
Abstract
Premature infants are often exposed to hyperoxia. However, there is limited data regarding the mechanistic underpinnings linking neonatal hyperoxia exposure and its contribution to cardio-renal dysfunction in adults born preterm. Our objective was to determine whether neonatal hyperoxia induces systemic vascular stiffness and cardio-renal dysfunction in adulthood. Newborn rats were randomly assigned to room air (RA) or hyperoxia (85% O2) from postnatal day 1 to 14, then recovered in RA until 1 year of life. Arterial stiffness, cardio-renal histomorphometry, and fibrosis in the aorta, heart, and kidney were assessed. RNA-sequencing (RNA-seq) of the aorta and kidney was also done. Adult rats exposed to neonatal hyperoxia had increased aortic and mesenteric artery stiffness as demonstrated by wire and pressure myography. They also had cardiomyocyte hypertrophy, glomerulomegaly, and tubular injury. Hyperoxia exposure altered the transcriptome profile associated with fibrosis and matrix remodeling in the aorta and kidney. There was also increased TGF-β1 levels and fibrosis in the aorta, left ventricle, and kidney. In conclusion, neonatal hyperoxia exposure was associated with systemic vascular and cardio-renal alterations in 1-year-old rats. Further studies to determine how targeted therapies could reprogram cardio-renal injury after neonatal hyperoxia exposure are indicated.
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Affiliation(s)
- Marissa J DeFreitas
- Department of Pediatrics/Division of Nephrology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Elaine L Shelton
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Augusto F Schmidt
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Sydne Ballengee
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Runxia Tian
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - PingPing Chen
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Mayank Sharma
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Amanda Levine
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Emily Davidovic Katz
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Claudia Rojas
- Department of Pathology, Memorial Healthcare Systems, Hollywood, FL, USA
| | - Carolyn L Abitbol
- Department of Pediatrics/Division of Nephrology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Juanita Hunter
- Department of Pediatrics/Division of Cardiology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Shathiyah Kulandavelu
- Department of Pediatrics/Division of Nephrology, University of Miami Miller School of Medicine, Miami, FL, USA
- Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Shu Wu
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Karen C Young
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA
| | - Merline Benny
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Miller School of Medicine, University of Miami, P.O. Box 016960 (R-131), Miami, FL, 33101, USA.
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Song Y, Yang C. Mechanistic advances of hyperoxia-induced immature brain injury. Heliyon 2024; 10:e30005. [PMID: 38694048 PMCID: PMC11058899 DOI: 10.1016/j.heliyon.2024.e30005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/11/2024] [Accepted: 04/18/2024] [Indexed: 05/03/2024] Open
Abstract
The impact of hyperoxia-induced brain injury in preterm infants is being increasingly investigated. However, the parameters and protocols used to study this condition in animal models lack consistency. Research is further hampered by the fact that hyperoxia exerts both direct and indirect effects on oligodendrocytes and neurons, with the precise underlying mechanisms remaining unclear. In this article, we aim to provide a comprehensive overview of the conditions used to induce hyperoxia in animal models of immature brain injury. We discuss what is known regarding the mechanisms underlying hyperoxia-induced immature brain injury, focusing on the effects on oligodendrocytes and neurons, and briefly describe therapies that may counteract the effects of hyperoxia. We also identify further studies required to fully elucidate the effects of hyperoxia on the immature brain as well as discuss the leading therapeutic options.
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Affiliation(s)
- Yue Song
- Department of Pediatrics, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, Sichuan Province, China
- Department of Clinical Medicine, The Chengdu Medical College, Chengdu 610500, Sichuan Province, China
| | - Changqiang Yang
- Department of Cardiology, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, Sichuan Province, China
- Department of Clinical Medicine, The Chengdu Medical College, Chengdu 610500, Sichuan Province, China
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3
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Lok IM, Wever KE, Vliegenthart RJS, Onland W, van Kaam AH, van Tuyl M. Effects of postnatal corticosteroids on lung development in newborn animals. A systematic review. Pediatr Res 2024:10.1038/s41390-024-03114-6. [PMID: 38493255 DOI: 10.1038/s41390-024-03114-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/18/2024] [Accepted: 02/05/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND Postnatal systemic corticosteroids reduce the risk of bronchopulmonary dysplasia but the effect depends on timing, dosing, and type of corticosteroids. Animal studies may provide valuable information on these variable effects. This systematic review summarizes the effects of postnatal systemic corticosteroids on lung development in newborn animals. METHODS A systematic search was performed in PubMed and Embase in December 2022. The protocol was published on PROSPERO (CRD42021177701). RESULTS Of the 202 eligible studies, 51 were included. Only newborn rodent studies met the inclusion criteria. Most studies used dexamethasone (98%). There was huge heterogeneity in study outcome measures and corticosteroid treatment regimens. Reporting of study quality indicators was mediocre and risk of bias was unclear due to poor reporting of study methodology. Meta-analysis showed that postnatal corticosteroids caused a decrease in body weight as well as persistent alveolar simplification. Subgroup analyses revealed that healthy animals were most affected. CONCLUSION In newborn rodents, postnatal systemic corticosteroids have a persistent negative effect on body weight and lung development. There was huge heterogeneity in experimental models, mediocre study quality, unclear risk of bias, and very small subgroups for meta-analysis which limited firm conclusions. IMPACT Postnatal corticosteroids reduce the risk of bronchopulmonary dysplasia but the effect depends on timing, dosing, and type of corticosteroids while the underlying mechanism of this variable effect is unknown. This is the first systematic review and meta-analysis of preclinical newborn animal studies reviewing the effect of postnatal systemic corticosteroids on lung development. In newborn rodent models, postnatal corticosteroids have a persistent negative effect on body weight and lung alveolarization, especially in healthy animals.
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Affiliation(s)
- Irene M Lok
- Department of Neonatology, Emma Children's Hospital Amsterdam UMC, location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development (AR&D) Research Institute, Amsterdam, The Netherlands
| | - Kimberley E Wever
- Department of Anesthesiology, Pain and Palliative Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Wes Onland
- Department of Neonatology, Emma Children's Hospital Amsterdam UMC, location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development (AR&D) Research Institute, Amsterdam, The Netherlands
| | - Anton H van Kaam
- Department of Neonatology, Emma Children's Hospital Amsterdam UMC, location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development (AR&D) Research Institute, Amsterdam, The Netherlands
| | - Minke van Tuyl
- Department of Neonatology, Emma Children's Hospital Amsterdam UMC, location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.
- Amsterdam Reproduction & Development (AR&D) Research Institute, Amsterdam, The Netherlands.
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4
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Bowen DR, Pathak S, Nadar RM, Parise RD, Ramesh S, Govindarajulu M, Moore A, Ren J, Moore T, Dhanasekaran M. Oxidative stress and COVID-19-associated neuronal dysfunction: mechanisms and therapeutic implications. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1153-1167. [PMID: 37357527 PMCID: PMC10465323 DOI: 10.3724/abbs.2023085] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/09/2023] [Indexed: 06/27/2023] Open
Abstract
Severe acute respiratory syndrome (SARS)-CoV-2 virus causes novel coronavirus disease 2019 (COVID-19), and there is a possible role for oxidative stress in the pathophysiology of neurological diseases associated with COVID-19. Excessive oxidative stress could be responsible for the thrombosis and other neuronal dysfunctions observed in COVID-19. This review discusses the role of oxidative stress associated with SARS-CoV-2 and the mechanisms involved. Furthermore, the various therapeutics implicated in treating COVID-19 and the oxidative stress that contributes to the etiology and pathogenesis of COVID-19-induced neuronal dysfunction are discussed. Further mechanistic and clinical research to combat COVID-19 is warranted to understand the exact mechanisms, and its true clinical effects need to be investigated to minimize neurological complications from COVID-19.
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Affiliation(s)
- Dylan R. Bowen
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Suhrud Pathak
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Rishi M. Nadar
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Rachel D. Parise
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Sindhu Ramesh
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Manoj Govindarajulu
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Austin Moore
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
| | - Jun Ren
- Department of CardiologyZhongshan Hospital Fudan UniversityShanghai200032China
- Department of Laboratory Medicine and PathologyUniversity of WashingtonSeattleWA98195USA
| | - Timothy Moore
- Department of Drug Discovery and DevelopmentHarrison College of PharmacyAuburn UniversityAuburn-AL36849USA
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Özer Bekmez B, Tayman C, Çakır U, Koyuncu İ, Büyüktiryaki M, Türkmenoğlu TT, Çakır E. Glucocorticoids in a Neonatal Hyperoxic Lung Injury Model: Pulmonary and Neurotoxic effects. Pediatr Res 2022; 92:436-444. [PMID: 34725500 DOI: 10.1038/s41390-021-01777-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 06/18/2021] [Accepted: 09/12/2021] [Indexed: 11/08/2022]
Abstract
BACKGROUND We aimed to compare the effect of dexamethasone (Dex), hydrocortisone (Hc), and methylprednisolone (Mpz) at equivalent doses on somatic growth, lung healing, and neurotoxicity in a hyperoxic rat model. We hypothesized that Mpz and Hc would be superior to Dex with less neurotoxicity by exerting similar therapeutic efficacy on the injured lung. METHODS Neonatal rats were randomized to control, bronchopulmonary dysplasia (BPD), Dex, Hc, and Mpz groups. All drugs were administered daily following day 15 over 7 days. Histopathological and immunohistochemical analyses of the lung and brain were performed on day 22. RESULTS All types had much the same impact on lung repair. Oxidative markers in the lung were similar in the steroid groups. While nuclear factor erythroid 2-related factor and heat-shock protein 70 dropped following steroid treatment, no difference was noted in other biochemical markers in the brain between the study groups. Apoptotic activity and neuron loss in the parietal cortex and hippocampus were noted utmost in Dex, but alike in other BPD groups. CONCLUSIONS Mpz does not appear to be superior to Dex or Hc in terms of pulmonary outcomes and oxidative damage in the brain, but safer than Dex regarding apoptotic neuron loss. IMPACT This is the first study that compared the pulmonary efficacy and neurotoxic effects of Dex, Hc, and Mpz simultaneously in an established BPD model. This study adds to the literature on the importance of possible antioxidant and protective effects of glucocorticoid therapy in an oxidative stress-exposed brain. Mpz ended up with no more additional neuron loss or apoptosis risk by having interchangeable effects with others for the treatment of established BPD. Mpz and Hc seem safe as a rescue therapy in terms of adverse outcomes for established BPD in which lung and brain tissue is already impaired.
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Affiliation(s)
- Buse Özer Bekmez
- Division of Neonatology, Sariyer Hamidiye Etfal Education and Research Hospital, Istanbul, Turkey.
| | - Cüneyt Tayman
- Division of Neonatology, Ankara City Hospital, Ankara, Turkey
| | - Ufuk Çakır
- Division of Neonatology, Ankara City Hospital, Ankara, Turkey
| | - İsmail Koyuncu
- Division of Biochemistry, Faculty of Medicine, Harran University, Şanlıurfa, Turkey
| | - Mehmet Büyüktiryaki
- Division of Neonatology, Faculty of Medicine, Medipol Univerisity, Istanbul, Turkey
| | | | - Esra Çakır
- Division of Anesthesia and Reanimation, Numune Education and Research Hospital, Ankara, Turkey
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6
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Benny M, Hernandez DR, Sharma M, Yousefi K, Kulandavelu S, Batlahally S, Zambrano R, Chen P, Martinez EC, Schmidt AF, Shehadeh LA, Vasquez-Padron RI, Wu S, Velazquez OC, Young KC. Neonatal hyperoxia exposure induces aortic biomechanical alterations and cardiac dysfunction in juvenile rats. Physiol Rep 2020; 8:e14334. [PMID: 31925922 PMCID: PMC6954121 DOI: 10.14814/phy2.14334] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Supplemental oxygen (O2) therapy in preterm infants impairs lung development, but the impact of O2 on long‐term systemic vascular structure and function has not been well‐explored. The present study tested the hypothesis that neonatal O2 therapy induces long‐term structural and functional alterations in the systemic vasculature, resulting in vascular stiffness observed in children and young adults born preterm. Newborn Sprague‐Dawley rats were exposed to normoxia (21% O2) or hyperoxia (85% O2) for 1 and 3 weeks. A subgroup exposed to 3 weeks hyperoxia was recovered in normoxia for an additional 3 weeks. Aortic stiffness was assessed by pulse wave velocity (PWV) using Doppler ultrasound and pressure myography. Aorta remodeling was assessed by collagen deposition and expression. Left ventricular (LV) function was assessed by echocardiography. We found that neonatal hyperoxia exposure increased vascular stiffness at 3 weeks, which persisted after normoxic recovery at 6 weeks of age. These findings were accompanied by increased PWV, aortic remodeling, and altered LV function as evidenced by decreased ejection fraction, cardiac output, and stroke volume. Importantly, these functional changes were associated with increased collagen deposition in the aorta. Together, these findings demonstrate that neonatal hyperoxia induces early and sustained biomechanical alterations in the systemic vasculature and impairs LV function. Early identification of preterm infants who are at risk of developing systemic vascular dysfunction will be crucial in developing targeted prevention strategies that may improve the long‐term cardiovascular outcomes in this vulnerable population.
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Affiliation(s)
- Merline Benny
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Diana R Hernandez
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Mayank Sharma
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Keyvan Yousefi
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, Florida.,Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, Florida.,Division of Cardiology, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida
| | - Shathiyah Kulandavelu
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Sunil Batlahally
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Ronald Zambrano
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Pingping Chen
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Eliana C Martinez
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Augusto F Schmidt
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Lina A Shehadeh
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, Florida.,Division of Cardiology, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida
| | | | - Shu Wu
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
| | - Omaida C Velazquez
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Karen C Young
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, Florida.,Batchelor Children's Research Institute, University of Miami Miller School of Medicine, Miami, Florida
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