1
|
Yang X, Wang X, Dong W. Aryl hydrocarbon receptor (AhR) is regulated by hyperoxia in premature infants. J Matern Fetal Neonatal Med 2024; 37:2349179. [PMID: 38816997 DOI: 10.1080/14767058.2024.2349179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/24/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVE To investigate whether aryl hydrocarbon receptor (AhR) is involved in hyperoxia-mediated oxidative stress by observing the relationship between AhR and reactive oxygen species (ROS) in peripheral blood mononuclear cells (PBMCs) after oxygen exposure in premature infants. METHODS After 48 h of oxygen inhalation at different concentrations, discarded peripheral blood was collected to separate PBMCs and plasma. ROS were labeled with MitoSOXTM Red and detected by fluorescence microscopy in PBMCs. The level of MDA in plasma was detected by thiobarbituric acid colorimetry, the level of MCP-1 in plasma was detected by enzyme-linked immunosorbent assay (ELISA), the localization of AhR was detected by immunofluorescence, and the level of AhR expression in PBMCs was detected by Western blotting. RESULTS As the volume fraction of inspired oxygen increased, compared with those in the air control group, the levels of ROS, MDA in plasma, and MCP-1 in plasma increased gradually in the low concentration oxygen group, medium concentration oxygen group and high concentration oxygen group. The cytoplasm-nuclear translocation rate of AhR gradually increased, and the expression level of AhR gradually decreased. The levels of ROS in PBMCs, MDA in the plasma and MCP-1 in the plasma of premature infants were positively correlated with the cytoplasm-nuclear translocation rate of AhR but negatively correlated with the level of AhR expression. CONCLUSION Aryl hydrocarbon receptor (AhR) is regulated by hyperoxia in premature infants.
Collapse
Affiliation(s)
- Xi Yang
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
| | - Xia Wang
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
| | - Wenbin Dong
- Division of Neonatology, Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Clinical Research Center for Birth Defects, Luzhou, China
| |
Collapse
|
2
|
El-Atawi K, Abdul Wahab MG, Alallah J, Osman MF, Hassan M, Siwji Z, Saleh M. Beyond Bronchopulmonary Dysplasia: A Comprehensive Review of Chronic Lung Diseases in Neonates. Cureus 2024; 16:e64804. [PMID: 39156276 PMCID: PMC11329945 DOI: 10.7759/cureus.64804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2024] [Indexed: 08/20/2024] Open
Abstract
In neonates, pulmonary diseases such as bronchopulmonary dysplasia and other chronic lung diseases (CLDs) pose significant challenges due to their complexity and high degree of morbidity and mortality. This review discusses the etiology, pathophysiology, clinical presentation, and diagnostic criteria for these conditions, as well as current management strategies. The review also highlights recent advancements in understanding the pathophysiology of these diseases and evolving strategies for their management, including gene therapy and stem cell treatments. We emphasize how supportive care is useful in managing these diseases and underscore the importance of a multidisciplinary approach. Notably, we discuss the emerging role of personalized medicine, enabled by advances in genomics and precision therapeutics, in tailoring therapy according to an individual's genetic, biochemical, and lifestyle factors. We conclude with a discussion on future directions in research and treatment, emphasizing the importance of furthering our understanding of these conditions, improving diagnostic criteria, and exploring targeted treatment modalities. The review underscores the need for multicentric and longitudinal studies to improve preventative strategies and better understand long-term outcomes. Ultimately, a comprehensive, innovative, and patient-centered approach can enhance the quality of care and outcomes for neonates with CLDs.
Collapse
Affiliation(s)
| | | | - Jubara Alallah
- Neonatology, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU
- Neonatology, King Abdulaziz Medical City, Ministry of National Guard - Health Affairs, Jeddah, SAU
| | | | | | | | - Maysa Saleh
- Pediatrics and Child Health, Al Jalila Children's Specialty Hospital, Dubai, ARE
| |
Collapse
|
3
|
Ali GF, Hassanein EHM, Mohamed WR. Molecular mechanisms underlying methotrexate-induced intestinal injury and protective strategies. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03164-x. [PMID: 38822868 DOI: 10.1007/s00210-024-03164-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 05/13/2024] [Indexed: 06/03/2024]
Abstract
Methotrexate (MTX) is a folic acid reductase inhibitor that manages various malignancies as well as immune-mediated inflammatory chronic diseases. Despite being frequently prescribed, MTX's severe multiple toxicities can occasionally limit its therapeutic potential. Intestinal toxicity is a severe adverse effect associated with the administration of MTX, and patients are significantly burdened by MTX-provoked intestinal mucositis. However, the mechanism of such intestinal toxicity is not entirely understood, mechanistic studies demonstrated oxidative stress and inflammatory reactions as key factors that lead to the development of MTX-induced intestinal injury. Besides, MTX causes intestinal cells to express pro-inflammatory cytokines like interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α), which activate nuclear factor-kappa B (NF-κB). This is followed by the activation of the Janus kinase/signal transducer and activator of the transcription3 (JAK/STAT3) signaling pathway. Moreover, because of its dual anti-inflammatory and antioxidative properties, nuclear factor erythroid-2-related factor 2/heme oxygenase-1 (Nrf2/HO-1) has been considered a critical signaling pathway that counteracts oxidative stress in MTX-induced intestinal injury. Several agents have potential protective effects in counteracting MTX-provoked intestinal injury such as omega-3 polyunsaturated fatty acids, taurine, umbelliferone, vinpocetine, perindopril, rutin, hesperidin, lycopene, quercetin, apocynin, lactobacillus, berberine, zinc, and nifuroxazide. This review aims to summarize the potential redox molecular mechanisms of MTX-induced intestinal injury and how they can be alleviated. In conclusion, studying these molecular pathways might open the way for early alleviation of the intestinal damage and the development of various agent plans to attenuate MTX-mediated intestinal injury.
Collapse
Affiliation(s)
- Gaber F Ali
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef, 62514, Egypt
| | - Emad H M Hassanein
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Assiut Branch, Al-Azhar University, Assiut, 71524, Egypt
| | - Wafaa R Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni Suef, 62514, Egypt.
| |
Collapse
|
4
|
Rao T, Zhou Y, Chen C, Chen J, Zhang J, Lin W, Jia D. Recent progress in neonatal hyperoxic lung injury. Pediatr Pulmonol 2024. [PMID: 38742254 DOI: 10.1002/ppul.27062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/28/2024] [Accepted: 05/04/2024] [Indexed: 05/16/2024]
Abstract
With the progress in neonatal intensive care, there has been an increase in the survival rates of premature infants. However, this has also led to an increased incidence of neonatal hyperoxia lung injury and bronchopulmonary dysplasia (BPD), whose pathogenesis is believed to be influenced by various prenatal and postnatal factors, although the exact mechanisms remain unclear. Recent studies suggest that multiple mechanisms might be involved in neonatal hyperoxic lung injury and BPD, with sex also possibly playing an important role, and numerous drugs have been proposed and shown promise for improving the treatment outcomes of hyperoxic lung injury. Therefore, this paper aims to analyze and summarize sex differences in neonatal hyperoxic lung injury, potential pathogenesis and treatment progress to provide new ideas for basic and clinical research in this field.
Collapse
Affiliation(s)
- Tian Rao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yiyang Zhou
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chizhang Chen
- Department of Clinical Medicine, Chinese Medicine Hospital of Pingyang, Wenzhou, Zhejiang, China
| | - Jiayi Chen
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wei Lin
- Department of Pediatrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Danyun Jia
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| |
Collapse
|
5
|
Schumacker PT. Bronchopulmonary Dysplasia and Cell Senescence: A Case of Old Lungs in Young Infants? Am J Respir Cell Mol Biol 2024; 70:85-86. [PMID: 38109692 PMCID: PMC10848692 DOI: 10.1165/rcmb.2023-0442ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 12/20/2023] Open
Affiliation(s)
- Paul T Schumacker
- Department of Pediatrics Northwestern University Feinberg School of Medicine Chicago, Illinois
| |
Collapse
|
6
|
Sun T, Yu H, Li D, Zhang H, Fu J. Emerging role of metabolic reprogramming in hyperoxia-associated neonatal diseases. Redox Biol 2023; 66:102865. [PMID: 37659187 PMCID: PMC10480540 DOI: 10.1016/j.redox.2023.102865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/19/2023] [Accepted: 08/25/2023] [Indexed: 09/04/2023] Open
Abstract
Oxygen therapy is common during the neonatal period to improve survival, but it can increase the risk of oxygen toxicity. Hyperoxia can damage multiple organs and systems in newborns, commonly causing lung conditions such as bronchopulmonary dysplasia and pulmonary hypertension, as well as damage to other organs, including the brain, gut, and eyes. These conditions are collectively referred to as newborn oxygen radical disease to indicate the multi-system damage caused by hyperoxia. Hyperoxia can also lead to changes in metabolic pathways and the production of abnormal metabolites through a process called metabolic reprogramming. Currently, some studies have analyzed the mechanism of metabolic reprogramming induced by hyperoxia. The focus has been on mitochondrial oxidative stress, mitochondrial dynamics, and multi-organ interactions, such as the lung-gut, lung-brain, and brain-gut axes. In this article, we provide an overview of the major metabolic pathway changes reported in hyperoxia-associated neonatal diseases and explore the potential mechanisms of metabolic reprogramming. Metabolic reprogramming induced by hyperoxia can cause multi-organ metabolic disorders in newborns, including abnormal glucose, lipid, and amino acid metabolism. Moreover, abnormal metabolites may predict the occurrence of disease, suggesting their potential as therapeutic targets. Although the mechanism of metabolic reprogramming caused by hyperoxia requires further elucidation, mitochondria and the gut-lung-brain axis may play a key role in metabolic reprogramming.
Collapse
Affiliation(s)
- Tong Sun
- Department of Pediatics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Haiyang Yu
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Danni Li
- Department of Pediatics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - He Zhang
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Jianhua Fu
- Department of Pediatics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| |
Collapse
|
7
|
Zhang EY, Bartman CM, Prakash YS, Pabelick CM, Vogel ER. Oxygen and mechanical stretch in the developing lung: risk factors for neonatal and pediatric lung disease. Front Med (Lausanne) 2023; 10:1214108. [PMID: 37404808 PMCID: PMC10315587 DOI: 10.3389/fmed.2023.1214108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/01/2023] [Indexed: 07/06/2023] Open
Abstract
Chronic airway diseases, such as wheezing and asthma, remain significant sources of morbidity and mortality in the pediatric population. This is especially true for preterm infants who are impacted both by immature pulmonary development as well as disproportionate exposure to perinatal insults that may increase the risk of developing airway disease. Chronic pediatric airway disease is characterized by alterations in airway structure (remodeling) and function (increased airway hyperresponsiveness), similar to adult asthma. One of the most common perinatal risk factors for development of airway disease is respiratory support in the form of supplemental oxygen, mechanical ventilation, and/or CPAP. While clinical practice currently seeks to minimize oxygen exposure to decrease the risk of bronchopulmonary dysplasia (BPD), there is mounting evidence that lower levels of oxygen may carry risk for development of chronic airway, rather than alveolar disease. In addition, stretch exposure due to mechanical ventilation or CPAP may also play a role in development of chronic airway disease. Here, we summarize the current knowledge of the impact of perinatal oxygen and mechanical respiratory support on the development of chronic pediatric lung disease, with particular focus on pediatric airway disease. We further highlight mechanisms that could be explored as potential targets for novel therapies in the pediatric population.
Collapse
Affiliation(s)
- Emily Y. Zhang
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States
| | - Colleen M. Bartman
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States
| | - Y. S. Prakash
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Christina M. Pabelick
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Elizabeth R. Vogel
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States
| |
Collapse
|
8
|
Xuefei Y, Dongyan L, Tianming L, Hejuan Z, Jianhua F. O-linked N-acetylglucosamine affects mitochondrial homeostasis by regulating Parkin-dependent mitophagy in hyperoxia-injured alveolar type II cells injury. Respir Res 2023; 24:16. [PMID: 36647045 PMCID: PMC9841680 DOI: 10.1186/s12931-022-02287-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 12/09/2022] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The level of linked N-acetylglucosamine (O-GlcNAc) has been proved to be a sensor of cell state, but its relationship with hyperoxia-induced alveolar type 2 epithelial cells injure and bronchopulmonary dysplasia (BPD) has not been clarified. In this study, we evaluated if these effects ultimately led to functional damage in hyperoxia-induced alveolar cells. METHODS We treated RLE-6TN cells at 85% hyperoxia for 0, 24 and 48 h with Thiamet G (TG), an OGA inhibitor; OSMI-1 (OS), an OGT inhibitor; or with UDP-GlcNAc, which is involved in synthesis of O-GlcNAc as a donor. The metabolic rerouting, cell viability and apoptosis resulting from the changes in O-GlcNAc glycosyltransferase levels were evaluated in RLE-6TN cells after hyperoxia exposure. We constructed rat Park2 overexpression and knockdown plasmmids for in vitro verification and Co-immunoprecipitation corroborated the binding of Parkin and O-GlcNAc. Finally, we assessed morphological detection in neonatal BPD rats with TG and OS treatment. RESULTS We found a decrease in O-GlcNAc content and levels of its metabolic enzymes in RLE-6TN cells under hyperoxia. However, the inhibition of OGT function with OSMI-1 ameliorated hyperoxia-induced lung epithelial cell injury, enhanced cell metabolism and viability, reduced apoptosis, and accelerated the cell proliferation. Mitochondrial homeostasis was affected by O-GlcNAc and regulated Parkin. CONCLUSION The results revealed that the decreased O-GlcNAc levels and increased O-GlcNAcylation of Parkin might cause hyperoxia-induced alveolar type II cells injurys.
Collapse
Affiliation(s)
- Yu Xuefei
- grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning 110004 People’s Republic of China
| | - Liu Dongyan
- grid.412467.20000 0004 1806 3501Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning China
| | - Li Tianming
- grid.412467.20000 0004 1806 3501Department of Gastroenterology and Medical Research Center, Liaoning Key Laboratory of Research and Application of Animal Models for Environmental and Metabolic Diseases, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning China
| | - Zheng Hejuan
- grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning 110004 People’s Republic of China
| | - Fu Jianhua
- grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang, Liaoning 110004 People’s Republic of China
| |
Collapse
|
9
|
Mohammadi A, Higazy R, Gauda EB. PGC-1α activity and mitochondrial dysfunction in preterm infants. Front Physiol 2022; 13:997619. [PMID: 36225305 PMCID: PMC9548560 DOI: 10.3389/fphys.2022.997619] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/09/2022] [Indexed: 11/26/2022] Open
Abstract
Extremely low gestational age neonates (ELGANs) are born in a relatively hyperoxic environment with weak antioxidant defenses, placing them at high risk for mitochondrial dysfunction affecting multiple organ systems including the nervous, respiratory, ocular, and gastrointestinal systems. The brain and lungs are highly affected by mitochondrial dysfunction and dysregulation in the neonate, causing white matter injury (WMI) and bronchopulmonary dysplasia (BPD), respectively. Adequate mitochondrial function is important in providing sufficient energy for organ development as it relates to alveolarization and axonal myelination and decreasing oxidative stress via reactive oxygen species (ROS) and reactive nitrogen species (RNS) detoxification. Peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) is a master regulator of mitochondrial biogenesis and function. Since mitochondrial dysfunction is at the root of WMI and BPD pathobiology, exploring therapies that can regulate PGC-1α activity may be beneficial. This review article describes several promising therapeutic agents that can mitigate mitochondrial dysfunction through direct and indirect activation and upregulation of the PGC-1α pathway. Metformin, resveratrol, omega 3 fatty acids, montelukast, L-citrulline, and adiponectin are promising candidates that require further pre-clinical and clinical studies to understand their efficacy in decreasing the burden of disease from WMI and BPD in preterm infants.
Collapse
Affiliation(s)
- Atefeh Mohammadi
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Randa Higazy
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, Toronto, ON, Canada
| | - Estelle B. Gauda
- The Hospital for Sick Children, Division of Neonatology, Department of Pediatrics and Translational Medicine Program, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- *Correspondence: Estelle B. Gauda,
| |
Collapse
|
10
|
Alva R, Mirza M, Baiton A, Lazuran L, Samokysh L, Bobinski A, Cowan C, Jaimon A, Obioru D, Al Makhoul T, Stuart JA. Oxygen toxicity: cellular mechanisms in normobaric hyperoxia. Cell Biol Toxicol 2022; 39:111-143. [PMID: 36112262 PMCID: PMC9483325 DOI: 10.1007/s10565-022-09773-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/07/2022] [Indexed: 12/15/2022]
Abstract
In clinical settings, oxygen therapy is administered to preterm neonates and to adults with acute and chronic conditions such as COVID-19, pulmonary fibrosis, sepsis, cardiac arrest, carbon monoxide poisoning, and acute heart failure. In non-clinical settings, divers and astronauts may also receive supplemental oxygen. In addition, under current standard cell culture practices, cells are maintained in atmospheric oxygen, which is several times higher than what most cells experience in vivo. In all the above scenarios, the elevated oxygen levels (hyperoxia) can lead to increased production of reactive oxygen species from mitochondria, NADPH oxidases, and other sources. This can cause cell dysfunction or death. Acute hyperoxia injury impairs various cellular functions, manifesting ultimately as physiological deficits. Chronic hyperoxia, particularly in the neonate, can disrupt development, leading to permanent deficiencies. In this review, we discuss the cellular activities and pathways affected by hyperoxia, as well as strategies that have been developed to ameliorate injury.
Collapse
Affiliation(s)
- Ricardo Alva
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Maha Mirza
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Adam Baiton
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Lucas Lazuran
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Lyuda Samokysh
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Ava Bobinski
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Cale Cowan
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Alvin Jaimon
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Dede Obioru
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Tala Al Makhoul
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada
| | - Jeffrey A Stuart
- Department of Biological Sciences, Brock University, St. Catharines, ON, L2S 3A1, Canada.
| |
Collapse
|
11
|
Yee M, McDavid AN, Cohen ED, Huyck HL, Poole C, Altman BJ, Maniscalco WM, Deutsch GH, Pryhuber GS, O’Reilly MA. Neonatal Hyperoxia Activates Activating Transcription Factor 4 to Stimulate Folate Metabolism and Alveolar Epithelial Type 2 Cell Proliferation. Am J Respir Cell Mol Biol 2022; 66:402-414. [PMID: 35045271 PMCID: PMC8990118 DOI: 10.1165/rcmb.2021-0363oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/18/2022] [Indexed: 11/24/2022] Open
Abstract
Oxygen supplementation in preterm infants disrupts alveolar epithelial type 2 (AT2) cell proliferation through poorly understood mechanisms. Here, newborn mice are used to understand how hyperoxia stimulates an early aberrant wave of AT2 cell proliferation that occurs between Postnatal Days (PNDs) 0 and 4. RNA-sequencing analysis of AT2 cells isolated from PND4 mice revealed hyperoxia stimulates expression of mitochondrial-specific methylenetetrahydrofolate dehydrogenase 2 and other genes involved in mitochondrial one-carbon coupled folate metabolism and serine synthesis. The same genes are induced when AT2 cells normally proliferate on PND7 and when they proliferate in response to the mitogen fibroblast growth factor 7. However, hyperoxia selectively stimulated their expression via the stress-responsive activating transcription factor 4 (ATF4). Administration of the mitochondrial superoxide scavenger mitoTEMPO during hyperoxia suppressed ATF4 and thus early AT2 cell proliferation, but it had no effect on normative AT2 cell proliferation seen on PND7. Because ATF4 and methylenetetrahydrofolate dehydrogenase are detected in hyperplastic AT2 cells of preterm infant humans and baboons with bronchopulmonary dysplasia, dampening mitochondrial oxidative stress and ATF4 activation may provide new opportunities for controlling excess AT2 cell proliferation in neonatal lung disease.
Collapse
Affiliation(s)
| | | | | | | | | | - Brian J. Altman
- Department of Biomedical Genetics, School of Medicine and Dentistry, University of Rochester, Rochester, New York; and
| | | | - Gail H. Deutsch
- Department of Pathology, Seattle Children’s Hospital, University of Washington, Seattle, Washington
| | | | | |
Collapse
|
12
|
Eldredge LC. Preventable ATII Proliferation After Hyperoxia: The "Tempo" of Folate Metabolism in the Neonatal Lung. Am J Respir Cell Mol Biol 2022; 66:353-355. [PMID: 35143373 PMCID: PMC8990117 DOI: 10.1165/rcmb.2022-0012ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Affiliation(s)
- Laurie C Eldredge
- University of Washington School of Medicine, 12353, Pediatrics Pulmonology, Seattle, Washington, United States.,Seattle Children's Hospital, 7274, Pulmonary and Sleep Medicine, Seattle, Washington, United States;
| |
Collapse
|
13
|
Thomas JM, Sudhadevi T, Basa P, Ha AW, Natarajan V, Harijith A. The Role of Sphingolipid Signaling in Oxidative Lung Injury and Pathogenesis of Bronchopulmonary Dysplasia. Int J Mol Sci 2022; 23:ijms23031254. [PMID: 35163176 PMCID: PMC8835774 DOI: 10.3390/ijms23031254] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/19/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
Premature infants are born with developing lungs burdened by surfactant deficiency and a dearth of antioxidant defense systems. Survival rate of such infants has significantly improved due to advances in care involving mechanical ventilation and oxygen supplementation. However, a significant subset of such survivors develops the chronic lung disease, Bronchopulmonary dysplasia (BPD), characterized by enlarged, simplified alveoli and deformed airways. Among a host of factors contributing to the pathogenesis is oxidative damage induced by exposure of the developing lungs to hyperoxia. Recent data indicate that hyperoxia induces aberrant sphingolipid signaling, leading to mitochondrial dysfunction and abnormal reactive oxygen species (ROS) formation (ROS). The role of sphingolipids such as ceramides and sphingosine 1-phosphate (S1P), in the development of BPD emerged in the last decade. Both ceramide and S1P are elevated in tracheal aspirates of premature infants of <32 weeks gestational age developing BPD. This was faithfully reflected in the murine models of hyperoxia and BPD, where there is an increased expression of sphingolipid metabolites both in lung tissue and bronchoalveolar lavage. Treatment of neonatal pups with a sphingosine kinase1 specific inhibitor, PF543, resulted in protection against BPD as neonates, accompanied by improved lung function and reduced airway remodeling as adults. This was accompanied by reduced mitochondrial ROS formation. S1P receptor1 induced by hyperoxia also aggravates BPD, revealing another potential druggable target in this pathway for BPD. In this review we aim to provide a detailed description on the role played by sphingolipid signaling in hyperoxia induced lung injury and BPD.
Collapse
Affiliation(s)
- Jaya M. Thomas
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA; (J.M.T.); (T.S.); (P.B.); (A.W.H.)
| | - Tara Sudhadevi
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA; (J.M.T.); (T.S.); (P.B.); (A.W.H.)
| | - Prathima Basa
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA; (J.M.T.); (T.S.); (P.B.); (A.W.H.)
| | - Alison W. Ha
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA; (J.M.T.); (T.S.); (P.B.); (A.W.H.)
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Viswanathan Natarajan
- Department of Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA;
- Department of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Anantha Harijith
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA; (J.M.T.); (T.S.); (P.B.); (A.W.H.)
- Correspondence: ; Tel.: +1-(216)-286-7038
| |
Collapse
|
14
|
Ozdemir R, Gokce IK, Tekin S, Cetin Taslidere A, Turgut H, Tanbek K, Gul CC, Deveci MF, Aslan M. The protective effects of apocynin in hyperoxic lung injury in neonatal rats. Pediatr Pulmonol 2022; 57:109-121. [PMID: 34581514 DOI: 10.1002/ppul.25707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 09/24/2021] [Accepted: 09/25/2021] [Indexed: 11/08/2022]
Abstract
AIM Inflammation and oxidate stress are significant factors in the pathogenesis of bronchopulmonary dysplasia (BPD). The aim of this study is to investigate the efficacy of apocynin (APO), an anti-inflammatory, antioxidant, and antiapoptotic drug, in the prophylaxis of neonatal hyperoxic lung injury. METHOD This experimental study included 40 neonatal rats divided into the control, APO, BPD, and BPD + APO groups. The control and APO groups were kept in a normal room environment, while the BPD and BPD + APO groups were kept in a hyperoxic environment. The rats in the APO and BPD + APO groups were administered intraperitoneal APO, while the control and BPD rats were administered ordinary saline. At the end of the trial, lung tissue was evaluated with respect to the degree of histopathological injury, apoptosis, oxidant and antioxidant capacity, and severity of inflammation. RESULT The BPD and BPD + APO groups exhibited higher mean histopathological injury and alveolar macrophage scores compared to the control and APO groups. Both scores were lower in the BPD + APO group in comparison to the BPD group. The BPD + APO group had a significantly lower average of TUNEL positive cells than the BPD group. The lung tissue examination indicated significantly higher levels of mean malondialdehyde (MDA), total oxidant status (TOS), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) in the BPD group compared to the control and APO groups. While the TNF-α and IL-1β levels of the BPD + APO group were similar to that of the control group, the MDA and TOS levels were higher compared to the controls and lower compared to the BPD group. The BPD group demonstrated significantly lower levels/activities of mean total antioxidant status, glutathione reductase, superoxide dismutase, glutathione peroxidase in comparison to the control and APO groups. While the mean antioxidant enzyme activity of the BPD + APO group was lower than the control group, it was significantly higher compared to the BPD group. CONCLUSION This is the first study in the literature to reveal through an experimental neonatal hyperoxic lung injury that APO, an anti-inflammatory, antioxidant, and antiapoptotic drug, exhibits protective properties against the development of BPD.
Collapse
Affiliation(s)
- Ramazan Ozdemir
- Division of Neonatology, Department of Pediatrics, Inonu University School of Medicine, Malatya, Turkey
| | - Ismail Kursat Gokce
- Division of Neonatology, Department of Pediatrics, Inonu University School of Medicine, Malatya, Turkey
| | - Suat Tekin
- Department of Physiology, Inonu University School of Medicine, Malatya, Turkey
| | - Asli Cetin Taslidere
- Department of Histology and Embryology, Inonu University School of Medicine, Malatya, Turkey
| | - Hatice Turgut
- Division of Neonatology, Department of Pediatrics, Inonu University School of Medicine, Malatya, Turkey
| | - Kevser Tanbek
- Department of Physiology, Inonu University School of Medicine, Malatya, Turkey
| | - Cemile Ceren Gul
- Department of Histology and Embryology, Inonu University School of Medicine, Malatya, Turkey
| | - Mehmet Fatih Deveci
- Division of Neonatology, Department of Pediatrics, Inonu University School of Medicine, Malatya, Turkey
| | - Mehmet Aslan
- Department of Pediatrics, Inonu University School of Medicine, Malatya, Turkey
| |
Collapse
|
15
|
Tian C, Li D, Fu J. Molecular Mechanism of Caffeine in Preventing Bronchopulmonary Dysplasia in Premature Infants. Front Pediatr 2022; 10:902437. [PMID: 35795332 PMCID: PMC9251307 DOI: 10.3389/fped.2022.902437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/31/2022] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic respiratory complication commonly seen in premature infants. Following continuous advances in neonatal intensive care diagnosis and treatment technology, an increasing number of premature babies are being treated successfully. Despite these remarkable improvements, there has been no significant decline in the incidence of BPD; in fact, its incidence has increased as more extremely preterm infants survive. Therefore, in view of the impact of BPD on the physical and mental health of children and the increased familial and social burden on these children, early prevention of BPD is emphasized. In recent decades, the clinical application of caffeine in treating primary apnea in premature infants was shown not only to stimulate the respiratory center but also to confer obvious protection to the nervous and respiratory systems. Numerous clinical cross-sectional and longitudinal studies have shown that caffeine plays a significant role in the prevention and treatment of BPD, but there is a lack of overall understanding of its potential molecular mechanisms. In this review, we summarize the possible molecular mechanisms of caffeine in the prevention or treatment of BPD, aiming to better guide its clinical application.
Collapse
Affiliation(s)
- Congliang Tian
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China.,Department of Pediatrics, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Danni Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jianhua Fu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| |
Collapse
|
16
|
Ha AW, Bai T, Ebenezer DL, Sethi T, Sudhadevi T, Mangio LA, Garzon S, Pryhuber GS, Natarajan V, Harijith A. Sphingosine kinase 1 regulates lysyl oxidase through STAT3 in hyperoxia-mediated neonatal lung injury. Thorax 2022; 77:47-57. [PMID: 33883249 PMCID: PMC9115769 DOI: 10.1136/thoraxjnl-2020-216469] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/29/2021] [Accepted: 04/02/2021] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Neonatal lung injury as a consequence of hyperoxia (HO) therapy and ventilator care contribute to the development of bronchopulmonary dysplasia (BPD). Increased expression and activity of lysyl oxidase (LOX), a key enzyme that cross-links collagen, was associated with increased sphingosine kinase 1 (SPHK1) in human BPD. We, therefore, examined closely the link between LOX and SPHK1 in BPD. METHOD The enzyme expression of SPHK1 and LOX were assessed in lung tissues of human BPD using immunohistochemistry and quantified (Halo). In vivo studies were based on Sphk1-/- and matched wild type (WT) neonatal mice exposed to HO while treated with PF543, an inhibitor of SPHK1. In vitro mechanistic studies used human lung microvascular endothelial cells (HLMVECs). RESULTS Both SPHK1 and LOX expressions were increased in lungs of patients with BPD. Tracheal aspirates from patients with BPD had increased LOX, correlating with sphingosine-1-phosphate (S1P) levels. HO-induced increase of LOX in lungs were attenuated in both Sphk1-/- and PF543-treated WT mice, accompanied by reduced collagen staining (sirius red). PF543 reduced LOX activity in both bronchoalveolar lavage fluid and supernatant of HLMVECs following HO. In silico analysis revealed STAT3 as a potential transcriptional regulator of LOX. In HLMVECs, following HO, ChIP assay confirmed increased STAT3 binding to LOX promoter. SPHK1 inhibition reduced phosphorylation of STAT3. Antibody to S1P and siRNA against SPNS2, S1P receptor 1 (S1P1) and STAT3 reduced LOX expression. CONCLUSION HO-induced SPHK1/S1P signalling axis plays a critical role in transcriptional regulation of LOX expression via SPNS2, S1P1 and STAT3 in lung endothelium.
Collapse
Affiliation(s)
- Alison W Ha
- Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Tao Bai
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - David L Ebenezer
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Tanvi Sethi
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Tara Sudhadevi
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Lizar Ace Mangio
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Steven Garzon
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Gloria S Pryhuber
- Department of Pediatrics, University of Rochester, Rochester, New York, USA
| | - Viswanathan Natarajan
- Department of Pharmacology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Anantha Harijith
- Department of Pediatrics, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| |
Collapse
|
17
|
Oxygen Toxicity to the Immature Lung-Part I: Pathomechanistic Understanding and Preclinical Perspectives. Int J Mol Sci 2021; 22:ijms222011006. [PMID: 34681665 PMCID: PMC8540649 DOI: 10.3390/ijms222011006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 01/13/2023] Open
Abstract
In utero, the fetus and its lungs develop in a hypoxic environment, where HIF-1α and VEGFA signaling constitute major determinants of further development. Disruption of this homeostasis after preterm delivery and extrauterine exposure to high fractions of oxygen are among the key events leading to bronchopulmonary dysplasia (BPD). Reactive oxygen species (ROS) production constitutes the initial driver of pulmonary inflammation and cell death, altered gene expression, and vasoconstriction, leading to the distortion of further lung development. From preclinical studies mainly performed on rodents over the past two decades, the deleterious effects of oxygen toxicity and the injurious insults and downstream cascades arising from ROS production are well recognized. This article provides a concise overview of disease drivers and different therapeutic approaches that have been successfully tested within experimental models. Despite current studies, clinical researchers are still faced with an unmet clinical need, and many of these strategies have not proven to be equally effective in clinical trials. In light of this challenge, adapting experimental models to the complexity of the clinical situation and pursuing new directions constitute appropriate actions to overcome this dilemma. Our review intends to stimulate research activities towards the understanding of an important issue of immature lung injury.
Collapse
|
18
|
Neonatal Extracellular Superoxide Dismutase Knockout Mice Increase Total Superoxide Dismutase Activity and VEGF Expression after Chronic Hyperoxia. Antioxidants (Basel) 2021; 10:antiox10081236. [PMID: 34439484 PMCID: PMC8388997 DOI: 10.3390/antiox10081236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 11/17/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common lung disease affecting premature infants that develops after exposure to supplemental oxygen and reactive oxygen intermediates. Extracellular superoxide dismutase (SOD3) is an enzyme that processes superoxide radicals and has been shown to facilitate vascular endothelial growth factor (VEGF) and nitric oxide (NO) signaling in vascular endothelium. We utilized a mouse model of neonatal hyperoxic lung injury and SOD3 knockout (KO) mice to evaluate its function during chronic hyperoxia exposure. Wild-type age-matched neonatal C57Bl/6 (WT) and SOD3−/− (KO) mice were placed in normoxia (21% FiO2, RA) or chronic hyperoxia (75% FiO2, O2) within 24 h of birth for 14 days continuously and then euthanized. Lungs were harvested for histologic evaluation, as well as comparison of antioxidant enzyme expression, SOD activity, VEGF expression, and portions of the NO signaling pathway. Surprisingly, KO-O2 mice survived without additional alveolar simplification, microvascular remodeling, or nuclear oxidation when compared to WT-O2 mice. KO-O2 mice had increased total SOD activity and increased VEGF expression when compared to WT-O2 mice. No genotype differences were noted in intracellular antioxidant enzyme expression or the NO signaling pathway. These results demonstrate that SOD3 KO mice can survive prolonged hyperoxia without exacerbation of alveolar or vascular phenotype.
Collapse
|
19
|
Xuefei Y, Xinyi Z, Qing C, Dan Z, Ziyun L, Hejuan Z, Xindong X, Jianhua F. Effects of Hyperoxia on Mitochondrial Homeostasis: Are Mitochondria the Hub for Bronchopulmonary Dysplasia? Front Cell Dev Biol 2021; 9:642717. [PMID: 33996802 PMCID: PMC8120003 DOI: 10.3389/fcell.2021.642717] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/12/2021] [Indexed: 12/19/2022] Open
Abstract
Mitochondria are involved in energy metabolism and redox reactions in the cell. Emerging data indicate that mitochondria play an essential role in physiological and pathological processes of neonatal lung development. Mitochondrial damage due to exposure to high concentrations of oxygen is an indeed important factor for simplification of lung structure and development of bronchopulmonary dysplasia (BPD), as reported in humans and rodent models. Here, we comprehensively review research that have determined the effects of oxygen environment on alveolar development and morphology, summarize changes in mitochondria under high oxygen concentrations, and discuss several mitochondrial mechanisms that may affect cell plasticity and their effects on BPD. Thus, the pathophysiological effects of mitochondria may provide insights into targeted mitochondrial and BPD therapy.
Collapse
Affiliation(s)
- Yu Xuefei
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Zhao Xinyi
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Cai Qing
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Zhang Dan
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Liu Ziyun
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Zheng Hejuan
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Xue Xindong
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| | - Fu Jianhua
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang City, China
| |
Collapse
|
20
|
H. sinensis mycelium inhibits epithelial-mesenchymal transition by inactivating the midkine pathway in pulmonary fibrosis. Front Med 2021; 15:313-329. [PMID: 33908025 DOI: 10.1007/s11684-020-0737-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 11/27/2019] [Indexed: 09/29/2022]
Abstract
The medical fungus Hirsutella sinensis has been used as a Chinese folk health supplement because of its immunomodulatory properties. Our previous studies established the antifibrotic action of Hirsutella sinensis mycelium (HSM) in the lung. The epithelial-mesenchymal transition (EMT) is involved in the pathogenesis of idiopathic pulmonary fibrosis. The present study investigates the role of HSM in mediating EMT during the development of pulmonary fibrosis. HSM significantly inhibits bleomycin (BLM)-induced pulmonary fibrosis by blocking the EMT. In addition, the expression levels of midkine are increased in the lungs of the BLM-induced group. Further analysis of the results indicates that the mRNA level of midkine correlated positively with EMT. HSM markedly abrogates the transforming growth factor β-induced EMT-like phenotype and behavior in vitro. The activation of midkine related signaling pathway is ameliorated following HSM treatment, whereas this extract also caused an effective attenuation of the induction of EMT (caused by midkine overexpression) in vitro. Results further confirm that oral medication of HSM disrupted the midkine pathway in vivo. Overall, findings suggest that the midkine pathway and the regulation of the EMT may be considered novel candidate therapeutic targets for the antifibrotic effects caused by HSM.
Collapse
|
21
|
Cohen ED, Yee M, Porter GA, Ritzer E, McDavid AN, Brookes PS, Pryhuber GS, O’Reilly MA. Neonatal hyperoxia inhibits proliferation and survival of atrial cardiomyocytes by suppressing fatty acid synthesis. JCI Insight 2021; 6:140785. [PMID: 33507880 PMCID: PMC8021108 DOI: 10.1172/jci.insight.140785] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
Preterm birth increases the risk for pulmonary hypertension and heart failure in adulthood. Oxygen therapy can damage the immature cardiopulmonary system and may be partially responsible for the cardiovascular disease in adults born preterm. We previously showed that exposing newborn mice to hyperoxia causes pulmonary hypertension by 1 year of age that is preceded by a poorly understood loss of pulmonary vein cardiomyocyte proliferation. We now show that hyperoxia also reduces cardiomyocyte proliferation and survival in the left atrium and causes diastolic heart failure by disrupting its filling of the left ventricle. Transcriptomic profiling showed that neonatal hyperoxia permanently suppressed fatty acid synthase (Fasn), stearoyl-CoA desaturase 1 (Scd1), and other fatty acid synthesis genes in the atria of mice, the HL-1 line of mouse atrial cardiomyocytes, and left atrial tissue explanted from human infants. Suppressing Fasn or Scd1 reduced HL-1 cell proliferation and increased cell death, while overexpressing these genes maintained their expansion in hyperoxia, suggesting that oxygen directly inhibits atrial cardiomyocyte proliferation and survival by repressing Fasn and Scd1. Pharmacologic interventions that restore Fasn, Scd1, and other fatty acid synthesis genes in atrial cardiomyocytes may, thus, provide a way of ameliorating the adverse effects of supplemental oxygen on preterm infants.
Collapse
Affiliation(s)
| | | | | | | | | | - Paul S. Brookes
- Department of Anesthesiology, School of Medicine and Dentistry, The University of Rochester, Rochester, New York, USA
| | | | | |
Collapse
|
22
|
Yee M, David Cohen E, Haak J, Dylag AM, O'Reilly MA. Neonatal hyperoxia enhances age-dependent expression of SARS-CoV-2 receptors in mice. Sci Rep 2020; 10:22401. [PMID: 33372179 PMCID: PMC7769981 DOI: 10.1038/s41598-020-79595-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 12/06/2020] [Indexed: 12/28/2022] Open
Abstract
The severity of COVID-19 lung disease is higher in the elderly and people with pre-existing co-morbidities. People who were born preterm may be at greater risk for COVID-19 because their early exposure to oxygen (hyperoxia) at birth increases the severity of respiratory viral infections. Hyperoxia at birth increases the severity of influenza A virus infections in adult mice by reducing the number of alveolar epithelial type 2 (AT2) cells. Since AT2 cells express the SARS-CoV-2 receptors angiotensin converting enzyme (ACE2) and transmembrane protease/serine subfamily member 2 (TMPRSS2), their expression should decline as AT2 cells are depleted by hyperoxia. Instead, ACE2 was detected in airway Club cells and endothelial cells at birth, and then AT2 cells at one year of age. Neonatal hyperoxia stimulated expression of ACE2 in Club cells and in AT2 cells by 2 months of age. It also stimulated expression of TMPRSS2 in the lung. Increased expression of SARS-CoV-2 receptors was blocked by mitoTEMPO, a mitochondrial superoxide scavenger that reduced oxidative stress and DNA damage seen in oxygen-exposed mice. Our finding that hyperoxia enhances the age-dependent expression of SARS-CoV-2 receptors in mice helps explain why COVID-19 lung disease is greater in the elderly and people with pre-existing co-morbidities.
Collapse
Affiliation(s)
- Min Yee
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - E David Cohen
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - Jeannie Haak
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - Andrew M Dylag
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA
| | - Michael A O'Reilly
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, 601 Elmwood Avenue, Box 850, Rochester, NY, 14642, USA.
| |
Collapse
|
23
|
Yadav A, Rana U, Michalkiewicz T, Teng R, Konduri GG. Decreased AMP-activated protein kinase (AMPK) function and protective effect of metformin in neonatal rat pups exposed to hyperoxia lung injury. Physiol Rep 2020; 8:e14587. [PMID: 32959498 PMCID: PMC7507093 DOI: 10.14814/phy2.14587] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/23/2020] [Accepted: 08/24/2020] [Indexed: 01/20/2023] Open
Abstract
We investigated the hypothesis that exposure of lungs at the saccular stage of development to hyperoxia leads to persistent growth arrest and dysfunction of 5'AMP-activated protein kinase (AMPK), a key energy sensor in the cell. We exposed neonatal rat pups from postnatal day 1- day 10 (P1-P10) to ≥90% oxygen or control normoxia. Pups were euthanized at P4 or P10 or recovered in normoxia until euthanasia at P21. Half of the pups in each group received AMPK activator, metformin, or saline intraperitoneally from P1 to P10. Lung histology, morphometric analysis, immunofluorescence, and immunoblots were done for changes in lung structure at P10 and P21 and AMPK function at P4, P10, and P21. Phosphorylation of AMPK (p-AMPK) was decreased in lungs at P10 and P21 in hyperoxia-exposed pups. Metformin increased the levels of p-AMPK and PGC-1α, a downstream AMPK target which regulates mitochondrial biogenesis, at P4, P10, and P21 in hyperoxia pups. Lung ATP levels decreased during hyperoxia and were increased by metformin at P10 and P21. Radial alveolar count and alveolar septal tips were decreased and mean linear intercept increased in hyperoxia-exposed pups at P10 and the changes persisted at P21; these were improved by metformin. Lung capillary number was decreased in hyperoxia-exposed pups at P10 and P21 and was restored by metformin. Hyperoxia leads to impaired AMPK function, energy balance and alveolar simplification. The AMPK activator, metformin improves AMPK function and alveolar and vascular growth in this rat pup model of hyperoxia-induced lung injury.
Collapse
Affiliation(s)
- Abha Yadav
- Neonatology DivisionUniversity of Pittsburgh Medical Center Pinnacle HospitalHarrisburgPAUSA
| | - Ujala Rana
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Teresa Michalkiewicz
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Ru‐Jeng Teng
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Girija G. Konduri
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| |
Collapse
|
24
|
Yee M, Cohen ED, Haak J, Dylag AM, O'Reilly MA. Neonatal hyperoxia enhances age-dependent expression of SARS-CoV-2 receptors in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020. [PMID: 32743585 PMCID: PMC7386505 DOI: 10.1101/2020.07.22.215962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The severity of COVID-19 lung disease is higher in the elderly and people with pre-existing co-morbidities. People who were born preterm may be at greater risk for COVID-19 because their early exposure to oxygen at birth increases their risk of being hospitalized when infected with RSV and other respiratory viruses. Our prior studies in mice showed how high levels of oxygen (hyperoxia) between postnatal days 0-4 increases the severity of influenza A virus infections by reducing the number of alveolar epithelial type 2 (AT2) cells. Because AT2 cells express the SARS-CoV-2 receptors angiotensin converting enzyme (ACE2) and transmembrane protease/serine subfamily member 2 (TMPRSS2), we expected their expression would decline as AT2 cells were depleted by hyperoxia. Instead, we made the surprising discovery that expression of Ace2 and Tmprss2 mRNA increases as mice age and is accelerated by exposing mice to neonatal hyperoxia. ACE2 is primarily expressed at birth by airway Club cells and becomes detectable in AT2 cells by one year of life. Neonatal hyperoxia increases ACE2 expression in Club cells and makes it detectable in 2-month-old AT2 cells. This early and increased expression of SARS-CoV-2 receptors was not seen in adult mice who had been administered the mitochondrial superoxide scavenger mitoTEMPO during hyperoxia. Our finding that early life insults such as hyperoxia enhances the age-dependent expression of SARS-CoV-2 receptors in the respiratory epithelium helps explain why COVID-19 lung disease is greater in the elderly and people with pre-existing co-morbidities.
Collapse
Affiliation(s)
- Min Yee
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, NY 14642
| | - E David Cohen
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, NY 14642
| | - Jeannie Haak
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, NY 14642
| | - Andrew M Dylag
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, NY 14642
| | - Michael A O'Reilly
- The Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, NY 14642
| |
Collapse
|
25
|
Lung and Eye Disease Develop Concurrently in Supplemental Oxygen-Exposed Neonatal Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 190:1801-1812. [PMID: 32526165 DOI: 10.1016/j.ajpath.2020.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/06/2020] [Accepted: 05/26/2020] [Indexed: 11/23/2022]
Abstract
Bronchopulmonary dysplasia (BPD) and retinopathy of prematurity (ROP) are two debilitating disorders that develop in preterm infants exposed to supplemental oxygen to prevent respiratory failure. Both can lead to lifelong disabilities, such as chronic obstructive pulmonary disease and vision loss. Due to the lack of a standard experimental model of coincident disease, the underlying associations between BPD and ROP are not well characterized. To address this gap, we used the robust mouse model of oxygen-induced retinopathy exposing C57BL/6 mice to 75% oxygen from postnatal day 7 to 12. The cardinal features of ROP were replicated by this strategy, and the lungs of the same mice were simultaneously examined for evidence of BPD-like lung injury, investigating both the short- and long-term effects of early-life supplemental oxygen exposure. At postnatal days 12 and 18, mild lung disease was evident by histopathologic analysis together with the expected vasculopathy in the inner retina. At later time points, the lung lesion had progressed to severe airspace enlargement and alveolar simplification, with concurrent thinning in the outer layer of the retina. In addition, critical angiogenic oxidative stress and inflammatory factors reported to be dysregulated in ROP were similarly impaired in the lungs. These data shed new light on the interconnectedness of these two neonatal disorders, holding potential for the discovery of novel targets to treat BPD and ROP.
Collapse
|
26
|
Effects of Exogenous Melatonin on MAM Induced Lung Injury and Lung Development in Mice Offspring. TANAFFOS 2020; 19:66-73. [PMID: 33101434 PMCID: PMC7569496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Melatonin as an antioxidant agent can have an effective role in lung development. In this study, the effect of melatonin administration on lung injury in the neonate mice was assessed. MATERIALS AND METHODS Lung injury was induced by two injections of 15 mg/kg methylazoxymethanol (MAM) on gestational day 15 (E15). Pregnant BALB/c mice were randomly divided into five groups: Control (CO), Melatonin (MEL), Luzindole (Luz), MAM, and MAM+MEL. Melatonin and luzindole were intra-peritoneally injected at a dose of 10 mg/kg (from E15 until delivery). Histopathological changes including: hemorrhage, neutrophils infiltration and fibrosis in the neonate lung were studied by hematoxylin and eosin (H&E) and Masson's Trichrome staining. Alveolarization and alveolar wall thickness were measured. RESULTS In histological examination, hemorrhage, neutrophils infiltration and fibrosis were seen in the MAM and Luz groups; however, these injuries were attenuated in the MAM plus melatonin group. Significant reduction of alveolarization was recorded in the MAM and Luz groups compared to the control group, while the alveolar wall thickness was significantly increased in these groups compared to control group. CONCLUSION Administration of exogenous melatonin in pregnant mice could have a protective effect on the pulmonary development of neonates and could decrease lung injury in neonate mice.
Collapse
|
27
|
Dylag AM, Brookes PS, O'Reilly MA. Swapping mitochondria: a key to understanding susceptibility to neonatal chronic lung disease. Am J Physiol Lung Cell Mol Physiol 2019; 317:L737-L739. [PMID: 31596117 DOI: 10.1152/ajplung.00395.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Andrew M Dylag
- Department of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, New York
| | - Paul S Brookes
- Department of Anesthesiology, School of Medicine and Dentistry, University of Rochester, Rochester, New York
| | - Michael A O'Reilly
- Department of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, New York
| |
Collapse
|
28
|
Perez M, Robbins ME, Revhaug C, Saugstad OD. Oxygen radical disease in the newborn, revisited: Oxidative stress and disease in the newborn period. Free Radic Biol Med 2019; 142:61-72. [PMID: 30954546 PMCID: PMC6791125 DOI: 10.1016/j.freeradbiomed.2019.03.035] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/06/2019] [Accepted: 03/29/2019] [Indexed: 12/28/2022]
Abstract
Thirty years ago, there was an emerging appreciation for the significance of oxidative stress in newborn disease. This prompted a renewed interest in the impact of oxygen therapy for the newborn in the delivery room and beyond, especially in premature infants. Today, the complexity of oxidative stress both in normal regulation and pathology is better understood, especially as it relates to neonatal mitochondrial oxidative stress responses to hyperoxia. Mitochondria are recipients of oxidative damage and have a propensity for oxidative self-injury that has been implicated in the pathogenesis of neonatal lung diseases. Similarly, both intrauterine growth restriction (IUGR) and macrosomia are associated with mitochondrial dysfunction and oxidative stress. Additionally, reoxygenation with 100% O2 in a hypoxic-ischemic newborn lamb model increased the production of pro-inflammatory cytokines in the brain. Moreover, the interplay between inflammation and oxidative stress in the newborn is better understood because of animal studies. Transcriptomic analyses have found a number of genes to be differentially expressed in murine models of bronchopulmonary dysplasia (BPD). Epigenetic changes have also been detected both in animal models of BPD and premature infants exposed to oxygen. Antioxidant therapy to prevent newborn disease has not been very successful; however, new therapeutic principles, like melatonin, are under investigation.
Collapse
Affiliation(s)
- Marta Perez
- Division of Neonatology, Stanley Manne Children's Research Institute, Ann and Robert H Lurie Children's Hospital, Chicago, IL, United States; Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL, United States
| | - Mary E Robbins
- Division of Neonatology, Stanley Manne Children's Research Institute, Ann and Robert H Lurie Children's Hospital, Chicago, IL, United States; Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL, United States
| | - Cecilie Revhaug
- Department of Pediatric Research, University of Oslo, Oslo University Hospital, Norway
| | - Ola D Saugstad
- Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, IL, United States; Department of Pediatric Research, University of Oslo, Oslo University Hospital, Norway.
| |
Collapse
|
29
|
Berkelhamer SK, Helman JM, Gugino SF, Leigh NJ, Lakshminrusimha S, Goniewicz ML. In Vitro Consequences of Electronic-Cigarette Flavoring Exposure on the Immature Lung. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16193635. [PMID: 31569724 PMCID: PMC6801380 DOI: 10.3390/ijerph16193635] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 12/17/2022]
Abstract
Background: The developing lung is uniquely susceptible and may be at increased risk of injury with exposure to e-cigarette constituents. We hypothesize that cellular toxicity and airway and vascular responses with exposure to flavored refill solutions may be altered in the immature lung. Methods: Fetal, neonatal, and adult ovine pulmonary artery smooth muscle cells (PASMC) were exposed to popular flavored nicotine-free e-cigarette refill solutions (menthol, strawberry, tobacco, and vanilla) and unflavored solvents: propylene glycol (PG) or vegetable glycerin (VG). Viability was assessed by lactate dehydrogenase assay. Brochodilation and vasoreactivity were determined on isolated ovine bronchial rings (BR) and pulmonary arteries (PA). Results: Neither PG or VG impacted viability of immature or adult cells; however, exposure to menthol and strawberry flavored solutions increased cell death. Neonatal cells were uniquely susceptible to menthol flavoring-induced toxicity, and all four flavorings demonstrated lower lethal doses (LD50) in immature PASMC. Exposure to flavored solutions induced bronchodilation of neonatal BR, while only menthol induced airway relaxation in adults. In contrast, PG/VG and flavored solutions did not impact vasoreactivity with the exception of menthol-induced relaxation of adult PAs. Conclusion: The immature lung is uniquely susceptible to cellular toxicity and altered airway responses with exposure to common flavored e-cigarette solutions.
Collapse
Affiliation(s)
- Sara K Berkelhamer
- Department of Pediatrics, University at Buffalo, SUNY, Buffalo, NY 14203, USA.
| | - Justin M Helman
- Department of Pediatrics, University at Buffalo, SUNY, Buffalo, NY 14203, USA.
| | - Sylvia F Gugino
- Department of Pediatrics, University at Buffalo, SUNY, Buffalo, NY 14203, USA.
| | - Noel J Leigh
- Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| | | | - Maciej L Goniewicz
- Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| |
Collapse
|
30
|
Dumpa V, Nielsen L, Wang H, Kumar VHS. Caffeine is associated with improved alveolarization and angiogenesis in male mice following hyperoxia induced lung injury. BMC Pulm Med 2019; 19:138. [PMID: 31362742 PMCID: PMC6668145 DOI: 10.1186/s12890-019-0903-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 07/23/2019] [Indexed: 12/11/2022] Open
Abstract
Background Caffeine therapy for apnea of prematurity reduces the incidence of bronchopulmonary dysplasia (BPD) in premature neonates. Several mechanisms, including improvement in pulmonary mechanics underly beneficial effects of caffeine in BPD. As vascular development promotes alveologenesis, we hypothesized that caffeine might enhance angiogenesis in the lung, promoting lung growth, thereby attenuating BPD. Methods C57Bl/6 mice litters were randomized within 12 h of birth to room air (RA) or 95%O2 to receive caffeine (20 mg/kg/day) or placebo for 4 days and recovered in RA for 12wks. The lung mRNA and protein expression for hypoxia-inducible factors (HIF) and angiogenic genes performed on day 5. Lung morphometry and vascular remodeling assessed on inflation fixed lungs at 12wks. Results Caffeine and hyperoxia in itself upregulate HIF-2α and vascular endothelial growth factor gene expression. Protein expression of HIF-2α and VEGFR1 were higher in hyperoxia/caffeine and angiopoietin-1 lower in hyperoxia. An increase in radial alveolar count, secondary septal count, and septal length with a decrease in mean linear intercept indicate an amelioration of hyperoxic lung injury by caffeine. An increase in vessel surface area and a significant reduction in smooth muscle thickness of the pulmonary arterioles may suggest a beneficial effect of caffeine on vascular remodeling in hyperoxia, especially in male mice. Conclusions Postnatal caffeine by modulating angiogenic gene expression early in lung development may restore the pulmonary microvasculature and alveolarization in adult lung.
Collapse
Affiliation(s)
| | - Lori Nielsen
- Division of Neonatology, Department of Pediatrics, John R Oishei Children's Hospital, University at Buffalo, 1001 5th Floor Main Street, Buffalo, NY, 14203, USA
| | - Huamei Wang
- Division of Neonatology, Department of Pediatrics, John R Oishei Children's Hospital, University at Buffalo, 1001 5th Floor Main Street, Buffalo, NY, 14203, USA
| | - Vasantha H S Kumar
- Division of Neonatology, Department of Pediatrics, John R Oishei Children's Hospital, University at Buffalo, 1001 5th Floor Main Street, Buffalo, NY, 14203, USA.
| |
Collapse
|
31
|
Ten VS, Ratner V. Mitochondrial bioenergetics and pulmonary dysfunction: Current progress and future directions. Paediatr Respir Rev 2019; 34:37-45. [PMID: 31060947 PMCID: PMC6790157 DOI: 10.1016/j.prrv.2019.04.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/04/2019] [Indexed: 12/26/2022]
Abstract
This review summarizes current understanding of mitochondrial bioenergetic dysfunction applicable to mechanisms of lung diseases and outlines challenges and future directions in this rapidly emerging field. Although the role of mitochondria extends beyond the term of cellular "powerhouse", energy generation remains the most fundamental function of these organelles. It is not counterintuitive to propose that intact energy supply is important for favorable cellular fate following pulmonary insult. In this review, the discussion of mitochondrial dysfunction focuses on those molecular mechanisms that alter cellular bioenergetics in the lungs: (a) inhibition of mitochondrial respiratory chain, (b) mitochondrial leak and uncoupling, (c) alteration of mitochondrial Ca2+ handling, (d) mitochondrial production of reactive oxygen species and self-oxidation. The discussed lung diseases were selected according to their pathological nature and relevance to pediatrics: Acute lung injury (ALI), defined as acute parenchymal lung disease associated with cellular demise and inflammation (Acute Respiratory Distress Syndrome, ARDS, Pneumonia), alveolar developmental failure (Bronchopulmonary Dysplasia, BPD or chronic lung disease in premature infants), obstructive airway diseases (Bronchial asthma) and vascular remodeling affecting pulmonary circulation (Pulmonary Hypertension, PH). The analysis highlights primary mechanisms of mitochondrial bioenergetic dysfunction contributing to the disease-specific pulmonary insufficiency and proposes potential therapeutic targets.
Collapse
Affiliation(s)
- Vadim S. Ten
- Division of Neonatology, Department of Pediatrics, Columbia University Medical Center, New York, NY
| | - Veniamin Ratner
- Division of Neonatology, Department of Pediatrics, Icahn Mount Sinai School of Medicine, New York, NY
| |
Collapse
|
32
|
Pan S, Conaway S, Deshpande DA. Mitochondrial regulation of airway smooth muscle functions in health and pulmonary diseases. Arch Biochem Biophys 2019; 663:109-119. [PMID: 30629957 DOI: 10.1016/j.abb.2019.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/28/2018] [Accepted: 01/04/2019] [Indexed: 12/24/2022]
Abstract
Mitochondria are important for airway smooth muscle physiology due to their diverse yet interconnected roles in calcium handling, redox regulation, and cellular bioenergetics. Increasing evidence indicates that mitochondria dysfunction is intimately associated with airway diseases such as asthma, IPF and COPD. In these pathological conditions, increased mitochondrial ROS, altered bioenergetics profiles, and calcium mishandling contribute collectively to changes in cellular signaling, gene expression, and ultimately changes in airway smooth muscle contractile/proliferative properties. Therefore, understanding the basic features of airway smooth muscle mitochondria and their functional contribution to airway biology and pathology are key to developing novel therapeutics for airway diseases. This review summarizes the recent findings of airway smooth muscle mitochondria focusing on calcium homeostasis and redox regulation, two key determinants of physiological and pathological functions of airway smooth muscle.
Collapse
Affiliation(s)
- Shi Pan
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Stanley Conaway
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Deepak A Deshpande
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
| |
Collapse
|
33
|
Zou D, Li J, Fan Q, Zheng X, Deng J, Wang S. Reactive oxygen and nitrogen species induce cell apoptosis via a mitochondria‐dependent pathway in hyperoxia lung injury. J Cell Biochem 2018; 120:4837-4850. [PMID: 30592322 DOI: 10.1002/jcb.27382] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/03/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Dongmei Zou
- Department of Pediatrics, Shenzhen Children's Hospital, Shenzhen, China
| | - Jing Li
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, China
| | - Qianqian Fan
- Neonatal Intensive Care Unit, Shenzhen Longhua District Central Hospital, Shenzhen, China
| | - Xuemei Zheng
- Neonatal Intensive Care Unit, Women and Children Health Institute Futian, Shenzhen, China
| | - Jian Deng
- Neonatal Intensive Care Unit, Women and Children Health Institute Futian, Shenzhen, China
| | - Shaohua Wang
- Neonatal Intensive Care Unit, Women and Children Health Institute Futian, Shenzhen, China
| |
Collapse
|
34
|
Schlüter KD, Kutsche HS, Hirschhäuser C, Schreckenberg R, Schulz R. Review on Chamber-Specific Differences in Right and Left Heart Reactive Oxygen Species Handling. Front Physiol 2018; 9:1799. [PMID: 30618811 PMCID: PMC6304434 DOI: 10.3389/fphys.2018.01799] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/29/2018] [Indexed: 01/21/2023] Open
Abstract
Reactive oxygen species (ROS) exert signaling character (redox signaling), or damaging character (oxidative stress) on cardiac tissue depending on their concentration and/or reactivity. The steady state of ROS concentration is determined by the interplay between its production (mitochondrial, cytosolic, and sarcolemmal enzymes) and ROS defense enzymes (mitochondria, cytosol). Recent studies suggest that ROS regulation is different in the left and right ventricle of the heart, specifically by a different activity of superoxide dismutase (SOD). Mitochondrial ROS defense seems to be lower in right ventricular tissue compared to left ventricular tissue. In this review we summarize the current evidence for heart chamber specific differences in ROS regulation that may play a major role in an observed inability of the right ventricle to compensate for cardiac stress such as pulmonary hypertension. Based on the current knowledge regimes to increase ROS defense in right ventricular tissue should be in the focus for the development of future therapies concerning right heart failure.
Collapse
Affiliation(s)
| | - Hanna Sarah Kutsche
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | | | - Rolf Schreckenberg
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Rainer Schulz
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| |
Collapse
|
35
|
Sallon C, Provost PR, LeBlanc D, Soulet D, Tremblay Y. Essential Intracrine Androgenic Action in Lung Development for Both Sexes. J Steroid Biochem Mol Biol 2018; 183:184-191. [PMID: 29940312 DOI: 10.1016/j.jsbmb.2018.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 05/30/2018] [Accepted: 06/19/2018] [Indexed: 11/22/2022]
Abstract
Albeit their recognized negative effects on lung maturation, androgens have been proposed to play an essential positive role in lung development. This work aimed to evaluate the impact of blocking endogenous androgen and estrogen actions and to study the effect of an excess of androgen and estrogen during the end of saccular stage and the beginning of the alveolar stage on lung development. This was performed with normal oxygen atmosphere and with hyperoxia, a model of alveolar simplification, which is observed in new bronchopulmonary dysplasia. Mouse lung samples were collected on postnatal day 9 after exposure to 21% or 80% oxygen (postnatal days 1 to 4), and after administration (postnatal days 3 to 8) of vehicle, pure antiandrogen (flutamide), dihydrotestosterone, pure antiestrogen (fulvestrant), or 17β-estradiol. With 21% oxygen, the major effects on morphometric parameters were induced by flutamide. In contrast, with hyperoxia, both flutamide and dihydrotestosterone had similar effects on several morphometric parameters. For instance, a decrease in the relative frequency of closed areas (mainly composed of saccules/alveoli) < 1000 μm2 and an increase for those > 2500 μm2 were observed after flutamide administration. In conclusion, during the junction between the saccular and the alveolar stages, endogenous androgens play an essential intracrine role in lung development for both sexes while an excess of androgens are deleterious when combined with a hyperoxia treatment, but not with normal oxygen levels. Endogenous estrogens have no effects on the lungs during the developmental window studied, while exogenous estrogens had only isolated effects on some morphometric parameters.
Collapse
Affiliation(s)
- Céline Sallon
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Pierre R Provost
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada; Département d'obstétrique/gynécologie & reproduction, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Danahé LeBlanc
- Axe neuroscience, Centre de recherche du CHU de Québec, Québec, QC, Canada
| | - Denis Soulet
- Axe neuroscience, Centre de recherche du CHU de Québec, Québec, QC, Canada; Faculté de pharmacie, Université Laval, Québec, QC, Canada
| | - Yves Tremblay
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada; Département d'obstétrique/gynécologie & reproduction, Faculté de médecine, Université Laval, Québec, QC, Canada.
| |
Collapse
|
36
|
Cheon IS, Son YM, Jiang L, Goplen NP, Kaplan MH, Limper AH, Kita H, Paczesny S, Prakash YS, Tepper R, Ahlfeld SK, Sun J. Neonatal hyperoxia promotes asthma-like features through IL-33-dependent ILC2 responses. J Allergy Clin Immunol 2018; 142:1100-1112. [PMID: 29253513 PMCID: PMC6003836 DOI: 10.1016/j.jaci.2017.11.025] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 11/06/2017] [Accepted: 11/24/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Premature infants often require oxygen supplementation and, therefore, are exposed to oxidative stress. Following oxygen exposure, preterm infants frequently develop chronic lung disease and have a significantly increased risk of asthma. OBJECTIVE We sought to identify the underlying mechanisms by which neonatal hyperoxia promotes asthma development. METHODS Mice were exposed to neonatal hyperoxia followed by a period of room air recovery. A group of mice was also intranasally exposed to house dust mite antigen. Assessments were performed at various time points for evaluation of airway hyperresponsiveness, eosinophilia, mucus production, inflammatory gene expression, and TH and group 2 innate lymphoid cell (ILC2) responses. Sera from term- and preterm-born infants were also collected and levels of IL-33 and type 2 cytokines were measured. RESULTS Neonatal hyperoxia induced asthma-like features including airway hyperresponsiveness, mucus hyperplasia, airway eosinophilia, and type 2 pulmonary inflammation. In addition, neonatal hyperoxia promoted allergic TH responses to house dust mite exposure. Elevated IL-33 levels and ILC2 responses were observed in the lungs most likely due to oxidative stress caused by neonatal hyperoxia. IL-33 receptor signaling and ILC2s were vital for the induction of asthma-like features following neonatal hyperoxia. Serum IL-33 levels correlated significantly with serum levels of IL-5 and IL-13 but not IL-4 in preterm infants. CONCLUSIONS These data demonstrate that an axis involving IL-33 and ILC2s is important for the development of asthma-like features following neonatal hyperoxia and suggest therapeutic potential for targeting IL-33, ILC2s, and oxidative stress to prevent and/or treat asthma development related to prematurity.
Collapse
Affiliation(s)
- In Su Cheon
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Young Min Son
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Li Jiang
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Nicholas P Goplen
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Mark H Kaplan
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind
| | - Andrew H Limper
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Hirohito Kita
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Sophie Paczesny
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind
| | - Y S Prakash
- Department of Anesthesiology, Mayo Clinic College of Medicine and Science, Rochester, Minn; Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Rochester, Minn
| | - Robert Tepper
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind
| | - Shawn K Ahlfeld
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
| | - Jie Sun
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Ind; Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, Minn; Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, Minn.
| |
Collapse
|
37
|
Tang X. Interleukin-33 (IL-33) Increases Hyperoxia-Induced Bronchopulmonary Dysplasia in Newborn Mice by Regulation of Inflammatory Mediators. Med Sci Monit 2018; 24:6717-6728. [PMID: 30244258 PMCID: PMC6266634 DOI: 10.12659/msm.910851] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Interleukin-33 (IL-33) has been reported to affect chronic inflammation of the lungs, but its impact on hyperoxia-injured lungs in newborns remains obscure. This study aimed to investigate the role of IL-33 in the lungs of neonatal mice with hyperoxia-induced bronchopulmonary dysplasia (BPD). Material/Methods Twenty-four C57BL/6 baby mice were randomly separated into three groups: the on-air group (N=16); the O2 group (N=8); and the O2 + anti-IL-33 group (N=8). Forced mechanical ventilation with oxygen-rich air (MV-O2) was used in 16 mouse pups. The mouse pups were incubated in containers with either air or 85% O2 for 1, 3, 7, 14, 21, and 28 days after birth. At the end of the treatment period, the mouse lungs were studied by histology, Western blot, and quantitative real-time polymerase chain reaction (qRT-PCR) to examine the expression of the pro-inflammatory mediators, including interleukin (IL)-1β, chemokine (CC motif) ligand 1 (CXCL-1), and monocyte chemoattractant protein-1 (MCP-1). Results Following forced MV-O2, increased levels of IL-33 in whole mouse lungs were associated with impaired alveolar growth and with changes consistent with BPD, including reduced numbers of enlarged alveoli, increased apoptosis, and increased expression of IL-1β, CXCL-1, and MCP-1. IL-33 inhibition improved alveolar development in hyperoxia-impaired lungs and suppressed IL-1β and MCP-1 expression and was associated with increased transforming growth factor-β (TGF-β) signaling, reduced pulmonary NF-κB activity and decreased expression of the TGF-β inhibitor SMAD-7 in forced MV-O2 exposed mouse pups. Conclusions IL-33 increased hyperoxia-induced BPD in newborn mice by regulation of the expression of inflammatory mediators.
Collapse
Affiliation(s)
- Xiqin Tang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| |
Collapse
|
38
|
Abstract
The intestinal epithelium is a multicellular interface in close proximity to a dense microbial milieu that is completely renewed every 3-5 days. Pluripotent stem cells reside at the crypt, giving rise to transient amplifying cells that go through continuous steps of proliferation, differentiation and finally anoikis (a form of programmed cell death) while migrating upwards to the villus tip. During these cellular transitions, intestinal epithelial cells (IECs) possess distinct metabolic identities reflected by changes in mitochondrial activity. Mitochondrial function emerges as a key player in cell fate decisions and in coordinating cellular metabolism, immunity, stress responses and apoptosis. Mediators of mitochondrial signalling include molecules such as ATP and reactive oxygen species and interrelate with pathways such as the mitochondrial unfolded protein response (MT-UPR) and AMP kinase signalling, in turn affecting cell cycle progression and stemness. Alterations in mitochondrial function and MT-UPR activation are integral aspects of pathologies, including IBD and cancer. Mitochondrial signalling and concomitant changes in metabolism contribute to intestinal homeostasis and regulate IEC dedifferentiation-differentiation programmes in the context of diseases, suggesting that mitochondrial function as a cellular checkpoint critically contributes to disease outcome. This Review highlights mitochondrial function and MT-UPR signalling in epithelial cell stemness, differentiation and lineage commitment and illustrates mitochondrial function in intestinal diseases.
Collapse
|
39
|
Ducsay CA, Goyal R, Pearce WJ, Wilson S, Hu XQ, Zhang L. Gestational Hypoxia and Developmental Plasticity. Physiol Rev 2018; 98:1241-1334. [PMID: 29717932 PMCID: PMC6088145 DOI: 10.1152/physrev.00043.2017] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Hypoxia is one of the most common and severe challenges to the maintenance of homeostasis. Oxygen sensing is a property of all tissues, and the response to hypoxia is multidimensional involving complicated intracellular networks concerned with the transduction of hypoxia-induced responses. Of all the stresses to which the fetus and newborn infant are subjected, perhaps the most important and clinically relevant is that of hypoxia. Hypoxia during gestation impacts both the mother and fetal development through interactions with an individual's genetic traits acquired over multiple generations by natural selection and changes in gene expression patterns by altering the epigenetic code. Changes in the epigenome determine "genomic plasticity," i.e., the ability of genes to be differentially expressed according to environmental cues. The genomic plasticity defined by epigenomic mechanisms including DNA methylation, histone modifications, and noncoding RNAs during development is the mechanistic substrate for phenotypic programming that determines physiological response and risk for healthy or deleterious outcomes. This review explores the impact of gestational hypoxia on maternal health and fetal development, and epigenetic mechanisms of developmental plasticity with emphasis on the uteroplacental circulation, heart development, cerebral circulation, pulmonary development, and the hypothalamic-pituitary-adrenal axis and adipose tissue. The complex molecular and epigenetic interactions that may impact an individual's physiology and developmental programming of health and disease later in life are discussed.
Collapse
Affiliation(s)
- Charles A. Ducsay
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| | - Ravi Goyal
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| | - William J. Pearce
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| | - Sean Wilson
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| | - Xiang-Qun Hu
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| | - Lubo Zhang
- The Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, California
| |
Collapse
|
40
|
Yee M, Cohen ED, Domm W, Porter GA, McDavid AN, O’Reilly MA. Neonatal hyperoxia depletes pulmonary vein cardiomyocytes in adult mice via mitochondrial oxidation. Am J Physiol Lung Cell Mol Physiol 2018; 314:L846-L859. [PMID: 29345197 PMCID: PMC6008126 DOI: 10.1152/ajplung.00409.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Supplemental oxygen given to preterm infants has been associated with permanently altering postnatal lung development. Now that these individuals are reaching adulthood, there is growing concern that early life oxygen exposure may also promote cardiovascular disease through poorly understood mechanisms. We previously reported that adult mice exposed to 100% oxygen between postnatal days 0 and 4 develop pulmonary hypertension, defined pathologically by capillary rarefaction, dilation of arterioles and veins, cardiac failure, and a reduced lifespan. Here, Affymetrix Gene Arrays are used to identify early transcriptional changes that take place in the lung before pulmonary capillary rarefaction. We discovered neonatal hyperoxia reduced expression of cardiac muscle genes, including those involved in contraction, calcium signaling, mitochondrial respiration, and vasodilation. Quantitative RT-PCR, immunohistochemistry, and genetic lineage mapping using Myh6CreER; Rosa26RmT/mG mice revealed this reflected loss of pulmonary vein cardiomyocytes. The greatest loss of cadiomyocytes was seen within the lung followed by a graded loss beginning at the hilum and extending into the left atrium. Loss of these cells was seen by 2 wk of age in mice exposed to ≥80% oxygen and was attributed, in part, to reduced proliferation. Administering mitoTEMPO, a scavenger of mitochondrial superoxide during neonatal hyperoxia prevented loss of these cells. Since pulmonary vein cardiomyocytes help pump oxygen-rich blood out of the lung, their early loss following neonatal hyperoxia may contribute to cardiovascular disease seen in these mice, and perhaps in people who were born preterm.
Collapse
Affiliation(s)
- Min Yee
- 1Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - Ethan David Cohen
- 2Department of Medicine, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - William Domm
- 1Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - George A. Porter
- 1Department of Pediatrics, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | - Andrew N. McDavid
- 3Biostatistics and Computational Biology, School of Medicine and Dentistry, The University of Rochester, Rochester, New York
| | | |
Collapse
|
41
|
Jochmans-Lemoine A, Revollo S, Villalpando G, Valverde I, Gonzales M, Laouafa S, Soliz J, Joseph V. Divergent Mitochondrial Antioxidant Activities and Lung Alveolar Architecture in the Lungs of Rats and Mice at High Altitude. Front Physiol 2018; 9:311. [PMID: 29670534 PMCID: PMC5893716 DOI: 10.3389/fphys.2018.00311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 03/14/2018] [Indexed: 01/22/2023] Open
Abstract
Compared with mice, adult rats living at 3,600 m above sea level (SL—La Paz, Bolivia) have high hematocrit, signs of pulmonary hypertension, and low lung volume with reduced alveolar surface area. This phenotype is associated with chronic mountain sickness in humans living at high altitude (HA). We tested the hypothesis that this phenotype is associated with impaired gas exchange and oxidative stress in the lungs. We used rats and mice (3 months old) living at HA (La Paz) and SL (Quebec City, Canada) to measure arterial oxygen saturation under graded levels of hypoxia (by pulse oximetry), the alveolar surface area in lung slices and the activity of pro- (NADPH and xanthine oxidases—NOX and XO) and anti- (superoxide dismutase, and glutathione peroxidase—SOD and GPx) oxidant enzymes in cytosolic and mitochondrial lung protein extracts. HA rats have a lower arterial oxygen saturation and reduced alveolar surface area compared to HA mice and SL rats. Enzymatic activities (NOX, XO, SOD, and GPx) in the cytosol were similar between HA and SL animals, but SOD and GPx activities in the mitochondria were 2–3 times higher in HA vs. SL rats, and only marginally higher in HA mice vs. SL mice. Furthermore, the maximum activity of cytochrome oxidase-c (COX) measured in mitochondrial lung extracts was also 2 times higher in HA rats compared with SL rats, while there was only a small increase in HA mice vs. SL mice. Interestingly, compared with SL controls, alterations in lung morphology are not observed for young rats at HA (15 days after birth), and enzymatic activities are only slightly altered. These results suggest that rats living at HA have a gradual reduction of their alveolar surface area beyond the postnatal period. We can speculate that the elevation of SOD, GPx, and COX activities in the lung mitochondria are not sufficient to compensate for oxidative stress, leading to damage of the lung tissue in rats.
Collapse
Affiliation(s)
- Alexandra Jochmans-Lemoine
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, QC, Canada
| | - Susana Revollo
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, QC, Canada
| | - Gabriella Villalpando
- Instituto Boliviano de Biologia de Altura, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Ibana Valverde
- Instituto Boliviano de Biologia de Altura, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Marcelino Gonzales
- Instituto Boliviano de Biologia de Altura, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Sofien Laouafa
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, QC, Canada.,Centre National de la Recherche Scientifique, UMR 5023, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Jorge Soliz
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, QC, Canada
| | - Vincent Joseph
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, QC, Canada
| |
Collapse
|
42
|
包 和, 马 树. [Regulatory role of Shh signaling pathway in lung development in fetal mice]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:274-282. [PMID: 29643032 PMCID: PMC6744159 DOI: 10.3969/j.issn.1673-4254.2018.03.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the regulatory role of classical Shh signaling pathway in the development of the epithelium and mesenchyme (bronchial cartilage and smooth muscles) during lung development in fetal mice. METHODS Immunohistochemical technique was used to detect the expression of Shh signaling pathway receptor Smo and Pdgfr-α in murine fetal lungs to explore the spatial and temporal characteristics of their expression. Based on the interstitial specificity of Pdgfr-α expression, we constructed a Pdgfr-α-cre to establish a E12.5 - E16.5 transgenic mice with specific knockout of the key Shh signaling molecule Smo in the pulmonary interstitium with tamoxifen induction. Immunofluorescence technique was used to observe the epithelium and mesenchyme (bronchial cartilage and smooth muscle) during fetal lung development in the transgenic mice to assess the role of Shh signaling pathway in the epithelial-to-mesenchymal (EMT) transition during the lung development. RESULTS Smo was highly expressed in the epithelial and stromal lung tissues in the pseudoglandular stage and was gradually lowered over time with its distribution mainly in the interstitial tissues. Pdgfr-α was enriched in the distal lung epithelial and mesenchy tissues in early embryonic lungs and gradually migrated to the proximal stroma until becoming concentrated around the main bronchial proximal stroma. We successfully specific established mouse models of specific mesenchymal Smo knockout. Compared with the control group, the transgenic mice during E12.5-E16.5 showed significantly reduced lung the volume and bronchial branching with also decreased expression of the proximal epithelial P63 (P<0.05). The transgenic mice exhibited alterations in the expression of α-smooth muscle actin with delayed bronchial cartilage development and decreased expression of mucoprotein. CONCLUSION The temporospatial specific expression of Shh signaling pathway plays an important role in developmental regulation of mouse embryonic lung epithelium and mesenchyme (bronchial cartilage and smooth muscle).
Collapse
Affiliation(s)
- 和婧 包
- 重庆三峡中心医院肿瘤消化病区,重庆 万州 404000Digestive Tumor Ward, Chongqing Three Gorges Central Hospital, Chongqing 404000, China
| | - 树东 马
- 南方医科大学南方医院肿瘤科,广东 广州 510515Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| |
Collapse
|
43
|
Kumar VH, Wang H, Kishkurno S, Paturi BS, Nielsen L, Ryan RM. Long-Term Effects of Neonatal Hyperoxia in Adult Mice. Anat Rec (Hoboken) 2018; 301:717-726. [DOI: 10.1002/ar.23766] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 08/02/2017] [Accepted: 10/04/2017] [Indexed: 12/22/2022]
Affiliation(s)
| | - Huamei Wang
- Department of Pediatrics; University at Buffalo; Buffalo New York
| | - Sergei Kishkurno
- Department of Pediatrics; University at Buffalo; Buffalo New York
| | - Babu S Paturi
- Department of Pediatrics; University at Buffalo; Buffalo New York
| | - Lori Nielsen
- Department of Pediatrics; University at Buffalo; Buffalo New York
| | - Rita M. Ryan
- Department of Pediatrics; Medical University of South Carolina; Charleston South Carolina
| |
Collapse
|
44
|
The Role of Nicotinamide Adenine Dinucleotide Phosphate Oxidases in Lung Architecture Remodeling. Antioxidants (Basel) 2017; 6:antiox6040104. [PMID: 29257052 PMCID: PMC5745514 DOI: 10.3390/antiox6040104] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/08/2017] [Accepted: 12/14/2017] [Indexed: 02/07/2023] Open
Abstract
Chronic lung disorders, such as pulmonary artery hypertension (PAH), chronic obstructive pulmonary disease (COPD), asthma and neonatal bronchopulmonary dysplasia (BPD), are characterized by airway and/or vascular remodeling. Despite differences in the pathology, reactive oxygen species (ROS) have been highlighted as a critical contributor to the initiation and development of airway and vascular remodeling. Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (Nox) appear to play a pivotal role in lung signaling, leading to marked changes in pulmonary airway and vascular cell phenotypes, including proliferation, hypertrophy and apoptosis. In this review, we summarized the current literature regarding the role of Nox in the airway and vascular remodeling.
Collapse
|
45
|
Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
Collapse
Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| |
Collapse
|
46
|
Dye JA, Gibbs-Flournoy EA, Richards JH, Norwood J, Kraft K, Hatch GE. Neonatal rat age, sex and strain modify acute antioxidant response to ozone. Inhal Toxicol 2017; 29:291-303. [PMID: 28880688 DOI: 10.1080/08958378.2017.1369602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is the third leading cause of death in the US and its impact continues to increase in women. Oxidant insults during critical periods of early life appear to increase risk of COPD through-out the life course. To better understand susceptibility to early life exposure to oxidant air pollutants we used Fisher (F344), Sprague-Dawley (SD) and Wistar (WIS) male and female neonatal rat pups to assess: (A) if strain (i.e. genetics), sex, or stage of early life development affected baseline lung antioxidant or redox enzyme levels and (B) if these same factors modulated antioxidant responsiveness to acute ozone exposure (1 ppm × 2 h) on post-natal day (PND) 14, 21, or 28. In air-exposed pups from PND14-28, some parameters were unchanged (e.g. uric acid), some decreased (e.g. superoxide dismutase), while others increased (e.g. glutathione recycling enzymes) especially post-weaning. Lung total glutathione levels decreased in F344 and SD pups, but were relatively unchanged in WIS pups. Post-ozone exposure, data suggest that: (1) the youngest (PND14) pups were the most adversely affected; (2) neonatal SD and WIS pups, especially females, were more prone to ozone effects than males of the same age and (3) F344 neonates (females and males) were less susceptible to oxidative lung insult, not unlike F344 adults. Differences in antioxidant levels and responsiveness between sexes and strains and at different periods of development may provide a basis for assessing later life health outcomes - with implications for humans with analogous genetic or dietary-based lung antioxidant deficits.
Collapse
Affiliation(s)
- Janice A Dye
- a National Health and Environmental Research Laboratory (NHEERL) Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park, Durham , NC , USA
| | - Eugene A Gibbs-Flournoy
- b ORISE, Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park , NC , USA
| | - Judy H Richards
- a National Health and Environmental Research Laboratory (NHEERL) Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park, Durham , NC , USA
| | - Joel Norwood
- a National Health and Environmental Research Laboratory (NHEERL) Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park, Durham , NC , USA
| | | | - Gary E Hatch
- a National Health and Environmental Research Laboratory (NHEERL) Office of Research and Development , U.S. Environmental Protection Agency , Research Triangle Park, Durham , NC , USA
| |
Collapse
|
47
|
Perez M, Lee KJ, Cardona HJ, Taylor JM, Robbins ME, Waypa GB, Berkelhamer SK, Farrow KN. Aberrant cGMP signaling persists during recovery in mice with oxygen-induced pulmonary hypertension. PLoS One 2017; 12:e0180957. [PMID: 28792962 PMCID: PMC5549891 DOI: 10.1371/journal.pone.0180957] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 06/23/2017] [Indexed: 12/25/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD), a common complication of preterm birth, is associated with pulmonary hypertension (PH) in 25% of infants with moderate to severe BPD. Neonatal mice exposed to hyperoxia for 14d develop lung disease similar to BPD, with evidence of associated PH. The cyclic guanosine monophosphate (cGMP) signaling pathway has not been well studied in BPD-associated PH. In addition, there is little data about the natural history of hyperoxia-induced PH in mice or the utility of phosphodiesterase-5 (PDE5) inhibition in established disease. C57BL/6 mice were placed in room air or 75% O2 within 24h of birth for 14d, followed by recovery in room air for an additional 7 days (21d). Additional pups were treated with either vehicle or sildenafil for 7d during room air recovery. Mean alveolar area, pulmonary artery (PA) medial wall thickness (MWT), RVH, and vessel density were evaluated at 21d. PA protein from 21d animals was analyzed for soluble guanylate cyclase (sGC) activity, PDE5 activity, and cGMP levels. Neonatal hyperoxia exposure results in persistent alveolar simplification, RVH, decreased vessel density, increased MWT, and disrupted cGMP signaling despite a period of room air recovery. Delayed treatment with sildenafil during room air recovery is associated with improved RVH and decreased PA PDE5 activity, but does not have significant effects on alveolar simplification, PA remodeling, or vessel density. These data are consistent with clinical studies suggesting inconsistent effects of sildenafil treatment in infants with BPD-associated PH.
Collapse
Affiliation(s)
- Marta Perez
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
- * E-mail:
| | - Keng Jin Lee
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| | - Herminio J. Cardona
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| | - Joann M. Taylor
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| | - Mary E. Robbins
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| | - Gregory B. Waypa
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| | - Sara K. Berkelhamer
- Department of Pediatrics, University at Buffalo, Buffalo, NY, United States of America
| | - Kathryn N. Farrow
- Department of Pediatrics, Northwestern University, Chicago, IL, United States of America
| |
Collapse
|
48
|
Lajko M, Cardona HJ, Taylor JM, Farrow KN, Fawzi AA. Photoreceptor oxidative stress in hyperoxia-induced proliferative retinopathy accelerates rd8 degeneration. PLoS One 2017; 12:e0180384. [PMID: 28671996 PMCID: PMC5495396 DOI: 10.1371/journal.pone.0180384] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/14/2017] [Indexed: 12/13/2022] Open
Abstract
To investigate the impact of photoreceptor oxidative stress on photoreceptor degeneration in mice carrying the rd8 mutation (C57BL/6N). We compared the hyperoxia-induced proliferative retinopathy (HIPR) model in two mouse strains (C57BL/6J and C57BL/6N). Pups were exposed to 75% oxygen, starting at birth and continuing for 14 days (P14). Mice were euthanized at P14, or allowed to recover in room air for one day (P15), seven days (P21), or 14 days (P28). We quantified retinal thickness and the length of residual photoreceptors not affected by rosette formation. In addition we explored differences in retinal immunostaining for NADPH oxidase 4 (NOX4), Rac1, vascular endothelium, and activated Mϋller cells. We analyzed photoreceptor oxidative stress using DCF staining in cross sections and quantified NOX4 protein levels using western blotting. C57BL/6N mice in HIPR showed increased oxidative stress, NOX4, and Rac1 in the photoreceptors at P14 and P15 compared to C57BL/6J. In addition, we observed significant progression of photoreceptor degeneration, with significantly accelerated rosette formation in C57BL/6N under HIPR, compared to their room air counterparts. Furthermore, C57BL/6N under HIPR had significantly thinner central retinas than C57BL/6J in HIPR. We did not find a difference in vascular disruption or Mϋller cell activation comparing the two strains in hyperoxia. In HIPR, the C57BL/6N strain carrying the rd8 mutation showed significantly accelerated photoreceptor degeneration, mediated via exacerbated photoreceptor oxidative stress, which we believe relates to Rac1-NOX dysregulation in the setting of Crb1 loss-of-function.
Collapse
Affiliation(s)
- Michelle Lajko
- Department of Ophthalmology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, United States of America
| | - Herminio J. Cardona
- Department of Pediatrics, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, United States of America
| | - Joann M. Taylor
- Department of Pediatrics, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, United States of America
| | - Kathryn N. Farrow
- Department of Pediatrics, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, United States of America
| | - Amani A. Fawzi
- Department of Ophthalmology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, United States of America
- * E-mail:
| |
Collapse
|
49
|
Collins JJP, Tibboel D, de Kleer IM, Reiss IKM, Rottier RJ. The Future of Bronchopulmonary Dysplasia: Emerging Pathophysiological Concepts and Potential New Avenues of Treatment. Front Med (Lausanne) 2017; 4:61. [PMID: 28589122 PMCID: PMC5439211 DOI: 10.3389/fmed.2017.00061] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 05/02/2017] [Indexed: 12/13/2022] Open
Abstract
Yearly more than 15 million babies are born premature (<37 weeks gestational age), accounting for more than 1 in 10 births worldwide. Lung injury caused by maternal chorioamnionitis or preeclampsia, postnatal ventilation, hyperoxia, or inflammation can lead to the development of bronchopulmonary dysplasia (BPD), one of the most common adverse outcomes in these preterm neonates. BPD patients have an arrest in alveolar and microvascular development and more frequently develop asthma and early-onset emphysema as they age. Understanding how the alveoli develop, and repair, and regenerate after injury is critical for the development of therapies, as unfortunately there is still no cure for BPD. In this review, we aim to provide an overview of emerging new concepts in the understanding of perinatal lung development and injury from a molecular and cellular point of view and how this is paving the way for new therapeutic options to prevent or treat BPD, as well as a reflection on current treatment procedures.
Collapse
Affiliation(s)
- Jennifer J P Collins
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Ismé M de Kleer
- Division of Pediatric Pulmonology, Department of Pediatrics, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Irwin K M Reiss
- Division of Neonatology, Department of Pediatrics, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Robbert J Rottier
- Department of Pediatric Surgery, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, Netherlands
| |
Collapse
|
50
|
Yang X, Dong WB, Lei XP, Li QP, Zhang LY, Zhang LP. Resveratrol suppresses hyperoxia-induced nucleocytoplasmic shuttling of SIRT1 and ROS production in PBMC from preterm infants in vitro. J Matern Fetal Neonatal Med 2017; 31:1142-1150. [PMID: 28420272 DOI: 10.1080/14767058.2017.1311310] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xi Yang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wen-Bin Dong
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiao-Ping Lei
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qing-Ping Li
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Lian-Yu Zhang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ling-Ping Zhang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| |
Collapse
|