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Latha K, Rao S, Sakamoto K, Watford WT. Tumor Progression Locus 2 Protects against Acute Respiratory Distress Syndrome in Influenza A Virus-Infected Mice. Microbiol Spectr 2022; 10:e0113622. [PMID: 35980186 PMCID: PMC9604045 DOI: 10.1128/spectrum.01136-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/16/2022] [Indexed: 12/30/2022] Open
Abstract
Excessive inflammation in patients with severe influenza disease may lead to acute lung injury that results in acute respiratory distress syndrome (ARDS). ARDS is associated with alveolar damage and pulmonary edema that severely impair gas exchange, leading to hypoxia. With no existing FDA-approved treatment for ARDS, it is important to understand the factors that lead to virus-induced ARDS development to improve prevention, diagnosis, and treatment. We have previously shown that mice deficient in the serine-threonine mitogen-activated protein kinase, Tpl2 (MAP3K8 or COT), succumb to infection with a typically low-pathogenicity strain of influenza A virus (IAV; HKX31, H3N2 [x31]). The goal of the current study was to evaluate influenza A virus-infected Tpl2-/- mice clinically and histopathologically to gain insight into the disease mechanism. We hypothesized that Tpl2-/- mice succumb to IAV infection due to development of ARDS-like disease and pulmonary dysfunction. We observed prominent signs of alveolar septal necrosis, hyaline membranes, pleuritis, edema, and higher lactate dehydrogenase (LDH) levels in the lungs of IAV-infected Tpl2-/- mice compared to wild-type (WT) mice from 7 to 9 days postinfection (dpi). Notably, WT mice showed signs of regenerating epithelium, indicative of repair and recovery, that were reduced in Tpl2-/- mice. Furthermore, biomarkers associated with human ARDS cases were upregulated in Tpl2-/- mice at 7 dpi, demonstrating an ARDS-like phenotype in Tpl2-/- mice in response to IAV infection. IMPORTANCE This study demonstrates the protective role of the serine-threonine mitogen-activated protein kinase, Tpl2, in influenza virus pathogenesis and reveals that host Tpl2 deficiency is sufficient to convert a low-pathogenicity influenza A virus infection into severe influenza disease that resembles ARDS, both histopathologically and transcriptionally. The IAV-infected Tpl2-/- mouse thereby represents a novel murine model for studying ARDS-like disease that could improve our understanding of this aggressive disease and assist in the design of better diagnostics and treatments.
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Affiliation(s)
- Krishna Latha
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Sanjana Rao
- Department of Genetics, University of Georgia, Athens, Georgia, USA
| | - Kaori Sakamoto
- Department of Pathology, University of Georgia, Athens, Georgia, USA
| | - Wendy T. Watford
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
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2
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He WF, Qin R, Gao YH, Zhou J, Wei JJ, Liu J, Hou XF, Ma HP, Xian CJ, Li XY, Chen KM. The interdependent relationship between the nitric oxide signaling pathway and primary cilia in pulse electromagnetic field-stimulated osteoblastic differentiation. FASEB J 2022; 36:e22376. [PMID: 35616355 DOI: 10.1096/fj.202101577rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/11/2022]
Abstract
Pulsed electromagnetic fields (PEMFs) have long been recognized being safe and effective in treating bone fracture nonunion and osteoporosis. However, the mechanism of osteogenic action of PEMFs is still unclear. While primary cilia are reported to be a sensory organelle for PEMFs, and nitric oxide (NO) plays an indispensable role in osteogenic effect of PEMFs, the relationship between NO and primary cilia is unknown. In this study, effects of treatment with 50 Hz 0.6 mT PEMFs on osteogenic differentiation and mineralization, NO secretion, and ciliary location of specific proteins were examined in rat calvarial osteoblasts (ROBs) with normal or abrogated primary cilia. It was found that PEMFs stimulated the osteogenic differentiation by activating the NOS/NO/sGC/cGMP/PKG signaling pathway, which need the existence of primary cilia. All components of the signaling pathway including iNOS, eNOS, sGC, PKG-1, and PKG-2 were localized to primary cilia, and eNOS was phosphorylated inside the primary cilia. Besides, primary cilia were elongated significantly by PEMF treatment and changed dynamically with the activation NO/cGMP pathway. When the pathway was blocked by L-NAME, PEMFs could no longer elongate the primary cilia and stimulate the osteoblastic differentiation. Thus, this study for the first time observed activation of the NO/cGMP signaling pathway in ciliary compartment of osteoblasts, and PEMFs could not stimulate the osteoblastic differentiation if the NO signaling pathway was blocked or the ciliogenesis was inhibited. Our findings indicate the interdependent relationship between NO and primary cilia in the PEMF-promoted osteogenesis.
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Affiliation(s)
- Wen-Fang He
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China.,Department of Bioengineering, School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, P. R. China.,Key Laboratory of Stem Cells and Gene Drugs of Gansu Province, Lanzhou, P. R. China
| | - Rong Qin
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Yu-Hai Gao
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Jian Zhou
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Juan-Juan Wei
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Jing Liu
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Xue-Feng Hou
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Hui-Ping Ma
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China
| | - Cory J Xian
- UniSA Clinical and Health Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Xue-Yan Li
- Department of Bioengineering, School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, P. R. China
| | - Ke-Ming Chen
- Fundamental Medical Science Research Laboratories, The 940th Hospital of Joint Logistic Support Force, People's Liberation Army of China, Lanzhou, P. R. China.,Key Laboratory of Stem Cells and Gene Drugs of Gansu Province, Lanzhou, P. R. China
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3
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Sahni M, Bhandari V. Patho-mechanisms of the origins of bronchopulmonary dysplasia. Mol Cell Pediatr 2021; 8:21. [PMID: 34894313 PMCID: PMC8665964 DOI: 10.1186/s40348-021-00129-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/15/2021] [Indexed: 12/17/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) continues to be one of the most common complications of prematurity, despite significant advancement in neonatology over the last couple of decades. The new BPD is characterized histopathologically by impaired lung alveolarization and dysregulated vascularization. With the increased survival of extremely preterm infants, the risk for the development of BPD remains high, emphasizing the continued need to understand the patho-mechanisms that play a role in the development of this disease. This brief review summarizes recent advances in our understanding of the maldevelopment of the premature lung, highlighting recent research in pathways of oxidative stress-related lung injury, the role of placental insufficiency, growth factor signaling, the extracellular matrix, and microRNAs.
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Affiliation(s)
- Mitali Sahni
- Pediatrix Medical Group, Sunrise Children's Hospital, Las Vegas, NV, USA.,University of Nevada, Las Vegas, NV, USA
| | - Vineet Bhandari
- Neonatology Research Laboratory, Education and Research Building, Cooper University Hospital, One Cooper Plaza, Camden, NJ, 08103, USA.
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Salimi U, Dummula K, Tucker MH, Dela Cruz CS, Sampath V. Postnatal Sepsis and Bronchopulmonary Dysplasia in Premature Infants: Mechanistic Insights into "New BPD". Am J Respir Cell Mol Biol 2021; 66:137-145. [PMID: 34644520 DOI: 10.1165/rcmb.2021-0353ps] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a debilitating disease in premature infants resulting from lung injury that disrupts alveolar and pulmonary vascular development. Despite the use of lung-protective ventilation and targeted oxygen therapy, BPD rates have not significantly changed over the last decade. Recent evidence suggests that sepsis and conditions initiating the systemic inflammatory response syndrome in preterm infants are key risk factors for BPD. However, the mechanisms by which sepsis-associated systemic inflammation and microbial dissemination program aberrant lung development are not fully understood. Progress has been made within the last 5 years with the inception of animal models allowing mechanistic investigations into neonatal acute lung injury and alveolar remodeling due to endotoxemia and NEC. These recent studies begin to unravel the pathophysiology of early endothelial immune activation via pattern recognition receptors such as Toll Like Receptor 4 and disruption of critical lung developmental processes such as angiogenesis, extracellular matrix deposition, and ultimately alveologenesis. Here we review scientific evidence from preclinical models of neonatal sepsis-induced lung injury to new data emerging from clinical literature.
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Affiliation(s)
- Umar Salimi
- Yale University, 5755, Pediatrics, New Haven, Connecticut, United States
| | - Krishna Dummula
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Megan H Tucker
- Children's Mercy, 4204, Pediatrics, Kansas City, Missouri, United States
| | - Charles S Dela Cruz
- Yale University, Pulmonary and Critical Care Medicine, New Haven, Connecticut, United States
| | - Venkatesh Sampath
- Children\'s Mercy Hospitals and Clinics, 4204, Pediatrics, Kansas City, Missouri, United States;
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Iqubal A, Iqubal MK, Ahmed M, Haque SE. Natural Products, a Potential Therapeutic Modality in Management and Treatment of nCoV-19 Infection: Preclinical and Clinical Based Evidence. Curr Pharm Des 2021; 27:1153-1169. [DOI: 10.2174/1381612827999210111190855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/13/2020] [Indexed: 11/22/2022]
Abstract
A recent outbreak of novel coronavirus (nCoV-19) has put an enormous burden on global public
health. Millions of people were affected by this pandemic, and as of now, no effective antiviral drug has been
found for the management of this situation. Cytokine storm, acute respiratory distress, hypoxia and multi-organ
failure are hallmark clinical conditions of this disease. Trials for several investigational and repurposed drugs
are being conducted, but none of them were found to be safe and effective. However, for the critically ill patient,
plasma therapy, dexamethasone, and remdesivir are included in the treatment protocol. For a long time,
various natural drugs have been used as antiviral agents in Indian and Chinese traditional medicines, which can
be explored as a potential therapeutic option in such situation. It is, therefore, speculated that the proper screening
and standardization of these medicines can be a breakthrough in the management and treatment of nCoV-19
infection. As natural products possess antioxidant, anti-inflammatory, anti-apoptotic, immunomodulatory properties
and also specifically act on various viral enzymatic machinery and affect their replication process, thus
they may be useful as alternatives in relieving symptoms and treatment of nCoV-19 infection. However, only
on the basis of their traditional value, discrimination and off-label use of these natural drugs must be prevented,
and robust preclinical and clinical data along with appropriate guidelines are needed for them to enter into clinical
practice.
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Affiliation(s)
- Ashif Iqubal
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Mohammad K. Iqubal
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Musheer Ahmed
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Syed E. Haque
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
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α1,3-Fucosyltransferase-IX, an enzyme of pulmonary endogenous lung stem cell marker SSEA-1, alleviates experimental bronchopulmonary dysplasia. Pediatr Res 2021; 89:1126-1135. [PMID: 32303051 DOI: 10.1038/s41390-020-0891-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 02/19/2020] [Accepted: 03/19/2020] [Indexed: 11/08/2022]
Abstract
BACKGROUND Endogenous pulmonary stem cells (PSCs) play an important role in lung development and repair; however, little is known about their role in bronchopulmonary dysplasia (BPD). We hypothesize that an endogenous PSC marker stage-specific embryonic antigen-1 (SSEA-1) and its enzyme, α1,3-fucosyltransferase IX (FUT9) play an important role in decreasing inflammation and restoring lung structure in experimental BPD. METHODS We studied the expression of SSEA-1, and its enzyme FUT9, in wild-type (WT) C57BL/6 mice, in room air and hyperoxia. Effects of intraperitoneal administration of recombinant human FUT9 (rhFUT9) on lung airway and parenchymal inflammation, alveolarization, and apoptosis were evaluated. RESULTS On hyperoxia exposure, SSEA-1 significantly decreased at postnatal day 14 in hyperoxia-exposed BPD mice, accompanied by a decrease in FUT9. BPD and respiratory distress syndrome (RDS) in human lungs showed decreased expression of SSEA-1 as compared to their term controls. Importantly, intraperitoneal administration of FUT9 in the neonatal BPD mouse model resulted in significant decrease in pulmonary airway (but not lung parenchymal) inflammation, alveolar-capillary leakage, alveolar simplification, and cell death in the hyperoxia-exposed BPD mice. CONCLUSIONS An important role of endogenous PSC marker SSEA-1 and its enzyme FUT9 is demonstrated, indicating early systemic intervention with FUT9 as a potential therapeutic option for BPD. IMPACT Administration of rhFUT9, an enzyme of endogenous stem cell marker SSEA-1, reduces pulmonary airway (but not lung parenchymal) inflammation, alveolar-capillary leak and cell death in the BPD mouse model. SSEA-1 is reported for the first time in experimental BPD models, and in human RDS and BPD. rhFUT9 treatment ameliorates hyperoxia-induced lung injury in a developmentally appropriate BPD mouse model. Our results have translational potential as a therapeutic modality for BPD in the developing lung.
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Ahmad S, Arora S, Khan S, Mohsin M, Mohan A, Manda K, Syed MA. Vitamin D and its therapeutic relevance in pulmonary diseases. J Nutr Biochem 2020; 90:108571. [PMID: 33388351 DOI: 10.1016/j.jnutbio.2020.108571] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/20/2020] [Accepted: 12/24/2020] [Indexed: 01/15/2023]
Abstract
Vitamin D is customarily involved in maintaining bone and calcium homeostasis. However, contemporary studies have identified the implication of vitamin D in several cellular processes including cellular proliferation, differentiation, wound healing, repair and regulatory systems inclusive of host defence, immunity, and inflammation. Multiple studies have indicated corelations between low serum levels of vitamin D, perturbed pulmonary functions and enhanced incidences of inflammatory diseases. Almost all of the pulmonary diseases including acute lung injury, cystic fibrosis, asthma, COPD, Pneumonia and Tuberculosis, all are inflammatory in nature. Studies have displayed strong inter-relations with vitamin D deficiency and progression of lung disorders; however, the underlying mechanism is still unknown. Vitamin D has emerged to possess inhibiting effects on pulmonary inflammation while exaggerating innate immune defenses by strongly influencing functions of inflammatory cells including dendritic cells, monocyte/macrophages, T cells, and B cells along with structural epithelial cells. This review dissects the effects of vitamin D on the inflammatory cells and their therapeutic relevance in pulmonary diseases. Although, the data obtained is very limited and needs further corroboration but presents an exciting area of further research. This is because of its ease of supplementation and development of personalized medicine which could lead us to an effective adjunct and cost-effective method of therapeutic modality for highly fatal pulmonary diseases.
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Affiliation(s)
- Shaniya Ahmad
- Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India; Institute of Nuclear Medicine and Allied Science, Defence Research and Development Organisation, New Delhi, India
| | - Shweta Arora
- Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Salman Khan
- Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Mohd Mohsin
- Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India
| | - Anant Mohan
- Department of Pulmonary Medicine, AIIMS, New Delhi, India
| | - Kailash Manda
- Institute of Nuclear Medicine and Allied Science, Defence Research and Development Organisation, New Delhi, India
| | - Mansoor Ali Syed
- Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi, India.
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Signaling Pathways Involved in the Development of Bronchopulmonary Dysplasia and Pulmonary Hypertension. CHILDREN-BASEL 2020; 7:children7080100. [PMID: 32824651 PMCID: PMC7465273 DOI: 10.3390/children7080100] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 12/31/2022]
Abstract
The alveolar and vascular developmental arrest in the premature infants poses a major problem in the management of these infants. Although, with the current management, the survival rate has improved in these infants, but bronchopulmonary dysplasia (BPD) is a serious complication associated with a high mortality rate. During the neonatal developmental period, these infants are vulnerable to stress. Hypoxia, hyperoxia, and ventilation injury lead to oxidative and inflammatory stress, which induce further damage in the lung alveoli and vasculature. Development of pulmonary hypertension (PH) in infants with BPD worsens the prognosis. Despite considerable progress in the management of premature infants, therapy to prevent BPD is not yet available. Animal experiments have shown deregulation of multiple signaling factors such as transforming growth factorβ (TGFβ), connective tissue growth factor (CTGF), fibroblast growth factor 10 (FGF10), vascular endothelial growth factor (VEGF), caveolin-1, wingless & Int-1 (WNT)/β-catenin, and elastin in the pathogenesis of BPD. This article reviews the signaling pathways entailed in the pathogenesis of BPD associated with PH and the possible management.
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9
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Almatroodi SA, Almatroudi A, Alsahli MA, Aljasir MA, Syed MA, Rahmani AH. Epigallocatechin-3-Gallate (EGCG), an Active Compound of Green Tea Attenuates Acute Lung Injury Regulating Macrophage Polarization and Krüpple-Like-Factor 4 (KLF4) Expression. Molecules 2020; 25:molecules25122853. [PMID: 32575718 PMCID: PMC7356789 DOI: 10.3390/molecules25122853] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 12/25/2022] Open
Abstract
Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) are serious clinical complications with a high frequency of morbidity and mortality. The initiation and amplification of inflammation is a well-known aspect in the pathogenesis of ALI and related disorders. Therefore, inhibition of the inflammatory mediators could be an ideal approach to prevent ALI. Epigallocatechin-3-gallate (EGCG), a major constituent of green tea, has been shown to have protective effects on oxidative damage and anti-inflammation. The goal of the present study was to determine whether EGCG improves phenotype and macrophage polarisation in LPS-induced ALI. C57BL/6 mice were given two doses of EGCG (15 mg/kg) intraperitoneally (IP) 1 h before and 3 h after LPS instillation (2 mg/kg). EGCG treatment improved histopathological lesions, Total Leucocyte count (TLC), neutrophils infiltration, wet/dry ratio, total proteins and myeloperoxidase (MPO) activity in LPS-induced lung injury. The results displayed that EGCG reduced LPS-induced ALI as it modulates macrophage polarisation towards M2 status. Furthermore, EGCG also reduced the expression of proinflammatory M1 mediators iNOS TNF-α, IL-1β and IL-6 in the LPS administered lung microenvironment. In addition, it increased the expression of KLF4, Arg1 and ym1, known to augment the M2 phenotype of macrophages. EGCG also alleviated the expression of 8-OHdG, nitrotyrosine, showing its ability to inhibit oxidative damage. TREM1 in the lung tissue and improved lung regenerative capacity by enhancing Ki67, PCNA and Ang-1 protein expression. Together, these results proposed the protective properties of EGCG against LPS-induced ALI in may be attributed to the suppression of M1/M2 macrophages subtype ratio, KLF4 augmentation, lung cell regeneration and regulating oxidative damage in the LPS-induced murine ALI.
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Affiliation(s)
- Saleh A. Almatroodi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Ahmad Almatroudi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mohammed A. Alsahli
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mohammad A. Aljasir
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
| | - Mansoor Ali Syed
- Translational Research Lab, Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi 110025, India;
| | - Arshad Husain Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia; (S.A.A.); (A.A.); (M.A.A.); (M.A.A.)
- Correspondence:
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Das P, Acharya S, Shah D, Agarwal B, Prahaladan V, Bhandari V. Chitin Analog AVR-25 Prevents Experimental Bronchopulmonary Dysplasia. J Pediatr Intensive Care 2020; 9:225-232. [PMID: 32685255 DOI: 10.1055/s-0040-1709994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/27/2020] [Indexed: 12/12/2022] Open
Abstract
Infants born extremely preterm are at a high risk of developing bronchopulmonary dysplasia (BPD) which is characterized by large, simplified alveoli, increased inflammation, disrupted and dysregulated vasculogenesis, decreased cell proliferation, and increased cell death in the lungs. Due to lack of specific drug treatments to combat this condition, BPD and its long-term complications have taken a significant toll of healthcare resources. AVR-25, a novel immune modulator experimental compound, was able to partially recover the pulmonary phenotype in the hyperoxia-induced experimental mouse model of BPD. We anticipate that AVR-25 will have therapeutic potential for managing human BPD.
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Affiliation(s)
- Pragnya Das
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | - Suchismita Acharya
- Acceleration Laboratory, University of North Texas Health Science Center, Fort Worth, Texas, United States.,AyuVis Research Inc, Fort Worth, Texas, United States
| | - Dilip Shah
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | | | - Varsha Prahaladan
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
| | - Vineet Bhandari
- Department of Pediatrics, Division of Neonatology, Drexel University, Philadelphia, Pennsylvania, United States
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11
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Lin H, Wang X. The effects of gasotransmitters on bronchopulmonary dysplasia. Eur J Pharmacol 2020; 873:172983. [PMID: 32017936 DOI: 10.1016/j.ejphar.2020.172983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 02/06/2023]
Abstract
Bronchopulmonary dysplasia (BPD), which remains a major clinical problem for preterm infants, is caused mainly by hyperoxia, mechanical ventilation and inflammation. Many approaches have been developed with the aim of decreasing the incidence of or alleviating BPD, but effective methods are still lacking. Gasotransmitters, a type of small gas molecule that can be generated endogenously, exert a protective effect against BPD-associated lung injury; nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) are three such gasotransmitters. The protective effects of NO have been extensively studied in animal models of BPD, but the results of these studies are inconsistent with those of clinical trials. NO inhalation seems to have no effect on BPD, although side effects have been reported. NO inhalation is not recommended for BPD treatment in preterm infants, except those with severe pulmonary hypertension. Both CO and H2S decreased lung injury in BPD rodent models in preclinical studies. Another small gas molecule, hydrogen, exerts a protective effect against BPD. The nuclear factor erythroid-derived 2 (Nrf2)/heme oxygenase-1 (HO-1) axis seems to play a central role in the protective effect of these gasotransmitters on BPD. Gasotransmitters play important roles in mammals, but further clinical trials are needed to explore their effects on BPD.
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Affiliation(s)
- Hai Lin
- Department of Traditional Chinese Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, PR China
| | - Xinbao Wang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, PR China.
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12
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Leary S, Das P, Ponnalagu D, Singh H, Bhandari V. Genetic Strain and Sex Differences in a Hyperoxia-Induced Mouse Model of Varying Severity of Bronchopulmonary Dysplasia. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:999-1014. [PMID: 30794808 DOI: 10.1016/j.ajpath.2019.01.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/21/2018] [Accepted: 01/24/2019] [Indexed: 01/11/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is a disease prevalent in preterm babies with a need for supplemental oxygen, resulting in impaired lung development and dysregulated vascularization. Epidemiologic studies have shown that males are more prone to BPD and have a delayed recovery compared with females, for reasons unknown. Herein, we tried to recapitulate mild, moderate, and severe BPD, using two different strains of mice, in males and females: CD1 (outbred) and C57BL/6 (inbred). Aside from higher body weight in the CD1 strain, there were no other gross morphologic differences with respect to alveolar development between the two strains. With respect to lung morphology after oxygen exposure, females had less injury with better preservation of alveolar chord length and decreased alveolar protein leak and inflammatory cells in the bronchoalveolar lavage fluid. In addition, housekeeping genes, which are routinely used as loading controls, were expressed differently in males and females. In the BPD mouse model, gonadotropin-releasing hormone was increased in females compared with males. Specific miRNAs (miR-146 and miR-34a) were expressed differently in the sexes. In the severe BPD mouse model, administering miR-146 mimic to males attenuated lung damage, whereas administering miR-146 inhibitor to females increased pulmonary injury.
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Affiliation(s)
- Sean Leary
- Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Pragnya Das
- Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Devasena Ponnalagu
- Department of Pharmacology, Physiology and Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Harpreet Singh
- Department of Pharmacology, Physiology and Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Vineet Bhandari
- Department of Pediatrics, Drexel University College of Medicine, Philadelphia, Pennsylvania; Division of Neonatology, St. Christopher's Hospital for Children, Philadelphia, Pennsylvania.
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Saternos HC, AbouAlaiwi WA. Signaling interplay between primary cilia and nitric oxide: A mini review. Nitric Oxide 2018; 80:108-112. [PMID: 30099097 DOI: 10.1016/j.niox.2018.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/01/2018] [Accepted: 08/06/2018] [Indexed: 01/12/2023]
Abstract
New discoveries into the functional role of primary cilia are on the rise. In little more than 20 years, research has shown the once vestigial organelle is a signaling powerhouse involved in a vast number of essential cellular processes. In the same decade that interest in primary cilia was burgeoning, nitric oxide won molecule of the year and a Nobel prize for its role as a near ubiquitous signaling molecule. Although primary cilia and nitric oxide are both involved in signaling, a direct relationship has not been investigated; however, after a quick review of the literature, parallels between their functions can be drawn. This review aims to suggest a possible interplay between primary cilia and nitric oxide signaling especially in the areas of vascular tissue homeostasis and cellular proliferation.
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Affiliation(s)
- Hannah C Saternos
- University of Toledo, College of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology and Experimental Therapeutics, USA
| | - Wissam A AbouAlaiwi
- University of Toledo, College of Pharmacy and Pharmaceutical Sciences, Department of Pharmacology and Experimental Therapeutics, USA.
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Chaubey S, Thueson S, Ponnalagu D, Alam MA, Gheorghe CP, Aghai Z, Singh H, Bhandari V. Early gestational mesenchymal stem cell secretome attenuates experimental bronchopulmonary dysplasia in part via exosome-associated factor TSG-6. Stem Cell Res Ther 2018; 9:173. [PMID: 29941022 PMCID: PMC6019224 DOI: 10.1186/s13287-018-0903-4] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/25/2018] [Accepted: 05/13/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are promising tools for the treatment of human lung disease and other pathologies relevant to newborn medicine. Recent studies have established MSC exosomes (EXO), as one of the main therapeutic vectors of MSCs in mouse models of multifactorial chronic lung disease of preterm infants, bronchopulmonary dysplasia (BPD). However, the mechanisms underlying MSC-EXO therapeutic action are not completely understood. Using a neonatal mouse model of human BPD, we evaluated the therapeutic efficiency of early gestational age (GA) human umbilical cord (hUC)-derived MSC EXO fraction and its exosomal factor, tumor necrosis factor alpha-stimulated gene-6 (TSG-6). METHODS Conditioned media (CM) and EXO fractions were isolated from 25 and 30 weeks GA hUC-MSC cultures grown in serum-free media (SFM) for 24 h. Newborn mice were exposed to hyperoxia (> 95% oxygen) and were given intraperitoneal injections of MSC-CM or MSC-CM EXO fractions at postnatal (PN) day 2 and PN4. They were then returned to room air until PN14 (in a mouse model of severe BPD). The treatment regime was followed with (rh)TSG-6, TSG-6-neutralizing antibody (NAb), TSG-6 (si)RNA-transfected MSC-CM EXO and their appropriate controls. Echocardiography was done at PN14 followed by harvesting of lung, heart and brain for assessment of pathology parameters. RESULTS Systemic administration of CM or EXO in the neonatal BPD mouse model resulted in robust improvement in lung, cardiac and brain pathology. Hyperoxia-exposed BPD mice exhibited pulmonary inflammation accompanied by alveolar-capillary leakage, increased chord length, and alveolar simplification, which was ameliorated by MSC CM/EXO treatment. Pulmonary hypertension and right ventricular hypertrophy was also corrected. Cell death in brain was decreased and the hypomyelination reversed. Importantly, we detected TSG-6, an immunomodulatory glycoprotein, in EXO. Administration of TSG-6 attenuated BPD and its associated pathologies, in lung, heart and brain. Knockdown of TSG-6 by NAb or by siRNA in EXO abrogated the therapeutic effects of EXO, suggesting TSG-6 as an important therapeutic molecule. CONCLUSIONS Preterm hUC-derived MSC-CM EXO alleviates hyperoxia-induced BPD and its associated pathologies, in part, via exosomal factor TSG-6. The work indicates early systemic intervention with TSG-6 as a robust option for cell-free therapy, particularly for treating BPD.
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Affiliation(s)
- Sushma Chaubey
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Sam Thueson
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Devasena Ponnalagu
- Department of Pharmacology & Physiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Mohammad Afaque Alam
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Ciprian P Gheorghe
- Department of Obstetrics and Gynecology, Loma Linda University School of Medicine, 11370 Anderson Street, Loma Linda, CA, 92354, USA
| | - Zubair Aghai
- Divison of Neonatology, Department of Pediatrics, Thomas Jefferson University Hospital, 132S, 10th Street, Philadelphia, PA, 19107, USA
| | - Harpreet Singh
- Department of Pharmacology & Physiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA.,Department of Medicine, Division of Cardiology, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA
| | - Vineet Bhandari
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, Drexel University College of Medicine, 245 N 15th Street, Philadelphia, PA, 19102, USA.
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Pabelick CM, Thompson MA, Britt RD. Effects of Hyperoxia on the Developing Airway and Pulmonary Vasculature. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 967:179-194. [PMID: 29047087 DOI: 10.1007/978-3-319-63245-2_11] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although it is necessary and part of standard practice, supplemental oxygen (40-90% O2) or hyperoxia is a significant contributing factor to development of bronchopulmonary dysplasia, persistent pulmonary hypertension, recurrent wheezing, and asthma in preterm infants. This chapter discusses hyperoxia and the role of redox signaling in the context of neonatal lung growth and disease. Here, we discuss how hyperoxia promotes dysfunction in the airway and the known redox-mediated mechanisms that are important for postnatal vascular and alveolar development. Whether in the airway or alveoli, redox pathways are important and greatly influence the neonatal lung.
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Affiliation(s)
- Christina M Pabelick
- Department of Anesthesiology, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA. .,Departments Physiology and Biomedical Engineering, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA.
| | - Michael A Thompson
- Department of Anesthesiology, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA
| | - Rodney D Britt
- Departments Physiology and Biomedical Engineering, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA
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Oak P, Hilgendorff A. The BPD trio? Interaction of dysregulated PDGF, VEGF, and TGF signaling in neonatal chronic lung disease. Mol Cell Pediatr 2017; 4:11. [PMID: 29116547 PMCID: PMC5676585 DOI: 10.1186/s40348-017-0076-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 10/17/2017] [Indexed: 12/26/2022] Open
Abstract
The development of neonatal chronic lung disease (nCLD), i.e., bronchopulmonary dysplasia (BPD) in preterm infants, significantly determines long-term outcome in this patient population. Risk factors include mechanical ventilation and oxygen toxicity impacting on the immature lung resulting in impaired alveolarization and vascularization. Disease development is characterized by inflammation, extracellular matrix remodeling, and apoptosis, closely intertwined with the dysregulation of growth factor signaling. This review focuses on the causes and consequences of altered signaling in central pathways like transforming growth factor (TGF), platelet-derived growth factor (PDGF), and vascular endothelial growth factor (VEGF) driving these above indicated processes, i.e., inflammation, matrix remodeling, and vascular development. We emphasize the shared and distinct role of these pathways as well as their interconnection in disease initiation and progression, generating important knowledge for the development of future treatment strategies.
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Affiliation(s)
- Prajakta Oak
- Comprehensive Pneumology Center, University Hospital of the University of Munich and Helmholtz Zentrum Muenchen, Munich, Germany
| | - Anne Hilgendorff
- Comprehensive Pneumology Center, University Hospital of the University of Munich and Helmholtz Zentrum Muenchen, Munich, Germany.
- Department of Neonatology, Perinatal Center Grosshadern, Ludwig-Maximilians University, Munich, Germany.
- Center for Comprehensive Developmental Care, Dr. von Haunersches Children's Hospital University, Hospital Ludwig-Maximilians University, Munich, Germany.
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