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Hargitai R, Parráková L, Szatmári T, Monfort-Lanzas P, Galbiati V, Audouze K, Jornod F, Staal YCM, Burla S, Chary A, Gutleb AC, Lumniczky K, Vandebriel RJ, Gostner JM. Chemical respiratory sensitization-Current status of mechanistic understanding, knowledge gaps and possible identification methods of sensitizers. FRONTIERS IN TOXICOLOGY 2024; 6:1331803. [PMID: 39135743 PMCID: PMC11317441 DOI: 10.3389/ftox.2024.1331803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 05/27/2024] [Indexed: 08/15/2024] Open
Abstract
Respiratory sensitization is a complex immunological process eventually leading to hypersensitivity following re-exposure to the chemical. A frequent consequence is occupational asthma, which may occur after long latency periods. Although chemical-induced respiratory hypersensitivity has been known for decades, there are currently no comprehensive and validated approaches available for the prospective identification of chemicals that induce respiratory sensitization, while the expectations of new approach methodologies (NAMs) are high. A great hope is that due to a better understanding of the molecular key events, new methods can be developed now. However, this is a big challenge due to the different chemical classes to which respiratory sensitizers belong, as well as because of the complexity of the response and the late manifestation of symptoms. In this review article, the current information on respiratory sensitization related processes is summarized by introducing it in the available adverse outcome pathway (AOP) concept. Potentially useful models for prediction are discussed. Knowledge gaps and gaps of regulatory concern are identified.
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Affiliation(s)
- Rita Hargitai
- Unit of Radiation Medicine, Department of Radiobiology and Radiohygiene, National Centre for Public Health and Pharmacy (NCPHP), Budapest, Hungary
| | - Lucia Parráková
- Biochemical Immunotoxicology Group, Institute of Medical Biochemistry, Medical University of Innsbruck (MUI), Innsbruck, Austria
| | - Tünde Szatmári
- Unit of Radiation Medicine, Department of Radiobiology and Radiohygiene, National Centre for Public Health and Pharmacy (NCPHP), Budapest, Hungary
| | - Pablo Monfort-Lanzas
- Biochemical Immunotoxicology Group, Institute of Medical Biochemistry, Medical University of Innsbruck (MUI), Innsbruck, Austria
- Institute of Bioinformatics, Medical University of Innsbruck (MUI), Innsbruck, Austria
| | - Valentina Galbiati
- Laboratory of Toxicology, Department of Pharmacological and Biomolecular Sciences “Rodolfo Paoletti”, Università Degli Studi di Milano (UNIMI), Milano, Italy
| | | | | | - Yvonne C. M. Staal
- Centre for Health Protection, National Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Sabina Burla
- Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Aline Chary
- Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Arno C. Gutleb
- Luxembourg Institute of Science and Technology (LIST), Belvaux, Luxembourg
| | - Katalin Lumniczky
- Unit of Radiation Medicine, Department of Radiobiology and Radiohygiene, National Centre for Public Health and Pharmacy (NCPHP), Budapest, Hungary
| | - Rob J. Vandebriel
- Centre for Health Protection, National Institute of Public Health and the Environment (RIVM), Bilthoven, Netherlands
| | - Johanna M. Gostner
- Biochemical Immunotoxicology Group, Institute of Medical Biochemistry, Medical University of Innsbruck (MUI), Innsbruck, Austria
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Huang X, Zhou Y, Li Y, Wang T, Chen Y, Zhou Y, Zhou X, Liu Q. Astragaloside IV inhibits inflammation caused by influenza virus via reactive oxygen species/NOD-like receptor thermal protein domain associated protein 3/Caspase-1 signaling pathway. Immun Inflamm Dis 2024; 12:e1309. [PMID: 38860765 PMCID: PMC11165686 DOI: 10.1002/iid3.1309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/17/2024] [Accepted: 05/20/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Astragaloside IV (AS-IV) is the most active monomer in the traditional Chinese herbal medicine Radix Astragali, which has a wide range of antiviral, anti-inflammatory, and antifibrosis pharmacological effects, and shows protective effects in acute lung injury. METHODS This study utilized the immunofluorescence, flow cytometry, enzyme-linked immunosorbent assay, quantitative reverse transcription-polymerase chain reaction, western blot, and hematoxylin and eosin staining methods to investigate the mechanism of AS-IV in reducing viral pneumonia caused by influenza A virus in A549 cells and BALB/c mice. RESULTS The results showed that AS-IV suppressed reactive oxygen species production in influenza virus-infected A549 cells in a dose-dependent manner, and subsequently inhibited the activation of nucleotide-binding oligomerization domain-like receptor thermal protein domain associated protein 3 inflammasome and Caspase-1, decreased interleukin (IL) -1β and IL-18 secretion. In BALB/c mice infected with Poly (I:C), oral administration of AS-IV can significantly reduce Poly (I:C)-induced acute pneumonia and lung pathological injury. CONCLUSIONS AS-IV alleviates the inflammatory response induced by influenza virus in vitro and lung flammation and structural damage caused by poly (I:C) in vivo.
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Affiliation(s)
- Xiaoli Huang
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
- Central Laboratory, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Yifan Zhou
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
- Central Laboratory, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Yi Li
- Central Laboratory, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
- Department of Cardio‐Thoracic Surgery, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Ting Wang
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Yandong Chen
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Yuanhong Zhou
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Xiaolin Zhou
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
| | - Qiang Liu
- Department of Infectious Diseases, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
- Central Laboratory, The First College of Clinical Medical ScienceChina Three Gorges University & Yichang Central People's HospitalYichangChina
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Kim J, Rouadi PW. The Relationship of Climate Change to Rhinitis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024; 12:1479-1483. [PMID: 38636591 DOI: 10.1016/j.jaip.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/20/2024]
Abstract
Evidence is mounting that climate change is having a significant impact on exacerbations of rhinitis. Concomitantly, the prevalence of allergic rhinitis is increasing at an accelerated rate. We herein explore the impact of carbon dioxide, barometric pressure and humidity changes, and anthropogenic pollutants on aeroallergens and rhinitis hypersensitivity. Important immune mechanisms underlying the climate-driven effects on rhinitis are discussed. Also, climate change is shifting ecological zones and seasons, increasing weather extremes, and altering regional atmospheric and environmental conditions. The direct impact of these factors on promoting allergic and nonallergic rhinitis is reviewed.
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Affiliation(s)
- Jean Kim
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Md; Department of Medicine: Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, Md.
| | - Philip W Rouadi
- Department of Otolaryngology-Head and Neck Surgery, Dar Al Shifa Hospital, Kuwait City, Kuwait
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Mago E, Zhao X, Zhang W, Shao Q, Li P, Huang S, Ding X, Liu H, Sun T, He F, Weng D. RIP1 kinase inactivation protects against LPS-induced acute respiratory distress syndrome in mice. Int Immunopharmacol 2024; 133:112060. [PMID: 38652970 DOI: 10.1016/j.intimp.2024.112060] [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: 12/26/2023] [Revised: 03/22/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by lung tissue oedema and inflammatory cell infiltration, with limited therapeutic interventions available. Receptor-interacting protein kinase 1 (RIPK1), a critical regulator of cell death and inflammation implicated in many diseases, is not fully understood in the context of ARDS. In this study, we employed RIP1 kinase-inactivated (Rip1K45A/K45A) mice and two distinct RIPK1 inhibitors to investigate the contributions of RIP1 kinase activity in lipopolysaccharide (LPS)-induced ARDS pathology. Our results indicated that RIPK1 kinase inactivation, achieved through both genetic and chemical approaches, significantly attenuated LPS-induced ARDS pathology, as demonstrated by reduced polymorphonuclear neutrophil percentage (PMN%) in alveolar lavage fluid, expression of inflammatory and fibrosis-related factors in lung tissues, as well as histological examination. Results by tunnel staining and qRT-PCR analysis indicated that RIPK1 kinase activity played a role in regulating cell apoptosis and inflammation induced by LPS administration in lung tissue. In summary, employing both pharmacological and genetic approaches, this study demonstrated that targeted RIPK1 kinase inactivation attenuates the pathological phenotype induced by LPS inhalation in an ARDS mouse model. This study enhances our understanding of the therapeutic potential of RIPK1 kinase modulation in ARDS, providing insights for the pathogenesis of ARDS.
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Affiliation(s)
- Emmauel Mago
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Xunan Zhao
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Weigao Zhang
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Qianchao Shao
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Peiqi Li
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Shuxian Huang
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Xinyu Ding
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Hu Liu
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China
| | - Tingzhe Sun
- School of Life Sciences, Anqing Normal University, Anqing 246133, Anhui, China
| | - Fei He
- Department of Emergency Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China.
| | - Dan Weng
- School of Environmental and Biological Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei Street, Nanjing 210094, China.
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Habtemariam S. Anti-Inflammatory Therapeutic Mechanisms of Isothiocyanates: Insights from Sulforaphane. Biomedicines 2024; 12:1169. [PMID: 38927376 PMCID: PMC11200786 DOI: 10.3390/biomedicines12061169] [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: 04/23/2024] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024] Open
Abstract
Isothiocyanates (ITCs) belong to a group of natural products that possess a highly reactive electrophilic -N=C=S functional group. They are stored in plants as precursor molecules, glucosinolates, which are processed by the tyrosinase enzyme upon plant tissue damage to release ITCs, along with other products. Isolated from broccoli, sulforaphane is by far the most studied antioxidant ITC, acting primarily through the induction of a transcription factor, the nuclear factor erythroid 2-related factor 2 (Nrf2), which upregulates downstream antioxidant genes/proteins. Paradoxically, sulforaphane, as a pro-oxidant compound, can also increase the levels of reactive oxygen species, a mechanism which is attributed to its anticancer effect. Beyond highlighting the common pro-oxidant and antioxidant effects of sulforaphane, the present paper was designed to assess the diverse anti-inflammatory mechanisms reported to date using a variety of in vitro and in vivo experimental models. Sulforaphane downregulates the expression of pro-inflammatory cytokines, chemokines, adhesion molecules, cycloxyhenase-2, and inducible nitric oxide synthase. The signalling pathways of nuclear factor κB, activator protein 1, sirtuins 1, silent information regulator sirtuin 1 and 3, and microRNAs are among those affected by sulforaphane. These anti-inflammatory actions are sometimes due to direct action via interaction with the sulfhydryl structural moiety of cysteine residues in enzymes/proteins. The following are among the topics discussed in this paper: paradoxical signalling pathways such as the immunosuppressant or immunostimulant mechanisms; crosstalk between the oxidative and inflammatory pathways; and effects dependent on health and disease states.
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Affiliation(s)
- Solomon Habtemariam
- Pharmacognosy Research & Herbal Analysis Services UK, University of Greenwich, Central Avenue, Chatham-Maritime, Kent ME4 4TB, UK
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Yu PR, Tseng CY, Hsu CC, Chen JH, Lin HH. In vitro and in vivo protective potential of quercetin-3-glucuronide against lipopolysaccharide-induced pulmonary injury through dual activation of nuclear factor-erythroid 2 related factor 2 and autophagy. Arch Toxicol 2024; 98:1415-1436. [PMID: 38436694 DOI: 10.1007/s00204-024-03691-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/23/2024] [Indexed: 03/05/2024]
Abstract
In vitro and in vivo models of lipopolysaccharide (LPS)-induced pulmonary injury, quercetin-3-glucuronide (Q3G) has been previously revealed the lung-protective potential via downregulation of inflammation, pyroptotic, and apoptotic cell death. However, the upstream signals mediating anti-pulmonary injury of Q3G have not yet been clarified. It has been reported that concerted dual activation of nuclear factor-erythroid 2 related factor 2 (Nrf2) and autophagy may prove to be a better treatment strategy in pulmonary injury. In this study, the effect of Q3G on antioxidant and autophagy were further investigated. Noncytotoxic doses of Q3G abolished the LPS-caused cell injury, and reactive oxygen species (ROS) generation with inductions in Nrf2-antioxidant signaling. Moreover, Q3G treatment repressed Nrf2 ubiquitination, and enhanced the association of Keap1 and p62 in the LPS-treated cells. Q3G also showed potential in inducing autophagy, as demonstrated by formation of acidic vesicular organelles (AVOs) and upregulation of autophagy factors. Next, the autolysosomes formation and cell survival were decreased by Q3G under pre-treatment with a lysosome inhibitor, chloroquine (CQ). Furthermore, mechanistic assays indicated that anti-pulmonary injury effects of Q3G might be mediated via Nrf2 signaling, as confirmed by the transfection of Nrf2 siRNA. Finally, Q3G significantly alleviated the development of pulmonary injury in vivo, which may result from inhibiting the LPS-induced lung dysfunction and edema. These findings emphasize a toxicological perspective, providing new insights into the mechanisms of Q3G's protective effects on LPS-induced pulmonary injury and highlighting its role in dual activating Nrf2 and autophagy pathways.
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Affiliation(s)
- Pei-Rong Yu
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Chiao-Yun Tseng
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Cheng-Chin Hsu
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
| | - Jing-Hsien Chen
- Department of Nutrition, Chung Shan Medical University, Taichung City, 40201, Taiwan
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan
| | - Hui-Hsuan Lin
- Clinical Laboratory, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan.
- Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, No. 110, Sec. 1, Jianguo N. Road, Taichung City, 40201, Taiwan.
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Zhang J, Liu J, Liu JW, Zhu QM, Zhang M, Zhang R, Ma XC, Lv X, Yu ZL, Sun CP. Targeting Keap1 with Inulae Herba activated the Nrf2 receptor to alleviate LPS-mediated acute lung injury. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117358. [PMID: 37890806 DOI: 10.1016/j.jep.2023.117358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/11/2023] [Accepted: 10/24/2023] [Indexed: 10/29/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Inulae Herba (IH) is known as Jinfeicao recorded in Chinese Pharmacopoeia with effects of lowering qi and eliminating phlegm, and used for the treatment of pulmonary diseases. However, its protective mechanism on pulmonary diseases, especially acute lung injury (ALI), is still undefined. AIM OF THE STUDY This study aimed to explore anti-inflammatory and anti-oxidation effects of IH and its underlying mechanism for treating ALI. MATERIALS AND METHODS We constructed a lipopolysaccharide (LPS)-ALI mouse model to reveal the therapeutical effect of IH. Western blot, real-time quantitative PCR, flow cytometry, small RNA interference, immunohistochemical staining, and the dual-luciferase experiment were performed to study the mechanism of IH for treating ALI. RESULTS IH attenuated LPS-mediated pathological changes (e.g. pneumonedema and pulmonary congestion) through inactivation of macrophages in an ALI mouse model. The result of flow cytometry demonstrated that IH regulated the homeostasis of M1 (CD80+CD206-) and M2 (CD80+CD206+) phenotype macrophages. Furthermore, IH suppressed mRNA expressions of M1 phenotype markers, such as iNOS and IL-6, whereas promoted mRNA expressions of M2 phenotype markers, such as ARG1 and RETNLA in LPS-mediated mice. Notably, IH targeted Keap1 to activate the Nrf2 receptor, exerting its anti-inflammatory and anti-oxidation effects proved by using immunohistochemical staining, dual-luciferase, and Keap1 knockdown technologies. CONCLUSION These findings suggested that targeting Keap1 with IH alleviated LPS-mediated ALI, and it could serve as a herbal agent for developing anti-ALI drugs.
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Affiliation(s)
- Juan Zhang
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China; School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518061, China
| | - Jing Liu
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Jing-Wen Liu
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Qi-Meng Zhu
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Min Zhang
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Rui Zhang
- School of Chinese Materia Medica, State Key Laboratory of Component-Based Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xiao-Chi Ma
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China.
| | - Xia Lv
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Zhen-Long Yu
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Cheng-Peng Sun
- Second Affiliated Hospital, Dalian Medical University, Dalian, 116044, China; College of Pharmacy, Dalian Medical University, Dalian, 116044, China; School of Chinese Materia Medica, State Key Laboratory of Component-Based Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Morton LC, Paton CD, Merry T, Braakhuis AJ. Effects of 7-day polyphenol powder supplementation on cycling performance and lung function in an ozone-polluted environment. Eur J Appl Physiol 2024; 124:343-352. [PMID: 37517068 PMCID: PMC10786979 DOI: 10.1007/s00421-023-05287-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/08/2023] [Indexed: 08/01/2023]
Abstract
PURPOSE Polluted environments can adversely affect lung function and exercise performance. Evidence suggests that some nutrient supplements may offset pollution's detrimental effects. This study examined the effect of polyphenol supplementation on lung function and exercise performance in an ozone-polluted environment. METHODS Ten male cyclists (mean ± SD: age, 43.8 ± 12.4 years; height, 177.8 ± 7.1 cm; weight, 76.03 ± 7.88 kg; VO2max 4.12 ± 0.72 L min-1) initially completed a baseline maximal incremental test and maximal effort 4 km time trial in ambient air. Thereafter cyclists completed two trials in an ozone-polluted environment (0.25 ppm) following seven days of supplementation with either polyphenol (PB) or placebo (PL). Experimental trials consisted of a three-stage submaximal test (50%, 60% and 70% incremental peak power) followed by a 4 km time trial. Lung function was measured pre- and post-exercise via spirometry and adverse respiratory symptoms with a Likert scale. RESULTS Ozone exposure significantly reduced (p < 0.05) lung function relative to ambient air. There were no significant differences (p > 0.05) in measured variables across the three submaximal intensities. There was a small (d = 0.31) non-significant difference (p = 0.09) in 4 km performance in PB (406.43 ± 50.29 s) vs. PL (426.20 ± 75.06 s). Oxygen consumption during the time trial was greater in PB (3.49 ± 0.71 L min-1) vs PL (3.32 ± 0.71 L min-1, p = 0.01, d = 0.24). Cough severity (SOC) was lower (p = 0.03) with PB relative to PL. CONCLUSION PB supplementation may provide small benefits to performance and reduce cough symptoms during high-intensity exercise in ozone-polluted environments.
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Affiliation(s)
- Lillian C Morton
- Department of Nutrition, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand.
| | - Carl D Paton
- School of Health and Sport Science, The Eastern Institute of Technology, Napier, New Zealand
| | - Troy Merry
- Department of Nutrition, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
| | - Andrea J Braakhuis
- Department of Nutrition, Faculty of Medical and Health Science, The University of Auckland, Auckland, New Zealand
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Liu J, Han X, Zhang T, Tian K, Li Z, Luo F. Reactive oxygen species (ROS) scavenging biomaterials for anti-inflammatory diseases: from mechanism to therapy. J Hematol Oncol 2023; 16:116. [PMID: 38037103 PMCID: PMC10687997 DOI: 10.1186/s13045-023-01512-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/17/2023] [Indexed: 12/02/2023] Open
Abstract
Inflammation is a fundamental defensive response to harmful stimuli, but the overactivation of inflammatory responses is associated with most human diseases. Reactive oxygen species (ROS) are a class of chemicals that are generated after the incomplete reduction of molecular oxygen. At moderate levels, ROS function as critical signaling molecules in the modulation of various physiological functions, including inflammatory responses. However, at excessive levels, ROS exert toxic effects and directly oxidize biological macromolecules, such as proteins, nucleic acids and lipids, further exacerbating the development of inflammatory responses and causing various inflammatory diseases. Therefore, designing and manufacturing biomaterials that scavenge ROS has emerged an important approach for restoring ROS homeostasis, limiting inflammatory responses and protecting the host against damage. This review systematically outlines the dynamic balance of ROS production and clearance under physiological conditions. We focus on the mechanisms by which ROS regulate cell signaling proteins and how these cell signaling proteins further affect inflammation. Furthermore, we discuss the use of potential and currently available-biomaterials that scavenge ROS, including agents that were engineered to reduce ROS levels by blocking ROS generation, directly chemically reacting with ROS, or catalytically accelerating ROS clearance, in the treatment of inflammatory diseases. Finally, we evaluate the challenges and prospects for the controlled production and material design of ROS scavenging biomaterials.
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Affiliation(s)
- Jiatong Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Xiaoyue Han
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Tingyue Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Keyue Tian
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Zhaoping Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Feng Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, 610041, China.
- Department of Prosthodontics, West China School of Stomatology, Sichuan University, No. 14, Section 3, Renmin Nanlu, Chengdu, 610041, China.
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10
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Dushianthan A, Bracegirdle L, Cusack R, Cumpstey AF, Postle AD, Grocott MPW. Alveolar Hyperoxia and Exacerbation of Lung Injury in Critically Ill SARS-CoV-2 Pneumonia. Med Sci (Basel) 2023; 11:70. [PMID: 37987325 PMCID: PMC10660857 DOI: 10.3390/medsci11040070] [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: 09/26/2023] [Revised: 10/17/2023] [Accepted: 10/30/2023] [Indexed: 11/22/2023] Open
Abstract
Acute hypoxic respiratory failure (AHRF) is a prominent feature of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) critical illness. The severity of gas exchange impairment correlates with worse prognosis, and AHRF requiring mechanical ventilation is associated with substantial mortality. Persistent impaired gas exchange leading to hypoxemia often warrants the prolonged administration of a high fraction of inspired oxygen (FiO2). In SARS-CoV-2 AHRF, systemic vasculopathy with lung microthrombosis and microangiopathy further exacerbates poor gas exchange due to alveolar inflammation and oedema. Capillary congestion with microthrombosis is a common autopsy finding in the lungs of patients who die with coronavirus disease 2019 (COVID-19)-associated acute respiratory distress syndrome. The need for a high FiO2 to normalise arterial hypoxemia and tissue hypoxia can result in alveolar hyperoxia. This in turn can lead to local alveolar oxidative stress with associated inflammation, alveolar epithelial cell apoptosis, surfactant dysfunction, pulmonary vascular abnormalities, resorption atelectasis, and impairment of innate immunity predisposing to secondary bacterial infections. While oxygen is a life-saving treatment, alveolar hyperoxia may exacerbate pre-existing lung injury. In this review, we provide a summary of oxygen toxicity mechanisms, evaluating the consequences of alveolar hyperoxia in COVID-19 and propose established and potential exploratory treatment pathways to minimise alveolar hyperoxia.
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Affiliation(s)
- Ahilanandan Dushianthan
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Luke Bracegirdle
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Rebecca Cusack
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Andrew F Cumpstey
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Anthony D Postle
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Michael P W Grocott
- NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
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11
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Gao S, Wang K, Xiong K, Xiao S, Wu C, Zhou M, Li L, Yuan G, Jiang L, Xiong Q, Yang L. Unraveling the Nrf2-ARE Signaling Pathway in the DF-1 Chicken Fibroblast Cell Line: Insights into T-2 Toxin-Induced Oxidative Stress Regulation. Toxins (Basel) 2023; 15:627. [PMID: 37999490 PMCID: PMC10674583 DOI: 10.3390/toxins15110627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/21/2023] [Accepted: 10/24/2023] [Indexed: 11/25/2023] Open
Abstract
The T-2 toxin (T2) poses a major threat to the health and productivity of animals. The present study aimed to investigate the regulatory mechanism of Nrf2 derived from broilers against T2-induced oxidative damage. DF-1 cells, including those with normal characteristics, as well as those overexpressing or with a knockout of specific components, were exposed to a 24 h treatment of 50 nM T2. The primary objective was to evaluate the indicators associated with oxidative stress and the expression of downstream antioxidant factors regulated by the Nrf2-ARE signaling pathway, at both the mRNA and protein levels. The findings of this study demonstrated a noteworthy relationship between the up-regulation of the Nrf2 protein and a considerable reduction in the oxidative stress levels within DF-1 cells (p < 0.05). Furthermore, this up-regulation was associated with a notable increase in the mRNA and protein levels of antioxidant factors downstream of the Nrf2-ARE signaling pathway (p < 0.05). Conversely, the down-regulation of the Nrf2 protein was linked to a marked elevation in oxidative stress levels in DF-1 cells (p < 0.05). Additionally, this down-regulation resulted in a significant decrease in both the mRNA and protein expression of antioxidant factors (p < 0.05). This experiment lays a theoretical foundation for investigating the detrimental impacts of T2 on broiler chickens. It also establishes a research framework for employing the Nrf2 protein in broiler chicken production and breeding. Moreover, it introduces novel insights for the prospective management of oxidative stress-related ailments in the livestock and poultry industry.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Lingchen Yang
- College of Veterinary Medicine, Hunan Agricultural University, No. 1 Nongda Road, Furong District, Changsha 410128, China; (S.G.); (K.W.); (K.X.); (S.X.); (C.W.); (M.Z.); (L.L.); (G.Y.); (L.J.); (Q.X.)
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12
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Hassanein EHM, Kamel EO, Gad-Elrab WM, Ahmed MA, Mohammedsaleh ZM, Ali FEM. Lansoprazole attenuates cyclophosphamide-induced cardiopulmonary injury by modulating redox-sensitive pathways and inflammation. Mol Cell Biochem 2023; 478:2319-2335. [PMID: 36717473 PMCID: PMC10520119 DOI: 10.1007/s11010-023-04662-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 01/09/2023] [Indexed: 02/01/2023]
Abstract
Cyclophosphamide (CPA) is a classical chemotherapeutic drug widely used as an anticancer and immunosuppressive agent. However, it is frequently associated with significant toxicities to the normal cells of different organs, including the lung and heart. Lansoprazole (LPZ), a proton pump inhibitor (PPI), possesses antioxidant and anti-inflammatory properties. The current study investigated how LPZ protects against CPA-induced cardiac and pulmonary damage, focusing on PPARγ, Nrf2, HO-1, cytoglobin, PI3K/AKT, and NF-κB signaling. Animals were randomly assigned into four groups: normal control group (received vehicle), LPZ only group (Rats received LPZ at a dose of 50 mg/kg/day P.O. for 10 days), CPA group (CPA was administered (200 mg/kg) as a single i.p. injection on the 7th day), and cotreatment group (LPZ plus CPA). Histopathological and biochemical analyses were conducted. Our results revealed that LPZ treatment revoked CPA-induced heart and lung histopathological alterations. Also, LPZ potently mitigated CPA-induced cardiac and pulmonary oxidative stress through the activation of PPARγ, Nrf2/HO-1, cytoglobin, and PI3K/AKT signaling pathways. Also, LPZ effectively suppressed inflammatory response as evidenced by down-regulating the inflammatory strategic controller NF-κB, MPO, and pro-inflammatory cytokines. The present findings could provide a mechanistic basis for understanding LPZ's role in CPA-induced cardiopulmonary injury through the alleviation of oxidative stress and inflammatory burden.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt
| | - Esam O Kamel
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Wail M Gad-Elrab
- Department of Human Anatomy & Embryology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Mohammed A Ahmed
- Pathology Department, Faculty of Medicine, Al-Azhar University, Assiut, Egypt
| | - Zuhair M Mohammedsaleh
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk, 71491, Kingdom of Saudi Arabia
| | - Fares E M Ali
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt.
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13
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Zeng J, Liao S, Liang Z, Li C, Luo Y, Wang K, Zhang D, Lan L, Hu S, Li W, Lin R, Jie Z, Hu Y, Dai S, Zhang Z. Schisandrin A regulates the Nrf2 signaling pathway and inhibits NLRP3 inflammasome activation to interfere with pyroptosis in a mouse model of COPD. Eur J Med Res 2023; 28:217. [PMID: 37400851 PMCID: PMC10316617 DOI: 10.1186/s40001-023-01190-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 06/23/2023] [Indexed: 07/05/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a serious chronic lung disease. Schisandrin A (SchA) is one of the most important active ingredients in Schisandra chinensis and has been used to treat various lung diseases in several countries. Here, we studied the pharmacological effect of SchA on airway inflammation induced by cigarette smoke (CS) and explored the therapeutic mechanism of SchA in COPD model mice. Our results showed that SchA treatment significantly improved the lung function of CS-induced COPD model mice and reduced the recruitment of leukocytes and hypersecretion of interleukin-6 (IL-6), interleukin-1β (IL-1β) and tumor necrosis factor α (TNF-α) in bronchoalveolar lavage fluid (BALF). H&E staining showed that SchA treatment could effectively reduce emphysema, immune cell infiltration and airway wall destruction. In addition, we found that SchA treatment can stimulate the expression of heme oxygenase-1 (HO-1) through the nuclear factor-erythroid 2-related factor (Nrf2) pathway, significantly reduce oxidative stress, increase catalase (CAT) and superoxide dismutase (SOD) levels, and suppress the level of malondialdehyde (MDA) in COPD model mice. Moreover, SchA treatment suppressed the generation of the NLRP3/ASC/Caspase1 inflammasome complex to inhibit the inflammatory response caused by IL-1β and IL-18 and pyroptosis caused by GSDMD. In conclusion, our study shows that SchA treatment can inhibit the production of ROS and the activation of the NLRP3 inflammasome by upregulating Nrf-2, thereby producing anti-inflammatory effects and reducing lung injury in COPD model mice. More importantly, SchA exhibited similar anti-inflammatory effects to dexamethasone in COPD model mice, and we did not observe substantial side effects of SchA treatment. The high safety of SchA makes it a potential candidate drug for the treatment of COPD.
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Affiliation(s)
- Jiamin Zeng
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Medical University, Guangzhou, China
| | - Sida Liao
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhu Liang
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Medical University, Guangzhou, China
| | - Caiping Li
- Guangzhou Medical University, Guangzhou, China
| | - Yuewen Luo
- Guangzhou Medical University, Guangzhou, China
| | - Kexin Wang
- Guangzhou Medical University, Guangzhou, China
| | - Dapeng Zhang
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lan Lan
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Suzhen Hu
- Huangdao District Chinese Medicine Hospital, Qingdao, China
| | - Wanyan Li
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ran Lin
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zichen Jie
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuanlong Hu
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Medical University, Guangzhou, China
| | - Shiting Dai
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Guangzhou Medical University, Guangzhou, China
| | - Zhimin Zhang
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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14
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Park SY, Gurung R, Hwang JH, Kang JH, Jung HJ, Zeb A, Hwang JI, Park SJ, Maeng HJ, Shin D, Oh SH. Development of KEAP1-targeting PROTAC and its antioxidant properties: In vitro and in vivo. Redox Biol 2023; 64:102783. [PMID: 37348157 DOI: 10.1016/j.redox.2023.102783] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/30/2023] [Accepted: 06/12/2023] [Indexed: 06/24/2023] Open
Abstract
Oxidative stress due to abnormal accumulation of reactive oxygen species (ROS) is an initiator of a large number of human diseases, and thus, the elimination and prevention of excessive ROS are important aspects of preventing the development of such diseases. Nuclear factor erythroid 2-related factor 2 (NRF2) is an essential transcription factor that defends against oxidative stress, and its function is negatively controlled by Kelch-like ECH-associated protein 1 (KEAP1). Therefore, activating NRF2 by inhibiting KEAP1 is viewed as a strategy for combating oxidative stress-related diseases. Here, we generated a cereblon (CRBN)-based proteolysis-targeting chimera (PROTAC), which we named SD2267, that induces the proteasomal degradation of KEAP1 and leads to NRF2 activation. As was intended, SD2267 bound to KEAP1, recruited CRBN, and induced the degradation of KEAP1. Furthermore, the KEAP1 degradation efficacy of SD2267 was diminished by MG132 (a proteasomal degradation inhibitor) but not by chloroquine (an autophagy inhibitor), which suggested that KEAP1 degradation by SD2267 was proteasomal degradation-dependent and autophagy-independent. Following KEAP1 degradation, SD2267 induced the nuclear translocation of NRF2, which led to the expression of NRF2 target genes and attenuated ROS accumulation induced by acetaminophen (APAP) in hepatocytes. Based on in vivo pharmacokinetic study, SD2267 was injected intraperitoneally at 1 or 3 mg/kg in APAP-induced liver injury mouse model. We observed that SD2267 degraded hepatic KEAP1 and attenuated APAP-induced liver damage. Summarizing, we described the synthesis of a KEAP1-targeting PROTAC (SD2267) and its efficacy and mode of action in vitro and in vivo. The results obtained suggest that SD2267 could be used to treat hepatic diseases related to oxidative stress.
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Affiliation(s)
- Se Yong Park
- College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Raju Gurung
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Jung Ho Hwang
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Ju-Hee Kang
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Hyun Jin Jung
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Alam Zeb
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Jong-Ik Hwang
- Graduate School of Medicine, Korea University, Seoul, Republic of Korea
| | - Sung Jean Park
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Han-Joo Maeng
- College of Pharmacy, Gachon University, Incheon, Republic of Korea
| | - Dongyun Shin
- College of Pharmacy, Gachon University, Incheon, Republic of Korea.
| | - Seung Hyun Oh
- College of Pharmacy, Gachon University, Incheon, Republic of Korea.
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15
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Ivanciuc T, Patrikeev I, Qu Y, Motamedi M, Jones-Hall Y, Casola A, Garofalo RP. Micro-CT Features of Lung Consolidation, Collagen Deposition and Inflammation in Experimental RSV Infection Are Aggravated in the Absence of Nrf2. Viruses 2023; 15:1191. [PMID: 37243277 PMCID: PMC10223011 DOI: 10.3390/v15051191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Severe respiratory syncytial virus (RSV) infections in early life have been linked to the development of chronic airway disease. RSV triggers the production of reactive oxygen species (ROS), which contributes to inflammation and enhanced clinical disease. NF-E2-related factor 2 (Nrf2) is an important redox-responsive protein that helps to protect cells and whole organisms from oxidative stress and injury. The role of Nrf2 in the context of viral-mediated chronic lung injury is not known. Herein, we show that RSV experimental infection of adult Nrf2-deficient BALB/c mice (Nrf2-/-; Nrf2 KO) is characterized by enhanced disease, increased inflammatory cell recruitment to the bronchoalveolar compartment and a more robust upregulation of innate and inflammatory genes and proteins, compared to wild-type Nrf2+/+ competent mice (WT). These events that occur at very early time points lead to increased peak RSV replication in Nrf2 KO compared to WT mice (day 5). To evaluate longitudinal changes in the lung architecture, mice were scanned weekly via high-resolution micro-computed tomography (micro-CT) imaging up to 28 days after initial viral inoculation. Based on micro-CT qualitative 2D imaging and quantitative reconstructed histogram-based analysis of lung volume and density, we found that RSV-infected Nrf2 KO mice developed significantly greater and prolonged fibrosis compared to WT mice. The results of this study underscore the critical role of Nrf2-mediated protection from oxidative injury, not only in the acute pathogenesis of RSV infection but also in the long-term consequences of chronic airway injury.
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Affiliation(s)
- Teodora Ivanciuc
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555, USA; (T.I.); (Y.Q.); (A.C.)
| | - Igor Patrikeev
- Department of Ophthalmology & Visual Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA; (I.P.); (M.M.)
| | - Yue Qu
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555, USA; (T.I.); (Y.Q.); (A.C.)
| | - Massoud Motamedi
- Department of Ophthalmology & Visual Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA; (I.P.); (M.M.)
- Biomedical Engineering Center, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Yava Jones-Hall
- Department of Veterinary Pathobiology, Texas A&M College of Veterinary Medicine and Biomedical Sciences, College Station, TX 77843, USA;
| | - Antonella Casola
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555, USA; (T.I.); (Y.Q.); (A.C.)
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Roberto P. Garofalo
- Department of Pediatrics, University of Texas Medical Branch, Galveston, TX 77555, USA; (T.I.); (Y.Q.); (A.C.)
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, TX 77555, USA
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16
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Xu J, Wang XL, Zeng HF, Han ZY. Methionine alleviates heat stress-induced ferroptosis in bovine mammary epithelial cells through the Nrf2 pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 256:114889. [PMID: 37079940 DOI: 10.1016/j.ecoenv.2023.114889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/24/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Heat stress (HS) triggers mammary gland degradation, accompanied by apoptosis and autophagy in bovine mammary epithelial cells, negatively affecting milk performance and mammary gland health. Ferroptosis is iron-mediated regulated cell death caused by over production of lipid peroxides, however, the relationship between ferroptosis and HS in bovine mammary epithelial cells has not been clarified. Methionine (Met) plays a notable role in alleviating HS affecting the mammary glands in dairy cows, but the underlying mechanisms require further exploration. Therefore, we evaluated the regulatory effect and mechanism of Met in alleviating HS-induced ferroptosis by using bovine mammary epithelial cell line (MAC-T) as an in vitro model. The results showed that Met improved cell vitality, restored mitochondrial function; reduced the content of various reactive oxygen species (ROS), especially hydrogen peroxide (H2O2) and superoxide anion (O2·-); had positive effects on antioxidant enzyme activity, namely glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD). More importantly, Met reduced labile iron protein (LIP) levels; increased iron storage and simultaneously decreased the levels of lipid reactive oxygen species (lipid ROS) and malondialdehyde (MDA), which all caused by HS in MAC-T. Mechanistically, Met increased the protein expression levels of glutathione peroxidase 4 (GPX4), solute carrier family 7, member 11 (SLC7A11) and ferritin heavy chain 1 (FTH1) by activating nuclear factor E2-related factor 2 (Nrf2) expression. Additionally, the protection effect of Met was cut off in MAC-T cells after interference with Nrf2, manifesting in decresing the protein expression levels of GPX4, SLC7A11 and FTH1,and increasing the levels of LIP and lipid ROS. Our findings indicate that Met eases HS-induced ferroptosis in MAC-T through the Nrf2 pathway, revealing that Met produces a marked effect on easing HS-induced bovine mammary gland injury in dairy cows.
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Affiliation(s)
- Jie Xu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xin-Ling Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Han-Fang Zeng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhao-Yu Han
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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17
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Wang J, Yan Y, Si H, Li J, Zhao Y, Gao T, Pi J, Zhang R, Chen R, Chen W, Zheng Y, Jiang M. The effect of real-ambient PM2.5 exposure on the lung and gut microbiomes and the regulation of Nrf2. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 254:114702. [PMID: 36950983 DOI: 10.1016/j.ecoenv.2023.114702] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/20/2023] [Accepted: 02/26/2023] [Indexed: 06/18/2023]
Abstract
The influence of air pollution on human health has sparked widespread concerns across the world. Previously, we found that exposure to ambient fine particulate matter (PM2.5) in our "real-ambient exposure" system can result in reduced lung function. However, the mechanism of organ-specific toxicity is still not fully elucidated. The balance of the microbiome contributes to maintaining lung and gut health, but the changes in the microbiome under PM2.5 exposure are not fully understood. Recently, crosstalk between nuclear factor E2-related factor 2 (Nrf2) and the microbiome was reported. However, it is unclear whether Nrf2 affects the lung and gut microbiomes under PM2.5 exposure. In this study, wild-type (WT) and Nrf2-/- (KO) mice were exposed to filtered air (FA) and real ambient PM2.5 (PM) in the " real-ambient exposure" system to examine changes in the lung and gut microbiomes. Here, our data suggested microbiome dysbiosis in lung and gut of KO mice under PM2.5 exposure, and Nrf2 ameliorated the microbiome disorder. Our study demonstrated the detrimental impacts of PM2.5 on the lung and gut microbiome by inhaled exposure to air pollution and supported the protective role of Nrf2 in maintaining microbiome homeostasis under PM2.5 exposure.
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Affiliation(s)
- Jianxin Wang
- School of Public Health, Qingdao University, Qingdao, China
| | - Yongwei Yan
- Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Yellow Sea fisheries research institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong, China
| | - Honglin Si
- School of Public Health, Qingdao University, Qingdao, China
| | - Jianyu Li
- School of Public Health, Qingdao University, Qingdao, China
| | - Yanjie Zhao
- School of Public Health, Qingdao University, Qingdao, China
| | - Tianlin Gao
- School of Public Health, Qingdao University, Qingdao, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Rui Chen
- School of Public Health, Capital Medical University, Beijing, China
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yaseen University, Guangzhou, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, China
| | - Menghui Jiang
- School of Public Health, Qingdao University, Qingdao, China.
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18
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Freeman AE, Willis KA, Qiao L, Abdelgawad AS, Halloran B, Rezonzew G, Nizami Z, Wenger N, Gaggar A, Ambalavanan N, Tipple TE, Lal CV. Microbial-induced Redox Imbalance in the Neonatal Lung Is Ameliorated by Live Biotherapeutics. Am J Respir Cell Mol Biol 2023; 68:267-278. [PMID: 36287630 PMCID: PMC9989473 DOI: 10.1165/rcmb.2021-0508oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 10/24/2022] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common lung disease of premature infants. Hyperoxia exposure and microbial dysbiosis are contributors to BPD development. However, the mechanisms linking pulmonary microbial dysbiosis to worsening lung injury are unknown. Nrf2 (nuclear factor erythroid 2-related factor 2) is a transcription factor that regulates oxidative stress responses and modulates hyperoxia-induced lung injury. We hypothesized that airway dysbiosis would attenuate Nrf2-dependent antioxidant function, resulting in a more severe phenotype of BPD. Here, we show that preterm infants with a Gammaproteobacteria-predominant dysbiosis have increased endotoxin in tracheal aspirates, and mice monocolonized with the representative Gammaproteobacteria Escherichia coli show increased tissue damage compared with germ-free (GF) control mice. Furthermore, we show Nrf2-deficient mice have worse lung structure and function after exposure to hyperoxia when the airway microbiome is augmented with E. coli. To confirm the disease-initiating potential of airway dysbiosis, we developed a novel humanized mouse model by colonizing GF mice with tracheal aspirates from human infants with or without severe BPD, producing gnotobiotic mice with BPD-associated and non-BPD-associated lung microbiomes. After hyperoxia exposure, BPD-associated mice demonstrated a more severe BPD phenotype and increased expression of Nrf2-regulated genes, compared with GF and non-BPD-associated mice. Furthermore, augmenting Nrf2-mediated antioxidant activity by supporting colonization with Lactobacillus species improved dysbiotic-augmented lung injury. Our results demonstrate that a lack of protective pulmonary microbiome signature attenuates an Nrf2-mediated antioxidant response, which is augmented by a respiratory probiotic blend. We anticipate antioxidant pathways will be major targets of future microbiome-based therapeutics for respiratory disease.
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Affiliation(s)
| | | | - Luhua Qiao
- Division of Neonatology, Department of Pediatrics
| | | | | | | | | | | | - Amit Gaggar
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama; and
| | | | - Trent E. Tipple
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, The University of Oklahoma Health Science Center, Oklahoma City, Oklahoma
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19
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Seim RF, Mac M, Sjeklocha LM, Kwiatkowski AJ, Keselowsky BG, Wallet SM, Cairns BA, Maile R. NUCLEAR FACTOR-ERYTHROID-2-RELATED FACTOR REGULATES SYSTEMIC AND PULMONARY BARRIER FUNCTION AND IMMUNE PROGRAMMING AFTER BURN AND INHALATION INJURY. Shock 2023; 59:300-310. [PMID: 36730842 PMCID: PMC9957943 DOI: 10.1097/shk.0000000000002022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
ABSTRACT Major burn injury is associated with systemic hyperinflammatory and oxidative stresses that encompass the wound, vascular, and pulmonary systems that contribute to complications and poor outcomes. These stresses are exacerbated if there is a combined burn and inhalation (B+I) injury, which leads to increases in morbidity and mortality. Nuclear factor-erythroid-2-related factor (NRF2) is a transcription factor that functions to maintain homeostasis during stress, in part by modulating inflammation and oxidative injury. We hypothesized that the NRF2-mediated homeostasis after burn alone and combined B-I injury is insufficient, but that pharmacological activation of the NRF2 pathway has the potential to reduce/reverse acute hyper inflammatory responses. We found that, after burn and B+I injury, Nrf2 -/- mice have higher mortality and exhibit greater pulmonary edema, vascular permeability, and exacerbated pulmonary and systemic proinflammatory responses compared with injured wild-type (WT) controls. Transcriptome analysis of lung tissue revealed specific Nrf2 -dependent dysregulated immune pathways after injury. In WT mice, we observed that B+I injury induces cytosolic, but not nuclear, accumulation of NRF2 protein in the lung microenvironment compared with sham-injured controls. Bardoxolone methyl (CDDO-Me)-containing microparticles (CDDO-MPs) were developed that allow for dilution in saline and stable release of CDDO-Me. When delivered intraperitoneally into mice 1 hour after B+I injury, CDDO-MPs significantly reduced mortality and cytokine dysfunction compared with untreated B-I animals. These data implicate the role of NRF2 regulation of pulmonary and systemic immune dysfunction after burn and B+I injury, and also a deficiency in controlling immune dysregulation. Selectively activating the NRF2 pathway may improve clinical outcomes in burn and B+I patients.
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Affiliation(s)
| | - Michelle Mac
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Lucas M Sjeklocha
- Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Alex J Kwiatkowski
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Ben G Keselowsky
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
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Zhang J, Zhang M, Zhang WH, Zhu QM, Ning J, Huo XK, Xiao HT, Sun CP. Total terpenoids of Inula japonica activated the Nrf2 receptor to alleviate the inflammation and oxidative stress in LPS-induced acute lung injury. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 107:154377. [PMID: 36116200 DOI: 10.1016/j.phymed.2022.154377] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/15/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Acute lung injury (ALI) is a life-threatening lung disease and characterized by pulmonary edema and atelectasis. Inula japonica Thunb. is a commonly used traditional Chinese medicine for the treatment of lung diseases. However, the potential effect and mechanism of total terpenoids of I. japonica (TTIJ) on ALI remain obscure. PURPOSE This study focused on the protective effect of TTIJ on lipopolysaccharide (LPS)-induced ALI in mice and its potential mechanism. STUDY DESIGN AND METHODS A mouse model of ALI was established by intratracheal instillation of LPS to investigate the protective effect of TTIJ. RNA-seq and bioinformatics were then performed to reveal the underlying mechanism. Finally, western blot and real-time qPCR were used to verify the effects of TTIJ on the inflammation and oxidative stress. RESULTS TTIJ notably attenuated LPS-induced histopathological changes of lung. The RNA-seq result suggested that the protective effect of TTIJ on LPS-induced ALI were associated with the Toll-like receptor 4 (TLR4) and nuclear factor-erythroid 2-related factor 2 (Nrf2) signaling pathways. Pretreatment with TTIJ significantly reduced the inflammation and oxidative stress via regulating levels of pro-inflammatory and anti-oxidative cytokines, such as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), superoxide dismutase (SOD), and glutathione (GSH), in LPS-induced ALI mice. TTIJ treatment could suppress the cyclooxygenase-2 (COX-2) expression level and the phosphorylation of p65, p38, ERK, and JNK through the inactivation of the MAPK/NF-κB signaling pathway in a TLR4-independent manner. Meanwhile, TTIJ treatment upregulated expression levels of proteins involved in the Nrf2 signaling pathway, such as heme oxygenase-1 (HO-1), NAD(P)H: quinoneoxidoreductase-1 (NQO-1), glutamate-cysteine ligase catalytic subunit (GCLC), and glutamate-cysteine ligase modifier subunit (GCLM), via activating the Nrf2 receptor, which was confirmed by the luciferase assay. CONCLUSION TTIJ could activate the Nrf2 receptor to alleviate the inflammatory response and oxidative stress in LPS-induced ALI mice, which suggested that TTIJ could serve as the potential agent in the treatment of ALI.
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Affiliation(s)
- Juan Zhang
- College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China; School of pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China; Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Min Zhang
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Wen-Hao Zhang
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Qi-Meng Zhu
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Jing Ning
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiao-Kui Huo
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China.
| | - Hai-Tao Xiao
- School of pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China.
| | - Cheng-Peng Sun
- Second Affiliated Hospital, College of Pharmacy, Dalian Medical University, Dalian, China.
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21
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Melatonin ameliorates bleomycin-induced pulmonary fibrosis via activating NRF2 and inhibiting galectin-3 expression. Acta Pharmacol Sin 2022; 44:1029-1037. [PMID: 36333557 PMCID: PMC9638373 DOI: 10.1038/s41401-022-01018-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/19/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
Abstract
Pulmonary fibrosis (PF) is a chronic interstitial lung disease with no effective therapies. Galectin-3 (Gal-3), a marker of oxidative stress, plays a key role in the pathogenesis of PF. Fibroblast-myofibroblast differentiation (FMD) is an important source of fibrotic cells in PF. Previous studies showed that melatonin (MT) exerted anti-fibrotic effect in many diseases including PF through its antioxidant activity. In the present study we investigated the relationships among Gal-3, NRF2, ROS in FMD and their regulation by MT. We established an in vitro model of FMD in TGF-β1-treated human fetal lung fibroblast1 (HFL1) cells and a PF mouse model via bleomycin (BLM) intratracheal instillation. We found that Gal-3 expression was significantly increased both in vitro and in vivo. Knockdown of Gal-3 in HFL1 cells markedly attenuated TGF-β1-induced FMD process and ROS accumulation. In TGF-β1-treated HFL1 cells, pretreatment with NRF2-specific inhibitor ML385 (5 μM) significantly increased the levels of Gal-3, α-SMA and ROS, suggesting that the expression of Gal-3 was regulated by NRF2. Treatment with NRF2-activator MT (250 μM) blocked α-SMA and ROS accumulation accompanied by reduced Gal-3 expression. In BLM-induced PF model, administration of MT (5 mg·kg−1·d−1, ip for 14 or 28 days) significantly attenuated the progression of lung fibrosis through up-regulating NRF2 and down-regulating Gal-3 expression in lung tissues. These results suggest that Gal-3 regulates TGF-β1-induced pro-fibrogenic responses and ROS production in FMD, and MT activates NRF2 to block FMD process by down-regulating Gal-3 expression. This study provides a useful clue for a clinical strategy to prevent PF. Graphic abstract of the mechanisms. MT attenuated BLM-induced PF via activating NRF2 and inhibiting Gal-3 expression. ![]()
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22
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Burtscher J, Mallet RT, Pialoux V, Millet GP, Burtscher M. Adaptive Responses to Hypoxia and/or Hyperoxia in Humans. Antioxid Redox Signal 2022; 37:887-912. [PMID: 35102747 DOI: 10.1089/ars.2021.0280] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Significance: Oxygen is indispensable for aerobic life, but its utilization exposes cells and tissues to oxidative stress; thus, tight regulation of cellular, tissue, and systemic oxygen concentrations is crucial. Here, we review the current understanding of how the human organism (mal-)adapts to low (hypoxia) and high (hyperoxia) oxygen levels and how these adaptations may be harnessed as therapeutic or performance enhancing strategies at the systemic level. Recent Advances: Hyperbaric oxygen therapy is already a cornerstone of modern medicine, and the application of mild hypoxia, that is, hypoxia conditioning (HC), to strengthen the resilience of organs or the whole body to severe hypoxic insults is an important preparation for high-altitude sojourns or to protect the cardiovascular system from hypoxic/ischemic damage. Many other applications of adaptations to hypo- and/or hyperoxia are only just emerging. HC-sometimes in combination with hyperoxic interventions-is gaining traction for the treatment of chronic diseases, including numerous neurological disorders, and for performance enhancement. Critical Issues: The dose- and intensity-dependent effects of varying oxygen concentrations render hypoxia- and/or hyperoxia-based interventions potentially highly beneficial, yet hazardous, although the risks versus benefits are as yet ill-defined. Future Directions: The field of low and high oxygen conditioning is expanding rapidly, and novel applications are increasingly recognized, for example, the modulation of aging processes, mood disorders, or metabolic diseases. To advance hypoxia/hyperoxia conditioning to clinical applications, more research on the effects of the intensity, duration, and frequency of altered oxygen concentrations, as well as on individual vulnerabilities to such interventions, is paramount. Antioxid. Redox Signal. 37, 887-912.
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Affiliation(s)
- Johannes Burtscher
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland.,Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - Robert T Mallet
- Department of Physiology and Anatomy, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Vincent Pialoux
- Inter-University Laboratory of Human Movement Biology EA7424, University Claude Bernard Lyon 1, University of Lyon, Lyon, France
| | - Grégoire P Millet
- Department of Biomedical Sciences, University of Lausanne, Lausanne, Switzerland.,Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - Martin Burtscher
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
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23
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Esworthy RS, Doroshow JH, Chu FF. The beginning of GPX2 and 30 years later. Free Radic Biol Med 2022; 188:419-433. [PMID: 35803440 PMCID: PMC9341242 DOI: 10.1016/j.freeradbiomed.2022.06.232] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/26/2022] [Accepted: 06/16/2022] [Indexed: 02/07/2023]
Abstract
We published the first paper to characterize GPX2 (aka GSHPx-GI) as a selenoenzyme with glutathione peroxidase activity in 1993. Among the four Se-GPX isozymes, GPX1-4, GPX1 and GPX2 are closely related in terms of structure, substrate specificities, and subcellular localization. What sets them apart are distinct patterns of gene regulation, tissue distribution and response to selenium. While we identified the digestive tract epithelium as the main site of GPX2 expression, later work has shown GPX2 is found more widely in epithelial tissues with concentration of expression in stem cell and proliferative compartments. GPX2 expression is regulated over a wide range of levels by many pathways, including NRF2, WNT, p53, RARE and this often results in attaching undue significance to GPX2 as GPX2 is only a part of a system of hydroperoxidase activities, including GPX1, peroxiredoxins and catalase. These other activities may play equal or greater roles, particularly in cell lines cultured without selenium supplementation and often with very low GPX2 levels. This could be assessed by examining levels of mRNA and protein among these various peroxidases at the outset of studies. As an example, it was found that GPX1 responds to the absence of GPX2 in mouse ileum and colon epithelium with higher expression. As such, both Gpx1 and Gpx2 had to be knocked out in mice to produce ileocolitis. However, we note that the actual role of GPX1 and GPX2 in relation to peroxiredoxin function is unclear. There may be an interdependence that requires only low amounts of GPX1 and/or GPX2 in a supporting role to maintain proper peroxiredoxin function. GPX2 levels may be prognostic for cancer progression in colon, breast, prostate and liver, however, there is no consistent trend for higher or lower levels to be favorable.
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Affiliation(s)
- R Steven Esworthy
- Department of Cancer Genetics & Epigenetics, Beckman Research Institute of City of Hope. Duarte, California, USA, 91010.
| | - James H Doroshow
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, NIH, Bethesda, MD, USA.
| | - Fong-Fong Chu
- Department of Cancer Genetics & Epigenetics, Beckman Research Institute of City of Hope. Duarte, California, USA, 91010.
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24
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Keskinidou C, Vassiliou AG, Dimopoulou I, Kotanidou A, Orfanos SE. Mechanistic Understanding of Lung Inflammation: Recent Advances and Emerging Techniques. J Inflamm Res 2022; 15:3501-3546. [PMID: 35734098 PMCID: PMC9207257 DOI: 10.2147/jir.s282695] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 05/04/2022] [Indexed: 12/12/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a life-threatening lung injury characterized by an acute inflammatory response in the lung parenchyma. Hence, it is considered as the most appropriate clinical syndrome to study pathogenic mechanisms of lung inflammation. ARDS is associated with increased morbidity and mortality in the intensive care unit (ICU), while no effective pharmacological treatment exists. It is very important therefore to fully characterize the underlying pathobiology and the related mechanisms, in order to develop novel therapeutic approaches. In vivo and in vitro models are important pre-clinical tools in biological and medical research in the mechanistic and pathological understanding of the majority of diseases. In this review, we will present data from selected experimental models of lung injury/acute lung inflammation, which have been based on clinical disorders that can lead to the development of ARDS and related inflammatory lung processes in humans, including ventilation-induced lung injury (VILI), sepsis, ischemia/reperfusion, smoke, acid aspiration, radiation, transfusion-related acute lung injury (TRALI), influenza, Streptococcus (S.) pneumoniae and coronaviruses infection. Data from the corresponding clinical conditions will also be presented. The mechanisms related to lung inflammation that will be covered are oxidative stress, neutrophil extracellular traps, mitogen-activated protein kinase (MAPK) pathways, surfactant, and water and ion channels. Finally, we will present a brief overview of emerging techniques in the field of omics research that have been applied to ARDS research, encompassing genomics, transcriptomics, proteomics, and metabolomics, which may recognize factors to help stratify ICU patients at risk, predict their prognosis, and possibly, serve as more specific therapeutic targets.
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Affiliation(s)
- Chrysi Keskinidou
- First Department of Critical Care Medicine and Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, "Evangelismos" Hospital, Athens, Greece
| | - Alice G Vassiliou
- First Department of Critical Care Medicine and Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, "Evangelismos" Hospital, Athens, Greece
| | - Ioanna Dimopoulou
- First Department of Critical Care Medicine and Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, "Evangelismos" Hospital, Athens, Greece
| | - Anastasia Kotanidou
- First Department of Critical Care Medicine and Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, "Evangelismos" Hospital, Athens, Greece
| | - Stylianos E Orfanos
- First Department of Critical Care Medicine and Pulmonary Services, School of Medicine, National and Kapodistrian University of Athens, "Evangelismos" Hospital, Athens, Greece
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25
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Xu Y, Li J, Lin Z, Liang W, Qin L, Ding J, Chen S, Zhou L. Isorhamnetin Alleviates Airway Inflammation by Regulating the Nrf2/Keap1 Pathway in a Mouse Model of COPD. Front Pharmacol 2022; 13:860362. [PMID: 35401244 PMCID: PMC8988040 DOI: 10.3389/fphar.2022.860362] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/07/2022] [Indexed: 12/20/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a severely disabling chronic lung disease characterized by persistent airway inflammation, which leads to limited expiratory airflow that deteriorates over time. Isorhamnetin (Iso) is one of the most important active components in the fruit of Hippophae rhamnoides L. and leaves of Ginkgo biloba L, which is widely used in many pulmonary disease studies because of its anti-inflammatory effects. Here, we investigated the pharmacological action of Iso in CS-induced airway inflammation and dissected the anti-inflammation mechanisms of Iso in COPD mice. A mouse model of COPD was established by exposure to cigarette smoke (CS) and intratracheal inhalation of lipopolysaccharide (LPS). Our results illustrated that Iso treatment significantly reduced leukocyte recruitment and excessive secretion of interleukin-6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and regulated upon activation, normal T-cell expressed and secreted (RANTES) in BALF of CS-induced COPD mice in a dose-dependent manner. This improved airway collagen deposition and emphysema, and further alleviated the decline in lung functions and systemic symptoms of hypoxia and weight loss. Additionally, Iso treatment obviously improves the T lymphocyte dysregualtion in peripheral blood of COPD mice. Mechanistically, Iso may degrade Keap1 through ubiquitination of p62, thereby activating the nuclear factor erythroid 2-related factor (Nrf2) pathway to increase the expression of protective factors, such as heme oxygenase-1 (HO-1), superoxide dismutase (SOD) 1, and SOD2, in lungs of CS-exposed mice, which plays an anti-inflammatory role in COPD. In conclusion, our study indicates that Iso significantly alleviates the inflammatory response in CS-induced COPD mice mainly by affecting the Nrf2/Keap1 pathway. More importantly, Iso exhibited anti-inflammatory effects comparable with Dex in COPD and we did not observe discernible side effects of Iso. The high safety profile of Iso may make it a potential drug candidate for COPD.
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Affiliation(s)
- Yifan Xu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Combination Chinese and Western Medicine, Guangzhou Medical University, Guangzhou, China
| | - Jing Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute of Combination Chinese and Western Medicine, Guangzhou Medical University, Guangzhou, China
| | - Zhiwei Lin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weiquan Liang
- Department of Respiratory Medicine, The Second People’s Hospital of Foshan, Foshan, China
| | - Lijie Qin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiabin Ding
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shuqi Chen
- Institute of Combination Chinese and Western Medicine, Guangzhou Medical University, Guangzhou, China
- Artemisinin Research Center, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Luqian Zhou
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- *Correspondence: Luqian Zhou,
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26
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Hybertson BM, Gao B, McCord JM. Effects of the Phytochemical Combination PB123 on Nrf2 Activation, Gene Expression, and the Cholesterol Pathway in HepG2 Cells. OBM INTEGRATIVE AND COMPLIMENTARY MEDICINE 2022; 7. [PMID: 35252766 PMCID: PMC8896855 DOI: 10.21926/obm.icm.2201002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
There has been a long history of human usage of the biologically-active phytochemicals in Salvia rosmarinus, Zingiber officinale, and Sophora japonica for health purposes, and we recently reported on a combination of those plant materials as the PB123 dietary supplement. In the present work we extended those studies to evaluate activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) transcription factor and differential gene expression in cultured HepG2 (hepatocellular carcinoma) cells treated with PB123. We determined transcriptome changes using mRNA-seq methods, and analyzed the affected pathways using Ingenuity Pathway Analysis and BioJupies, indicating that primary effects included increasing the Nrf2 pathway and decreasing the cholesterol biosynthesis pathway. Pretreatment of cultured HepG2 cells with PB123 upregulated Nrf2-dependent cytoprotective genes and increased cellular defenses against cumene hydroperoxide-induced oxidative stress. In contrast, pretreatment of cultured HepG2 cells with PB123 downregulated cholesterol biosynthesis genes and decreased cellular cholesterol levels. These findings support the possible beneficial effects of PB123 as a healthspan-promoting dietary supplement.
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Affiliation(s)
- Brooks M Hybertson
- Pathways Bioscience, Aurora, CO 80045, USA.,Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Bifeng Gao
- Pathways Bioscience, Aurora, CO 80045, USA.,Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joe M McCord
- Pathways Bioscience, Aurora, CO 80045, USA.,Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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27
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Wu XY, Wang T, Hu HX, Zhang K, Zhao Y, Zhao BB, Lou HX, Wang XN, Shen T. The alleviative effect of flavonol-type Nrf2 activator rhamnazin from Physalis alkekengi L. var. franchetii (Mast.) Makino on pulmonary disorders. Phytother Res 2022; 36:1692-1707. [PMID: 35129872 DOI: 10.1002/ptr.7403] [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: 03/20/2021] [Revised: 01/06/2022] [Accepted: 01/08/2022] [Indexed: 11/10/2022]
Abstract
Rhamnazin (RN) is a flavonol isolated from the calyxes and fruits of Physalis alkekengi L. var. franchetii (Mast.) Makino, which has been used for treating pulmonary diseases in traditional Chinese medicine. The nuclear factor erythroid 2-related factor 2 (Nrf2) is a therapeutic target for pulmonary diseases. In the present study, the underlying mechanism and pharmacological effect of RN against pulmonary disorders are investigated. Human lung epithelial Beas-2B cell and RAW 264.7 murine macrophage-based cell models, and a cigarette smoke (CS)-induced pulmonary impairment mice model are adopted for investigation in vitro and in vivo. RN is identified to be an Nrf2 activator, which promotes Nrf2 dissociation from Keap1 via reacting with the Cys151 cysteine residue of Keap1, and suppresses Nrf2 ubiquitination. In addition, RN is able to attenuate toxicant-stimulated oxidative stress and inflammatory response in vitro. Importantly, RN significantly relieves CS-induced oxidative insult and inflammation, and RN-induced inhibition of inflammation is related to inhibition of nuclear transcription factor-κB (NF-κB) and induction of cell autophagy. In conclusion, our data indicate that RN is an activator of the Nrf2 pathway and evidently alleviates pulmonary disorders via restricting NF-κB activation and promoting autophagy. RN is a promising candidate for the therapy of pulmonary disorders.
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Affiliation(s)
- Xue-Yi Wu
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Tian Wang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Hui-Xin Hu
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Kan Zhang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Yu Zhao
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Bao-Bing Zhao
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Hong-Xiang Lou
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Xiao-Ning Wang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
| | - Tao Shen
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan, People's Republic of China
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28
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Xu LT, Wang T, Fang KL, Zhao Y, Wang XN, Ren DM, Shen T. The ethanol extract of flower buds of Tussilago farfara L. attenuates cigarette smoke-induced lung inflammation through regulating NLRP3 inflammasome, Nrf2, and NF-κB. JOURNAL OF ETHNOPHARMACOLOGY 2022; 283:114694. [PMID: 34601084 DOI: 10.1016/j.jep.2021.114694] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 09/13/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The flower buds of Tussilago farfara L. (Abbreviated as FTF) were widely used in traditional Chinese medicine (TCM) to treat respiratory diseases, including asthma, dry throat, great thirst, turbid saliva, stinky pus, and coughs caused by various causes. AIM OF STUDY The aim of study is to explore the efficiency of FTF in vitro and in vivo for the treatment of lung inflammation, and to illustrate the possible mechanisms of FTF in treating inflammation-related respiratory diseases targeting NOD-like receptor 3 (NLRP3) inflammasome, nuclear factor erythroid 2-related factor 2 (Nrf2), and nuclear transcription factor-κB (NF-κB). METHODS Lung inflammation model in vivo was induced by exposure of mice to cigarette smoke (CS) for two weeks. The levels of superoxide dismutase (SOD), malondialdehyde (MDA), inflammatory factors, and histology in lung tissues were investigated in presence or absence of ethanol extract of the flower buds of T. farfara L. (FTF-EtOH). In the cell-based models, nitric oxide (NO) assay, flow cytometry assay, enzyme-linked immunosorbent assay (Elisa), and glutathione (GSH) assay were used to explore the anti-inflammatory and anti-oxidant effects of FTF-EtOH. Possible anti-inflammatory mechanisms of FTF targeting NLRP3 inflammasome, Nrf2, and NF-κB have been determined using western blot, quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR), immunofluorescence assay, nuclear and cytoplasmic extraction, and ubiqutination assay. RESULTS FTF-EtOH suppressed CS-induced overproduction of inflammatory factors [e.g., tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β)], and upregulation of the content of intracellular MDA in the lung homogenate of mice. In cell-based models, FTF-EtOH reduced the lipopolysaccharide (LPS)-induced overproduction of inflammatory factors, and attenuated the CS extract-induced overgeneration of reactive oxygen species (ROS). Furthermore, FTF-EtOH up-regulated Nrf2 and its downstream genes through enhancing the stability of Nrf2 protein, and inhibited the activation of NF-κB and NLRP3 inflammasome, which have been confirmed by detecting the protein levels in the mouse model. CONCLUSIONS FTF-EtOH effectively attenuated lung inflammation in vitro and in vivo. The protection of FTF-EtOH against inflammation was produced by activation of Nrf2 and inhibitions of NF-κB and NLRP3 inflammasome. These datas definitely support the ethnopharmacological use of FTF as an anti-inflammatory drug for treating respiratory diseases in TCM.
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Affiliation(s)
- Lin-Tao Xu
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Tian Wang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Kai-Li Fang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Yu Zhao
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Xiao-Ning Wang
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China
| | - Dong-Mei Ren
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China.
| | - Tao Shen
- Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, People's Republic of China.
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29
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Liu Y, Xue N, Zhang B, Lv H, Li S. Role of Thioredoxin-1 and its inducers in human health and diseases. Eur J Pharmacol 2022; 919:174756. [PMID: 35032486 DOI: 10.1016/j.ejphar.2022.174756] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/08/2021] [Accepted: 01/06/2022] [Indexed: 12/27/2022]
Abstract
Thioredoxin-1 (Trx-1) is a small redox-active protein normally found in mammalian cells that responds to the changing redox environment by contributing electrons or regulating related proteins. There is growing evidence that Trx-1 has multiple functions, including cytoprotective, anti-apoptotic, antioxidant and anti-inflammatory effects. To date, researchers have found that Trx-1 deficiency leads to severe damage in various disease models, such as atherosclerosis, cerebral ischemia, diabetes and tumors. Conversely, activation of Trx-1 has a protective effect against these diseases. Accordingly, a variety of Trx-1 inducers have been widely used in the clinic with significant therapeutic value. In this paper, we summarize the pathogenesis of Trx-1 involvement in the above-mentioned diseases and describe the protective effects of Trx-1 inducers on them.
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Affiliation(s)
- Yuanyuan Liu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China
| | - Nianyu Xue
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China
| | - Boxi Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China
| | - Hongming Lv
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China.
| | - Shize Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang Bayi, China.
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30
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Cardamonin attenuates phorbol 12-myristate 13-acetate-induced pulmonary inflammation in alveolar macrophages. Food Chem Toxicol 2021; 159:112761. [PMID: 34890758 DOI: 10.1016/j.fct.2021.112761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 01/24/2023]
Abstract
Pulmonary inflammation involves complex immune responses in which alveolar macrophages release pro-inflammatory proteins and cytokines. Cardamonin is a spice component that exerts anti-inflammatory and anti-oxidative properties against pulmonary inflammation. Herein, the aim of this research is to investigate the effects of cardamonin on pulmonary inflammation and its mechanism. Pulmonary inflammation in mice was induced by intratracheal administration of PMA. PMA-stimulated acute fibrosis, pulmonary edema, and inflammatory responses were ameliorated by oral administration of cardamonin in vivo. In MH-S alveolar macrophages, PMA-induced pro-inflammatory responses, including iNOS, COX-2, MMP-9 and cytokines expressions were reduced by cardamonin. The anti-oxidative Nrf2/HO-1 axis was also provoked by cardamonin in MH-S alveolar macrophages. In addition, MMP-9 expression induced by PMA is also decreased by the down-stream metabolites of HO-1, indicating that HO-1 expression partially contributes to the anti-inflammatory effect exerted by cardamonin. In this study, cardamonin demonstrates anti-inflammatory and anti-oxidative effects on PMA-induced pulmonary inflammation and activating Nrf2/HO-1 axis in alveolar macrophages. Cardamonin also ameliorates pulmonary inflammation, rapid fibrosis in vivo, suggesting powerful health benefits.
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Norton D, Bonnette WG, Callahan JF, Carr MG, Griffiths-Jones CM, Heightman TD, Kerns JK, Nie H, Rich SJ, Richardson C, Rumsey W, Sanchez Y, Verdonk ML, Willems HMG, Wixted WE, Wolfe L, Woolford AJA, Wu Z, Davies TG. Fragment-Guided Discovery of Pyrazole Carboxylic Acid Inhibitors of the Kelch-like ECH-Associated Protein 1: Nuclear Factor Erythroid 2 Related Factor 2 (KEAP1:NRF2) Protein-Protein Interaction. J Med Chem 2021; 64:15949-15972. [PMID: 34705450 DOI: 10.1021/acs.jmedchem.1c01351] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The NRF2-mediated cytoprotective response is central to cellular homoeostasis, and there is increasing interest in developing small-molecule activators of this pathway as therapeutics for diseases involving chronic oxidative stress. The protein KEAP1, which regulates NRF2, is a key point for pharmacological intervention, and we recently described the use of fragment-based drug discovery to develop a tool compound that directly disrupts the protein-protein interaction between NRF2 and KEAP1. We now present the identification of a second, chemically distinct series of KEAP1 inhibitors, which provided an alternative chemotype for lead optimization. Pharmacophoric information from our original fragment screen was used to identify new hit matter through database searching and to evolve this into a new lead with high target affinity and cell-based activity. We highlight how knowledge obtained from fragment-based approaches can be used to focus additional screening campaigns in order to de-risk projects through the rapid identification of novel chemical series.
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Affiliation(s)
- David Norton
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
| | - William G Bonnette
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - James F Callahan
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Maria G Carr
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
| | | | - Tom D Heightman
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
| | - Jeffrey K Kerns
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Hong Nie
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Sharna J Rich
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
| | | | - William Rumsey
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Yolanda Sanchez
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Marcel L Verdonk
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
| | | | - William E Wixted
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Lawrence Wolfe
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | | | - Zining Wu
- GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426-0989, United States
| | - Thomas G Davies
- Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge CB4 0QA, U.K
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32
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Juarez Facio AT, Yon J, Corbière C, Rogez-Florent T, Castilla C, Lavanant H, Mignot M, Devouge-Boyer C, Logie C, Chevalier L, Vaugeois JM, Monteil C. Toxicological impact of organic ultrafine particles (UFPs) in human bronchial epithelial BEAS-2B cells at air-liquid interface. Toxicol In Vitro 2021; 78:105258. [PMID: 34653646 DOI: 10.1016/j.tiv.2021.105258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/30/2021] [Accepted: 10/09/2021] [Indexed: 12/26/2022]
Abstract
Air pollution has significant health effects worldwide, and airborne particles play a significant role in these effects. Ultrafine particles (UFPs) have an aerodynamic diameter of 0.1 μm or less, can penetrate deep into the respiratory tree, and are more toxic due to their large specific surface area, which should adsorb organic compounds. The aim of this study is to show the toxicological effects of UFPs with high organic content at low dose on BEAS-2B cells through at air-liquid interface (ALI) exposure using a Vitrocell® technology and a miniCAST (Combustion Aerosol Standard) generator. In conjunction with this approach, chemical analysis of particles and gas phase was performed to evaluate the presence of polycyclic aromatic hydrocarbons (PAHs). Chemical analyses confirmed the presence of PAHs in UFPs. With this experimental setup, exposure of the BEAS-2B cells induced neither cytotoxicity nor mitochondrial dysfunction. However, an increase of oxidative stress was observed, as assessed through Nrf2, NQO1, HO-1, CuZnSOD, MnSOD, and Catalase gene expression, together with significant induction of genes related to xenobiotic metabolism CYP1A1 and CYP1B1. Negative regulation of inflammatory genes expression (IL-6 and IL-8) was present three hours after the exposition to the UFPs. Taken together, this experimental approach, using repeatable conditions, should help to clarify the mechanisms by which organic UFPs induce toxicological effects.
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Affiliation(s)
| | - J Yon
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, CORIA, 76000 Rouen, France
| | - C Corbière
- Normandie Univ, UNIROUEN, UNICAEN ABTE, 76000 Rouen, France
| | | | - C Castilla
- Normandie Univ, INSA Rouen, UMR 6014 CNRS, COBRA, 76801, Saint Etienne Du Rouvray, France
| | - H Lavanant
- Normandie Univ, INSA Rouen, UMR 6014 CNRS, COBRA, 76801, Saint Etienne Du Rouvray, France
| | - M Mignot
- Normandie Univ, INSA Rouen, UMR 6014 CNRS, COBRA, 76801, Saint Etienne Du Rouvray, France
| | - C Devouge-Boyer
- Normandie Univ, INSA Rouen, UMR 6014 CNRS, COBRA, 76801, Saint Etienne Du Rouvray, France
| | - C Logie
- Normandie Univ, UNIROUEN, UNICAEN ABTE, 76000 Rouen, France
| | - L Chevalier
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, GPM-UMR6634, 76000 Rouen, France
| | - J-M Vaugeois
- Normandie Univ, UNIROUEN, UNICAEN ABTE, 76000 Rouen, France
| | - C Monteil
- Normandie Univ, UNIROUEN, UNICAEN ABTE, 76000 Rouen, France.
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33
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Taniguchi A, Tsuge M, Miyahara N, Tsukahara H. Reactive Oxygen Species and Antioxidative Defense in Chronic Obstructive Pulmonary Disease. Antioxidants (Basel) 2021; 10:antiox10101537. [PMID: 34679673 PMCID: PMC8533053 DOI: 10.3390/antiox10101537] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 02/06/2023] Open
Abstract
The respiratory system is continuously exposed to endogenous and exogenous oxidants. Chronic obstructive pulmonary disease (COPD) is characterized by chronic inflammation of the airways, leading to the destruction of lung parenchyma (emphysema) and declining pulmonary function. It is increasingly obvious that reactive oxygen species (ROS) and reactive nitrogen species (RNS) contribute to the progression and amplification of the inflammatory responses related to this disease. First, we described the association between cigarette smoking, the most representative exogenous oxidant, and COPD and then presented the multiple pathophysiological aspects of ROS and antioxidative defense systems in the development and progression of COPD. Second, the relationship between nitric oxide system (endothelial) dysfunction and oxidative stress has been discussed. Third, we have provided data on the use of these biomarkers in the pathogenetic mechanisms involved in COPD and its progression and presented an overview of oxidative stress biomarkers having clinical applications in respiratory medicine, including those in exhaled breath, as per recent observations. Finally, we explained the findings of recent clinical and experimental studies evaluating the efficacy of antioxidative interventions for COPD. Future breakthroughs in antioxidative therapy may provide a promising therapeutic strategy for the prevention and treatment of COPD.
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Affiliation(s)
- Akihiko Taniguchi
- Department of Hematology, Oncology, Allergy and Respiratory Medicine, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Mitsuru Tsuge
- Department of Pediatrics, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Nobuaki Miyahara
- Department of Medical Technology, Okayama University Academic Field of Health Sciences, Okayama 700-8558, Japan;
| | - Hirokazu Tsukahara
- Department of Pediatrics, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan;
- Correspondence:
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34
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Liu H, Zhu S, Han W, Cai Y, Liu C. DMEP induces mitochondrial damage regulated by inhibiting Nrf2 and SIRT1/PGC-1α signaling pathways in HepG2 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 221:112449. [PMID: 34214916 DOI: 10.1016/j.ecoenv.2021.112449] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/09/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Dimethoxyethyl phthalate (DMEP) is an environmental endocrine disruptor. However, research into the underlying mechanisms of DMEP mitochondrial toxicity is still in its infancy. We therefore expect to understand whether DMEP induced mitochondrial damage in HepG2 cells and the associated signaling pathways. DMEP (0.125, 0.25, 0.5, 1 and 2 mM) exposure for 48 h induced a notable increment in reactive oxygen species (ROS), malondialdehyde (MDA), alanine aminotransferase (ALT), aspartate transaminase (AST) and 8-hydroxydeoxyguanosine (8-OHdG) in hepG2 cells, resulting in cellular oxidative stress. Low doses of DMEP upregulated nuclear factor E2-related factor 2 (Nrf2) and downstream protein haeme oxygenase-1 (HO-1) levels and high doses down-regulated their levels. Nrf2 levels increased after ROS scavenging by N-acetyl-L-cysteine (NAC), which indicated that the Nrf2 pathway may be affected by oxidative stress. We also found that DMEP decreased ATP content, mitochondrial copy number (mtDNA), translocase of the outer membrane subunit 20 (TOM20) expression, mitochondria-encoded genes CO1, CO2, CO3, ATP6, ATP8 expression, inhibited mitochondrial biogenesis pathway, down-regulated sirtuin 1(SIRT1), PPAR gamma co-activator 1 alpha (PGC-1α), Nuclear respiratory factor 1(Nrf1), Mitochondrial transcription factor A (TFAM) content and activated PINK1/Parkin autophagy pathway. DMEP also activated the mitochondrial apoptotic pathway, causing cytochrome c cytoplasmic translocation and caspase 3 cleavage. What's more, DMEP activated the Nuclear factor-κB (NF-κB) pathway and levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) were significantly upregulated, causing an inflammatory response. In summary, DMEP can cause inflammatory response and oxidative stress in HepG2 cells, inhibited the Nrf2 pathway and mitochondrial biogenesis, and induced autophagy and apoptosis. And oxidative stress at least partially affected the Nrf2 pathway and mitochondrial biogenesis SIRT1/PGC-1α pathway.
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Affiliation(s)
- Huan Liu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, China.
| | - Siyu Zhu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, China.
| | - Wenna Han
- College of Food Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, China.
| | - Yueqi Cai
- College of Food Science, South China Agricultural University, Guangzhou 510642, China.
| | - Chunhong Liu
- College of Food Science, South China Agricultural University, Guangzhou 510642, China; Guangdong Provincial Key Laboratory of Food Quality and Safety, Guangzhou 510642, China.
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35
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Effects of Phthalate Esters (PAEs) on Cell Viability and Nrf2 of HepG2 and 3D-QSAR Studies. TOXICS 2021; 9:toxics9060134. [PMID: 34198862 PMCID: PMC8228614 DOI: 10.3390/toxics9060134] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/31/2021] [Accepted: 06/03/2021] [Indexed: 12/30/2022]
Abstract
Phthalate esters (PAEs) are a widespread environmental pollutant, and their ecological and environmental health risks have gradually attracted attention. To reveal the toxicity characteristics of these compounds, ten PAEs were selected as research objects to establish a cell model. CCK-8 was used to determine cell viability, Western blots were used to determine the content of Nrf2 in HepG2, and the LD50 collected for the 13 PAEs administered to rats. On this basis, 3D-QSAR models of IC50, LD50 and Nrf2 were established. The experimental results showed that as the time of PAEs exposure increased (24, 48 and 72 h), cell viability gradually decreased. The test concentration (62.5 /125/250 μM) of PAEs exposed for 48 h could significantly increase the content of Nrf2, and the 1000 μM PAEs could inhibit the content of Nrf2. The model is relatively stable and predicts well that the introduction of large and hydrophobic groups may significantly affect the toxic effects of PAEs on cells. The present study provided a potential tool for predicting the LD50 and Nrf2 of new PAEs, and provide a reference for the design of new less toxic PAEs in the future.
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36
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Narayanan S, Elesela S, Rasky AJ, Morris SH, Kumar S, Lombard D, Lukacs NW. ER stress protein PERK promotes inappropriate innate immune responses and pathogenesis during RSV infection. J Leukoc Biol 2021; 111:379-389. [PMID: 33866604 DOI: 10.1002/jlb.3a0520-322rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The activation of dendritic cells (DC) during respiratory viral infections is central to directing the immune response and the pathologic outcome. In these studies, the effect of RSV infection on development of ER stress responses and the impact on innate immunity was examined. The upregulation of ER stress was closely associated with the PERK pathway through the upregulation of CHOP in RSV infected DC. The inhibition of PERK corresponded with decreased EIF2a phosphorylation but had no significant effect on Nrf2 in DC, two primary pathways regulated by PERK. Subsequent studies identified that by blocking PERK activity in infected DC an altered ER stress response and innate cytokine profile was observed with the upregulation of IFNβ and IL-12, coincident to the down regulation of IL-1β. When mitochondria respiration was assessed in PERK deficient DC there were increased dysfunctional mitochondria after RSV infection that resulted in reduced oxygen consumption rates (OCR) and ATP production indicating altered cellular metabolism. Use of a CD11c targeted genetic deleted murine model, RSV infection was characterized by reduced inflammation and diminished mucus staining as well as reduced mucus-associated gene gob5 expression. The assessment of the cytokine responses showed decreased IL-13 and IL-17 along with diminished IL-1β in the lungs of PERK deficient infected mice. When PERK-deficient animals were assessed in parallel for lung leukocyte numbers, animals displayed significantly reduced myeloid and activated CD4 and CD8 T cell numbers. Thus, the PERK activation pathway may provide a rational target for altering the severe outcome of an RSV infection through modifying immune responses.
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Affiliation(s)
- Samanthi Narayanan
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Srikanth Elesela
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Andrew J Rasky
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Susan H Morris
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Surinder Kumar
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - David Lombard
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Nicholas W Lukacs
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA.,Mary H. Weiser Food Allergy Center, University of Michigan, Ann Arbor, Michigan, USA
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37
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Tacu I, Kokalari I, Abollino O, Albrecht C, Malandrino M, Ferretti AM, Schins RPF, Fenoglio I. Mechanistic Insights into the Role of Iron, Copper, and Carbonaceous Component on the Oxidative Potential of Ultrafine Particulate Matter. Chem Res Toxicol 2021; 34:767-779. [PMID: 33651939 PMCID: PMC8034814 DOI: 10.1021/acs.chemrestox.0c00399] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Transition
metals play a key role in the pathogenic potential of
urban particulate matter (PM). However, air quality regulations include
exposure limits only for metals having a known toxic potential like
Pb, As, Cd, and Ni, neglecting other transition metals like Fe and
Cu. Fe and Cu are mainly found in the water-soluble fraction of PM.
However, a fraction of the ions may persist strongly bound to the
particles, thus potentially acting as surface reactive sites. The
contribution of surface ions to the oxidative potential (OP) of PM
is likely different from that of free ions since the redox activity
of metals is modulated by their local chemical environment. The aim
of this study was to investigate how Fe and Cu bound to carbonaceous
particles affect the OP and associated toxicity of PM toward epithelial
cells and macrophages. Carbonaceous nanoparticles (CNPs) having well-defined
size were loaded with controlled amounts of Cu and Fe. The effect
of Cu and Fe on the OP of CNPs was evaluated by electronic paramagnetic
resonance (EPR) spectroscopy associated with the spin-trapping technique
and correlated with the ability to induce cytotoxicity (LDH, WST-1),
oxidative stress (Nrf2 translocation), and DNA damage (comet assay)
on lung macrophages (NR8383) and/or epithelial cells (RLE-6TN). The
release of pro-inflammatory cytokines (TNF-α, MCP-1, and CXCL2)
by macrophages and epithelial cells was also investigated. The results
indicate a major contribution of surface Cu to the surface reactivity
of CNPs, while Fe has a minor role. At the same time, Cu increases
the cytotoxicity of CNPs and their ability to induce oxidative stress
and DNA damage. In contrast, surface Fe increases the release of pro-inflammatory
cytokines by macrophages. Overall, these results confirm the role
of Cu and Fe in PM toxicity and suggest that the total metals content
in PM might be a better indicator of pathogenicity than water-soluble
metals.
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Affiliation(s)
- Ion Tacu
- Department of Chemistry, University of Torino, Torino 10125, Italy.,IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf 40225, Germany
| | - Ida Kokalari
- Department of Chemistry, University of Torino, Torino 10125, Italy
| | - Ornella Abollino
- Department of Drug Science and Technology, University of Torino, Torino 10125, Italy
| | - Catrin Albrecht
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf 40225, Germany
| | - Mery Malandrino
- Department of Chemistry, University of Torino, Torino 10125, Italy
| | - Anna Maria Ferretti
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" SCITEC CNR, Via Fantoli 16/15, Milan 20138, Italy
| | - Roel P F Schins
- IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf 40225, Germany
| | - Ivana Fenoglio
- Department of Chemistry, University of Torino, Torino 10125, Italy
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38
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Enweasor C, Flayer CH, Haczku A. Ozone-Induced Oxidative Stress, Neutrophilic Airway Inflammation, and Glucocorticoid Resistance in Asthma. Front Immunol 2021; 12:631092. [PMID: 33717165 PMCID: PMC7952990 DOI: 10.3389/fimmu.2021.631092] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
Despite recent advances in using biologicals that target Th2 pathways, glucocorticoids form the mainstay of asthma treatment. Asthma morbidity and mortality remain high due to the wide variability of treatment responsiveness and complex clinical phenotypes driven by distinct underlying mechanisms. Emerging evidence suggests that inhalation of the toxic air pollutant, ozone, worsens asthma by impairing glucocorticoid responsiveness. This review discusses the role of oxidative stress in glucocorticoid resistance in asthma. The underlying mechanisms point to a central role of oxidative stress pathways. The primary data source for this review consisted of peer-reviewed publications on the impact of ozone on airway inflammation and glucocorticoid responsiveness indexed in PubMed. Our main search strategy focused on cross-referencing "asthma and glucocorticoid resistance" against "ozone, oxidative stress, alarmins, innate lymphoid, NK and γδ T cells, dendritic cells and alveolar type II epithelial cells, glucocorticoid receptor and transcription factors". Recent work was placed in the context from articles in the last 10 years and older seminal research papers and comprehensive reviews. We excluded papers that did not focus on respiratory injury in the setting of oxidative stress. The pathways discussed here have however wide clinical implications to pathologies associated with inflammation and oxidative stress and in which glucocorticoid treatment is essential.
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Affiliation(s)
- Chioma Enweasor
- UC Davis Lung Center, University of California, Davis, CA, United States
| | - Cameron H. Flayer
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Angela Haczku
- UC Davis Lung Center, University of California, Davis, CA, United States
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39
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Engin AB. Combined Toxicity of Metal Nanoparticles: Comparison of Individual and Mixture Particles Effect. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1275:165-193. [PMID: 33539016 DOI: 10.1007/978-3-030-49844-3_7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Toxicity of metal nanoparticles (NPs) are closely associated with increasing intracellular reactive oxygen species (ROS) and the levels of pro-inflammatory mediators. However, NP interactions and surface complexation reactions alter the original toxicity of individual NPs. To date, toxicity studies on NPs have mostly been focused on individual NPs instead of the combination of several species. It is expected that the amount of industrial and highway-acquired NPs released into the environment will further increase in the near future. This raises the possibility that various types of NPs could be found in the same medium, thereby, the adverse effects of each NP either could be potentiated, inhibited or remain unaffected by the presence of the other NPs. After uptake of NPs into the human body from various routes, protein kinases pathways mediate their toxicities. In this context, family of mitogen-activated protein kinases (MAPKs) is mostly efficient. Despite each NP activates almost the same metabolic pathways, the toxicity induced by a single type of NP is different than the case of co-exposure to the combined NPs. The scantiness of toxicological data on NPs combinations displays difficulties to determine, if there is any risk associated with exposure to combined nanomaterials. Currently, in addition to mathematical analysis (Response surface methodology; RSM), the quantitative-structure-activity relationship (QSAR) is used to estimate the toxicity of various metal oxide NPs based on their physicochemical properties and levels applied. In this chapter, it is discussed whether the coexistence of multiple metal NPs alter the original toxicity of individual NP. Additionally, in the part of "Toxicity of diesel emission/exhaust particles (DEP)", the known individual toxicity of metal NPs within the DEP is compared with the data regarding toxicity of total DEP mixture.
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Affiliation(s)
- Ayse Basak Engin
- Department of Toxicology, Faculty of Pharmacy, Gazi University, Ankara, Turkey.
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40
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Lee KI, Chung YJ, Mo JH. The impact of air pollution on allergic rhinitis. ALLERGY ASTHMA & RESPIRATORY DISEASE 2021. [DOI: 10.4168/aard.2021.9.1.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ki-Il Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Konyang University College of Medicine, Daejeon, Korea
| | - Young-Jun Chung
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - Ji-Hun Mo
- Department of Otorhinolaryngology-Head and Neck Surgery, Dankook University College of Medicine, Cheonan, Korea
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41
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Gao Y, Huang X, Lin H, Zhao M, Liu W, Li W, Han L, Ma Q, Dong C, Li Y, Hu Y, Jin F. Adipose mesenchymal stem cell-derived antioxidative extracellular vesicles exhibit anti-oxidative stress and immunomodulatory effects under PM2.5 exposure. Toxicology 2021; 447:152627. [DOI: 10.1016/j.tox.2020.152627] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/09/2020] [Accepted: 11/01/2020] [Indexed: 01/08/2023]
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Abstract
Metabolic pathways and redox reactions are at the core of life. In the past decade(s), numerous discoveries have shed light on how metabolic pathways determine the cellular fate and function of lymphoid and myeloid cells, giving rise to an area of research referred to as immunometabolism. Upon activation, however, immune cells not only engage specific metabolic pathways but also rearrange their oxidation-reduction (redox) system, which in turn supports metabolic reprogramming. In fact, studies addressing the redox metabolism of immune cells are an emerging field in immunology. Here, we summarize recent insights revealing the role of reactive oxygen species (ROS) and the differential requirement of the main cellular antioxidant pathways, including the components of the thioredoxin (TRX) and glutathione (GSH) pathways, as well as their transcriptional regulator NF-E2-related factor 2 (NRF2), for proliferation, survival and function of T cells, B cells and macrophages.
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Affiliation(s)
- Jonathan Muri
- Institute of Molecular Health Sciences, Department of Biology, ETH Zürich, Zürich, Switzerland.
| | - Manfred Kopf
- Institute of Molecular Health Sciences, Department of Biology, ETH Zürich, Zürich, Switzerland.
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Inhibitory Effect of Delphinidin on Oxidative Stress Induced by H 2O 2 in HepG2 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:4694760. [PMID: 33274001 PMCID: PMC7700032 DOI: 10.1155/2020/4694760] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/14/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Chronic liver diseases (CLDs) are correlated with oxidative stress induced by the accumulation of intracellular reactive oxygen species (ROS). In this study, we employed HepG2, a human liver carcinoma cell line containing many antioxidant enzymes, to explore the function of delphinidin against oxidative stress induced by H2O2 and to provide scientific data of the molecular mechanism. Cells were pretreated with different concentrations of delphinidin (10 μmol/L, 20 μmol/L, and 40 μmol/L) for 2 h before treatment with 750 μM H2O2 for 1 h. The results showed that H2O2 decreased the survival rate of HepG2 cells and increased the level of ROS, but delphinidin pretreatment could possess the opposite result. At the same time, the expression of Nrf2 was enhanced by the delphinidin pretreatment. This was because delphinidin promoted Nrf2 nuclear translocation and inhibited its degradation, which led to the increase expression of antioxidant protein HO-1 (Nrf2-related phase II enzyme heme oxygenase-1). Besides, we found that delphinidin could significantly alleviate the reduction of Nrf2 protein levels and the accumulation of intracellular ROS levels in Nrf2 knockdown HepG2 cells. In conclusion, our study suggested that delphinidin, as an effective antioxidant, protected HepG2 cells from oxidative stress by regulating the expression of Nrf2/HO-1.
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Callaway DA, Jiang W, Wang L, Lingappan K, Moorthy B. Oxygen-mediated lung injury in mice lacking the gene for NRF2: Rescue with the cytochrome P4501A-inducer, beta-naphthoflavone (BNF), and differential sex-specific effects. Free Radic Biol Med 2020; 160:208-218. [PMID: 32791187 PMCID: PMC7704914 DOI: 10.1016/j.freeradbiomed.2020.07.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/15/2020] [Accepted: 07/22/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) leads to progressive lung injury, which significantly impacts patient morbidity and mortality but may differ clinically between the sexes. Cytochrome P450 (CYP) 1A enzymes are protective against hyperoxic lung injury and may contribute to sex-dependent pathology. NRF2 is a critical transcriptional regulator of antioxidants and loss of NRF2 leads to severe hyperoxic lung injury and mortality in mice. NRF2 deficiencies and polymorphisms have been observed in patients with pulmonary diseases such as chronic obstructive pulmonary disease and severe asthma. No prior studies have evaluated whether there are sex-specific differences in oxygen-mediated lung injury in Nrf2-/- mice and there are few rescue studies. OBJECTIVE To test the hypothesis that hyperoxia induces greater lung injury and inflammation in Nrf2-/- mice compared to wild type (WT) that differs between sexes, and that this phenotype will be rescued by the administration of the cytochrome P450 (CYP) 1A inducer beta-naphthoflavone (BNF). DESIGN/METHODS Male and female 8-10-week-old WT or Nrf2-/- C57BL/6 mice were pre-treated with BNF (40 mg/kg) or corn oil control and exposed to hyperoxia (95% O2) for 68 h. Survival, pulmonary edema, neutrophil recruitment, and lung injury scores were evaluated. Gene expression of phase II detoxification enzymes, pulmonary cytokines, and Cyp1a1/2 was quantified. CYP1A1/2 protein expression and catalytic activities were also measured. RESULTS Hyperoxia exposure greatly reduced survival in Nrf2-/- mice, particularly in females. BNF treatment improved survival by 182.8% in Nrf2-/- females and by 41.4% in Nrf2-/- males as well as in WT females by 85.7%. Females had greater pulmonary edema as measured by lung weight to body weight ratios but was attenuated in all groups except Nrf2-/- females by BNF. Neutrophils doubled in Nrf2-/- lungs compared to WT in hyperoxia but were decreased in BNF-treated females of both genotypes. Pulmonary cytokine gene expression including Il-6 and Tnf-α increased in hyperoxia especially in Nrf2-/- mice and was unaffected by BNF. Pulmonary and hepatic Nqo1 gene expression w-as decreased in Nrf2-/- mice and was largely unaffected by BNF; however pulmonary Ho-1 did not vary significantly between the genotypes and was decreased in WT animals treated with BNF. Activities and protein expression of pulmonary and hepatic CYP1A1/2 were induced via BNF across all groups. Although hepatic Cyp1a2 gene expression was higher in Nrf2-/- males, the catalytic activity was higher in Nrf2-/- females. CONCLUSIONS Hyperoxia augmented lung injury in Nrf2-/- mice, and pre-treatment with BNF was protective against mortality and injury, eliminating the sex-dependent survival difference in both genotypes. Our results support the hypothesis that NRF2 protects mice against lung injury, and the fact that BNF rescues the lung injury phenotype in Nrf2-/- mice suggests that augmented CYP1A expression by BNF may contribute to the beneficial effects. Further studies could lead to the development of BNF and other flavonoids for the prevention/treatment of hyperoxic lung injury, particularly in vulnerable patients with relative NRF2 deficiency, regardless of sex.
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Affiliation(s)
- Danielle A Callaway
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA
| | - Krithika Lingappan
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
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Rouadi PW, Idriss SA, Naclerio RM, Peden DB, Ansotegui IJ, Canonica GW, Gonzalez-Diaz SN, Rosario Filho NA, Ivancevich JC, Hellings PW, Murrieta-Aguttes M, Zaitoun FH, Irani C, Karam MR, Bousquet J. Immunopathological features of air pollution and its impact on inflammatory airway diseases (IAD). World Allergy Organ J 2020; 13:100467. [PMID: 33042360 PMCID: PMC7534666 DOI: 10.1016/j.waojou.2020.100467] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/31/2020] [Accepted: 09/11/2020] [Indexed: 12/14/2022] Open
Abstract
Air pollution causes significant morbidity and mortality in patients with inflammatory airway diseases (IAD) such as allergic rhinitis (AR), chronic rhinosinusitis (CRS), asthma, and chronic obstructive pulmonary disease (COPD). Oxidative stress in patients with IAD can induce eosinophilic inflammation in the airways, augment atopic allergic sensitization, and increase susceptibility to infection. We reviewed emerging data depicting the involvement of oxidative stress in IAD patients. We evaluated biomarkers, outcome measures and immunopathological alterations across the airway mucosal barrier following exposure, particularly when accentuated by an infectious insult.
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Key Words
- AR, Allergic rhinitis
- Air pollution
- Antioxidant
- COPD, Chronic obstructive pulmonary disease
- CRS, Chronic rhinosinusitis
- DEP, Diesel exhaust particles
- IAD, Inflammatory airway diseases
- IL, Interleukin
- ILC, Innate lymphoid cells
- Inflammatory airway disease
- NOx, Nitrogen oxides
- Oxidative stress biomarkers
- PAH, Polycyclic aromatic hydrocarbons
- PM, Particulate matter
- ROS, Reactive oxygen species
- TBS, Tobacco smoke
- TLR, Toll-like receptors
- Tobacco smoke
- Treg, Regulatory T cell
- VOCs, Volatile organic compounds
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Affiliation(s)
- Philip W. Rouadi
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Samar A. Idriss
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Robert M. Naclerio
- Johns Hopkins University Department of Otolaryngology - Head and Neck Surgery, Baltimore, MD, USA
| | - David B. Peden
- UNC Center for Environmental Medicine, Asthma, and Lung Biology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics UNS School of Medicine, USA
| | - Ignacio J. Ansotegui
- Department of Allergy and Immunology, Hospital Quironsalud Bizkaia, Bilbao, Spain
| | | | - Sandra Nora Gonzalez-Diaz
- University Autonoma de Nuevo Leon Facultad de Medicina y Hospital Universitario U.A.N.L, Monterrey, NL, c.p. 64460, México
| | | | - Juan Carlos Ivancevich
- Faculty of Medicine, Universidad del Salvador, Buenos Aires, Argentina and Head of Allergy and Immunology at the Santa Isabel Clinic, Buenos Aires, Argentina
| | - Peter W. Hellings
- Department of Otorhinolaryngology, University Hospitals Leuven, Leuven, Belgium
- Department of Otorhinolaryngology, Academic Medical Center Amsterdam, The Netherlands - Department Otorhinolaryngology, University Hospital Ghent, Belgium
| | | | - Fares H. Zaitoun
- LAUMC Rizk Hospital, Otolaryngology-Allergy Department, Beirut, Lebanon
| | - Carla Irani
- Department of Internal Medicine and Infectious Diseases, St Joseph University, Hotel Dieu de France Hospital, Beirut, Lebanon
| | - Marilyn R. Karam
- Division of Rheumatology, Allergy and Clinical Immunology, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Jean Bousquet
- INSERM U 1168, VIMA: Ageing and Chronic Diseases Epidemiological and Public Health Approaches, Villejuif, France
- University Versailles St-Quentin-en-Yvelines, France
- Allergy-Centre-Charité, Charité–Universitätsmedizin Berlin, Berlin, Germany
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46
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Gopallawa I, Lee RJ. Targeting the phosphoinositide-3-kinase/protein kinase B pathway in airway innate immunity. World J Biol Chem 2020; 11:30-51. [PMID: 33024516 PMCID: PMC7520643 DOI: 10.4331/wjbc.v11.i2.30] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/24/2020] [Accepted: 08/26/2020] [Indexed: 02/06/2023] Open
Abstract
The airway innate immune system maintains the first line of defense against respiratory infections. The airway epithelium and associated immune cells protect the respiratory system from inhaled foreign organisms. These cells sense pathogens via activation of receptors like toll-like receptors and taste family 2 receptors (T2Rs) and respond by producing antimicrobials, inflammatory cytokines, and chemokines. Coordinated regulation of fluid secretion and ciliary beating facilitates clearance of pathogens via mucociliary transport. Airway cells also secrete antimicrobial peptides and radicals to directly kill microorganisms and inactivate viruses. The phosphoinositide-3-kinase/protein kinase B (Akt) kinase pathway regulates multiple cellular targets that modulate cell survival and proliferation. Akt also regulates proteins involved in innate immune pathways. Akt phosphorylates endothelial nitric oxide synthase (eNOS) enzymes expressed in airway epithelial cells. Activation of eNOS can have anti-inflammatory, anti-bacterial, and anti-viral roles. Moreover, Akt can increase the activity of the transcription factor nuclear factor erythroid 2 related factor-2 that protects cells from oxidative stress and may limit inflammation. In this review, we summarize the recent findings of non-cancerous functions of Akt signaling in airway innate host defense mechanisms, including an overview of several known downstream targets of Akt involved in innate immunity.
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Affiliation(s)
- Indiwari Gopallawa
- Department of Otorhinolaryngology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Robert J Lee
- Department of Otorhinolaryngology and Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
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Toledo-Arruda AC, Sousa Neto IVD, Vieira RP, Guarnier FA, Caleman-Neto A, Suehiro CL, Olivo CR, Cecchini R, Prado CM, Lin CJ, Durigan JLQ, Martins MA. Aerobic exercise training attenuates detrimental effects of cigarette smoke exposure on peripheral muscle through stimulation of the Nrf2 pathway and cytokines: a time-course study in mice. Appl Physiol Nutr Metab 2020; 45:978-986. [PMID: 32813570 DOI: 10.1139/apnm-2019-0543] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Cigarette smoke (CS) exposure reduces skeletal muscle function; however, the mechanisms involved have been poorly investigated. The current study evaluated the temporal effects of aerobic exercise training on oxidant and antioxidant systems as well as inflammatory markers in skeletal muscle of mice exposed to CS. Mice were randomly allocated to control, exercise, smoke, and smoke+exercise groups and 3 time points (4, 8, and 12 weeks; n = 12 per group). Exercise training and CS exposure were performed for 30 min/day, twice a day, 5 days/week for 4, 8, and 12 weeks. Aerobic exercise improved functional capacity and attenuated the increase in the cachexia index induced by CS exposure after 12 weeks. Concomitantly, exercise training downregulated tumor necrosis factor α concentration, glutathione oxidation, and messenger RNA (mRNA) expression of Keap1 (P < 0.01) and upregulated interleukin 10 concentration, total antioxidant capacity, and mRNA expression of Nrf2, Gsr, and Txn1 (P < 0.01) in muscle. Exercise increased mRNA expression of Hmox1 compared with the control after 12 weeks (P < 0.05). There were no significant differences between smoke groups for superoxide dismutase activity and Hmox1 mRNA expression. Exercise training improved the ability of skeletal muscle to adequately upregulate key antioxidant and anti-inflammatory defenses to detoxify electrophilic compounds induced by CS exposure, and these effects were more pronounced after 12 weeks. Novelty Exercise attenuates oxidative stress in skeletal muscle from animals exposed to CS via Nrf2 and glutathione pathways. Exercise is a helpful tool to control the inflammatory balance in skeletal muscle from animals exposed to CS. These beneficial effects were evident after 12 weeks.
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Affiliation(s)
- Alessandra C Toledo-Arruda
- Department of Clinical Medicine (LIM-20), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil.,Department of Physiotherapy, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-590, Brazil
| | - Ivo Vieira de Sousa Neto
- Graduate Program of Sciences and Technology of Health, University of Brasília, Brasília, DF 72220-900, Brazil
| | - Rodolfo P Vieira
- Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), São José dos Campos, SP 12245-520, Brazil.,Postgraduate Programs in Bioengineering and Biomedical Engineering, Brazil University, São Paulo, SP 08230-030, Brazil.,Postgraduate Program in Sciences of Human Movement and Rehabilitation, Federal University of São Paulo (UNIFESP), Santos, SP 11060-001, Brazil.,Anhembi Morumbi University, School of Medicine, São José dos Campos, SP 12230-002, Brazil
| | - Flávia A Guarnier
- Department of Pathology, Londrina State University, Londrina, PR 86057-970, Brazil
| | - Agostinho Caleman-Neto
- Department of Clinical Medicine (LIM-20), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil
| | - Camila L Suehiro
- Department of Pathology, (LIM-22), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil
| | - Clarice R Olivo
- Department of Clinical Medicine (LIM-20), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil
| | - Rubens Cecchini
- Department of Pathology, Londrina State University, Londrina, PR 86057-970, Brazil
| | - Carla M Prado
- Department of Bioscience, Federal University of São Paulo (UNIFESP), Santos, SP 11015-020, Brazil
| | - Chin J Lin
- Department of Pathology, (LIM-22), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil
| | | | - Milton A Martins
- Department of Clinical Medicine (LIM-20), School of Medicine, University of São Paulo, São Paulo, SP 01246-903, Brazil
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Tretter V, Zach ML, Böhme S, Ullrich R, Markstaller K, Klein KU. Investigating Disturbances of Oxygen Homeostasis: From Cellular Mechanisms to the Clinical Practice. Front Physiol 2020; 11:947. [PMID: 32848874 PMCID: PMC7417655 DOI: 10.3389/fphys.2020.00947] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/14/2020] [Indexed: 12/22/2022] Open
Abstract
Soon after its discovery in the 18th century, oxygen was applied as a therapeutic agent to treat severely ill patients. Lack of oxygen, commonly termed as hypoxia, is frequently encountered in different disease states and is detrimental to human life. However, at the end of the 19th century, Paul Bert and James Lorrain Smith identified what is known as oxygen toxicity. The molecular basis of this phenomenon is oxygen's readiness to accept electrons and to form different variants of aggressive radicals that interfere with normal cell functions. The human body has evolved to maintain oxygen homeostasis by different molecular systems that are either activated in the case of oxygen under-supply, or to scavenge and to transform oxygen radicals when excess amounts are encountered. Research has provided insights into cellular mechanisms of oxygen homeostasis and is still called upon in order to better understand related diseases. Oxygen therapy is one of the prime clinical interventions, as it is life saving, readily available, easy to apply and economically affordable. However, the current state of research also implicates a reconsidering of the liberal application of oxygen causing hyperoxia. Increasing evidence from preclinical and clinical studies suggest detrimental outcomes as a consequence of liberal oxygen therapy. In this review, we summarize concepts of cellular mechanisms regarding different forms of disturbed cellular oxygen homeostasis that may help to better define safe clinical application of oxygen therapy.
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Affiliation(s)
- Verena Tretter
- Department of Anaesthesia, General Intensive Care and Pain Therapy, Medical University Vienna, Vienna, Austria
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49
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Mendonca P, Soliman KFA. Flavonoids Activation of the Transcription Factor Nrf2 as a Hypothesis Approach for the Prevention and Modulation of SARS-CoV-2 Infection Severity. Antioxidants (Basel) 2020; 9:E659. [PMID: 32722164 PMCID: PMC7463602 DOI: 10.3390/antiox9080659] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022] Open
Abstract
The Nrf2-Keap1-ARE pathway is the principal regulator of antioxidant and phase II detoxification genes. Its activation increases the expression of antioxidant and cytoprotective proteins, protecting cells against infections. Nrf2 modulates virus-induced oxidative stress, ROS generation, and disease pathogenesis, which are vital in the viral life cycle. During respiratory viral infections, such as the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), an inflammatory process, and oxidative stress of the epithelium lining cells activate the transcription factor Nrf2, which protects cells from oxidative stress and inflammation. Nrf2 reduces angiotensin-converting enzyme 2 (ACE2) receptors expression in respiratory epithelial cells. SARS-CoV2 has a high affinity for ACE2 that works as receptors for coronavirus surface spike glycoprotein, facilitating viral entry. Disease severity may also be modulated by pre-existing conditions, such as impaired immune response, obesity, and age, where decreased level of Nrf2 is a common feature. Consequently, Nrf2 activators may increase Nrf2 levels and enhance antiviral mediators' expression, which could initiate an "antiviral state", priming cells against viral infection. Therefore, this hypothesis paper describes the use of flavonoid supplements combined with vitamin D3 to activate Nrf2, which may be a potential target to prevent and/or decrease SARS-CoV-2 infection severity, reducing oxidative stress and inflammation, enhancing innate immunity, and downregulating ACE2 receptors.
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Affiliation(s)
| | - Karam F. A. Soliman
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA;
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50
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Adhikari A, Yin J. Short-Term Effects of Ambient Ozone, PM 2.5, and Meteorological Factors on COVID-19 Confirmed Cases and Deaths in Queens, New York. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E4047. [PMID: 32517125 PMCID: PMC7312351 DOI: 10.3390/ijerph17114047] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/18/2020] [Accepted: 06/03/2020] [Indexed: 12/15/2022]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19), caused by the virus SARS-CoV-2, has been rapidly increasing in the United States. Boroughs of New York City, including Queens county, turn out to be the epicenters of this infection. According to the data provided by the New York State Department of Health, most of the cases of new COVID-19 infections in New York City have been found in the Queens county where 42,023 people have tested positive, and 3221 people have died as of 20 April 2020. Person-to-person transmission and travels were implicated in the initial spread of the outbreaks, but factors related to the late phase of rapidly spreading outbreaks in March and April are still uncertain. A few previous studies have explored the links between air pollution and COVID-19 infections, but more data is needed to understand the effects of short-term exposures of air pollutants and meteorological factors on the spread of COVID-19 infections, particularly in the U.S. disease epicenters. In this study, we have focused on ozone and PM2.5, two major air pollutants in New York City, which were previously found to be associated with respiratory viral infections. The aim of our regression modeling was to explore the associations among ozone, PM2.5, daily meteorological variables (wind speed, temperature, relative humidity, absolute humidity, cloud percentages, and precipitation levels), and COVID-19 confirmed new cases and new deaths in Queens county, New York during March and April 2020. The results from these analyses showed that daily average temperature, daily maximum eight-hour ozone concentration, average relative humidity, and cloud percentages were significantly and positively associated with new confirmed cases related to COVID-19; none of these variables showed significant associations with new deaths related to COVID-19. The findings indicate that short-term exposures to ozone and other meteorological factors can influence COVID-19 transmission and initiation of the disease, but disease aggravation and mortality depend on other factors.
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Affiliation(s)
- Atin Adhikari
- Department of Biostatistics, Epidemiology & Environmental Health Sciences, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA
| | - Jingjing Yin
- Department of Biostatistics, Epidemiology & Environmental Health Sciences, Jiann-Ping Hsu College of Public Health, Georgia Southern University, Statesboro, GA 30460, USA
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