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Ding W, Li R, Song T, Yang Z, Xu D, Huang C, Shen S, Zhong N, Lai K, Deng Z. AMG487 alleviates influenza A (H1N1) virus-induced pulmonary inflammation through decreasing IFN-γ-producing lymphocytes and IFN-γ concentrations. Br J Pharmacol 2024; 181:2053-2069. [PMID: 38500396 DOI: 10.1111/bph.16343] [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: 09/19/2023] [Revised: 01/17/2024] [Accepted: 02/01/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND AND PURPOSE Severe influenza virus-infected patients have high systemic levels of Th1 cytokines (including IFN-γ). Intrapulmonary IFN-γ increases pulmonary IFN-γ-producing T lymphocytes through the CXCR3 pathway. Virus-infected mice lacking IP-10/CXCR3 demonstrate lower pulmonary neutrophilic inflammation. AMG487, an IP-10/CXCR3 antagonist, ameliorates virus-induced lung injury in vivo through decreasing viral loads. This study examined whether AMG487 could treat H1N1 virus-induced mouse illness through reducing viral loads or decreasing the number of lymphocytes or neutrophils. EXPERIMENTAL APPROACH Here, we studied the above-mentioned effects and underlying mechanisms in vivo. KEY RESULTS H1N1 virus infection caused bad overall condition and pulmonary inflammation characterized by the infiltration of lymphocytes and neutrophils. From Day-5 to Day-10 post-virus infection, bad overall condition, pulmonary lymphocytes, and IFN-γ concentrations increased, while pulmonary H1N1 viral titres and neutrophils decreased. Both anti-IFN-γ and AMG487 alleviated virus infection-induced bad overall condition and pulmonary lymphocytic inflammation. Pulmonary neutrophilic inflammation was mitigated by AMG487 on Day-5 post-infection, but was not mitigated by AMG487 on Day-10 post-infection. H1N1 virus induced increases of IFN-γ, IP-10, and IFN-γ-producing lymphocytes and activation of the Jak2-Stat1 pathways in mouse lungs, which were inhibited by AMG487. Anti-IFN-γ decreased IFN-γ and IFN-γ-producing lymphocytes on Day-5 post-infection. AMG487 but not anti-IFN-γ decreased viral titres in mouse lung homogenates or BALF. Higher virus load did not increase pulmonary inflammation and IFN-γ concentrations when mice were treated with AMG487. CONCLUSION AND IMPLICATIONS AMG487 may ameliorate H1N1 virus-induced pulmonary inflammation through decreasing IFN-γ-producing lymphocytes rather than reducing viral loads or neutrophils.
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Affiliation(s)
- Wenbin Ding
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Runfeng Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Tongtong Song
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zifeng Yang
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Dongting Xu
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chuqin Huang
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shuirong Shen
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Kefang Lai
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zheng Deng
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Zang X, Qin W, Xiong Y, Xu A, Huang H, Fang T, Zang X, Chen M. Using three statistical methods to analyze the association between aldehyde exposure and markers of inflammation and oxidative stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27717-4. [PMID: 37286832 DOI: 10.1007/s11356-023-27717-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/13/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND Exposure to aldehydes has been linked to adverse health outcomes such as inflammation and oxidative stress, but research on the effects of these compounds is limited. This study is aimed at assessing the association between aldehyde exposure and markers of inflammation and oxidative stress. METHODS The study used data from the NHANES 2013-2014 survey (n = 766) and employed multivariate linear models to investigate the relationship between aldehyde compounds and various markers of inflammation (alkaline phosphatase (ALP) level, absolute neutrophil count (ANC), and lymphocyte count) and oxidative stress (bilirubin, albumin, and iron levels) while controlling for other relevant factors. In addition to generalized linear regression, weighted quantile sum (WQS) and Bayesian kernel machine regression (BKMR) analyses were applied to examine the single or overall effect of aldehyde compounds on the outcomes. RESULTS In the multivariate linear regression model, each 1 standard deviation (SD) change in propanaldehyde and butyraldehyde was significantly associated with increases in serum iron levels (beta and 95% confidence interval, 3.25 (0.24, 6.27) and 8.40 (0.97, 15.83), respectively) and the lymphocyte count (0.10 (0.04, 0.16) and 0.18 (0.03, 0.34), respectively). In the WQS regression model, a significant association was discovered between the WQS index and both the albumin and iron levels. Furthermore, the results of the BKMR analysis showed that the overall impact of aldehyde compounds was significantly and positively correlated with the lymphocyte count, as well as the levels of albumin and iron, suggesting that these compounds may contribute to increased oxidative stress. CONCLUSIONS This study reveals the close association between single or overall aldehyde compounds and markers of chronic inflammation and oxidative stress, which has essential guiding value for exploring the impact of environmental pollutants on population health.
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Affiliation(s)
- Xiaodong Zang
- Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Wengang Qin
- Department of Pediatrics, Provincial Hospital Affiliated to Anhui Medical University, Hefei, 230001, Anhui, China
| | - Yingying Xiong
- Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Anlan Xu
- Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Hesuyuan Huang
- Orthopedics Department, Peking University Shougang Hospital, Beijing, 100144, China
| | - Tao Fang
- Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China
| | - Xiaowei Zang
- College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Mingwu Chen
- Department of Pediatrics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, Anhui, China.
- Department of Pediatrics, Provincial Hospital Affiliated to Anhui Medical University, Hefei, 230001, Anhui, China.
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Rashad WA, Sakr S, Domouky AM. Comparative study of oral versus parenteral crocin in mitigating acrolein-induced lung injury in albino rats. Sci Rep 2022; 12:10233. [PMID: 35715565 PMCID: PMC9205959 DOI: 10.1038/s41598-022-14252-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/03/2022] [Indexed: 11/10/2022] Open
Abstract
Acrolein (Ac) is the second most commonly inhaled toxin, produced in smoke of fires, tobacco smoke, overheated oils, and fried foods; and usually associated with lung toxicity. Crocin (Cr) is a natural carotenoid with a direct antioxidant capacity. Yet, oral administration of crocin as a natural rout is doubtful, because of poor absorbability. Therefore, the current study aimed to compare the potential protective effect of oral versus intraperitoneal (ip) crocin in mitigating Ac-induced lung toxicity. 50 Adult rats were randomly divided into 5 equal groups; Control (oral-saline and ip-saline) group, Cr (oral-Cr and ip-Cr) group, Ac group, oral-Cr/Ac group, and ip-Cr/Ac group; for biochemical, histopathological, and immunohistochemical investigations. Results indicated increased oxidative stress and inflammatory biomarkers in lungs of Ac-treated group. Histopathological and immunohistochemical examinations revealed lung edema, infiltration, fibrosis, and altered expression of apoptotic and anti-apoptotic markers. Compared to oral-Cr/Ac group, the ip-Cr/Ac group demonstrated remarkable improvement in the oxidative, inflammatory, and apoptotic biomarkers, as well as the histopathological alterations. In conclusion, intraperitoneal crocin exerts a more protective effect on acrolein-induced lung toxicity than the orally administered crocin.
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Affiliation(s)
- Walaa Abdelhaliem Rashad
- Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Alsharquiah, Egypt.
| | - Samar Sakr
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Zagazig University, Alsharquiah, Egypt
| | - Ayat M Domouky
- Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Alsharquiah, Egypt
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4
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Food additive octyl gallate eliminates acrolein and inhibits bacterial growth in oil-rich food. Food Chem 2022; 395:133546. [DOI: 10.1016/j.foodchem.2022.133546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 06/04/2022] [Accepted: 06/19/2022] [Indexed: 11/18/2022]
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Wong ET, Szostak J, Titz B, Lee T, Wong SK, Lavrynenko O, Merg C, Corciulo M, Simicevic J, Auberson M, Peric D, Dulize R, Bornand D, Loh GJ, Lee KM, Zhang J, Miller JH, Schlage WK, Guedj E, Schneider T, Phillips B, Leroy P, Choukrallah MA, Sierro N, Buettner A, Xiang Y, Kuczaj A, Ivanov NV, Luettich K, Vanscheeuwijck P, Peitsch MC, Hoeng J. A 6-month inhalation toxicology study in Apoe -/- mice demonstrates substantially lower effects of e-vapor aerosol compared with cigarette smoke in the respiratory tract. Arch Toxicol 2021; 95:1805-1829. [PMID: 33963423 PMCID: PMC8113187 DOI: 10.1007/s00204-021-03020-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/03/2021] [Indexed: 11/26/2022]
Abstract
Cigarette smoking is the major cause of chronic obstructive pulmonary disease. Considerable attention has been paid to the reduced harm potential of nicotine-containing inhalable products such as electronic cigarettes (e-cigarettes). We investigated the effects of mainstream cigarette smoke (CS) and e-vapor aerosols (containing nicotine and flavor) generated by a capillary aerosol generator on emphysematous changes, lung function, and molecular alterations in the respiratory system of female Apoe-/- mice. Mice were exposed daily (3 h/day, 5 days/week) for 6 months to aerosols from three different e-vapor formulations-(1) carrier (propylene glycol and vegetable glycerol), (2) base (carrier and nicotine), or (3) test (base and flavor)-or to CS from 3R4F reference cigarettes. The CS and base/test aerosol concentrations were matched at 35 µg nicotine/L. CS exposure, but not e-vapor exposure, led to impairment of lung function (pressure-volume loop area, A and K parameters, quasi-static elastance and compliance) and caused marked lung inflammation and emphysematous changes, which were confirmed histopathologically and morphometrically. CS exposure caused lung transcriptome (activation of oxidative stress and inflammatory responses), lipidome, and proteome dysregulation and changes in DNA methylation; in contrast, these effects were substantially reduced in response to the e-vapor aerosol exposure. Compared with sham, aerosol exposure (carrier, base, and test) caused a slight impact on lung inflammation and epithelia irritation. Our results demonstrated that, in comparison with CS, e-vapor aerosols induced substantially lower biological and pathological changes in the respiratory tract associated with chronic inflammation and emphysema.
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Affiliation(s)
- Ee Tsin Wong
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd, Science Park II, Singapore, 117406, Singapore
| | - Justyna Szostak
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
| | - Bjoern Titz
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Tom Lee
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd, Science Park II, Singapore, 117406, Singapore
| | - Sin Kei Wong
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd, Science Park II, Singapore, 117406, Singapore
| | - Oksana Lavrynenko
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Celine Merg
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Maica Corciulo
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Jovan Simicevic
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Mehdi Auberson
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Dariusz Peric
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Remi Dulize
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - David Bornand
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Guo Jie Loh
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd, Science Park II, Singapore, 117406, Singapore
| | | | - Jingjie Zhang
- Altria Client Services LLC, 601 East Jackson Street, Richmond, VA, 23219, USA
| | - John H Miller
- Altria Client Services LLC, 601 East Jackson Street, Richmond, VA, 23219, USA
| | | | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Thomas Schneider
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Blaine Phillips
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd, Science Park II, Singapore, 117406, Singapore
| | - Patrice Leroy
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | | | - Nicolas Sierro
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | | | - Yang Xiang
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Arkadiusz Kuczaj
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Karsta Luettich
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | | | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A, Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland
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Kumar A, Kogel U, Talikka M, Merg C, Guedj E, Xiang Y, Kondylis A, Titz B, Ivanov NV, Hoeng J, Peitsch M, Allen J, Gupta A, Skowronek A, Lee KM. A 7-month inhalation toxicology study in C57BL/6 mice demonstrates reduced pulmonary inflammation and emphysematous changes following smoking cessation or switching to e-vapor products. TOXICOLOGY RESEARCH AND APPLICATION 2021. [DOI: 10.1177/2397847321995875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cigarette smoking causes serious diseases, including lung cancer, atherosclerotic coronary artery disease, peripheral vascular disease, chronic bronchitis, and emphysema. While cessation remains the most effective approach to minimize smoking-related disease, alternative non-combustible tobacco-derived nicotine-containing products may reduce disease risks among those unable or unwilling to quit. E-vapor aerosols typically contain significantly lower levels of smoke-related harmful and potentially harmful constituents; however, health risks of long-term inhalation exposures are unknown. We designed a 7-month inhalation study in C57BL/6 mice to evaluate long-term respiratory toxicity of e-vapor aerosols compared to cigarette smoke and to assess the impact of smoking cessation (Cessation group) or switching to an e-vapor product (Switching group) after 3 months of exposure to 3R4F cigarette smoke (CS). There were no significant changes in in-life observations (body weights, clinical signs) in e-vapor groups compared to the Sham Control. The 3R4F CS group showed reduced respiratory function during exposure and had lower body weight and showed transient signs of distress post-exposure. Following 7 months of exposure, e-vapor aerosols resulted in no or minimal increase in pulmonary inflammation, while exposure to 3R4F CS led to impairment of lung function and caused marked lung inflammation and emphysematous changes. Biological changes observed in the Switching group were similar to the Cessation group. 3R4F CS exposure dysregulated the lung and nasal tissue transcriptome, while these molecular effects were substantially lower in the e-vapor group. Results from this study demonstrate that in comparison with 3R4F CS, e-vapor aerosols induce substantially lower biological responses including pulmonary inflammation and emphysematous changes, and that complete switching from CS to e-vapor products significantly reduces biological changes associated with CS in C57BL/6 mice.
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Affiliation(s)
| | - Ulrike Kogel
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Marja Talikka
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Celine Merg
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Yang Xiang
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | | | - Bjoern Titz
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | | | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Manuel Peitsch
- PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
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Side Effects of Coronary Stenting such as Severe Coronary Stenosis and Multiple Coronary Chronic Total Occlusions in Elderly Patients via Induced Proinflammatory and Prooxidative Stress. Mediators Inflamm 2019; 2019:7147652. [PMID: 31780868 PMCID: PMC6875236 DOI: 10.1155/2019/7147652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 09/19/2019] [Accepted: 10/08/2019] [Indexed: 11/17/2022] Open
Abstract
Background Severe coronary stenosis and multiple coronary chronic total occlusions are serious side effects of coronary stent implantation in elderly patients. This research sought to investigate the side effects of coronary stenting such as severe coronary stenosis and multiple coronary chronic total occlusions in elderly patients via induced proinflammatory and prooxidative stress. Methods We evaluated the expression levels of tumor necrosis factor-α (TNF-α), toll-like receptor 4 (TLR4), acrolein (ACR), malondialdehyde (MDA), high-sensitivity C-reactive protein (hs-CRP), stromal cell-derived factor-1α (SDF-1α), superoxide dismutase 3 (SOD3), and endothelial nitric oxide synthase (eNOS) in elderly patients with severe coronary stenosis and multiple coronary chronic total occlusions. Results Levels of TNF-α, TLR4, ACR, MDA, and hs-CRP were remarkably increased (P < 0.001), and levels of SDF-1α, SOD3, and eNOS were remarkably lowered (P < 0.001) in elderly patients with severe coronary stenosis and multiple coronary chronic total occlusions. Coronary stenting induced proinflammatory and prooxidant mediator expression and inhibited anti-inflammatory/antioxidant mediators. The proinflammatory and prooxidant mediators may be involved in severe coronary stenosis and multiple coronary chronic total occlusions in elderly patients. Conclusions Side effects such as severe coronary stenosis and multiple coronary chronic total occlusions because of coronary stenting in elderly patients were induced by proinflammatory and prooxidative stress. Circulating proinflammatory and prooxidant mediators could predict early severe coronary stenosis and multiple coronary chronic total occlusions in elderly coronary heart disease patients.
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Higashi T, Mai Y, Mazaki Y. Protein kinase C-dependent cell damage by unsaturated carbonyl compounds in vascular cells. J Biosci Bioeng 2018; 126:527-532. [DOI: 10.1016/j.jbiosc.2018.04.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/26/2018] [Accepted: 04/27/2018] [Indexed: 11/26/2022]
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9
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Wang L, Yang Z, Xu L, Pan X, Liu X, Zhao J, Li X, Zhu M, Xie J. Acute exposure to crotonaldehyde induces dysfunction of immune system in male Wistar rats. J Toxicol Sci 2018; 43:33-44. [PMID: 29415950 DOI: 10.2131/jts.43.33] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Crotonaldehyde is a ubiquitous air pollutant in the environment. It is reported to be harmful to the biosystems in vivo and in vitro. The exposure to crotonaldehyde irritates the mucous membranes and induces edema, hyperemia, cell necrosis, inflammation, and acute respiratory distress syndrome in the lungs. However, the effects of crotonaldehyde on the immune system have not been reported. In the present study, 6-8 weeks old male Wistar rats were exposed to crotonaldehyde by intratracheal instillation at doses of 4, 8, and 16 μL/kg body weight (b.w.). The general damage in the animals was investigated; the cell counting and the biochemical analysis in the peripheral blood were tested. Furthermore, we investigated the functions of alveolar macrophages (AMs), the alterations of the T-lymphocyte subsets, and the cell composition in the bronchoalveolar lavage fluid (BALF). We found that the activities of the animals were changed after exposure to crotonaldehyde, the cellular ratios and the biochemical components in the peripheral blood were altered, the ratio of mononuclear phagocytes decreased, and the ratios of lymphocytes and granulocytes elevated significantly in BALF. Meanwhile, crotonaldehyde altered the ratio of the T-lymphocyte subsets, and the phagocytic rates and indices of AMs increased obviously. In conclusion, crotonaldehyde induces dysfunction of immune system in male Wistar rats.
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Affiliation(s)
- Limeng Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China.,University of Chinese Academy of Sciences, China
| | - Zhihua Yang
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, China
| | - Long Xu
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, China
| | - Xiujie Pan
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, China
| | - Xingyu Liu
- Shanghai Tobacco Group Corporation of CNTC, China
| | - Junwei Zhao
- Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute of CNTC, China
| | - Xiang Li
- Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute of CNTC, China
| | - Maoxiang Zhu
- Department of Radiation Toxicology and Oncology, Beijing Institute of Radiation Medicine, China
| | - Jianping Xie
- Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute of CNTC, China
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Panton-Valentine Leukocidin associated with S. aureus osteomyelitis activates platelets via neutrophil secretion products. Sci Rep 2018; 8:2185. [PMID: 29391581 PMCID: PMC5794969 DOI: 10.1038/s41598-018-20582-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/15/2018] [Indexed: 02/01/2023] Open
Abstract
Globalization and migration promote the spread of Panton-Valentine leukocidin (PVL)-positive Staphylococcus aureus strains. The toxin PVL is linked to the development of thrombosis in association with osteomyelitis. The mechanisms by which PVL drives thrombosis development are however still unknown. We demonstrate that PVL-damaged neutrophils activate platelets via neutrophil secretion products, such as α-defensins and the myeloperoxidase product HOCl, as well as the formation of HOCl-modified proteins. Neutrophil damage by PVL is blocked by anti-PVL-antibodies, explaining why especially young osteomyelitis patients with a low antibody titre against PVL suffer from thrombotic complications. Platelet activation in the presence of PVL-damaged neutrophils is prevented by α-defensin inhibitors and by glutathione and resveratrol, which are both inhibitors of HOCl-modified protein-induced platelet activation. Remarkably, intravenously infused glutathione also prevents activation of human platelets in an ex vivo assay. We here describe a new mechanism of PVL-neutrophil-platelet interactions, which might be extrapolated to other toxins that act on neutrophils. Our observations may make us think about new approaches to treat and/or prevent thrombotic complications in the course of infections with PVL-producing S. aureus strains.
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Yao L, Wu YT, Tian GX, Xia CQ, Zhang F, Zhang W. Acrolein Scavenger Hydralazine Prevents Streptozotocin-Induced Painful Diabetic Neuropathy and Spinal Neuroinflammation in Rats. Anat Rec (Hoboken) 2017; 300:1858-1864. [PMID: 28598552 DOI: 10.1002/ar.23618] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/06/2017] [Accepted: 03/02/2017] [Indexed: 01/12/2023]
Abstract
Diabetes-induced neuropathic pain (DNP) substantially influences people's life qualities. Hyperglycemia-induced excess free radicals have been considered as the most critical mechanisms underlying DNP. As an unsaturated aldehyde and a reactive product of lipid peroxidation, acrolein plays critical roles in diabetic nephropathy and inflammatory pain. We sought to determine whether acrolein is involved in DNP in this study. Diabetes was induced by a single intraperitoneal (i.p.) injection of 60 mg/kg streptozotocin (STZ). An acrolein scavenger hydralazine (5 mg/kg) was administered through a daily injection for 4 weeks, starting immediately within 30 min after STZ injection. Western blot showed that hydralazine could effectively inhibit STZ-induced upregulation of acrolein in the spinal dorsal horn on day 7-28 after STZ injection. Behavioral tests showed that STZ injection induced significant mechanical allodynia and thermal hyperalgesia, which could be alleviated by hydralazine. Immunofluorescent histochemistry and Western blot showed that STZ induced significant microglial activation. ELISA data indicated upregulation of inflammatory cytokines IL-1β and TNF-α expression in the spinal dorsal horn. Furthermore, hydralazine effectively attenuated microglial activation and expression of inflammatory mediators. Our data indicate that acrolein might be involved in the development of neuroinflammation and behavioral consequences of DNP. Anat Rec, 2017. © 2017 Wiley Periodicals, Inc. Anat Rec, 300:1858-1864, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Lu Yao
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
| | - Yun-Tao Wu
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
| | - Guo-Xiang Tian
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
| | - Chang-Quan Xia
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
| | - Feng Zhang
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
| | - Wei Zhang
- Department of Forth Cadre, PLA Army General Hospital, No. 5 Nanmencang, Dongcheng District, Beijing, 10070, China
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Moghe A, Ghare S, Lamoreau B, Mohammad M, Barve S, McClain C, Joshi-Barve S. Molecular mechanisms of acrolein toxicity: relevance to human disease. Toxicol Sci 2015; 143:242-55. [PMID: 25628402 DOI: 10.1093/toxsci/kfu233] [Citation(s) in RCA: 316] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Acrolein, a highly reactive unsaturated aldehyde, is a ubiquitous environmental pollutant and its potential as a serious environmental health threat is beginning to be recognized. Humans are exposed to acrolein per oral (food and water), respiratory (cigarette smoke, automobile exhaust, and biocide use) and dermal routes, in addition to endogenous generation (metabolism and lipid peroxidation). Acrolein has been suggested to play a role in several disease states including spinal cord injury, multiple sclerosis, Alzheimer's disease, cardiovascular disease, diabetes mellitus, and neuro-, hepato-, and nephro-toxicity. On the cellular level, acrolein exposure has diverse toxic effects, including DNA and protein adduction, oxidative stress, mitochondrial disruption, membrane damage, endoplasmic reticulum stress, and immune dysfunction. This review addresses our current understanding of each pathogenic mechanism of acrolein toxicity, with emphasis on the known and anticipated contribution to clinical disease, and potential therapies.
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Affiliation(s)
- Akshata Moghe
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Smita Ghare
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Bryan Lamoreau
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Mohammad Mohammad
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Shirish Barve
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202 *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Craig McClain
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202 *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202 *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
| | - Swati Joshi-Barve
- *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202 *Department of Pharmacology and Toxicology, Department of Medicine and Robley Rex VAMC, Louisville, Kentucky 40202
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Wu Z, He EY, Scott GI, Ren J. α,β-Unsaturated aldehyde pollutant acrolein suppresses cardiomyocyte contractile function: Role of TRPV1 and oxidative stress. ENVIRONMENTAL TOXICOLOGY 2015; 30:638-647. [PMID: 24376112 DOI: 10.1002/tox.21941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/12/2013] [Accepted: 12/12/2013] [Indexed: 06/03/2023]
Abstract
Air pollution is associated with an increased prevalence of heart disease and is known to trigger a proinflammatory response via stimulation of transient receptor potential vanilloid cation channels (TRPV1, also known as the capsaicin receptor). This study was designed to examine the effect of acrolein, an essential α,β-unsaturated aldehyde pollutant, on myocardial contractile function and the underlying mechanism involved with a focus on TRPV1 and oxidative stress. Cardiomyocyte mechanical and intracellular Ca(2+) properties were evaluated using an IonOptix MyoCam® system including peak shortening (PS), maximal velocity of shortening/relengthening (± dL/dt), time-to-PS (TPS), time-to-90% relengthening (TR90 ), fura-2 fluorescence intensity (FFI) and intracellular Ca(2+) decay. Changes in apoptosis and TRPV1 were evaluated using Western blot analysis. The degree of oxidative stress was assessed using the ratio between reduced and oxidized glutathione. Results obtained revealed that exposure of cardiomyocytes to acrolein acutely compromised contractile and intracellular Ca(2+) properties including depressed PS, ± dL/dt and ΔFFI, as well as prolonged TR90 and intracellular Ca(2+) decay. In addition, acrolein exposure upregulated TRPV1 associated with an increase in both apoptosis and oxidative stress. However, the acrolein-induced cardiomyocyte contractile and intracellular Ca(2+) anomalies, as well as apoptosis (as evidenced by Bcl-2, Bax, FasL, Caspase-3 and -8), were negated by the reactive oxygen species (ROS) scavenger glutathione or the TRPV1 antagonist capsazepine. Collectively these data suggest that the α,β-unsaturated aldehyde pollutant acrolein may play a role in the pathogenesis and sequelae of air pollution-induced heart disease via a TRPV1- and oxidative stress-dependent mechanism.
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Affiliation(s)
- Zhenbiao Wu
- Department of Clinical Immunology, Xijing Hospital, the Fourth Military Medical University, Xi'an, 710032, China
| | - Emily Y He
- Department of Clinical Immunology, Xijing Hospital, the Fourth Military Medical University, Xi'an, 710032, China
- Center for Cardiovascular Research and Alternative Medicine, School of Pharmacy, University of Wyoming College of Health Sciences, Laramie, Wyoming, 82071
| | - Glenda I Scott
- Center for Cardiovascular Research and Alternative Medicine, School of Pharmacy, University of Wyoming College of Health Sciences, Laramie, Wyoming, 82071
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, School of Pharmacy, University of Wyoming College of Health Sciences, Laramie, Wyoming, 82071
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Rider CV, Boekelheide K, Catlin N, Gordon CJ, Morata T, Selgrade MK, Sexton K, Simmons JE. Cumulative risk: toxicity and interactions of physical and chemical stressors. Toxicol Sci 2013; 137:3-11. [PMID: 24154487 DOI: 10.1093/toxsci/kft228] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Recent efforts to update cumulative risk assessment procedures to incorporate nonchemical stressors ranging from physical to psychosocial reflect increased interest in consideration of the totality of variables affecting human health and the growing desire to develop community-based risk assessment methods. A key roadblock is the uncertainty as to how nonchemical stressors behave in relationship to chemical stressors. Physical stressors offer a reasonable starting place for measuring the effects of nonchemical stressors and their modulation of chemical effects (and vice versa), as they clearly differ from chemical stressors; and "doses" of many physical stressors are more easily quantifiable than those of psychosocial stressors. There is a commonly held belief that virtually nothing is known about the impact of nonchemical stressors on chemically mediated toxicity or the joint impact of coexposure to chemical and nonchemical stressors. Although this is generally true, there are several instances where a substantial body of evidence exists. A workshop titled "Cumulative Risk: Toxicity and Interactions of Physical and Chemical Stressors" held at the 2013 Society of Toxicology Annual Meeting provided a forum for discussion of research addressing the toxicity of physical stressors and what is known about their interactions with chemical stressors, both in terms of exposure and effects. Physical stressors including sunlight, heat, radiation, infectious disease, and noise were discussed in reference to identifying pathways of interaction with chemical stressors, data gaps, and suggestions for future incorporation into cumulative risk assessments.
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Affiliation(s)
- Cynthia V Rider
- * Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709
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