1
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He X, Smith MR, Jarrell ZR, Thi Ly V, Liang Y, Lee CM, Orr M, Go YM, Jones DP. Metabolic alterations and mitochondrial dysfunction in human airway BEAS-2B cells exposed to vanadium pentoxide. Toxicology 2024; 504:153772. [PMID: 38479551 DOI: 10.1016/j.tox.2024.153772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/25/2024] [Accepted: 03/09/2024] [Indexed: 03/24/2024]
Abstract
Vanadium pentoxide (V+5) is a hazardous material that has drawn considerable attention due to its wide use in industrial sectors and increased release into environment from human activities. It poses potential adverse effects on animals and human health, with pronounced impact on lung physiology and functions. In this study, we investigated the metabolic response of human bronchial epithelial BEAS-2B cells to low-level V+5 exposure (0.01, 0.1, and 1 ppm) using liquid chromatography-high resolution mass spectrometry (LC-HRMS). Exposure to V+5 caused extensive changes to cellular metabolism in BEAS-2B cells, including TCA cycle, glycolysis, fatty acids, amino acids, amino sugars, nucleotide sugar, sialic acid, vitamin D3, and drug metabolism, without causing cell death. Altered mitochondrial structure and function were observed with as low as 0.01 ppm (0.2 μM) V+5 exposure. In addition, decreased level of E-cadherin, the prototypical epithelial marker of epithelial-mesenchymal transition (EMT), was observed following V+5 treatment, supporting potential toxicity of V+5 at low levels. Taken together, the present study shows that V+5 has adverse effects on mitochondria and the metabolome which may result in EMT activation in the absence of cell death. Furthermore, results suggest that high-resolution metabolomics could serve as a powerful tool to investigate metal toxicity at levels which do not cause cell death.
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Affiliation(s)
- Xiaojia He
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Matthew Ryan Smith
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA; Atlanta Department of Veterans Affairs Healthcare System, Decatur, GA 30322, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - ViLinh Thi Ly
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Yongliang Liang
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Choon-Myung Lee
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA.
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA.
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2
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Lee CM, Jarrell ZR, Lee HY, Singer G, Tran VT, Orr M, Jones DP, Go YM. Protein S-palmitoylation enhances profibrotic signaling in response to cadmium. Toxicol Appl Pharmacol 2024; 483:116806. [PMID: 38195004 PMCID: PMC10923080 DOI: 10.1016/j.taap.2024.116806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/26/2023] [Accepted: 01/03/2024] [Indexed: 01/11/2024]
Abstract
Cadmium (Cd) is a naturally occurring, toxic environmental metal found in foods. Humans do not have an efficient mechanism for Cd elimination; thus, Cd burden in humans increases with age. Cell and mouse studies show that Cd burden from low environmental levels of exposure impacts lung cell metabolism, proliferation signaling and cell growth as part of disease-promoting profibrotic responses in the lungs. Prior integrative analysis of metabolomics and transcriptomics identified the zDHHC11 transcript as a central functional hub in response to Cd dose. zDHHC11 encodes a protein S-palmitoyltransferase, but no evidence is available for effects of Cd on protein S-palmitoylation. In the present research, we studied palmitoylation changes in response to Cd and found increased protein S-palmitoylation in human lung fibroblasts that was inhibited by 2-bromopalmitate (2-BP), an irreversible palmitoyltransferase inhibitor. Mass spectrometry-based proteomics showed palmitoylation of proteins involved in divalent metal transport and in fibrotic signaling. Mechanistic studies showed that 2-BP inhibited palmitoylation of divalent metal ion transporter ZIP14 and also inhibited cellular Cd uptake. Transcription analyses showed that Cd stimulated transforming growth factor (TGF)-β1 and β3 expression within 8 h and lung fibrotic markers α-smooth muscle actin, matrix metalloproteinase-2, and collagen 1α1 gene expression and that these effects were blocked by 2-BP. Because 2-BP also blocked palmitoylation of proteins controlled by TGFβ1, these results show that palmitoylation impacts Cd-dependent fibrotic signaling both by enhancing cellular Cd accumulation and by supporting post-translational processing of TGFβ1-dependent proteins.
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Affiliation(s)
- Choon-Myung Lee
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Ho Young Lee
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Grant Singer
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - ViLinh Thi Tran
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA.
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3
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Cheng R, Luo A, Orr M, Ge D, Hou Z, Qu Y, Guo B, Zhang F, Sha Z, Zhao Z, Wang M, Shi X, Han H, Zhou Q, Li Y, Liu X, Shao C, Zhang A, Zhou X, Zhu C. Cryptic diversity begets challenges and opportunities in biodiversity research. Integr Zool 2024. [PMID: 38263700 DOI: 10.1111/1749-4877.12809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
How many species of life are there on Earth? This is a question that we want to know but cannot yet answer. Some scholars speculate that the number of species may reach 2.2 billion when considering cryptic diversity and that each morphology-based insect species may contain an average of 3.1 cryptic species. With nearly two million described species, such high estimates of cryptic diversity would suggest that cryptic species are widespread. The development of molecular species delimitation has led to the discovery of a large number of cryptic species, and cryptic biodiversity has gradually entered our field of vision and attracted more attention. This paper introduces the concept of cryptic species, how they evolve, and methods by which they may be discovered and confirmed, and provides theoretical and methodological guidance for the study of hidden species. A workflow of how to confirm cryptic species is provided. In addition, the importance and reliability of multi-evidence-based integrated taxonomy are reaffirmed as a way to better standardize decision-making processes. Special focus on cryptic diversity and increased funding for taxonomy is needed to ensure that cryptic species in hyperdiverse groups are discoverable and described. An increased focus on cryptic species in the future will naturally arise as more difficult groups are studied, and thereby, we may finally better understand the rules governing the evolution and maintenance of cryptic biodiversity.
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Affiliation(s)
- Rui Cheng
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Arong Luo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Entomologie, Staatliches Museum für Naturkunde Stuttgart, Stuttgart, Germany
| | - Deyan Ge
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Zhong'e Hou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yanhua Qu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Baocheng Guo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Feng Zhang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Zhongli Sha
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Zhe Zhao
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Mingqiang Wang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
| | - Xiaoyu Shi
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Hongxiang Han
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qingsong Zhou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yuanning Li
- Institute of Oceanography, Shandong University, Qingdao, China
| | - Xingyue Liu
- Department of Entomology, China Agricultural University, Beijing, China
| | - Chen Shao
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Aibing Zhang
- College of Life Science, Capital Normal University, Beijing, China
| | - Xin Zhou
- Department of Entomology, China Agricultural University, Beijing, China
| | - Chaodong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- State Key Laboratory of Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences/International College, University of Chinese Academy of Sciences, Beijing, China
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4
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Shi X, Ma C, Gustave W, Orr M, Sritongchuay T, Yuan Z, Wang M, Zhang X, Zhou Q, Huang Y, Luo A, Zhu C. Effects of arsenic and selenium pollution on wild bee communities in the agricultural landscapes. Sci Total Environ 2024; 907:168052. [PMID: 37898201 DOI: 10.1016/j.scitotenv.2023.168052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 10/30/2023]
Abstract
Wild bees play crucial roles in pollinating numerous crops and fruits worldwide. However, these essential insect pollinators are threatened with decline due to a variety of stressors. Among stressors, relatively little work has been done on metalloid pollution. Laboratory experiments have shown that arsenic (As) and selenium (Se) can negatively impact on bees, it is unknown if these effects translate in real-world environments. To address this knowledge gap, wild bee communities were sampled from 18 smallholder farmlands in Kaihua County in Quzhou, Southeast China and As and Se concentrations in three bee species were measured (Xylocopa tranquebarorum, Eucera floralia, and Apis cerana). Analyses revealed that the large carpenter bee, X. tranquebarorum, exhibited significantly lower As and Se concentrations than the other two wild bee species. No significant correlations were found between As and Se concentrations in all three wild bee species. Interestingly, the proportion of semi-natural habitat was found to be significantly related to reduced Se concentration in wild bee bodies, though no such effect was observed for As. As pollution negatively impacted bee diversity but not abundance, whereas Se significantly impacted neither bee diversity nor abundance. Furthermore, both As and Se pollution had no significant effect on the abundance of small-bodied wild bees. Given the essential role of wild bees for pollination services, monitoring of As and Se pollution in wild bee bodies and their food resources (pollen and nectar) is recommended across agricultural and other potentially impacted systems.
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Affiliation(s)
- Xiaoyu Shi
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Changsheng Ma
- Longping Branch Graduate School, College of Biology, Hunan University, Changsha 410125, China
| | - Williamson Gustave
- School of Chemistry, Environmental & Life Sciences, University of the Bahamas, New Providence, Nassau, P.O. Box N-4912, Bahamas
| | - Michael Orr
- Entomologie, Staatliches Museum für Naturkunde Stuttgart, Stuttgart, Germany
| | - Tuanjit Sritongchuay
- Department of Computational Landscape Ecology, Helmholtz Centre for Environmental Research-UFZ Leipzig, Leipzig, Germany; Nature Conservation and Landscape Ecology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | - Zhaofeng Yuan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Mei Wang
- Eurofins Technology Service (Suzhou) Co., Ltd., China
| | - Xiaokai Zhang
- Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Qingsong Zhou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yixin Huang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China
| | - Arong Luo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; College of Life Sciences/International College, University of Chinese Academy of Sciences, Beijing, China.
| | - Chaodong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; College of Life Sciences/International College, University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
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5
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Jarrell ZR, Lee CM, Kim KH, He X, Smith MR, Raha JR, Bhatnagar N, Orr M, Kang SM, Chen Y, Jones DP, Go YM. Metabolic reprograming and increased inflammation by cadmium exposure following early-life respiratory syncytial virus infection-the involvement of protein S-palmitoylation. Toxicol Sci 2023; 197:kfad112. [PMID: 37941452 PMCID: PMC10823773 DOI: 10.1093/toxsci/kfad112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023] Open
Abstract
Early-life respiratory syncytial virus (RSV) infection (eRSV) is one of the leading causes of serious pulmonary disease in children. eRSV is associated with higher risk of developing asthma and compromised lung function later in life. Cadmium (Cd) is a toxic metal, widely present in the environment and in food. We recently showed that eRSV re-programs metabolism and potentiates Cd toxicity in the lung, and our transcriptome-metabolome-wide study showed strong associations between S-palmitoyl transferase expression and Cd-stimulated lung inflammation and fibrosis signaling. Limited information is available on the mechanism by which eRSV re-programs metabolism and potentiates Cd toxicity in the lung. In the current study, we used a mouse model to examine the role of protein S-palmitoylation (Pr-S-Pal) in low dose Cd-elevated lung metabolic disruption and inflammation following eRSV. Mice exposed to eRSV were later treated with Cd (3.3 mg CdCl2/L) in drinking water for 6 weeks (RSV+Cd). The role of Pr-S-Pal was studied using a palmitoyl transferase inhibitor, 2-bromopalmitate (BP, 10 µM). Inflammatory marker analysis showed that cytokines, chemokines and inflammatory cells were highest in the RSV+Cd group, and BP decreased inflammatory markers. Lung metabolomics analysis showed that pathways including phenylalanine, tyrosine and tryptophan, phosphatidylinositol and sphingolipid were altered across treatments. BP antagonized metabolic disruption of sphingolipid and glycosaminoglycan metabolism by RSV+Cd, consistent with BP effect on inflammatory markers. This study shows that Cd exposure following eRSV has a significant impact on subsequent inflammatory response and lung metabolism, which is mediated by Pr-S-Pal, and warrants future research for a therapeutic target.
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Affiliation(s)
- Zachery R Jarrell
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
| | - Choon-Myung Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
| | - Ki-Hye Kim
- Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, Georgia 30303, USA
| | - Xiaojia He
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
| | - Matthew R Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
- Atlanta Veterans Affairs Medical Center, Decatur, Georgia 30033, USA
| | - Jannatul R Raha
- Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, Georgia 30303, USA
| | - Noopur Bhatnagar
- Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, Georgia 30303, USA
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
| | - Sang-Moo Kang
- Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, Georgia 30303, USA
| | - Yan Chen
- Department of Ophthalmology, Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
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Cosman T, Finless A, Rideout AL, Lingley-Pottie P, Palmer LD, Shugar A, McDonald-McGinn DM, Swillen A, McGrath PJ, Bassett AS, Cytrynbaum C, Orr M, Meier S. An online survey to understand the needs of caregivers of family members with 22q11 deletion syndrome. J Intellect Disabil Res 2023; 67:860-868. [PMID: 37449408 DOI: 10.1111/jir.13061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 03/29/2023] [Accepted: 05/24/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Most individuals with 22q11.2 deletion syndrome (22q11DS) have multi-system and lifelong needs requiring substantial support. Their primary caregivers are usually family members who dedicate lifelong time and effort to their role. The pressures of their roles can negatively impact caregivers' psychosocial well-being, suggesting a need for additional support for this community who currently have no specialised interventions available. METHOD This online study surveyed 103 caregivers of family members with 22q11DS to determine the barriers to accessing support that they faced, the kind of support they would value and whether an online intervention could meet their needs. RESULTS The caregivers indicated that a brief online intervention focused on teaching practical skills and connecting them with a peer network of support would be most valuable. CONCLUSIONS Future studies are planned that will build on these results by designing and testing online interventions tailored to this community.
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Affiliation(s)
- T Cosman
- Department of Psychology/Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - A Finless
- Department of Psychology/Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
| | - A L Rideout
- Maritime Medical Genetics Service, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - P Lingley-Pottie
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
| | - L D Palmer
- Dalgish Family 22q Clinic, Department of Psychiatry, Division of Cardiology Department of Medicine, Toronto General Hospital Research Institute, University Health Network, Clinical Genetics Research Program, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - A Shugar
- Division of Clinical and Metabolic Genetics and the Department of Genetic Counselling, the Hospital for Sick Children, Department of Molecular Genetics, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - D M McDonald-McGinn
- Division of Human Genetics, 22q and You Center, Clinical Genetics Center, and Section of Genetic Counselling, Children's Hospital of Philadelphia, Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A Swillen
- Center for Human Genetics, UZ Leuven, Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - P J McGrath
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Psychiatry and Specific Care Clinics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - A S Bassett
- Dalgish Family 22q Clinic, Department of Psychiatry, Division of Cardiology Department of Medicine, Toronto General Hospital Research Institute, University Health Network, Clinical Genetics Research Program, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Psychiatry and Division of Cardiology Department of Medicine, and Toronto General Hospital Research Institute, University Health Network; Clinical Genetics Research Program and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - C Cytrynbaum
- Division of Clinical and Metabolic Genetics and the Department of Genetic Counselling, the Hospital for Sick Children, Department of Molecular Genetics, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - M Orr
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
| | - S Meier
- Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Psychiatry and Specific Care Clinics, IWK Health Centre, Halifax, Nova Scotia, Canada
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7
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Self WH, DeClercq J, Orr M. Renin-Angiotensin System Modulation in Adults With COVID-19-Reply. JAMA 2023; 330:664-665. [PMID: 37581675 DOI: 10.1001/jama.2023.10786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Affiliation(s)
- Wesley H Self
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Josh DeClercq
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Michael Orr
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
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8
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He X, Jarrell ZR, Smith MR, Ly VT, Hu X, Sueblinvong V, Liang Y, Orr M, Go YM, Jones DP. Low-dose vanadium pentoxide perturbed lung metabolism associated with inflammation and fibrosis signaling in male animal and in vitro models. Am J Physiol Lung Cell Mol Physiol 2023; 325:L215-L232. [PMID: 37310758 PMCID: PMC10396228 DOI: 10.1152/ajplung.00303.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/14/2023] Open
Abstract
Vanadium is available as a dietary supplement and also is known to be toxic if inhaled, yet little information is available concerning the effects of vanadium on mammalian metabolism when concentrations found in food and water. Vanadium pentoxide (V+5) is representative of the most common dietary and environmental exposures, and prior research shows that low-dose V+5 exposure causes oxidative stress measured by glutathione oxidation and protein S-glutathionylation. We examined the metabolic impact of V+5 at relevant dietary and environmental doses (0.01, 0.1, and 1 ppm for 24 h) in human lung fibroblasts (HLFs) and male C57BL/6J mice (0.02, 0.2, and 2 ppm in drinking water for 7 mo). Untargeted metabolomics using liquid chromatography-high-resolution mass spectrometry (LC-HRMS) showed that V+5 induced significant metabolic perturbations in both HLF cells and mouse lungs. We noted 30% of the significantly altered pathways in HLF cells, including pyrimidines and aminosugars, fatty acids, mitochondrial and redox pathways, showed similar dose-dependent patterns in mouse lung tissues. Alterations in lipid metabolism included leukotrienes and prostaglandins involved in inflammatory signaling, which have been associated with the pathogenesis of idiopathic pulmonary fibrosis (IPF) and other disease processes. Elevated hydroxyproline levels and excessive collagen deposition were also present in lungs from V+5-treated mice. Taken together, these results show that oxidative stress from environmental V+5, ingested at low levels, could alter metabolism to contribute to common human lung diseases.NEW & NOTEWORTHY We used relevant dietary and environmental doses of Vanadium pentoxide (V+5) to examine its metabolic impact in vitro and in vivo. Using liquid chromatography-high-resolution mass spectrometry (LC-HRMS), we found significant metabolic perturbations, with similar dose-dependent patterns observed in human lung fibroblasts and male mouse lungs. Alterations in lipid metabolism included inflammatory signaling, elevated hydroxyproline levels, and excessive collagen deposition were present in V+5-treated lungs. Our findings suggest that low levels of V+5 could trigger pulmonary fibrotic signaling.
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Affiliation(s)
- Xiaojia He
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Matthew Ryan Smith
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
- Atlanta Department of Veterans Affairs Healthcare System, Decatur, Georgia, United States
| | - ViLinh Thi Ly
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Xin Hu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Viranuj Sueblinvong
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Yongliang Liang
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia, United States
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9
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Self WH, Shotwell MS, Gibbs KW, de Wit M, Files DC, Harkins M, Hudock KM, Merck LH, Moskowitz A, Apodaca KD, Barksdale A, Safdar B, Javaheri A, Sturek JM, Schrager H, Iovine N, Tiffany B, Douglas IS, Levitt J, Busse LW, Ginde AA, Brown SM, Hager DN, Boyle K, Duggal A, Khan A, Lanspa M, Chen P, Puskarich M, Vonderhaar D, Venkateshaiah L, Gentile N, Rosenberg Y, Troendle J, Bistran-Hall AJ, DeClercq J, Lavieri R, Joly MM, Orr M, Pulley J, Rice TW, Schildcrout JS, Semler MW, Wang L, Bernard GR, Collins SP. Renin-Angiotensin System Modulation With Synthetic Angiotensin (1-7) and Angiotensin II Type 1 Receptor-Biased Ligand in Adults With COVID-19: Two Randomized Clinical Trials. JAMA 2023; 329:1170-1182. [PMID: 37039791 PMCID: PMC10091180 DOI: 10.1001/jama.2023.3546] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/24/2023] [Indexed: 04/12/2023]
Abstract
Importance Preclinical models suggest dysregulation of the renin-angiotensin system (RAS) caused by SARS-CoV-2 infection may increase the relative activity of angiotensin II compared with angiotensin (1-7) and may be an important contributor to COVID-19 pathophysiology. Objective To evaluate the efficacy and safety of RAS modulation using 2 investigational RAS agents, TXA-127 (synthetic angiotensin [1-7]) and TRV-027 (an angiotensin II type 1 receptor-biased ligand), that are hypothesized to potentiate the action of angiotensin (1-7) and mitigate the action of the angiotensin II. Design, Setting, and Participants Two randomized clinical trials including adults hospitalized with acute COVID-19 and new-onset hypoxemia were conducted at 35 sites in the US between July 22, 2021, and April 20, 2022; last follow-up visit: July 26, 2022. Interventions A 0.5-mg/kg intravenous infusion of TXA-127 once daily for 5 days or placebo. A 12-mg/h continuous intravenous infusion of TRV-027 for 5 days or placebo. Main Outcomes and Measures The primary outcome was oxygen-free days, an ordinal outcome that classifies a patient's status at day 28 based on mortality and duration of supplemental oxygen use; an adjusted odds ratio (OR) greater than 1.0 indicated superiority of the RAS agent vs placebo. A key secondary outcome was 28-day all-cause mortality. Safety outcomes included allergic reaction, new kidney replacement therapy, and hypotension. Results Both trials met prespecified early stopping criteria for a low probability of efficacy. Of 343 patients in the TXA-127 trial (226 [65.9%] aged 31-64 years, 200 [58.3%] men, 225 [65.6%] White, and 274 [79.9%] not Hispanic), 170 received TXA-127 and 173 received placebo. Of 290 patients in the TRV-027 trial (199 [68.6%] aged 31-64 years, 168 [57.9%] men, 195 [67.2%] White, and 225 [77.6%] not Hispanic), 145 received TRV-027 and 145 received placebo. Compared with placebo, both TXA-127 (unadjusted mean difference, -2.3 [95% CrI, -4.8 to 0.2]; adjusted OR, 0.88 [95% CrI, 0.59 to 1.30]) and TRV-027 (unadjusted mean difference, -2.4 [95% CrI, -5.1 to 0.3]; adjusted OR, 0.74 [95% CrI, 0.48 to 1.13]) resulted in no difference in oxygen-free days. In the TXA-127 trial, 28-day all-cause mortality occurred in 22 of 163 patients (13.5%) in the TXA-127 group vs 22 of 166 patients (13.3%) in the placebo group (adjusted OR, 0.83 [95% CrI, 0.41 to 1.66]). In the TRV-027 trial, 28-day all-cause mortality occurred in 29 of 141 patients (20.6%) in the TRV-027 group vs 18 of 140 patients (12.9%) in the placebo group (adjusted OR, 1.52 [95% CrI, 0.75 to 3.08]). The frequency of the safety outcomes was similar with either TXA-127 or TRV-027 vs placebo. Conclusions and Relevance In adults with severe COVID-19, RAS modulation (TXA-127 or TRV-027) did not improve oxygen-free days vs placebo. These results do not support the hypotheses that pharmacological interventions that selectively block the angiotensin II type 1 receptor or increase angiotensin (1-7) improve outcomes for patients with severe COVID-19. Trial Registration ClinicalTrials.gov Identifier: NCT04924660.
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Affiliation(s)
- Wesley H. Self
- Vanderbilt Institute for Clinical and Translational Research, Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Matthew S. Shotwell
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kevin W. Gibbs
- Department of Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Marjolein de Wit
- Department of Medicine, Virginia Commonwealth University, Richmond
| | - D. Clark Files
- Department of Medicine, Wake Forest University, Winston-Salem, North Carolina
| | - Michelle Harkins
- Department of Internal Medicine, University of New Mexico, Albuquerque
| | | | - Lisa H. Merck
- Department of Emergency Medicine, Virginia Commonwealth University Health System, Richmond
| | - Ari Moskowitz
- Department of Medicine, Montefiore Medical Center, Bronx, New York
| | | | - Aaron Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha
| | - Basmah Safdar
- Department of Emergency Medicine, Yale University, New Haven, Connecticut
| | - Ali Javaheri
- Department of Medicine, Washington University, St Louis, Missouri
| | | | - Harry Schrager
- Department of Medicine, Tufts School of Medicine, Newton-Wellesley Hospital, Newton, Massachusetts
| | - Nicole Iovine
- Department of Medicine, University of Florida, Gainesville
| | | | - Ivor S. Douglas
- Department of Medicine, Denver Health Medical Center, Denver, Colorado
| | - Joseph Levitt
- Department of Medicine, Stanford University, Stanford, California
| | | | - Adit A. Ginde
- Department of Emergency Medicine, School of Medicine, University of Colorado, Aurora
| | - Samuel M. Brown
- Department of Pulmonary/Critical Care Medicine, Intermountain Medical Center, Murray, Utah
| | - David N. Hager
- Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Katherine Boyle
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Abhijit Duggal
- Department of Medicine, Cleveland Clinic Foundation, Cleveland, Ohio
| | - Akram Khan
- Department of Medicine, Oregon Health & Science University, Portland
| | - Michael Lanspa
- Department of Pulmonary/Critical Care Medicine, Intermountain Medical Center, Murray, Utah
| | - Peter Chen
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Michael Puskarich
- Department of Emergency Medicine, University of Minnesota, Minneapolis
| | - Derek Vonderhaar
- Department of Medicine, Ochsner Medical Center, New Orleans, Louisiana
| | | | - Nina Gentile
- Department of Emergency Medicine, Temple University, Philadelphia, Pennsylvania
| | - Yves Rosenberg
- National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | - James Troendle
- National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | - Amanda J. Bistran-Hall
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Josh DeClercq
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Robert Lavieri
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Meghan Morrison Joly
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Michael Orr
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jill Pulley
- Vanderbilt Institute for Clinical and Translational Research, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Todd W. Rice
- Vanderbilt Institute for Clinical and Translational Research, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | | | - Matthew W. Semler
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Li Wang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Gordon R. Bernard
- Vanderbilt Institute for Clinical and Translational Research, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Sean P. Collins
- Vanderbilt Institute for Clinical and Translational Research, Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Geriatric Research, Education, and Clinical Center, Veterans Affairs Tennessee Valley Healthcare System, Nashville
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Shi XY, Orr M, Luo A, Wang MQ, Guo P, Zhou QS, Niu Z, Qiao H, Zou Y, Zhu CD. Optimizing low-cost sampling of pollinator insects in oilseed rape fields. Front Sustain Food Syst 2023. [DOI: 10.3389/fsufs.2023.1155458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Insects are key pollinators to ecosystem function, but much work remains to determine the most cost-effective, reliable scheme to monitor them. Pan traps (PT) and flight interception traps (FIT) are two of the most popular insect sampling methods used. However, their relative sampling performance and cost is poorly known for agroecosystems in China. We conducted a study across 18 oilseed rape fields in smallholder farmland in Zhejiang, China using these two traps. Our results showed that a single FIT had a greater sampling efficiency (more individuals and higher species richness) than a single PT, but controlling for cost, four PTs (the cost for four PTs is close to one FIT) showed a greater sampling efficiency than FITs. PTs collected more small-bodied individuals while FITs and PTs did not significantly differ in terms of monitoring pollinator insects with large body size. When exploring whether semi-natural habitat embedded in the agricultural landscape affected these results, results from both trap types shows that semi-natural habitat had a significant positive impact on wild pollinator diversity and rarefied species richness. Future studies that examine the effects of agricultural landscape on the wild pollinator community should combine PTs with netting or other active methods for long-term wild pollinator monitoring strategies.
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11
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Fernandes J, Uppal K, Liu KH, Hu X, Orr M, Tran V, Go YM, Jones DP. Antagonistic Interactions in Mitochondria ROS Signaling Responses to Manganese. Antioxidants (Basel) 2023; 12:antiox12040804. [PMID: 37107179 PMCID: PMC10134992 DOI: 10.3390/antiox12040804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023] Open
Abstract
Antagonistic interaction refers to opposing beneficial and adverse signaling by a single agent. Understanding opposing signaling is important because pathologic outcomes can result from adverse causative agents or the failure of beneficial mechanisms. To test for opposing responses at a systems level, we used a transcriptome–metabolome-wide association study (TMWAS) with the rationale that metabolite changes provide a phenotypic readout of gene expression, and gene expression provides a phenotypic readout of signaling metabolites. We incorporated measures of mitochondrial oxidative stress (mtOx) and oxygen consumption rate (mtOCR) with TMWAS of cells with varied manganese (Mn) concentration and found that adverse neuroinflammatory signaling and fatty acid metabolism were connected to mtOx, while beneficial ion transport and neurotransmitter metabolism were connected to mtOCR. Each community contained opposing transcriptome–metabolome interactions, which were linked to biologic functions. The results show that antagonistic interaction is a generalized cell systems response to mitochondrial ROS signaling.
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12
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Smith MR, Hu X, Jarrell ZR, He X, Orr M, Fernandes J, Chandler JD, Walker DI, Esper A, Marts L, Neujahr DC, Jones DP, Go YM. Study on the Relationship between Selenium and Cadmium in Diseased Human Lungs. Advances in Redox Research 2023; 7. [PMID: 37034445 PMCID: PMC10078579 DOI: 10.1016/j.arres.2023.100065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Cadmium (Cd) is a toxic environmental metal that interacts with selenium (Se) and contributes to many lung diseases. Humans have widespread exposures to Cd through diet and cigarette smoking, and studies in rodent models show that Se can protect against Cd toxicities. We sought to identify whether an antagonistic relationship existed between Se and Cd burdens and determine whether this relationship may associate with metabolic variation within human lungs. We performed metabolomics of 31 human lungs, including 25 with end-stage lung disease due to idiopathic pulmonary fibrosis, cystic fibrosis, chronic obstructive lung disease (COPD)/emphysema and other causes, and 6 non-diseased lungs. Results showed pathway associations with Cd including amino acid, lipid and energy-related pathways. Metabolic pathways varying with Se had considerable overlap with these pathways. Hierarchical cluster analysis (HCA) of individuals according to metabolites associated with Cd showed partial separation of disease types, with COPD/emphysema in the cluster with highest Cd, and non-diseased lungs in the cluster with the lowest Cd. When compared to HCA of metabolites associated with Se, the results showed that the cluster containing COPD/emphysema had the lowest Se, and the non-diseased lungs had the highest Se. A greater number of pathway associations occurred for Cd to Se ratio than either Cd or Se alone, indicating that metabolic patterns were more dependent on Cd to Se ratio than on either alone. Network analysis of interactions of Cd and Se showed network centrality was associated with pathways linked to polyunsaturated fatty acids involved in inflammatory signaling. Overall, the data show that metabolic pathway responses in human lung vary with Cd and Se in a pattern suggesting that Se is antagonistic to Cd toxicity in humans.
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Affiliation(s)
- Matthew Ryan Smith
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA, USA
| | - Xin Hu
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Xiaojia He
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Jolyn Fernandes
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Joshua D. Chandler
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Department of Pediatrics, School of Medicine at Emory University, Atlanta, GA, USA
| | - Douglas I. Walker
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Annette Esper
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Lucian Marts
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - David C. Neujahr
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
| | - Dean P. Jones
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Corresponding authors at: Whitehead Biomedical Research Building, 615 Michael St, Room 225, Atlanta, GA, 30322, USA. (D.P. Jones), (Y.-M. Go)
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine at Emory University, Atlanta, GA, USA
- Corresponding authors at: Whitehead Biomedical Research Building, 615 Michael St, Room 225, Atlanta, GA, 30322, USA. (D.P. Jones), (Y.-M. Go)
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13
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He X, Jarrell ZR, Smith MR, Ly VT, Liang Y, Orr M, Go YM, Jones DP. Metabolomics of V 2O 5 nanoparticles and V 2O 5 nanofibers in human airway epithelial BEAS-2B cells. Toxicol Appl Pharmacol 2023; 459:116327. [PMID: 36460058 PMCID: PMC9986994 DOI: 10.1016/j.taap.2022.116327] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022]
Abstract
Vanadium is a toxic metal listed by the IARC as possibly carcinogenic to humans. Manufactured nanosize vanadium pentoxide (V2O5) materials are used in a wide range of industrial sectors and recently have been developed as nanomedicine for cancer therapeutics, yet limited information is available to evaluate relevant nanotoxicity. In this study we used high-resolution metabolomics to assess effects of two V2O5 nanomaterials, nanoparticles and nanofibers, at exposure levels (0.01, 0.1, and 1 ppm) that did not cause cell death (i.e., non-cytotoxic) in a human airway epithelial cell line, BEAS-2B. As prepared, V2O5 nanofiber exhibited a fibrous morphology, with a width approximately 63 ± 12 nm and length in average 420 ± 70 nm; whereas, V2O5 nanoparticles showed a typical particle morphology with a size 36 ± 2 nm. Both V2O5 nanoparticles and nanofibers had dose-response effects on aminosugar, amino acid, fatty acid, carnitine, niacin and nucleotide metabolism. Differential effects of the particles and fibers included dibasic acid, glycosphingolipid and glycerophospholipid pathway associations with V2O5 nanoparticles, and cholesterol and sialic acid metabolism associations with V2O5 nanofibers. Examination by transmission electron microscopy provided evidence for mitochondrial stress and increased lysosome fusion by both nanomaterials, and these data were supported by effects on mitochondrial membrane potential and lysosomal activity. The results showed that non-cytotoxic exposures to V2O5 nanomaterials impact major metabolic pathways previously associated with human lung diseases and suggest that toxico-metabolomics may be useful to evaluate health risks from V2O5 nanomaterials.
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Affiliation(s)
- Xiaojia He
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Matthew Ryan Smith
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA; Atlanta Department of Veterans Affairs Healthcare System, Decatur, GA, USA
| | - ViLinh Thi Ly
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Yongliang Liang
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA.
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, GA 30322, USA.
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14
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Qiu L, Dong J, Li X, Parey SH, Tan K, Orr M, Majeed A, Zhang X, Luo S, Zhou X, Zhu C, Ji T, Niu Q, Liu S, Zhou X. Defining honeybee subspecies in an evolutionary context warrants strategized conservation. Zool Res 2023; 44:483-493. [PMID: 36994538 DOI: 10.24272/j.issn.2095-8137.2022.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Despite the urgent need for conservation consideration, strategic action plans for the preservation of the Asian honeybee, Apis cerana Fabricius, 1793, remain lacking. Both the convergent and divergent adaptations of this widespread insect have led to confusing phenotypical traits and inconsistent infraspecific taxonomy. Unclear subspecies boundaries pose a significant challenge to honeybee conservation efforts, as it is difficult to effectively prioritize conservation targets without a clear understanding of subspecies identities. Here, we investigated genome variations in 362 worker bees representing almost all populations of mainland A. cerana to understand how evolution has shaped its population structure. Whole-genome single nucleotide polymorphisms (SNPs) based on nuclear sequences revealed eight putative subspecies, with all seven peripheral subspecies exhibiting mutually exclusive monophyly and distinct genetic divergence from the widespread central subspecies. Our results demonstrated that most classic morphological traits, including body size, were related to the climatic variables of the local habitats and did not reflect the true evolutionary history of the organism. Thus, such morphological traits were not suitable for subspecific delineation. Conversely, wing vein characters showed relative independence to the environment and supported the subspecies boundaries inferred from nuclear genomes. Mitochondrial phylogeny further indicated that the present subspecies structure was a result of multiple waves of population divergence from a common ancestor. Based on our findings, we propose that criteria for subspecies delineation should be based on evolutionary independence, trait distinction, and geographic isolation. We formally defined and described eight subspecies of mainland A. cerana. Elucidation of the evolutionary history and subspecies boundaries enables a customized conservation strategy for both widespread and endemic honeybee conservation units, guiding colony introduction and breeding.
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Affiliation(s)
- Lifei Qiu
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Jiangxing Dong
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Xingan Li
- Key Laboratory for Bee Genetics and Breeding, Jilin Provincial Institute of Apicultural Sciences, Jilin, Jilin 132108, China
| | - Sajad H Parey
- Department of Zoology, School of Biosciences and Biotechnology, Baba Ghulam Shah Badshah University, Rajouri (Jammu and Kashmir) 185234, India
| | - Ken Tan
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Xishuangbanna, Yunnan 650000, China
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Aquib Majeed
- Department of Zoology, School of Biosciences and Biotechnology, Baba Ghulam Shah Badshah University, Rajouri (Jammu and Kashmir) 185234, India
| | - Xue Zhang
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Shiqi Luo
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA
| | - Chaodong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ting Ji
- Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Qingsheng Niu
- Key Laboratory for Bee Genetics and Breeding, Jilin Provincial Institute of Apicultural Sciences, Jilin, Jilin 132108, China
| | - Shanlin Liu
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China. E-mail:
| | - Xin Zhou
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China. E-mail:
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15
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Lim K, Lee S, Orr M, Lee S. Harrison's rule corroborated for the body size of cleptoparasitic cuckoo bees (Hymenoptera: Apidae: Nomadinae) and their hosts. Sci Rep 2022; 12:10984. [PMID: 35768474 PMCID: PMC9243014 DOI: 10.1038/s41598-022-14938-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/15/2022] [Indexed: 11/12/2022] Open
Abstract
Harrison’s rule, that body size is positively correlated between parasites and hosts, has been reported in a range of taxa, but whether the rule is applicable to cleptoparasitic insects is poorly understood. Subfamily Nomadinae, the largest group of cleptoparasitic bees, usurp the nests of a variety of host bees. Within the subfamily, Nomada exploits the most diverse hosts, using at least ten genera from five families. Here, we reassess the phylogeny of Nomadinae, including the expanded sampling of the genus Nomada, to explore host shift fluctuations throughout their evolutionary history and test the applicability of Harrison’s rule for the subfamily. Our phylogenetic results are mostly congruent with previous investigations, but we infer the tribe Hexepeolini as a sister taxon to the tribe Nomadini. Additionally, the results reveal discrepancies with the traditional classifications of Nomada. Ancestral state reconstruction of host use indicates that, early in their evolution, parasites used closer relatives, before attacking less related groups later. Lastly, we confirm Harrison’s rule in Nomadinae, supporting that body size dynamics influence the host shifts of cleptoparasitic bees.
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Affiliation(s)
- Kayun Lim
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seunghyun Lee
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea.,Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 92 Box, No. 1 Beichen West Road, Chaoyang District, Beijing, 100101, People's Republic of China
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 92 Box, No. 1 Beichen West Road, Chaoyang District, Beijing, 100101, People's Republic of China
| | - Seunghwan Lee
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Republic of Korea. .,Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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16
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Lanner J, Dubos N, Geslin B, Leroy B, Hernández-Castellano C, Dubaić JB, Bortolotti L, Calafat JD, Ćetković A, Flaminio S, Le Féon V, Margalef-Marrase J, Orr M, Pachinger B, Ruzzier E, Smagghe G, Tuerlings T, Vereecken NJ, Meimberg H. On the road: Anthropogenic factors drive the invasion risk of a wild solitary bee species. Sci Total Environ 2022; 827:154246. [PMID: 35245544 DOI: 10.1016/j.scitotenv.2022.154246] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/20/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Complex biotic networks of invaders and their new environments pose immense challenges for researchers aiming to predict current and future occupancy of introduced species. This might be especially true for invasive bees, as they enter novel trophic interactions. Little attention has been paid to solitary, invasive wild bees, despite their increasing recognition as a potential global threat to biodiversity. Here, we present the first comprehensive species distribution modelling approach targeting the invasive bee Megachile sculpturalis, which is currently undergoing parallel range expansion in North America and Europe. While the species has largely colonised the most highly suitable areas of North America over the past decades, its invasion of Europe seems to be in its early stages. We showed that its current distribution is largely explained by anthropogenic factors, suggesting that its spread is facilitated by road and maritime traffic, largely beyond its intrinsic dispersal ability. Our results suggest that M. sculpturalis is likely to be negatively affected by future climate change in North America, while in Europe the potential suitable areas at-risk of invasion remain equally large. Based on our study, we emphasise the role of expert knowledge for evaluation of ecologically meaningful variables implemented and interpreted for species distribution modelling. We strongly recommend that the monitoring of this and other invasive pollinator species should be prioritised in areas identified as at-risk, alongside development of effective management strategies.
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Affiliation(s)
- Julia Lanner
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria.
| | - Nicolas Dubos
- Territoire Environnement Teledetection Information Spatiale (TETIS), University of Montpellier, INRAE, Montpellier, France
| | - Benoît Geslin
- IMBE, Aix Marseille Université, Avignon Université, CNRS, IRD, Marseille, France
| | - Boris Leroy
- Muséum National d'Histoire Naturelle, Lab. Biologie des Organismes et des Ecosystèmes Aquatiques, Dept. Adaptation du Vivant, France
| | | | - Jovana Bila Dubaić
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Laura Bortolotti
- CREA - Research Centre for Agriculture and Environment, Via di Saliceto 80, Bologna, Italy
| | - Joan Diaz Calafat
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, 230 53 Alnarp, Sweden
| | - Aleksandar Ćetković
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
| | - Simone Flaminio
- CREA - Research Centre for Agriculture and Environment, Via di Saliceto 80, Bologna, Italy
| | - Violette Le Féon
- Observatoire des Abeilles, 68 rue du Onze Novembre, 59148 Flines-lez-Raches, France
| | - Jordi Margalef-Marrase
- Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), Cerdanyola del Vallès 08193, Spain
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Bärbel Pachinger
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria
| | - Enrico Ruzzier
- World Biodiversity Association Onlus c/o Museo Civico di Storia Naturale, Lungadige Porta Vittoria 9, Verona, Italy; Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, viale dell' Università 16, 35020 Legnaro, Italy
| | - Guy Smagghe
- Laboratory of Agrozoology, Department of Plant and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Tina Tuerlings
- Laboratory of Agrozoology, Department of Plant and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent, Belgium
| | - Nicolas J Vereecken
- Agroecology Lab, Université libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/02, B-1050 Brussels, Belgium
| | - Harald Meimberg
- University of Natural Resources and Life Sciences, Department of Integrative Biology and Biodiversity Research; Institute of Integrative Conservation Research, Gregor Mendel Str., 33, 1080 Vienna, Austria
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17
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Costa CP, Okamoto N, Orr M, Yamanaka N, Woodard SH. Convergent Loss of Prothoracicotropic Hormone, A Canonical Regulator of Development, in Social Bee Evolution. Front Physiol 2022; 13:831928. [PMID: 35242055 PMCID: PMC8887954 DOI: 10.3389/fphys.2022.831928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/20/2022] [Indexed: 11/21/2022] Open
Abstract
The evolution of insect sociality has repeatedly involved changes in developmental events and their timing. Here, we propose the hypothesis that loss of a canonical regulator of moulting and metamorphosis, prothoracicotropic hormone (PTTH), and its receptor, Torso, is associated with the evolution of sociality in bees. Specifically, we posit that the increasing importance of social influences on early developmental timing in social bees has led to their decreased reliance on PTTH, which connects developmental timing with abiotic cues in solitary insects. At present, the evidence to support this hypothesis includes the absence of genes encoding PTTH and Torso from all fully-sequenced social bee genomes and its presence in all available genomes of solitary bees. Based on the bee phylogeny, the most parsimonious reconstruction of evolutionary events is that this hormone and its receptor have been lost multiple times, across independently social bee lineages. These gene losses shed light on possible molecular and cellular mechanisms that are associated with the evolution of social behavior in bees. We outline the available evidence for our hypothesis, and then contextualize it in light of what is known about developmental cues in social and solitary bees, and the multiple precedences of major developmental changes in social insects.
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Affiliation(s)
- Claudinéia P Costa
- Department of Entomology, University of California, Riverside, Riverside, CA, United States
| | - Naoki Okamoto
- Department of Entomology, University of California, Riverside, Riverside, CA, United States.,Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Japan
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Naoki Yamanaka
- Department of Entomology, University of California, Riverside, Riverside, CA, United States
| | - S Hollis Woodard
- Department of Entomology, University of California, Riverside, Riverside, CA, United States
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18
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Liu KH, Owens JA, Saeedi B, Cohen CE, Bellissimo MP, Naudin C, Darby T, Druzak S, Maner-Smith K, Orr M, Hu X, Fernandes J, Camacho MC, Hunter-Chang S, VanInsberghe D, Ma C, Ganesh T, Yeligar SM, Uppal K, Go YM, Alvarez JA, Vos MB, Ziegler TR, Woodworth MH, Kraft CS, Jones RM, Ortlund E, Neish AS, Jones DP. Microbial metabolite delta-valerobetaine is a diet-dependent obesogen. Nat Metab 2021; 3:1694-1705. [PMID: 34931082 PMCID: PMC8711632 DOI: 10.1038/s42255-021-00502-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 11/04/2021] [Indexed: 12/17/2022]
Abstract
Obesity and obesity-related metabolic disorders are linked to the intestinal microbiome. However, the causality of changes in the microbiome-host interaction affecting energy metabolism remains controversial. Here, we show the microbiome-derived metabolite δ-valerobetaine (VB) is a diet-dependent obesogen that is increased with phenotypic obesity and is correlated with visceral adipose tissue mass in humans. VB is absent in germ-free mice and their mitochondria but present in ex-germ-free conventionalized mice and their mitochondria. Mechanistic studies in vivo and in vitro show VB is produced by diverse bacterial species and inhibits mitochondrial fatty acid oxidation through decreasing cellular carnitine and mitochondrial long-chain acyl-coenzyme As. VB administration to germ-free and conventional mice increases visceral fat mass and exacerbates hepatic steatosis with a western diet but not control diet. Thus, VB provides a molecular target to understand and potentially manage microbiome-host symbiosis or dysbiosis in diet-dependent obesity.
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Affiliation(s)
- Ken H Liu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Joshua A Owens
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Bejan Saeedi
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Catherine E Cohen
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Moriah P Bellissimo
- Division of Endocrinology, Metabolism, and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Crystal Naudin
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Trevor Darby
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Samuel Druzak
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - Kristal Maner-Smith
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Xin Hu
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Jolyn Fernandes
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Mary Catherine Camacho
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Sarah Hunter-Chang
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - David VanInsberghe
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Chunyu Ma
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Samantha M Yeligar
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Atlanta Veterans Affairs Health Care System, Decatur, GA, USA
| | - Karan Uppal
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Jessica A Alvarez
- Division of Endocrinology, Metabolism, and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Miriam B Vos
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Thomas R Ziegler
- Division of Endocrinology, Metabolism, and Lipids, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Michael H Woodworth
- Division of Infectious Disease, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Colleen S Kraft
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Division of Infectious Disease, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Rheinallt M Jones
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Eric Ortlund
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - Andrew S Neish
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA.
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.
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19
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Garibaldi LA, Pérez-Méndez N, Cordeiro GD, Hughes A, Orr M, Alves-Dos-Santos I, Freitas BM, Freitas de Oliveira F, LeBuhn G, Bartomeus I, Aizen MA, Andrade PB, Blochtein B, Boscolo D, Drumond PM, Gaglianone MC, Gemmill-Herren B, Halinski R, Krug C, Maués MM, Piedade Kiill LH, Pinheiro M, Pires CSS, Viana BF. Negative impacts of dominance on bee communities: Does the influence of invasive honey bees differ from native bees? Ecology 2021; 102:e03526. [PMID: 34467526 DOI: 10.1002/ecy.3526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 11/09/2022]
Abstract
Invasive species can reach high abundances and dominate native environments. One of the most impressive examples of ecological invasions is the spread of the African subspecies of the honey bee throughout the Americas, starting from its introduction in a single locality in Brazil. The invasive honey bee is expected to more negatively impact bee community abundance and diversity than native dominant species, but this has not been tested previously. We developed a comprehensive and systematic bee sampling scheme, using a protocol deploying 11,520 pan traps across regions and crops for three years in Brazil. We found that invasive honey bees are now the single most dominant bee species. Such dominance has not only negative consequences for abundance and species richness of native bees but also for overall bee abundance (i.e., strong "numerical" effects of honey bees). Contrary to expectations, honey bees did not have stronger negative impacts than other native bees achieving similar levels of dominance (i.e., lack of negative "identity" effects of honey bees). These effects were markedly consistent across crop species, seasons and years, and were independent from land-use effects. Dominance could be a proxy of bee community degradation and more generally of the severity of ecological invasions.
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Affiliation(s)
- Lucas A Garibaldi
- Universidad Nacional de Río Negro, Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural, Mitre 630, San Carlos de Bariloche, Río Negro, 8400, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural, Mitre 630, San Carlos de Bariloche, Río Negro, 8400, Argentina
| | | | - Guaraci D Cordeiro
- Department of Biosciences, University of Salzburg, Kapitelgasse 4/6, Salzburg, 5020, Austria
| | - Alice Hughes
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Xishuangbanna, Yunnan, 666303, China
| | - Michael Orr
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, 100101, China
| | - Isabel Alves-Dos-Santos
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, trav. 14, n° 321, Cidade Universitária, São Paulo, 05508-090, Brazil
| | - Breno M Freitas
- Departamento de Zootecnia, Centro de Ciências Agrárias, Universidade Federal do Ceará, Laboratório de Abelhas, Campus do Pici - R. Cinco, 100 - Pres. Kennedy, Fortaleza, Ceará, 60455-970, Brazil
| | - Favízia Freitas de Oliveira
- Laboratório de Bionomia, Biogeografia e Sistemática de Insetos, Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, n° 668, Campus Universitário de Ondina, Salvador, Bahia, 40170-115, Brazil.,Instituto Nacional de Ciência e Tecnologia em Estudos Inter e Transdisciplinares em Ecologia e Evolução, 1154, R. Barão de Jeremoabo, 668 - Ondina, Salvador, Bahia, 40170-115, Brazil
| | - Gretchen LeBuhn
- San Francisco State University, 1600 Holloway Ave, San Francisco, California, 94132, USA
| | - Ignasi Bartomeus
- Estación Biológica de Doñana del Consejo Superior de Investigaciones Científicas, CSIC, Cartuja TA-10, Edificio I, C. Américo Vespucio, s/n, Sevilla, 41092, Spain
| | - Marcelo A Aizen
- Instituto de Investigaciones en Biodiversidad y Medio Ambiente, Universidad Nacional del Comahue-CONICET, Quintral 1250, San Carlos de Bariloche, Rio Negro, 8400, Argentina
| | - Patricia B Andrade
- Departamento de Zootecnia, Centro de Ciências Agrárias, Universidade Federal do Ceará, Laboratório de Abelhas, Campus do Pici - R. Cinco, 100 - Pres. Kennedy, Fortaleza, Ceará, 60455-970, Brazil
| | - Betina Blochtein
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681, Porto Alegre, Rio Grande do Sul, 90619-900, Brazil
| | - Danilo Boscolo
- Instituto Nacional de Ciência e Tecnologia em Estudos Inter e Transdisciplinares em Ecologia e Evolução, 1154, R. Barão de Jeremoabo, 668 - Ondina, Salvador, Bahia, 40170-115, Brazil.,Departamento de Biologia, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900 Vila Monte Alegre, Ribeirão Preto, São Paulo, 14040-900, Brazil
| | - Patricia M Drumond
- Embrapa Mid-North, Av. Duque de Caxias n 5650 Buenos Aires, Teresina, Piauí, C.P 001 - 64008-780, Brazil
| | - Maria Cristina Gaglianone
- Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000 - Parque California, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | | | - Rosana Halinski
- Escola Politécnica, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga, 6681 - Prédio 30 - Partenon, Porto Alegre, Rio Grande do Sul, 90619-900, Brazil
| | - Cristiane Krug
- Centro de Pesquisa Agroflorestal, Embrapa Amazônia Ocidental, Rodovia AM 010 Km 29 Estrada Manau/Itacoatiara, Manaus, Amazonas, 69010-970, Brazil
| | - Márcia Motta Maués
- Laboratório de Entomologia, Embrapa Amazônia Oriental, Trav. Dr. Enéas Pinheiro, s/n°, Bairro do Marco, Belém, Pará, 66095-100, Brazil
| | - Lucia H Piedade Kiill
- Embrapa Tropical Semi-Arid, Rodovia BR-428, Km 152, Zona Rural, Petrolina, Pernambuco, 56302-970, Brazil
| | - Mardiore Pinheiro
- Universidade Federal da Fronteira Sul, R. Major Antônio Cardoso 590, Cerro Largo, Rio Grande do Sul, 97900-000, Brazil
| | - Carmen S S Pires
- Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, PqEB, Av. W5 Norte (final), Brasília, Distrito Federal, 70770-917, Brazil
| | - Blandina Felipe Viana
- Instituto Nacional de Ciência e Tecnologia em Estudos Inter e Transdisciplinares em Ecologia e Evolução, 1154, R. Barão de Jeremoabo, 668 - Ondina, Salvador, Bahia, 40170-115, Brazil.,Instituto de Biologia, Universidade Federal da Bahia, 1154, R. Barão de Jeremoabo, 668 - Ondina, Salvador, Bahia, 40170-115, Brazil
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20
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Guo PF, Wang MQ, Orr M, Li Y, Chen JT, Zhou QS, Staab M, Fornoff F, Chen GH, Zhang NL, Klein AM, Zhu CD. Reprint of: Tree diversity promotes predatory wasps and parasitoids but not pollinator bees in a subtropical experimental forest. Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Guo PF, Wang MQ, Orr M, Li Y, Chen JT, Zhou QS, Staab M, Fornoff F, Chen GH, Zhang NL, Klein AM, Zhu CD. Tree diversity promotes predatory wasps and parasitoids but not pollinator bees in a subtropical experimental forest. Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Jarrell ZR, Smith MR, He X, Orr M, Jones DP, Go YM. Firsthand and Secondhand Exposure Levels of Maltol-Flavored Electronic Nicotine Delivery System Vapors Disrupt Amino Acid Metabolism. Toxicol Sci 2021; 182:70-81. [PMID: 34009373 DOI: 10.1093/toxsci/kfab051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Electronic nicotine delivery system (ENDS) use has become a popular, generally regarded as safe, alternative to tobacco use. The e-liquids used for ENDS vapor generation commonly contain flavoring agents, such as maltol, which have been subjected to little investigation of their effects on lung health from ENDS usage. In the present study, we examined the impacts of firsthand (3.9 mM) and secondhand (3.9 µM) exposure levels to maltol-flavored ENDS vapors on lung metabolism. Human lung bronchial epithelial cells were exposed to ENDS vapors using a robotic system for controlled generation and delivery of exposures, and the effects on metabolism were evaluated using high-resolution metabolomics. The results show that maltol in e-liquids impacts lung airway epithelial cell metabolism at both firsthand and secondhand exposure levels. The effects of maltol were most notably seen in amino acid metabolism while oxidative stress was observed with exposure to all ENDS vapors including e-liquids alone and maltol-contained e-liquids. Many effects of firsthand exposure were also observed with secondhand exposure, suggesting need for systematic investigation of both firsthand and secondhand effects of flavored ENDS vapors on lung metabolism and risk of lung disease.
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Affiliation(s)
- Zachery R Jarrell
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
| | - Matthew Ryan Smith
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
| | - Xiaojia He
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
| | - Michael Orr
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
| | - Dean P Jones
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
| | - Young-Mi Go
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Emory University, Atlanta, Georgia 30322
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23
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Smith MR, Jarrell ZR, Orr M, Liu KH, Go YM, Jones DP. Metabolome-wide association study of flavorant vanillin exposure in bronchial epithelial cells reveals disease-related perturbations in metabolism. Environ Int 2021; 147:106323. [PMID: 33360165 PMCID: PMC7856097 DOI: 10.1016/j.envint.2020.106323] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Electronic cigarettes (e-cig) are an increasingly popular alternative to traditional smoking but have been in use for too short of a period of time to fully understand health risks. Furthermore, associated health risks are difficult to evaluate because of a large range of flavoring agents and their combinations for use with e-cig. Many flavoring agents are generally regarded as safe but have limited studies for effects on lung. Vanillin, an aromatic aldehyde, is one of the most commonly used flavoring agents in e-cig. Vanillin is electrophilic and can be redox active, with chemical properties expected to interact within biologic systems. Because accumulating lung metabolomics studies have identified metabolic disruptions associated with idiopathic pulmonary fibrosis, asthma and acute respiratory distress syndrome, we used human bronchial epithelial cells (BEAS-2B) with high-resolution metabolomics analysis to determine whether these disease-associated pathways are impacted by vanillin over the range used in e-cig. A metabolome-wide association study showed that vanillin perturbed specific energy, amino acid, antioxidant and sphingolipid pathways previously associated with human disease. Analysis of a small publicly available human dataset showed associations with several of the same pathways. Because vanillin is a common and high-abundance flavorant in e-cig, these results show that vanillin has potential to be mechanistically important in lung diseases and warrants in vivo toxicity testing in the context of e-cig use.
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Affiliation(s)
- Matthew Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA
| | - Zachery R Jarrell
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA
| | - Ken H Liu
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA.
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA.
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24
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Jarrell ZR, Smith MR, Hu X, Orr M, Liu KH, Quyyumi AA, Jones DP, Go YM. Plasma acylcarnitine levels increase with healthy aging. Aging (Albany NY) 2020; 12:13555-13570. [PMID: 32554854 PMCID: PMC7377890 DOI: 10.18632/aging.103462] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/27/2020] [Indexed: 05/27/2023]
Abstract
Acylcarnitines transport fatty acids into mitochondria and are essential for β-oxidation and energy metabolism. Decreased mitochondrial activity results in increased plasma acylcarnitines, and increased acylcarnitines activate proinflammatory signaling and associate with age-related disease. Changes in acylcarnitines associated with healthy aging, however, are not well characterized. In the present study, we examined the associations of plasma acylcarnitines with age (range: 20-90) in 163 healthy, non-diseased individuals from the predictive medicine research cohort (NCT00336570) and tested for gender-specific differences. The results show that long-chain and very long-chain acylcarnitines increased with age, while many odd-chain acylcarnitines decreased with age. Gender-specific differences were observed for several acylcarnitines, e.g., eicosadienoylcarnitine varied with age in males, and hydroxystearoylcarnitine varied in females. Metabolome-wide association study (MWAS) of age-associated acylcarnitines with all untargeted metabolic features showed little overlap between genders. These results show that plasma concentrations of acylcarnitines vary with age and gender in individuals selected for criteria of health. Whether these variations reflect mitochondrial dysfunction with aging, mitochondrial reprogramming in response to chronic environmental exposures, early pre-disease change, or an adaptive response to healthy aging, is unclear. The results highlight a potential utility for untargeted metabolomics research to elucidate gender-specific mechanisms of aging and age-related disease.
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Affiliation(s)
- Zachery R. Jarrell
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - M. Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - Xin Hu
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - Ken H. Liu
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - Arshed A. Quyyumi
- Division of Cardiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Dean P. Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Atlanta, GA 30322, USA
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25
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Go YM, Smith M, Fernandes J, Orr M, Hu X, Jones D. Cadmium at Human Dietary Levels Disturbed Homeostasis of Nutritional Metals in Lung (P24-055-19). Curr Dev Nutr 2019. [DOI: 10.1093/cdn/nzz044.p24-055-19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objectives
Multiple metals are present in the human diet, with some being required as essential inorganic nutrients and all causing toxicity in excess or deficiency. Cadmium (Cd), a toxic heavy metal accumulates in human organs, kidney, liver and lung via food consumption. Our recent mouse studies showed that Cd decreased lung selenium level, and caused metabolic and transcriptomic disruption. However, little is known about the effects of Cd on nutritional metal distribution and subsequent impact on human health. In this study, we examined effects of oral Cd on distribution and interaction of nutritional metals in mouse lung.
Methods
C57BL/6 J mice were treated with Cd at low concentrations (0, 1, 3.3, 10 mg CdCl2/L) by drinking water for 16 weeks. Lungs were collected from mice and lung samples and isolated lung mitochondria were analyzed for 25 inorganic nutritional and toxic environmental metals by inductively coupled plasma mass spectrometry (ICP-MS). In addition, human lung samples from the Emory Transplant Program (Emory IRB 0,0006248) and from International Institute for Advancement of Medicine were analyzed for metals by ICP-MS.
Results
Lungs (n = 50) from mice exposed to Cd in a dose-response study showed that cobalt (Co), vanadium (V), copper (Cu) and molybdenum (Mo) were positively correlated with Cd [Spearman correlation (r); 0.38, 0.31, 0.42, 0.41, P < 0.05], and correlation of V and Cu to Cd were increased in lung mitochondria (r; 0.73, 0.87). The data for human lungs (n = 24) showed that Cd was positively correlated with Co, V and manganese (Mn), r; 0.43, 0.73 and 0.39, P < 0.05) in chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, emphysema, cystic fibrosis, and negatively correlated with magnesium (r = −0.46).
Conclusions
The results show that Co and V each had positive correlations with Cd in human and mouse lung studies, and interactions of metals with Cd were increased in lung mitochondria. Additionally, the results suggest interactions of Cd with Cu, Mo and Mn, which could impact the function of these essential nutrients. Given the range of toxic effects of Cd, the results indicate that studies are needed to understand potential dysfunctions related to disturbed homeostasis of nutritionally essential metals.
Funding Sources
NIEHS R01 ES023485 and NIEHS R21 ES025632.
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Hu X, Kim KH, Lee Y, Fernandes J, Smith MR, Jung YJ, Orr M, Kang SM, Jones DP, Go YM. Environmental Cadmium Enhances Lung Injury by Respiratory Syncytial Virus Infection. Am J Pathol 2019; 189:1513-1525. [PMID: 31108100 DOI: 10.1016/j.ajpath.2019.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 04/04/2019] [Accepted: 04/11/2019] [Indexed: 12/21/2022]
Abstract
Cadmium (Cd) is a naturally occurring environmental toxicant that disrupts mitochondrial function at occupational exposure levels. The impacts of Cd exposure at low levels through dietary intake remain largely uncharacterized. Human respiratory syncytial virus (RSV) causes severe morbidity, which can require hospitalization and result in death in young children and elderly populations. The impacts of environmental Cd exposure on the severity of RSV disease are unknown. Herein, we used a mouse model to examine whether Cd pre-exposure at a level of dietary intake potentiates pulmonary inflammation on subsequent infection with RSV. Mice were given Cd or saline in drinking water for 28 days. Subsets of these mice were infected with RSV at 5 days before the end of the study. Cd pre-exposure caused relatively subtle changes in lung; however, it elevated the IL-4 level and altered metabolites associated with fatty acid metabolism. After RSV infection, mice pre-exposed to Cd had elevated lung RSV titer and increased inflammation, as measured by histopathology, immune cell infiltration, cytokines, and chemokines. RSV infection after Cd pre-exposure also caused widespread perturbation in metabolism of glycerophospholipids and amino acids (Trp, Met, and Cys, branched-chain amino acids), as well as carnitine shuttle associated with mitochondrial energy metabolism. The results show that Cd burden by dietary intake potentiates RSV infection and severe disease with associated mitochondrial metabolic disruption.
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Affiliation(s)
- Xin Hu
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Ki-Hye Kim
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Youri Lee
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Jolyn Fernandes
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - M Ryan Smith
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Yu-Jin Jung
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Michael Orr
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Sang-Moo Kang
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Dean P Jones
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia.
| | - Young-Mi Go
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia.
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Rogers A, Bakhshaie J, Buckner J, Orr M, Paulus D, Ditre J, Zvolensky M. (177) Opioid and Cannabis Co-Use among Adults with Chronic Pain: Relations to Substance Misuse, Mental Health, and Pain Experience. The Journal of Pain 2019. [DOI: 10.1016/j.jpain.2019.01.097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Orr M, Bailey W, Richards K, Kopper T, Seifert A, Gensel J. African Spiny Mice as a Comparative Model of Spinal Cord Injury Repair and Recovery. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.727.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hu X, Chandler JD, Park S, Liu K, Fernandes J, Orr M, Smith MR, Ma C, Kang SM, Uppal K, Jones DP, Go YM. Low-dose cadmium disrupts mitochondrial citric acid cycle and lipid metabolism in mouse lung. Free Radic Biol Med 2019; 131:209-217. [PMID: 30529385 PMCID: PMC6331287 DOI: 10.1016/j.freeradbiomed.2018.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/30/2018] [Accepted: 12/05/2018] [Indexed: 12/12/2022]
Abstract
Cadmium (Cd) causes acute and chronic lung toxicities at occupational exposure levels, yet the impacts of Cd exposure at low levels through dietary intake remain largely uncharacterized. Health concerns arise because humans do not have an effective Cd elimination mechanism, resulting in a long (10- to 35-y) biological half-life. Previous studies showed increased mitochondrial oxidative stress and cell death by Cd yet the details of mitochondrial alterations by low levels of Cd remain unexplored. In the current study, we examined the impacts of Cd burden at a low environmental level on lung metabolome, redox proteome, and inflammation in mice given Cd at low levels by drinking water (0, 0.2, 0.6 and 2.0 mg Cd/L) for 16 weeks. The results showed that mice accumulated lung Cd comparable to non-smoking humans and showed inflammation in lung by histopathology at 2 mg Cd/L. The results of high resolution metabolomics combined with bioinformatics showed that mice treated with 2 mg Cd/L increased levels of lipids in the lung, accompanied by disruption in mitochondrial energy metabolism. In addition, targeted metabolomic analysis showed that these mice had increased accumulation of mitochondrial carnitine and citric acid cycle intermediates. The results of redox proteomics showed that Cd at 2 mg/L stimulated oxidation of isocitrate dehydrogenase, malate dehydrogenase and ATP synthase. Taken together, the results showed impaired mitochondrial function and accumulation of lipids in the lung with a Cd dose response relevant to non-smokers without occupational exposures. These findings suggest that dietary Cd intake could be an important variable contributing to human pulmonary disorders.
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Affiliation(s)
- Xin Hu
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Joshua D Chandler
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Soojin Park
- Georgia State University, Atlanta, GA, United States
| | - Ken Liu
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Jolyn Fernandes
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Michael Orr
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - M Ryan Smith
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Chunyu Ma
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Sang-Moo Kang
- Georgia State University, Atlanta, GA, United States
| | - Karan Uppal
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States
| | - Dean P Jones
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States.
| | - Young-Mi Go
- Division of Pulmonary Medicine, Department of Medicine, Emory University, United States.
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Wilson M, Finlay M, Orr M, Barbosa-Leiker C, Sherazi N, Roberts MLA, Layton M, Roll JM. Engagement in online pain self-management improves pain in adults on medication-assisted behavioral treatment for opioid use disorders. Addict Behav 2018; 86:130-137. [PMID: 29731244 DOI: 10.1016/j.addbeh.2018.04.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 04/03/2018] [Accepted: 04/25/2018] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Persistent pain has been recognized as an important motivator that can lead individuals to misuse opioids. New approaches are needed to test pain treatments that can improve outcomes for people with persistent pain in medication-assisted behavioral treatment for opioid use disorder. This study piloted an online pain self-management program to explore acceptability and treatment effects. METHODS A sample of 60 adults diagnosed with chronic non-cancer pain and receiving medication-assisted behavioral treatment at one of two clinics were randomized into either treatment group with access to an online pain management program or waitlist attention control. Participants received online surveys via email at baseline and post-treatment at week 8. RESULTS The majority of participants (n = 44; 73%) reported that their first use of opioids was in response to a painful event. Those who engaged in the online program had significantly lower pain interference, pain severity, opioid misuse measures, and depressive symptoms after eight weeks while pain self-efficacy was increased. CONCLUSION Our results suggest the online pain self-management program content may be helpful for managing physical and emotional symptoms experienced by individuals with co-occurring pain and opioid use disorders. To improve online engagement, more support is necessary to assist with technology access and completion of online activities.
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Liu YZ, Hodgson D, Locker G, Lai Z, Balcerzak D, Sharpe A, Barrett J, Orr M, Gutjahr T, Dougherty B, Roudier M, Shi X, Miller R, Kim W, Zeng X, Ochiai A, Im SA, Xu RH, Boku N, Bang YJ. Olaparib plus paclitaxel sensitivity in biomarker subgroups of gastric cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
- Ray Page
- University of Bath Science and Technology Education Centre
| | - Michael Orr
- University of Bath Science and Technology Education Centre
| | - Melanie Nash
- University of Bath Science and Technology Education Centre
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Fernandes J, Hao L, Bijli KM, Chandler JD, Orr M, Hu X, Jones DP, Go YM. From the Cover: Manganese Stimulates Mitochondrial H2O2 Production in SH-SY5Y Human Neuroblastoma Cells Over Physiologic as well as Toxicologic Range. Toxicol Sci 2016; 155:213-223. [PMID: 27701121 DOI: 10.1093/toxsci/kfw196] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Manganese (Mn) is an abundant redox-active metal with well-characterized mitochondrial accumulation and neurotoxicity due to excessive exposures. Mn is also an essential co-factor for the mitochondrial antioxidant protein, superoxide dismutase-2 (SOD2), and the range for adequate intake established by the Institute of Medicine Food and Nutrition Board is 20% of the interim guidance value for toxicity by the Agency for Toxic Substances and Disease Registry, leaving little margin for safety. To study toxic mechanisms over this critical dose range, we treated human neuroblastoma SH-SY5Y cells with a series of MnCl2 concentrations (from 0 to 100 μM) and measured cellular content to compare to human brain Mn content. Concentrations ≤10 μM gave cellular concentrations comparable to literature values for normal human brain, whereas concentrations ≥50 μM resulted in values comparable to brains from individuals with toxic Mn exposures. Cellular oxygen consumption rate increased as a function of Mn up to 10 μM and decreased with Mn dose ≥50 μM. Over this range, Mn had no effect on superoxide production as measured by aconitase activity or MitoSOX but increased H2O2 production as measured by MitoPY1. Consistent with increased production of H2O2, SOD2 activity, and steady-state oxidation of total thiol increased with increasing Mn. These findings have important implications for Mn toxicity by re-directing attention from superoxide anion radical to H2O2-dependent mechanisms and to investigation over the entire physiologic range to toxicologic range. Additionally, the results show that controlled Mn exposure provides a useful cell manipulation for toxicological studies of mitochondrial H2O2 signaling.
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Affiliation(s)
| | | | | | | | | | | | | | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322
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Chandler JD, Hu X, Ko EJ, Park S, Lee YT, Orr M, Fernandes J, Uppal K, Kang SM, Jones DP, Go YM. Metabolic pathways of lung inflammation revealed by high-resolution metabolomics (HRM) of H1N1 influenza virus infection in mice. Am J Physiol Regul Integr Comp Physiol 2016; 311:R906-R916. [PMID: 27558316 DOI: 10.1152/ajpregu.00298.2016] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 08/19/2016] [Indexed: 12/21/2022]
Abstract
Influenza is a significant health concern worldwide. Viral infection induces local and systemic activation of the immune system causing attendant changes in metabolism. High-resolution metabolomics (HRM) uses advanced mass spectrometry and computational methods to measure thousands of metabolites inclusive of most metabolic pathways. We used HRM to identify metabolic pathways and clusters of association related to inflammatory cytokines in lungs of mice with H1N1 influenza virus infection. Infected mice showed progressive weight loss, decreased lung function, and severe lung inflammation with elevated cytokines [interleukin (IL)-1β, IL-6, IL-10, tumor necrosis factor (TNF)-α, and interferon (IFN)-γ] and increased oxidative stress via cysteine oxidation. HRM showed prominent effects of influenza virus infection on tryptophan and other amino acids, and widespread effects on pathways including purines, pyrimidines, fatty acids, and glycerophospholipids. A metabolome-wide association study (MWAS) of the aforementioned inflammatory cytokines was used to determine the relationship of metabolic responses to inflammation during infection. This cytokine-MWAS (cMWAS) showed that metabolic associations consisted of distinct and shared clusters of 396 metabolites highly correlated with inflammatory cytokines. Strong negative associations of selected glycosphingolipid, linoleate, and tryptophan metabolites with IFN-γ contrasted strong positive associations of glycosphingolipid and bile acid metabolites with IL-1β, TNF-α, and IL-10. Anti-inflammatory cytokine IL-10 had strong positive associations with vitamin D, purine, and vitamin E metabolism. The detailed metabolic interactions with cytokines indicate that targeted metabolic interventions may be useful during life-threatening crises related to severe acute infection and inflammation.
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Affiliation(s)
- Joshua D Chandler
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | - Xin Hu
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | - Eun-Ju Ko
- Georgia State University, Atlanta, Georgia
| | | | | | - Michael Orr
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | - Jolyn Fernandes
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | - Karan Uppal
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | | | - Dean P Jones
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
| | - Young-Mi Go
- Division of Pulmonary Medicine, Department of Medicine, Emory University, Atlanta, Georgia; and
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Gopalan V, Orr M, Pillai S, Lam A. Expression and localization of GAEC1 oncogene in peripheral blood from patients with colorectal adenocarcinoma. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61108-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Crossin GT, Hatcher BG, Denny S, Whoriskey K, Orr M, Penney A, Whoriskey FG. Condition-dependent migratory behaviour of endangered Atlantic salmon smolts moving through an inland sea. Conserv Physiol 2016; 4:cow018. [PMID: 27293765 PMCID: PMC4877435 DOI: 10.1093/conphys/cow018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 04/18/2016] [Accepted: 04/23/2016] [Indexed: 05/20/2023]
Abstract
The Bras d'Or Lake watershed of Cape Breton Island, Nova Scotia, Canada is a unique inland sea ecosystem, UNESCO Biosphere Reserve and home to a group of regionally distinct Atlantic salmon (Salmo salar) populations. Recent population decreases in this region have raised concern about their long-term persistence. We used acoustic telemetry to track the migrations of juvenile salmon (smolts) from the Middle River into the Bras d'Or Lake and, subsequently, into the Atlantic Ocean. Roughly half of the tagged smolts transited the Bras d'Or Lakes to the Atlantic Ocean, using a migration route that took them through the Gulf of St Lawrence's northern exit at the Strait of Belle Isle (∼650 km from the home river) towards feeding areas in the Labrador Sea and Greenland. However, a significant fraction spent >70 days in the Lakes, suggesting that this population has an alternative resident form, in which smolts limit their migrations within the Bras d'Or. Smolts in good relative condition (as determined from length-to-mass relationships) tended to be residents, whereas fish in poorer condition were ocean migrants. We also found a covarying effect of river temperature that helped to predict residence vs. ocean migration. We discuss these results relative to their bioenergetic implications and provide suggestions for future studies aimed at the conservation of declining salmon populations in Canada.
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Affiliation(s)
- Glenn T Crossin
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Corresponding author: Department of Biology, Dalhousie University, P.O. Box 15000, Halifax, NS, Canada B3H 4R2. Tel: +1 (902) 494 4258.
| | - Bruce G Hatcher
- Bras d’Or Institute for Ecosystem Research, Cape Breton University, Sydney, Nova Scotia, Canada
| | - Shelley Denny
- Unima’ki Institute of Natural Resources, Eskasoni, Nova Scotia, Canada
| | - Kim Whoriskey
- Department of Mathematics and Statistics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michael Orr
- Bras d’Or Institute for Ecosystem Research, Cape Breton University, Sydney, Nova Scotia, Canada
| | - Alicia Penney
- Bras d’Or Institute for Ecosystem Research, Cape Breton University, Sydney, Nova Scotia, Canada
| | - Frederick G Whoriskey
- Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Ocean Tracking Network, Dalhousie University, Halifax, Nova Scotia, Canada
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Crossin GT, Hatcher BG, Denny S, Whoriskey K, Orr M, Penney A, Whoriskey FG. Erratum: Condition-dependent migratory behaviour of endangered Atlantic salmon smolts moving through an inland sea. Conserv Physiol 2016; 4:cow032. [PMID: 27766154 PMCID: PMC5069855 DOI: 10.1093/conphys/cow032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
[This corrects the article DOI: 10.1093/conphys/cow018.].
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Tovmasyan A, Sampaio RS, Boss MK, Bueno-Janice JC, Bader BH, Thomas M, Reboucas JS, Orr M, Chandler JD, Go YM, Jones DP, Venkatraman TN, Haberle S, Kyui N, Lascola CD, Dewhirst MW, Spasojevic I, Benov L, Batinic-Haberle I. Anticancer therapeutic potential of Mn porphyrin/ascorbate system. Free Radic Biol Med 2015; 89:1231-47. [PMID: 26496207 PMCID: PMC4684782 DOI: 10.1016/j.freeradbiomed.2015.10.416] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/05/2015] [Accepted: 10/18/2015] [Indexed: 01/12/2023]
Abstract
Ascorbate (Asc) as a single agent suppressed growth of several tumor cell lines in a mouse model. It has been tested in a Phase I Clinical Trial on pancreatic cancer patients where it exhibited no toxicity to normal tissue yet was of only marginal efficacy. The mechanism of its anticancer effect was attributed to the production of tumoricidal hydrogen peroxide (H2O2) during ascorbate oxidation catalyzed by endogenous metalloproteins. The amount of H2O2 could be maximized with exogenous catalyst that has optimized properties for such function and is localized within tumor. Herein we studied 14 Mn porphyrins (MnPs) which differ vastly with regards to their redox properties, charge, size/bulkiness and lipophilicity. Such properties affect the in vitro and in vivo ability of MnPs (i) to catalyze ascorbate oxidation resulting in the production of H2O2; (ii) to subsequently employ H2O2 in the catalysis of signaling proteins oxidations affecting cellular survival pathways; and (iii) to accumulate at site(s) of interest. The metal-centered reduction potential of MnPs studied, E1/2 of Mn(III)P/Mn(II)P redox couple, ranged from -200 to +350 mV vs NHE. Anionic and cationic, hydrophilic and lipophilic as well as short- and long-chained and bulky compounds were explored. Their ability to catalyze ascorbate oxidation, and in turn cytotoxic H2O2 production, was explored via spectrophotometric and electrochemical means. Bell-shape structure-activity relationship (SAR) was found between the initial rate for the catalysis of ascorbate oxidation, vo(Asc)ox and E1/2, identifying cationic Mn(III) N-substituted pyridylporphyrins with E1/2>0 mV vs NHE as efficient catalysts for ascorbate oxidation. The anticancer potential of MnPs/Asc system was subsequently tested in cellular (human MCF-7, MDA-MB-231 and mouse 4T1) and animal models of breast cancer. At the concentrations where ascorbate (1mM) and MnPs (1 or 5 µM) alone did not trigger any alteration in cell viability, combined treatment suppressed cell viability up to 95%. No toxicity was observed with normal human breast epithelial HBL-100 cells. Bell-shape relationship, essentially identical to vo(Asc)oxvs E1/2, was also demonstrated between MnP/Asc-controlled cytotoxicity and E1/2-controlled vo(Asc)ox. Magnetic resonance imaging studies were conducted to explore the impact of ascorbate on T1-relaxivity. The impact of MnP/Asc on intracellular thiols and on GSH/GSSG and Cys/CySS ratios in 4T1 cells was assessed and cellular reduction potentials were calculated. The data indicate a significant increase in cellular oxidative stress induced by MnP/Asc. Based on vo(Asc)oxvs E1/2 relationships and cellular toxicity, MnTE-2-PyP(5+) was identified as the best catalyst among MnPs studied. Asc and MnTE-2-PyP(5+) were thus tested in a 4T1 mammary mouse flank tumor model. The combination of ascorbate (4 g/kg) and MnTE-2-PyP(5+) (0.2mg/kg) showed significant suppression of tumor growth relative to either MnTE-2-PyP(5+) or ascorbate alone. About 7-fold higher accumulation of MnTE-2-PyP(5+) in tumor vs normal tissue was found to contribute largely to the anticancer effect.
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Affiliation(s)
- Artak Tovmasyan
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Romulo S Sampaio
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, United States; Departamento de Quimica, CCEN, Universidade Federal da Paraiba, Joao Pessoa, PB 58051-900, Brazil
| | - Mary-Keara Boss
- Department of Molecular Biomedical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC 27607, United States
| | - Jacqueline C Bueno-Janice
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, United States; Departamento de Quimica, CCEN, Universidade Federal da Paraiba, Joao Pessoa, PB 58051-900, Brazil
| | - Bader H Bader
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait
| | - Milini Thomas
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait
| | - Julio S Reboucas
- Departamento de Quimica, CCEN, Universidade Federal da Paraiba, Joao Pessoa, PB 58051-900, Brazil
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA, United States
| | - Joshua D Chandler
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA, United States
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA, United States
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA, United States
| | | | - Sinisa Haberle
- Department of Radiology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Natalia Kyui
- Canadian Economic Analysis Department, Bank of Canada, Ottawa, ON K1A 0G9, Canada
| | - Christopher D Lascola
- Department of Radiology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Mark W Dewhirst
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Ivan Spasojevic
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, United States; Duke Cancer Institute, Pharmaceutical Research Shared Resource, PK/PD Core laboratory, Durham NC 27710, United States
| | - Ludmil Benov
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait
| | - Ines Batinic-Haberle
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC 27710, United States.
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Timms K, Neff C, Morris B, Hodgson D, Orr M, Zhongwu L, Fielding A, Dougherty B, Spencer S, Robertson J, Barrett C, Gutin A, Lanchbury J. 466 Next generation sequencing of BRCA1 and BRCA2 genes in ovarian tumors captures all germline mutations and expands the potential treatment group for the PARP inhibitor olaparib. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30300-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hodgson D, Dougherty B, Lai Z, Grinsted L, Spencer S, O'Connor M, Ho T, Robertson J, Lanchbury J, Timms K, Gutin A, Orr M, Jones H, Gilks B, Womack C, Sun J, Yelensky R, Gourley C, Ledermann J, Barrett J. 435 Candidate biomarkers of PARP inhibitor sensitivity in ovarian cancer beyond the BRCA genes. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30269-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Go YM, Sutliff RL, Chandler JD, Khalidur R, Kang BY, Anania FA, Orr M, Hao L, Fowler BA, Jones DP. Low-Dose Cadmium Causes Metabolic and Genetic Dysregulation Associated With Fatty Liver Disease in Mice. Toxicol Sci 2015; 147:524-34. [PMID: 26187450 DOI: 10.1093/toxsci/kfv149] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Cadmium (Cd) is present in food at low levels and accumulates in humans throughout life because it is not effectively excreted. Cd from smoking or occupational exposure shows adverse effects on health, but the mechanistic effect of Cd at low dietary intake levels is poorly studied. Epidemiology studies found that nonalcoholic fatty liver disease (NAFLD), common in U.S. adults, is associated with Cd burden. In cell studies, we found that environmental low-dose Cd oxidized proteins and stimulated inflammatory signaling. However, little is known about low-dose Cd effects on liver function and associated metabolic pathways in vivo. We investigated effects of low-level Cd exposure on liver gene transcripts, metabolites, and associated metabolic pathways and function after challenging mice with Cd (10 mg/l) by drinking water. Results showed liver Cd in treated mice was similar to adult humans without occupational or smoking exposures and 10-fold higher than control mouse values. Pathway analysis of significantly altered liver genes and metabolites mapped to functional pathways of lipid metabolism, cell death and mitochondrial oxidative phosphorylation. These are well-recognized pathways associated with NAFLD. Cd-treated mice had higher liver enzymes in plasma and a trend toward fat accumulation in liver. To verify low-dose Cd-induced stimulation of cell death pathways, phosphorylation of c-Jun N-terminal kinase (JNK) was examined in cultured hepatic cells. Consistent with mouse liver data, low-dose Cd stimulated JNK activation. Together, the results show that low-dose Cd exposure causes liver function changes consistent with a role in NAFLD and possibly also nonalcoholic steatohepatitis.
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Affiliation(s)
- Young-Mi Go
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | - Roy L Sutliff
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | | | - Rahman Khalidur
- Digestive Diseases, Department of Medicine, Emory University, Atlanta, Georgia 30322
| | - Bum-Yong Kang
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | - Frank A Anania
- Digestive Diseases, Department of Medicine, Emory University, Atlanta, Georgia 30322
| | - Michael Orr
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | - Li Hao
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | - Bruce A Fowler
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
| | - Dean P Jones
- *Division of Pulmonary, Allergy and Critical Care Medicine, and
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Abstract
ABSTRACT:While learning and memory are related, they are distinct processes each with different forms of expression and underlying molecular mechanisms. An invertebrate model system, Lymnaea stagnalis, is used to study memory formation of a non-declarative memory. We have done so because: 1) We have discovered the neural circuit that mediates an interesting and tractable behaviour; 2) This behaviour can be operantly conditioned and intermediate-term and long-term memory can be demonstrated; and 3) It is possible to demonstrate that a single neuron in the model system is a necessary site of memory formation. This article reviews how Lymnaea has been used in the study of behavioural and molecular mechanisms underlying consolidation, reconsolidation, extinction and forgetting.
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Affiliation(s)
- Kashif Parvez
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Go YM, Kim CW, Walker DI, Kang DW, Kumar S, Orr M, Uppal K, Quyyumi AA, Jo H, Jones DP. Disturbed flow induces systemic changes in metabolites in mouse plasma: a metabolomics study using ApoE⁻/⁻ mice with partial carotid ligation. Am J Physiol Regul Integr Comp Physiol 2014; 308:R62-72. [PMID: 25377480 DOI: 10.1152/ajpregu.00278.2014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Disturbed blood flow (d-flow) occurring in branched and curved arteries promotes endothelial dysfunction and atherosclerosis, in part, by altering gene expression and epigenomic profiles in endothelial cells. While a systemic metabolic change is known to play a role in atherosclerosis, it is unclear whether it can be regulated by local d-flow. Here, we tested this hypothesis by carrying out a metabolomics study using blood plasma samples obtained from ApoE(-/-) mice that underwent a partial carotid ligation surgery to induce d-flow. Mice receiving sham ligation were used as a control. To study early metabolic changes, samples collected from 1 wk after partial ligation when endothelial dysfunction occurs, but before atheroma develops, were analyzed by high-resolution mass spectrometry. A metabolome-wide association study showed that 128 metabolites were significantly altered in the ligated mice compared with the sham group. Of these, sphingomyelin (SM; m/z 703.5747), a common mammalian cell membrane sphingolipid, was most significantly increased in the ligated mice. Of the 128 discriminatory metabolites, 18 and 41 were positively and negatively correlated with SM, respectively. The amino acids methionine and phenylalanine were increased by d-flow, while phosphatidylcholine and phosphatidylethanolamine were decreased by d-flow, and these metabolites were correlated with SM. Other significantly affected metabolites included dietary and environmental agents. Pathway analysis showed that the metabolic changes of d-flow impacted broad functional networks. These results suggest that signaling from d-flow occurring in focal regions induces systemic metabolic changes associated with atherosclerosis.
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Affiliation(s)
- Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Chan Woo Kim
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Douglas I Walker
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia; Department of Civil and Environmental Engineering, Tufts University, Medford, Massachusetts; and
| | - Dong Won Kang
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Sandeep Kumar
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Michael Orr
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Karan Uppal
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Arshed A Quyyumi
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia
| | - Hanjoong Jo
- Division of Cardiology, Department of Medicine, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia;
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Harter P, du Bois A, WImberger P, Schmalfeldt B, Emons G, Kreienberg R, Hilpert F, Lück HJ, Matulonis U, Gourley C, Friedlander M, Vergote I, Rustin G, Scott C, Meier W, Shapira-Frommer R, Safra T, Matei D, Fielding A, Mapherson E, Dougherty B, Juergensmeier JM, Orr M, Ledermann J. Erhaltungstherapie mit Olaparib nach platinhaltiger Re-induktion bei platinsensitivem serösem Ovarialkarzinomrezidiv: eine Placebo-kontrollierte Phase II Studie. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Go YM, Roede JR, Orr M, Liang Y, Jones DP. Integrated redox proteomics and metabolomics of mitochondria to identify mechanisms of cd toxicity. Toxicol Sci 2014; 139:59-73. [PMID: 24496640 DOI: 10.1093/toxsci/kfu018] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Cadmium (Cd) exposure contributes to human diseases affecting liver, kidney, lung, and other organ systems, but mechanisms underlying the pleotropic nature of these toxicities are poorly understood. Cd accumulates in humans from dietary, environmental (including cigarette smoke), and occupational sources, and has a twenty-year biologic half-life. Our previous mouse and cell studies showed that environmental low-dose Cd exposure altered protein redox states resulting in stimulation of inflammatory signaling and disruption of the actin cytoskeleton system, suggesting that Cd could impact multiple mechanisms of disease. In the current study, we investigated the effects of acute Cd exposure on the redox proteome and metabolome of mouse liver mitochondria to gain insight into associated toxicological mechanisms and functions. We analyzed redox states of liver mitochondrial proteins by redox proteomics using isotope coded affinity tag (ICAT) combined mass spectrometry. Redox ICAT identified 2687 cysteine-containing peptides (peptidyl Cys) of which 1667 peptidyl Cys (657 proteins) were detected in both control and Cd-exposed samples. Of these, 46% (1247 peptidyl Cys, 547 proteins) were oxidized by Cd more than 1.5-fold relative to controls. Bioinformatics analysis using MetaCore software showed that Cd affected 86 pathways, including 24 Cys in proteins functioning in branched chain amino acid (BCAA) and 14 Cys in proteins functioning in fatty acid (acylcarnitine/carnitine) metabolism. Consistently, high-resolution metabolomics data showed that Cd treatment altered levels of BCAA and carnitine metabolites. Together, these results show that mitochondrial protein redox and metabolites are targets in Cd-induced hepatotoxicity. The results further indicate that redox proteomics and metabolomics can be used in an integrated systems approach to investigate complex disease mechanisms.
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Affiliation(s)
- Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322
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Abstract
Epidemiological studies associate environmental cadmium (Cd) exposure with the risk of lung diseases. Although mechanisms are not fully elucidated, several studies demonstrate Cd effects on actin and actin-associated proteins. In a recent study of Cd at concentrations similar to environmental exposures, we found that redox-dependent inflammatory signaling by NF-κB was sensitive to the actin-disrupting agent, cytochalasin D. The goal of the present study was to use mass spectrometry-based redox proteomics to investigate Cd effects on the actin cytoskeleton proteome and related functional pathways in lung cells at low environmental concentrations. The results showed that Cd under conditions that did not alter total protein thiols or glutathione redox state caused significant oxidation of peptidyl Cys of proteins regulating actin cytoskeleton. Immunofluorescence microscopy of lung fibroblasts and pulmonary artery endothelial cells showed that low-dose Cd exposure stimulated filamentous actin formation and nuclear localization of destrin, an actin-depolymerizing factor. Taken together, the results show that redox states of peptidyl Cys in proteins associated with actin cytoskeleton pathways are selectively oxidized in lung by Cd at levels thought to occur from environmental exposure.
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Affiliation(s)
- Young-Mi Go
- Emory Univ., 205 Whitehead Research Center, Atlanta, GA 30322.
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Go YM, Roede JR, Walker DI, Duong DM, Seyfried NT, Orr M, Liang Y, Pennell KD, Jones DP. Selective targeting of the cysteine proteome by thioredoxin and glutathione redox systems. Mol Cell Proteomics 2013; 12:3285-96. [PMID: 23946468 DOI: 10.1074/mcp.m113.030437] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Thioredoxin (Trx) and GSH are the major thiol antioxidants protecting cells from oxidative stress-induced cytotoxicity. Redox states of Trx and GSH have been used as indicators of oxidative stress. Accumulating studies suggest that Trx and GSH redox systems regulate cell signaling and metabolic pathways differently and independently during diverse stressful conditions. In the current study, we used a mass spectrometry-based redox proteomics approach to test responses of the cysteine (Cys) proteome to selective disruption of the Trx- and GSH-dependent systems. Auranofin (ARF) was used to inhibit Trx reductase without detectable oxidation of the GSH/GSSG couple, and buthionine sulfoximine (BSO) was used to deplete GSH without detectable oxidation of Trx1. Results for 606 Cys-containing peptides (peptidyl Cys) showed that 36% were oxidized more than 1.3-fold by ARF, whereas BSO-induced oxidation of peptidyl Cys was only 10%. Mean fold oxidation of these peptides was also higher by ARF than BSO treatment. Analysis of potential functional pathways showed that ARF oxidized peptides associated with glycolysis, cytoskeleton remodeling, translation and cell adhesion. Of 60 peptidyl Cys oxidized due to depletion of GSH, 41 were also oxidized by ARF and included proteins of translation and cell adhesion but not glycolysis or cytoskeletal remodeling. Studies to test functional correlates showed that pyruvate kinase activity and lactate levels were decreased with ARF but not BSO, confirming the effects on glycolysis-associated proteins are sensitive to oxidation by ARF. These data show that the Trx system regulates a broader range of proteins than the GSH system, support distinct function of Trx and GSH in cellular redox control, and show for the first time in mammalian cells selective targeting peptidyl Cys and biological pathways due to deficient function of the Trx system.
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Affiliation(s)
- Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine
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Lung Lee K, Orr M, Lithgow B. A novel wavelet-statistics based feature detection system for detecting microcalcifications. Conf Proc IEEE Eng Med Biol Soc 2012; 2005:7664-7. [PMID: 17282056 DOI: 10.1109/iembs.2005.1616287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
This paper describes a wavelet-statistics based feature detection system as applied to microcalcification detection. While a number of researches have been conducted towards microcalcification detection using wavelet analysis and auxiliary information, most of this auxiliary information was obtained from within the spatial domain. In this research, a continuous wavelet transform was used to segment features and compute energy maps of these segmented features. The kurtoses of these features were computed in the wavelet domain. This statistical information together with the energy maps forms the inputs to a rule-based classifier. Physiological information from the spatial domain was used to exclude false-positives. The system was tested using a ROI from the LLNL database. The result is one false-positive within the cluster as classified by the radiologist.
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Affiliation(s)
- Kam Lung Lee
- Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria 3800, Australia
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Abstract
Cadmium (Cd) is a widely dispersed environmental agent that causes oxidative toxicity through mechanisms that are sensitive to thioredoxin-1 (Trx1). Trx1 is a cytoplasmic protein that translocates to nuclei during oxidative stress. Recent research shows that interaction of Trx1 with actin plays a critical role in cell survival and that increased nuclear Trx-1 potentiates proinflammatory signaling and death in cell and mouse models. These observations indicate that oxidative toxicity caused by low-dose Cd could involve disruption of actin-Trx1 interaction, nuclear Trx1 translocation, and potentiation of proinflammatory cell death mechanisms. In this study, we investigated the role of nuclei-localized Trx1 in Cd-induced inflammation and cytotoxicity using in vitro and in vivo models. The results show that Cd stimulated nuclear translocation of Trx1 and p65 of NF-κB. Elevation of Trx1 in nuclei in in vitro cells and kidney of transgenic mice potentiated Cd-stimulated NF-κB activation and cell death. Cd-stimulated Trx1 nuclear translocation and NF-κB activation were inhibited by cytochalasin D, an inhibitor of actin polymerization, suggesting that actin regulates Trx1 nuclear translocation and NF-κB activation by Cd. A nuclear-targeted dominant negative form of Trx1 blocked Cd-stimulated NF-κB activation and decreased cell death. Addition of zinc, known to antagonize Cd toxicity by increasing metallothionein, had no effect on Cd-stimulated nuclear translocation of Trx1 and NF-κB activation. Taken together, the results show that nuclear translocation and accumulation of redox-active Trx1 in nuclei play an important role in Cd-induced inflammation and cell death.
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Affiliation(s)
- Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia 30322, USA
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50
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Affiliation(s)
- Michael Orr
- Sussex Partnership NHS Foundation Trust, Worthing, UK.
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