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Ahmed ST, Li R, Richardson P, Ghosh S, Steele L, White DL, Djotsa AN, Sims K, Gifford E, Hauser ER, Virani SS, Morgan R, Delclos G, Helmer DA. Association of Atherosclerotic Cardiovascular Disease, Hypertension, Diabetes, and Hyperlipidemia With Gulf War Illness Among Gulf War Veterans. J Am Heart Assoc 2023; 12:e029575. [PMID: 37772504 PMCID: PMC10727258 DOI: 10.1161/jaha.123.029575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 07/20/2023] [Indexed: 09/30/2023]
Abstract
BACKGROUND Approximately 30% of the 700 000 Gulf War veterans report a chronic symptom-based illness of varying severity referred to as Gulf War illness (GWI). Toxic deployment-related exposures have been implicated in the cause of GWI, some of which contribute to metabolic dysregulation and lipid abnormalities. As this cohort ages, the relationship between GWI and atherosclerotic cardiovascular disease (ASCVD) is a growing concern. We evaluated associations between GWI and ASCVD, diabetes, hyperlipidemia, and hypertension in veterans of the Gulf War (1990-1991). METHODS AND RESULTS Analysis of survey data collected in 2014 to 2016 from a national sample of deployed Gulf War veterans (n=942) and Veterans Health Administration electronic health record data (n=669). Multivariable logistic regression models tested for associations of GWI with self-reported ASCVD, diabetes, hyperlipidemia, and hypertension, controlling for confounding factors. Separate models tested for GWI associations with ASCVD and risk factors documented in the electronic health record. GWI was associated with self-reported hypertension (adjusted odds ratio [aOR], 1.67 [95% CI, 1.18-2.36]), hyperlipidemia (aOR, 1.46 [95% CI, 1.03-2.05]), and ASCVD (aOR, 2.65 [95% CI, 1.56-4.51]). In the subset of veterans with electronic health record data, GWI was associated with documented diabetes (aOR, 2.34 [95% CI, 1.43-3.82]) and hypertension (aOR, 2.84 [95% CI, 1.92-4.20]). Hyperlipidemia and hypertension served as partial mediators of the association between GWI and self-reported ASCVD. CONCLUSIONS Gulf War veterans with GWI had higher odds of hyperlipidemia, hypertension, diabetes, and ASCVD compared with Gulf War veterans without GWI. Further examination of the mechanisms underlying this association, including a possible shared exposure-related mechanism, is necessary.
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Affiliation(s)
- Sarah T. Ahmed
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
| | - Ruosha Li
- Department of Biostatistics and Data Sciences, School of Public HealthThe University of Texas Health Science Center at HoustonHoustonTX
| | - Peter Richardson
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
| | - Saurendro Ghosh
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
| | - Lea Steele
- Yudofsky Division of Neuropsychiatry, Department of Psychiatry and Behavioral SciencesBaylor College of MedicineHoustonTX
| | - Donna L. White
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
| | - Alice Nono Djotsa
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
| | - Kellie Sims
- Cooperative Studies Program Epidemiology Center–Durham, Durham VA Medical CenterDurham VA Health Care SystemDurhamNC
| | - Elizabeth Gifford
- Cooperative Studies Program Epidemiology Center–Durham, Durham VA Medical CenterDurham VA Health Care SystemDurhamNC
| | - Elizabeth R. Hauser
- Cooperative Studies Program Epidemiology Center–Durham, Durham VA Medical CenterDurham VA Health Care SystemDurhamNC
- Duke Molecular Physiology Institute and Department of Biostatistics and BioinformaticsDuke University Medical CenterDurhamNC
| | - Salim S. Virani
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Cardiology and Cardiovascular Research, Department of MedicineBaylor College of MedicineHoustonTX
- Section of Cardiology, Department of MedicineMichael E. DeBakey VA Medical CenterHoustonTX
| | - Robert Morgan
- Department of Management, Policy and Community Health, School of Public HealthThe University of Texas Health Science Center at HoustonHoustonTX
| | - George Delclos
- Southwest Center for Occupational and Environmental Health, Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public HealthThe University of Texas Health Science Center at HoustonHoustonTX
| | - Drew A. Helmer
- Center for Innovations in Quality, Effectiveness and SafetyMichael E. DeBakey VA Medical CenterHoustonTX
- Section of Health Services Research, Department of MedicineBaylor College of MedicineHoustonTX
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Michalovicz LT, Kelly KA, Miller DB, Sullivan K, O'Callaghan JP. The β-adrenergic receptor blocker and anti-inflammatory drug propranolol mitigates brain cytokine expression in a long-term model of Gulf War Illness. Life Sci 2021; 285:119962. [PMID: 34563566 PMCID: PMC9047058 DOI: 10.1016/j.lfs.2021.119962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 12/03/2022]
Abstract
Aims: Growing evidence suggests that Gulf War Illness (GWI) is the result of underlying neuroimmune dysfunction. For example, previously we found that several GWI-relevant organophosphate acetylcholinesterase inhibitors produce heightened neuroinflammatory responses following subchronic exposure to stress hormone as a mimic of high physiological stress. The goal of the current study was to evaluate the potential for the β-adrenergic receptor inhibitor and anti-inflammatory drug, propranolol, to treat neuroinflammation in a novel long-term mouse model of GWI. Main methods: Adult male C57BL/6J mice received a subchronic exposure to corticosterone (CORT) at levels mimicking high physiological stress followed by exposure to the sarin surrogate, diisopropyl fluorophosphate (DFP). These mice were then re-exposed to CORT every other week for a total of five weeks, followed by a systemic immune challenge with lipopolysaccharide (LPS). Animals receiving the propranolol treatment were given a single dose (20 mg/kg, i.p.) either four or 11 days prior to the LPS challenge. The potential anti-neuroinflammatory effects of propranolol were interrogated by analysis of cytokine mRNA expression. Key findings: We found that our long-term GWI model produces a primed neuroinflammatory response to subsequent immune challenge that is dependent upon GWI-relevant organophosphate exposure. Propranolol treatment abrogated the elaboration of inflammatory cytokine mRNA expression in the brain instigated in our model, having no treatment effects in non-DFP exposed groups. Significance: Our results indicate that propranolol may be a promising therapy for GWI with the potential to treat the underlying neuroinflammation associated with the illness.
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Affiliation(s)
- Lindsay T Michalovicz
- Health Effects Laboratory Division, Centers for Disease Control and Prevention-National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Kimberly A Kelly
- Health Effects Laboratory Division, Centers for Disease Control and Prevention-National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Diane B Miller
- Health Effects Laboratory Division, Centers for Disease Control and Prevention-National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | | | - James P O'Callaghan
- Health Effects Laboratory Division, Centers for Disease Control and Prevention-National Institute for Occupational Safety and Health, Morgantown, WV, USA.
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Michalovicz LT, Kelly KA, Sullivan K, O'Callaghan JP. Acetylcholinesterase inhibitor exposures as an initiating factor in the development of Gulf War Illness, a chronic neuroimmune disorder in deployed veterans. Neuropharmacology 2020; 171:108073. [PMID: 32247728 PMCID: PMC7398580 DOI: 10.1016/j.neuropharm.2020.108073] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/26/2020] [Accepted: 03/25/2020] [Indexed: 12/19/2022]
Abstract
Gulf War Illness (GWI) is a chronic multi-symptom disorder, characterized by symptoms such as fatigue, pain, cognitive and memory impairment, respiratory, skin and gastrointestinal problems, that is experienced by approximately one-third of 1991 Gulf War veterans. Over the nearly three decades since the end of the war, investigators have worked to elucidate the initiating factors and underlying causes of GWI. A significant portion of this research has indicated a strong correlation between GWI and exposure to a number of different acetycholinesterase inhibitors (AChEIs) in theater, such as sarin and cyclosarin nerve agents, chlorpyrifos and dichlorvos pesticides, and the anti-nerve agent prophylactic pyridostigmine bromide. Through studying these exposures and their relationship to the symptoms presented by ill veterans, it has become increasingly apparent that GWI is the likely result of an underlying neuroimmune disorder. While evidence indicates that AChEIs are a key exposure in the development of GWI, particularly organophosphate AChEIs, the mechanism(s) by which these chemicals instigate illness appears to be related to "off-target", non-cholinergic effects. In this review, we will discuss the role of AChEI exposure in the development and persistence of GWI; in particular, how these chemicals, combined with other exposures, have led to a chronic neuroimmune disorder. This article is part of the special issue entitled 'Acetylcholinesterase Inhibitors: From Bench to Bedside to Battlefield'.
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Affiliation(s)
- Lindsay T Michalovicz
- Health Effects Laboratory Division, Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Kimberly A Kelly
- Health Effects Laboratory Division, Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | | | - James P O'Callaghan
- Health Effects Laboratory Division, Centers for Disease Control and Prevention - National Institute for Occupational Safety and Health, Morgantown, WV, USA.
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Freire Machi J, Schmidt R, Salgueiro LM, Fernandes Stoyell-Conti F, de Andrade Barboza C, Hernandez DR, Morris M. Exercise benefits the cardiac, autonomic and inflammatory responses to organophosphate toxicity. Toxicol Rep 2019; 6:666-673. [PMID: 31673494 PMCID: PMC6816132 DOI: 10.1016/j.toxrep.2019.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/23/2019] [Accepted: 06/25/2019] [Indexed: 12/14/2022] Open
Abstract
DFP promotes cardiac and autonomic dysfunction. DFP led to mild neuroinflammation. Exercise training prevents/attenuates some of the impairments provoked by DFP.
The organophosphate, diisopropyl fluorophosphate (DFP), may impair cardiovascular, autonomic and immune function while exercise training is thougt to be restorative. Experiments determined effects of wheel exercise in C57B1 male mice, testing cardiovascular and autonomic function and characterization of the immunological profile. Sedentary (S) and exercise (ET) groups were treated with corticosterone (CORT) followed by injection of DFP. This model was associated with systolic and diastolic dysfunction in the S group, measured using echocardiography (ECHO). Chronic exercise ameliorated the cardiac deficit. Autonomic balance, accessed by heart rate variability (HRV), showed increased sympathetic and decreased parasympathetic modulation in S group. Autonomic balance in ET mice was not affected by DFP. Our DFP model resulted in mild neuroinflammation seen by increased IL5, IL12 and MIP2 in brain and plasma IL6 and IL1a. DFP had a negative impact on cardiac/autonomic function and inflammatory markers, effects reduced by exercise. Data suggest a beneficial effect of exercise training on the cardiovascular and autonomic responses to DFP/CORT.
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Affiliation(s)
- Jacqueline Freire Machi
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA
| | - Rodrigo Schmidt
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA.,Heart Institute (InCor), School of Medicine, University of Sao Paulo, São Paulo, SP, Brazil
| | - Luis M Salgueiro
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA
| | - Filipe Fernandes Stoyell-Conti
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA.,College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Catarina de Andrade Barboza
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA.,Heart Institute (InCor), School of Medicine, University of Sao Paulo, São Paulo, SP, Brazil.,College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA.,University of Campinas, Campinas, SP, Brazil
| | - Diana Rosa Hernandez
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA
| | - Mariana Morris
- Institute of Neuro-Immune Medicine, Dr. Kiran C. Patel College of Osteopathic MediciNE, Nova Southeastern University, Fort Lauderdale, FL, USA.,Miami Veterans Affairs Healthcare System, Miami, FL, USA
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Shiyovich A, Matot R, Elyagon S, Liel-Cohen N, Rosman Y, Shrot S, Kassirer M, Katz A, Etzion Y. QT Prolongation as an Isolated Long-Term Cardiac Manifestation of Dichlorvos Organophosphate Poisoning in Rats. Cardiovasc Toxicol 2019; 18:24-32. [PMID: 28510081 DOI: 10.1007/s12012-017-9409-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Organophosphates (OP) are used extensively as pesticides and as chemical weapons. Cardiotoxicity is a major concern in survivors of the acute poisoning. To characterize the delayed cardiac effects of OP, rats were poisoned by intraperitoneal administration of dichlorvos. In group I, poisoning (0.25-, 0.75-, 1.4-LD50) was followed by application of atropine and obidoxime. In group II, poisoning (0.35-, 0.5-LD50) was done without antidotes. Cardiac evaluation included electrocardiography and echocardiography 2- and 6-week post-exposure, arrhythmia susceptibility following administration of Isoproterenol (150 mcg/kg), and histological evaluation. All poisoned animals displayed cholinergic symptoms. In group I, all animals exposed to 1.4-LD50 (n = 3) had profound convulsions and died despite antidote treatment. However, in the lower doses, all animals survived and no cardiac abnormalities were noted during follow-up. In group II, six animals had convulsions and died. Surviving animals had mild but significant prolongation of corrected QT at both 2 and 6 weeks, compared to shams. There were no notable echocardiographic, gravimetric, or histological differences between poisoned and sham animals. Our data indicate that dichlorvos poisoning is associated with QT prolongation without anatomical or histopathological abnormalities. This new model can be used to elaborate the molecular mechanism\s of QT prolongation following OP poisoning.
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Affiliation(s)
- Arthur Shiyovich
- Medical Corps HQ, IDF, P.O. Box 02149, Tel Hashomer Base, Ramat-Gan, Israel
| | - Ran Matot
- Cardiac Arrhythmia Research Laboratory, Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel
| | - Sigal Elyagon
- Cardiac Arrhythmia Research Laboratory, Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel
| | - Noah Liel-Cohen
- Department of Cardiology, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yossi Rosman
- Medical Corps HQ, IDF, P.O. Box 02149, Tel Hashomer Base, Ramat-Gan, Israel
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Shai Shrot
- Medical Corps HQ, IDF, P.O. Box 02149, Tel Hashomer Base, Ramat-Gan, Israel
| | - Michael Kassirer
- Medical Corps HQ, IDF, P.O. Box 02149, Tel Hashomer Base, Ramat-Gan, Israel
- Pulmonary Institute, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Amos Katz
- Department of Cardiology, Barzilai Medical Center, Ashkelon and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yoram Etzion
- Cardiac Arrhythmia Research Laboratory, Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel.
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Abou-Donia MB, Siracuse B, Gupta N, Sobel Sokol A. Sarin (GB, O-isopropyl methylphosphonofluoridate) neurotoxicity: critical review. Crit Rev Toxicol 2016; 46:845-875. [PMID: 27705071 PMCID: PMC5764759 DOI: 10.1080/10408444.2016.1220916] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Sarin (GB, O-isopropyl methylphosphonofluoridate) is a potent organophosphorus (OP) nerve agent that inhibits acetylcholinesterase (AChE) irreversibly. The subsequent build-up of acetylcholine (ACh) in the central nervous system (CNS) provokes seizures and, at sufficient doses, centrally-mediated respiratory arrest. Accumulation of ACh at peripheral autonomic synapses leads to peripheral signs of intoxication and overstimulation of the muscarinic and nicotinic receptors, which is described as "cholinergic crisis" (i.e. diarrhea, sweating, salivation, miosis, bronchoconstriction). Exposure to high doses of sarin can result in tremors, seizures, and hypothermia. More seriously, build-up of ACh at neuromuscular junctions also can cause paralysis and ultimately peripherally-mediated respiratory arrest which can lead to death via respiratory failure. In addition to its primary action on the cholinergic system, sarin possesses other indirect effects. These involve the activation of several neurotransmitters including gamma-amino-butyric acid (GABA) and the alteration of other signaling systems such as ion channels, cell adhesion molecules, and inflammatory regulators. Sarin exposure is associated with symptoms of organophosphate-induced delayed neurotoxicity (OPIDN) and organophosphate-induced chronic neurotoxicity (OPICN). Moreover, sarin has been involved in toxic and immunotoxic effects as well as organophosphate-induced endocrine disruption (OPIED). The standard treatment for sarin-like nerve agent exposure is post-exposure injection of atropine, a muscarinic receptor antagonist, accompanied by an oxime, an AChE reactivator, and diazepam.
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Affiliation(s)
- Mohamed B Abou-Donia
- a Department of Pharmacology and Cancer Biology , Duke University , Durham , NC , USA
| | - Briana Siracuse
- a Department of Pharmacology and Cancer Biology , Duke University , Durham , NC , USA
| | - Natasha Gupta
- a Department of Pharmacology and Cancer Biology , Duke University , Durham , NC , USA
| | - Ashly Sobel Sokol
- a Department of Pharmacology and Cancer Biology , Duke University , Durham , NC , USA
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Wu J, Li D, Du L, Baldawi M, Gable ME, Askari A, Liu L. Ouabain prevents pathological cardiac hypertrophy and heart failure through activation of phosphoinositide 3-kinase α in mouse. Cell Biosci 2015; 5:64. [PMID: 26587223 PMCID: PMC4652409 DOI: 10.1186/s13578-015-0053-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/03/2015] [Indexed: 11/14/2022] Open
Abstract
Background
Use of low doses of digitalis to prevent the development of heart failure was advocated decades ago, but conflicting results of early animal studies dissuaded further research on this issue. Recent discoveries of digitalis effects on cell signal pathways prompted us to reexamine the possibility of this prophylactic action of digitalis. The specific aim of the present study was to determine if subinotropic doses of ouabain would prevent pressure overload-induced cardiac remodeling in the mouse by activating phosphoinositide 3-kinase α (PI3Kα). Results Studies were done on an existing transgenic mouse deficient in cardiac PI3Kα (p85-KO) but with normal cardiac contractility, a control mouse (Con), and on cultured adult cardiomyocytes. In Con myocytes, but not in p85-KO myocytes, ouabain activated PI3Kα and Akt, and caused cell growth. This occurred at low ouabain concentrations that did not activate the EGFR-Src/Ras/Raf/ERK cascade. Con and p85-KO mice were subjected to transverse aortic constriction (TAC) for 8 weeks. A subinotropic dose of ouabain (50 µg/kg/day) was constantly administrated by osmotic mini-pumps for the first 4 weeks. All mice were monitored by echocardiography throughout. Ouabain early treatment attenuated TAC-induced cardiac hypertrophy and fibrosis, and improved cardiac function in TAC-operated Con mice but not in TAC-operated p85-KO mice. TAC downregulated α2-isoform of Na+/K+-ATPase but not its α1-isoform in Con hearts, and ouabain treatment prevented the downregulation of α2-isoform. TAC-induced reduction of α2-isoform did not occur in p85-KO hearts. Conclusions Our results show that (a) safe doses of ouabain prevent or delay cardiac remodeling of pressure overloaded mouse heart; and (b) these prophylactic effects are due to ouabain binding to α2-isoform resulting in the selective activation of PI3Kα. Our findings also suggest that potential prophylactic use of digitalis for prevention of heart failure in man deserves serious consideration. Electronic supplementary material The online version of this article (doi:10.1186/s13578-015-0053-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jian Wu
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA ; Center for Craniofacial Molecular Biology, University of Southern California, Los Angeles, CA USA
| | - Daxiang Li
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA ; State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, People's Republic of China
| | - Lingling Du
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA
| | - Mustafa Baldawi
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA
| | - Marjorie E Gable
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA
| | - Amir Askari
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA
| | - Lijun Liu
- Department of Biochemistry and Cancer Biology, College of Medicine and Life Sciences, University of Toledo, 3000 Arlington Ave., MS 1010, Toledo, OH 43614 USA
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Fritsch P, Craddock TJA, del Rosario RM, Rice MA, Smylie A, Folcik VA, de Vries G, Fletcher MA, Klimas NG, Broderick G. Succumbing to the laws of attraction. ACTA ACUST UNITED AC 2014. [DOI: 10.4161/sysb.28948] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Broderick G, Ben-Hamo R, Vashishtha S, Efroni S, Nathanson L, Barnes Z, Fletcher MA, Klimas N. Altered immune pathway activity under exercise challenge in Gulf War Illness: an exploratory analysis. Brain Behav Immun 2013. [PMID: 23201588 DOI: 10.1016/j.bbi.2012.11.007] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Though potentially linked to the basic physiology of stress response we still have no clear understanding of Gulf War Illness (GWI), a debilitating illness presenting with a complex constellation of immune, endocrine and neurological symptoms. Here we compared male GWI (n=20) with healthy veterans (n=22) and subjects with chronic fatigue syndrome/myalgic encephalomyelitis (CFS/ME) (n=7). Blood was drawn during a Graded eXercise Test (GXT) prior to exercise, at peak effort (VO2 max) and 4-h post exercise. Affymetrix HG U133 plus 2.0 microarray gene expression profiling in peripheral blood mononuclear cells (PBMCs) was used to estimate activation of over 500 documented pathways. This was cast against ELISA-based measurement of 16 cytokines in plasma and flow cytometric assessment of lymphocyte populations and cytotoxicity. A 2-way ANOVA corrected for multiple comparisons (q statistic <0.05) indicated significant increases in neuroendocrine-immune signaling and inflammatory activity in GWI, with decreased apoptotic signaling. Conversely, cell cycle progression and immune signaling were broadly subdued in CFS. Partial correlation networks linking pathways with symptom severity via changes in immune cell abundance, function and signaling were constructed. Central to these were changes in IL-10 and CD2+ cell abundance and their link to two pathway clusters. The first consisted of pathways supporting neuronal development and migration whereas the second was related to androgen-mediated activation of NF-κB. These exploratory results suggest an over-expression of known exercise response mechanisms as well as illness-specific changes that may involve an overlapping stress-potentiated neuro-inflammatory response.
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Affiliation(s)
- Gordon Broderick
- Department of Medicine, University of Alberta, Edmonton, Canada.
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Alghamri MS, Weir NM, Anstadt MP, Elased KM, Gurley SB, Morris M. Enhanced angiotensin II-induced cardiac and aortic remodeling in ACE2 knockout mice. J Cardiovasc Pharmacol Ther 2012; 18:138-51. [PMID: 23043153 DOI: 10.1177/1074248412460124] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Angiotensin-converting enzyme 2 (ACE2) is present in the heart and thought to exert protective functions. We conducted studies in ACE2 deficient mice to determine whether enzyme loss would exacerbate the cardiac and vascular pathological responses to chronic subcutaneous (sc) angiotensin II (Ang II) infusion. Eight-week-old male ACE2 knockout (KO) and wild type (WT) mice were infused with Ang II (1000 ng/kg per min, 4 weeks) using mini-osmotic pumps. Blood pressure (radiotelemetry), cardiac function (echocardiography, echo), cardiac/aortic structure (histology, collagen, and oxidative stress), and vascular inflammation were examined. Before Ang II infusion, ACE2 KO mice showed unaltered cardiac function and blood pressure. After 4 weeks of Ang II infusion, the mean arterial pressure (MAP) increased from 96 ± 2 to 136 ± 17 mm Hg (∼40%) in WT and from 104 ± 5 to 141 ± 13 mm Hg (∼ 35%) in ACE2 KO. While there were no differences in MAP between groups, the ACE2 KO responded differently to the hypertensive stimulus. Echo analysis revealed severe myocardial dysfunction in Ang II-infused ACE2 KO (Ang ACE2 KO). Ejection fraction was lower (39% versus 50%) as was fractional shortening (27% versus 38%) in ACE2 KO versus WT, respectively. Cardiac dysfunction was associated with hypertrophic cardiomyopathy shown by increased left-ventricular wall thickness, average cardiomyocyte cross-sectional area, and heart weight/body weight ratio. Collagen staining in the myocardium and aorta revealed increased collagen in Ang ACE2 KO, suggestive of remodeling. Results also showed enhanced oxidative stress in the myocardium and aorta of Ang ACE2 KO. There was a 3-fold elevation in macrophage inflammatory protein 1α (MIP 1α) in the aorta of ACE2 KO. Studies in the ACE2 KO model reveal the importance of ACE2 in the maladaptive cardiac and aortic responses to Ang II stimulation, seen as enhanced remodeling using physiological, structural, and biochemical markers. Results document a cardio- and vascular-protective role of ACE2 under pathological conditions.
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Affiliation(s)
- Mahmoud S Alghamri
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, OH, USA
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