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Kelly C, Chu M, Untaru R, Assadi-Khansari B, Chen D, Croft A, Horowitz J, Sverdlov AL, Ngo DTM. Heart failure is associated with low circulating levels of secreted frizzled receptor protein 5 (Sfrp5). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.918] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Obesity and metabolic dysregulation are closely associated with the pathophysiology of multiple cardiovascular diseases (CVD). To date, the pathophysiological mechanism(s) of obesity and its link with cardiovascular systems remain largely unknown. Adipose tissue inflammation as a result of excessive fat expansion in obesity, leading to increased systemic production of growth factors and recruitment of inflammatory cells have been postulated to be a major factor. Secreted frizzled-related protein 5 (SFRP5) is an anti-inflammatory adipokine that is linked with obesity and metabolic regulation and has been indicated to affect cardiovascular functions. Currently, the role of circulating SFRP5 levels as a biomarker for cardiovascular diseases are poorly understood, with studies yielding discordant results.
Purpose
This study aims to evaluate the relationship between circulating SFRP5 and cardiovascular functions in a cohort of patients with established CVD.
Methods
Patients (n=262, 148 male (56.5%), age (68±11 yrs)) presenting to the cardiology unit for cardiovascular investigations were recruited into the study. Plasma SFRP5 levels were measured via enzyme-linked immunosorbent assay (ELISA). Associations between plasma SFRP5 levels, cardiovascular functions, and patients' co-morbidities were analysed using univariate and multivariate analyses.
Results
Plasma SFRP5 levels were significantly lower in patients presenting with: heart failure (HF) vs non-HF (median; (10.7 vs 31.0; p<0.001); coronary artery disease (CAD) vs non-CAD; (11.0 vs 33.8; p<0.001); and atrial fibrillation (AF) vs non-AF; (11.2 vs 23.2; p=0.001). On univariate analyses, SFRP5 levels also significantly positively correlated with left ventricular ejection fraction (LVEF) (r=0.52, p<0.001), estimated glomerular filtration rate (eGFR) (r=0.16, p=0.02), total cholesterol levels and triglycerides (r=0.29, p<0.001; r=0.17, p<0.01 respectively). Low SFRP5 levels were correlated with high C-reactive protein (CRP) and E/E' (r=−0.29, p<0.001, r=−0.30, p<0.001, respectively). Patients with HF, CAD, statin use, low LVEF, low triglycerides, high CRP and high eGFR were associated with lower SFRP5 levels independent of age, BMI or diabetes on multivariate analysis (overall model r=0.729, SE=0.638).
Conclusion
Our results show that low plasma SFRP5 levels are independently associated with HF, CAD, and impaired systolic and diastolic functions. These results suggest that SFRP5 may regulate cardiovascular functions independent of obesity and metabolic regulations.
Funding Acknowledgement
Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): Heart Foundation of Australia Future Leader FellowshipsNSW Ministry of Health EMC FellowshipHeart Foundation of Australia Future Leader Fellowship
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Affiliation(s)
- C Kelly
- University of Newcastle , Newcastle , Australia
| | - M Chu
- University of Adelaide , Adelaide , Australia
| | - R Untaru
- University of Newcastle , Newcastle , Australia
| | | | - D Chen
- University of Newcastle , Newcastle , Australia
| | - A Croft
- University of Newcastle , Newcastle , Australia
| | - J Horowitz
- University of Adelaide , Adelaide , Australia
| | | | - D T M Ngo
- University of Newcastle , Newcastle , Australia
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Pannu J, Venious G, Gallagher R, Shaver A, Cloyes R, Josan E, Donnelly E, King M, Knopp M, Merritt R, Kneuertz P, D'souza D, Ghattas C, Revelo A, Pastis N, Sowers T, Eastep C, Ottersbach M, Malinky M, Reinbolt R, Wert M, Horowitz J, Carbone D. P1.03-01 Do We Follow Incidental Lung Nodules Appropriately? A Retrospective Study. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.166] [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: 10/14/2022]
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Ong G, Sellers A, Mahadavan G, Nguyen T, Worthley M, Chew D, Horowitz J. “Bushfire Season” in Australia: Impacts of Variability in Ambient Temperature, Air Pollution and Bushfires on Incidence of Acute Coronary Syndromes and Takotsubo Syndrome. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.487] [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: 10/16/2022]
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Chen D, Untaru R, Liu S, Assafi-Khansari B, Croft A, Kelly C, Ajaero C, Boyle A, Horowitz J, Ngo D, Sverdlov A. Follistatin-like 3 (FSTL3) Levels in Patients With Cardiovascular Disease. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.070] [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: 10/20/2022]
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Velagic A, Li J, Qin C, Li M, Deo M, Marshall S, Woodman O, Horowitz J, Kemp-Harper B, Ritchie R. Nitroxyl Exerts Positive Inotropic and Vasodilator Effects in the Type 2 Diabetic Heart. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.036] [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: 10/20/2022]
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Surikow S, Nguyen T, Stafford I, Horowitz J. Inhibition of Nitric Oxide Synthase: Impact on Cardiovascular Injury and Mortality in a Model of Takotsubo Syndrome. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Aulin J, Hijazi Z, Lindback J, Alexander JH, Gersh B, Granger CB, Hanna M, Horowitz J, Hylek E, Lopes RD, McMurray JJV, Siegbahn A, Wallentin L. P976Elevated biomarkers are associated with increased risk of death and heart failure hospitalization in patients with atrial fibrillation: insights from the ARISTOTLE trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p976] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Aulin
- Dept of Medical Sciences, Cardiology, and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Z Hijazi
- Dept of Medical Sciences, Cardiology, and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - J Lindback
- Uppsala Clinical Research Center, UCR, Uppsala, Sweden
| | - J H Alexander
- Duke Clinical Research Institute, Durham, United States of America
| | - B Gersh
- Mayo Clinic, College of Medicine, Rochester, United States of America
| | - C B Granger
- Duke Clinical Research Institute, Durham, United States of America
| | - M Hanna
- Bristol-Myers Squibb, former employee, Princeton, United States of America
| | - J Horowitz
- University of Adelaide, Adelaide, Australia
| | - E Hylek
- Boston University, Boston, United States of America
| | - R D Lopes
- Duke Clinical Research Institute, Durham, United States of America
| | - J J V McMurray
- University of Glasgow, BHF Cardiovascular Research Centre, Glasgow, United Kingdom
| | - A Siegbahn
- Uppsala University, Dept of Medical Sciences, Clinical Chemistry, Uppsala, Sweden
| | - L Wallentin
- Dept of Medical Sciences, Cardiology, and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
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Imam H, Ha Nguyen T, Tu S, Tonnu O, Chirkov Y, Horowitz J. P1678Pathogenesis of coronary artery spasm: a critical role for impaired platelet nitric oxide signaling. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1678] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Imam
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
| | - T Ha Nguyen
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
| | - S Tu
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
| | - O Tonnu
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
| | - Y Chirkov
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
| | - J Horowitz
- BHI for Translational Research, TQEH, The University of Adelaide, Adelaide, Australia
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Chen D, Liu S, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Release Occurs Synchronously With Onset of Doxorubicin-Induced Cardiotoxicity in an Isolated Myocardial Cell Model. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.927] [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: 10/28/2022]
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Liu S, Chen D, Horowitz J. Myocardial Toxicity of Doxorubicin Compared with that of Hydrogen Peroxide and Peroxynitrite: Results from Flow Cytometric Analyses. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.159] [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: 10/28/2022]
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Nguyen T, Ong G, Stansborough J, Surikow S, Chong C, Horowitz J. P604Hypotension at admission and extent of release of NT-proBNP and catecholamines are associated with increased medium-term mortality rate in Takotsubo cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p604] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Aulin J, Hijazi Z, Andersson U, Alexander J, Gersh B, Granger C, Hanna M, Horowitz J, Hylek E, Lopes R, Siegbahn A, Wallentin L. P3626Serial IL-6 levels and risk of death in anticoagulated patients with atrial fibrillation: Insights from the ARISTOTLE trial. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3626] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chu M, Chua S, Assadi-Khansari B, Amarasekera A, Horowitz J, Sverdlov A, Ngo D. Circulating Secreted Frizzled-Related Protein 5 (Sfrp5) is Decreased in Patients with Diabetes and is Associated with Diabetic Control. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.165] [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: 11/17/2022]
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Chua S, Goh V, Assadi-Khansari B, Chen D, Hii J, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 is Elevated in Patients with Atrial Fibrillation but is Unchanged Following Ablative Therapy. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.279] [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: 10/19/2022]
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Assadi-Khansari B, Chua S, Chapman M, Ali O, Nguyen H, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Predicts Aortic Root Enlargement in Patients with Bicuspid Aortic Valve. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.179] [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: 11/29/2022]
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Assadi-Khansari B, Chua S, Horowitz J, Sverdlov A, Ngo D. Follistatin-like 3 Is Associated with Increased Left Ventricular Mass in an Ageing Population. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.178] [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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Ajaero C, Chan A, Arstall M, Hersztyn T, McGavigan A, Horowitz J. Implications of Cardiac Resynchronisation Therapy (Crt) on the Pathophysiology of Congestive Heart Failure: Focus on Endothelial Function and Inflammatory Activation. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.273] [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: 11/24/2022]
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Chen D, Procter N, Goh V, Liu S, Chua S, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. New Onset Atrial Fibrillation Is Associated with Elevated Galactic-3 Levels. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.188] [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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Chua S, Ajaero C, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. Galectin 3 Predicts Functional Capacity in Patients with Severe Congestive Heart Failure (CHF). Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.262] [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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Chong C, Liu S, Sallustio B, Chirkov Y, Horowitz J. Effects of Perhexiline on Insulin and Nitric Oxide Signalling in Diabetics. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.200] [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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21
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Chua S, Assadi-Khansari B, Horowitz J, Sverdlov A, Ngo D. Galectin-3 Levels Is not a Predictor of Increased Left Ventricular Mass in a Healthy Ageing Population. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.180] [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: 11/24/2022]
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Horowitz J. Occupation times and other accumulation processes. ADV APPL PROBAB 2016. [DOI: 10.2307/1426345] [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: 11/10/2022]
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Tully PJ, Turnbull DA, Beltrame J, Horowitz J, Cosh S, Baumeister H, Wittert GA. Panic disorder and incident coronary heart disease: a systematic review and meta-regression in 1131612 persons and 58111 cardiac events. Psychol Med 2015; 45:2909-2920. [PMID: 26027689 DOI: 10.1017/s0033291715000963] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Substantial healthcare resources are devoted to panic disorder (PD) and coronary heart disease (CHD); however, the association between these conditions remains controversial. Our objective was to conduct a systematic review of studies assessing the association between PD, related syndromes, and incident CHD. METHOD Relevant studies were retrieved from Medline, EMBASE, SCOPUS and PsycINFO without restrictions from inception to January 2015 supplemented with hand-searching. We included studies that reported hazard ratios (HR) or sufficient data to calculate the risk ratio and 95% confidence interval (CI) which were pooled using a random-effects model. Studies utilizing self-reported CHD were ineligible. Twelve studies were included comprising 1 131 612 persons and 58 111 incident CHD cases. RESULTS PD was associated with the primary incident CHD endpoint [adjusted HR (aHR) 1.47, 95% CI 1.24-1.74, p < 0.00001] even after excluding angina (aHR 1.49, 95% CI 1.22-1.81, p < 0.00001). High to moderate quality evidence suggested an association with incident major adverse cardiac events (MACE; aHR 1.40, 95% CI 1.16-1.69, p = 0.0004) and myocardial infarction (aHR 1.36, 95% CI 1.12-1.66, p = 0.002). The risk for CHD was significant after excluding depression (aHR 1.64, 95% CI 1.45-1.85) and after depression adjustment (aHR 1.38, 95% CI 1.03-1.87). Age, sex, length of follow-up, socioeconomic status and diabetes were sources of heterogeneity in the primary endpoint. CONCLUSIONS Meta-analysis showed that PD was independently associated with incident CHD, myocardial infarction and MACE; however, reverse causality cannot be ruled out and there was evidence of heterogeneity.
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Affiliation(s)
- P J Tully
- Freemasons Foundation Centre for Men's Health,Discipline of Medicine,School of Medicine,The University of Adelaide,Australia
| | - D A Turnbull
- Freemasons Foundation Centre for Men's Health,Discipline of Medicine,School of Medicine,The University of Adelaide,Australia
| | - J Beltrame
- School of Medicine,Discipline of Medicine,The University of Adelaide,Australia
| | - J Horowitz
- School of Medicine,Discipline of Medicine,The University of Adelaide,Australia
| | - S Cosh
- Clinic of Psychiatry and Psychotherapy II,University of Ulm,Gunzburg,Germany
| | - H Baumeister
- Department of Rehabilitation Psychology and Psychotherapy,Institute of Psychology,University of Freiburg,Germany
| | - G A Wittert
- Freemasons Foundation Centre for Men's Health,Discipline of Medicine,School of Medicine,The University of Adelaide,Australia
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Goto S, Zhu J, Lisheng L, Oh BH, Wojdyla D, Hanna M, Horowitz J, Wallentin L, Xavier D, Alexander JH. Efficacy and safety of apixaban compared with warfarin for stroke prevention in atrial fibrillation in East Asia. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5613] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Nguyen TH, Neil C, Singh K, Heresztyn T, Chirkov Y, Horowitz J. Determinants of prolonged impairment of global longitudinal strain post Takotsubo cardiomyopathy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4247] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Procter N, Ball J, Ngo D, Chirkov Y, Isenberg J, Hylek E, Stewart S, Horowitz J. Impact of Female Gender and Admission Heart Rate on Platelet Aggregation and Nitric Oxide Signalling in Atrial Fibrillation. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.153] [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: 11/30/2022]
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Nguyen T, Neil C, Chong C, Singh K, Heresztyn T, Chirkov Y, Horowitz J. Can Recurrence of Takotsubo Cardiomyopathy be Predicted? Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.170] [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: 11/29/2022]
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Singh K, Neil C, Stansborough J, Nguyen H, Frenneaux M, Horowitz J. Interaction Between Left and Right Ventricular Dysfunction in Tako-Tsubo Cardiomyopathy: Impact on Haemodynamics and Morbidity. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.192] [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: 11/16/2022]
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Raman B, Singh K, Neil C, Nguyen T, Stansborough J, Zietz C, Horowitz J. Not Such a Rarity! Takotsubo Cardiomyopathy as a Mimic of ST Elevation Myocardial Infarction. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.202] [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: 11/16/2022]
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Nichols B, Shrestha RP, Horowitz J, Hollot CV, Germain MJ, Gaweda AE, Chait Y. Simplification of an erythropoiesis model for design of anemia management protocols in end stage renal disease. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2011:83-6. [PMID: 22254256 DOI: 10.1109/iembs.2011.6089902] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Many end stage renal disease (ESRD) patients suffer from anemia due to insufficient endogenous production of erythropoietin (EPO). The discovery of recombinant human EPO (rHuEPO) over 30 years ago has shifted the treatment of anemia for patients on dialysis from blood transfusions to rHuEPO therapy. Many anemia management protocols (AMPs) used by clinicians comprise a set of experience-based rules for weekly-to-monthly titration of rHuEPO doses based on hemoglobin (Hgb) measurements. In order to facilitate the design of an AMP based on formal control design methods, we present a physiologically-relevant erythropoiesis model, and show that its nonlinear dynamics can be approximated using a static nonlinearity, a step that greatly simplifies AMP design. We demonstrate applicability of our results using clinical data.
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Affiliation(s)
- B Nichols
- Departments, UMass, Amherst, MA 01003, USA
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Nguyen T, Horowitz J, Unger S. Cardiac Denervation in Chronic Heart Failure: Relationship to Changes in LV Function and to Arrhythmogenesis. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.186] [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: 11/30/2022]
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Chan W, Sverdlov A, Ngo D, Rajendran S, Chirkov Y, Horowitz J. Polycystic Ovarian Syndrome as a State of Premature Ageing of the Nitric Oxide System. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.630] [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: 10/28/2022]
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Nordin BEC, Lewis JR, Daly RM, Horowitz J, Metcalfe A, Lange K, Prince RL. The calcium scare--what would Austin Bradford Hill have thought? Osteoporos Int 2011; 22:3073-7. [PMID: 21633827 DOI: 10.1007/s00198-011-1680-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Accepted: 05/16/2011] [Indexed: 10/18/2022]
Abstract
UNLABELLED Detailed consideration of the suggested association between calcium supplementation and heart attacks has revealed weakness in the evidence which make the hypothesis highly implausible. INTRODUCTION The aim of this study was to evaluate the strength of the evidence that calcium supplementation increases the risk of myocardial infarction. METHODS This study used critical examination of a meta-analysis of the effects of calcium supplements on heart attacks in five prospective trials on 8,016 men and women, and consideration of related publications by the same author. RESULTS The meta-analysis was found to be subject to several limitations including non-adherence to the clinical protocol, multiple endpoint testing and failure to correctly adjust for endpoint ascertainment. The main risk factors for myocardial infarction were not available for 65% of the participants, and none of the trials had cardiovascular disease as its primary endpoint. There were more overweight participants, more subjects on thyroxine and more men on calcium than on placebo. In particular, over 65% of all the heart attacks were self-reported. When the evidence was considered in the light of Austin Bradford Hill's six main criteria for disease causation, it was found not to be biologically plausible or strong or to reflect a dose-response relationship or to be consistent or to reflect the relationship between the trends in calcium supplementation and heart attacks in the community or to have been confirmed by experiment. The addition of a more recent trial on 1,460 women over 5 years reduced the relative risk to 1.23 (P = 0.0695). CONCLUSION Present evidence that calcium supplementation increases heart attacks is too weak to justify a change in prescribing habits.
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Affiliation(s)
- B E C Nordin
- Endocrine and Metabolic Unit, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
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Weber M, Schueler R, Momcilovic D, Sinning J, Ghanem A, Werner N, Nickenig G, Hammerstingl C, Sun B, Hwang K, Cho M, Lee W, Choi S, Kim YG, Kim DH, Song JM, Kang DH, Song JK, Capoulade R, Clavel M, Dumesnil J, Chan K, Tam J, Teo K, Cote N, Mathieu P, Despres J, Pibarot P, Macron L, Lim P, Bensaid A, Nahum J, Attias D, Messika Zeitoun D, Dubois Rande J, Gueret P, Monin J, Le Tourneau T, Lardeux A, Garcia A, Kyndt F, Merot J, Hagege A, Levine R, Schott J, La Marec H, Probst V, Niki K, Sugawara M, Takamisawa I, Watanabe H, Sumiyoshi T, Hosoda S, Takanashi S, Veronesi F, Caiani E, Fusini L, Tamborini G, Sugeng L, Alamanni F, Pepi M, Lang R, Gripari P, Muratori M, Fusini L, Ajmone Marsan N, Hooi Ewe S, Arnold C, Van Der Kley F, Tamborini G, Pepi M, Bax J, Adda J, Mielot C, Cransac F, Zirphile X, Reant P, Sportouch-Dukhan C, Lafitte S, Donal E, Lancellotti P, Habib G, Akbar Ali O, Chapman M, Nguyen T, Chirkov Y, Horowitz J. Moderated Poster Sessions 1: Valvular heart disease: from bench to bedside * Thursday 8 December 2011, 08:30-12:30 * Location: Moderated Poster Area. European Journal of Echocardiography 2011. [DOI: 10.1093/ejechocard/jer205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Merrill S, Horowitz J, Traino AC, Chipkin SR, Hollot CV, Chait Y. Accuracy and optimal timing of activity measurements in estimating the absorbed dose of radioiodine in the treatment of Graves' disease. Phys Med Biol 2011; 56:557-71. [PMID: 21212469 DOI: 10.1088/0031-9155/56/3/003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Calculation of the therapeutic activity of radioiodine (131)I for individualized dosimetry in the treatment of Graves' disease requires an accurate estimate of the thyroid absorbed radiation dose based on a tracer activity administration of (131)I. Common approaches (Marinelli-Quimby formula, MIRD algorithm) use, respectively, the effective half-life of radioiodine in the thyroid and the time-integrated activity. Many physicians perform one, two, or at most three tracer dose activity measurements at various times and calculate the required therapeutic activity by ad hoc methods. In this paper, we study the accuracy of estimates of four 'target variables': time-integrated activity coefficient, time of maximum activity, maximum activity, and effective half-life in the gland. Clinical data from 41 patients who underwent (131)I therapy for Graves' disease at the University Hospital in Pisa, Italy, are used for analysis. The radioiodine kinetics are described using a nonlinear mixed-effects model. The distributions of the target variables in the patient population are characterized. Using minimum root mean squared error as the criterion, optimal 1-, 2-, and 3-point sampling schedules are determined for estimation of the target variables, and probabilistic bounds are given for the errors under the optimal times. An algorithm is developed for computing the optimal 1-, 2-, and 3-point sampling schedules for the target variables. This algorithm is implemented in a freely available software tool. Taking into consideration (131)I effective half-life in the thyroid and measurement noise, the optimal 1-point time for time-integrated activity coefficient is a measurement 1 week following the tracer dose. Additional measurements give only a slight improvement in accuracy.
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Affiliation(s)
- S Merrill
- Department of Mechanical & Industrial Engineering, University of Massachusetts, Amherst, MA 01003, USA
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Sverdlov A, Ngo D, Chirkov Y, Horowitz J. Insight into Retardation of Aortic Stenosis: A Therapeutic Role for ACE Inhibitors? Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.511] [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: 11/29/2022]
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Carrington M, Stewart S, Marwick T, Davidson P, Macdonald P, Horowitz J, Krum H, Newton P, Reid C. Which Heart Failure Intervention is Most Cost-effective & Consumer Friendly in Reducing Hospital Care? Results from the Multicentre Randomised WHICH? Trial. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.195] [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: 10/18/2022]
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Nguyen T, Unger S, Horowitz J. Changes in Cardiac Denervation Independent of Changes in Systolic Function During Follow-up in CHF Patients. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.150] [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: 10/18/2022]
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Lee KJ, Ehrenpreis ED, Greenberg J, Yang GY, Horowitz J. Mesenteric panniculitis following colonoscopy, polypectomy, and epinephrine injection. Endoscopy 2010; 42 Suppl 2:E44-5. [PMID: 20157883 DOI: 10.1055/s-0029-1215259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- K J Lee
- Division of Internal Medicine, Northwestern University, Feinberg School of Medicine, Chicago, Illinois 60611, USA.
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Neil C, Kucia A, Nguyen H, Sverdlov A, Chan A, Dautov R, Mohasseb I, Selvanayagam J, Arstall M, Zeitz C, Beltrame J, Horowitz J. Relationship Between Precipitant Stressor and Timing of Clinical Diagnosis in Tako-Tsubo Cardiomyopathy. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.547] [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: 10/19/2022]
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Kucia A, Neil C, Nguyen T, Beltrame J, Arstall M, Horowitz J. Evolution of ECG Changes in Tako Tsubo Cardiomyopathy: Arrhythmias First, QT Prolongation Later? Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sverdlov A, Ngo D, Nightingale A, Rajendran S, Ritchie R, Frenneaux M, Horowitz J. Relationship between LV Mass and Diastolic Function is Independent of NO Generation. Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.790] [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: 11/16/2022]
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Adams J, Hakim EW, Hakim DJ, Myers BA, Horowitz J. A Critical Analysis of Existing Evidence on the Management of a Wound with Malignant Desmoplastic Melanoma and Neurofibromatosis: A Case Report. Rehabilitation Oncology 2009. [DOI: 10.1097/01893697-200927010-00013] [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: 11/25/2022]
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Horowitz J, Jarzynski C. Comment on "Failure of the work-Hamiltonian connection for free-energy calculations". Phys Rev Lett 2008; 101:098901-098902. [PMID: 18851665 DOI: 10.1103/physrevlett.101.098901] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Indexed: 05/26/2023]
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Shapiro W, Martinez C, Charytan C, Horowitz J, Tharpe D, Droge J, Ling X, Belozeroff V, Goodman W, Block G, Sprague S. 240: Treatment Patterns in Patients Progressing Through Later-Stage Chronic Kidney Disease (CKD): Baseline Data from a Prospective Observational Registry. Am J Kidney Dis 2008. [DOI: 10.1053/j.ajkd.2008.02.250] [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: 11/11/2022]
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Thomas D, Dumont C, Pickup S, Misselwitz B, Zhou R, Horowitz J, Ferrari VA. T1-weighted cine FLASH is superior to IR imaging of post-infarction myocardial viability at 4.7T. J Cardiovasc Magn Reson 2006; 8:345-52. [PMID: 16669177 PMCID: PMC2581493 DOI: 10.1080/10976640500451986] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Data are unavailable for rational selection of pulse sequences to assess postinfarction myocardial viability in rodents at high field strength. We implemented a widely used clinical inversion recovery (IR) sequence at 4.7T and compared the results to a heavily T1-weighted cine FLASH sequence (T1-CF) for assessment of infarction size. MATERIALS AND METHODS Eleven infarcted rats were examined within 24 h of infarction after injection of Gadophrin-3 contrast agent. Images were acquired using both pulse sequences and a standard cine (SC) sequence. Estimates of infarct size were compared to TTC. Global LV function was compared between the T1-CF and SC sequences. RESULTS SNR, relative SNR, and CNR for the infarcted and normal myocardium were significantly greater for the IR sequence. Infarction size was overestimated by both sequences, but correlated highly and showed very close agreement with TTC. Global function revealed no significant differences between T1-CF and SC. CONCLUSION Both IR and T1-CF produced reliable results for assessment of infarction size at 4.7T. While the IR sequence delivers better overall SNR and CNR, the T1-CF allows concomitant assessment of global cardiac function with a much shorter acquisition time.
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Affiliation(s)
- D Thomas
- Department of Radiology and Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
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Gilbert MR, Gaupp P, Liu V, Conrad C, Colman H, Groves M, Puduvalli V, Levin V, Hsu S, Horowitz J, Yung W. A phase I study of temozolomide (TMZ) and the farnesyltransferase inhibitor (FTI), lonafarnib (Sarazar, SCH66336) in recurrent glioblastoma. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.1556] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
1556 Background: Farnesylation is essential for the post-translational modification of several proteins that play a role in cell proliferation and growth. FTIs demonstrate antiproliferative effects in a variety of tumor cell lines and xenograft models and enhanced efficacy by combining lonafarnib with TMZ compared with TMZ alone. Clinical studies show that dose-intense TMZ may have better efficacy then conventional dosing (Wick, Neurology 2004). Objective: Determine the maximum tolerated dose of lonafarnib when combined with a dose-intensified schedule of TMZ. Eligibility criteria: Histologically proven GBM; evidence of relaspe or progression; up to 2 prior chemotherapy regimens, prior TMZ permitted; KPS ≥ 60. No enzyme-inducing anticonvulsants. Methods: TMZ was given at 150 mg/m2 days 1–7 and 15–21; lonafarnib escalated by cohort: 100 mg BID, 150 mg BID, 200 mg BID on days 8–14 and 22–28 of a 28-day cycle. Response: Toxicity measured after cycle 1 using NCI CTCAE v3. Patient (pt)accrual used a 3 + 3 design. Response was evaluated q2 cycles. Standard response criteria (MacDonald) were used. Results: 15 patients were accrued. Median age 47 yrs; median KPS 90. M:F ratio was 11:4. No DLTs in any dose cohort, a pt (cohort 1) died day 29 of unrelated cardiac disease. 4 pts demonstrated partial response, all with prior TMZ failure, 3 pts showed prolonged stable disease. 6-month PFS rate estimated at 33%, median PFS 14 weeks. Treatment was well tolerated: 1 episode each of grade 3 diarrhea, esophagitis, fatigue and hypokalemia; 3 episodes of grade 3/4 leukopenia, 2 episodes of grade 3/4 neutropenia, and 2 episodes of grade 4 thrombocytopenia. Seven pts had grade 3/4 lymphopenia, some with persistant lymphopenia from prior TMZ. 1 pt had grade 4 pneumonitis of uncertain etiology. Conclusions: The alternating week schedule of TMZ/lonafarnib was well tolerated. Preliminary results suggest anti-tumor activity even in pts who had failed prior TMZ. It is not certain whether this activity is due to the dose-intensified TMZ or the treatment combination. Studies are planned to evaluate potential predictors of response (i.e MGMT gene promoter methylation) and expand the trial to obtain pharmacokinetic and additional efficacy data. [Table: see text]
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Affiliation(s)
- M. R. Gilbert
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - P. Gaupp
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - V. Liu
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - C. Conrad
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - H. Colman
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - M. Groves
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - V. Puduvalli
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - V. Levin
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - S. Hsu
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - J. Horowitz
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
| | - W. Yung
- M. D. Anderson Cancer Center, Houston, TX; Schering-Plough Research Institute, Kenilworth, NJ
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Thomas D, Horowitz J, Bal H, Araujo L, Acton P, Dumont C, Misselwitz B, Ferrari VA. Nichtinvasive Quantifizierung des akuten Myokardinfarktes in einem Kleintiermodell: MRT vs. SPECT vs. PET. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941008] [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: 10/20/2022]
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Gerlic M, Horowitz J, Horowitz S. Mycoplasma fermentans inhibits tumor necrosis factor alpha-induced apoptosis in the human myelomonocytic U937 cell line. Cell Death Differ 2005; 11:1204-12. [PMID: 15286682 DOI: 10.1038/sj.cdd.4401482] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 11/09/2022] Open
Abstract
Mycoplasma fermentans (M. fermentans) was shown to be involved in the alteration of several eukaryotic cell functions (i.e. cytokine production, gene expression), and was suggested as a causative agent in arthritic diseases involving impaired apoptosis. We investigated whether M. fermentans has a pathogenic potential by affecting tumor necrosis factor (TNF)alpha-induced apoptosis in the human myelomonocytic U937 cell line. A significant reduction in the TNFalpha-induced apoptosis (approximately 60%) was demonstrated upon either infection with live M. fermentans or by stimulation with non-live M. fermentans. To investigate the mechanism of M. fermentans antiapoptotic effect, the reduction of mitochondrial transmembrane potential (DeltaPsim) and the protease activity of caspase-8 were measured. In the infected cells, the reduction of DeltaPsim was inhibited (approximately 75%), and an approximately 60% reduction of caspase-8 activity was measured. In conclusion, M. fermentans significantly inhibits TNFalpha-induced apoptosis in U937 cells, and its effect is upstream of the mitochondria and upstream of caspase-8.
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Affiliation(s)
- M Gerlic
- Faculty of Health Sciences, Department of Microbiology and Immunology, Soroka University Medical Center, Ben-Gurion University, Beer-Sheva, Israel
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