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Featured researches published by Pamela Hyde.


Circulation | 2010

Health Status After Treatment for Coronary Artery Disease and Type 2 Diabetes Mellitus in the Bypass Angioplasty Revascularization Investigation 2 Diabetes Trial

Maria Mori Brooks; Sheng Chia Chung; Tarek Helmy; William B. Hillegass; Jorge Escobedo; Kathryn Melsop; Elaine Massaro; Robert D. McBane; Pamela Hyde; Mark A. Hlatky

Background Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly.Background— Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly. Methods and Results— Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) randomized 2368 patients with type 2 diabetes mellitus and stable ischemic heart disease to (1) prompt revascularization versus medical therapy and (2) insulin sensitization versus insulin provision. Randomization was stratified by the intended method of revascularization, coronary artery bypass graft surgery or percutaneous coronary intervention. The Duke Activity Status Index and RAND Energy, Health Distress, and Self-Rated Health scales were assessed at study entry and annually thereafter; linear mixed models were used to evaluate the effect of randomized treatment on these measures. Health status improved significantly from baseline to 1 year (P<0.001) in each randomized treatment group. Compared with medical therapy, prompt revascularization was associated with significantly greater improvements in Duke Activity Status Index (1.32 points; P<0.001), Energy (1.36 points; P=0.02), and Self-rated Health (1.77 points; P=0.007) but not Health Distress (−0.47; P=0.46). These treatment effects were largely maintained over 4 years of follow-up. The effect of revascularization on the Duke Activity Status Index was significantly larger in the subgroup of patients intended for coronary artery bypass graft surgery compared with the subgroup intended for percutaneous coronary intervention. Health status did not differ significantly on any of the 4 measures between the insulin provision and insulin sensitization strategies. Conclusions— Prompt coronary revascularization was associated with small yet statistically significant improvements in health status compared with initial medical therapy among patients with diabetes mellitus and stable ischemic heart disease. Clinical Trial Registration— http://www.clinicaltrials.gov. Unique identifier: NCT00006305.


Circulation Research | 2017

PreSERVE-AMI: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial of Intracoronary Administration of Autologous CD34+ Cells in Patients with Left Ventricular Dysfunction Post STEMI.

Arshed A. Quyyumi; Alejandro Vasquez; Marc Klapholz; Gary L. Schaer; Ahmed Abdel-Latif; Stephen Frohwein; Timothy D. Henry; Richard A. Schatz; Nabil Dib; Catalin Toma; Charles J. Davidson; Gregory W. Barsness; David M. Shavelle; Martin Cohen; Joseph Poole; Thomas J. Moss; Pamela Hyde; Anna Maria Kanakaraj; Vitaly Druker; Amy Chung; Candice Junge; Robert A. Preti; Robin L. Smith; David J. Mazzo; Andrew L. Pecora; Douglas W. Losordo

Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction⩽48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months (P<0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital (P=0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01495364.Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction≤48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months ( P <0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital ( P =0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: . Unique identifier: [NCT01495364][1]. # Novelty and Significance {#article-title-42} [1]: /lookup/external-ref?link_type=CLINTRIALGOV&access_num=NCT01495364&atom=%2Fcircresaha%2F120%2F2%2F324.atom


Circulation Research | 2017

PreSERVE-AMINovelty and Significance: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial of Intracoronary Administration of Autologous CD34+ Cells in Patients With Left Ventricular Dysfunction Post STEMI

Arshed A. Quyyumi; Alejandro Vasquez; Marc Klapholz; Gary L. Schaer; Ahmed Abdel-Latif; Stephen Frohwein; Timothy D. Henry; Richard A. Schatz; Nabil Dib; Catalin Toma; Charles J. Davidson; Gregory W. Barsness; David M. Shavelle; Martin H. Cohen; Joseph Poole; Thomas Moss; Pamela Hyde; Anna Maria Kanakaraj; Vitaly Druker; Amy Chung; Candice Junge; Robert A. Preti; Robin L. Smith; David J. Mazzo; Andrew Pecora; Douglas W. Losordo

Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction⩽48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months (P<0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital (P=0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01495364.Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction≤48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months ( P <0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital ( P =0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: . Unique identifier: [NCT01495364][1]. # Novelty and Significance {#article-title-42} [1]: /lookup/external-ref?link_type=CLINTRIALGOV&access_num=NCT01495364&atom=%2Fcircresaha%2F120%2F2%2F324.atom


Circulation Research | 2017

PreSERVE-AMINovelty and Significance

Arshed A. Quyyumi; Alejandro Vasquez; Marc Klapholz; Gary L. Schaer; Ahmed Abdel-Latif; Stephen Frohwein; Timothy D. Henry; Richard A. Schatz; Nabil Dib; Catalin Toma; Charles J. Davidson; Gregory W. Barsness; David M. Shavelle; Martin H. Cohen; Joseph Poole; Thomas Moss; Pamela Hyde; Anna Maria Kanakaraj; Vitaly Druker; Amy Chung; Candice Junge; Robert A. Preti; Robin L. Smith; David J. Mazzo; Andrew Pecora; Douglas W. Losordo

Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction⩽48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months (P<0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital (P=0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01495364.Rationale: Despite direct immediate intervention and therapy, ST-segment–elevation myocardial infarction (STEMI) victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization, and death. Objective: To evaluate the safety and bioactivity of autologous CD34+ cell (CLBS10) intracoronary infusion in patients with left ventricular dysfunction post STEMI. Methods and Results: Patients who underwent successful stenting for STEMI and had left ventricular dysfunction (ejection fraction≤48%) ≥4 days poststent were eligible for enrollment. Subjects (N=161) underwent mini bone marrow harvest and were randomized 1:1 to receive (1) autologous CD34+ cells (minimum 10 mol/L±20% cells; N=78) or (2) diluent alone (N=83), via intracoronary infusion. The primary safety end point was adverse events, serious adverse events, and major adverse cardiac event. The primary efficacy end point was change in resting myocardial perfusion over 6 months. No differences in myocardial perfusion or adverse events were observed between the control and treatment groups, although increased perfusion was observed within each group from baseline to 6 months ( P <0.001). In secondary analyses, when adjusted for time of ischemia, a consistently favorable cell dose–dependent effect was observed in the change in left ventricular ejection fraction and infarct size, and the duration of time subjects was alive and out of hospital ( P =0.05). At 1 year, 3.6% (N=3) and 0% deaths were observed in the control and treatment group, respectively. Conclusions: This PreSERVE-AMI (Phase 2, randomized, double-blind, placebo-controlled trial) represents the largest study of cell-based therapy for STEMI completed in the United States and provides evidence supporting safety and potential efficacy in patients with left ventricular dysfunction post STEMI who are at risk for death and major morbidity. Clinical Trial Registration: URL: . Unique identifier: [NCT01495364][1]. # Novelty and Significance {#article-title-42} [1]: /lookup/external-ref?link_type=CLINTRIALGOV&access_num=NCT01495364&atom=%2Fcircresaha%2F120%2F2%2F324.atom


Journal of the American College of Cardiology | 2015

ONE YEAR FOLLOW-UP RESULTS FROM PRESERVE-AMI: A RANDOMIZED, DOUBLE-BLIND, PLACEBO CONTROLLED CLINICAL TRIAL OF INTRACORONARY INFUSION OF AUTOLOGOUS CD34+ CELLS IN PATIENTS WITH LEFT VENTRICULAR DYSFUNCTION POST STEMI

Arshed A. Quyyumi; David M. Shavelle; Timothy D. Henry; Ali E. Denktas; Ahmed Abdel-Latif; Catalin Toma; Gregory W. Barsness; Stephen Frohwein; Richard A. Schatz; Martin H. Cohen; Charles J. Davidson; Nabil Dib; Marc Klapholz; Gary L. Schaer; Alejandro Vasquez; Andrew Pecora; Thomas Moss; Pamela Hyde; Anna Maria Kanakaraj; Le Dich; Vitaly Druker; Candice Junge; Robert A. Preti; Douglas W. Losordo

ST segment Elevation Myocardial Infarction (STEMI) affects 160,000 annually in the US. Guidelines direct immediate revascularization and adjunctive medical therapies. Yet STEMI victims remain at risk for infarct expansion, heart failure, reinfarction, repeat revascularization and death. In pre-


Circulation | 2010

Health Status after Treatment for Coronary Artery Disease and Type 2 Diabetes in the BARI 2D Trial

Maria Mori Brooks; Sheng-Chia Chung; Tarek Helmy; William B. Hillegass; Jorge Escobedo; Kathryn Melsop; Elaine Massaro; Robert D. McBane; Pamela Hyde; Mark A. Hlatky

Background Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly.Background— Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly. Methods and Results— Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) randomized 2368 patients with type 2 diabetes mellitus and stable ischemic heart disease to (1) prompt revascularization versus medical therapy and (2) insulin sensitization versus insulin provision. Randomization was stratified by the intended method of revascularization, coronary artery bypass graft surgery or percutaneous coronary intervention. The Duke Activity Status Index and RAND Energy, Health Distress, and Self-Rated Health scales were assessed at study entry and annually thereafter; linear mixed models were used to evaluate the effect of randomized treatment on these measures. Health status improved significantly from baseline to 1 year (P<0.001) in each randomized treatment group. Compared with medical therapy, prompt revascularization was associated with significantly greater improvements in Duke Activity Status Index (1.32 points; P<0.001), Energy (1.36 points; P=0.02), and Self-rated Health (1.77 points; P=0.007) but not Health Distress (−0.47; P=0.46). These treatment effects were largely maintained over 4 years of follow-up. The effect of revascularization on the Duke Activity Status Index was significantly larger in the subgroup of patients intended for coronary artery bypass graft surgery compared with the subgroup intended for percutaneous coronary intervention. Health status did not differ significantly on any of the 4 measures between the insulin provision and insulin sensitization strategies. Conclusions— Prompt coronary revascularization was associated with small yet statistically significant improvements in health status compared with initial medical therapy among patients with diabetes mellitus and stable ischemic heart disease. Clinical Trial Registration— http://www.clinicaltrials.gov. Unique identifier: NCT00006305.


Circulation | 2010

Health Status After Treatment for Coronary Artery Disease and Type 2 Diabetes Mellitus in the Bypass Angioplasty Revascularization Investigation 2 Diabetes TrialClinical Perspective

Maria Mori Brooks; Sheng-Chia Chung; Tarek Helmy; William B. Hillegass; Jorge Escobedo; Kathryn Melsop; Elaine Massaro; Robert D. McBane; Pamela Hyde; Mark A. Hlatky

Background Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly.Background— Health status is a key outcome for comparing treatments, particularly when mortality does not differ significantly. Methods and Results— Bypass Angioplasty Revascularization Investigation 2 Diabetes (BARI 2D) randomized 2368 patients with type 2 diabetes mellitus and stable ischemic heart disease to (1) prompt revascularization versus medical therapy and (2) insulin sensitization versus insulin provision. Randomization was stratified by the intended method of revascularization, coronary artery bypass graft surgery or percutaneous coronary intervention. The Duke Activity Status Index and RAND Energy, Health Distress, and Self-Rated Health scales were assessed at study entry and annually thereafter; linear mixed models were used to evaluate the effect of randomized treatment on these measures. Health status improved significantly from baseline to 1 year (P<0.001) in each randomized treatment group. Compared with medical therapy, prompt revascularization was associated with significantly greater improvements in Duke Activity Status Index (1.32 points; P<0.001), Energy (1.36 points; P=0.02), and Self-rated Health (1.77 points; P=0.007) but not Health Distress (−0.47; P=0.46). These treatment effects were largely maintained over 4 years of follow-up. The effect of revascularization on the Duke Activity Status Index was significantly larger in the subgroup of patients intended for coronary artery bypass graft surgery compared with the subgroup intended for percutaneous coronary intervention. Health status did not differ significantly on any of the 4 measures between the insulin provision and insulin sensitization strategies. Conclusions— Prompt coronary revascularization was associated with small yet statistically significant improvements in health status compared with initial medical therapy among patients with diabetes mellitus and stable ischemic heart disease. Clinical Trial Registration— http://www.clinicaltrials.gov. Unique identifier: NCT00006305.


Circulation | 2014

Abstract 17457: PreSERVE-AMI: a Randomized, Double-Blind, Placebo-Controlled Clinical Trial of Intracoronary Administration of Autologous CD34+ Cells in Patients with Left Ventricular Dysfunction Post STEMI

Arshed A. Quyyumi; Alejandro Vasquez; Marc Klapholz; Gary L. Schaer; Ken Fujise; Ahmed Abdel-Latif; Robert S Iwaoka; Ali E. Denktas; Roger S. Gammon; Steve Frohwein; Vijaykumar S. Kasi; Michael R. Tamberella; Catalin Toma; Nabil Dib; Tanvir Bajwa; Richard A. Schatz; Timothy D. Henry; Martin Cohen; David M. Shavelle; Gregory W. Barsness; Charles Davidson; Thomas Moss; Pamela Hyde; AnnaMarie Kanakaraj; Vitaly Druker; Le Dich; Jonathan Sackner-Bernstein; Robert A. Preti; Douglas W. Losordo; Andrew Pecora

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Alejandro Vasquez

Huntsville Hospital System

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Catalin Toma

University of Pittsburgh

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David M. Shavelle

University of Southern California

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Gary L. Schaer

Rush University Medical Center

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Nabil Dib

Arizona Heart Institute

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