Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine

Introduction: Patients with coronary microvascular dysfunction (CMD) are at increased risk of developing heart failure with preserved ejection fraction (HFpEF). We hypothesized that higher myocardial biomarkers (ultra-high sensitivity cardiac troponin I [u-hs-TnI]) and ventricular dysfunction (N-ter...

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Main Authors: Katherine E. Hampilos, Anum Asif, Puja K. Mehta, Daniel S. Berman, Galen Cook-Wiens, Michael D. Nelson, Carl J. Pepine, C. Noel Bairey Merz, Janet Wei
Format: Article
Language:English
Published: Elsevier 2025-04-01
Series:American Heart Journal Plus
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Online Access:http://www.sciencedirect.com/science/article/pii/S2666602225000163
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author Katherine E. Hampilos
Anum Asif
Puja K. Mehta
Daniel S. Berman
Galen Cook-Wiens
Michael D. Nelson
Carl J. Pepine
C. Noel Bairey Merz
Janet Wei
author_facet Katherine E. Hampilos
Anum Asif
Puja K. Mehta
Daniel S. Berman
Galen Cook-Wiens
Michael D. Nelson
Carl J. Pepine
C. Noel Bairey Merz
Janet Wei
author_sort Katherine E. Hampilos
collection DOAJ
description Introduction: Patients with coronary microvascular dysfunction (CMD) are at increased risk of developing heart failure with preserved ejection fraction (HFpEF). We hypothesized that higher myocardial biomarkers (ultra-high sensitivity cardiac troponin I [u-hs-TnI]) and ventricular dysfunction (N-terminal pro-BNP [NT-proBNP]) would be related to greater ischemia improvement on the late sodium channel inhibitor ranolazine. Methods: We analyzed CMD participants with baseline myocardial biomarkers randomized to ranolazine or placebo (RWISE trial: NCT01342029). Ischemia response was change in global myocardial perfusion reserve index (∆MPRI) or Seattle Angina Questionnaire (∆SAQ). Results: Among 64 randomized participants with u-hs-TnI and 40 with NT-proBNP, higher u-hs-TnI related to improved ∆MPRI (r = 0.26, p = 0.04), but not ∆SAQ (r = 0.03, p = 0.80) on ranolazine. There was no relation with NT-proBNP. Conclusions: These findings suggest that higher u-hs-TnI signals greater ischemia improvement on ranolazine. Further studies evaluating ischemia therapies in CMD are needed to develop potential HFpEF prevention targets.
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spelling doaj-art-d98613eaac944dd9af3f36550a9d28ec2025-08-20T03:02:19ZengElsevierAmerican Heart Journal Plus2666-60222025-04-015210051310.1016/j.ahjo.2025.100513Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazineKatherine E. Hampilos0Anum Asif1Puja K. Mehta2Daniel S. Berman3Galen Cook-Wiens4Michael D. Nelson5Carl J. Pepine6C. Noel Bairey Merz7Janet Wei8Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USADivision of Cardiology, University of Texas San Antonio, San Antonio, TX, USADivision of Cardiology, Emory University School of Medicine, Atlanta, GA, USAS. Mark Taper Foundation Imaging Center, Cedars-Sinai Medical Center, Los Angeles, CA, USABiostatistics and Bioinformatics Research Center, Cedars-Sinai Medical Center, Los Angeles, CA, USADepartment of Kinesiology, University of Texas in Arlington, Arlington, TX, USADivision of Cardiology, University of Florida, Gainesville, FL, USABarbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA; Corresponding author at: Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USA.Barbra Streisand Women's Heart Center, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA, USAIntroduction: Patients with coronary microvascular dysfunction (CMD) are at increased risk of developing heart failure with preserved ejection fraction (HFpEF). We hypothesized that higher myocardial biomarkers (ultra-high sensitivity cardiac troponin I [u-hs-TnI]) and ventricular dysfunction (N-terminal pro-BNP [NT-proBNP]) would be related to greater ischemia improvement on the late sodium channel inhibitor ranolazine. Methods: We analyzed CMD participants with baseline myocardial biomarkers randomized to ranolazine or placebo (RWISE trial: NCT01342029). Ischemia response was change in global myocardial perfusion reserve index (∆MPRI) or Seattle Angina Questionnaire (∆SAQ). Results: Among 64 randomized participants with u-hs-TnI and 40 with NT-proBNP, higher u-hs-TnI related to improved ∆MPRI (r = 0.26, p = 0.04), but not ∆SAQ (r = 0.03, p = 0.80) on ranolazine. There was no relation with NT-proBNP. Conclusions: These findings suggest that higher u-hs-TnI signals greater ischemia improvement on ranolazine. Further studies evaluating ischemia therapies in CMD are needed to develop potential HFpEF prevention targets.http://www.sciencedirect.com/science/article/pii/S2666602225000163Coronary microvascular dysfunctionIschemia and no obstructive coronary artery diseaseRanolazineMyocardial perfusion reserve indexN-terminal pro-BNPUltra-high sensitivity cardiac troponin I
spellingShingle Katherine E. Hampilos
Anum Asif
Puja K. Mehta
Daniel S. Berman
Galen Cook-Wiens
Michael D. Nelson
Carl J. Pepine
C. Noel Bairey Merz
Janet Wei
Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
American Heart Journal Plus
Coronary microvascular dysfunction
Ischemia and no obstructive coronary artery disease
Ranolazine
Myocardial perfusion reserve index
N-terminal pro-BNP
Ultra-high sensitivity cardiac troponin I
title Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
title_full Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
title_fullStr Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
title_full_unstemmed Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
title_short Myocardial biomarkers in coronary microvascular dysfunction: Response to ranolazine
title_sort myocardial biomarkers in coronary microvascular dysfunction response to ranolazine
topic Coronary microvascular dysfunction
Ischemia and no obstructive coronary artery disease
Ranolazine
Myocardial perfusion reserve index
N-terminal pro-BNP
Ultra-high sensitivity cardiac troponin I
url http://www.sciencedirect.com/science/article/pii/S2666602225000163
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