1
|
Chacon Alberty L, Perin EC, Willerson JT, Gahremanpour A, Bolli R, Yang PC, Traverse JH, Lai D, Pepine CJ, Taylor DA. Peripheral Blood Biomarkers Associated With Improved Functional Outcome in Patients With Chronic Left Ventricular Dysfunction: A Biorepository Evaluation of the FOCUS-CCTRN Trial. Front Cardiovasc Med 2021; 8:698088. [PMID: 34540912 PMCID: PMC8446350 DOI: 10.3389/fcvm.2021.698088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/26/2021] [Indexed: 11/13/2022] Open
Abstract
Cell therapy trials for heart failure (HF) have shown modest improvement; however, the mechanisms underlying improvement in some patients but not others are not well understood. Although immune cells are important in the course of HF, our understanding of the immune processes in HF is limited. The objective of this study was to evaluate associations between temporal changes in peripheral blood (PB) cell subpopulations and improved outcome in patients with chronic ischemic cardiomyopathy after bone marrow-derived mononuclear cell therapy or placebo in the FOCUS-CCTRN trial. Peripheral blood was collected at days 0, 1, 30, 90, and 180 from consented participants. We used flow cytometry to compare PB populations in patients with the best (cohort 1) or worst functional outcome (cohort 2) in three primary endpoints: left ventricular (LV) ejection fraction, LV end-systolic volume, and maximal oxygen consumption (VO2 max). A linear mixed model was used to assess changes over time in 32 cell populations. The difference between each time point and baseline was calculated as linear contrast. Compared with cohort 2, patients who improved (cohort 1) had a higher frequency of CD45+CD19+ B cells at days 0, 1, 90, and 180. CD11B+ cells increased over baseline at day 1 in both cohorts and remained higher in cohort 2 until day 30. CD45+CD133+ progenitor cells decreased over baseline at day 30 in cohort 1. We identified specific cell subpopulations associated with improved cardiac function in patients with chronic LV dysfunction. These findings may improve patient selection and prediction of outcomes in cell therapy trials.
Collapse
Affiliation(s)
| | - Emerson C Perin
- Stem Cell Center, Texas Heart Institute, Houston, TX, United States
| | | | - Amir Gahremanpour
- Hospital Corporation of America-Houston Heart, Houston, TX, United States
| | - Roberto Bolli
- School of Medicine, University of Louisville, Louisville, KY, United States
| | - Phillip C Yang
- Stanford University School of Medicine, Stanford, CA, United States
| | - Jay H Traverse
- Minneapolis Heart Institute Foundation at Abbott Northwestern Hospital and University of Minnesota School of Medicine, Minneapolis, MN, United States
| | - Dejian Lai
- UTHealth School of Public Health, Houston, TX, United States
| | - Carl J Pepine
- University of Florida College of Medicine, Gainesville, FL, United States
| | - Doris A Taylor
- Regenerative Medicine Department, Texas Heart Institute, Houston, TX, United States
| |
Collapse
|
2
|
Daoud D, Chacon Alberty L, Wei Q, Hochman Mendez C, Virk MHM, Mase J, Jindra P, Cusick M, Choi H, Debolske N, Sampaio LC, Taylor DA, Loor G. Incidence of primary graft dysfunction is higher according to the new ISHLT 2016 guidelines and correlates with clinical and molecular risk factors. J Thorac Dis 2021; 13:3426-3442. [PMID: 34277039 PMCID: PMC8264697 DOI: 10.21037/jtd-20-3564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 04/14/2021] [Indexed: 12/18/2022]
Abstract
Background Primary graft dysfunction (PGD) is the most important determinant of morbidity and mortality after lung transplantation, but its definition has evolved over the past decade. The implications of this refinement in clinical definition have not been evaluated. In this single-center study, we compared PGD incidence, risk factors, and outcomes using the 2005 and the updated-2016 International Society of Heart and Lung Transplantation guidelines for PGD grading in lung transplant patients. Methods In this retrospective study, we extracted data from the medical records of 127 patients who underwent lung transplantation between 1/1/2016–12/31/2018. PGD was defined as PGD3 present at 48 and/or 72 hours post-reperfusion. We used the 2005 and the updated 2016 guidelines to assess clinical risk factors, outcomes, and baseline biomarkers for PGD. Results On the basis of the 2016 and 2005 guidelines, we identified PGD in 37% and 26% of patients, respectively. PGD was significantly associated with extracorporeal life support, large body mass index, and restrictive lung disease using the 2016 but not the 2005 guidelines. Based on the 2016 guidelines, pretransplant levels of several biomarkers were associated with PGD; using the 2005 guidelines, only increased interleukin-2 levels were significantly associated with PGD. No preoperative biomarkers were associated with PGD using either guidelines after adjusting for clinical variables. Postoperative morbidity and 1-year mortality were similar regardless of guidelines used. Conclusions Our findings suggest that refinements in the PGD scoring system have improved the detection of graft injury and associated risk factors without changing its ability to predict postoperative morbidity and mortality.
Collapse
Affiliation(s)
- Daoud Daoud
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | | | - Qi Wei
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | - Camila Hochman Mendez
- Department of Regenerative Medicine Research, Texas Heart Institute, Houston, TX, USA
| | - Muhammad Hassan Masood Virk
- Center for Antimicrobial Resistance and Microbial Genomics (CARMiG), Department of Internal Medicine, Division of Infectious Diseases, University of Texas Health Science Centre at Houston, Houston, TX, USA
| | - Jonathan Mase
- Department of Regenerative Medicine Research, Texas Heart Institute, Houston, TX, USA
| | - Peter Jindra
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | - Matthew Cusick
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | - Hyewon Choi
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | - Natalie Debolske
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| | - Luiz C Sampaio
- Department of Advanced Cardiopulmonary Therapies and Transplantation, University of Texas Health Science Center at Houston, Houston, TX, USA
| | | | - Gabriel Loor
- Michael E DeBakey Department of Surgery, Division of Cardiopulmonary Transplantation and Mechanical Circulatory Support, Baylor College of Medicine, Houston, TX, USA
| |
Collapse
|