David Muggeridge1, Jennifer Dodd2, Mark D Ross3. 1. School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom; Institute of Health Research & Innovation, Division of Biomedical Science, University of the Highlands and Islands, Inverness, United Kingdom. 2. School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom. 3. School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom. Electronic address: M.Ross@napier.ac.uk.
Abstract
BACKGROUND AND AIMS: Circulating progenitor cells (CPCs) play an important role in vascular repair and can influence cardiovascular (CV) health and longevity. Exercise is known to modulate these cells via mobilization from the bone marrow. The primary aims of this study were to evaluate the association of CPCs with mortality and explore the association between physical activity (PA) and CPCs. METHODS: 1751 individuals from the Framingham Offspring cohort (66 ± 9 years [40-92 years], 54% female) were included in the study. CPCs (CD34+, CD34+CD133+, CD34+CD133+KDR+) were measured by flow cytometry. Multivariable Cox regression analyses were performed to investigate relationship of CPCs with future CV event and mortality. Multivariate regression analyses were performed to determine the relationship between self-reported PA and CPC counts. RESULTS: Following adjustment for standard risk factors, there was an inverse association between CD34+ CPCs and all-cause mortality (hazard ratio (HR) per unit increase in CD34+, 0.79; 95% CI 0.64-0.98, p = 0.036). CD34+CD133+ CPCs were inversely associated with CV mortality (HR 0.63, 95% CI 0.44-0.91, p = 0.013). Associations of CD34+ and CD34+CD133+ with mortality were strongest in participants with pre-existing CVD. PA was associated with CD34+ CPCs only in CVD participants (PA Index: β = 0.176, p = 0.003; moderate-to-vigorous [MVPA]: β = 0.159, p = 0.007). This relationship was maintained after adjustment for confounding variables. CONCLUSIONS: A higher number of CD34+ and CD34+ CD133+ CPCs was inversely associated with all-cause and CV mortality. These associations were strongest in participants with CVD. PA is independently associated with CD34+ CPCs in individuals with CVD only, suggestive of greater benefit for this population group.
BACKGROUND AND AIMS: Circulating progenitor cells (CPCs) play an important role in vascular repair and can influence cardiovascular (CV) health and longevity. Exercise is known to modulate these cells via mobilization from the bone marrow. The primary aims of this study were to evaluate the association of CPCs with mortality and explore the association between physical activity (PA) and CPCs. METHODS: 1751 individuals from the Framingham Offspring cohort (66 ± 9 years [40-92 years], 54% female) were included in the study. CPCs (CD34+, CD34+CD133+, CD34+CD133+KDR+) were measured by flow cytometry. Multivariable Cox regression analyses were performed to investigate relationship of CPCs with future CV event and mortality. Multivariate regression analyses were performed to determine the relationship between self-reported PA and CPC counts. RESULTS: Following adjustment for standard risk factors, there was an inverse association between CD34+ CPCs and all-cause mortality (hazard ratio (HR) per unit increase in CD34+, 0.79; 95% CI 0.64-0.98, p = 0.036). CD34+CD133+ CPCs were inversely associated with CV mortality (HR 0.63, 95% CI 0.44-0.91, p = 0.013). Associations of CD34+ and CD34+CD133+ with mortality were strongest in participants with pre-existing CVD. PA was associated with CD34+ CPCs only in CVDparticipants (PA Index: β = 0.176, p = 0.003; moderate-to-vigorous [MVPA]: β = 0.159, p = 0.007). This relationship was maintained after adjustment for confounding variables. CONCLUSIONS: A higher number of CD34+ and CD34+ CD133+ CPCs was inversely associated with all-cause and CV mortality. These associations were strongest in participants with CVD. PA is independently associated with CD34+ CPCs in individuals with CVD only, suggestive of greater benefit for this population group.
Authors: Paul Philipp Heinisch; Corina Bello; Maximilian Y Emmert; Thierry Carrel; Martina Dreßen; Jürgen Hörer; Bernhard Winkler; Markus M Luedi Journal: Cells Date: 2022-05-18 Impact factor: 7.666
Authors: Roberto Scicali; Giuseppe Mandraffino; Michele Scuruchi; Alberto Lo Gullo; Antonino Di Pino; Viviana Ferrara; Carmela Morace; Caterina Oriana Aragona; Giovanni Squadrito; Francesco Purrello; Salvatore Piro Journal: Biomedicines Date: 2022-07-15