Circulating hematopoietic progenitor cells in runners

Maria Rosaria Bonsignore, Giuseppe Morici, Pietro Abate, Maria R. Bonsignore, Lucia Cascio, Maria Gioia, Giuseppe Insalaco, Alessandra Santoro, Giuseppe Insalaco, Mirella Profita, A. Maurizio Vignola, Anna Bonanno, Ignazio Majolino, Franco Mirabella, Ugo Testa, James C. Hogg, Maria Pagano

Risultato della ricerca: Articlepeer review

99 Citazioni (Scopus)

Abstract

Because endurance exercise causes release of mediators and growth factors active on the bone marrow, we asked whether it might affect circulating hematopoietic progenitor cells (HPCs) in amateur runners [n = 16, age: 41.8 ± 13.5 (SD) yr, training: 93.8 ± 31.8 km/wk] compared with sedentary controls (n = 9, age: 39.4 ± 10.2 yr). HPCs, plasma cortisol, interleukin (IL)-6, granulocyte colony-stimulating factor (G-CSF), and the growth factor fms-like tyrosine kinase-3 (flt3)-ligand were measured at rest and after a marathon (M; n = 8) or half-marathon (HM; n = 8). Circulating HPC counts (i.e., CD34+ cells and their subpopulations) were three- to fourfold higher in runners than in controls at baseline. They were unaffected by HM or M acutely but decreased the morning postrace. Baseline cortisol, flt3-ligand, IL-6, and G-CSF levels were similar in runners and controls. IL-6 and G-CSF increased to higher levels after M compared with HM, whereas cortisol and flt3-ligand increased similarly postrace. Our data suggest that increased HPCs reflect an adaptation response to recurrent, exercise-associated release of neutrophils and stress and inflammatory mediators, indicating modulation of bone marrow activity by habitual running.
Lingua originaleEnglish
pagine (da-a)1691-1697
Numero di pagine7
RivistaJournal of Applied Physiology
Volume93
Stato di pubblicazionePublished - 2002

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2700.2737???

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