http://www.cnr.it/ontology/cnr/individuo/prodotto/ID12315

Circulating hematopoietic progenitor cells in runners. (Articolo in rivista)

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Circulating hematopoietic progenitor cells in runners. (Articolo in rivista) (literal)

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MARIA R. BONSIGNORE,1 GIUSEPPE MORICI,2 ALESSANDRA SANTORO,3 MARIA PAGANO,3 LUCIA CASCIO,3 ANNA BONANNO,1 PIETRO ABATE,1 FRANCO MIRABELLA,1 MIRELLA PROFITA,1 GIUSEPPE INSALACO,1 MARIA GIOIA,3 A. MAURIZIO VIGNOLA,1 IGNAZIO MAJOLINO,3 UGO TESTA,4 AND JAMES C. HOGG5 (2002)
Circulating hematopoietic progenitor cells in runners.
in Journal of applied physiology (1985); American Physiological Society, Bethesda (Stati Uniti d'America)
(literal)

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MARIA R. BONSIGNORE,1 GIUSEPPE MORICI,2 ALESSANDRA SANTORO,3 MARIA PAGANO,3 LUCIA CASCIO,3 ANNA BONANNO,1 PIETRO ABATE,1 FRANCO MIRABELLA,1 MIRELLA PROFITA,1 GIUSEPPE INSALACO,1 MARIA GIOIA,3 A. MAURIZIO VIGNOLA,1 IGNAZIO MAJOLINO,3 UGO TESTA,4 AND JAMES C. HOGG5 (literal)

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1Institute of Respiratory Pathophysiology, National Research Council, and 3Department of Hematology and Laboratory of Clinical Pathology, Ospedale V. Cervello, 90146 Palermo; 2Department of Experimental Medicine, University of Palermo, 90129 Palermo; and 4Istituto Superiore di Sanita` , 00161 Rome, Italy; and 5University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4 (literal)

Titolo

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. (literal)

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