2026-04-17T06:50:04Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/489722025-12-05T09:25:01Zcom_2072_1057col_2072_478777col_2072_478799col_2072_478917

00925njm 22002777a 4500 dc Viscor Carrasco, Ginés author Javierre Garcés, Casimiro F. author Pagés, Teresa author Ventura i Farré, Josep Lluís author Ricart de Mesones, Antoni author Martin-Henao, Gregorio author Azqueta, Carmen author Segura Cardona, Ramón author 2014-01-16T14:09:56Z 2014-01-16T14:09:56Z 2009-10 2014-01-16T14:09:56Z Background: Our goal was to determine whether short-term intermittent hypoxia exposure, at a level well tolerated by healthy humans and previously shown by our group to increase EPO and erythropoiesis, could mobilizehematopoietic stem cells (HSC) and increase their presence in peripheral circulation. Methods: Four healthy male subjects were subjected to three different protocols: one with only a hypoxic stimulus (OH), another with a hypoxic stimulus plus muscle electrostimulation (HME) and the third with only muscle electrostimulation (OME). Intermittent hypobaric hypoxia exposureconsisted of only three sessions of three hours at barometric pressure 540 hPa (equivalent to an altitude of 5000 m) for three consecutive days, whereas muscular electrostimulation was performed in two separate periods of 25 min in each session. Blood samples were obtained from an antecubital vein on three consecutive days immediately before the experiment and 24 h, 48 h, 4 days and 7 days after the last day of hypoxic exposure. Results: There was a clear increase in the number of circulating CD34+ cells after combined hypobaric hypoxia and muscular electrostimulation. This response was not observed after the isolated application of the same stimuli. Conclusion: Our results open a new application field for hypobaric systems as a way to increase efficiency in peripheral HSC collection. Anoxèmia Cèl·lules mare Hematologia Anoxemia Stem cells Hematology Combined intermittent hypoxia and surface muscle electrostimulation as a method to increase peripheral blood progenitor cell concentration.