Carreras Alba, Almendros Isaac, Acerbi Irene, Montserrat Josep M, Navajas Daniel, Farré Ramon
Unitat de Biofisica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona--IDIBAPS, Barcelona, Spain.
Sleep. 2009 Jan;32(1):117-9.
To investigate whether noninvasive application of recurrent airway obstructions induces early release of mesenchymal stem cells into the circulating blood in a rat model of obstructive sleep apnea.
Prospective controlled animal study.
University laboratory.
Twenty male Sprague-Dawley rats (250-300 g).
A specially designed nasal mask was applied to the anesthetized rats. Ten rats were subjected to a pattern of recurrent obstructive apneas (60 per hour, lasting 15 seconds each) for 5 hours. Ten anesthetized rats were used as controls.
Mesenchymal stem cells from the blood and bone marrow samples were isolated and cultured to count the total number of colony-forming unit fibroblasts (CFU-F) of adherent cells after 9 days in culture. The number of CFU-F from circulating blood was significantly (P = 0.02) higher in the rats subjected to recurrent obstructive apneas (5.00 +/- 1.16; mean +/- SEM) than in controls (1.70 +/- 0.72). No significant (P = 0.54) differences were observed in CFU-F from bone marrow.
Application of a pattern of airway obstructions similar to those experienced by patients with sleep apnea induced an early mobilization of mesenchymal stem cells into circulating blood.
在阻塞性睡眠呼吸暂停大鼠模型中,研究反复气道阻塞的无创应用是否会诱导间充质干细胞早期释放到循环血液中。
前瞻性对照动物研究。
大学实验室。
20只雄性斯普拉格-道利大鼠(250 - 300克)。
将一个特别设计的鼻罩应用于麻醉的大鼠。10只大鼠接受反复阻塞性呼吸暂停模式(每小时60次,每次持续15秒),持续5小时。10只麻醉大鼠作为对照。
分离并培养血液和骨髓样本中的间充质干细胞,以计算培养9天后贴壁细胞的成纤维细胞集落形成单位(CFU - F)总数。反复阻塞性呼吸暂停的大鼠循环血液中的CFU - F数量(5.00 +/- 1.16;平均值 +/- 标准误)显著高于对照组(1.70 +/- 0.72)(P = 0.02)。骨髓中的CFU - F未观察到显著差异(P = 0.54)。
应用类似于睡眠呼吸暂停患者所经历的气道阻塞模式可诱导间充质干细胞早期动员到循环血液中。