%0期刊文章%van eeden,sf%a lawrence,e%a sato,y%a kitagawa,y%a hogg,jc%t中性粒细胞从骨髓中释放出颗粒细胞菌落刺激因子刺激肺微粒的肺细胞刺激因子,但是是慢速迁移%d 2000%J欧洲呼吸杂志%p 1079-1086%V 15%n 6%X炎症介质(例如粒细胞菌落刺激因子(G-CSF)释放多形核白细胞(PMNL))的炎症介质(G-CSF)释放了骨骨髓。该生长因子用于促进宿主对感染的反应,但其对白细胞在炎症部位的行为的影响尚不清楚。这项研究检查了G-CSF在链球菌肺炎模型中从骨髓中释放出的PMNL的隔离和迁移。在兔子中施用人G-CSF(n = 6)或盐水(n = 3)后八个小时,诱导了肺炎肺炎肺炎肺炎肺炎肺炎,然后跟踪动物2小时。胸苷类似物5'-bromo-2'-脱氧尿苷(BRDU)用于在骨髓中标记PMNL(PMNL(BRDU)),并用作骨髓新发布的PMNL标记。使用免疫组织化学鉴定出肺中的PMNL(BRDU)和血液。G-CSF预处理升高了循环PMNL(3.6 +/- 0.4(平均+/- SEM)至8.3 +/- 1x10(9)X L(-1),P <0.05)和PMNL(BRDU)(BRDU)(5.4 +/--2.1至12.5 +/- 3.1%,p <0.05)在8小时内计数,随后2小时肺炎引起的进一步增加。这些计数没有改变对照组。肺的形态计量学研究表明,G-CSF组的肺毛细血管中PMNL的总数增加,并且这些brdu标记的PMNL的百分比高于循环血液(p <0.05)。 In the G-CSF group, only 11.2+/-2.6% of the PMNL that migrated into the airspaces were PMNL(BrdU) compared to 50.8+/-8% PMNL(BrdU) in the pulmonary capillaries. In vitro studies showed PMNL(BrdU) released from the bone marrow by G-CSF are less deformable than unlabelled circulating PMNL (p<0.01). It is concluded that granulocyte colony-stimulating factor treatment causes the marrow to release polymorphonuclear leukocytes that preferentially sequester in lung microvessels but are slow to migrate out of the vascular space into the airspace at the pneumonic site. %U //www.qdcxjkg.com/content/erj/15/6/1079.full.pdf