川芎嗪对急性放射损伤小鼠骨髓细胞粘附分子作用研究

为探讨急性放射损伤小鼠骨髓细胞粘附分子表达及川芎嗪对其影响，将２７只昆明小鼠平均分为３组，正常组，急性放射损伤对照组，川芎嗪组。将对照组及川芎嗪组习用８．０ＧＹ ＾６０Ｃｏγ射线照射后，分别胃饲生理盐水及２５ｍｇ／ｍｌ川芎嗪注射液０．２ｍｌ／只，每天２次，连续天，第７天用流式细胞仪检测所有小鼠骨髓单个核细胞ＣＤ４９ｄ、ＣＤ４９ｃ的表达１的表达显著低于正常组（Ｐ〈０．０１，Ｐ〈０．００１），川芎唪组     

川芎嗪对急性放射损伤小鼠骨髓细胞粘附分子作用研究

为探讨急性放射损伤小鼠骨髓细胞粘附分子表达及川芎嗪对其影响，将27只昆明小鼠平均分为3组：正常组，急性放射损伤对照组，川芎嗪组。将对照组及川芎嗪组小鼠用8．0Gy60Coγ射线照射后，分别胃饲生理盐水及25mg／ml川芎嗪注射液0．2ml／只，每d2次，连续6d。第7d用流式细胞仪检测所有小鼠骨髓单个核细胞CD49d、CD49e的表达水平，用免疫组织化学SABC方法检测骨髓基质细胞VCAM－1的表达、结果发现急性放射损伤对照组CD49d、VCAM－1的表达显著低于正常组（P＜0．01，P＜0．001），川芎嗪组CD49d、CD49e、VCAM－1的表达均显著高于对照组（P＜0．01，P＜0．001），且CD49d、CD49e高于正常组。结果显示川芎嗪能增强急性放射损伤小鼠骨髓造血细胞和基质细胞粘附分子的表达，有利于造血细胞的增生。     

常用活血化瘀中药对急性放射损伤小鼠骨髓微环境及其供氧的影响

给昆明小鼠8Gy60Coγ射线照射后，立即腹腔注射100％复方活血汤注射液（每ml含生药1g）0．2ml／只，每d2次，连续10d。分别于照射后第3、7、14d测定活体原位尺骨骨髓氧分压，观察相同部位骨髓切片组织学。结果表明，常用活血化瘀中药能促进急性放射损伤小鼠骨髓微血管恢复、增生，扩张其面积，使骨髓氧分压明显增高，增加骨髓微环境供氧，促进造血细胞增生。     

川芎嗪对大剂量化疗小鼠骨髓基质细胞损伤的保护作用

目的：观察川芎嗪对大剂量甲氨喋呤（MTX）化疗所致骨髓基质细胞（BMSC）损伤的保护作用及其量效关系。方法：建立大剂量MTX化疗损伤BMSC的小鼠模型后，按每千克体重腹腔注射川芎嗪0mg（对照组）、20mg（Ⅰ组）、40mg(Ⅱ组），1次／d,第21天采取骨髓细胞进行体外BMSC培养，成纤维细胞集落（CFU－F）计数，BMSC层粘附率测定和BMSC层上造血细胞混合集落培养，结果：BMSC生长，CFU－F计数，BMSC层粘附率，BMSC层上造血细胞混合集落数目均表现为Ⅱ组＞Ⅰ组＞对照组（P＜0．05，P＜0．01）。结论：川芎嗪对大剂量MTX引起的BMSC损伤有明显的保护作用，且呈剂量依赖性。     

刺五加注射液对放射损伤小鼠骨髓造血微环境的保护作用

目的　观察刺五加注射液对放射损伤小鼠骨髓造血微环境的保护作用。方法　①60 Coγ射线辐射小鼠建立骨髓微血管放射损伤模型 ;②取 6周龄左右雌性小鼠随机分为正常、模型、模型 刺五加注射液低剂量、模型 刺五加注射液高剂量和模型 复方丹参注射液 5组 ,采用分光光度计法分别测定提取的各组小鼠股骨骨髓血红蛋白溶液标本的光密度(OD)值 ;鼠尾采血测定外周血红细胞、白细胞数量和血红蛋白含量 ;并分别观测骨髓毛细动脉根数、面积和骨髓造血组织容量百分率。结果　刺五加注射液能明显降低放射损伤小鼠骨髓血红蛋白含量、提高外周血红细胞和白细胞的数量以及增加骨髓毛细动脉根数、面积和骨髓造血组织容量百分率。结论　刺五加注射液能明显修复放射损伤小鼠骨髓微血管 ,保护骨髓造血微环境     

5．0 Gy放射损伤对小鼠早期骨髓造血基质细胞周期及其DNA含量的影响

取５．０Ｇｙγ射线照射后３ｄ和７ｄ的小鼠骨髓体外液体培养１４ｄ和２１ｄ，显示骨髓基质细胞仍能贴壁生长，但骨髓基质细胞集落（ＣＦＵ－Ｆ）数量显著低于正常，照后７ｄ的ＣＦＵ－Ｆ数量虽比照后３ｄ的ＣＦＵ－Ｆ数量有所增加，但恢复缓慢；延长培养时间，显示照射鼠的骨髓基质细胞增殖受抑。流式细胞仪检测结果表明Ｇ２＋Ｍ期细胞和ＤＮＡ含量显著低于正常对照组；随着照后时间的延长，Ｓ、Ｇ２＋Ｍ期含量有所恢复，但仍显著低于正常对照组。说明骨髓造血基质细胞具有较高的辐射敏感性且对辐射损伤持续较久。     

放射损伤对外源骨髓间充质干细胞迁徙定植的影响

 【目的】 研究机体中枢神经系统受放射损伤时骨髓间充质干细胞(MSCs)的迁徙定植特性的改变,从而为应用MSCs治疗中枢神经系统放射损伤提供理论和实验依据? 【方法】用8周龄SD大鼠接受22GyX线照射制作枢神经系统放射损伤模型;从GFP鼠抽取骨髓,分离和扩增MSCs?中枢神经系统受放射损伤的SD大鼠4个月后予静脉输注GFP-MSCs?于移植后几个时间点取脑?骨髓?肝?脾等做冰冻切片,用双光子共聚焦红外脉冲激光显微镜检测GFP-MSCs? 【结果】 在最早24 h内实验组和对照组的骨髓中检测到外源性GFP阳性细胞,至第7天后实验组骨髓中GFP阳性细胞显著多于对照组?脑内第1天未检测到外源性GFP阳性细胞,第4天后中枢神经系统受放射损伤的SD大鼠,脑组织检测到带绿色荧光的外源性GFP阳性细胞;而对照组脑内一直未检测到带绿色荧光的外源性MSCs?实验组和对照组脾脏在输注MSCs后第1天即检测到大量GFP阳性细胞,并持续存在,第21天实验组GFP阳性细胞较对照组减少?【结论】 在放射损伤条件下外源性MSCs可透过血脑屏障到达脑组织,中枢神经系统放射损伤可诱导外源性MSCs向脑组织迁徙定植?     

放射损伤对外源骨髓间充质干细胞迁徙定植的影响

【目的】研究机体中枢神经系统受放射损伤时骨髓间充质干细胞（MSCs）的迁徙定植特性的改变,从而为应用MSCs治疗中枢神经系统放射损伤提供理论和实验依据。【方法】用8周龄SD大鼠接受22GyX线照射制作枢神经系统放射损伤模型;从GFP鼠抽取骨髓,分离和扩增MSCs。中枢神经系统受放射损伤的SD大鼠4个月后予静脉输注GFP-MSCs。于移植后几个时间点取脑、骨髓、肝、脾等做冰冻切片,用双光子共聚焦红外脉冲激光显微镜检测GFP-MSCs。【结果】在最早24h内实验组和对照组的骨髓中检测到外源性GFP阳性细胞,至第7天后实验组骨髓中GFP阳性细胞显著多于对照组。脑内第1天未检测到外源性GFP阳性细胞,第4天后中枢神经系统受放射损伤的SD大鼠,脑组织检测到带绿色荧光的外源性GFP阳性细胞;而对照组脑内一直未检测到带绿色荧光的外源性MSCs。实验组和对照组脾脏在输注MSCs后第1天即检测到大量GFP阳性细胞,并持续存在,第21天实验组GFP阳性细胞较对照组减少。【结论】在放射损伤条件下外源性MSCs可透过血脑屏障到达脑组织,中枢神经系统放射损伤可诱导外源性MSCs向脑组织迁徙定植。     

Effect of Ligustrazine on Bone Marrow Microenvironment and Signal Transducti on Path in Irradiation Injured Mice

Ｗｅｈａｖｅｒｅｐｏｒｔｅｄ ｐｒｅｖｉｏｕｓｌｙｔｈａｔｌｉｇｕｓｔｒａｚｉｎｅｃｏｕｌｄｐｒｏｍｏｔｅｈｅｍａｔｏｐｏｉｅｓｉｓｔｈｒｏｕｇｈｉｍｐｒｏｖｉｎｇｂｏｎｅｍａｒｒｏｗｍｉｃｒｏｅｎｖｉｒｏｎｍｅｎｔａｎｄｅｎｈａｎｃｉｎｇａｄｈｅｓｉｖｅ     

Effects of Ligustrazine on Bone Marrow Microvessel Systemin the Early Period of Acute Radiation Injury in Mice

Ithasbeenprovedbymanystudlesthatthedifferent1ationanddevelopmentofthehematopoieticcellsdependonthesup-portandregulationofbonemarr0wmi-croenvironment,inwhichthevascularsys-temisanimp0rtantpart.Kn0speetalre-portedthatafterhigh-doseirradiationde-stroyedthehematopoieticcellsandthemi-crovesselsysteminbonemarrow,there-coveryofvascularsystemwasessentialforthehematopoiesisrehabilitatioin[l.2].There-fore,itisofgreatsignificancetostudytheeffects0fLigustrazine,akind0fs0called"blood-activatingandstasis-el…     

Study on the effect of ligustrazine on hematopoietic reconstitution in bone marrow transplantation mice

Hematopoietic reconstitution after bone marrowtransplantation is a complicated process CXCchemokines and their receptors play important rolesin this process. One of these receptors, CXCR4 expresses on hematopoietic stem cells, and is now takenas a "homing factor" in hematopoietic reconstitu--'tionll' 2]. Ligustrazine can protect the bone marrowmicroenvironment after irradiation or immune damage[', 4]. We established allogenic bone marrow transplantation mice models and explored the effects …     

Effects of Ligustrazine on Expression of Bone Marrow Heparan Sulfates in Syngeneic Bone Marrow Transplantation Mice

Hematopoietic reconstitution after bone marrowtransplantation (BMT ) is a complicated process,which concerns notonly with the quality and quanti-ty of hematopoietic stem cells(HSC) ,but also withthe recovery of hematopoietic inducing microenviron-ment (HIM) .The contactof HSC and HIM,whichregulates the proliferation,differentiation and self-maintenance of HSC,is critical for hematopoietic re-constitution.Heparan sulfates (HS) are a kind of gly-cosaminoglycans macromolecules composed of…     

Enhancing Effects of Ligustrazine on Expression of CD31 and Hematopoietic Reconstitution in Syngenic Bone Marrow Transplantation of Mice

Summary： The effect of ligustrazine on the expression of CD31 in syngenic bone marrow transplantation （BMT） mice was studied. Fifty-six Balb/c mice were divided into 3 groups： normal control group. BMT control group, and ligustrazine treated group. Syngenic BMT mouse models were established according to the literatures. In BMT control group and the ligustrazine treated group, the mice were given respecxively orally 0.2 mL saline and 2 mg ligustrazine twice a day. On the 7th, 14th, and 21st day after BMT, the mice were killed. The expression of CD31 on the surface of bone marrow nuclear cells （BMNC） was detected by flow cytometry. Peripheral blood leukocytes, platelets and BMNC were counted. Histological observation of bone marrow was made. The results showed thai in ligustrazine treated group the peripheral blood leukocylcs, platelets and BMNC counts, and the expression of CD31 on the day 7, 14, 21 after BMT were higher than in BMTcontrol group （P〈0.01 or P〈0.05）. In conclusion, ligustrazine could obviously enhance the CD31 expression on the surface of BMNC after syngcnic BMT in mice, which may be one of the mecha- nisms underlying the ligustrazine accelerating hematopoietic reconstitution in syngenic BMT.     

Effect of Ligustrazine on the Expression of LFA-1, ICAM-1 Following Bone Marrow Transplantation in Mice

Asablood activatingChinesedrug ,ligustrazinecanimprovethemicroenvironmentofbonemarrow ,increasetheadherentfunctionofstromalcellsandpromotethegrowthofhematopoieticcells[1] .Toin terprettherolesthatligustrazineplaysinbonemar rowhematopoieticreconstitutionan…     

The Effects of Ligustrazine on the Expression of bFGF and bFGFR in Bone Marrow in Radiation Injured Mice

Thebonemarrowhematopoiesisinductivemi croenvironmentismadeupofstromalcells ,extracel lularmatrixandmicrangiumsystem .Micrangiumsystemisanimportant partinthebonemarrowhematopoiesisinductivemicroenvironment .Bonemarrowisoneoforganswhicharesensitivetoradia tion .Basicfibroblastgrowthfactor (bFGF)isasin glechain peptide[1] ,whichincludes 15 4aminoacids[2 ] .bFGFbindstoitsspecificreceptor(bFGFR) ,whichstimulatestheproliferationandim migrationofendothelialcells .Itplaysanimportantroleintheembryo…     

川芎嗪对人骨髓成纤维样基质细胞蛋白质表达的影响

目的:研究川芎嗪对人骨髓成纤维样基质细胞增殖及蛋白质表达的影响,探讨川芎嗪补血作用的分子机制。方法:分别采用流式细胞术和蛋白质组学方法测定川芎嗪对人骨髓成纤维样基质细胞周期及蛋白质表达的影响。结果:川芎嗪能促进人骨髓成纤维样基质细胞由G0/G1期进入S期,并使该细胞的9种蛋白质表达上调,6种下调。结论:川芎嗪能促进人骨髓成纤维样基质细胞增殖,作用于多个蛋白质靶点,间接发挥补血作用。     

Effect of ligustrazine on hematopoiesis in bone marrow transplantation mice

Hematopoietic reconstitution after bone marrowtransplantation is a complicated process,whichconcerns with the quality and quantity ofhematopoietic stem cell (HSC) ,and also with therecovery of hematopoietic inducing microenvironment(HIM) .The contact of HSC and HIM is critical forhematopoietic reconstitution.1　MATERIALSAND METHODS1 .1　Materials1 .1 .1　 Animals　　 BALB/c mice of both sexes(clean class,close copulatory series (H- 2 d,MLSb) )were 8— 1 0 weeks old,and 1 7— 2 …