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…     

川芎嗪对骨髓移植小鼠造血细胞SDF-1表达水平的影响

为探讨川芎嗪对骨髓移植(BMT)后造血重建过程中基质细胞来源因子(SDF-1)的作用,建立了典型同基因BMT小鼠模型,胃饲川芎嗪注射液每次2 mg,2次/d,分别于BMT后第7、14 d计数外周血细胞骨髓单核细胞(BMNC)并测定骨髓组织切片中SDF-1的表达.结果表明川芎嗪组BMT后第7、14 d外周血细胞计数、BMNC计数及骨髓组织切片中SDF-1表达水平均高于BMT组.提示川芎嗪能在骨髓移植造血重建早期促进骨髓基质细胞表达SDF-1,可能是促进BMT后造血干细胞(HSC)回髓、加速造血重建的机制之一.     

放射损伤小鼠骨髓VEGF、CFU-GM、CFU-F的变化及川芎嗪对其影响的研究

目的:探讨放射损伤小鼠骨髓血管内皮细胞生长因子(VEGF)、骨髓粒巨噬细胞集落形成单位(GFU-GM)数和骨髓成纤维细胞集落成单位(CFU-F)的变化意义及川芎嗪对其的影响。方法:健康昆明小鼠经6.0Gy60Coγ照射后,立即喂饲川芎嗪并设对照组和正常组,分别于第3、7、14、21天检测其骨髓VEGF、CFU-GM和CFU-F的变化。结果:照射后第3、7、14 d骨髓VEGF表达水平显著降低,但川芎嗪组高于对照组;随着时间推移骨髓VEGF表达水平逐渐恢复,照射后第21 d川芎嗪组已恢复正常(P>0.05),而照射组仍低于正常组。照射后骨髓CFU-GM和CFU-F明显受到抑制,但川芎嗪组显示了良好的保护作用。结论:放射损伤后小鼠骨髓VEGF的表达变化在造血功能的恢复过程中起重要作用;川芎嗪具有改善骨髓造血功能的作用。     

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 …     

Effects of Ligustrazine on Hematopoiesis in the Early Phase of Bone Marrow Transplantation Mice

the National NaturalScience Foundation(Serial No.3 9870 92 6)sacrificed on the1 st,3rd,5 th,7th,1 0 th,1 5 th,and 2 1 st day after BMT.The marrow from fe-murs was flushed into RPMI- 1 640 medium. BM-NCs from each femur were counted.1 .2 .7Carbon- Mold Preparation of Blood Vessels　　 A colloidal carbon solution( prepared Chineseink,0 .2 ml,2 0 mg/ml in saline) was injected1 -2 min before sacrifice on the1 st,3rd,5 th,7th,1 0 th,1 5 th,2 1 st day after BMT.One femur ofeach mouse was r…     

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…     

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…     

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

Ｗｅｈａｖｅｒｅｐｏｒｔｅｄ ｐｒｅｖｉｏｕｓｌｙｔｈａｔｌｉｇｕｓｔｒａｚｉｎｅｃｏｕｌｄｐｒｏｍｏｔｅｈｅｍａｔｏｐｏｉｅｓｉｓｔｈｒｏｕｇｈｉｍｐｒｏｖｉｎｇｂｏｎｅｍａｒｒｏｗｍｉｃｒｏｅｎｖｉｒｏｎｍｅｎｔａｎｄｅｎｈａｎｃｉｎｇａｄｈｅｓｉｖｅ     

Study on the Protective Effects of Compound Blood-activating Soup on Bone Marrow Hematopoietic Cells in Acute Radiation Injured Mice

ThisprojectwassupportedbyNationalScienceFoundationofChina(No.39670911)andTraditionalChineseMedicineSectionofthePublicHealthDepartmentofHubeiProvince.Ithasbeenknownthattheprominentmanifestationofbonemarrowintheearlyperiodofacuteradiationwasthathematopoieticcellsdecreasedrapidly,venoussinusexpanded,becominghyperemic,andbloodflowwasinstasisll].Onthebasisofthetheoryofblood-activatingandstasiseliminatingofChinesetraditionalmedicine,weusedablood--activatingandstasis--eliminatingChinesedrug,aco…     

睾丸支持细胞与骨髓间充质干细胞共培养的初步研究

目的 观察睾丸支持细胞(sertoli cells,SCs)与骨髓间充质干细胞(mesenchymal stem cells,MSCs)共培养时SCs对MSCs扩增的影响. 方法 取雄性SD大鼠睾丸,分离出SCs,取SD大鼠,分离出骨髓MSCs,将两种细胞用"三明治"式的方法共培养7 d. 结果 共培养组的MSCs前四天生长较对照组快,第5天无明显差异,第6和第7天细胞数量迅速减少. 结论 在体外共培养的早期,SCs可以显著促进MSCs的生长,但在后期则反而抑制MSCs的生长,具体原因有待进一步研究.     

骨髓腔内移植对异基因骨髓移植小鼠造血的影响

目的:探讨骨髓腔内骨髓移植(Intrabonemarrowbonemarrowtransplantation,IBMBMT)对异基因骨髓移植小鼠造血功能的影响。方法:将供鼠C57BL/6(H2b)骨髓细胞经微量注射器直接注入到经致死量照射后的受鼠BalB/c(H2d)胫骨骨髓腔。在骨髓移植后1,7,14d分别检测受鼠外周血红细胞、白细胞、血小板;骨髓移植后7,14d分别检测受鼠骨髓中的CFUS。结果:IBMBMT组小鼠移植后7,14d的外周血红细胞、白细胞、血小板、骨髓脾集落形成单位(CFUS)均显著高于传统骨髓移植组(IVBMT)(P<0.01)。结论:IBMBMT较IVBMT更能促进异基因骨髓移植后造血功能重建。     

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.     

Study on the effects of Guiqi Oral Liquid in promoting recovery of hematopoiesis in acute irradiation injured mice

Objective: To explore the effects and possible mechanisms of Guiqi Oral Liquid (GQOL) on the recovery of hematopoiesis in acute irradiation injured mice.Methods: The acute irradiation injured mice were randomly divided into 2 groups: the treated group and the control group, and also a normal control group was set up with 6 mice in it receiving no treatment. After the mice in the former two groups were irradiated by 6.0 Gy⁶⁰Coγ-ray, every one of them was given 0. 4 ml GQOL or saline in equal volume through a gastric tube twice a day for 14 days. On the 4th, 8th and 14th day after irradiation, the bone marrow mononuclear cells (BMMNC) and megakaryocytes in bone marrow tissues of the mice were counted, the proportion of hematopoietic tissues (by area) was measured, and the expression of adhesion molecules, CD44 and CD54, in bone marrow were estimated by immunochemistry. The colony forming unit of spleen (CFU-S) in the mice were counted on the 8th day after irradiation.Results: On the 4th, 8th, 14th day after irradiation, the count of BMMNC and megakaryocyte, and the proportion of hematopoietic tissues in the treated group were higher than those in the control group (P<0.01 orP<0.05). CD44 and CD54 expression in the treated group were higher than those in the control group on the 4th and 8th day (P<0.01), but near normal on the 14th day (P<0.01). On the 8th day, CFU-S count in the treated group was higher than that in the control group (P<0.01).Conclusion: GQOL can regulate the expression of adhesion molecules, CD44 and CD54, in the bone marrow of the acute irradiation injured mice, which may be one of the mechanisms of GQOL in accelerating the early phase hematopoiesis recovery of mice. Supported by the National Natural Science Foundation of China (No. 39870926)     

银杏叶片对辐射损伤小鼠的保护作用

目的:研究银杏叶片对~(60)Co-γ射线对小鼠损伤的保护作用。方法:小鼠全身一次性5.0 Gy ~(60)Co-γ射线照射,之后每天灌胃银杏叶片10 mg/只,连续6 d和12 d。于第7天和第13天观察小鼠体重、脾重、睾丸重、骨髓细胞微核率和睾丸细胞微核率。结果:小鼠经照射后灌胃6 d,辐射对照组和银杏组小鼠脾重和脾脏指数显著低于未照射组(P<0.001),银杏组与辐射对照组脾重和脾脏指数差异无显著性(P>0.05)。银杏处理6 d嗜多染红细胞(PCE)微核率显著低于辐射对照组(P<0.001)而与未照射组差异无显著性(P>0.05)。生殖细胞微核率银杏组与辐射对照组差异无显著性(P>0.05),两组与未照射组相比显著增高(P<0.01)。辐射后灌胃12 d,银杏组脾重、脾脏指数显著低于辐射对照组(P<0.05);睾丸指数显著高于辐射对照组(P<0.05);PCE微核率和生殖细胞微核率辐射对照组、银杏组之间差异无显著性(P>0.05)。结论:银杏叶片灌胃对小鼠脾脏、睾丸等脏器和骨髓细胞的辐射损伤具有一定的保护作用。其中对骨髓细胞的辐射保护作用出现较早,对脾脏、睾丸的保护作用出现较晚。     

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 …     

骨髓单个核细胞移植对脊髓半横断大鼠损伤组织中髓鞘碱性蛋白表达的影响

目的：研究骨髓单个细胞移植脊髓半横断大鼠脊髓损伤区域后髓鞘碱性蛋白（myelin basic protein,MBP）表达的影响.方法：取Wistar大鼠胫骨及股骨提取骨髓单个核细胞,采用密度梯度离心法分离骨髓单个核细胞,制成细胞悬液.建立大鼠脊髓右半横断模型,造模后分为假手术组、模型组、骨髓单个核细胞移植组.于模型建立成功后7d,14d,21d,28d手术的大鼠进行BBB评分从而评估损伤脊髓神经功能恢复情况,利用RT-PCR观察MBP mRNA的表达变化.结果：术后各时间点假手术组BBB评分均明显高于骨髓单个核细胞移植组、模型组（P＜0.05）;术后随时间延长骨髓单个核细胞移植组、模型组BBB评分逐渐增加,14、21、28d时骨髓单个核细胞移植组BBB评分明显优于模型组（P＜0.05）.PT-PCR测试各时间点骨髓单个核细胞移植组和模型组大鼠脊髓中MBP mRNA的表达量高于假手术组,且骨髓单个核细胞移植组高于模型组（P＜0.05）.结论：骨髓单个细胞移植可提高脊髓组织中MBP的表达,有助于大鼠半横断脊髓损伤神经功能的恢复.     

网织红细胞参数在乳腺癌患者放疗过程中的变化

目的了解乳腺癌患者放疗导致骨髓造血功能抑制和恢复过程中白细胞(WBC)、血小板(PLT)、网织红细胞百分率(RET%)、高荧光强度网织红细胞百分率(HFR%)、中荧光强度网织红细胞百分率(MFR%)的动态变化情况。方法选择乳腺癌患者68例为放疗组,选择健康体检者36例为对照组,采用Sysmex全自动血细胞分析仪XT-2000i检测放疗前和放疗后第7、14、21、28、35、42天外周血WBC、PLT、RET%、HFR%、MFR%,对照组与放疗前比较及放疗组放疗前后各项指标的变化。结果放疗前组网织红细胞参数与正常对照组的RET%和HFR%比较,与放疗前的差异有统计学意义(P<0.05)。放疗组放疗前后组网织红细胞参数比较差异均有统计学意义(P<0.05),第7天,WBC、RET%、HFR%和MFR%已开始下降,差异有统计学意义(P<0.05);第14、21、28天,WBC、PLT、RET%、HFR%和MFR%持续下降,显著低于放疗前,差异有统计学意义(P<0.05);第35天,WBC和PLT持续低于放疗前,差异有统计学意义(P<0.05);第42天,WBC和PLT恢复到正常水平,低于放疗前水平,HFR%和MFR%持续增高,显著高于放疗前水平,差异有统计学意义(P<0.05)。结论 WBC、PLT、RET%、HFR%和MFR%5项参数可作为评价乳腺癌患者放疗后骨髓造血功能受抑和开始恢复的敏感指标,帮助临床医师及时调整治疗方案,不失时机地给予各种支持疗法及化疗时机的选择,具有重要的临床意义。     

骨缺损修复过程中间充质细胞的成骨作用

[目的 ]探讨间充质细胞在骨缺损修复过程中的作用 .[方法 ]家兔双侧桡骨中段制成骨缺损后往左侧缺损区内植入自体红骨髓作实验组 ,右侧未植入移植物的作对照组 .术后第 3,5 ,7d和第 2 ,4周分期取材 ,通过光学显微镜、电子显微镜观察间充质细胞的动态变化 .[结果 ]术后第 7d ,两组新生血管周围未分化间充质细胞转化为成骨细胞 .第 2周 ,实验组成骨细胞变为骨细胞 ,而对照组细胞变化不明显 .第 4周 ,两组血管周围间充质细胞呈扁平形 ,胞质内细胞器稀少 .[结论 ]骨缺损修复过程中早期新生血管周围间充质细胞有成骨潜能 ,红骨髓对其成骨有明显促进作用 .     

Effects of Platelet Factor 4 on Expression of Bone Marrow Heparan Sulfate in Syngenic Bone Marrow Transplantation Mice

Platelet factor 4 ( PF4) is a negativehematopoietic factor.It can inhibit the prolifera-tion of endothelial cells and hematopoietic stem/progenitor cells,particularly megakaryoryocyticcells,reversibly[1] ,inhibit DNA synthesis,blockcell cycle progression during S phase and reducethe sensibility of normal hematopoietic stem/pro-genitor cells,but not some cancer or leukemia celllines,to cytotoxic drugs and ionizing radia-tion[2 - 3] ,and it also can cause a population in-crease of the stem cel…     

复合BMSCs的异种骨移植材料异位成骨研究

目的:制备兔脱钙骨基质(DBM),研究复合骨髓间充质干细胞(BMSCs)的DBM的异位成骨能力。方法:制备DBM材料,将体外培养的ICR小鼠BMSCs与DBM复合培养后构建的组织工程骨植入ICR小鼠股部肌袋中,以单纯DBM植入组为对照,术后7d及28d行X线检测,并于术后7,14,28d取植入材料作组织学检测、钙含量测定。结果:DBM与BMSCs复合体植入后7d即有成骨细胞出现,随着时间增加成骨细胞增多,术后28d即有较成熟骨质形成,移植物钙含量随时间推移逐渐增高。单纯植入DBM术后14d出现少量成骨细胞,术后28d出现少量类骨质,钙含量持续处于较低水平。结论:DBM与BMSCs复合后具有很好的异位成骨能力,DBM是组织工程骨研究较理想的支架材料。