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Objective: To investigate the directed transplantation of allograftic bone marrow-derived mesenchymal stem cells (MSCs) in myocardial infarcted (MI) model rabbits. Materials and Methods: Rabbits were divided into 3 groups, heart infarcted model with MSCs transplanted treatment (MSCs group, n=12), heart infarcted model with PBS injection (control group, n=20), sham operation with PBS injection (sham group, n=l 7). MSCs labelled by BrdUrd were injected into the MI area of the MSCs group. The same volume of PBS was injected into the MI area of the control group and sham group. The mortality, LVIDd, LVIDs and LVEF Of the two groups were compared 4 weeks later. Tropomyosin inhibitory component (Tn I) and BrdUrd immunohistochemistry identified the engrafted cells 4 weeks after transplantation. Result: The mortality of the MSCs group was 16.7% (2/12), and remarkably lower than the control group's mortality [35% (7/20) (P＜0.05)].Among the animals that survived for 4 weeks, the LVIDd and LVIDs of the MSCs group after operation were 1.17±0.21 cm and 0.74±0.13 cm, and remarkably lower than those of the model group, which were 1.64±0.14 cm and 1.19±0.12 cm (P＜0.05); the LVEF of the MSCs group after operation was 63±6%, and remarkably higher than that of the model group,which was 53±6% (P＜0.05). Among the 10 cases of animals that survived for 4 weeks in the MSCs group, in 8 cases (80%),the transplanted cells survived in the non MI, MI region and its periphery, and even farther away; part of them differentiated into cardiomyocytes; in 7 cases (70%), the transplanted cells participated in the formation of blood vessel tissue in the MI region. Conclusion: Transplanted allograftic MSCs can survive and differentiate into cardiomyocytes, form the blood vessels in the MI region. MSCs transplantation could improve the heart function after MI. 相似文献
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目的研究患者血浆脑钠肽前体N端片段(NT-proBNP)在心血管病人心功能评价方面的作用。方法收录95个病人。根据病史、体格检查及超声心动图对病人进行评估。分为3组:A组(心功能正常,n=25)、B组(左室舒张功能不全,n=52)和C组(收缩功能不全,有或无舒张功能不全,n=18)。血浆NT-proBNP浓度在RochElecsys2010全自动测定仪上使用电化学发光法测定。结果在未分组的样本分析中,血浆NT-proBNP浓度与左室舒张末期内径(r=0.54,P=0.0016)、左房舒张末期内径(r=0.49,P=0.0016)、左室射血分数(r=0.59,P=0.0015)之间有显著相关性,与年龄没有明显的相关性。男性病人平均血浆NT-proBNP水平(945.5±3238.2)pg/mL和女性病人(722.0±1414.2)pg/mL之间差异没有显著性(P=0.66)。分组后分析显示:B组和C组病人的平均血浆NT-proBNP浓度分别是(128.6±194.8)pg/mL,(2496.2±4054.0)pg/mL与A组(39.6±46.1)pg/mL相比明显升高。结论在中国人群中,心血管病病人血浆NT-proBNP浓度的升高与心脏左室收缩、舒张功能受损及心腔扩大明显相关。 相似文献
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Objective: To investigate the directed transplantation of allograftic bone marrow-derived mesenchymal stem cells (MSCs) in myocardial infarcted (MI) model rabbits. Materials and Methods: Rabbits were divided into 3 groups, heart infarcted model with MSCs transplanted treatment (MSCs group, n=12), heart infarcted model with PBS injection (control group, n=20), sham operation with PBS injection (sham group, n=17). MSCs labelled by BrdUrd were injected into the MI area of the MSCs group. The same volume of PBS was injected into the MI area of the control group and sham group. The mortality, LVIDd, LVIDs and LVEF of the two groups were compared 4 weeks later. Tropomyosin inhibitory component (Tn I) and BrdUrd immunohistochemistry identified the engrafted cells 4 weeks after transplantation. Result: The mortality of the MSCs group was 16.7% (2/12), and remarkably lower than the control group's mortality [35% (7/20) (P<0.05)]. Among the animals that survived for 4 weeks, the LVIDd and LVIDs of the MSCs group 相似文献
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