心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

肌钙蛋白I及心肌酶谱在毒蛇咬伤心肌损伤中的临床意义

目的:探讨血清肌钙蛋白I(cTnI)及心肌酶谱在毒蛇咬伤患者心肌损伤中的临床意义.方法:将328例毒蛇咬伤患者的临床资料按照人院时的病情分为:轻型229例、重型71例及危重型28例;按蛇毒类型分类:神经毒12例,血循毒14例,混合毒302例.比较各组间的心肌酶谱与cTnI的变化.结果:重型组心肌酶谱较轻型组明显升高(P<0.01),而cTnI无显著差异;危重型组心肌酶谱、肌钙蛋白I较轻型组和重型组均明显升高(P<0.01).血循毒和混合毒组心肌酶谱和肌钙蛋白I较神经毒组明显升高(P<0.01).结论:cTnI检测可反映毒蛇咬伤患者心肌的损伤,且比心肌酶谱更有临床价值.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

实时定量PCR法检测骨髓间充质干细胞移植到梗死心肌后的存活数量

目的：建立一种干细胞移植到梗死心肌后检测其存活数量的有效方法。方法：选取10只雌性SD大鼠结扎前降支,心肌梗死3周后,随机分成移植组与对照组,同时选取雄性大鼠培养出骨髓间充质干细胞（MSCs）,分别将MSCs（3×10^6个,50μL）及等体积的PBS液移植到梗死心肌中,24h后通过实时定量PCR（Real-time PCR）检测雄性大鼠Y染色体上特有的基因SRY,从而得知移植MSCs的存活数量。结果：MSCs移植24h后,移植组梗死心肌中检测到SRY基因数占移植总数的14.9％±8.3％,存活细胞的绝对数量为447195±248090,而对照组均禾检测到SRY基因的存在。结论：用Real-time PCR的方法能有效地检测到具有SRY基因的干细胞,从而能准确地得知移植干细胞的存活数量,Real-time PCR技术在心梗后干细胞移植的基础研究及临床应用中具有童要的价值。     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

Objective To study the systemic distribution of bone marrow derived mesenchymal stem cells (MSCs) 24 h and 2 weeks after cell injection into the border zone of myocardial infarction area. Methods MSCs from male SD rats were labeled with Bromodeoxyuridine (BrdU). Three weeks after in-duction of myocardial infarction,female SD rats were randomized into 2 groups. Labeled cells (3 × 10 ,50 μl) were injected into the border zone of infarcted area in the one group (n = 12) ,and PBS of equal vol-ume was injected into the border zone of infarcted area in the other group ( n = 8 ). The systemic distribu-tion of MSCs was evaluated through real-time PCR and immunohistochemistry at time points of 24 h and 2 weeks after injection, respectively. Results Cells injected into border zone of infarcted area were distribu-ted to extra-cardiac organs such as spleen,lung and liver. Twenty-four h after injection,cells mainly con-centrated in the heart (467 467 ± 191 387) ,while obvious cell loss was noted in all organs including the heart ( 112 388 ±43 751 ) 2 weeks after injection. Of immunostaining were consistent with those of real-time PCR. Conclusion After injected into the border zone of infarcted area, MSCs mainly gathered in the heart with distributions into spleen, lung, and liver. However, substantial number of cells lost with pro-longed time span.     

心肌梗死后移植骨髓间充质干细胞后全身细胞的分布

目的 观察经心肌梗死边缘区移植骨髓间充质干细胞(MSCs)24 h和2周后的全身分布.方法 雄性SD大鼠的MSCs用溴脱氧尿苷(BrdU)标记.将雌性SD大鼠经心梗3周后随机分为2组.第1组为标记细胞(3×10,50μl)经心肌注入心梗边缘区(n=12).第2组为等体积的磷酸盐缓冲液(PBS)经心肌注入心梗边缘区(n=8).移植细胞24 h及2周后,体内细胞的分布情况通过实时定量逆转录-聚合酶链反应(RT-PCR)检测及病理切片免疫组织化学染色来评价.结果 细胞经心梗边缘区移植后可以分布在心脏以及心外脏器脾脏、肺脏和肝脏中.移植24 h后细胞主要在心脏中分布(467 467±191 387),其他脏器中的分布较少,而在2周后移植细胞在包括心脏(112 388±43 751)在内的各个脏器中的分布都很少,病理切片免疫组织化学染色结果显示与RT-PCR结果相符.结论 MSCs经心梗边缘区移植后主要在心脏中分布,同时脾脏、肺脏、肝脏中也有分布,但其分布数量随着移植时间锐减.