RESUMEN
Objective To investigate the effect of treatment with transplanted bone marrow mononuclear cells under different transplant paths on neovascularization in ischemic cerebral infarction rats. Methods The MCAO models were established by intraluminal vascular suture method. All the successful models were randomly divided into control group, intravenous transplantation group and subarachnoid transplantation group according to the random number table. The Extraction,isolation and culture of bone marrow mononuclear cells were extracted,i?solated and cultured. The models in the control group were injected 200μl PBS through the femoral vein. The mod?els in the intravenous transplantation group were injected 200μl containing 2×107 bone marrow mononuclear cells through the femoral vein. The models in the subarachnoid transplantation group were injected 200μl containing 2× 107 bone marrow mononuclear cells through the subarachnoid. The VEGF levels in cerebrospinal fluid of rats were detected using quantitative ELISA method. The vascular regenerations in the infarct area were observed by using quantitative immunofluorescence. Results After transplantation of bone marrow mononuclear cells 7 d,14 d and 28 d,the VEGF levels of rat cerebrospinal fluid in subarachnoid transplantation group were (207.4±8.9)pg/ml, (171.2±10.3)pg/ml and (143.8±13.8)pg/ml,respectively,which were all higher than the VEGF levels in intra?venous transplantation group,the differences were all statistically significant (P<0.05). After transplantation 14 d and 28 d,the BrdU?positive cells in subarachnoid transplantation group were ( 2043. 8 ± 514. 2) and ( 1834. 8 ± 307.4) ,respectively,which were higher than the intravenous transplantation group,the differences were all statisti?cally significant (P<0.05). The microvessel counts in subarachnoid transplantation group were (384.6±45.1) and (514.8±51.3),respectively,which were higher than that in the intravenous transplantation group,and the differ?ences were all statistically significant (P<0.05) . Conclusions Bone marrow mononuclear cells transplantation can increase VEGF secretion,and promote angiogenesis infarct. The effect of subarachnoid transplantation is better.