ABSTRACT
OBJECTIVE:To study the effects of topirmate on proliferation of neural stem cells in vitro.METHODS:Primary neural stem cells from newborn mice were cultured.The neural stem cells were incubated together with topiramate at 0.4,2 or 10 ?mol?L-1.A vehicle control and positive control were set up,respectively.The quantity and viability of neural stem cells newly generated were analyzed by a convert phase microscope,the neurosphere numbers were counted,and neural stem cells viability was determined and a MTT assay.RESULTS:The number of neurospheres of groups treated with topiramate at 2 and 10 ?mol?L-1 are 20.67?4.04,49.68?3.79,respectively,and the value of MTT assay of the two groups are 0.354 6?0.070 5,0.501 8?0.036 9,it was higher than the vehicle control neural stem cells(7.34?2.31、0.288 0?0.009 3,P
ABSTRACT
AIM: To evaluate the role of human angiotensin Ⅱ(AngⅡ) type Ⅰ receptor (AT1R) antisense cDNA (ahAT1) on migration of cultured artery smooth muscle cells (VSMCs). METHODS: Two recombinant adenoviral vectors, Ad/CMV. ahAT1 containing full length antisense cDNA targeting to human AT1R mRNA, and Ad/CMV.LacZ containing LacZ called report gene, were constructed by orientation clone technology and homologous recombination, and then were used to transfect VSMCs in vitro. AT1R expression detected by RT-PCR and immunohistochemistry, and migration of VSMCs measured by Boyden's Chamer methods, were compared between transfected and non- transfected VSMCs. RESULTS: Forty-eight hours after Ad/CMV. ahAT1 transfection, the level of AT1R mRNA decreased markedly (50% of control group), and AT1R protein expression was significantly less (P