The micromass culture was used to determine the effects of vanadium pentoxide (V2O5 ) on the proliferation and differentiation of limb bud cells of rat. In the in vitro test, the results showed that V2O5 had obvious i...The micromass culture was used to determine the effects of vanadium pentoxide (V2O5 ) on the proliferation and differentiation of limb bud cells of rat. In the in vitro test, the results showed that V2O5 had obvious inhibiting effects on both proliferation and differentiation of limb bud cells with a dosedependent response, its proliferating and differentiating IC50 being 13.64 and 4.77μmol/L, respectively. In the in vivo/in vitro test, the results showed that V2O5 had no obvious effect on cell proliferation but had obvious inhibiting effect on cell differentiation. These results indicated that V2O5 might have a specific inhibiting effect on the differentiation of limb bud cells.展开更多
为深入揭示同型半胱氨酸(hom ocysteine,HCY)的致畸性及作用机理,应用大鼠胚胎中脑细胞微团培养法探讨了HCY(0~10m m ol/L)对胚胎中脑细胞增殖和分化的影响。结果显示:随着剂量的增加,HCY对胚胎中脑细胞分化具有促进和抑制双相作用,半...为深入揭示同型半胱氨酸(hom ocysteine,HCY)的致畸性及作用机理,应用大鼠胚胎中脑细胞微团培养法探讨了HCY(0~10m m ol/L)对胚胎中脑细胞增殖和分化的影响。结果显示:随着剂量的增加,HCY对胚胎中脑细胞分化具有促进和抑制双相作用,半数抑制分化浓度(IC50 )为4.3m m ol/L,当加入肝微粒体S9时,IC50减至2.3m m ol/L;在实验剂量范围内,HCY对中脑细胞增殖无明显抑制作用。上述结果说明HCY 对大鼠胚胎中脑细胞分化的影响明显高于对细胞增殖的影响。展开更多
文摘The micromass culture was used to determine the effects of vanadium pentoxide (V2O5 ) on the proliferation and differentiation of limb bud cells of rat. In the in vitro test, the results showed that V2O5 had obvious inhibiting effects on both proliferation and differentiation of limb bud cells with a dosedependent response, its proliferating and differentiating IC50 being 13.64 and 4.77μmol/L, respectively. In the in vivo/in vitro test, the results showed that V2O5 had no obvious effect on cell proliferation but had obvious inhibiting effect on cell differentiation. These results indicated that V2O5 might have a specific inhibiting effect on the differentiation of limb bud cells.
文摘为深入揭示同型半胱氨酸(hom ocysteine,HCY)的致畸性及作用机理,应用大鼠胚胎中脑细胞微团培养法探讨了HCY(0~10m m ol/L)对胚胎中脑细胞增殖和分化的影响。结果显示:随着剂量的增加,HCY对胚胎中脑细胞分化具有促进和抑制双相作用,半数抑制分化浓度(IC50 )为4.3m m ol/L,当加入肝微粒体S9时,IC50减至2.3m m ol/L;在实验剂量范围内,HCY对中脑细胞增殖无明显抑制作用。上述结果说明HCY 对大鼠胚胎中脑细胞分化的影响明显高于对细胞增殖的影响。