摘要
目的观察酮替芬(Ket)对动脉粥样硬化形成的干预作用。方法将40只雄性Wistar大鼠随机分为4组,即A组[高脂+维生素D_3(VitD_3)]、B组[高脂+VitD_3+Ket]、C组[高脂+VitD_3+卵蛋白(OVA)]和D组(高脂+VitD_3+OVA+Ket)。A组常规建立动脉粥样硬化模型,C组在常规高脂的基础上加用OVA激活肥大细胞建立动脉粥样硬化模型,B、D两组分别在A、C组建立动脉粥样硬化的过程中给予Ket干预。实验完毕后,分别对A、B组以及C、D组斑块病理形态及斑块中肥大细胞的分布情况进行比较。结果 (1)A、C组动脉粥样硬化病理改变分别较B、D组为重,可见典型AS及不稳定AS改变;B、D组Ket药物干预达到预期效果;(2)动脉粥样硬化斑块中的肥大细胞分布密度A组比B组:5.00±1.41比2.88±1.25,P<0.05;C组比D组:8.00±1.29比5.86±2.03,P<0.05,差异均有统计学意义;(3)实验结束时测定大鼠血清白介素(IL)-6水平,A组比B组:(60.18±8.15)ng/L比(41.52±6.71)ng/L,P<0.05;C组比D组:(90.66±8.18)ng/L比(68.32±5.92)ng/L,P<0.05,差异均有统计学意义。结论高脂+VitD_3+OVA能够建立较为成熟、更符合人类动脉粥样硬化病理形态的大鼠模型;肥大细胞在动脉粥样硬化的形成中有着重要作用,是动脉粥样硬化形成的重要炎症细胞;全身性的肥大细胞活化对斑块形成有促进作用;Ket有抑制炎症因子活化的作用,对斑块形成及失稳定有预防作用。
Objective To investigate the effects of Ketotifen on atherosclerosis in Wistar rats. Methods Forty male Wistar rats were randomly divided into 4 groups: group A (n = 10) accepted high-fat ( + Propylthiouraeil, PTU) feeding and VitD3 injection; group B (n = 10) with high-fat ( + PTU) feeding and VitD3 plus Ketotifen injection; group C ( n = 10) with high-fat ( + PTU) feeding and VitD3 plus ovalbumin (OVA) injection;group D ( n = 10) with high-fat ( + PTU) feeding, VitD3 and OVA plus Ketotifen injection. Plaque pathology and the distribution of mast cells in the plaque were compared among each group. Results ( 1 ) Pathological changes were more serious in group A and C than in group B and D; (2) Mast cell density in atheromatous plaques was higher in group A than in group B (5.00 ± 1.41 vs. 2. 88± 1.25, P〈0.05) and higher in group C than in group D (8.00 ±1.29 vs. 5.86 ±2.03, P 〈0.05); (3) Serum interleukin-6 level was higher in group A than in group B [ (60. 18 ±8.15 ) ng/L vs. (41.52 ± 6. 71 ) ng/L, P 〈 0. 05 ] ; and higher in group C than in group D [ (90. 66±8. 18) ng/L vs. (68. 32 ±5.92) ng/L, P 〈0. 05]. Condusions Ketotifen can inhibit proinflammatory factor activation and prevent formation and losing stability of plaque in rats.
出处
《中国心血管杂志》
2011年第4期305-308,共4页
Chinese Journal of Cardiovascular Medicine