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Effects of antihypertensive treatment on cardiac IGF-1 during prevention of ventricular hypertrophy in the rat.

机译:降压治疗对预防大鼠心室肥大过程中心脏IGF-1的影响。

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摘要

There is some evidence that cardiac rather than circulating insulin-like growth factor-1 (IGF-1) levels contribute to the development of renovascular hypertensive left ventricular hypertrophy (LVH), remaining unknown the effects of antihypertensive drugs on IGF-1 levels. We have assessed here the preventive effects of enalapril, losartan, propanolol and alpha-methyldopa on left ventricle (LV) and circulating IGF-1 levels in a rat model of hypertension and LVH (Goldblatt, GB). Our results show that relative LV mass and the LV content of IGF-1 were significantly lower with all antihypertensive drugs in GB rats (p<0.001). Serum concentrations of IGF-1 were lower in GB rats treated with enalapril, alpha-methyldopa and propanolol (p<0.01), but not in those treated with losartan. These results support the hypothesis that local rather than seric IGF-1 contributes to the development of left ventricular hypertrophy induced by pressure overload in the rat.
机译:有证据表明,心脏而非循环中的胰岛素样生长因子-1(IGF-1)水平有助于肾血管性高血压左心室肥大(LVH)的发展,而降压药物对IGF-1水平的影响尚不清楚。我们在这里评估了依那普利,氯沙坦,普萘洛尔和α-甲基多巴对高血压和LVH(Goldblatt,GB)大鼠模型中左心室(LV)和循环IGF-1水平的预防作用。我们的研究结果表明,所有抗高血压药物在GB大鼠中相对LV质量和IGF-1的LV含量均显着降低(p <0.001)。依那普利,α-甲基多巴和丙醇治疗的GB大鼠血清IGF-1浓度较低(p <0.01),而氯沙坦治疗的大鼠则不然。这些结果支持这样的假说,即局部而非血清IGF-1促进了大鼠压力超负荷引起的左心室肥大的发展。

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