首页> 外文会议>ASME international mechanical engineering congress and exposition >A MATHEMATICAL MODEL OF PARATHYROID HORMONE RESPONSE TO ACUTE CHANGES IN PLASMA IONIZED CALCIUM CONCENTRATION IN HUMANS
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A MATHEMATICAL MODEL OF PARATHYROID HORMONE RESPONSE TO ACUTE CHANGES IN PLASMA IONIZED CALCIUM CONCENTRATION IN HUMANS

机译:甲状旁腺激素应对对人体血浆电离钙浓度急性变化的数学模型

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A complex bio-mechanism, referred to as calcium home-ostasis, regulates plasma ionized calcium (Ca~(++)) concentration in the human body to within a narrow physiologic range which is crucial for maintaining normal physiology and metabolism. In this paper we present a qualitative model of the calcium homeo-static system and then focus on a particular sub-system, termed Ca-PTH axis. We consider the dynamics of the axis involving the response of the parathyroid glands to acute changes in plasma Ca~(++) concentration. We use a two-pool, linear time-varying model to describe the Ca-PTH axis. We show that this model, parameterized using a guided iterative parametrization scheme and induced hypocalcemic clamp test data, successfully predicts dynamics observed in clinical tests of induced hypercalcemia in normal humans.
机译:一种复杂的生物机制,称为钙质骨质骨质,调节人体中的血浆电离钙(Ca〜(++))浓度在狭窄的生理范围内,这对于维持正常生理和代谢至关重要。本文介绍了钙质静态系统的定性模型,然后专注于特定的子系统,称为CA-PTH轴。我们考虑涉及甲状旁腺响应急性变化的轴的动态,血浆Ca〜(++)浓度的急性变化。我们使用双池线性时变模型来描述CA-PTH轴。我们表明该模型使用导向迭代参数化方案和诱导的低钙糖钳位测试数据参数化,成功地预测了在正常人体中诱导高钙血症的临床试验中观察到的动态。

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