کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4497331 1318929 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On calcium-buffer dynamics within the excess buffer regime
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
On calcium-buffer dynamics within the excess buffer regime
چکیده انگلیسی
In intracellular calcium signaling, calcium buffers has been recognized for their role in reshaping and localizing the calcium concentration profile in the vicinity of the channel, as well as reducing the effective diffusion of free calcium. In the presence of an excess of endogenous or exogenous buffers, linearization of the reaction-diffusion system describing the calcium-buffer dynamics has been instrumental in understanding the extent of the microdomain formation and in quantifying the apparent diffusion of the free calcium. In these linearized models, the conclusions are usually drawn from the steady-state solutions upon the opening of the channel. In this work, using the joint Laplace-Fourier method, we give an explicit integral transient solution, as well as, the long-time asymptotic behavior of the linearized calcium-buffer dynamics. The results confirm and emphasize the long stated intuitions on the diffusive character of the calcium-buffer dynamics. Numerical validations of our analytical results will be discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 264, Issue 1, 7 May 2010, Pages 55-65
نویسندگان
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