کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
21932 43244 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monitoring Calcium Concentration in Neurons with Cameleon
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Monitoring Calcium Concentration in Neurons with Cameleon
چکیده انگلیسی

The calcium ion, a second messenger in the brain, plays key roles in neuronal signaling pathways. Ca2+ signals in neurons are often highly localized and difficult to measure accurately. The quantification of calcium concentration is thus critical for understanding neuronal signaling. In this study, a yellow cameleon (YC3.60) excited using a 458 nm laser was used to monitor the calcium signals in neurons, and the dynamic range (Rmax/Rmin) of YC3.60 was found to reach 250%. The spatial distribution of calcium and the physiological changes in hippocampal neurons and even in spines were determined by the fluorescence resonance energy transfer (FRET) method. It was proved that cameleon could be used for the quantitative measurement of calcium concentration in neurons. Fluorescence readout of the calcium concentration in neurons by FRET is nondestructive, quantifiable with high spatiotemporal resolution, and even applicable to dendritic spines.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Bioscience and Bioengineering - Volume 105, Issue 2, February 2008, Pages 106–109
نویسندگان
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