title: [A method for real-time observation of intracellular free Ca2+ concentration in single bovine retinal neurons].
abstract: In order to observe the neurotrophin's influence on intracellular free calcium concentration, the test neuron was labeled by fluorescence indicator Fluo-3, and imaged by self-built real-time fluorescence microscopy system. The authors observed the changes in intracellular free calcium concentration ([Ca2+]i) in the bovine retinal neurons under the influence of four kinds of neurotrophins such as brain derived neurotrophic factor BDNF. On account of the fact that fluorescence indicator's intensity decays over time, it is necessary to apply a "decay removal correction" to the fluorescence intensity in order to show the fluorescence intensity that solely represents [Ca2+]i. The corrected data shows an increase after adding neurotrophins to neurons, which is consistent with similar results published by other groups. Thus, our method of imaging living cells is feasible, and "decay removal correction" is reliable.
authors.affiliation: State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics of Tsinghua University, Beijing 100084, China. yangx07@gmail.com
authors.forename: Xun
authors.initials: X
authors.lastname: Yang
authors.forename: Xiao-Chen
authors.initials: XC
authors.lastname: Liu
authors.forename: Wan-Yun
authors.initials: WY
authors.lastname: Ma
mesh_terms: D000818:Animals; D019208:Brain-Derived Neurotrophic Factor / Q000502:physiology; D002118:Calcium / Q000032:analysis*; D020013:Calcium Signaling; D002417:Cattle; D003584:Cytological Techniques / Q000379:methods; D008856:Microscopy, Fluorescence / Q000379:methods*; D009414:Nerve Growth Factors / Q000502:physiology*; D009474:Neurons / Q000737:chemistry*; D012160:Retina / Q000737:chemistry* / Q000166:cytology
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D009414:Nerve Growth Factors; D002118:Calcium