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Label-Free Fluorescence Spectroscopy for Detecting Key Biomolecules in Brain Tissue from a Mouse Model of Alzheimer’s Disease

机译:用于检测阿尔茨海默氏病小鼠模型脑组织中关键生物分子的无标记荧光光谱法

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摘要

In this study, label-free fluorescence spectroscopy was used for the first time to determine spectral profiles of tryptophan, reduced nicotinamide adenine dinucleotide (NADH), and flavin denine dinucleotide (FAD) in fresh brain samples of a mouse model of Alzheimer’s disease (AD). Our results showed that the emission spectral profile levels of tryptophan and NADH were higher in AD samples than normal samples. The intensity ratio of tryptophan to NADH and the change rate of fluorescence intensity with respect to wavelength also increased in AD brain. These results yield an optical method for detecting early stage of AD by comparing spectral profiles of biomolecules.
机译:在这项研究中,首次使用无标记荧光光谱法测定了阿尔茨海默氏病(AD)小鼠模型的新鲜脑样本中色氨酸,还原烟酰胺腺嘌呤二核苷酸(NADH)和黄素腺嘌呤二核苷酸(FAD)的光谱图)。我们的结果表明,AD样品中色氨酸和NADH的发射光谱图谱水平高于正常样品。色氨酸与NADH的强度比和荧光强度相对于波长的变化率在AD脑中也增加。这些结果产生了一种通过比较生物分子的光谱图来检测AD早期的光学方法。

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