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首页> 外文期刊>New Journal of Chemistry >Probing blood plasma samples for the detection of diabetes using SERS aided by PCA and LDA multivariate data analyses
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Probing blood plasma samples for the detection of diabetes using SERS aided by PCA and LDA multivariate data analyses

机译:使用PCA和LDA多变量数据分析使用SERS检测血浆样本用于检测糖尿病

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The present paper reports the fabrication of an effective and reproducible SERS-active substrate for detecting individuals with "normal", "moderately high" and "very high" diabetic conditions from the enhanced vibrational signatures of their respective label-free blood plasma samples. The SERS-active substrate has been fabricated by entrapping gold nanoparticles in the Langmuir-Reverse Schaefer film matrix of 5-CB liquid crystal molecules. The chemical composition of the as-fabricated substrate has been unveiled from the XPS spectrum, while the morphological features of the substrate are explored using FESEM and AFM images. The SERS efficacy of the substrate is primarily tested with 4-mercaptopyridine molecules. The experimental observations are supported by multivariate data analyses. The as-fabricated substrate is proved to have the unique efficacy to detect the SERS spectra of many types of molecules present in blood plasma samples, whose upregulation in diabetic patients is correlated with their glucose levels. We believe that the as-prepared SERS-active substrate can be used as a suitable alternative not only for detecting glucose levels indirectly from blood plasma samples but also in other real-world diagnostic applications.
机译:本论文报道了一种有效且可重复的SERS活性基底的制备,用于检测“正常”、“中度高”和“非常高”糖尿病患者,从他们各自的无标签血浆样品的增强振动特征中检测。通过将金纳米粒子包埋在5-CB液晶分子的Langmuir反向Schaefer膜基质中,制备了SERS活性基底。XPS光谱揭示了所制备基底的化学成分,同时利用FESEM和AFM图像探索了基底的形态特征。底物的SERS效能主要通过4-巯基吡啶分子进行测试。实验观察得到了多元数据分析的支持。已证明,所制备的基质在检测血浆样本中存在的多种类型分子的SERS光谱方面具有独特的功效,糖尿病患者的SERS光谱上调与血糖水平相关。我们相信,所制备的SERS活性底物不仅可用于间接检测血浆样本中的葡萄糖水平,还可用于其他实际诊断应用。

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