开发一种超灵敏的激光刺激光系统,用于同时检测氨基酸
Megha Naik1, Ajeetkumar Patil1
1Department of Atomic and Molecular Physics, Manipal Academy of Higher Education (MAHE) Manipal India-576 104 ajeetkumar.p@manipal.edu ajeetkumarp@gmail.com.
RSC advances
|October 29, 2024
概括
一个新的超灵敏检测系统准确地测量了样本中的20种氨基酸. 这种可靠,具有成本效益的方法有助于诊断氨基酸疾病.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 氨基酸是各种生理和病理状态的关键生物标志物.
- 精确和敏感的氨基酸量化对于临床诊断和研究至关重要.
- 现有的方法可能缺乏所需的灵敏度,可重复性或通量,以进行全面的氨基酸分析.
研究的目的:
- 开发和验证基于超灵敏,高性能液态染色学 (HPLC) 的激光刺激光 (LSF) 检测系统.
- 为了使20个衍生氨基酸的同时检测具有高灵敏度和可靠性.
- 评估该方法在生物样本 (如人体血清) 中分析氨基酸的适用性.
主要方法:
- 开发一个HPLC系统与LSF检测相结合.
- 对20种氨基酸的丹西尔化物衍生物的优化,重点是反应时间和温度.
- 使用标准氨基酸溶液验证该方法的灵敏度,线性和可重复性.
- 应用验证的方法来分析人类血清样本中的氨基酸.
主要成果:
- 开发的系统能够同时检测出20种衍生氨基酸.
- 证明了出色的灵敏度,检测极限范围从4.32到85.34女性分子.
- 证实了高可靠性,大多数氨基酸的相对标准偏差通常低于5%.
- 观察到良好的线性,所有氨基酸的回归 (R2) 值超过0.98.
- 在人血清样本中成功识别和量化氨基酸.
结论:
- HPLC-LSF系统为氨基酸分析提供了一种超敏感,可靠和可重复的方法.
- 该方法用户友好且具有成本效益,因此适用于各种临床应用.
- 这种技术为诊断和管理与氨基酸有关的疾病提供了显著的潜力.
- 经过验证的系统是分析各种生物流体中氨基酸的宝贵工具.
相关概念视频
01:19Protein Dynamics in Living Cells
2.1K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.1K
03:31Labeling DNA Probes
8.1K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.1K
01:37Super-resolution Fluorescence Microscopy
6.9K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
6.9K
01:29Atomic Fluorescence Spectroscopy
248
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
248