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相关概念视频

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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在恶性甲状腺组织中使用FTIR光谱学证明的华堡效应.

Adriana Martinez-Cuazitl1, Monica Maribel Mata-Miranda2, Edgar Hernandez-Abarca1

  • 1Hospital Central Militar, Secretaría de la Defensa Nacional, 11200 Mexico City, Mexico.

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概括

福里埃变换红外光谱法 (FTIR) 揭示了甲状腺组织的代谢和结构变化,区分了良性瘤,恶性瘤和健康组织. 这项技术在恶性瘤中发现了华堡效应.

关键词:
在ATR-FTIR中使用.化学测量分析的化学分析.甲状腺癌是什么?甲状腺癌是什么?甲状腺结节性疾病 甲状腺结节性疾病华堡效应是什么? 华堡效应

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科学领域:

  • 生物化学 生物化学
  • 频谱学是一种光谱学.
  • 内分泌学 在内分泌学.

背景情况:

  • 甲状腺癌是最常见的内分泌恶性瘤,诊断依赖于超声波 (USG) TI-RADS,临床症状和活检 (贝塞斯达系统).
  • 生物标志物和先进的光谱技术可以进一步支持甲状腺结节的诊断.

研究的目的:

  • 使用富里叶变换红外光谱法 (FTIR) 来比较良性瘤 (BT) 和恶性瘤 (MN) 之间的化学测量变化.
  • 使用FTIR光谱分析甲状腺病理 (TP) 和健康组织 (HT) 之间的差异.

主要方法:

  • 用减弱总反射率-FTIR (ATR-FTIR) 光谱分析了甲状腺结节性疾病活检.
  • 比较了BT与MN和TP与HT的生物分子化合物.
  • 活检前的数据包括实验室血液测试,USG TI-RADS分类和贝塞斯达细胞病理学报告.

主要成果:

  • 与良性瘤 (BT) 相比,恶性瘤 (MN) 显示肌素增加和白蛋白减少.
  • FTIR分析显示了MN的代谢变化,表明了华堡效应,蛋白质与脂质/DNA比率增加.
  • 与健康组织 (HT) 相比,甲状腺病理 (TP) 显示了脂质,脂肪酸,胺基III和核酸的结构变化.

结论:

  • 代谢变化,包括华堡效应,是恶性瘤的特征,脂质和DNA相对于蛋白质含量减少.
  • 与健康组织相比,甲状腺病理中观察到关键生物分子的显著结构变化.
  • 需要进一步的研究,以充分阐明FTIR光谱在甲状腺疾病中的诊断潜力.