通过三维拉曼光谱成像来对皮肤中的目标进行分层定量
概括
这项研究引入了一种3D拉曼成像方法,用于量化皮肤层中的活性成分. 它纠正信号损失,使得像尼古丁胺类化合物在角质层和表皮层中的可视化.
科学领域:
- 皮肤病学和生物医学光学
- 化学分析和成像技术
背景情况:
- 精确量化皮肤层中的活性成分 (AIs) 对药物输送和化品疗效至关重要.
- 传统方法往往缺乏空间分辨率或深度透来分析分层AI分布.
- 三维 (3D) 拉曼成像为生物组织内的非侵入性,高分辨率化学分析提供了潜力.
研究的目的:
- 开发和验证3D拉曼成像技术,用于皮肤角层 (SC) 和表皮层 (EP) 层中AI的分层定量.
- 为了应对信号衰减的挑战,随着3D拉曼数据采集的深度不断增加.
- 为了创建一个特定的校正方法可视化AI in vivo.
主要方法:
- 利用3D拉曼成像技术对AI进行分层定量化.
- 采用多重线性回归和最小平方算法来分析相对度系数.
- 开发了一种校准过程,将皮肤深度,二维拉曼成像系数和高性能液态染色学 (HPLC) 数据联系起来.
- 创建了一个特定的3D拉曼信号减弱校正方程,用于尼古丁胺胺.
主要成果:
- 成功实现了皮肤内尼古丁胺胺的3D分层成像.
- 开发了一种方法来纠正信号减弱在越来越深的地方.
- 证明了在SC和EP层量化AI的能力.
- 在体内提供AI分布的视觉分析.
结论:
- 开发的3D拉曼成像方法与信号减弱校正使皮肤AI的精确,分层定量成为可能.
- 该技术为皮肤学研究和产品开发中的活性化合物的体内可视化和分析提供了强大的工具.
- 该研究成功建立了尼古丁胺胺特异性的校正方程式,为更广泛的AI分析铺平了道路.
相关概念视频
01:20Raman Spectroscopy: Overview
294
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
294
01:26Raman Spectroscopy Instrumentation: Overview
277
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
277