使用机器学习对二次子代显微镜图像进行和糖诱导肝脏原蛋白重塑的定量分析
Mónica Maldonado-Terrón1, Julio César Guerrero-Lara1, Rodrigo Felipe-Elizarraras2
1Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Cto. Exterior S/N, C.U., Coyoacán, Ciudad de México 04510, Mexico.
Cells
|February 12, 2026
概括
含糖量高的饮食,尤其是含的饮食,显著增加非酒精性脂肪肝 (NAFLD) 纤维化风险. 这种饮食组合改变了肝脏的原纤维结构,表明肝脏损伤的主要危险因素.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
- 生物医学工程 生物医学工程
背景情况:
- 非酒精性脂肪肝 (NAFLD) 是一种与饮食有关的渐进性肝病,可能导致肝硬化.
- 饮食因素在NAFLD病变发生过程中至关重要,需要对特定的饮食成分及其影响进行研究.
研究的目的:
- 为了研究和糖分丰富的饮食对雄性Wistar大鼠肝纤维化发展的影响.
- 用SHG显微镜和机器学习分析肝脏组织中的原纤维重塑.
主要方法:
- 雄性Wistar大鼠被食控制,,糖或-糖组合饮食.
- 第二波子 (SHG) 显微镜分析了肝脏组织的原纤维.
- 一个神经网络分类SHG图像来评估纤维化风险和原纤维方向.
主要成果:
- 随着饮食干预,纤维化风险显著增加:10% (对照组),24% (),40% (糖) 和62% (-糖).
- 原纤维的角宽度分布显著缩小,表明纤维结构发生了变化,特别是在-糖组 (2.8°).
- 图像分类的关键统计特征包括像素强度,平均/std比,模式和总强度.
结论:
- 含糖量高的饮食,特别是与相结合时,是肝纤维化的重要危险因素.
- 饮食干预导致肝脏原纤维结构和方向发生实质性变化.
- 对SHG显微镜的机器学习分析为评估纤维化风险提供了一种定量方法.
相关概念视频
Nucleosome Remodeling
11.3K
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
11.3K
Harmonic Mean
3.8K
The arithmetic mean is usually skewed towards the larger values in the data set. Therefore, to avoid this inherent bias towards smaller values, the harmonic mean is used.
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
Take the example of the speed of a car, which is the measure of the rate of distance traveled. If the vehicle traverses the same distance back-and-forth, its average speed equals the total distance traveled divided by the total time taken. However, if the car moves with varying speeds, then the arithmetic mean is more skewed...
3.8K
Quantitative Analysis
1.5K
Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
1.5K
Machines
581
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
A free-body diagram of the...
581
Simple Harmonic Motion
15.4K
Simple harmonic motion is the name given to oscillatory motion for a system where the net force can be described by Hooke's law. If the net force can be described by Hooke's law and there is no damping (by friction or other non-conservative forces), then a simple harmonic oscillator will oscillate with equal displacement on either side of the equilibrium position. To derive an equation for period and frequency, the equation of motion is used. The period of a simple harmonic oscillator is given...
15.4K
Bone Remodeling
40.5K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.5K


