V C Pretheesh Kumar, Pullarkat Pramod
Raman Research Institute, Bangalore, India.
Neuroinformatics. 2025 Apr 24;23(2):30. doi: 10.1007/s12021-025-09726-5.
Axonal beading is a key morphological indicator of axonal degeneration, which plays a significant role in various neurodegenerative diseases and drug-induced neuropathies. Quantification of axonal susceptibility to beading using neuronal cell culture can be used as a facile assay to evaluate induced degenerative conditions, and thus aid in understanding mechanisms of beading and in drug development. Manual analysis of axonal beading for large datasets is labor-intensive and prone to subjectivity, limiting the reproducibility of results. To address these challenges, we developed a semi-automated Python-based tool to track axonal beading in time-lapse microscopy images. The software significantly reduces human effort by detecting the onset of axonal swelling. Our method is based on classical image processing techniques rather than an AI approach. This provides interpretable results while allowing the extraction of additional quantitative data, such as bead density, coarsening dynamics, and morphological changes over time. Comparison of results obtained through human analysis and the software shows strong agreement. The code can be easily extended to analyze diameter information of ridge-like structures in branched networks of rivers, road networks, blood vessels, etc.
轴突串珠是轴突退化的关键形态学指标,在各种神经退行性疾病和药物性神经病变中起重要作用。利用神经元细胞培养对轴突串珠易感性进行量化,可作为一种简便的检测方法来评估诱导性退行性病变,从而有助于理解串珠形成机制和药物研发。对大型数据集进行轴突串珠的手动分析劳动强度大且易受主观因素影响,限制了结果的可重复性。为应对这些挑战,我们开发了一种基于Python的半自动工具,用于在延时显微镜图像中跟踪轴突串珠。该软件通过检测轴突肿胀的起始显著减少了人力。我们的方法基于经典图像处理技术而非人工智能方法。这在允许提取额外定量数据(如串珠密度、粗化动力学和随时间的形态变化)的同时提供了可解释的结果。通过人工分析和该软件获得的结果比较显示出高度一致性。该代码可轻松扩展,以分析河流、道路网络、血管等分支网络中脊状结构的直径信息。