Abstract
Introduction
Several functional gastrointestinal disorders (FGIDs) have been associated with the degradation or remodeling of the network of interstitial cells of Cajal (ICC). Introducing fractal analysis to the field of gastroenterology as a promising data analytics approach to extract key structural characteristics that may provide insightful features for machine learning applications in disease diagnostics. Fractal geometry has advantages over several physically based parameters (or classical metrics) for analysis of intricate and complex microstructures that could be applied to ICC networks.
Methods
In this study, three fractal structural parameters: Fractal Dimension, Lacunarity, and Succolarity were employed to characterize scale-invariant complexity, heterogeneity, and anisotropy; respectively of three types of gastric ICC network structures from a flat-mount transgenic mouse stomach.
Results
The Fractal Dimension of ICC in the longitudinal muscle layer was found to be significantly lower than ICC in the myenteric plexus and circumferential muscle in the proximal, and distal antrum, respectively (both p < 0.0001). Conversely, the Lacunarity parameters for ICC-LM and ICC-CM were found to be significantly higher than ICC-MP in the proximal and in the distal antrum, respectively (both p < 0.0001). The Succolarity measures of ICC-LM network in the aboral direction were found to be consistently higher in the proximal than in the distal antrum (p < 0.05).
Conclusions
The fractal parameters presented here could go beyond the limitation of classical metrics to provide better understanding of the structural-functional relationship between ICC networks and the conduction of gastric bioelectrical slow waves.
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Data availability
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References
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Acknowledgements
The authors thank Perrine Hagué, Faculté de Médecine, Université Libre de Bruxelles, Belgium for technical assistance in mice breeding and tissue clearing, and Prof. Dieter Saur, School of Medicine, Technische Universität München, Germany for providing the KitCreERT2, R26mT-mG mice colony founders.
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This work was supported, in part, by grants from the Marsden Fund Council and Rutherford Foundation managed by The Royal Society Te Apārangi.
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Author SM conducted the conception of the study, technical analysis & statistic, and wrote the manuscript. JM provided the microscopic imaging data. RA and PD supervised the project. All authors took part in reviewing and editing the manuscript.
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Mah, S.A., Avci, R., Vanderwinden, JM. et al. Three-Dimensional Fractal Analysis of the Interstitial Cells of Cajal Networks of Gastrointestinal Tissue Specimens. Cel. Mol. Bioeng. 17, 67–81 (2024). https://doi.org/10.1007/s12195-023-00789-5
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DOI: https://doi.org/10.1007/s12195-023-00789-5