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Exploring swine oviduct anatomy through micro-computed tomography: a 3D modeling perspective.

Ramses Belda-Perez1,2, Costanza Cimini1, Luca Valbonetti1

  • 1Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.

Frontiers in Veterinary Science
|September 18, 2024
PubMed
Summary

This study used micro-computed tomography to reveal distinct anatomical differences between the uterotubal junction (UTJ) and ampullary-isthmic junction (AIJ) oviduct regions. These findings are crucial for developing biomimetic oviduct-on-a-chip systems.

Keywords:
3D-reconstructionampullary-isthmic junctionmicroCToviductswine modelutero tubal junction

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Area of Science:

  • Reproductive biology and anatomy
  • Biomedical engineering
  • Medical imaging and analysis

Background:

  • The oviduct is vital for fertilization and early embryonic development.
  • Mimicking the oviduct environment improves in vitro embryo reprogramming and system yield.
  • Understanding oviductal anatomy is key for developing advanced reproductive technologies.

Purpose of the Study:

  • To explore and 3D-reconstruct the anatomical intricacies of the uterotubal junction (UTJ) and ampullary-isthmic junction (AIJ).
  • To characterize structural features, including fold dimensions, fractal dimension, lacunarity, and shape factor.
  • To provide a foundation for creating accurate biomimetic oviduct-on-a-chip models.

Main Methods:

  • Micro-computed tomography (MicroCT) for high-resolution imaging.
  • 3D reconstruction of oviductal structures.
  • Quantitative analysis of oviductal fold dimensions, fractal dimension, lacunarity, and shape factor.

Main Results:

  • Distinct structural differences were identified between the UTJ and AIJ.
  • UTJ exhibits small, uniform folds with high lacunarity; AIJ shows larger folds with lower lacunarity.
  • Fractal dimension analysis indicated higher structural complexity in the AIJ (1.559-1.770) compared to the UTJ (1.189-1.1779).
  • Presence of blind sacs/crypts suggests potential roles in sperm sequestration.

Conclusions:

  • Morphological variations in UTJ and AIJ correlate with functional differences.
  • MicroCT technology enables detailed 3D anatomical characterization of the oviduct.
  • This research supports the development of biomimetic oviduct-on-a-chip systems for improved reproductive applications.