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Related Concept Videos

Teratogenicity01:07

Teratogenicity

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The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
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Protocol of Geometric Morphometrics for Teratogenicity Testing.

Mariana Caipira Lei1, Luís Félix2,3, Carlos Venâncio2,3,4

  • 1Animal and Veterinary Department, University Institute of Health Sciences, CESPU, CRL, Gandra, Portugal. mariana.lei@iucs.cespu.pt.

Methods in Molecular Biology (Clifton, N.J.)
|January 29, 2024
PubMed
Summary

Geometric morphometrics (GM) provides precise shape analysis for identifying developmental malformations. This method aids in linking specific teratogens to unique phenotypic signatures and molecular pathways.

Keywords:
Developmental periodEmbryonic morphologyLandmarksMorphometric analysisProcrustes methodStatistical calculationTeratogenic malformations

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Area of Science:

  • Developmental Biology
  • Morphometrics
  • Toxicology

Background:

  • Traditional biometric methods lack the detail needed for precise malformation analysis.
  • Geometric morphometrics (GM) offers a more detailed and precise approach to shape analysis.
  • Characterizing teratogenic malformations is crucial for understanding developmental toxicity.

Purpose of the Study:

  • To describe the application of geometric morphometrics for characterizing developmental malformations.
  • To highlight the advantages of GM over traditional biometric techniques.
  • To advance the ability to link teratogens to specific phenotypic outcomes.

Main Methods:

  • Utilized the Procrustes method for shape analysis.
  • Employed ImageJ and MorphoJ software for geometric morphometric analysis.
  • Applied GM to quantify and characterize teratogenic malformations.

Main Results:

  • Demonstrated the high detail and precision of GM in analyzing shapes.
  • Successfully applied GM to characterize developmental malformations.
  • Showcased the potential for assigning molecular pathways to teratogens based on phenotypes.

Conclusions:

  • Geometric morphometrics is a powerful tool for the detailed characterization of malformations.
  • This methodology enhances the identification and classification of teratogenic effects.
  • GM facilitates the potential discovery of unique signatures for specific teratogens.