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Related Experiment Videos

SD-mice--an animal model for complex anorectal malformations.

D Kluth1, W Lambrecht, P Reich

  • 1Department of Pediatric Surgery, University Hospital Hamburg, Germany.

European Journal of Pediatric Surgery : Official Journal of Austrian Association of Pediatric Surgery ... [Et Al] = Zeitschrift Fur Kinderchirurgie
|June 1, 1991
PubMed
Summary

The SD mouse, a new animal model, exhibits anorectal malformations similar to human conditions. This offers a valuable resource for studying complex congenital defects in pediatric surgery.

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Area of Science:

  • Developmental biology
  • Genetics
  • Comparative morphology

Background:

  • Anorectal malformations (ARMs) are complex congenital anomalies.
  • Limited animal models exist for studying ARM morphology.
  • Pediatric surgeons require better models for investigation.

Purpose of the Study:

  • To describe the morphological characteristics of the spontaneous SD mouse mutation.
  • To evaluate the SD mouse as a model for anorectal malformations.
  • To compare SD mouse malformations with human and porcine conditions.

Main Methods:

  • Microdissection and serial sectioning of neonatal SD mice (SD/SD, SD/+) and controls.
  • Investigation of morphological features in 61 neonatal and 49 sectioned animals.

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  • Genetic analysis based on Mendelian inheritance patterns.

    • Main Results:

    • The semidominant SD gene affects the anorectum, urogenital system, and axial skeleton.
    • All homozygous (SD/SD) and some heterozygous (SD/+) SD mice displayed anorectal malformations.
    • A wide spectrum of malformations was observed, comparable to human and porcine ARMs.

    Conclusions:

    • The SD mouse is a viable animal model for morphological and embryonic research on complex anorectal malformations.
    • This model aids in understanding the developmental basis of ARMs.
    • Further research with SD mice can inform pediatric surgical interventions.