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Related Experiment Videos

Apoptosis in murine duodenum during embryonic development.

W Cheng1, P K Tam

  • 1Department of Surgery, The University of Hong Kong Medical Centre, Queen Mary Hospital, China.

Pediatric Surgery International
|November 1, 2000
PubMed
Summary
This summary is machine-generated.

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Apoptosis does not appear to cause the duodenum

Area of Science:

  • Developmental Biology
  • Gastrointestinal Development
  • Cellular Biology

Background:

  • Duodenal development involves a solid-core stage followed by recanalization.
  • Apoptosis, or programmed cell death, is a key process in embryonic development.
  • The precise role of apoptosis in duodenal lumen widening and its link to duodenal atresia remain unclear.

Purpose of the Study:

  • To investigate the role of apoptosis in normal duodenal development, specifically during lumen widening.
  • To explore the potential involvement of apoptosis in the pathogenesis of duodenal atresia (DA).

Main Methods:

  • Utilized Sprague-Dawley rat fetuses (gestation days 13-20).
  • Quantified apoptosis using the terminal deoxytransferase-mediated biotin dUTP nick-end labeling (TUNEL) technique.

Related Experiment Videos

  • Measured apoptotic cell counts and duodenal cross-sectional areas using image analysis software.

    • Main Results:

    • Apoptotic cell counts peaked on gestational days 14-15 in different duodenal layers.
    • Duodenal lumen and wall areas increased exponentially between days 17-19.
    • Duodenal wall thickness remained relatively constant during development.

    Conclusions:

    • The timing, localization, and intensity of apoptosis do not support its role in duodenal lumen widening.
    • Duodenal lumen enlargement is primarily attributed to an increase in duodenal circumference.
    • Apoptosis is unlikely to be a significant factor in the pathogenesis of duodenal atresia.