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Anatomy of the Intestines01:23

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
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Aging01:26

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The small intestine is primarily responsible for digestion and nutrient absorption. It spans from the pyloric sphincter to the ileocecal valve and connects to the large intestine.
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The large intestine is divided into three main regions: the cecum, colon, and rectum. Extending from the ileocecal valve to the anus, it frames the small intestine on three sides.
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Isolating Intestinal Stem Cells from Adult Drosophila Midguts by FACS to Study Stem Cell Behavior During Aging
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Adult Intestine Aging Model.

Koji Takeda1, Takashi Okumura1, Kiichiro Taniguchi1

  • 1Department of Life Science, Faculty of Science, Gakushuin University, Tokyo, Japan.

Advances in Experimental Medicine and Biology
|June 29, 2018
PubMed
Summary

Aging in Drosophila midguts reveals cellular changes like multilayering and stem cell overgrowth, offering insights into mammalian intestinal aging mechanisms. This study overviews these molecular processes and observation methods.

Keywords:
AstADh31DlDrosophilaISCsIntegrinJNKMidgutSenescenceUpd

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Area of Science:

  • * Developmental Biology
  • * Gerontology
  • * Cell Biology

Background:

  • * The Drosophila adult intestine shares cellular and structural similarities with mammalian intestines.
  • * Aging in the Drosophila intestine manifests as absorptive cell multilayering, gene misexpression, and stem cell hyperproliferation.

Purpose of the Study:

  • * To overview the molecular mechanisms underlying senescence in the Drosophila adult midgut.
  • * To explore the relationship between Drosophila midgut aging and mammalian intestinal aging.
  • * To describe a method for observing aged midgut phenotypes in Drosophila.

Main Methods:

  • * Review of recent studies on gene networks involved in aged phenotypes.
  • * Description of a basic methodology for observing Drosophila midgut aging.
  • * Comparative analysis of aging mechanisms between Drosophila and mammals.

Main Results:

  • * Identified gene networks contributing to age-related intestinal phenotypes in Drosophila.
  • * Characterized specific aging hallmarks in the Drosophila midgut, including multilayering and stem cell behavior.
  • * Established parallels between Drosophila and mammalian intestinal aging processes.

Conclusions:

  • * Drosophila serves as a valuable model for studying intestinal aging.
  • * Understanding Drosophila midgut senescence provides insights into conserved molecular mechanisms of aging.
  • * The described methods facilitate further research into age-related intestinal decline.