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Endothelial Cell Co-culture Mediates Maturation of Human Embryonic Stem Cell to Pancreatic Insulin Producing Cells in a Directed Differentiation Approach
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[Differentiation of human pancreatic endocrine cells in the period of fetal development]

A A Puzyrev1, V F Ivanova

  • 1Department of Biomedical Research, Central Scientific Research Laboratory, St. Petersburg I.I. Metchnikov State Medical Academy.

Morfologiia (Saint Petersburg, Russia)
|May 14, 2003
PubMed

Insights

This study quantifies changes in pancreatic endocrine cells during human fetal development. Key differences in organelle and secretory granule volume densities reveal insights into cell differentiation processes.

Area of Science:

  • Endocrinology
  • Cell Biology
  • Developmental Biology

Context:

  • Pancreatic endocrine cells, specifically A and B cells, are crucial for regulating blood glucose.
  • Human fetal development involves complex cellular differentiation processes.
  • Understanding early pancreatic cell development is vital for diagnosing and treating metabolic disorders.

Purpose:

  • To perform stereological analysis of pancreatic endocrine A and B cells in human fetuses (gestational months 4-7).
  • To assess and compare the volume densities of various organelles and secretory granules during differentiation.
  • To present morphometric characteristics and quantitative data on the structural organization of these cells.

Summary:

  • Stereological analysis of electron micrographs from human fetal pancreatic endocrine cells (months 4-7) was conducted.
  • Volume densities of mitochondria, rough endoplasmic reticulum, Golgi complex, polysomes, and secretory granules were assessed.
  • Significant differences in organelle and secretory granule volume density ratios were observed during cell differentiation, providing quantitative data on structural organization.

Impact:

  • Provides foundational quantitative data on human pancreatic endocrine cell differentiation.
  • Offers insights into the structural basis of metabolic regulation during early development.
  • Contributes to the understanding of normal pancreatic development, aiding in the study of congenital metabolic diseases.

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