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Related Experiment Videos

Morphologic development of the adrenal cortex in squirrel monkeys (Saimiri sciureus).

C J Miller1, S Prahalada, C Coe

  • 1California Primate Research Center, University of California, Davis.

Journal of Medical Primatology
|January 1, 1990
PubMed
Summary

The squirrel monkey adrenal gland undergoes significant morphological changes in the perinatal period. The fetal zone regresses, while the definitive zone differentiates into distinct layers by day 18 postpartum.

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Area of Science:

  • Primate developmental biology
  • Comparative anatomy
  • Endocrinology

Background:

  • The adrenal gland is crucial for stress response and development.
  • Perinatal adrenal morphology varies across species.
  • Understanding primate adrenal development is key to reproductive biology.

Purpose of the Study:

  • To detail the morphological changes of the squirrel monkey adrenal gland during the perinatal period.
  • To characterize the development and differentiation of the adrenal cortex zones.

Main Methods:

  • Histological examination of squirrel monkey adrenal glands.
  • Analysis of specimens from fetal, stillborn, neonatal, and postpartum stages.

Main Results:

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  • Fetal squirrel monkey adrenals exhibit a prominent fetal zone and a developing definitive zone.
  • Neonatal adrenals show a reduced fetal zone and differentiated zona fasciculata and glomerulosa.
  • The fetal zone completely regresses by 18 days postpartum.

    • Conclusions:

    • The squirrel monkey adrenal gland undergoes rapid differentiation postnatally.
    • The definitive zone's development is established within the first few weeks of life.
    • This study provides a baseline for primate adrenal gland development.