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Related Experiment Videos

Craniorachischisis in a squirrel monkey.

C P Jerome

    Laboratory Animal Science
    |February 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    A stillborn squirrel monkey exhibited craniorachischisis, a severe congenital defect where the skull and spine are open. This rare condition involved absence of the calvarium and vertebral clefts, with neural tissue remnants observed.

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    Area of Science:

    • Veterinary Pathology
    • Developmental Biology
    • Primate Research

    Background:

    • Craniorachischisis is a rare and severe congenital malformation characterized by the failure of neural tube closure.
    • This defect results in the absence of the calvarium and a cleft in the vertebral column.
    • Understanding the etiology and presentation of craniorachischisis is crucial for veterinary and developmental studies.

    Observation:

    • A stillborn squirrel monkey fetus presented with complete craniorachischisis.
    • The defect extended from the foramen magnum to the midlumbar region, involving absent calvarium and cleft vertebral neural arches.
    • Remnants of cranial nerves and spinal cord tissue were observed, attached to the cranial base and within the spinal canal.

    Findings:

    • The observed craniorachischisis in the squirrel monkey represents the first documented case in a primate fetus.

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  • Degenerating neural tissue was noted, indicating developmental abnormalities.
  • Adrenal glands appeared normal, suggesting the defect was localized to the central nervous system axis.

    • Implications:

    • This case provides a unique model for studying the pathogenesis of craniorachischisis in primates.
    • Further research may elucidate genetic or environmental factors contributing to this rare condition.
    • Findings contribute to the comparative pathology of congenital defects in non-human primates.