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Related Experiment Videos

"Wavy ribs". A reversible pathologic finding in rat fetuses

A Kast1

  • 1Boehringer Ingelheim GmbH, Germany.

Experimental and Toxicologic Pathology : Official Journal of the Gesellschaft Fur Toxikologische Pathologie
|August 1, 1994
PubMed
Summary

Wavy ribs in fetal rodents are a reversible finding caused by various compounds. High doses in reproductive toxicology may disrupt maternal circulation, impacting fetal development and bone formation.

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Area of Science:

  • Developmental toxicology
  • Teratology
  • Comparative pathology

Background:

  • Wavy ribs are a reversible pathological finding in rodent fetuses.
  • Numerous compounds administered during organogenesis can induce this condition.
  • Existing literature lacks a unified explanation for wavy rib etiology.

Purpose of the Study:

  • To critically examine the literature on wavy ribs in rodent fetuses.
  • To explore potential unifying hypotheses for the occurrence of wavy ribs.
  • To investigate the role of maternal and placental factors.

Main Methods:

  • Computer-assisted literature search (MEDLINE, TOXLINE, BIOSIS, EXCERPTA MEDICA, 1982-1993).
  • Critical examination of 74 scientific papers.
  • Literature review and hypothesis generation.

Main Results:

  • A wide variety of compounds induce wavy ribs in rat fetuses.
  • Identified potential causative factors include delayed alkaline phosphatase, reduced fetal protein, maternal toxicity, and circulatory disturbances.
  • A hypothesis is proposed linking high-dose reproductive toxicology to maternal/placental circulatory issues, impacting fetal serum proteins and bone development.

Conclusions:

  • High doses in reproductive toxicology may induce maternal and placental circulatory disturbances.
  • These disturbances can lead to reduced fetal serum proteins and delayed bone development.
  • Normalization of neonatal homeostasis facilitates bone repair until weaning.

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