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Bovine bladder compliance increases with normal fetal development

L Baskin1, D Meaney, A Landsman

  • 1Division of Urology, Children's Hospital of Philadelphia, Pennsylvania.

The Journal of Urology
|August 1, 1994
PubMed
Summary
This summary is machine-generated.

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The bovine fetal bladder becomes more compliant with increasing gestational age, transitioning from stiff to soft. This change in elastic properties may be linked to urine production and aging.

Area of Science:

  • Biomedical Engineering
  • Developmental Biology
  • Urology

Background:

  • The elastic properties of the bladder are crucial for its function.
  • Understanding bladder development and aging is important for diagnosing and treating urinary tract conditions.

Purpose of the Study:

  • To characterize the elastic properties of the normal bovine bladder throughout development, from fetal life to adulthood.
  • To investigate the relationship between bladder elasticity and developmental milestones such as urine production.

Main Methods:

  • A novel circularly clamped bladder testing system was used to measure bladder elasticity.
  • Pressurization of bladder tissue samples allowed for the determination of the elastic modulus (inverse of compliance) using linear regression.

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Main Results:

  • The elastic modulus decreased proportionally with increasing gestational age, indicating increasing bladder compliance during fetal development.
  • Bladder compliance increased significantly around the time of first urine production.
  • A modest increase in elastic modulus (decrease in compliance) was observed from the newborn to adult stages, suggesting an aging effect.

Conclusions:

  • Bovine fetal bladder development involves a progressive transition from a stiff, noncompliant state to a compliant state, influenced by urine production.
  • The poorly compliant fetal bladder may contribute to in utero upper urinary tract dilatations.
  • Aging leads to a slight decrease in bladder compliance in adult bovines.