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Intracranial Pressure Monitoring In Nontraumatic Intraventricular Hemorrhage Rodent Model
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Intracranial pressure changes during mouse development.

Mehran Moazen1, Ali Alazmani2, Katherine Rafferty3

  • 1Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.

Journal of Biomechanics
|December 2, 2015
PubMed
Summary
This summary is machine-generated.

Intracranial pressure (ICP) increases significantly during early mouse development, correlating with cranial bone growth. This suggests ICP may influence bone formation at skull sutures in young mammals.

Keywords:
BiomechanicsDevelopmentIntracranial pressureSkullSuture

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Area of Science:

  • Developmental biology
  • Biomechanics
  • Craniofacial development

Background:

  • During early postnatal development, the growing brain and cerebrospinal fluid generate intracranial pressure (ICP).
  • This pressure loads calvarial bones, potentially influencing bone formation at sutures, especially during rapid brain growth after birth.

Purpose of the Study:

  • To quantify intracranial pressure (ICP) changes throughout mouse postnatal development.
  • To investigate the relationship between ICP dynamics and cranial growth patterns.

Main Methods:

  • Developed and calibrated a custom pressure monitoring system for ICP measurement.
  • Measured ICP in 73 wild-type mice across five postnatal age points (P3, P10, P20, P31, P70).
  • Utilized micro-computed tomography (micro-CT) to assess cranial volume and skull length in age-matched samples.

Main Results:

  • ICP increased from 1.33±0.87 mmHg at P3 to 3.60±1.08 mmHg at P20, then plateaued around 4 mmHg in older mice.
  • Statistically significant differences in ICP were observed between P3 vs. P20 and P10 vs. P20.
  • Intracranial volume and skull length showed a similar growth pattern, increasing up to P20 before plateauing.

Conclusions:

  • The observed correlation between rising ICP and cranial growth suggests ICP may be a contributing factor to calvarial bone formation at sutures during early development.
  • These findings provide valuable data for computational modeling of skull growth and validation.