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Updated: Jul 19, 2026
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A Preclinical Controlled Cortical Impact Model for Traumatic Hemorrhage Contusion and Neuroinflammation
Published on: June 10, 2020
[Changes of cyclin D1 expression following human brain contusion]
Yi-Wu Zhou1, Ai-Wu Xiao, Wei-Nian Deng
1Department of Forensic Medicine, Shantou Medical College, Shantou University, Shantou 515031, China. yiwuhedi@hotmail.com
Fa Yi Xue Za Zhi
|November 4, 2006
Summary
Cyclin D1 expression rapidly increases in brain cells after contusion injury, particularly in glia. This makes Cyclin D1 a potential early biomarker for traumatic brain injury.
Area of Science:
- Neuroscience
- Cell Biology
- Immunohistochemistry
Context:
- Traumatic brain injury (TBI) diagnosis and prognosis remain challenging.
- Understanding cellular responses to brain contusions is crucial for developing effective treatments.
Purpose:
- To investigate the temporal expression patterns of Cyclin D1 in brain contusions following closed head injury.
- To determine if Cyclin D1 can serve as an early diagnostic marker for brain injury.
Summary:
- Cyclin D1 immunoreactivity was assessed in 88 human brain contusion cases using immunohistochemistry and image analysis.
- Cyclin D1 expression was minimal in contusion cores but significantly increased in boundary cells, primarily microglia and glia, within hours of injury.
- Elevated Cyclin D1 levels persisted for up to 30 days post-injury.
Impact:
- Cyclin D1 expression dynamics provide insights into cellular repair mechanisms following TBI.
- The rapid and significant increase in Cyclin D1-positive cells suggests its utility as a reliable biomarker for early-stage brain contusions.
