Effects of Middle Cerebral Artery Occlusion on Apoptosis in Rats
Author Information
Author(s): Mark Britton, Jose Rafols, Sarah Alousi, Joseph C. Dunbar
Primary Institution: Wayne State University School of Medicine
Hypothesis
How does middle cerebral artery occlusion affect apoptosis in normal and diabetic rats?
Conclusion
Focal cerebral ischemia significantly increases apoptosis in both normal and diabetic rats, with diabetes exacerbating the effect.
Supporting Evidence
- Diabetic rats showed significant increases in TUNEL-positive and caspase-3-positive cells compared to normal controls.
- Both TUNEL staining and caspase-3 immunohistochemistry revealed increased apoptosis in diabetic animals.
- Focal cerebral ischemia was associated with a significant increase in apoptosis in nondiabetic rats.
Takeaway
When blood flow to the brain is blocked, more brain cells die in diabetic rats than in normal ones.
Methodology
The study used TUNEL staining and caspase-3 immunohistochemistry to assess apoptosis in brain tissues of normal and diabetic rats subjected to middle cerebral artery occlusion.
Limitations
The study did not correlate the frequency of apoptosis with blood glucose levels.
Participant Demographics
Fisher-344 rats, weighing 250 to 350 g, with some induced to be diabetic.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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