Effects of naftidrofuryl oxalate on microsphere embolism-induced decrease in regional blood flow of rat brain

Area of Science:

• Neuroscience
• Pharmacology
• Cerebrovascular Research

Background:

• Cerebral ischemia, often caused by blood clots, leads to reduced blood flow and brain damage.
• Vasodilators are medications that widen blood vessels, potentially improving circulation.
• Naftidrofuryl oxalate is a vasodilator investigated for its effects on cerebral blood flow.

Purpose of the Study:

• To investigate the efficacy of naftidrofuryl oxalate in enhancing regional brain blood flow in a rat model of sustained cerebral ischemia.
• To assess the impact of naftidrofuryl oxalate on the development and extent of cerebral infarction.

Main Methods:

• Cerebral ischemia was induced in rats using microsphere embolism in the internal carotid artery.
• Regional cerebral blood flow was measured using the hydrogen clearance method at 3, 7, and 28 days post-ischemia.
• Brain tissue was analyzed using triphenyltetrazolium chloride (TTC) staining to identify areas of infarction.

Main Results:

• Microsphere embolism caused sustained reductions in cortical and striatal blood flow, and initial hippocampal blood flow reduction.
• Naftidrofuryl oxalate treatment increased striatal and hippocampal blood flow on day 3 but not later.
• TTC staining revealed smaller infarct areas in naftidrofuryl-treated rats on days 3 and 7, indicating delayed infarction development.

Conclusions:

• Naftidrofuryl oxalate demonstrates potential in improving cerebral circulation compromised by microsphere-induced ischemia.
• The enhanced cerebral blood flow associated with naftidrofuryl treatment may contribute to the observed delay in cerebral infarction development.
• Further research is warranted to explore naftidrofuryl oxalate's therapeutic role in ischemic stroke management.