Angiopoietin-1 and its Role in Cerebral Vasospasm After Subarachnoid Hemorrhage
Author Information
Author(s): Marlene Fischer, Gregor Broessner, Anelia Dietmann, Ronny Beer, Raimund Helbok, Bettina Pfausler, Andreas Chemelli, Erich Schmutzhard, Peter Lackner
Primary Institution: Innsbruck Medical University
Hypothesis
The angiopoietin system is altered in patients developing severe vasospasm and radiographic infarcts after subarachnoid hemorrhage.
Conclusion
Ang-1 levels are significantly altered in patients suffering from subarachnoid hemorrhage, particularly in those experiencing cerebral vasospasm and ischemia.
Supporting Evidence
- SAH patients showed a significant drop of Ang-1 levels on day 2 and 3 post SAH compared to baseline and healthy controls.
- Patients who developed cerebral vasospasm had significantly lower levels of Ang-1.
- Differences in Ang-2 levels between SAH patients and healthy controls were not statistically significant.
Takeaway
This study found that a protein called Ang-1 drops in patients with a type of brain bleeding, which might help explain why some of them have problems with blood flow in their brains.
Methodology
The study included 20 patients with subarachnoid hemorrhage and 20 healthy controls, measuring Ang-1 and Ang-2 levels in serum samples and monitoring cerebral vasospasm using transcranial Doppler sonography.
Limitations
The study included a small number of patients and relied on transcranial Doppler evaluations for diagnosing cerebral vasospasm.
Participant Demographics
Patients' ages ranged from 31 to 66 years, with 4 males and 16 females.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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