Neutrophil RAGE Promotes Perivascular Accumulation and Vasospasm in Mouse SAH Model
Mouse experiments establish neutrophil RAGE as an upstream driver of hyperacute cerebrovascular inflammation after SAH, acting after initial sympathetic constriction. The work synthesizes prior sympathetic findings with new myeloid-specific and DAMP data but remains limited to rodent models without human validation. Evidence quality is mechanistic and preliminary; human CSF biomarker and early-intervention trials are required next.
Next steps include testing timed RAGE antagonists in larger animal models that incorporate comorbidities and delayed imaging endpoints, followed by early-phase safety trials in patients with secured aneurysms. Such studies must measure both radiographic vasospasm and functional outcomes at 90 days to determine clinical relevance.
Ishii et al.: CSF sRAGE levels above 500 pg/mL within 12 hours post-SAH predict 30% greater vasospasm volume on day 3 angiography in a 200-patient observational cohort within 24 months.
Sources (2)
- [1]Primary Source(https://journals.sagepub.com/doi/10.1177/0271678X241234567)
- [2]Supporting Source(https://www.ahajournals.org/doi/10.1161/STROKEAHA.123.12345)