Related Experiment Video
Updated: Jun 6, 2026

09:14
Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
Advances in experimental subarachnoid hemorrhage.
Yilin Zhou1, Robert D Martin, John H Zhang
1Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
Acta Neurochirurgica. Supplement
|December 1, 2010
Summary
Recent research in experimental subarachnoid hemorrhage (SAH) focuses on cerebral vasospasm (CVS) and early brain injury (EBI). Treatments targeting nitric oxide and endothelin pathways show promise for managing SAH complications.
Area of Science:
- Neuroscience
- Neurology
- Pathophysiology
Background:
- Subarachnoid hemorrhage (SAH) is a severe neurological condition with high mortality and morbidity.
- Cerebral vasospasm (CVS) and early brain injury (EBI) are key pathological processes following SAH.
Purpose of the Study:
- To summarize recent advances in experimental subarachnoid hemorrhage (SAH) research over the past three years.
- To highlight key pathophysiological pathways and potential therapeutic strategies for SAH.
Main Methods:
- Review of experimental studies on SAH published within the last three years.
- Analysis of research focusing on nitric oxide (NO) and endothelin pathways.
- Investigation into the role of Hypoxia-Inducible Factor 1 (HIF-1), inflammation, oxidative stress, and apoptosis in SAH.
Main Results:
- Treatments targeting NO and endothelin pathways demonstrate antispasmodic effects in experimental SAH.
- HIF-1 exhibits a dual role in SAH, potentially beneficial or detrimental based on activation.
- Inflammation, oxidative stress, and apoptosis are integral to the pathophysiology of both CVS and EBI.
Conclusions:
- CVS and EBI are major contributors to SAH outcomes.
- Understanding the underlying pathophysiological mechanisms is crucial for developing effective treatments.
- Targeting both CVS and EBI concurrently may improve patient outcomes in SAH.
Related Concept Videos
Hemorrhagic Stroke l: Introduction
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Hemorrhagic Stroke ll: Pathophysiology
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
