Accumulation of intimal platelets in cerebral arteries following experimental subarachnoid hemorrhage in cats

Journal Article · Fri Jul 01 00:00:00 EDT 1988 · Stroke; (United States)

DOI:https://doi.org/10.1161/01.STR.19.7.898· OSTI ID:6824684

Haining, J L; Clower, B R; Honma, Y; Smith, R R

From 2 hours to 23 days following experimental subarachnoid hemorrhage, the accumulation of indium-111-labeled platelets on the intimal surface of the middle cerebral artery was studied in 23 cats. Subarachnoid hemorrhage was produced by transorbital rupture of the right middle cerebral artery. Of the 23 cats, 17 exhibited right middle cerebral artery/left middle cerebral artery radioactivity ratios of greater than 1.25. When these results were compared with those of 12 control cats, 0.001 less than p less than 0.005 (chi2 test). Thus, the results from the control and experimental groups are significantly different and indicate early (after 2 hours) preferential accumulation of intimal platelets in the ruptured right middle cerebral artery compared with the unruptured left middle cerebral artery and new platelet deposition continuing for up to 23 days. However, the experimental group did not reveal a clear pattern for platelet accumulation following subarachnoid hemorrhage. There was no simple correlation between the magnitude of the radioactivity ratios and the time after hemorrhage when the cats were killed although the ratios for 2 hours to 7 days seemed greater than those for 8 to 23 days. Assuming the pivotal role of platelets in the angiopathy of subarachnoid hemorrhage, the administration of antiplatelet agents as soon as possible following its occurrence may be of value.

• Research Organization: Veterans Administration Medical Center, Jackson, MI (USA)
• OSTI ID: 6824684
• Journal Information: Stroke; (United States), Vol. 19:7
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
BLOOD PLATELETS
BIOLOGICAL ACCUMULATION
CEREBRAL ARTERIES
HEMORRHAGE
VASCULAR DISEASES
PATHOGENESIS
CATS
INDIUM 111
SURVIVAL CURVES
TRACER TECHNIQUES
ANIMALS
ARTERIES
BETA DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BLOOD VESSELS
BODY
BODY FLUIDS
CARDIOVASCULAR SYSTEM
DAYS LIVING RADIOISOTOPES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
INDIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
MAMMALS
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATHOLOGICAL CHANGES
RADIOISOTOPES
SYMPTOMS
VERTEBRATES
550901* - Pathology- Tracer Techniques