Subarachnoid hemorrhage in the rat: cerebral blood flow and glucose metabolism after selective lesions of the catecholamine systems in the brainstem
A double-isotope autoradiographic technique was used to evaluate CBF and glucose metabolism 2 days after a subarachnoid hemorrhage (SAH) in rats with lesions in the lower brainstem. Lesioning in the mesencephalon of the ascending catecholamine pathways from locus ceruleus and from the A1 and A2 nuclei, or lesioning in the medulla oblongata of the ascending fibers from A1 and A2, prevents the development of the global changes in flow and metabolism seen in normal animals post SAH. Also the focal low-flow areas with markedly elevated deoxyglucose uptake, which can develop in normal animals 2 days post SAH, were not seen in the lesioned animals after the SAH. The findings indicate that the A1 and A2 nuclei, which project to the hypothalamus-pituitary, are essential for the flow and metabolic changes after an SAH. The lesions per se did not change baseline flow and metabolism as compared with sham-lesioned animals.
- Research Organization:
- University Hospital, Lund, Sweden
- OSTI ID:
- 6990334
- Journal Information:
- J. Cereb. Blood Flow Metab.; (United States), Vol. 5
- Country of Publication:
- United States
- Language:
- English
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BRAIN
BLOOD FLOW
GLUCOSE
METABOLISM
ANTIPYRINE
AUTORADIOGRAPHY
CARBON 14 COMPOUNDS
CATECHOLAMINES
DOUBLE LABELLING
RATS
TRITIUM COMPOUNDS
ALDEHYDES
AMINES
ANIMALS
ANTIPYRETICS
AROMATICS
AZOLES
BODY
CARBOHYDRATES
CENTRAL NERVOUS SYSTEM
CENTRAL NERVOUS SYSTEM DEPRESSANTS
DRUGS
HETEROCYCLIC COMPOUNDS
HEXOSES
HYDROXY COMPOUNDS
LABELLED COMPOUNDS
LABELLING
MAMMALS
MONOSACCHARIDES
NERVOUS SYSTEM
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANS
PHENOLS
POLYPHENOLS
PYRAZOLES
PYRAZOLINES
RODENTS
SACCHARIDES
VERTEBRATES
551001* - Physiological Systems- Tracer Techniques