alexa Regional brain glycogen stores and metabolism during complete global ischaemia.
Physicaltherapy & Rehabilitation

Physicaltherapy & Rehabilitation

Journal of Sports Medicine & Doping Studies

Author(s): Swanson RA, Sagar SM, Sharp FR

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Abstract Microwave fixation in situ was used to assess regional glycogen and glucose stores in normal rat brain. Glycogen levels were highest in the cerebellum and pons/medulla (38.0 and 35.6 nmol/mg protein), and lowest in the striatum and cerebral cortex (17.4 and 23.6 nmol/mg protein respectively). Glucose concentrations paralleled glycogen, ranging from 5.9 to 10.8 nmol/mg protein. Glycogen, glucose, and lactate were measured during complete global ischaemia (decapitation) to assess regional differences in ischaemic metabolism. Those regions which in normal brain contain higher glycogen and glucose stores were found to maintain significantly higher levels of glycogen and glucose for at least 2 minutes of ischaemia. Lactate accumulated to highest levels after 30 minutes of ischaemia in those regions with highest glucose and glycogen stores. Lactate levels did not, however, rise above 90 nmol/mg protein in any brain region, a level well below that considered potentially neurotoxic. The data indicate considerable regional differences in normal and ischaemic glycogen metabolism that might contribute to known regional differences in vulnerability to global ischaemia.
This article was published in Neurol Res and referenced in Journal of Sports Medicine & Doping Studies

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