Spinal cord edema, 5-hydroxytryptamine, lipid peroxidation, and lysosomal enzyme release after acute contusion and compression injury in primates.
Physical and biochemical changes in the spinal cord of monkeys at 1/2, 2, and 4 hours following 200 g cm contusion injury and 50 g of compression injury and 2 hours of decompression following 4 hours of compression were studied. The pathophysiologic changes were milder in compression compared to contusion injury. Following contusion injury, at 1/2 and 2 hours there was significant increase in % water content, lipid peroxidation, and alpha-L-fucosidase. alpha-D-Mannosidase was significantly increased at all time periods, and beta-D-hexosaminidase was increased at 1/2 and 4 hours. At 4 hours following injury, serotonin (5 HT) and 5-hydroxyindole-3-acetic acid (5-HIAA) showed a significant increase. From 10 minutes to 2 hours there was increased platelet aggregation. In compression injury, a significant increase in water content and 5 HT was observed only at 1/2 hour. Lipid peroxidation had increased at all time periods, whereas B-D-hexosaminidase, beta-D-galactosidase, and 5-HIAA were increased at 2 hours. alpha-D-Mannosidase had increased at 1/2 and 2 hours, and alpha-L-fucosidase had increased at 4 hours. After 2 hours decompression following 4 hours compression, water content, beta-D-galactosidase, and alpha-D-Mannosidase were significantly increased. An attempt was made to correlate the findings and to understand the sequential pathophysiologic changes in the first 4 hours following spinal cord trauma, providing a baseline for evaluation of the efficacy of any therapeutic maneuvers.
J
J
Abraham
A S
AS
Balasubramanian
D R
DR
Theodore
S
S
Nagarajan
C A
CA
Apte
S
S
Chandi
D000208:Acute Disease; D000818:Animals; D003288:Contusions / Q000378:metabolism* / Q000503:physiopathology; D004487:Edema / Q000209:etiology*; D005260:Female; D005696:Galactosidases / Q000134:cerebrospinal fluid; D006596:Hexosaminidases / Q000134:cerebrospinal fluid; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism; D008054:Lipid Peroxides / Q000378:metabolism*; D008247:Lysosomes / Q000201:enzymology*; D008255:Macaca radiata; D008297:Male; D008361:Mannosidases / Q000134:cerebrospinal fluid; D010974:Platelet Aggregation; D012701:Serotonin / Q000378:metabolism*; D013116:Spinal Cord / Q000378:metabolism; D013117:Spinal Cord Compression / Q000378:metabolism* / Q000503:physiopathology; D013118:Spinal Cord Diseases / Q000209:etiology*; D013119:Spinal Cord Injuries / Q000378:metabolism* / Q000503:physiopathology; D013997:Time Factors; D005644:alpha-L-Fucosidase / Q000134:cerebrospinal fluid
D008054:Lipid Peroxides; D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D005696:Galactosidases; D006596:Hexosaminidases; D008361:Mannosidases; D005644:alpha-L-Fucosidase