The casual association of cervical spinal cord ischemia and axonal degeneration in second motor neuron following subarachnoid hemorrhage: Experimental study.
J Clin Neurosci
; 66: 235-238, 2019 08.
Article
in En
| MEDLINE
| ID: mdl-31153749
ABSTRACT
AIM:
Muscle abnormalities after spinal cord ischemia caused by subarachnoid hemorrhage (SAH) have not been explored for degenerative variations in the soma of second motor neurons of the spinal cord gray matter. This study aimed to investigate histopathological alterations in the gray matter and the role of peripheral nerves in SAH. MATERIAL ANDMETHODS:
Twenty-two rabbits were allocated in the control (Group I, nâ¯=â¯5), SHAM (Group II, nâ¯=â¯5), and research (Group III, nâ¯=â¯12) groups. Muscle weakness of the upper extremities innervated by radial nerves was evaluated at the initial day, and outcomes were recorded as control data. Re-measurements were done after injecting 0.5â¯ml of SF for SHAM and autolog artery blood inside craniocervical subarachnoid space for the study group. After 3â¯weeks, radial nerve roots, their ganglia, and segments of the spinal cord around C5-6 root entry zones were extracted bilaterally. Degenerated second motor neuron somas and the degenerated radial nerve motor axons at the intervertebral foramen were assessed.RESULTS:
The average degenerated soma intensity/mm3 at the C5-6 levels in the spinal cord was 2⯱â¯1/mm3, 13⯱â¯4/mm3, and 56⯱â¯10/mm3 for Groups I, II, and Group III. The average degenerated axon intensity of radial nerves was 3⯱â¯1/mm2, 34⯱â¯9/mm2, and 234⯱â¯78/mm2 for Groups I, II, and III.CONCLUSION:
Gray matter ischemia in the spinal cord may lead to axonal deterioration on equal levels at the peripheral nerves with advanced SAH. Detected or undetected spinal SAH should be considered an important factor on the etiology of second motor neuron diseases.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radial Nerve
/
Subarachnoid Hemorrhage
/
Axons
/
Spinal Cord Ischemia
/
Cervical Cord
/
Nerve Degeneration
Type of study:
Etiology_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Animals
Language:
En
Journal:
J Clin Neurosci
Journal subject:
NEUROLOGIA
Year:
2019
Document type:
Article
Affiliation country:
Turkey