Comparative model of minimal spinal cord injury reveals a rather anti-inflammatory response in the lesion site as well as increased proliferation in the central canal lining in the neonates compared to the adult rats.

Autor: Ševc J; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Mochnacký F; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Košuth J; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Alexovič Matiašová A; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Slovinská L; Faculty of Medicine, Associated Tissue Bank, P. J. Šafárik University in Košice and L. Pasteur University Hospital, Košice, Slovak Republic.; Institute of Neurobiology, Biomedical Research Center, Slovak Academy of Sciences, Košice, Slovak Republic., Blaško J; Institute of Neurobiology, Biomedical Research Center, Slovak Academy of Sciences, Košice, Slovak Republic., Bukhun I; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Holota R; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic., Tomori Z; Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic., Daxnerová Z; Faculty of Science, Institute of Biology and Ecology, P. J. Šafárik University in Košice, Košice, Slovak Republic.
Jazyk: angličtina
Zdroj: Developmental neurobiology [Dev Neurobiol] 2024 Jul; Vol. 84 (3), pp. 169-190. Date of Electronic Publication: 2024 May 29.
DOI: 10.1002/dneu.22942
Abstrakt: Spinal cord injury (SCI) resulting from trauma decreases the quality of human life. Numerous clues indicate that the limited endogenous regenerative potential is a result of the interplay between the inhibitory nature of mature nervous tissue and the inflammatory actions of immune and glial cells. Knowledge gained from comparing regeneration in adult and juvenile animals could draw attention to factors that should be removed or added for effective therapy in adults. Therefore, we generated a minimal SCI (mSCI) model with a comparable impact on the spinal cord of Wistar rats during adulthood, preadolescence, and the neonatal period. The mechanism of injury is based on unilateral incision with a 20 ga needle tip according to stereotaxic coordinates into the dorsal horn of the L4 lumbar spinal segment. The incision should harm a similar amount of gray matter on a coronal section in each group of experimental animals. According to our results, the impact causes mild injury with minimal adverse effects on the neurological functions of animals but still has a remarkable effect on nervous tissue and its cellular and humoral components. Testing the mSCI model in adults, preadolescents, and neonates revealed a rather anti-inflammatory response of immune cells and astrocytes at the lesion site, as well as increased proliferation in the central canal lining in neonates compared with adult animals. Our results indicate that developing nervous tissue could possess superior reparative potential and confirm the importance of comparative studies to advance in the field of neuroregeneration.
(© 2024 Wiley Periodicals LLC.)
Databáze: MEDLINE
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