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Neuroprotective eff...
Neuroprotective effects of nitric oxide synthase inhibitors in spinal cord injury-induced pathophysiology and motor functions: An experimental study in the rat.
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- Sharma, Hari Shanker (författare)
- Uppsala universitet,Institutionen för kirurgiska vetenskaper,Anaesthesiology and Intensive Care
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Badgaiyan, RD (författare)
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- Alm, Per (författare)
- Lund University,Lunds universitet,Tumörmikromiljö,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Tumor microenvironment,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine
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Mohanty, S (författare)
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- Wiklund, Lars (författare)
- Uppsala universitet,Institutionen för kirurgiska vetenskaper,Anaesthesiology and Intensive Care
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(creator_code:org_t)
- Wiley, 2005
- 2005
- Engelska.
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Ingår i: Annals of the New York Academy of Sciences. - : Wiley. - 0077-8923 .- 1749-6632. ; 1053, s. 422-434
- Relaterad länk:
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http://dx.doi.org/10...
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http://www.ncbi.nlm....
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The role of nitric oxide (NO) in spinal cord injury (SCI)-induced motor dysfunction, breakdown of the blood-spinal cord barrier (BSCB), edema formation, and cell injury was examined using a pharmacological approach. We used three types of nitric oxide synthase (NOS) inhibitors: a nonselective blocker, L-NAME; an irreversible inhibitor of all isoforms of NOS, L-NMMA; and a long-term competitive inhibitor of neuronal NOS with equal potency to inhibit endothelial NOS, L-NNA. The compounds were administered once daily in separate groups of rats for 7 days. On the 8th day, SCI was performed by making a longitudinal incision into the right dorsal horn of the T10-11 segments, and the rats were allowed to survive 5 h after injury. Long-term treatment with L-NNA attenuated SCI-induced NOS upregulation, BSCB breakdown, edema formation, and cell injury, whereas comparatively less neuroprotection is offered by L-NMMA. The magnitude of neuroprotection is much less evident in injured animals that received L-NAME. Interestingly, SCI-induced motor dysfunction measured according to the Tarlov scale showed close correlation with the magnitude of neuroprotection. Thus, an improvement in motor function was seen in animals pretreated with L-NNA, whereas rats treated with L-NAME or L-NMMA did not show any influence on motor dysfunction after SCI. This observation suggests that inhibition of neuronal NOS is important for neuro-protection, and the disturbances in motor function following SCI are associated with the state of spinal cord pathology.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
Nyckelord
- cell injury
- formation
- edema
- blood-spinal cord barrier
- endothelial NOS
- L-NMMA
- neuronal NOS
- L-NNA
- L-NAME
- nitric oxide synthase
- spinal cord injury
- nitric oxide
- motor dysfunction
- spinal cord pathology
- MEDICINE
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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