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- W2064758814 abstract "<i>Objectives:</i> Multiple sclerosis can be characterized by a strong neuroinflammatory and progressive neurodegenerative component leading to prolonged disability. The synthetic compound R(+)WIN55,212-2 is reported to be neuroprotective at moderate doses and both neuroprotective and immunomodulatory at high doses, most likely due to differences in receptor affinities. In order to investigate the effects of neuroprotection and immunomodulation in an animal model of multiple sclerosis, we examined the impact of increasing concentrations of R(+)WIN55,212-2 on the inflammatory profile in CNS during first relapse and related this to demyelination, axonal degeneration and relapse severity. <i>Methods:</i> Experimental autoimmune encephalomyelitis was induced in Dark Agouti rats and treatment with R(+)WIN55,212-2 was initiated at symptom debut. The animals were scored clinically throughout the experiment, and axonal degeneration, demyelination, T cells, microglia/macrophages, TNF-α, IL-12, IFN-γ, IL-10 and the T<sub>H</sub>17 response were estimated at the peak of the first relapse. <i>Results:</i> Treatment with high-dose R(+)WIN55,212-2 (10 and 20 mg/kg) significantly improved the clinical performance of the animals during relapse. Interestingly, treatment at any dosage did not affect the brain levels of TNF-α, IL-12 and IFN-γ (T<sub>H</sub>1 response), whereas high-dose cannabinoid treatment reduced the number of T cells and microglia/macrophages in addition to the T<sub>H</sub>17 response. At the same time, we observed a significant reduction in axonal degeneration in all treatment groups whereas only high-dose treatment resulted in reduced demyelination. <i>Conclusion:</i> High-dose R(+)WIN55,212-2 treatment reduces demyelination and axonal degeneration and has immunomodulatory effects which significantly improve clinical performance, whereas a reduction in axonal degeneration on its own, induced by 5 mg/kg R(+)WIN55,212-2, has no impact on first relapse severity." @default.
- W2064758814 created "2016-06-24" @default.
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- W2064758814 date "2010-01-01" @default.
- W2064758814 modified "2023-09-23" @default.
- W2064758814 title "Neuroprotection without Immunomodulation Is Not Sufficient to Reduce First Relapse Severity in Experimental Autoimmune Encephalomyelitis" @default.
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- W2064758814 doi "https://doi.org/10.1159/000290041" @default.
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