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The purpose of the study was to experimentally substantiate the ways of pharmacological correction of somatic pain syndrome in conditions of the experimental equivalent of multiple sclerosis through a comparative system analysis and the use of complex methodological approaches. Materials and methods. To study multiple sclerosis, we used an experimental model with autoimmune mechanisms of inflammatory demyelination – a model of experimental allergic encephalomyelitis. To assess the antinociceptive activity of painkillers, we used the method of electrical stimulation of the rats’ tail root. The activity of the enzyme prostaglandin H-synthetase was also determined. Results and discussion. A comparative analysis of the analgesic activity indicators of combinations of methylprednisolone with analgesics under the condition of the formed experimental allergic encephalomyelitis showed that their antinociceptive potential (taking into account the basic therapy with methylprednisolone) decreased in the series meloxicam &gt; lornoxicam ≈ ketorolac ≈ paracetamol &gt; celecofenacoxib ≈ sodium diclofupene ≈ diclofupene ≈ diclofupene. Accordingly, the maximum effect on the threshold of nociception under these experimental conditions was exerted by meloxicam and lornoxicam. The combined administration of methylprednisolone with diclofenac sodium, celecoxib and meloxicam reduced the activity of prostaglandin N-synthetase in the brain structures by 49.8% (p &lt;0.05), 50.4% (p &lt;0.05) and 51% (p &lt;0.05), respectively, compared with the indicators of the control group. The same drugs markedly reduced the activity of prostaglandin N-synthetase in the spinal cord by 23.9% (p &lt;0.05) (Methylprednisolone + diclofenac), by 34% (p &lt;0.05) (Methylprednisolone + celecoxib) and by 47.4% (p &lt;0.05) (Methylprednisolone + meloxicam) compared with the control group. Our analysis of the analgesic activity of antidepressants and anticonvulsants as means of correcting nociceptive pain in experimental allergic encephalomyelitis found that their antinociceptive potential was inferior to the severity of the analgesic effect of nonsteroidal anti-inflammatory drugs. Conclusion. Among the studied non-steroidal anti-inflammatory drugs, antidepressants and anticonvulsants, the maximum therapeutic efficacy as a means of correcting nociceptive pain in experimental allergic encephalomyelitis against the background of basic methylprednisolone therapy was shown by meloxicam, which gives grounds to recommend it as the analgesic of choice for eliminating somatic pain syndromes

Study of Correction of Somatic Pain under the Conditions of Experimental Pathology of Multiple Sclerosis