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Effects of peripheral inflammation on the blood-spinal cord barrier

DOI: 10.1186/1744-8069-8-44

Keywords: Blood-spinal cord barrier, Capsaicin, Carrageenan, Spinal cord, Occludin, Lumbar, Immunoglobulin, Female, Inflammation

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Abstract:

After peripheral carrageenan inflammation, but not capsaicin inflammation, immunohistochemistry shows occludin protein in lumbar spinal cord to be significantly altered at 72?hours post-injection. In addition, there is also significant immunoglobulin G detected in lumbar and thoracic spinal cord at this timepoint in both male and female rats. However, acute administration of sodium fluorescein or Evans Blue dyes is not detected in the parenchyma at this timepoint.Our results show that carrageenan inflammation induces changes in tight junction protein and immunoglobulin G accumulation, but these may not be indicative of a blood-spinal cord barrier breakdown. These changes appear transiently after peak nociception and may be indicative of reversible pathology that resolves together with inflammation.

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