Gould HJ, Gould TN, Paul D, England JD, Liu ZP, Reeb SC, Levinson SR. Development of inflammatory hypersensitivity and augmentation of sodium channels in rat dorsal root ganglia.
Brain Res 1999;
824:296-9. [PMID:
10196462 DOI:
10.1016/s0006-8993(99)01218-4]
[Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The development of thermal allodynia in relationship to sodium channel augmentation in dorsal root ganglia (DRGs) was studied in albino rats. Paw withdrawal latencies were measured hourly following complete Freund's adjuvant (CFA) injections. Sodium channels were demonstrated with immunocytochemistry. Sustained minimum latencies were attained between 10 and 12 h post-injection. Sodium channel labeling began to increase at 23 h post-injection and reached maximum levels by 24 h. Thermal hypersensitivity is thus established 12 h before sodium channel augmentation can be demonstrated.
Collapse