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We previously reported that anti-inflammatory treatment with steroids improves recovery outcome in an olfactory nerve injury model. Clinically, however, steroid administration is not recommended in the acute phase of head injury because of concerns regarding side effects and no evidence of its efficacy. Recently, it has been reported that interleukin-6 (IL-6) plays an important role in the inflammatory reaction. The present study investigates if anti-IL-6 receptor (IL-6R) antibody can facilitate functional recovery in the olfactory system following injury. Rat anti-mouse IL-6R antibody (MR16-1) was intraperitoneally injected to severe olfactory nerve injury model mice immediately after the nerve transection (NTx). Histological assessment of recovery within the olfactory bulb was made at 5–70 days. X-gal staining labeled the degenerating and regenerating olfactory nerve fibers and immunohistochemical staining detected the presence of reactive astrocytes and macrophages/microglia. MR16-1-injected animals showed significantly smaller areas of injury-associated tissue, fewer astrocytes and macrophages/microglia, and an increase in regenerating nerve fibers. Olfactory function assessments using both an olfactory avoidance behavioral test and evoked potential testing showed improved functional recovery in MR16-1-injected mice. These findings suggest that blockade of IL-6R could provide a new therapeutic strategy for the treatment of olfactory dysfunction following head injuries.
本文/Department of Otorhinolaryngology-Head and Neck Surgery, Mie University Graduate School of Medicine, Japan
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DOIinfo:doi/10.1016/j.neures.2013.03.015
Collection (particular)国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
Date Accepted (W3CDTF)2022-01-10T16:22:37+09:00
Data Provider (Database)国立国会図書館 : 国立国会図書館デジタルコレクション