Inhibition of interleukin-6 abolishes the promoting effects of pair housing on post-stroke neurogenesis

Neuroscience
C MengS-Y Yuan

Abstract

Interleukin-6 (IL-6) has been shown to promote post-stroke angiogenesis and long-term functional recovery; however, whether IL-6 could promote post-stroke neurogenesis remains unclear. This study aims to investigate the effects of IL-6 on neurogenesis after ischemic stroke. We also investigated whether pair housing (PH) could improve the experimental stroke outcome through IL-6. Transient middle cerebral artery occlusion (tMCAO) was induced in mice treated with recombinant IL-6 (rIL-6) or anti-IL-6 neutralizing antibodies (anti-IL-6 mAbs). Another set of mice were pair-housed (PH; male and ovariectomized female) for 2weeks, subjected to tMCAO and then assigned to a housing condition (isolated or PH). Pair-housed mice were treated with anti-IL-6 mAbs. Behavioral assessments were made 3days before tMCAO and after 28 days of reperfusion. Neural progenitor cells (NPCs) isolated from ipsilateral subventricular zone (SVZ) at 14 days post-ischemia were treated with rIL-6 plus soluble IL-6 receptor (sIL-6R). The effects of IL-6 on the proliferation and differentiation of NPCs were examined in vivo and in vitro. The role and mechanism of IL-6 in PH-mediated enhancement of NPC proliferation and functional recovery were investigated in vi...Continue Reading

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Apr 20, 2018·Acta Pharmacologica Sinica·Shu-Zhen ZhuZhong-Ping Feng
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