Elsevier

Brain Research

Volume 723, Issues 1–2, 3 June 1996, Pages 206-209
Brain Research

Transforming growth factor-β1 promotes re-elongation of injured axons of cultured rat hippocampal neurons

https://doi.org/10.1016/0006-8993(96)00253-3Get rights and content

Abstract

Transforming growth factor-β1 (TGF-β1) is highly expressed in neural tissues following brain injuries. To determine a role of TGF-β1 in neural pathologies, axons of cultured rat hippocampal neurons were cut by local irradiation of laser beam, and the effect of TGF-β1 on neurite regeneration following axotomy was investigated. The axonal growth was stopped by laser irradiation, but addition of TGF-β1 remarkably promoted the axonal re-elongation from the injured site. The effect of TGF-β1 was concentration dependent and seen maximally at a concentration of 1 ng/ml. These results suggest that TGF-β1 has a capability of promoting axonal regeneration of brain neurons after lesioning.

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