Ammonia induces calpain-dependent cleavage of CRMP-2 during neurite degeneration in primary cultured neurons

Zhenbin Cai; Xiaonan Zhu; Guowei Zhang; Fengming Wu; Hongsheng Lin; Minghui Tan

doi:doi:10.18632/aging.102053

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Research Paper Volume 11, Issue 13 pp 4354—4366

Ammonia induces calpain-dependent cleavage of CRMP-2 during neurite degeneration in primary cultured neurons

Figure 4. Axonal degeneration induced by ammonia is mediated by calpain. (A) Cultured cerebellar granule cells were treated with 2 mM ammonia for 24 h with or without ALLM, ZVAD, or AR-A014418, and observed by microscopy. Neurons were subjected to immunocytochemistry with βIII-Tubulin (βIII) and Hoechst for nucleus staining. White arrows show the beading puncta. Neurite fragmentation (B) and axonal beading (C) were quantified as in Figure 1. Data are means ± SEs from at least three independent experiments; * p < 0.05 vs. Ctrl. Scale bar, 20 μm.