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. 2015 Apr 13;290(22):13678–13691. doi: 10.1074/jbc.M114.622415

FIGURE 9.

FIGURE 9.

Hypothesized monoamine-independent mode of action of amitriptyline-induced GDNF production in astroglial cells. Amitriptyline either directly or indirectly activates PTX-sensitive Gi/o (Gi3 or Go1) and MMP/FGFR/FRS2α/ERK cascade, leading to GDNF production in astroglial cells.