NTRK2 and Anxiety: Interestingly, among them, the BALB/c line exhibited the highest anxiety-like and anhedonia-like behaviors, and also displayed increased responses to social rewards in SCPP, with downregulated GR, and no changed protein levels of MR, TrkB, and p75 in the NAC, suggesting possible involvement of NAC GR activity in an increased social reward response and anxiety [25].