Figure 5.
Correlation between BDNF pro-peptide in the brain and spleen. (a) There was a negative correlation (r=−2.66, P=0.048) between BDNF pro-peptide in the parietal cortex and BDNF pro-peptide in the spleen in all the subjects (N=56). (b) There was a positive correlation (r=0.387, P=0.003) between BDNF pro-peptide in the cerebellum and BDNF pro-peptide in the spleen in all the subjects (N=56). BD, bipolar disorder; BDNF, brain-derived neurotrophic factor; MDD, major depressive disorder; SZ, schizophrenia.