Fig. 1: Gene expression analyses at baseline and after bariatric surgery in MDD and non-depressed patients.

A Heatmap of the results of the sparse least square analysis (sPLS) on the 33 patients at baseline showing the strength of correlation between the 2000 gene probes the most correlated to depression (color code at the top left); each line corresponds to a gene probe and in each column a phenotypic value of depression. B Venn diagrams of the three differential expression analyses showing significantly differentially expressed genes.