Based on pharmacy claims of those who filled at least one prescription for mental health medication in 2019, antidepressant use is most prevalent in West Virginia, Kentucky, Vermont, and New Hampshire. This statistic shows the percentage of patients (excluding those on government-sponsored benefits) who filled a prescription for antidepressants in the U.S. in 2019, by state.

Additional file 1. VisitsOverTime.csv, data showing percentage of patients with a visit to each specialty by year and antidepressant type (used for Fig. 1).

Additional file 2. IndicationsOverTime.csv, data showing percentage patients with a record of each indication by year and antidepressant type (used for Fig. 3).

BackgroundUp to 40 per cent of people with active inflammatory bowel disease (IBD) also suffer from mood disorders such as anxiety and depression. Notwithstanding, the fundamental biological pathways driving depression in IBD remain unknown.MethodsWe identified 33 core genes that drive depression in IBD patients and performed consensus molecular subtyping with the NMF algorithm in IBD. The CIBERSORT were employed to quantify the immune cells. Metabolic signature was characterized using the “IOBR” R package. The scoring system (D. score) based on PCA. Pre-clinical models are constructed using DSS.ResultsUsing transcriptome data from the GEO database of 630 IBD patients, we performed a thorough analysis of the correlation between IBD and depression in this research. Firstly, the samples were separated into two different molecular subtypes (D. cluster1 and D. cluster2) based on their biological signatures. Moreover, the immunological and metabolic differences between them were evaluated, and we discovered that D. cluster2 most closely resembled IBD patients concomitant with depression. We also developed a scoring system to assess the IBD-related depression and predict clinical response to anti-TNF- therapy, with a higher D. score suggesting more inflammation and worse reaction to biological therapies. Ultimately, we also identified through animal experiments an antidepressant, paroxetine, has the added benefit of lowering intestinal inflammation by controlling microorganisms in the digestive tract.ConclusionsThis study highlights that IBD patients with or without depression show significant variations and antidepressant paroxetine may help reduce intestinal inflammation.