Dynamic psychological vulnerability and adaptation in rheumatoid arthritis: Trajectories, predictors, and interventions

Figure 2 Neuroendocrine-immune-cognitive pathway in rheumatoid arthritis. This diagram illustrates how chronic inflammation in rheumatoid arthritis patients triggers a molecular cascade beginning with hypothalamic-pituitary-adrenal axis dysfunction (48% of patients showing cortisol rhythm disruption) and glucocorticoid receptor downregulation (25%), which leads to altered gene expression patterns affecting cognitive flexibility and coping mechanisms. The resulting neurobiological changes, including reduced hippocampal volume (5.6%) and impaired prefrontal network function, create a 2.8-fold increased risk of psychological adaptation difficulties, explaining 358% of variance in adaptation outcomes and establishing a direct molecular link between inflammatory disease activity and psychological vulnerability. RA: Rheumatoid arthritis; HPA: Hypothalamic-pituitary-adrenal; IL-6: Interleukin-6; TNF-α: Tumor necrosis factor-α; NF-κB: Nuclear factor-κB; GR: Glucocorticoid receptor; GILZ: Glucocorticoid-induced leucine zipper; FKBP5: FKBP prolyl isomerase 5; DUSP1: Dual specificity phosphatase 1.