People with type 2 diabetes exhibited blunted glucocorticoid (p=0.013) and mineralocorticoid (p=0.010) sensitivity following psychophysiological stress testing compared to healthy controls.
Case-Control (n=74)
Does psychophysiological stress alter glucocorticoid and mineralocorticoid sensitivity differently in people with type 2 diabetes compared to healthy controls?
People with type 2 diabetes exhibit blunted physiological stress responsivity, which may be partly driven by a lack of normal stress-induced changes in mineralocorticoid and glucocorticoid sensitivity.
p-value: p=0.013 and 0.010
Psychological stress may contribute to type 2 diabetes but mechanisms are still poorly understood. In this study, we examined whether stress responsiveness is associated with glucocorticoid and mineralocorticoid sensitivity in a controlled experimental comparison of people with type 2 diabetes and non-diabetic participants. Thirty-seven diabetes patients and 37 healthy controls underwent psychophysiological stress testing. Glucocorticoid (GR) and mineralocorticoid sensitivity (MR) sensitivity were measured by dexamethasone- and prednisolone-inhibition of lipopolysaccharide (LPS)-induced interleukin (IL) 6 levels, respectively. Blood pressure (BP) and heart rate were monitored continuously, and we periodically assessed salivary cortisol, plasma IL-6 and monocyte chemotactic protein (MCP-1). Following stress, both glucocorticoid and mineralocorticoid sensitivity decreased among healthy controls, but did not change in people with diabetes. There was a main effect of group on dexamethasone (F(1,74)=6.852, p=0.013) and prednisolone (F(1,74)=7.295, p=0.010) sensitivity following stress at 45 min after tasks. People with diabetes showed blunted stress responsivity in systolic BP, diastolic BP, heart rate, IL-6, MCP-1, and impaired post-stress recovery in heart rate. People with Diabetes had higher cortisol levels as measured by the total amount excreted over the day and increased glucocorticoid sensitivity at baseline. Our study suggests that impaired stress responsivity in type-2 diabetes is in part due to a lack of stress-induced changes in mineralocorticoid and glucocorticoid sensitivity.
Carvalho et al. (Tue,) conducted a case-control in Type 2 diabetes (n=74). Psychophysiological stress testing vs. Healthy controls was evaluated on Glucocorticoid and mineralocorticoid sensitivity following stress (p=0.013 and 0.010). People with type 2 diabetes exhibited blunted glucocorticoid (p=0.013) and mineralocorticoid (p=0.010) sensitivity following psychophysiological stress testing compared to healthy controls.