Glucocorticoid Resistance is Associated with Poor Functional Outcome After Stroke

Area of Science:

• Neuroscience
• Immunology
• Endocrinology

Background:

• Systemic inflammation is a known predictor of poor outcomes in patients who have experienced an ischemic stroke.
• Glucocorticoids (GCs) are crucial in modulating inflammatory responses.

Purpose of the Study:

• To investigate the relationship between glucocorticoid (GC) sensitivity, systemic inflammation, and functional outcomes in ischemic stroke patients.
• To determine if GC resistance is associated with poorer recovery after stroke.

Main Methods:

• Assessed GC sensitivity by measuring tumor necrosis factor α (TNFα) release in response to lipopolysaccharide and dexamethasone stimulation in blood samples from 246 ischemic stroke patients.
• Calculated a GC sensitivity index, where a higher index signifies greater GC resistance.
• Utilized logistic regression analysis, adjusting for relevant clinical and inflammatory markers, to evaluate the association between GC sensitivity and stroke outcome.

Main Results:

• Patients with poor functional outcomes exhibited a significantly higher GC sensitivity index compared to those with good outcomes.
• A higher GC sensitivity index was independently associated with an increased risk of poor outcome after ischemic stroke (OR 2.32, 95% CI 1.21-4.45).

Conclusions:

• Glucocorticoid resistance is significantly associated with poor functional outcomes in the aftermath of an ischemic stroke.
• GC sensitivity may serve as a potential biomarker for predicting stroke recovery and guiding therapeutic strategies.