Inflammation-mediated damage in progressing lacunar infarctions: a potential therapeutic target

Area of Science:

• Neuroscience
• Immunology
• Cardiovascular Medicine

Background:

• Mechanisms of neurological deterioration in lacunar infarction are not fully understood.
• Investigating the role of inflammation in acute lacunar stroke is crucial for understanding patient outcomes.

Purpose of the Study:

• To investigate the role of proinflammatory molecules in early worsening and outcomes of acute lacunar stroke.
• To determine the association between specific inflammatory markers and neurological deterioration or poor functional outcomes.

Main Methods:

• Secondary analysis of 113 lacunar infarction patients within 24 hours of symptom onset.
• Early Neurological Deterioration (END) defined as a fall of ≥1 point in Canadian Stroke Scale motor items within 48 hours.
• Interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-alpha), and intercellular adhesion molecule-1 (ICAM-1) measured via ELISA.

Main Results:

• END occurred in 23.9% of patients; 23% had poor 3-month outcomes.
• Significantly higher plasma concentrations of TNF-alpha, IL-6, and ICAM-1 were observed in patients with END and poor outcomes.
• Logistic regression revealed TNF-alpha >14 pg/mL and ICAM-1 >208 pg/mL were independent predictors of END and poor 3-month outcomes.

Conclusions:

• High blood concentrations of inflammatory markers are associated with early neurological deterioration and poor functional outcomes in lacunar infarction.
• Inflammation is implicated as a contributing factor to brain injury in acute lacunar stroke.
• These findings highlight potential therapeutic targets for managing lacunar stroke progression.