Heat stress-induced mitochondrial damage and its impact on leukocyte function

Area of Science:

• Immunology
• Mitochondrial Biology
• Pathophysiology

Background:

• Heatstroke involves systemic inflammation, immune dysregulation, and multiorgan failure.
• Mitochondrial damage in leukocytes is a key factor in heatstroke pathophysiology.

Purpose of the Study:

• To review the mechanisms of heat stress-induced leukocyte mitochondrial dysfunction.
• To explore the downstream effects on immunity, coagulation, and organ integrity.

Main Methods:

• Review of existing literature on heat stress, leukocyte function, and mitochondrial biology.
• Analysis of molecular pathways linking heat stress to mitochondrial damage and immune responses.

Main Results:

• Heat stress activates leukocytes via DAMPs, releasing inflammatory mediators and ROS.
• Mitochondrial dysfunction amplifies inflammation and triggers cell death pathways (apoptosis, pyroptosis, ferroptosis).
• Leukocyte mitochondrial injury exacerbates coagulation abnormalities and microvascular thrombosis, leading to organ dysfunction.

Conclusions:

• Leukocyte mitochondrial damage is central to the biphasic immune response in heatstroke.
• Biomarkers of mitochondrial dysfunction can offer diagnostic insights.
• Therapeutic strategies targeting mitochondrial preservation hold promise for treating heatstroke.