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Unfolded protein response is activated in leukocyte RNA from patients with severe heat stroke

ABSTRACT: Compared to normal subjects, patients with severe heat stroke showed altered expression of RNAs, especially those involved in the endoplasmic reticulum stress response.

ORGANISM(S): Homo sapiens

PROVIDER: GSE256062 | GEO | 2026/03/12

REPOSITORIES: GEO

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Unfolded protein response is activated in leukocyte RNA from patients with severe heat stroke

Project description:Unfolded protein response is activated in leukocyte RNA from patients with severe heat stroke

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Coagulopathy signature precedes and predicts severity of end-organ heat stroke pathology in a mouse model

Project description:Heat stroke is a life-threatening condition characterized by loss of thermoregulation and severe elevation of core body temperature, which can cause organ failure and damage to the central nervous system. While no definitive test exists to measure heat stroke severity, immune challenge is known to increase heat stroke risk, although the mechanism of this increased risk is unclear. In this study, we used a mouse model of classic heat stroke to test the effect of immune challenge on pathology. Employing multivariate supervised machine learning to identify patterns of molecular and cellular markers associated with heat stroke, we found that prior viral infection simulated with poly I:C injection resulted in heat stroke presenting with high levels of factors indicating coagulopathy. Despite a decreased number of platelets in the blood, platelets are large and non-uniform in size, suggesting younger, more active platelets. Levels of D-dimer and soluble thrombomodulin were increased in more severe heat stroke, and in cases presenting with the highest level of organ damage markers D-dimer levels dropped, indicating potential fibrinolysis-resistant thrombosis. Genes corresponding to immune response, coagulation, hypoxia, and vessel repair were up-regulated in kidneys of heat-challenged animals, and these increases correlated with both viral treatment and distal organ damage while appearing before discernible tissue damage to the kidney itself. We conclude that heat stroke-induced coagulopathy may be a driving mechanistic force in heat stroke pathology, especially when exacerbated by prior infection, and that coagulation markers may serve as an accessible biomarker for heat stroke severity and therapeutic strategies.

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