ArticleClinical science (London, England : 1979)2025
Early detection and progression of insulin resistance revealed by impaired organismal anti-inflammatory heat shock response during ex vivo whole-blood heat challenge.
Article in Clinical science (London, England : 1979), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Extracellular 70 kDa heat shock protein in blood plasma binds insulin and modulates glycaemic control in vivo.Cell stress & chaperones · 2026Article
- Article
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7 authors.
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Abstract
Chronic inflammatory diseases, e.g., obesity, cardiovascular disease and type-2 diabetes, progressively suppress the anti-inflammatory heat shock response (HSR) by impairing the synthesis of key components, perpetuating inflammation. Monitoring HSR progression offers predictive value for countering chronic inflammation. This study quantified HSR in high-fat diet (HFD) and normal chow (NC) mice by measuring 70 kDa heat shock protein (HSP70) expression after heat treatment of whole blood samples. To align with human translational relevance, animals were housed within their thermoneutral zone (TNZ). Whole blood was heat-challenged weekly at 42 °C for 1-2 hours over 22 weeks, and ΔHSP70 was calculated as the difference between HSP70 expressions at 42 °C and 37 °C. Results correlated with fasting glycaemia, oral glucose tolerance test, intraperitoneal insulin tolerance test and 2-hour post-glucose load glycaemia. ΔHSP70 levels >0.2250 indicated normal fasting glycaemia, while levels <0.2125 signalled insulin resistance and type-2 diabetes onset. A logistic model (five-parameter logistic) showed progressive HSR decline, with HFD mice exhibiting earlier ΔHSP70 reduction (t1/2 = 3.14 weeks) compared with NC mice (t1/2 = 8.24 weeks), highlighting compromised anti-inflammatory capacity in both groups of mice maintained at TNZ. Remarkably, even NC mice surpassed insulin resistance thresholds by week 22, relevant as control diets confronted interventions. Observed HSR decline mirrors tissue-level suppression in obese and type-2 diabetic individuals, underscoring HSR failure as a hallmark of obesity-driven inflammation. This study introduces a practical whole-blood assay to evaluate HSR suppression, allowing assessment of glycaemic status during obesity onset before any clinical manifestation.
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