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Centre of Inflammation and Metabolism (CIM)


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135Type 2 diabetes mellitus is associated with impaired cytokine response and adhesion molecule expression in human endotoxemia.
Andreasen AS; Pedersen-Skovsgaard T; Berg RM; Svendsen KD; Feldt-Rasmussen B; Pedersen BK; Moller K
Intensive Care Med 2010; 2010: 520258
PubMed ID: 20229041

PURPOSE: Type 2 diabetes is associated with an increased risk of acquiring infectious diseases and developing sepsis. This may partly be due to immune dysfunction. We investigated the in vivo innate immune response of type 2 diabetic persons to an intravenous injection of E. coli lipopolysaccharide (LPS). METHODS: After ethics approval, informed consent and a thorough physical examination, 19 type 2 diabetic patients and 23 healthy controls were included. LPS was given as an intravenous bolus injection of 0.3 ng/kg. Physiological variables, white blood cell count, and plasma concentrations of tumour necrosis factor (TNF), interleukin-6 (IL-6), interleukin-1 receptor antagonist (IL-1ra), and the adhesion molecules E-selectin, vascular adhesion molecule (VCAM)-1, and intracellular adhesion molecule (ICAM)-1 were measured hourly for 8 h. RESULTS: LPS injection induced a systemic inflammatory response with increases in neutrophils, temperature, heart rate and plasma concentrations of cytokines and adhesion molecules in healthy and type 2 diabetic volunteers. Type 2 diabetes was associated with less pronounced LPS-induced increases in TNF, IL-1ra, VCAM-1 and ICAM-1. There was a trend towards an attenuated upregulation of E-selectin in diabetics, even though the plasma concentration tended to be generally higher compared to healthy controls. CONCLUSIONS: Patients with type 2 diabetes exhibit an attenuated increase in plasma levels of TNF and IL-1ra, as well as an attenuated upregulation of VCAM-1 and ICAM-1 to LPS in vivo. This finding may provide a mechanistic explanation for the adverse outcome seen during infectious diseases in diabetic patients.

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