Attenuated neutrophil respiratory burst following acute hypoglycaemia in diabetic patients and normal subjects |
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Authors: | G A Thomson B M Fisher C G Gemmell A C MacCuish S J Gallacher |
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Institution: | (1) Diabetic Clinic, Royal Alexandra Hospital, Paisley, UK, GB;(2) Department of Microbiology, Glasgow Royal Infirmary, Glasgow, UK, GB;(3) Department of Diabetes, Glasgow Royal Infirmary, Glasgow, UK, GB;(4) Department of Diabetes, University Hospital, Queens Medical Centre, Nottingham NG7 2UH, UK, GB |
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Abstract: | The effects of insulin-induced hypoglycaemia on the neutrophil respiratory burst were investigated in six patients with type
1 diabetes and six non-diabetic control subjects. Plasma glucose reached similar nadirs in control subjects (0.9±0.1 mmol
l–1; mean±SEM) and diabetic patients (1.2±0.2 mmol l–1) (NS). The resting neutrophil respiratory burst was similar in control subjects (1.26±0.15 mV) and diabetic patients (1.03±0.18
mV) (NS). The neutrophil respiratory burst fell following hypoglycaemia in control subjects and diabetic patients to 0.38±0.05
mV (P<0.001) and 0.54±0.09 mV (P<0.05), respectively. This fall was significantly greater in control subjects (ANOVA; P<0.001). Resting neutrophil counts were not significantly different in control subjects (3.2±0.3×109 l–1) and diabetic patients (6.1±1.5×109 l–1). Following hypoglycaemia, neutrophil numbers increased in control subjects and diabetic patients to 11.5±1.4×109 l–1 (P<0.01) and 9.7±1.7×109 l–1 (P<0.05), respectively. This increase was significantly greater in control subjects (ANOVA; P<0.001). These results suggest that the neutrophil respiratory burst is suppressed in response to hypoglycaemia and that this
phenomenon is more pronounced in non-diabetic subjects.
Received: 28 March 1997 / Accepted in revised form: 31 July 1997 |
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Keywords: | Respiratory burst Neutrophil Chemiluminescence Hypoglycaemia Type 1 diabetes |
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