Abstract:
:Recent studies have reported reduced endocrine and symptomatic responses to hypoglycaemia 18-24 h after antecedent hypoglycaemia in both non-diabetic subjects and those with insulin-dependent diabetes mellitus. We examined these and peripheral physiological responses in eight non-diabetic subjects aged 23-35 years in the week following antecedent hypoglycaemia. Blood glucose levels were held at plateaus of 5 mmol/l and 2.5 mmol/l for 30 min during hyperinsulinaemic (60 mU x m-2x min-1) morning clamps on days 1, 3 and 8 of two study periods separated by at least 4 weeks. Measurements were made at time 0, 15 and 30 min of each plateau on each day. One the afternoon of Day 1 we also induced either euglycaemia with a blood glucose level of 5 mmol/l (control week) or hypoglycaemia of 2.9 mmol/l (hypo week) for 2 h in random order. The adrenaline response to morning hypoglycaemia (p<0.001 on all days) was attenuated on Day 3 (p<0.05) and Day 8 (p<0.05) compared to Day 1 of hypo week only. Sweating was also attenuated on Day 3 (p<0.05) and Day 8 (p<0.02) of hypo week only. Noradrenaline levels and tremor increased during hypoglycaemia on each study day (p<0.05) but did not differ between days in either week. During hypo week only, the total symptom score response to hypoglycaemia was attenuated on Day 3 (p<0.03) but not Day 8 (p=0.10). Autonomic symptoms were similarly affected. In summary, the physiological responses to hypoglycaemia are affected differentially by antecedent hypoglycaemia with sweating and adrenaline responses remaining impaired for at least adrenaline responses remaining impaired for at least 5 days.
journal_name
Diabetologiajournal_title
Diabetologiaauthors
George E,Harris N,Bedford C,Macdonald IA,Hardisty CA,Heller SRdoi
10.1007/BF00422367subject
Has Abstractpub_date
1995-10-01 00:00:00pages
1183-90issue
10eissn
0012-186Xissn
1432-0428journal_volume
38pub_type
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