Abstract：
:Previous animal and human studies have indicated that nociceptive thresholds are decreased by acute hyperglycemia. The results of these studies may be challenged due to methodological problems. We therefore conducted a double-blind, controlled, cross-over study on the effect of acute hyperglycemia on nociceptive and non-nociceptive thresholds in 10 type 1 (insulin-dependent) diabetic patients (diabetes < 5 years) without symptoms or clinical signs of peripheral neuropathy. During an overnight fast, blood glucose concentration was normalized by refract insulin injections. Then, blood glucose was kept at 6 mmol/l for 3 h by an intravenous infusion of glucose and insulin. On one study day, blood glucose was kept at 6 mmol/l for a further 3 h and on another day, blood glucose was elevated to 12 mmol/l during 0.5 h by additional glucose infusion and kept at that level for 2.5 h. Sensory testing was carried out twice during the initial 3 h with euglycemia and 3 times during the following period with either hyper- or euglycemia. The test procedure included determination of pain detection and pain tolerance thresholds to heat (wrists) and pressure (fingers) as well as detection thresholds to warmth/cooling (wrist), vibration (finger), and mechanical (wrist) stimulation. The changes in neither nociceptive nor non-nociceptive thresholds showed any statistically significant differences between the 2 study days. The pressure pain detection and tolerance thresholds showed, however, minor decreases at each of the test days, probably due to cutaneous sensitization caused by the repeated measurements. Compared to baseline, the pressure pain thresholds decreased significantly on the day with hyperglycemia. None of the other thresholds showed such changes.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Painjournal_title
Painauthors
Thye-Rønn P,Sindrup SH,Arendt-Nielsen L,Brennum J,Hother-Nielsen O,Beck-Nielsen Hdoi
10.1016/0304-3959(94)90148-1subject
Has Abstractpub_date
1994-01-01 00:00:00pages
43-49issue
1eissn
0304-3959issn
1872-6623pii
00006396-199401000-00006journal_volume
56pub_type
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