WFRF:(Andersson Christian)
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The effect of euglucaemic hyperinsulinaemia on forearm blood flow and glucose uptake in the human forearm
- Fugmann, Andreas (author)
- Lind, Lars (author)
-
- Andersson, P. E. (author)
- Uppsala universitet,Institutionen för folkhälso- och vårdvetenskap,Geriatrics
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- Millgård, Jonas (author)
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- (creator_code:org_t)
- Springer Science and Business Media LLC, 1998
- 1998
- English.
- In: Acta Diabetologica. - : Springer Science and Business Media LLC. - 0940-5429 .- 1432-5233. ; 35:4, s. 203-206
- Journal article (peer-reviewed)
Abstract
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- Insulin-mediated stimulation of blood flow to skeletal muscle has been proposed to be of major importance for insulin-mediated glucose uptake. The aim of this study was to investigate the relative importance of blood flow and glucose extraction as determinants of insulin-mediated glucose uptake in the human forearm. Forearm blood flow (FBF), glucose extraction and oxygen consumption were evaluated for 100 min during the euglycaemic hyperinsulinaemic clamp (92 mU/l) in nine healthy subjects. FBF was measured by venous occlusion plethysmography. Forearm glucose uptake increased sevenfold during the hyperinsulinaemia (P<0.001). Forearm glucose extraction showed a minor increase during the first 10 min of hyperinsulinaemia, but the most marked increase took place between 10 and 20 min (+170%). Thereafter, only a minor further increase was seen. During the first 10 min of hyperinsulinaemia FBF was unchanged. Thereafter, FBF increased steadily to a plateau reached after 60 min (+50%, P<0.001). A close relationship between whole body glucose uptake and FBF was seen at the end of the clamp (r = 0.75, P<0.02), but at this time the relationship between whole body glucose uptake and forearm glucose extraction was not significant. The modest increase in O2 consumption seen at the beginning of the clamp (+19%) was not related to FBF during the early phase of the clamp. In conclusion, the early course of insulin-mediated glucose uptake in the human forearm was mainly due to an increase in glucose extraction. However, with time the insulin-mediated increase in blood flow increased in importance and after 100 min of hyperinsulinaemia FBF was the major determinant of glucose uptake.
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- MEDICIN
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- Fugmann, Andreas
- Lind, Lars
- Andersson, P. E.
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- Berne, Christian
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