Effects of C-peptide on blood flow, capillary diffusion capacity and glucose utilization in the exercising forearm of Type 1 (insulin-dependent) diabetic patients
| العنوان: | Effects of C-peptide on blood flow, capillary diffusion capacity and glucose utilization in the exercising forearm of Type 1 (insulin-dependent) diabetic patients |
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| المؤلفون: | B. Linde, B. L. Johansson, John Wahren |
| المصدر: | Diabetologia. 35:1151-1158 |
| بيانات النشر: | Springer Science and Business Media LLC, 1992. |
| سنة النشر: | 1992 |
| مصطلحات موضوعية: | Adult, Blood Glucose, medicine.medical_specialty, Endocrinology, Diabetes and Metabolism, Physical Exertion, Blood Pressure, Physical exercise, Microcirculation, Diffusion, chemistry.chemical_compound, Forearm, Reference Values, Internal medicine, Diabetes mellitus, Internal Medicine, medicine, Humans, Infusions, Intravenous, Glycated Hemoglobin, C-Peptide, C-peptide, business.industry, Muscles, Blood flow, medicine.disease, Capillaries, Diabetes Mellitus, Type 1, medicine.anatomical_structure, Endocrinology, Blood pressure, chemistry, Regional Blood Flow, Lactates, Vascular resistance, Vascular Resistance, business |
| الوصف: | Microvascular dysfunction is frequently seen in patients with Type 1 (insulin-dependent) diabetes. The present study was undertaken to examine whether skeletal muscle microcirculation in Type 1 diabetic patients is influenced by C-peptide. Forearm blood flow, capillary diffusion capacity and substrate exchange were studied during strenuous rhythmic forearm exercise on a hand ergometer. Measurements were made before and during i.v. infusion for 60 min of C-peptide or 0.9% NaCl in Type 1 diabetic patients and healthy subjects. During infusion the C-peptide levels in the diabetic patients increased from less than 0.05 nmol/l to 1.32 +/- 0.08 nmol/l. Prior to infusion forearm blood flow and capillary diffusion capacity during exercise were lower in the diabetic patients than the control subjects. During C-peptide infusion both variables increased in the diabetic patients (blood flow +27 +/- 4%, capillary diffusion capacity +52 +/- 9%) to levels similar to those in the healthy subjects, while no significant change was seen in the healthy control subjects or the diabetic patients given NaCl. Forearm uptake of oxygen and glucose in the diabetic patients increased markedly after C-peptide administration but were unchanged after NaCl infusion. Significant uptake of C-peptide to the deep forearm tissues was observed in the resting state; approximately 7 +/- 2% of the arterial C-peptide concentration was extracted by forearm tissues in diabetic patients as well as in healthy control subjects.(ABSTRACT TRUNCATED AT 250 WORDS) |
| تدمد: | 1432-0428 0012-186X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::923bb67a965f9da00e26cc2640a70b51Test https://doi.org/10.1007/bf00401369Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....923bb67a965f9da00e26cc2640a70b51 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14320428 0012186X |
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