| Is diabetes an acquired disorder of reactive glucose metabolites and their intermediates? | |
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MedLine Citation:
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PMID: 22270223 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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AIMS/HYPOTHESIS: We hypothesised that diabetic patients would differ from those without diabetes in regard to the handling of glucose-derived reactive metabolites, evidenced by triosephosphate intermediates (TP(INT)) and methylglyoxal (MG), irrespective of the type of diabetes, plasma glucose level or HbA(1c) value. METHODS: To test this hypothesis, erythrocytes were isolated from patients with type 1 (n = 12) and type 2 (n = 12) diabetes with varying blood glucose and HbA(1c) levels. These were then compared with erythrocytes isolated from individuals without diabetes (n = 10), with respect to MG, as determined by HPLC, and TP(INT), as determined by endpoint enzymatic assays. RESULTS: The concentrations of intracellular TP(INT) and MG were significantly elevated in erythrocytes from diabetic patients. Normalisation of either TP(INT) or MG to intracellular glucose concentration (nmol glucose/mgHb) confirmed that erythrocytes from diabetic patients accumulated more reactive metabolites than did those from healthy controls. CONCLUSIONS/INTERPRETATION: Diabetic patients can be characterised by an increased formation of TP(INT) and MG. The 25-fold increase of MG in type 1 and the 15-fold increase in type 2 diabetes, together with a several-fold increase in TP(INT) and decreased glyceraldehyde-3-phosphate dehydrogenase activity even under normal glucose conditions, imply that normalising glucose level cannot completely prevent late diabetic complications until this acquired error of metabolism has been restored. |
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Authors:
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T Fleming; J Cuny; G Nawroth; Z Djuric; P M Humpert; M Zeier; A Bierhaus; P P Nawroth |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-22 |
Journal Detail:
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Title: Diabetologia Volume: - ISSN: 1432-0428 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0006777 Medline TA: Diabetologia Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Medicine I and Clinical Chemistry, University of Heidelberg, INF 410, 69120, Heidelberg, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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