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Altered response in renal blood flow and oxygen tension to contrast media in diabetic rats
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Cell Biology.
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2003 (English)In: Acta Radiologica, ISSN 0284-1851, E-ISSN 1600-0455, Vol. 44, no 3, 347-53 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE: To investigate the effect of the contrast medium (CM) iopromide on renal microcirculation and oxygen tension in non-diabetic control and streptozotocin-diabetic Wistar Furth rats. MATERIALS AND METHODS: Oxygen tension was measured with Clark-type microelectrodes and blood flow with laser-Doppler flow probes. In order to differentiate between an acutely increased blood glucose concentration and a long-term diabetic state, some of the non-diabetic control rats were intravenously infused with glucose. RESULTS: CM decreased the medullary oxygen tension in control (non-diabetic normoglycemic) rats ( approximately 35%) but not in diabetic rats. Medullary blood flow in control rats increased after CM administration and remained elevated, while it was unchanged in the diabetic rats. In response to CM, glucose-infused control rats responded similarly to control animals in medullary oxygen tension, but similarly to diabetic rats in medullary blood flow. Contrary to in control rats, medullary oxygen tension was unchanged in diabetic animals after CM administration. CONCLUSION: Streptozotocin-diabetic rats have an altered response to intravenous injection of the CM iopromide compared to non-diabetic rats. The unaltered medullary oxygen tension, seen in the diabetic group after injection of CM, suggests that non-hemodynamic mechanisms are responsible for the increased frequency of renal failure commonly seen among diabetic patients.

Place, publisher, year, edition, pages
2003. Vol. 44, no 3, 347-53 p.
Keyword [en]
Contrast media, Renal failure, diabetes
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-65672DOI: 10.1034/j.1600-0455.2003.00076.xPubMedID: 12752011 OAI: oai:DiVA.org:uu-65672DiVA: diva2:93583
Available from: 2007-11-07 Created: 2007-11-07 Last updated: 2017-11-28Bibliographically approved

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Carlsson, Per-Ola

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