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Microdialysis and proteomics of subcutaneous interstitial fluid reveals increased galectin-1 in type 2 diabetes patients
University of Gothenburg, Sweden.
University of Gothenburg, Sweden.
University of Gothenburg, Gothenburg, Sweden.
Uppsala University, Sweden.
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2016 (English)In: Metabolism: Clinical and Experimental, ISSN 0026-0495, E-ISSN 1532-8600, Vol. 65, no 7, 998-1006 p.Article in journal (Refereed) Published
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Abstract [en]

Objective. To identify a potential therapeutic target for type 2 diabetes by comparing the subcutaneous interstitial fluid from type 2 diabetes patients and healthy men. Methods. Proteomics was performed on the interstitial fluid of subcutaneous adipose tissue obtained by microdialysis from 7 type 2 diabetes patients and 8 healthy participants. 851 proteins were detected, of which 36 (including galectin-1) showed significantly altered expression in type 2 diabetes. We also measured galectin-1 expression in: (1) adipocytes isolated from adipose tissue biopsies from these participants; (2) subcutaneous adipose tissue of 24 obese participants before, during and after 16 weeks on a very low calorie diet (VLCD); and (3) adipocytes isolated from 6 healthy young participants after 4 weeks on a diet and lifestyle intervention to promote weight gain. We also determined the effect of galectin-1 on glucose uptake in human adipose tissue. Results. Galectin-1 protein levels were elevated in subcutaneous dialysates from type 2 diabetes compared with healthy controls (p amp;lt; 0.05). In agreement, galectin-1 mRNA expression was increased in adipocytes from the type 2 diabetes patients (p amp;lt; 0.05). Furthermore, galectin-1 mRNA expression was decreased in adipose tissue after VLCD (p amp;lt; 0.05) and increased by overfeeding (p amp;lt; 0.05). Co-incubation of isolated human adipocytes with galectin-1 reduced glucose uptake (p amp;lt; 0.05) but this was independent of the insulin signal. Conclusion. Proteomics of the interstitial fluid in subcutaneous adipose tissue in vivo identified a novel adipokine, galectin-1, with a potential role in the pathophysiology of type 2 diabetes. (C) 2016 Elsevier Inc. All rights reserved.

Place, publisher, year, edition, pages
W B SAUNDERS CO-ELSEVIER INC , 2016. Vol. 65, no 7, 998-1006 p.
Keyword [en]
Microdialysis; Proteomics; Galectin-1; Obesity; Adipose tissue
National Category
Endocrinology and Diabetes
Identifiers
URN: urn:nbn:se:liu:diva-130121DOI: 10.1016/j.metabol.2016.04.003ISI: 000377922600006PubMedID: 27282870OAI: oai:DiVA.org:liu-130121DiVA: diva2:948600
Note

Funding Agencies|Swedish Research Council; EFSD grant - Sanofi Aventis; Swedish Diabetes Association; Sahlgrenska University Hospital

Available from: 2016-07-12 Created: 2016-07-11 Last updated: 2016-07-12

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Nyström, Fredrik H
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Division of Cardiovascular MedicineFaculty of Medicine and Health SciencesDepartment of Endocrinology
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CiteExportLink to record
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