Blaslov, Kristina and Bulum, Tomislav and Duvnjak, Lea (2015) Circulating dipeptidyl peptidase-4 activity is associated with diabetic retinopathy in type 1 diabetic patients. European Journal of Ophthalmology, 25 (4). pp. 328-332. ISSN 1120-6721
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Abstract
PURPOSE: Diabetic retinopathy (DR) is the most frequent complication among patients with type 1 diabetes mellitus (T1DM). Dipeptidyl peptidase-4 (DPP4) is a protease with elevated activity in patients with T1DM. Several studies indicate that DPP4 inhibitors might have beneficial effect on nonproliferative retinopathy (NPR) development as well as on its progression to proliferative retinopathy (PR). We aimed to explore the relationship between serum DPP4 activity and DR in patients with T1DM. ----- METHODS: This cross-sectional study recruited 44 patients with T1DM. The DPP4 activity was measured by colorimetric assay in a microplate reader. Photodocumented retinopathy status was made according to the EURODIAB protocol. ----- RESULTS: A total of 28 (63.6%) patients were men, mean age 45.36 years, diabetes duration 23.71 years, glycated hemoglobin A1c (HbA1c) 7.4%. Patients were stratified into 2 groups according to retinopathy prevalence. Group 1 comprised 14 (31.85%) patients with DR absence while the second group consisted of 30 (68.15%) patients with both PR and NPR. Group 1 had lower fasting serum DPP4 activity (25.85 vs 33.84 U/L, p<0.001) when compared to the second group. In the binary logistic regression model adjusted for age, sex, diabetes duration, and HbA1c level, DPP4 activity was associated with DR prevalence (odds ratio 1.887 [1.073-3.321]). ----- CONCLUSIONS: Serum DPP4 activity may be independently associated with both DR types in patients with T1DM. Further study is warranted to elucidate whether there is an association between DPP4 activity and DR severity and/or progression.
| Item Type: | Article | ||||||||
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| MeSH: | Adult ; Blood Glucose/metabolism ; Colorimetry ; Cross-Sectional Studies ; Diabetes Mellitus, Type 1/enzymology ; Diabetic Retinopathy/enzymology ; Dipeptidyl Peptidase 4/blood ; Female ; Hemoglobin A, Glycosylated/metabolism ; Humans ; Male ; Middle Aged ; Risk Factors | ||||||||
| Departments: | Katedra za internu medicinu | ||||||||
| Depositing User: | Martina Žužak | ||||||||
| Status: | Published | ||||||||
| Creators: |
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| Date: | July 2015 | ||||||||
| Date Deposited: | 25 Oct 2017 07:48 | ||||||||
| Last Modified: | 21 Jul 2020 07:46 | ||||||||
| Subjects: | UNSPECIFIED | ||||||||
| Related URLs: | |||||||||
| URI: | http://medlib.mef.hr/id/eprint/2726 |
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