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Effects of co-existing autoimmune diseases on serum lipids and lipoprotein subclasses profile in paediatric patients with type 1 diabetes mellitus

By Dragana Bojanin, Tatjana Milenković, Jelena Vekić, Rade Vuković, Aleksandra Zeljković, Jelena Janać, Jasmina Ivanišević, Slađana Todorović, Ilijana Mazibrada and Vesna Spasojević-Kalimanovska


Objective: Paediatric patients with type 1 diabetes mellitus (T1DM) frequently develop other autoimmune disorders; most commonly autoimmune thyroiditis (ATD) and celiac disease (CD). In this study we evaluated whether co-existing autoimmune diseases had significant impact on lipid and lipoprotein subclasses, as known cardiovascular risk factors in T1DM. Design and methods: Study included 201 subjects with T1DM (14.1 +/- 2.9 years) and 141 age-and gender-matched controls. ATD was presented in 30 and CD in 15 T1DM patients. Serum lipid parameters were determined by routine laboratory methods and plasma low-density (LDL) and high-density lipoprotein (HDL) subclasses by gradient-gel electrophoresis method. Results: Both groups of T1DM patients with concomitant autoimmune disease had significantly lower HDL-C levels (P lt 0.05) than the patients with T1DM only, but comparable to control group (P = 0.436). T1DM patients had significantly higher (P lt 0.001) proportion of small HDL subclasses than controls. Mean value of atherosclerosis index in patients with T1DM + CD was the highest (1.75 +/- 0.86) and it was significantly higher than the index in patients with T1DM only (1.33 +/- 0.51; P lt 0.05). LDL size did not differ between the groups of T1DM patients and control group (P= 0.619). The size of HDL particles was significantly reduced (P lt 0.05) in the groups with associated autoimmune diseases. The patients with co-existing autoimmune diseases had higher risk of low HDL-C level (OR: 2.96; P lt 0.05). Conclusions: The results have shown significant impact of co-existing autoimmune diseases on lipid profile in patients with T1DM. The most prominent changes were found in HDL lipoprotein characteristics in T1DM + CD group

Topics: Type 1 diabetes mellitus, Celiac disease, Autoimmune thyroiditis, HDL, LDL, Cardiovascular risk
Publisher: 'Elsevier BV'
Year: 2018
DOI identifier: 10.1016/j.clinbiochem.2018.01.026
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