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  • Title: Platelets microparticles as a link between micro- and macro-angiopathy in young patients with type 1 diabetes.
    Author: Salem MA, Adly AA, Ismail EA, Darwish YW, Kamel HA.
    Journal: Platelets; 2015; 26(7):682-8. PubMed ID: 25806426.
    Abstract:
    The development of vasculopathies in diabetes involves multifactorial processes. Increased levels of platelets-derived microparticles (PMPs) have been reported in diseases associated with thrombotic risk, but few data are available in diabetes. We explored the level of PMPs in young patients with type 1 diabetes in relation to inflammation, glycemic control, micro-vascular complications and carotid intima media thickness (CIMT). Eighty children and adolescents with type 1 diabetes were divided into two groups according to the presence of micro-vascular complications and compared with 40 healthy controls. Patients were subjected to medical history, clinical examination and assessment of high-sensitivity C-reactive protein (hs-CRP), HbA1c, urinary albumin creatinine ratio (UACR), flow cytometric analysis for PMPs using anti-CD41b and CIMT. PMP levels were significantly increased in all patients with type 1 diabetes (2.92 ± 1.3%) whether with micro-vascular complications (3.46 ± 1.11%) or those without complications (2.37 ± 1.28%) compared with healthy controls (1.28 ± 0.64%; p < 0.001). CIMT was significantly elevated in all patients, and the highest levels were among those with micro-vascular complications (p < 0.001). Significant positive correlations were found between PMPs and body mass index, HbA1c, serum creatinine, total cholesterol, UACR, hs-CRP and CIMT (p < 0.05). Multiple linear regression analysis showed that HbA1c, UACR, hs-CRP and CIMT were independently related to PMPs levels in type 1 diabetes. According to Receiver operating characteristic curve analysis, the cutoff value of PMPs at 2.48% could differentiate patients with and without micro-vascular complications with a sensitivity of 80% and specificity of 73.3%. PMPs are elevated in patients with type 1 diabetes and can be considered as an early marker of micro-vascular complications and subclinical atherosclerosis.
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