Background: Inflammation plays an important role in the pathogenesis of diabetic neuropathy (DN) in patients with type 2 diabetes (DM2). It seems that vitamin D ((VitD) could be involved in this process, however, the relationship between VitD status and inflammatory markers has not been wildly studied.
Hypothesis: The aim was to study the association between VitD status and inflammatory markers in patients with DM2 and DN.
Methods: The single-centre randomized study included 62 subjects with DM2 and DN (more than 4 points according to NDS), HbA1c up to 9%. Antihyperglycemic treatment was stable during the study. Patients were randomized in two groups: 5000 IU (group I) and 40000 IU (group II) of cholecalciferol supplementation per week. Body mass index (BMI), glycated hemoglobin (HbA1c), serum 25(OH)D level, Interleukins 6, 10 (IL-6, IL-10) were determined at baseline and after 24 weeks of treatment. The correlation analysis was evaluated by Pearson test.
Results: Group I (n = 31, F16) and Group II (n = 31, F15) were matched for age, gender, BMI and baseline HbA1c levels. VitD insufficient/deficiency was revealed in 78% of diabetic patients with DN. After 6 months of VitD supplementation, the BMI, HbA1c and IL-6 levels significantly decreased, and 25(OH)D and IL-10 concentration increased only in Group II. We found associations between serum 25(OH)D and IL-6 (r = -0.912, p = 0.017) as well as IL-10 (r = 0.903, p = 0.014), and between HbA1c and IL-6 (r = 0.825, p = 0.031) and IL-10 (r = -0.897, p = 0.025) exclusively in Group II after treatment.
Conclusions: VitD supplementation in 40000 IU of cholecalciferol per week during 6 months was associated with improved vitamin D status, pro-inflammatory markers and better glycemic control in patients with DM2 and DN. Vitamin D supplementation in 5000 IU per week did not change vitamin D status and inflammatory markers in this population.
Disclosure
A.P. Stepanova: None. T.L. Karonova: None. M. Galagoudza: None. E.Y. Vasileva: None. E.B. Jude: None.
Relevance. Pre-eclampsia is the most difficult and important problem in obstetrics, it ranks third in the structure of maternal mortality. Until now, there is no single idea of the mechanisms of development of this pathological process. The study of the concentration of MMP-12 in pregnancy will determine its possible role in the development of pre-eclampsia.
Aim. Сompare the dynamics of the concentration of matrix metalloproteinase-12 (MMP-12) in pregnancy complicated and not complicated by preeclampsia.
Materials and methods. A prospective study of two groups of women: the main group is pregnant (n = 17) with preeclampsia (moderate (n = 11) and severe (n = 6)), the comparison group is women whose pregnancy was not complicated by preeclampsia (n = 83). The concentration of matrix metalloproteinase-12 was determined by the method of enzyme immunoassay in serum at 11-13, 22-24, 32-34 weeks of gestation.
Results. In the group of pregnant women without preeclampsia, there was a sharp decrease in the concentration of MMP-12 from the I trimester to II (p = 0.0001), followed by a slight increase to the III trimester. In the group of pregnant women with preeclampsia, an increase in the concentration from the I trimester to II (p = 0.0001) was established. A significant difference in the concentration of MMP-12 between groups in the first trimester of pregnancy was shown (p = 0.0001).
Conclusion. Thus, the results of the study indicate the role of MMP-12 in the initial stages of placentation.
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