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MICROANGIOPATHIC COMPLICATIONS IN LATENT AUTOIMMUNE DIABETES IN ADULTS (LADA) - RELATIONSHIP WITH THYROID AUTOIMMUNITY Authors: Aura Diana Reghina1,2, Elisabeta Sava1, Suzana Florea1, Simona Fica1 1. Elias University Hospital, Endocrinology and Diabetes Department, UMF Carol Davila, Bucharest, Romania 2. National Institute of Development and Research in Pathology and Biomedical Sciences “Victor Babes”, Bucharest, Romania RESULTS

Background: Patients with LADA are a clinically, immunologically, genetically heterogeneous group and the presence of thyroid autoimmunity (TA) appears to contribute to his heterogeneity. Aim:

Patients with TA had twice the risk of RD compared to patients without TA, odds ratios 2.27 (95% CI 0.8 la 5.7), p=0.004. %

with TA without TA

80 70

75.6

60 50

57.7

40

42.3

30 20

24.4

10 0

With RD

Without RD

The risk of NP was 1.8 times higher in patients with TA compared with patients without TA (95% CI 0.7 la 4.4; p=0.04). %

with TA without TA

The aim was to evaluate the impact of thyroid autoimmunity on microangiopathic complications in LADA patients.

100 80

76.7

60

63.6

40

36.4

20

23.3

0

Without PN

With PN

From 10 patients with DN, 4 of them (40%) had TA compared to 26 patients (27.7%) of 94 without DN. Patients with TA had the probability to develop this complication 1.7 times higher than those without TA, odds ratio 1.74 (95% CI 0.4 la 6.6, p=0.46). %

Without TA With TA

80 60

72.3 60.0

40

40.0

20

27.7

0

Without DN

With DN

Patients with TA are three times more likely to develop AN than patients without TA, odds ratio 3.4 (95% CI 1 la 11, p=0.014). %

Without TA With TA

80 60

74.7

40 20

46.2 25.3

0

Without A N

53.8

Material and method: LADA has been defined by the onset of diabetes at ages above 30 years, the lack of need for insulin therapy for at least 6 months after its first appearance, the presence of anti GAD antibodies (GADA). Positive titers of TPOAb (anti-thyroid peroxidase antibodies ) were observed in 30 (28.8%) out of 104 LADA patients. Prevalence of retinopathy (DR), peripheral neuropathy (PN), autonomic neuropathy (AN) and diabetic nephropathy (DN) were also evaluated.

With A N

Conclusions: Except diabetic nephropathy, the presence of thyroid autoimmunity in patients with LADA has determined a significantly higher prevalence of microangiopathic complications.


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