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Articles by R. Buzzetti
Total Records ( 3 ) for R. Buzzetti
  E. A. Pronina , E. E. Petraikina , M. B. Antsiferov , O. V. Duchareva , A. Petrone , R. Buzzetti and P. Pozzilli

Aims To provide data on the incidence of Type 1 diabetes (T1D) in Moscow, determined prospectively from 1996 to 2005 for a total of >10 million subjects aged <15years.

Methods Data on T1D incidence in patients with newly discovered T1D resident in Moscow diagnosed between 1January 1996 and 31December 2005 were analysed. Primary ascertainment was based in endocrinology departments of children's hospitals in Moscow. A secondary source were the archives of Moscow Region where patients are registered to obtain exemption from paying for medication.

Results We identified 2031 new cases of T1D patients with a degree of ascertainment through primary and secondary sources of 94%. Overall the incidence rate of the disease was 12.9 per 100000 per year (95% confidence interval 12.3– 13.4). The cumulative risk of the disease was 0.28 per 1000 in the age group 0–4years, 0.84 in the age group 5–9years and 1.8 in the age group 10–14years. The incidence rate in girls increased by a mean of 6% per year in all age groups (P<0.05 for all comparisons), whereas in boys it increased by a mean of 7% in the age group 10–14years. Thirty percent of cases presented with diabetic ketoacidosis and coma at diagnosis, whereas hyperglycaemia without ketonuria was present in 20% of patients.

Conclusions This is the first study to report on validated incidence data for T1D in Moscow. We conclude that the incidence of T1D in Moscow is comparable to that of those European countries having intermediate incidence rates, and that the incidence is increasing.

  S. Zampetti , M. Spoletini , A. Petrone , M. Capizzi , M. L. Arpi , C. Tiberti , S. Di Pietro , E. Bosi , P. Pozzilli , F. Giorgino and R. Buzzetti
  Aims We previously demonstrated the presence of two different populations among adult-onset autoimmune diabetes (latent autoimmume diabetes of adults; LADA) having high or low titre of antibodies to glutamic acid decarboxylase (GADA). The transcription factor 7-like 2 (TCF7L2) gene has been recognized as the major gene associated with Type 2 diabetes. The aim of the present study was to evaluate whether the phenotypic heterogeneity of LADA based on GADA titre is associated with TCF7L2 polymorphisms.
Methods Two hundred and fifty patients identified as LADA, divided into two subgroups with low (≤ 32 arbitrary units) or high (> 32 units) GADA titre, 620 subjects with Type 2 diabetes [from the Non-Insulin Requiring Autoimmune Diabetes (NIRAD) study cohort of 5330 subjects] in addition to 551 consecutive cases of Type 1 diabetes and 545 normoglycaemic subjects were analysed for the rs12255372 and rs7903146 polymorphisms of the TCF7L2 gene using Taqman.
Results The genotype and allele distributions of the two polymorphisms revealed similar frequencies in subjects with low GADA titre and Type 2 diabetes. High GADA titre, Type 1 diabetes and controls also showed comparable frequencies. A significant increase of GT/TT genotypes of the rs12255372 single-nucleotide polymorphism (SNP) and CT/TT genotypes of the rs7903146 SNP was observed in low GADA titre and Type 2 diabetes compared with high GADA titre, Type 1 diabetes and controls (P ≤ 0.04 for both comparisons). The risk alleles of both variants were increased in low GADA titre and Type 2 diabetes compared with high GADA titre, Type 1 diabetes and control subjects (P < 0.02 for all comparisons).
  M. N. Pham , M. I. Hawa , M. Roden , G. Schernthaner , P. Pozzilli , R. Buzzetti , W. A. Scherbaum , J. Seissler , S. Hunter , R. D. G. Leslie , H. Kolb and N. C. Schloot
  Aims  Systemic concentrations of adhesion molecules and chemokines are associated with increased risk of cardiovascular complications. We compared these factors between patients with Type 2 diabetes vs. Type 1 diabetes or latent autoimmune diabetes in adults.

Methods  Serum concentrations of adhesion molecules sE-selectin, sICAM-1 and sVCAM-1, and chemokines CCL2, CCL3 and CCL4 were measured in 61 patients with latent autoimmune diabetes in adults, 90 with Type 1 diabetes, 465 with Type 2 diabetes and in 41 control subjects, using multiple regression models to adjust for possible confounders.

Results  Patients with Type 2 diabetes exhibited greater concentrations of adhesion molecules (< 0.02) than those with Type 1 diabetes, latent autoimmune diabetes in adults and control subjects. These differences persisted upon adjustments for age, sex, BMI, blood pressure and diabetes duration (< 0.04). Higher BMI positively correlated with concentrations of adhesion molecules in all subjects (< 0.0001). Concentrations of sE-selectin positively related to diastolic (β = 0.31) and systolic (β = 0.28) blood pressure in the adjusted model (< 0.04). Concentrations of the chemokines, CCL2 and CCL4, did not differ between groups, while CCL3 was higher in patients with latent autoimmune diabetes in adults and Type 1 diabetes than in those with Type 2 diabetes and control subjects (< 0.05).

Conclusions  Systemic concentrations of adhesion molecules, but not chemokines, relate to cardiovascular risk factors, but remain higher after adjustments in Type 2 diabetes, suggesting a diabetes-type specific effect without difference between latent autoimmune diabetes in adults and Type 1 diabetes, despite their dissimilar phenotype.

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