scholarly journals The Prediction of Type 1 Diabetes in discordant and concordant families: 16 years of follow-up. Focus on the future

2014 ◽  
Vol 17 (3) ◽  
pp. 83-89
Author(s):  
Elena Vital'evna Titovich ◽  
Tamara Leonidovna Kuraeva ◽  
Olga Nikolaevna Ivanova ◽  
Svetlana Mikhailovna Stepanova ◽  
Valentina Alexandrovna Peterkova ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
High Risk ◽  
Low Risk ◽  
Research Centre ◽  
Sick People ◽  
Immunological Markers ◽  
Forecasting Methods ◽  
Hla Genotypes

For 40 years, research continues to improve the forecasting methods and the development of effective and safe methods of preventing type 1 diabetes mellitus (T1DM). Аim. Prediction of the early preclinical stage of T1DM. Materials and methods. We studied the predisposing and protective haplotypes (HLA-DRB1, gene DQ) together with immunological markers (ICA, GADA, IAA) in 224 discordant/concordant families. Results. At the Endocrinology Research Centre, population and family risks of the development of T1DM in Russia were calculated on the basis of population genetic approaches. The analysis of the prevalence of HLA genotypes among T1DM patients revealed that the high-risk haplotypes in the structure of genotype(s) DQ2 and/or DQ8 in combination with the others were 78%: of these genotypes DQ2/DQ8, DQ2/DQ2, and DQ8/DQ8 accounted for 35%; DQ2/X* and DQ8/X* accounted for 43%; and the low-risk genotype Х*/Х* accounted for 22%. The genotype Х/Х consisted of weaker predisposing haplotypes that were specific to the Russian population in combination with neutral haplotypes or those consisting of neutral haplotypes only. The analysis of patients with T1DM genotypes revealed that high-risk genotypes (DQ2/DQ8) were more common in ill children up to the age of 5 (33% of cases) than in T1DM children over 10 years (23%) (p=0.05). Conversely, the low-risk genotypes were significantly less likely to be found in children with manifestations of diabetes up to 5 years than in sick people over 10 years [5% and 13%, respectively (p

scholarly journals Exocrine pancreas function is impaired in adult relatives of patients with type 1 diabetes

2021 ◽  
Author(s):  
Anna Giovenzana ◽  
Federica Vecchio ◽  
Federica Cugnata ◽  
Alessandro Nonis ◽  
Alessandra Mandelli ◽  
...  
Keyword(s):  
At Risk ◽  
Type 1 Diabetes ◽  
High Risk ◽  
Exocrine Pancreas ◽  
Pancreatic Enzyme ◽  
Low Risk ◽  
C Peptide ◽  
Hla Genotypes ◽  
Pancreas Function

Abstract Aims Alterations of the exocrine pancreas have been reported in type 1 diabetes, but their contribution to the pathogenesis of the disease is poorly understood. Here, we investigated markers of exocrine pancreas dysfunction in individuals at-risk of developing type 1 diabetes. Methods Serum P-amylase and lipase levels were assessed in samples obtained from healthy controls, patients with new onset type 1 diabetes, relatives participating to the TrialNet Pathway to Prevention who were, at blood collection, autoantibody negative or positive for a single autoantibody (low-risk individuals), and positive for multiple autoantibodies (high-risk individuals). Linear mixed models were adopted to estimate variation of pancreatic enzymes among the groups and to evaluate the influence of high-risk HLA genotypes and residual beta cell function on exocrine pancreas function. Results In adults, but not children, reduced levels of P-amylase and lipase were shown in at-risk individuals, including (for P-amylase levels only) those at low-risk, and in T1Dnew. Furthermore, while high-risk HLA genotypes negatively affected P-amylase levels in autoantibody negative adult individuals, fasting C-peptide levels did not correlate with pancreatic enzyme levels. Conclusions Exocrine pancreas dysfunction precedes the onset of type 1 diabetes in adult at-risk individuals and may be unrelated to fasting C-peptide levels.

scholarly journals Country-specific birth weight and length in type 1 diabetes high-risk HLA genotypes in combination with prenatal characteristics

2011 ◽  
Vol 31 (12) ◽  
pp. 764-769 ◽  
Author(s):  
Y Sterner ◽  
◽  
C Törn ◽  
H-S Lee ◽  
H Larsson ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Birth Weight ◽  
High Risk ◽  
Hla Genotypes ◽  
Country Specific

scholarly journals Vascular Effects of ACE (Angiotensin-Converting Enzyme) Inhibitors and Statins in Adolescents With Type 1 Diabetes

Hypertension ◽  
2020 ◽  
Vol 76 (6) ◽  
pp. 1734-1743
Author(s):  
Scott T. Chiesa ◽  
M. Loredana Marcovecchio ◽  
Paul Benitez-Aguirre ◽  
Fergus J. Cameron ◽  
Maria E. Craig ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
High Risk ◽  
Pulse Wave Velocity ◽  
Pulse Wave ◽  
Controlled Trial ◽  
Reactive Hyperemia ◽  
Flow Mediated Dilation ◽  
Reactive Hyperemia Index

An increased albumin-creatinine ratio within the normal range can identify adolescents at higher risk of developing adverse cardio-renal outcomes as they progress into adulthood. Utilizing a parallel randomized controlled trial and observational cohort study, we characterized the progression of vascular phenotypes throughout this important period and investigated the effect of ACE (angiotensin-converting enzyme) inhibitors and statins in high-risk adolescents. Endothelial function (flow-mediated dilation and reactive hyperemia index) and arterial stiffness (carotid-femoral pulse wave velocity) were assessed in 158 high-risk participants recruited to a randomized, double-blind placebo-controlled 2×2 factorial trial (randomized, placebo-controlled trial) of ACE inhibitors and/or statins in adolescents with type 1 diabetes (AdDIT [Adolescent Type 1 Diabetes cardio-renal Intervention Trial]). Identical measures were also assessed in 215 lower-risk individuals recruited to a parallel observational study. In the randomized, placebo-controlled trial, high-risk patients randomized to ACE inhibitors had improved flow-mediated dilation after 2 to 4 years of follow-up (mean [95% CI]: 6.6% [6.0–7.2] versus 5.3% [4.7–5.9]; P =0.005), whereas no effect was observed following statin use (6.2% [5.5–6.8] versus 5.8% [5.1–6.4]; P =0.358). In the observational study, patients classed as high-risk based on albumin-creatinine ratio showed evidence of endothelial dysfunction at the end of follow-up (flow-mediated dilation=4.8% [3.8–5.9] versus 6.3% [5.8–6.7] for high-risk versus low-risk groups; P =0.015). Neither reactive hyperemia index nor pulse wave velocity were affected by either treatment ( P >0.05 for both), but both were found to increase over the duration of follow-up (0.07 [0.03–0.12]; P =0.001 and 0.5 m/s [0.4–0.6]; P <0.001 for reactive hyperemia index and pulse wave velocity, respectively). ACE inhibitors improve endothelial function in high-risk adolescents as they transition through puberty. The longer-term protective effects of this intervention at this early age remain to be determined. Registration— URL: https://www.clinicaltrials.gov ; Unique identifier NCT01581476.

scholarly journals T Cell Expression and Release of Kidney Injury Molecule-1 in Response to Glucose Variations Initiates Kidney Injury in Early Diabetes

2021 ◽  
Author(s):  
Josephine M. Forbes ◽  
Domenica A. McCarthy ◽  
Andrew J. Kassianos ◽  
Tracey Baskerville ◽  
Amelia J. Fotheringham ◽  
...  
Keyword(s):  
T Cells ◽  
Type 1 Diabetes ◽  
T Cell ◽  
High Risk ◽  
Kidney Disease ◽  
Kidney Injury ◽  
Glycemic Variability ◽  
Low Risk ◽  
Kidney Injury Molecule 1

Half of the mortality in diabetes is seen in individuals <50 years of age and commonly predicted by the early onset of kidney disease (DKD). In Type 1 diabetes, increased uACR (urinary albumin-creatinine ratio) during adolescence defines this risk, but the pathological factors responsible remain unknown. We postulated that early in diabetes, glucose variations contribute to kidney injury molecule- 1 (KIM-1) release from circulating T cells, elevating uACR and DKD risk. <p>DKD risk was assigned in youth with type 1 diabetes [n=100; 20.0±2.8 yrs; M:F-54:46, HbA<sub>1C</sub>-66.1(12.3) mmol/mol; diabetes duration-10.7±5.2 yrs; BMI-24.5(5.3) kg.m<sup>-2</sup>] and 10 year historical uACR, HbA<sub>1C</sub> and random blood glucose concentrations collected retrospectively. Glucose fluctuations in the absence of diabetes were also compared to streptozotocin diabetes in <i>Apolipoprotein E-/-</i> mice. Kidney biopsies were used to examine infiltration of KIM-1 expressing T cells in DKD and compared with other chronic kidney disease.</p> <p>Individuals at high risk for DKD had persistent elevations in uACR (uACR<sub>AUC0-10yrs</sub>, 29.7±8.8 vs 4.5±0.5; <i>P</i><0.01 vs low risk) and early kidney dysfunction including ~8.3ml.min<sup>-1</sup>.1.73m<sup>-2</sup> higher estimated glomerular filtration rates (eGFR<sub>SCHWARTZ</sub>; <i>P<sub>adj</sub></i> <0.031 vs low risk) and plasma KIM-1 concentrations (~15% higher vs low risk;<i> P</i><0.034). High risk individuals had greater glycemic variability and increased peripheral blood T cell KIM-1 expression, particularly on CD8+ T cells. These findings were confirmed in a murine model of glycemic variability both in the presence and absence of diabetes. KIM-1+ T cells were also infiltrating kidney biopsies from individuals with DKD. Healthy primary human proximal tubule epithelial cells exposed to plasma from high risk youth with diabetes showed elevated collagen IV and SGLT2 expression, alleviated with KIM-1 blockade. Taken together, these studies suggest that glycemic variations confer risk for DKD in diabetes via increased CD8+ T cell production of KIM-1.<b><br> </b></p>

scholarly journals Losing Track of Lipids in Children and Adolescents with Type 1 Diabetes: Towards Individualized Patient Care

2019 ◽  
Author(s):  
Josine C. van der Heyden ◽  
Erwin Birnie ◽  
Sarah A. Bovenberg ◽  
Pim Dekker ◽  
Henk J. Veeze ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
High Risk ◽  
Children And Adolescents ◽  
Risk Score ◽  
Low Risk ◽  
Diabetes Duration ◽  
Lipid Levels ◽  
Short Term ◽  
The Impact

Abstract Aim To assess 1) the prevalence of children and adolescents with type 1 diabetes (T1D) changing from low-risk into borderline-high-risk lipid levels or from borderline-high-risk into high-risk lipid levels (‘lose track of lipids’) and 2) the power of a risk score including the determinants HbA1c, body mass index (BMI), gender, age, diabetes duration and ethnicity in predicting which patients lose track of lipids. Methods 651 children and adolescents with T1D were included in this longitudinal retrospective cohort study. Lipid dynamics and the impact of the risk score on losing track of lipids were evaluated. Kaplan-Meier analysis was used to estimate screening intervals. Results 31–43% percent of the patients had lost track of one or more lipids at the next lipid measurement. This happened more frequently in patients with a low-risk lipid level at start. Depending on the lipid parameter, 5% of patients with low-risk lipid levels lost track of lipids after 13–23 months. The risk score based on concomitant information on the determinants was moderately able to predict which patients would lose track of lipids on the short term. Conclusions A considerable number of children and adolescents with T1D loses track of lipids and does so within a 2-year screening interval. The predictive power of a risk score including age, BMI, gender, HbA1c, diabetes duration and ethnicity is only moderate. Future research should focus on another approach to the determinants used in this study or other determinants predictive of losing track of lipids on the short term.

scholarly journals T Cell Expression and Release of Kidney Injury Molecule-1 in Response to Glucose Variations Initiates Kidney Injury in Early Diabetes

2021 ◽  
Author(s):  
Josephine M. Forbes ◽  
Domenica A. McCarthy ◽  
Andrew J. Kassianos ◽  
Tracey Baskerville ◽  
Amelia J. Fotheringham ◽  
...  
Keyword(s):  
T Cells ◽  
Type 1 Diabetes ◽  
T Cell ◽  
High Risk ◽  
Kidney Disease ◽  
Kidney Injury ◽  
Glycemic Variability ◽  
Low Risk ◽  
Kidney Injury Molecule 1

Half of the mortality in diabetes is seen in individuals <50 years of age and commonly predicted by the early onset of kidney disease (DKD). In Type 1 diabetes, increased uACR (urinary albumin-creatinine ratio) during adolescence defines this risk, but the pathological factors responsible remain unknown. We postulated that early in diabetes, glucose variations contribute to kidney injury molecule- 1 (KIM-1) release from circulating T cells, elevating uACR and DKD risk. <p>DKD risk was assigned in youth with type 1 diabetes [n=100; 20.0±2.8 yrs; M:F-54:46, HbA<sub>1C</sub>-66.1(12.3) mmol/mol; diabetes duration-10.7±5.2 yrs; BMI-24.5(5.3) kg.m<sup>-2</sup>] and 10 year historical uACR, HbA<sub>1C</sub> and random blood glucose concentrations collected retrospectively. Glucose fluctuations in the absence of diabetes were also compared to streptozotocin diabetes in <i>Apolipoprotein E-/-</i> mice. Kidney biopsies were used to examine infiltration of KIM-1 expressing T cells in DKD and compared with other chronic kidney disease.</p> <p>Individuals at high risk for DKD had persistent elevations in uACR (uACR<sub>AUC0-10yrs</sub>, 29.7±8.8 vs 4.5±0.5; <i>P</i><0.01 vs low risk) and early kidney dysfunction including ~8.3ml.min<sup>-1</sup>.1.73m<sup>-2</sup> higher estimated glomerular filtration rates (eGFR<sub>SCHWARTZ</sub>; <i>P<sub>adj</sub></i> <0.031 vs low risk) and plasma KIM-1 concentrations (~15% higher vs low risk;<i> P</i><0.034). High risk individuals had greater glycemic variability and increased peripheral blood T cell KIM-1 expression, particularly on CD8+ T cells. These findings were confirmed in a murine model of glycemic variability both in the presence and absence of diabetes. KIM-1+ T cells were also infiltrating kidney biopsies from individuals with DKD. Healthy primary human proximal tubule epithelial cells exposed to plasma from high risk youth with diabetes showed elevated collagen IV and SGLT2 expression, alleviated with KIM-1 blockade. Taken together, these studies suggest that glycemic variations confer risk for DKD in diabetes via increased CD8+ T cell production of KIM-1.<b><br> </b></p>

Screening for coeliac disease in 1624 mainly asymptomatic children with type 1 diabetes: is genotyping for coeliac-specific human leucocyte antigen the right approach?

2018 ◽  
Vol 104 (4) ◽  
pp. 354-359 ◽  
Author(s):  
Elisabeth Binder ◽  
Tilmann Rohrer ◽  
Christian Denzer ◽  
Wolfgang Marg ◽  
Ute Ohlenschläger ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Coeliac Disease ◽  
Human Leucocyte Antigen ◽  
Screening Method ◽  
First Line ◽  
Hla Genotypes ◽  
Hla Genotyping ◽  
Hla Dq2

ObjectivesTo investigate the frequency of coeliac disease (CD)-specific human leucocyte antigen (HLA) genotypes in paediatric patients with type 1 diabetes (T1D), who are known to have a higher prevalence of CD than the general population, and to evaluate whether HLA genotyping is a suitable first-line screening method for CD.Study designThe study was a multicentre observational analysis of patients with T1D aged <20 years of whom a subgroup had undergone HLA genotyping. Patient data were retrieved from the Diabetes Prospective Follow-up database, a large diabetes follow-up registry. The present analysis included data from 439 centres throughout Germany, Austria, Switzerland and Luxembourg.ResultsIn March 2017, the database contained 75 202 patients with T1D (53% male, mean age (SD) 14.6 (4.1) years, mean age at diagnosis 8.8 (4.3) years and mean diabetes duration 5.8 (4.3) years). 1624 patients had undergone coeliac-specific HLA genotyping, of whom 1344 (82.8%) were positive for HLA-DQ2, HLA-DQ8 or both, while 17.2% had no coeliac-specific HLA-markers. 26.6% of at-risk patients had a clinical suspected diagnosis of CD, and 3.6% had biopsy-proven CD.ConclusionsGenotyping for HLA-DQ2, HLA-DQ8 or both is positive in the vast majority (>80%) of patients with T1D. Therefore, screening for coeliac-specific HLA genotypes as a first-line test is not a suitable method to exclude CD in T1D. Regular screening for coeliac-specific antibodies in T1D is still recommended.

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