scholarly journals Neurochemical Profile of Patients with Type 1 Diabetes Measured by 1H-MRS at 4 T

2013 ◽  
Vol 33 (5) ◽  
pp. 754-759 ◽  
Author(s):  
Silvia Mangia ◽  
Anjali F Kumar ◽  
Amir A Moheet ◽  
Rachel J Roberts ◽  
Lynn E Eberly ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Type 1 Diabetes ◽  
Body Mass ◽  
Gray Matter ◽  
Occipital Lobe ◽  
Resonance Spectroscopy ◽  
1H Mrs ◽  
Neurochemical Profile ◽  
The Impact

The impact of type 1 diabetes mellitus (T1DM) on a comprehensive neurochemical profile of the human brain has not been reported yet. Our previous proton magnetic resonance spectroscopy (1H-MRS) studies on T1DM were focused exclusively on the assessment of brain glucose levels. In this study, we reexamined our previously acquired data to investigate concentration differences of a broad range of neurochemicals in T1DM subjects relative to nondiabetic controls. We selected MRS data from 13 subjects (4 F/9 M, age = 41 ± 11 years, body mass index = 26 ± 3 kg/m2) with well-controlled T1DM (disease duration = 22 ± 12 years, A1C = 7.5% ± 2.0%) and 32 nondiabetic controls (14 F/18 M, age = 36 ± 10 years, body mass index = 27 ± 6 kg/m2) acquired during a hyperglycemic clamp (target [Glc]plasma = 300 ± 15 mg/dL). The 1H-MR spectra were collected from two 15.6-mL voxels localized in gray-matter-rich occipital lobe and in white-matter-rich parieto-occipital region using ultra-short echo-time STEAM at 4 T. LCModel analysis allowed reliable quantification of 17 brain metabolites. Lower levels of N-acetylaspartate (by 6%, P = 0.007) and glutamate (by 6%, P = 0.045) were observed in the gray matter of T1DM patients as compared with controls, which might indicate a partial neuronal loss or dysfunction as a consequence of long-term T1DM. No other differences in metabolites were observed between subjects with T1DM and controls.

scholarly journals The Role of Age and Excess Body Mass Index in Progression to Type 1 Diabetes in At-Risk Adults

2017 ◽  
Vol 102 (12) ◽  
pp. 4596-4603
Author(s):  
Christine T Ferrara ◽  
Susan M Geyer ◽  
Carmella Evans-Molina ◽  
Ingrid M Libman ◽  
Dorothy J Becker ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Type 1 Diabetes ◽  
Body Mass ◽  
Protective Factor ◽  
Diabetes Incidence ◽  
Increased Risk ◽  
Diabetes Progression ◽  
The Impact

Abstract Background Given the global rise in both type 1 diabetes incidence and obesity, the role of body mass index (BMI) on type 1 diabetes pathophysiology has gained great interest. Sustained excess BMI in pediatric participants of the TrialNet Pathway to Prevention (PTP) cohort increased risk for progression to type 1 diabetes, but the effects of age and obesity in adults remain largely unknown. Objective To determine the effect of age and sustained obesity on the risk for type 1 diabetes in adult participants in the TrialNet PTP cohort (i.e., nondiabetic autoantibody-positive relatives of patients with type 1 diabetes). Research Design and Methods Longitudinally accumulated BMI >25 kg/m2 was calculated to generate a cumulative excess BMI (ceBMI) for each participant, with ceBMI values ≥0 kg/m2 and ≥5 kg/m2 representing sustained overweight or obese status, respectively. Recursive partitioning analysis yielded sex- and age-specific thresholds for ceBMI that confer the greatest risk for type 1 diabetes progression. Results In this cohort of 665 adults (age 20 to 50 years; median follow-up, 3.9 years), 49 participants developed type 1 diabetes. Age was an independent protective factor for type 1 diabetes progression (hazard ratio, 0.95; P = 0.008), with a threshold of >35 years that reduced risk for type 1 diabetes. In men age >35 years and women age <35 years, sustained obesity (ceBMI ≥5 kg/m2) increased the risk for type 1 diabetes. Conclusions Age is an important factor for type 1 diabetes progression in adults and influences the impact of elevated BMI, indicating an interplay of excess weight, age, and sex in adult type 1 diabetes pathophysiology.

Relationship between hypoglycaemia, body mass index and quality of life among patients with type 1 diabetes: Observations from the DEPICT clinical trial programme

2020 ◽  
Vol 22 (5) ◽  
pp. 857-865
Author(s):  
Jason Gordon ◽  
Lee Beresford‐Hulme ◽  
Hayley Bennett ◽  
Amarjeet Tank ◽  
Christopher Edmonds ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Clinical Trial ◽  
Body Mass Index ◽  
Type 1 Diabetes ◽  
Body Mass ◽  
Clinical Trial Programme

scholarly journals Effects of Metformin Added to Insulin in Adolescents with Type 1 Diabetes: An Exploratory Crossover Randomized Trial

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Daizhi Yang ◽  
Jinhua Yan ◽  
Hongrong Deng ◽  
Xubin Yang ◽  
Sihui Luo ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Type 1 Diabetes ◽  
Insulin Sensitivity ◽  
Body Mass ◽  
Autonomic Function ◽  
Insulin Dose ◽  
Glucose Variability

Background. To comprehensively assess the effects of metformin added to insulin on metabolic control, insulin sensitivity, and cardiovascular autonomic function in adolescents with type 1 diabetes. Materials and Methods. This was an exploratory, crossover, randomized trial conducted in adolescents with type 1 diabetes aged 12-18 years old. Participants were randomly received metformin (≤1000 mg/d) added to insulin for 24 weeks followed by insulin monotherapy for a subsequent 24 weeks or vice versa. Blood pressure, body mass index, insulin dose, estimated insulin sensitivity, glycated hemoglobin A1c (HbA1c), and lipid profiles were measured, with a 72-hour continuous glucose monitoring and 24-hour Holter monitoring performed at baseline, 24, and 50 weeks for the assessments of glucose variability and heart rate variability. Results. Seventeen patients with mean ± SD age 14.4 ± 2.3   years , body mass index 18.17 ± 1.81   kg / m 2 , median (IQR) diabetes duration 4.50 (3.58, 6.92) years, and HbA1c 9.0% (8.5%, 9.4%) were enrolled. The between-group difference in HbA1c of 0.28% (95% CI -0.39 to 0.95%) was not significant ( P = 0.40 ). Changes in body mass index, insulin dose, blood pressure, lipid profiles, and estimated insulin sensitivity were similar for metformin add-on vs. insulin monotherapy. Glucose variability also did not differ. Compared with insulin monotherapy, metformin add-on significantly increased multiple heart rate variability parameters. Conclusions. Metformin added to insulin did not improve metabolic control or glucose variability in lean/normal-weight adolescents with type 1 diabetes. However, metformin added to insulin significantly increased heart rate variability, suggesting that metformin might improve cardiovascular autonomic function in this population.

Differences in sleep architecture according to body mass index in children with type 1 diabetes

2019 ◽  
Vol 21 (1) ◽  
pp. 98-105
Author(s):  
Salaheddin H. Elrokhsi ◽  
Grai P. Bluez ◽  
Cindy N. Chin ◽  
Mark D. Wheeler ◽  
Graciela E. Silva ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Type 1 Diabetes ◽  
Body Mass ◽  
Sleep Architecture
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