scholarly journals Associations of TP53 codon 72 polymorphism with complications and comorbidities in patients with type 1 diabetes

Author(s):  
Bartosz Słomiński ◽  
Maria Skrzypkowska ◽  
Monika Ryba-Stanisławowska ◽  
Małgorzata Myśliwiec ◽  
Piotr Trzonkowski

Abstract Wild-type TP53 plays an important role in the regulation of immune response and systemic inflammation. In type 1 diabetes (T1D), TP53 pathways are upregulated and an increased susceptibility to apoptosis is observed. We hypothesize that TP53 codon 72 polymorphism could be associated with complications and comorbidities in patients with T1D. We have investigated the associations of the TP53 codon 72 polymorphism with the T1D complications and comorbidities (retinopathy, nephropathy, hypertension, dyslipidemia, autoimmune thyroiditis, and celiac disease) in 350 patients. The key results of our approach are as follows: (1) In diabetic subjects, the Pro/Pro genotype is associated with an increased risk of microvascular complications, dyslipidemia, and celiac disease; (2) the Arg/Arg variant is associated with a decreased risk of autoimmune thyroiditis and celiac disease; (3) the Pro allele is associated with an increased risk of dyslipidemia, autoimmune thyroiditis, and celiac disease. Although further studies are required, our results for the first time indicate that the TP53 codon 72 polymorphism could be considered a genetic marker to predict the increased susceptibility to some T1D complications and comorbidities. Key messages We analyzed the TP53 codon 72 polymorphism in patients with T1D. Pro/Pro genotype is associated with an increased risk of microvascular complications, dyslipidemia, and celiac disease. The Arg/Arg variant is associated with a decreased risk of autoimmune thyroiditis and celiac disease. The Pro allele is associated with an increased risk of dyslipidemia, autoimmune thyroiditis, and celiac disease.

2019 ◽  
Vol 37 (12) ◽  
pp. 2136-2142
Author(s):  
M.R. Chetan ◽  
J.K. Miksza ◽  
I. Lawrence ◽  
R.M. Anjana ◽  
R. Unnikrishnan ◽  
...  

2020 ◽  
Vol 21 (24) ◽  
pp. 9723
Author(s):  
Aleksandra Ryk ◽  
Aleksandra Łosiewicz ◽  
Arkadiusz Michalak ◽  
Wojciech Fendler

People with type 1 diabetes have an increased risk of developing microvascular complications, which have a negative impact on the quality of life and reduce life expectancy. Numerous studies in animals with experimental diabetes show that c-peptide supplementation exerts beneficial effects on diabetes-induced damage in peripheral nerves and kidneys. There is substantial evidence that c-peptide counteracts the detrimental changes caused by hyperglycemia at the cellular level, such as decreased activation of endothelial nitric oxide synthase and sodium potassium ATPase, and increase in formation of pro-inflammatory molecules mediated by nuclear factor kappa-light-chain-enhancer of activated B cells: cytokines, chemokines, cell adhesion molecules, vascular endothelial growth factor, and transforming growth factor beta. However, despite positive results from cell and animal studies, no successful c-peptide replacement therapies have been developed so far. Therefore, it is important to improve our understanding of the impact of c-peptide on the pathophysiology of microvascular complications to develop novel c-peptide-based treatments. This article aims to review current knowledge on the impact of c-peptide on diabetic neuro- and nephropathy and to evaluate its potential therapeutic role.


2021 ◽  
Author(s):  
Rose Gubitosi-Klug ◽  
Xiaoyu Gao ◽  
Rodica Pop-Busui ◽  
Ian H de Boer ◽  
Neill White ◽  
...  

<b>Objective:</b> We examined whether the presence of microvascular complications was associated with increased subsequent risk of cardiovascular disease (CVD) among participants with type 1 diabetes in the Diabetes Control and Complications Trial and Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) Study followed for over 35 years. <p><b>Research Design and Methods:</b> Standardized longitudinal data collection included: 1) stereoscopic seven-field retinal fundus photography centrally-graded for retinopathy stage and clinically significant macular edema; 2) urinary albumin excretion rate (AER) and estimated glomerular filtration rate (eGFR); 3) cardiovascular autonomic neuropathy (CAN) reflex testing; and 4) adjudicated CVD events, including death from cardiovascular disease, nonfatal myocardial infarction, stroke, subclinical myocardial infarction on ECG, confirmed angina, or coronary artery revascularization. Cox proportional hazard models assessed the association of microvascular complications with subsequent risk of CVD. </p> <p><b>Results:</b> 239 participants developed CVD, including 120 participants who suffered major adverse cardiovascular events (MACE) defined as non-fatal myocardial infarction, non-fatal stroke or cardiovascular death. The presence of microvascular disease (diabetic retinopathy, kidney disease, or CAN) was associated with increased risk of subsequent CVD and MACE (hazard ratios 1.86 to 3.18 and 2.09 to 3.63, respectively); associations that remained significant after adjusting for age and HbA1c. After adjustment for traditional CVD risk factors, however, only sustained AER≥30 mg/24hr occurring alone and/or with eGFR<60 ml/min/1.73m, and the presence of both retinal and kidney disease remained associated with CVD. </p> <p><b>Conclusions:</b> Advanced microvascular disease, especially moderate to severe albuminuria or eGFR<60 ml/min/1.73m<sup>2</sup>, conveyed an increased risk of subsequent cardiovascular disease in the DCCT/EDIC cohort. </p>


Author(s):  
Sebastian Hörber ◽  
Sarah Hudak ◽  
Martin Kächele ◽  
Dietrich Overkamp ◽  
Andreas Fritsche ◽  
...  

Summary Diabetic ketoacidosis is a life-threatening complication of diabetes mellitus. It usually occurs in patients with type 1 diabetes where it is typically associated with only moderately increased blood glucose. Here, we report the case of a 52-year-old female patient who was admitted to the emergency unit with severely altered mental status but stable vital signs. Laboratory results on admission revealed very high blood glucose (1687 mg/dL/93.6 mmol/L) and severe acidosis (pH <7) with proof of ketone bodies in serum and urine. Past history revealed a paranoid schizophrenia diagnosed 10 years ago and for which the patient was treated with risperidone for many years. Acute treatment with intravenous fluids, intravenous insulin infusion and sodium bicarbonate improved the symptoms. Further laboratory investigations confirmed diagnosis of autoimmune type 1 diabetes. After normalization of blood glucose levels, the patient could soon be discharged with a subcutaneous insulin therapy. Learning points: Diabetic ketoacidosis as first manifestation of type 1 diabetes can occur with markedly elevated blood glucose concentrations in elder patients. Atypical antipsychotics are associated with hyperglycemia and an increased risk of new-onset diabetes. First report of risperidone-associated diabetic ketoacidosis in new-onset type 1 diabetes. Patients treated with atypical antipsychotics require special care and regular laboratory examinations to detect hyperglycemia and diabetic ketoacidosis. In cases when the diagnosis is in doubt, blood gas analysis as well as determination of C-peptide and islet autoantibodies can help to establish the definite diabetes type.


Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4444
Author(s):  
Hanna Söderström ◽  
Julia Rehn ◽  
Matti Cervin ◽  
Cathrine Ahlstermark ◽  
Mara Cerqueiro Bybrant ◽  
...  

Children with type 1 diabetes (T1D) are at increased risk of celiac disease (CD). The replacement of insulin in T1D, and the exclusion of gluten in CD, are lifelong, burdensome treatments. Compliance to a gluten-free diet (GFD) in children with CD is reported to be high, while compliance in children with both diseases has scarcely been studied. To examine compliance to a GFD in children with both T1D and CD, we analyzed tissue transglutaminase IgA-antibodies (tTGA). Moreover, associations between compliance and age, sex, glycemic control, ketoacidosis (DKA), body mass index (BMI), and time of CD diagnosis were investigated. Of the 743 children diagnosed with T1D in southern Sweden between 2005 and 2012, 9% were also diagnosed with CD. Of these, 68% showed good compliance to a GFD, 18% showed intermediate compliance, and 14% were classified as non-compliant. Higher age, poorer HbA1c, and more DKAs were significantly (p < 0.05) associated with poorer compliance. In conclusion, we found that compliance to a GFD in children with T1D and CD is likely be lower than in children with CD only. Our results indicate that children with both T1D and CD could need intensified dietary support and that older children and children with poor metabolic control are especially vulnerable subgroups.


2013 ◽  
Vol 31 (2) ◽  
pp. 156-164 ◽  
Author(s):  
V. Harjutsalo ◽  
M. Feodoroff ◽  
C. Forsblom ◽  
P.-H. Groop ◽  

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