Publications by authors named "Sharon N Admoni"

Article Synopsis
  • The study investigates how genetic variations (SNPs) in the melatonin receptor gene might influence the development of microvascular complications in individuals with type 1 diabetes (T1D).
  • It involves examining eight specific SNPs in a cohort of 489 T1D patients, looking at both current complications and long-term kidney function over an average of eight years.
  • Results indicate that individuals with a significant decline in kidney function have a higher frequency of a specific genetic variant (A allele of rs4862705), suggesting a potential link between melatonin genetics and renal health in diabetes.
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Background And Aim: 11β-Hydroxysteroid dehydrogenase 1 has been implicated in insulin resistance (IR) in the setting of metabolic disorders, and single nucleotide polymorphisms (SNPs) in its encoding gene (HSD11B1) have been associated with type 2 diabetes and metabolic syndrome. In type 1 diabetes (T1D), IR has been related to the development of chronic complications. We investigated the association of HSD11B1 SNPs with microvascular complications and with IR in a Brazilian cohort of T1D individuals.

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The paucity of epidemiological data regarding diabetes complications in Brazil motivated us to evaluate the prevalence rates of distal symmetric polyneuropathy (DSP) and of cardiovascular autonomic neuropathy (CAN) in individuals with type 2 diabetes (T2D) followed in a primary care unit. A total of 551 individuals (59.3% women, 65 years old; diabetes duration of 10 years; HbA1c of 7.

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Background And Aims: Since hyperglycemia promotes inflammation by different pathways and inflammation participates in the development of chronic diabetes complications, we investigated the association between the leukotriene (LT) pathway and microvascular diabetes complications.

Methods And Results: Quantitative polymerase chain reaction was employed to quantify the expression of (encodes 5-lipoxygenase), (encodes one of the LTB4 receptors), and in peripheral blood mononuclear cells from 164 type 1 diabetes (T1D) individuals presenting or not diabetes kidney disease, retinopathy, peripheral neuropathy, and cardiovascular autonomic neuropathy (CAN); 26 nondiabetic subjects were included as controls. LTB4 plasmatic concentrations were also evaluated.

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Purpose: The incidence of cardiac autonomic neuropathy (CAN) in patients with type 1 diabetes (T1D) is frequently underestimated. Individuals with T1D and CAN have an increased mortality risk, mainly from cardiovascular causes. The objectives of the present study were to assess the clinical and laboratory characteristics associated with CAN in patients with T1D and verify the ability of multiple clinical factors to help identify patients with this condition.

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To compare the serum micro-RNAs (miRNAs) profile of individuals with type 1 diabetes without microvascular complications vs. those with multiple severe microvascular complications, in order to identify epigenetically modulated pathways in these two groups of individuals. A total of 10 subjects were selected among individuals followed in the Diabetes Outpatient Clinic and sorted according to the absence or presence of all microvascular complications.

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Article Synopsis
  • The study investigates the link between oxidative stress and diabetic retinopathy (DR) in individuals with type 1 diabetes (T1D), focusing on specific genetic variations (SNPs) in antioxidant genes.
  • It involved 288 participants, categorized by DR stages, and utilized real-time PCR for genetic analysis along with logistic regression to account for other influencing factors.
  • Findings revealed that the T-allele of rs17883901 increases the risk of proliferative DR while the T-allele of rs713041 offers protection against it, highlighting the potential role of these SNPs in DR management.
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Cardiac autonomic neuropathy is a neglected diabetic chronic complication for which genetic predictors are rarely reported. Oxidative stress is implicated in the pathogenesis of microvascular complications, and glutathione peroxidase 4 is involved in the detoxification of peroxides and of reactive oxygen species. Thus, the association of a functional variant in the gene encoding glutathione peroxidase 4 (rs713041) with this diabetic complication was investigated in 341 individuals with type 1 diabetes evaluated for cardiac autonomic neuropathy status (61.

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Article Synopsis
  • The study explores how genetic variants in the DNMT1 gene may influence the risk of complications from diabetes, particularly focusing on metabolic memory caused by past hyperglycemia.
  • Researchers assessed five specific gene variants in a group of 359 individuals with long-term type 1 diabetes to identify any associations with complications like kidney disease and neuropathy.
  • While no significant associations were found in the entire group, one variant was linked to increased cardiovascular neuropathy risk in women, suggesting the potential genetic involvement in diabetes-related microvascular issues.
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Quantitative polymerase chain reaction was employed to quantify expression of two genes coding for advanced glycation end-product receptors [RAGE ( AGER) and AGER1 ( DDOST)] and of the gene coding the deacetylase SIRT1 ( SIRT1) in peripheral blood mononuclear cells from type 1 diabetes patients without [Group A, n = 35; 28.5 (24-39) years old; median (interquartile interval)] or with at least one microvascular complication [Group B, n = 117; 34.5 (30-42) years old]; 31 healthy controls were also included.

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Background: Inpatient hyperglycemia is associated with adverse outcomes in hospitalized patients, with or without known diabetes. The adherence to American College of Endocrinology and American Diabetes Association guidelines recommendations for inpatient glycemic control is still poor, probably because of their complexity and fear of hypoglycemia.

Objective: To create software system that can assist health care providers and hospitalists to manage the insulin therapy orders and turn them into a less complicated issue.

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Aims: Thioredoxin interacting protein (TXNIP), an inhibitor of antioxidant thioredoxin (Trx), is upregulated by hyperglycemia and implicated in pathogenesis of diabetes complications. We evaluated mRNA expressions of genes encoding TXNIP and Trx (TXN) in urinary sediment and peripheral blood mononuclear cells (PBMC) of type 1 diabetes (T1D) patients with different degrees of chronic complications.

Methods: qPCR was employed to quantify target genes in urinary sediment (n = 55) and PBMC (n = 161) from patients sorted by presence or absence of diabetic nephropathy (DN), retinopathy, peripheral and cardiovascular neuropathy; 26 healthy controls and 13 patients presenting non-diabetic nephropathy (focal and segmental glomerulosclerosis, FSGS) were also included.

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This study evaluated the effectiveness of theoretical and practical teaching method in diabetes and doctors' position about feasibility of intensive blood glucose control. Forty-eight internal medicine or endocrinology residents participated in a two-day diabetes immersion course. The participants received training on self-blood glucose monitoring, techniques of insulin administration and carbohydrate counting.

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