insulinoma/obesity

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A multiplicity of protein antigens in subcellular fractions of rat insulinoma tissue are able to stimulate T cells obtained from non-obese diabetic mice.

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Type 1 (insulin-dependent) diabetes mellitus is a T-cell mediated autoimmune disease with a number of different proteins being implicated as target autoantigens. A 38 kDa protein residing in the insulin secretory granule of insulinoma tissue is recognized by T-cell clones from a newly-diagnosed Type

Comparison of insulin sensitivity in patients with insulinoma and obese Type 2 diabetes mellitus.

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Insulin sensitivity was evaluated in 16 insulinoma patients and in 15 obese persons with Type 2 diabetes mellitus by using hyperinsulinaemic clamps and analysis of insulin receptor characteristics on erythrocytes. Significantly decreased insulin sensitivity index (M/l) was found in both insulinoma

[An unusual picture of insulinoma in type-2 diabetes mellitus and morbid obesity].

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METHODS Marked hyperinsulinism was demonstrated in the course of an oral glucose tolerance test (oGTT) in a 63-year-old woman with severe obesity (height 1.59 m, body weight 123 kg, body-mass index 46.4 kg/m2). The diabetic metabolic state, first diagnosed 12 years ago, had been replaced by a low

Surgery in overweight patients with insulinoma: effects on weight loss.

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OBJECTIVE Weight loss induced by the complete resection of insulinoma is controversial in overweight patients. The study sought to explore postoperative weight loss and metabolic changes in overweight insulinoma patients. METHODS A retrospective study was conducted to review the follow-up data of

Intra-arterial calcium stimulation test with hepatic venous sampling for preoperative diagnosis of a large insulinoma in an obese young man.

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Herein, we report the case of a large benign insulinoma in an obese young man with a three-year history of asymptomatic hypoglycaemia. He presented to our outpatient department with a two-week history of dizziness and morning cold sweats. A random serum glucose test revealed hypoglycaemia. Upon

The effect of exogenous hyperinsulinemia on proinsulin secretion in normal man, obese subjects, and patients with insulinoma.

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To examine possible feedback inhibition of insulin on proinsulin secretion, we measured serum proinsulin levels before and after 120 min of euglycemic hyperinsulinemia (90-100 mU/liter) in 11 normal and 7 obese hyperinsulinemic subjects and 6 patients with beta-cell adenoma (n = 4), carcinoma, or

Concurrent insulinoma and impaired glucose tolerance suspected as owing to obesity.

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An obese 68-year-old woman was admitted for examination of fasting hypoglycaemia. A prolonged 18 h fast reduced her plasma glucose without suppressing insulin secretion, while plasma β-hydroxybutyrate levels were suppressed. Despite the prolonged fast, the glucose response to glucagon was increased

Nightly amended IRI/BG ratio in fasting test during sleeping periods in subjects with insulinoma and in normal, diabetic and obese subjects.

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In order to obtain a dynamic picture of the way abnormal insulinemia, as a function of blood glucose, occurs in the morning in subjects with insulinoma, we have measured amended plasma insulin (IRI)/blood glucose (BG) ratio during the fasting period of 4 sleeping subjects with insulinoma. Healthy

Genetic obesity increases pancreatic expression of mitochondrial proteins which regulate cholesterol efflux in BRIN-BD11 insulinoma cells.

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Pancreatic β-cells are sensitive to fluctuations in cholesterol content, which can damage the insulin secretion pathway, contributing to the aetiology of type 2 diabetes mellitus. Cholesterol efflux to (apo)lipoproteins, via ATP-binding cassette (ABC) transporter A1 (ABCA1), can prevent

Proteins spontaneously released by rat insulinoma (RIN) cells are anchored on cell membrane by a glycosyl-phosphatidyl-inositol link and inhibit increased RIN cell adhesion of lymphocytes from type 1 diabetic patients and non-obese diabetic mice in vitro.

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Our group previously reported an assay for the study of lymphocyte adhesion to insulin-producing cells in which xenogeneic rat insulinoma (RIN) cells were used as targets. The present study found an increased number of RIN-cytoadherent lymphocytes in 63 patients with Type 1 diabetes compared with

Recurrent hypoglycemic seizures and obesity: delayed diagnosis of an insulinoma in a 15 year-old boy--final diagnostic localization with endosonography.

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Insulinoma in children and adolescents is extremely rare. In adults diagnosis is frequently delayed due to frequent neuropsychiatric symptoms that are misunderstood. Diagnostic localization is sometimes extremely difficult. We present a case of insulinoma with onset of symptoms at the age of 12.5

Evaluation of Viburnum opulus L. Fruit Phenolics Cytoprotective Potential on Insulinoma MIN6 Cells Relevant for Diabetes Mellitus and Obesity

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In this study, the influence of guelder rose (Viburnum opulus) fruit fresh juice (FJ) and a phenolic-rich fraction (PRF) isolated from juice on mice insulinoma MIN6 cells activities was investigated. Extracts were able to decrease intracellular oxidative stress at the highest non-cytotoxic

Insulinoma and extreme obesity in a patient with MEN1 syndrome.

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Recurrent hypoglycemia and obesity in an adolescent--insulinoma or imitator?

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Insulinoma clinically misdiagnosed as vertebrobasilar insufficiency in an obese patient with recurrent episodes of loss of consciousness.

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