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A paradoxical reaction after an oral glucose tolerance test revealed a pheochromocytom.
Neuro Endocrinol Lett
December 2024
Department of Internal Medicine, Tokyo Saiseikai Central Hospital, Minato-ku, Tokyo, Japan.
A 33-year-old Japanese man with a history of atopic dermatitis and asthma had never been diagnosed with any apparent glucose intolerance but had been aware of palpitations for >10 years. A 75g oral glucose tolerance test (OGTT) at his physical examination in March 2021 revealed fasting hyperglycemia and post-load hypoglycemia. An OGTT recheck was performed in May 2021 and was normal.
View Article and Find Full Text PDFPalmitic acid induces insulin resistance and oxidative stress-mediated cell injury through accumulation of lipid rafts in murine hepatocytes.
Biochem Biophys Res Commun
December 2024
Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan.
Lipid rafts are subdomains of the cell membrane that are rich in cholesterol and glycolipids, and they are involved in various cellular processes and pathophysiological mechanisms. However, the specific role of lipid rafts in hepatocyte dysfunction during the pathogenesis of metabolic dysfunction-associated steatotic liver disease (MASLD) is not fully understood. In this study, we investigated the impact of lipid rafts on insulin sensitivity and hepatocyte injury induced by saturated free fatty acids (sFFAs) using primary-cultured mouse hepatocytes.
View Article and Find Full Text PDFDeciphering the involvement of norepinephrine and β-adrenergic receptor subtypes in glucose induced insulin secretion: an integrated and exploration using isolated pancreatic islets of C57BL/6J mice.
J Recept Signal Transduct Res
December 2024
Father George Albuquerque Pai Cell and Molecular Biology Laboratory, Department of Biotechnology, School of Life Sciences, St Aloysius (Deemed to be University), Mangaluru, Karnataka, India.
Regulating insulin production by pancreatic beta cells is crucial for maintaining metabolic balance. Previous studies observed elevated neurotransmitter levels, like norepinephrine (NE), in metabolic syndrome mice with impaired insulin secretion. Given the therapeutic potential of β-adrenergic receptors (β-ARs) for diabetes and obesity, and the lack of structural data on murine β-ARs, we aimed to construct and validate 3D models to investigate their roles in insulin secretion regulation.
View Article and Find Full Text PDFDysregulation of miR-21-5p in children with obesity and its predictive value for metabolic syndrome.
Obes Res Clin Pract
December 2024
Department of General Practice, Geriatric Hospital Affiliated To Wuhan University of Science and Technology, Wuhan 433000, China. Electronic address:
Background: microRNAs (miRNAs) could mediate the glucose and lipid metabolism progress in metabolic syndrome (MetS).
Objectives: To analyze the value of miRNA (miR)-21-5p for MetS diagnosis in children with obesity. Function of miR-21-5p has been explored by the prediction of target genes and functional and pathway enrichment analysis.
The Role of Beta-Hydroxybutyrate in Mitigating the Inflammatory and Metabolic Consequences of Uric Acid.
Metabolites
December 2024
Department of Cell Biology and Physiology, Brigham Young University, Provo, UT 84602, USA.
Uric acid (UA), a metabolite of purine and fructose metabolism, is linked to inflammation and metabolic disorders, including gout and cardiovascular disease. Its pro-inflammatory effects are largely driven by the activation of the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, leading to increased cytokine production. Beta-hydroxybutyrate (BHB), a ketone produced during fasting or carbohydrate restriction, has been shown to reduce inflammation.
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