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Glucagon-like peptide1 receptor agonist treatment of cystic fibrosis-related diabetes complicated by obesity: A cases series and literature review.
J Clin Transl Endocrinol
December 2024
Division of Endocrinology Diabetes and Metabolism, Department of Medicine, University of Minnesota, Minneapolis, MN, USA.
Cystic fibrosis-related diabetes (CFRD) is the most common non-pulmonary comorbidity in people with cystic fibrosis (CF). Current guidelines recommend insulin therapy as the treatment of choice for people with CFRD. In the past, obesity and overweight were uncommon in individuals with CF.
View Article and Find Full Text PDFThe role of multimodality imaging in diabetic cardiomyopathy: a brief review.
Front Endocrinol (Lausanne)
December 2024
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States.
Diabetic cardiomyopathy (DMCM), defined as left ventricular dysfunction in the setting of diabetes mellitus without hypertension, coronary artery disease or valvular heart disease, is a well-recognized entity whose prevalence is certainly predicted to increase alongside the rising incidence and prevalence of diabetes mellitus. The pathophysiology of DMCM stems from hyperglycemia and insulin resistance, resulting in oxidative stress, inflammation, cardiomyocyte death, and fibrosis. These perturbations lead to left ventricular hypertrophy with associated impaired relaxation early in the course of the disease, and eventually culminating in combined systolic and diastolic heart failure.
View Article and Find Full Text PDFDiabetes is associated with the dysfunction of glucagon-producing pancreatic islet α-cells, although the underlying mechanisms regulating glucagon secretion and α-cell dysfunction remain unclear. While insulin secretion from pancreatic β-cells has long been known to be partly controlled by intracellular phospholipid signaling, very little is known about the role of phospholipids in glucagon secretion. Here we show that TMEM55A, a lipid phosphatase that dephosphorylates phosphatidylinositol-4,5-bisphosphate (PIP2) to phosphatidylinositol-5-phosphate (PI5P), regulates α-cell exocytosis and glucagon secretion.
View Article and Find Full Text PDFHuman endocrine cell differentiation and islet morphogenesis play critical roles in determining islet cell mass and function, but the events and timeline of these processes are incompletely defined. To better understand early human islet cell development and maturation, we collected 115 pediatric pancreata and mapped morphological and spatiotemporal changes from birth through the first ten years of life. Using quantitative analyses and a combination of complementary tissue imaging approaches, including confocal microscopy and whole-slide imaging, we developed an integrated model for endocrine cell formation and islet architecture, including endocrine cell type heterogeneity and abundance, endocrine cell proliferation, and islet vascularization and innervation.
View Article and Find Full Text PDFPathophysiological characterization of the ApoE mouse: A model of diabetes and atherosclerosis.
Methods
January 2025
Translational Research On Renal and Cardiovascular Diseases (TRECARD), Department of Physiology and Pharmacology, University of Salamanca, 37007 Salamanca, Spain; Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain. Electronic address:
The high prevalence of type 2 diabetes and atherosclerosis makes essential the availability of in vivo experimental models that accurately replicate the pathophysiological mechanisms of these diseases. Apolipoprotein E knockout mice (ApoE) have been used in atherosclerosis studies, and the db/db mice show hyperphagia and obesity. Mice harbouring both alterations (i.
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