Dexamethasone Insulin Prolactin

Dexamethasone, insulin, and prolactin are signaling molecules used to study how hormones regulate metabolism, gene expression, and cell behavior. Dexamethasone, a synthetic glucocorticoid, enters cells and binds intracellular glucocorticoid receptors to alter transcription; insulin activates a receptor tyrosine kinase and downstream signaling pathways, while prolactin binds its cell-surface receptor to stimulate JAK-STAT signaling. Together, these agents help researchers examine interactions between stress, metabolic, and reproductive hormone pathways in biological systems. Their use in cell culture and experimental models supports research on endocrine regulation, tissue differentiation, metabolic control, and hormone-responsive disease mechanisms.

Dexamethasone Insulin Prolactin - Related Videos

Research

JoVE Journal - Biology

Insulin Injection and Hemolymph Extraction to Measure Insulin Sensitivity in Adult Drosophila melanogaster

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Cited by 16 •

2011

Conserved insulin signaling pathways found in the fruit fly Drosophila melanogaster make this organism a potential tool for modeling metabolic disorders including type II diabetes. To this end, it is critical to establish physiological assays to effectively measure systemic insulin action in peripheral glucose disposal in the adult fly.

Research

JoVE Journal - Medicine
Free Sample

Improving IV Insulin Administration in a Community Hospital

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Cited by 7 •

2012

When compared to the previous paper protocol, implementation of a computerized glucose management system results in a substantial increase in blood glucose concentration measurements within the target range. Using a computerized glucose management system to monitor blood glucose levels, decreases in severe hypoglycemia (<40 mg/dL), clinical hypoglycemia (<70 mg/dL), and hyperglycemia (>180 mg/dL) also can be observed.

Research

JoVE Journal - Biology
Free Sample

A Quantitative Assay for Insulin-expressing Colony-forming Progenitors

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Cited by 11 •

2011

A three-dimensional clonogenic assay that allows pancreatic-like progenitors to differentiate into insulin-expressing colonies is described. This method takes advantage of semi-solid media containing methylcellulose, Matrigel and growth factors, in which single progenitors proliferate and differentiate in vitro, permitting quantification of the number of functional progenitors in a population.

Education

JoVE Core - Cell Biology

Insulin Secretory Vesicles

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2023

Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...

Glucose-Stimulated Insulin Secretion via Perfusion through the Mice Vasculature with an Intact Pancreas

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2025

Here, we provide details on performing glucose-stimulated insulin secretion (GSIS) via perfusion through the mice vasculature with an intact pancreas as an additional technique to assess the endocrine pancreatic function with reduction of possible confounders.

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