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Related Concept Videos

Hormones Regulating Blood Glucose01:16

Hormones Regulating Blood Glucose

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Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
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Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

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Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
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Glucose Homeostasis: Regulation of Blood Glucose01:02

Glucose Homeostasis: Regulation of Blood Glucose

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Carbohydrates consumed through foods are converted into glucose, a crucial energy source for the body. In the prandial state, high blood glucose levels stimulate the secretion of insulin from the pancreas. Insulin inhibits hepatic glucose production and stimulates glucose uptake and metabolism by muscle and adipose tissue. The excess glucose is converted into glycogen and stored in the liver and muscles.
During fasting, when blood glucose levels are low, the pancreas secretes glucagon. it...
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Regulation of Metabolism01:19

Regulation of Metabolism

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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GPCRs Regulate Adenylyl Cylase Activity01:09

GPCRs Regulate Adenylyl Cylase Activity

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Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
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Hormones of the Adrenal Glands01:31

Hormones of the Adrenal Glands

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Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
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Biochemical Reconstitution of Steroid Receptor•Hsp90 Protein Complexes and Reactivation of Ligand Binding
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How Do Glucocorticoids Regulate Lipid Metabolism?

Roldan M de Guia1, Stephan Herzig

  • 1Department of Molecular Metabolic Control, German Cancer Research Center, Center for Molecular Biology and University Hospital Heidelberg, Im Neuenheimer Feld 280, Heidelberg, 69120, Germany.

Advances in Experimental Medicine and Biology
|July 29, 2015
PubMed
Summary
This summary is machine-generated.

Glucocorticoids (GCs) and the glucocorticoid receptor (GR) regulate energy balance. Dysfunctional GC/GR signaling contributes to metabolic diseases like obesity and type 2 diabetes by impacting lipid homeostasis.

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Area of Science:

  • Endocrinology
  • Metabolism
  • Molecular Biology

Background:

  • Glucocorticoids (GCs) are key hormones regulating mammalian energy homeostasis.
  • Aberrant GC action is implicated in metabolic diseases such as obesity and type 2 diabetes.
  • The intracellular glucocorticoid receptor (GR) mediates GC effects as a transcription factor.

Purpose of the Study:

  • To review the current understanding of GC/GR roles in lipid metabolism.
  • To explore the implications of GC/GR function in systemic metabolic dysfunction.

Main Methods:

  • Focuses on reviewing existing literature on GC/GR signaling pathways.
  • Integrates knowledge of GR's transcriptional regulation of GC-responsive genes.
  • Highlights connections to lipid regulatory pathways and systemic lipid homeostasis.

Main Results:

  • GCs and GR are critical regulators of energy homeostasis.
  • GR acts as a nuclear transcription factor, influencing lipid regulatory genes.
  • GC/GR dysfunction is linked to impaired lipid handling and metabolic diseases.

Conclusions:

  • GC/GR signaling is central to maintaining physiological lipid homeostasis.
  • Understanding GC/GR's role in lipid metabolism is crucial for addressing metabolic diseases.
  • Further research into GC/GR pathways may reveal therapeutic targets for obesity and diabetes.