Neural pathways that control the glucose counterregulatory response

Glucose is an essential metabolic substrate for all bodily tissues. The brain depends particularly on a constant supply of glucose to satisfy its energy demands. Fortunately, a complex physiological system has evolved to keep blood glucose at a constant level. The consequences of poor glucose homeos...

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Bibliographic Details
Published in:Frontiers in neuroscience 2014, Vol.8, p.38-38
Main Authors: Verberne, Anthony J M, Sabetghadam, Azadeh, Korim, Willian S
Format: Article
Language:English
Subjects:
adrenaline
Arcuate nucleus
Cardiovascular diseases
Chemoreception
Coma
Convulsions
Cortisol
Diabetes
Diabetes mellitus
Diabetic neuropathy
Epinephrine
Glucagon
Glucose
glucose sensing
Growth hormones
Hindbrain
Homeostasis
Hyperglycemia
Hyperoxia
Hypoglycemia
Hypothalamus (lateral)
Hypothalamus (ventromedial)
Insulin
Kinases
Mammals
Menopause
Nephropathy
Nervous system
Neurology
Pancreas
rostral ventrolateral medulla
Secretion
Sensors
Veins & arteries
ventromedial hypothalamus
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Summary:Glucose is an essential metabolic substrate for all bodily tissues. The brain depends particularly on a constant supply of glucose to satisfy its energy demands. Fortunately, a complex physiological system has evolved to keep blood glucose at a constant level. The consequences of poor glucose homeostasis are well-known: hyperglycemia associated with uncontrolled diabetes can lead to cardiovascular disease, neuropathy and nephropathy, while hypoglycemia can lead to convulsions, loss of consciousness, coma, and even death. The glucose counterregulatory response involves detection of declining plasma glucose levels and secretion of several hormones including glucagon, adrenaline, cortisol, and growth hormone (GH) to orchestrate the recovery from hypoglycemia. Low blood glucose leads to a low brain glucose level that is detected by glucose-sensing neurons located in several brain regions such as the ventromedial hypothalamus, the perifornical region of the lateral hypothalamus, the arcuate nucleus (ARC), and in several hindbrain regions. This review will describe the importance of the glucose counterregulatory system and what is known of the neurocircuitry that underpins it.
ISSN:1662-4548
1662-453X
1662-453X
DOI:10.3389/fnins.2014.00038