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==Overview==
When food intake ceases, the body enters the [[starvation response]]. Initially, the body's [[glycogen]] stores are used up in about 24 hours. The level of [[insulin]] in circulation is low and the level of [[glucagon]] is very high. The main means of energy production is [[lipolysis]]. [[Gluconeogenesis]] converts [[glycerol]] into glucose and the [[Cori cycle]] converts lactate into usable glucose.  Two systems of energy enter the gluconeogenesis: [[proteolysis]] provides [[alanine]] and [[lactic acid|lactate]] produced from [[pyruvate]], while acetyl CoA produces dissolved nutrients ([[Ketone bodies]]), which can be detected in [[urine]] and are used by the brain as a source of energy.
In terms of insulin resistance, starvation conditions make more glucose available to the brain.
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Latest revision as of 17:55, 12 February 2013

Starvation Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Differentiating Starvation from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Starvation pathophysiology On the Web

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Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Starvation pathophysiology

CDC on Starvation pathophysiology

Starvation pathophysiology in the news

Blogs on Starvation pathophysiology

Directions to Hospitals Treating Starvation

Risk calculators and risk factors for Starvation pathophysiology

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

When food intake ceases, the body enters the starvation response. Initially, the body's glycogen stores are used up in about 24 hours. The level of insulin in circulation is low and the level of glucagon is very high. The main means of energy production is lipolysis. Gluconeogenesis converts glycerol into glucose and the Cori cycle converts lactate into usable glucose. Two systems of energy enter the gluconeogenesis: proteolysis provides alanine and lactate produced from pyruvate, while acetyl CoA produces dissolved nutrients (Ketone bodies), which can be detected in urine and are used by the brain as a source of energy. In terms of insulin resistance, starvation conditions make more glucose available to the brain.

References


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