Glucose prolonged fasting

Avoid prolonged fasting. Glucose infusion during acute episode... 

Table 7.5 Arteriovenous differences of oxygen, glucose, fatty acids, acetoacetate and hydroxybutyrate across the brain of obese females during prolonged fasting...

B. During a prolonged fast, glucose can be synthesized from various precursors,... 

Which of the following organs or tissues does NOT need to be supplied with glucose for energy production during a prolonged fast ... 

Deficiency of which of the following enzymes would impair the body s ability to maintain blood glucose concentration during the first 24 hours of a prolonged fast ... 

FIGURE 23-28 Fuel metabolism in the liver during prolonged fasting or in uncontrolled diabetes mellitus. After depletion of stored carbohydrates, to proteins become an important source of glucose, produced from glucogenic amino acids by gluconeogenesis. ... 

The term ketone bodies refers primarily to two compounds acetoacetate and P-hydroxy-butyrate, which are formed from acetyl-CoA when the supply of TCA-cycle intermediates is low, such as in periods of prolonged fasting. They can substitute for glucose in skeletal muscle, and, to some extent, in the brain. The first step in ketone body formation is the condensation of two molecules of acetyl-CoA in a reverse of the thiolase reaction. 

Figure 32-4. Phases of glucose homeostasis in a normal human during a prolonged fast. Adapted from Ruderman et al. (1975).

C. Blood glucose levels during prolonged fasting (starvation)... 

Changes in fuel utilization by various tissues prevent blood glucose levels from decreasing abruptly during prolonged fasting. 

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