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2. Gluconeogenesis - Wikipedia

   en.wikipedia.org/wiki/Gluconeogenesis

   [3] [11] In nonruminants, including human beings, propionate arises from the β-oxidation of odd-chain and branched-chain fatty acids, and is a (relatively minor) substrate for gluconeogenesis. [12] [13] Lactate is transported back to the liver where it is converted into pyruvate by the Cori cycle using the enzyme lactate dehydrogenase.

3. Fructolysis - Wikipedia

   en.wikipedia.org/wiki/Fructolysis

   Under one percent of ingested fructose is directly converted to plasma triglyceride. [1] 29% - 54% of fructose is converted in liver to glucose, and about a quarter of fructose is converted to lactate. 15% - 18% is converted to glycogen. [2] Glucose and lactate are then used normally as energy to fuel cells all over the body. [1]

4. Fatty acid metabolism - Wikipedia

   en.wikipedia.org/wiki/Fatty_acid_metabolism

   [20] [22] [23] D-lactate metabolism (to glucose) is slow or impaired in humans, so most of the D-lactate is excreted in the urine; thus D-lactate derived from acetone can contribute significantly to the metabolic acidosis associated with ketosis or isopropanol intoxication. [20] L-Lactate can complete the net conversion of fatty acids into ...

5. Glycolysis - Wikipedia

   en.wikipedia.org/wiki/Glycolysis

   This causes liver glycogen to be converted back to G6P, and then converted to glucose by the liver-specific enzyme glucose 6-phosphatase and released into the blood. Glucagon and epinephrine also stimulate gluconeogenesis, which converts non-carbohydrate substrates into G6P, which joins the G6P derived from glycogen, or substitutes for it when ...

6. Lipid metabolism - Wikipedia

   en.wikipedia.org/wiki/Lipid_metabolism

   Lipid metabolism is often considered the digestion and absorption process of dietary fat; however, there are two sources of fats that organisms can use to obtain energy: from consumed dietary fats and from stored fat. [5] Vertebrates (including humans) use both sources of fat to produce energy for organs such as the heart to function. [6]

7. Carbohydrate metabolism - Wikipedia

   en.wikipedia.org/wiki/Carbohydrate_metabolism

   Glucose-6-phosphate can then progress through glycolysis. [1] Glycolysis only requires the input of one molecule of ATP when the glucose originates in glycogen. [1] Alternatively, glucose-6-phosphate can be converted back into glucose in the liver and the kidneys, allowing it to raise blood glucose levels if necessary. [2]