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Related Concept Videos

Fates of Pyruvate01:20

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Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
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Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
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Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
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In aerobic organisms, the citric acid cycle is the second stage of cellular respiration wherein molecules derived from the breakdown of carbohydrates, proteins, and fats are oxidized into carbon dioxide and energy. This process is also known as the tricarboxylic acid (TCA) cycle as the first product of the cycle, citric acid, contains three carboxyl groups in its structure. Alternatively, this cycle is also referred to as the Krebs cycle, in honor of its discoverer Sir Hans Krebs.
The citric...
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Nearly all the energy used by cells comes from the bonds that make up complex organic compounds. These organic compounds are broken down into simpler molecules, such as glucose. As a result, cells extract energy from glucose over many chemical reactions—a process called cellular respiration.
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Related Experiment Video

Updated: Jun 12, 2025

Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer
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Assessment of Glutamine as a Fuel Source for Alveolar Macrophages Exposed to Chronic Ethanol Using an Extracellular Flux Bioanalyzer

Published on: November 15, 2024

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Current knowledge about pyruvate supplementation: A brief review.

Robert A Olek1, Sylwester Kujach2, Zsolt Radak3,4

  • 1Department of Athletics, Strength, and Conditioning, Poznan University of Physical Education, Poznan, Poland.

Sports Medicine and Health Science
|September 23, 2024
PubMed
Summary
This summary is machine-generated.

Pyruvate supplementation does not enhance athletic performance in active individuals after one week. Future research should investigate the timing of pyruvate intake for potential metabolic benefits.

Keywords:
AcidosisBicarbonateLactateNicotinamide adenine dinucleotideSirtuins

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Area of Science:

  • Biochemistry
  • Exercise Physiology
  • Nutritional Science

Background:

  • Pyruvate is a key intermediate in cellular energy metabolism, produced during glycolysis.
  • Exogenous pyruvate may influence acid-base balance and cellular redox state.
  • Early studies suggested ergogenic effects, but later research yielded mixed results.

Purpose of the Study:

  • To review the potential effects of pyruvate supplementation in physically active individuals.
  • To evaluate the current evidence regarding pyruvate's ergogenic and metabolic impacts.
  • To identify future research directions for pyruvate supplementation studies.

Main Methods:

  • Literature review of existing studies on pyruvate supplementation and exercise performance.
  • Analysis of data concerning pyruvate metabolism, antioxidant activity, and acid-base balance.
  • Synthesis of findings from controlled trials in physically active populations.

Main Results:

  • Well-controlled studies show no ergogenic effects of pyruvate supplementation beyond one week in active people.
  • Ingested pyruvate may be metabolized without significant blood accumulation.
  • Pyruvate demonstrates antioxidant properties and can modulate cellular redox state and blood acid-base balance.

Conclusions:

  • Current evidence does not support pyruvate supplementation for enhancing athletic performance in the short term.
  • Further investigation into the optimal timing of pyruvate intake is warranted.
  • Understanding pyruvate's metabolic and physiological effects requires more targeted research.