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Other Glycolytic Pathways

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The pentose phosphate pathway (PPP) operates in parallel with glycolysis, facilitating the metabolism of both pentoses and glucose. This pathway consists of two distinct phases: the oxidative and non-oxidative phases. While it does not directly generate ATP, the intermediates formed during the process can integrate into glycolysis, contributing to cellular energy metabolism when required.Oxidative Phase: NADPH ProductionThe oxidative phase of the pentose phosphate pathway is primarily...
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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
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The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities.
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Metabolism encompasses all biochemical reactions in a living organism, facilitating both the breakdown and synthesis of biomolecules. These metabolic processes are categorized into catabolic and anabolic pathways, which operate in a coordinated manner to ensure energy balance and cellular function.Catabolic Pathways and Energy ReleaseCatabolic pathways involve the breakdown of complex macromolecules such as carbohydrates, lipids, and proteins into smaller structures like monosaccharides, fatty...
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Author Spotlight: Advances in Brain Energy Metabolism Research Using the Drosophila Model
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Neuronal metabolism: Surprisingly flexible.

Andrés Köhler-Solís1, Stefanie Schirmeier1

  • 1Department of Biology, Technische Universität Dresden, 01217 Dresden, Germany.

Current Biology : CB
|November 18, 2025
PubMed
Summary

Neurons can significantly rearrange their metabolism, challenging the idea that metabolic issues always harm neuronal function and lead to neurodegeneration. This metabolic flexibility offers new insights into brain health.

Area of Science:

  • Neuroscience
  • Cellular Metabolism
  • Neurobiology

Background:

  • Neuronal function relies on efficient energy metabolism.
  • Metabolic disruptions are traditionally linked to neuronal dysfunction and neurodegeneration.

Purpose of the Study:

  • To investigate the adaptability of neuronal metabolism.
  • To determine if neurons can undergo significant metabolic rearrangement despite perturbations.

Main Methods:

  • The study employed advanced metabolic profiling techniques.
  • Investigated neuronal responses to specific metabolic challenges.

Main Results:

  • Neurons demonstrated a remarkable capacity for substantial metabolic rearrangement.
  • Metabolic perturbations did not invariably lead to detrimental effects on neuronal function.

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Conclusions:

  • Neuronal metabolic flexibility is greater than previously assumed.
  • This adaptability may play a crucial role in maintaining neuronal health under stress.