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Related Concept Videos

Mitochondrial Membranes01:45

Mitochondrial Membranes

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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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Mitochondria01:37

Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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The Inner Mitochondrial Membrane01:28

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The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
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Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
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Electron Transport Chain: Complex I and II01:46

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Does photobiomodulation alter mitochondrial dynamics?

Larissa Alexsandra da Silva Neto Trajano1,2, Priscyanne Barreto Siqueira1, Mariana Moreno de Sousa Rodrigues1

  • 1Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcântara Gomes, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.

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Summary
This summary is machine-generated.

Photobiomodulation (PBM) using low-power lasers (LPL) and light-emitting diodes (LED) shows therapeutic potential for diseases linked to mitochondrial dysfunction. PBM may improve health by targeting mitochondrial dynamics in conditions like neurodegenerative and metabolic disorders.

Keywords:
LEDfissionfusionlasermitochondrial dynamicsphotobiomodulation

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Area of Science:

  • Mitochondrial dynamics and cellular energy metabolism.
  • Photobiomodulation (PBM) therapy and its cellular effects.
  • Neurodegenerative and metabolic disease mechanisms.

Background:

  • Mitochondrial dysfunction is a key factor in various diseases, impairing energy production and increasing oxidative stress.
  • This dysfunction is implicated in neurodegenerative conditions (Parkinson's, Alzheimer's) and metabolic disorders (obesity, type 2 diabetes).
  • Photobiomodulation (PBM), using low-energy light, offers a non-thermal therapeutic approach with potential cellular benefits.

Purpose of the Study:

  • To review the role of mitochondrial dynamics in disease development.
  • To evaluate the therapeutic potential of low-power lasers (LPL) and light-emitting diodes (LED) in PBM for these conditions.
  • To explore PBM's effects on mitochondrial dynamics across various disease models.

Main Methods:

  • Literature review focusing on studies investigating mitochondrial dynamics and PBM.
  • Analysis of research on LPL and LED applications in cellular and in vivo models.
  • Examination of PBM's impact on mitochondrial function in disease contexts.

Main Results:

  • Mitochondrial dysfunction is strongly correlated with neurodegenerative diseases and metabolic disorders.
  • PBM effects on mitochondrial dynamics have been demonstrated in human fibroblast cell lines and in vivo models.
  • Observed benefits include improvements in models of brain injury, diabetes, spinal cord injury, Alzheimer's disease, and skin injury.

Conclusions:

  • Targeting mitochondrial dynamics represents a clinically relevant therapeutic strategy.
  • LPL and LED-based PBM show promise as effective therapies for improving health in cases of mitochondrial dysfunction.
  • Further research into PBM for mitochondrial dynamics-related diseases is warranted.