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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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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.
ROS generation is regulated and maintained at moderate levels necessary...
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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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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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The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

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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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Energy to Drive Translocation01:37

Energy to Drive Translocation

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Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
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Author Spotlight: Decoding Mitochondrial Aging
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Current perspectives on mitochondrial dysfunction in migraine.

Shraman Kumar Bohra1, Raghu Ram Achar2, Saravana Babu Chidambaram3

  • 1Department of Life Sciences, Pooja Bhagavat Memorial Mahajana Education Center, Mysore, India.

The European Journal of Neuroscience
|April 28, 2022
PubMed
Summary

Mitochondrial dysfunction is increasingly linked to migraine pathophysiology. This review explores how mitochondrial DNA and nuclear DNA mutations, along with epigenetic factors, contribute to migraine development and discusses potential therapeutic supplements.

Keywords:
impairmentmetabolismmigrainemitochondrial dysfunctionmitochondrial genetics

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Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Mitochondria are vital organelles for cellular metabolism.
  • Migraine is a neurovascular disorder affecting millions globally, causing significant disability.
  • Mitochondrial dysfunction, including mutations and oxidative stress, is implicated in migraine.

Purpose of the Study:

  • To review the multifaceted role of mitochondrial dysfunction in migraine pathogenesis.
  • To explore the genetic underpinnings, including mtDNA and nuclear DNA mutations, contributing to migraine.
  • To discuss the potential of therapeutic supplements for migraine management.

Main Methods:

  • Literature review of studies on mitochondrial dysfunction and migraine.
  • Analysis of genetic factors, including mitochondrial DNA (mtDNA) polymorphisms and nuclear DNA mutations.
  • Examination of epigenetic influences on migraine pathophysiology.

Main Results:

  • Mitochondrial dysfunction, evidenced by higher mutation rates and altered biomarkers, is a significant factor in migraine.
  • Specific mtDNA polymorphisms and nuclear DNA mutations affecting mitochondrial protein synthesis are associated with migraine.
  • Comorbidities like MELAS, hemiplegic migraine, and TTH highlight the link between mitochondrial disorders and headache.

Conclusions:

  • Mitochondrial dysfunction is a key pathophysiological mechanism in migraine.
  • Genetic and epigenetic alterations impacting mitochondria play a crucial role in migraine development.
  • Therapeutic strategies targeting mitochondrial health show promise for migraine management.