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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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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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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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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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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
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Mitochondrial Dysfunction in Depression.

Yashika Bansal, Anurag Kuhad1

  • 1Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences UGC-Centre of Advanced Study, Panjab University, Chandigarh - 160 014 India. anurag_pu@yahoo.com.

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Mitochondrial dysfunction is increasingly linked to depression. Enhancing mitochondrial function may offer new therapeutic strategies for treating this debilitating neuropsychiatric disorder.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Psychiatry

Background:

  • Depression is a major neuropsychiatric disorder with unclear pathophysiology.
  • Evidence links mitochondrial dysfunction in brain regions to depression.
  • Mitochondria are crucial for cellular processes including synaptic plasticity and resilience.

Purpose of the Study:

  • To provide a comprehensive overview of the role of mitochondrial dysfunction in depression.

Main Methods:

  • This is a review article, synthesizing existing literature.

Main Results:

  • Mitochondrial dysfunction contributes to the pathogenesis of depression.
  • Impaired mitochondrial function generates insults that worsen depression.

Conclusions:

  • Targeting mitochondrial dysfunction and enhancing mitochondrial function are potential therapeutic strategies for depression.
  • Further research into mitochondrial dysfunction in mood disorders, synaptic plasticity, and neurogenesis is warranted.