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Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
Depression: Overview01:18

Depression: Overview

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,...
Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over time, all...
Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.

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Network Pharmacology and Validation of the Antidepressant Mechanisms of Qiangzhifang in a Chronic Restraint Stress-induced Depression Rat Model
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MicroRNAs and depression.

Sophie Mouillet-Richard1, Anne Baudry, Jean-Marie Launay

  • 1Cellules souches, Signalisation et Prions, INSERM U747, Paris, France.

Neurobiology of Disease
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

MicroRNAs are implicated in the pathophysiology of depression and antidepressant action. This review explores their role in major depressive disorder (MDD), offering insights into novel therapeutic targets.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Psychiatry

Background:

  • Major Depressive Disorder (MDD) poses a significant public health challenge, affecting 15-17% of the population.
  • The pathophysiology of MDD remains incompletely understood, despite known links to synaptic plasticity deficits and chronic stress.
  • MicroRNAs are increasingly recognized for their crucial roles in central nervous system (CNS) function and disease.

Purpose of the Study:

  • To review the current evidence linking microRNAs to the pathophysiology of depression.
  • To explore the contribution of microRNAs to the mechanisms of antidepressant action.

Main Methods:

  • Literature review of studies investigating microRNAs in depression.
  • Analysis of research on microRNA involvement in synaptic plasticity and neuronal function.
  • Examination of data on microRNA modulation by antidepressants.

Main Results:

  • Evidence suggests microRNAs play a significant role in the molecular underpinnings of depressive states.
  • MicroRNAs are involved in regulating synaptic plasticity, a key factor in depression.
  • Antidepressant efficacy may be mediated, in part, through microRNA pathways.

Conclusions:

  • MicroRNAs represent a critical area of research for understanding MDD.
  • Targeting microRNAs may offer novel therapeutic strategies for depression.
  • Further investigation into microRNA-antidepressant interactions is warranted.