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Related Experiment Video

Updated: Jan 30, 2026

Imaging Dendritic Spines in Caenorhabditis elegans
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Dendritic spines: Revisiting the physiological role.

Saravana Babu Chidambaram1, A G Rathipriya2, Srinivasa Rao Bolla3

  • 1Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research (JSSAHER), Mysuru, Karnataka 570015, India.

Progress in Neuro-Psychopharmacology & Biological Psychiatry
|January 18, 2019
PubMed
Summary
This summary is machine-generated.

Dendritic spines, crucial for synaptic plasticity, change shape and number during learning and memory. Their structural alterations are implicated in neurodegenerative diseases and may be targeted by nootropics.

Keywords:
Dendritic spine pathologyDendritic spinesNeurological diseasesSpine dynamicssynaptic plasticity

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Molecular Biology

Background:

  • Dendritic spines are specialized protrusions on neurons, essential for excitatory synapses.
  • They possess complex molecular structures regulated by signaling pathways, particularly small GTPases like Rho and Ras.
  • Spine morphology and dynamics are crucial for synaptic plasticity, learning, and memory.

Purpose of the Study:

  • To review dendritic spine morphogenesis and activity-dependent structural plasticity.
  • To elucidate mechanisms of synaptic activity in sculpting dendritic spines.
  • To discuss spine alterations in neurodegenerative diseases and the potential of therapeutic agents.

Main Methods:

  • Review of existing literature on dendritic spine structure, function, and plasticity.
  • Analysis of molecular signaling pathways (Rho, Ras GTPases) regulating spine dynamics.
  • Examination of structural changes during Long-Term Potentiation (LTP) and Long-Term Depression (LTD).

Main Results:

  • Synaptic activity dynamically regulates spine morphology, with LTP promoting enlargement and LTD causing shrinkage.
  • Spine density alterations are observed in neurological disorders, including autism, Fragile X syndrome, schizophrenia, and Alzheimer's disease.
  • Nootropics and neuroprotective agents show potential for restoring dendritic spine function.

Conclusions:

  • Dendritic spine structure and plasticity are fundamental to cognitive functions like learning and memory.
  • Dysregulation of dendritic spines is a hallmark of several neurodegenerative and psychiatric conditions.
  • Targeting dendritic spine mechanisms offers therapeutic avenues for neurological disorders.