Related Experiment Video

Updated: May 25, 2025

Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility
07:54

Rapid and Refined CD11b Magnetic Isolation of Primary Microglia with Enhanced Purity and Versatility

Published on: April 13, 2017

9.7K

Roles of Microglia in Synaptogenesis, Synaptic Pruning, and Synaptic Plasticity in Physiological Conditions and

Meizhen Xie1, Tian Wang2, Jiachun Feng3

  • 1Cell Biology, Neurobiology and Biophysics, Department of Biology, Faculty of Science, Utrecht University, Utrecht 3584 CH, The Netherlands.

Current Neuropharmacology
|February 27, 2025
PubMed

Insights

Microglia, the brain's immune cells, are crucial for synapse health and function. Their roles in synapse formation, elimination, and plasticity are vital for learning, memory, and central nervous system (CNS) disorders.

Area of Science:

  • Neuroscience
  • Immunology
  • Cell Biology

Background:

  • Microglia are brain-resident immune cells traditionally known for immune surveillance and phagocytosis.
  • Emerging research highlights microglia's critical roles in regulating synapses, essential for neuronal communication, learning, and memory.
  • Synaptic plasticity, the basis of learning and memory, is dynamically modulated by microglia throughout life.

Purpose of the Study:

  • To summarize the physiological roles of microglia in synapse regulation.
  • To review the involvement of microglia in synaptic dysfunction across various central nervous system (CNS) disorders.
  • To explore potential therapeutic strategies targeting microglia-mediated synaptic changes in CNS diseases.

Main Methods:

  • Literature review and synthesis of existing research on microglia-synapse interactions.
  • Analysis of studies investigating microglia's functions in both healthy and diseased CNS conditions.
  • Examination of mechanisms underlying microglia's influence on synaptic plasticity and function.

Main Results:

  • Microglia actively promote synapse formation, maturation, and elimination via phagocytosis and effector molecule release.
  • Synaptic dysfunction and microglia activation are hallmarks of numerous CNS disorders, including Alzheimer's and Parkinson's disease.
  • Microglia exhibit heterogeneous functions in disease, potentially exacerbating or mitigating synaptic pathology.

Conclusions:

  • Microglia play multifaceted roles in maintaining synaptic health under physiological conditions.
  • Dysfunctional microglia contribute significantly to synaptic deficits observed in CNS disorders.
  • Targeting microglia-mediated synaptic regulation offers promising therapeutic avenues for treating neurological diseases.
Keywords:
Alzheimer’s diseaseParkinson’s diseaseischemic stroke.microgliasynapsesynaptic plasticitysynaptogenesistranscriptomic

More Related Videos

Culturing Microglia from the Neonatal and Adult Central Nervous System11:28

Culturing Microglia from the Neonatal and Adult Central Nervous System

Published on: August 9, 2013

27.9K
Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates09:12

Isolation of Cortical Microglia with Preserved Immunophenotype and Functionality From Murine Neonates

Published on: January 30, 2014

15.8K

Related Concept Videos

Glial Cells01:04

Glial Cells

Overview
86.1K
Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
267
Nervous Tissue: Glial Cells01:31

Nervous Tissue: Glial Cells

Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial...
2.5K
Integration of Synaptic Events01:28

Integration of Synaptic Events

Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability...
1.4K
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
696
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
 Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
379