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Plasticity of bladder reflex pathways during postnatal development.

William C de Groat1

  • 1Department of Pharmacology, W1352 Biomedical Science Tower, 200 Lothrop Street, 15261, Pittsburgh, PA, USA. degroat@server.pharm.pitt.edu

Physiology & Behavior
|January 16, 2003
PubMed
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Postnatal maturation of voiding reflexes involves synaptic remodeling in the spinal cord. Alterations in glutamatergic transmission between neurons are key to this developmental plasticity in neonatal animals.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Physiology

Background:

  • Understanding the neural control of voiding reflexes is crucial for addressing bladder dysfunction.
  • Neonatal spinal cord circuitry undergoes significant development and plasticity.
  • Glutamatergic neurotransmission plays a vital role in synaptic communication within the central nervous system.

Purpose of the Study:

  • To investigate the neuroanatomical and electrophysiological mechanisms underlying the maturation of voiding reflexes in neonatal animals.
  • To elucidate the role of glutamatergic excitatory transmission in the developmental plasticity of sacral parasympathetic reflex pathways.

Main Methods:

  • Neuroanatomical techniques to map spinal cord circuitry.
  • Electrophysiological studies, including patch clamp analysis of unitary synaptic transmission.

Related Experiment Videos

  • Analysis of spinal cord slice preparations from neonatal animals.

    • Main Results:

    • Developmental plasticity in sacral parasympathetic reflex pathways is linked to changes in glutamatergic transmission.
    • Alterations in excitatory synaptic transmission occur between interneurons and parasympathetic preganglionic neurons.
    • Synaptic remodeling in the sacral parasympathetic nucleus was observed.

    Conclusions:

    • Synaptic remodeling in the sacral parasympathetic nucleus is a critical factor in the postnatal maturation of voiding reflexes.
    • Competition between segmental and supraspinal inputs may drive these synaptic changes.
    • Understanding these mechanisms can inform therapeutic strategies for bladder control disorders.