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Related Experiment Videos

Increased nerve growth factor expression triggers bladder overactivity.

K Lamb1, G F Gebhart, K Bielefeldt

  • 1Department of Pharmacology, University of Iowa, Iowa City, USA.

The Journal of Pain
|April 24, 2004
PubMed
Summary
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Nerve growth factor (NGF) alone, without inflammation, can cause bladder overactivity by sensitizing nerves. Targeting NGF signaling may offer new treatments for related disorders.

Area of Science:

  • Urology
  • Neuroscience
  • Molecular Biology

Background:

  • Visceral inflammation, increased nerve growth factor (NGF), and hyperalgesia are linked.
  • The role of NGF alone in visceral sensitization requires further investigation.

Purpose of the Study:

  • To determine the effect of NGF in vivo without associated inflammation.
  • To investigate NGF's role in bladder overactivity using viral gene transfer.

Main Methods:

  • Replication-deficient adenoviral vectors encoding NGF or beta-galactosidase were injected into rat bladders.
  • NGF levels were measured using ELISA.
  • Bladder activity was assessed via cystometrograms in awake rats.

Main Results:

Related Experiment Videos

  • NGF gene transfer increased bladder NGF protein levels fourfold without causing inflammation.
  • NGF expression resulted in significant bladder overactivity.
  • Control virus (beta-galactosidase) had no effect.

    • Conclusions:

    • Transient increases in NGF expression can sensitize visceral pathways, leading to bladder overactivity independently of inflammation.
    • NGF is a potential therapeutic target for conditions involving peripheral nerve sensitization.