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Related Experiment Videos

Triptans reduce the inflammatory response in bacterial meningitis.

Olaf Hoffmann1, Nikolas Keilwerth, Margarethe Bastholm Bille

  • 1Department of Neurology, University Hospital Charité, Humboldt University, Berlin, Germany.

Journal of Cerebral Blood Flow and Metabolism : Official Journal of the International Society of Cerebral Blood Flow and Metabolism
|August 13, 2002
PubMed
Summary

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Triptans, a class of drugs, show anti-inflammatory potential in bacterial meningitis models. They reduce inflammation, intracranial pressure, and improve survival, suggesting a new therapeutic approach for meningitis.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Infectious Diseases

Background:

  • Meningitis involves trigeminal nerve activation, causing severe headache and meningism.
  • Proinflammatory neuropeptides released from perivascular nerve fibers contribute to meningitis pathology.

Purpose of the Study:

  • To assess the anti-inflammatory potential of 5HT1B/D/F receptor agonists (triptans) in bacterial meningitis.
  • To investigate the role of meningeal nerve fibers in the inflammatory cascade of meningitis.

Main Methods:

  • Used rat and mouse models of pneumococcal meningitis.
  • Administered triptans (zolmitriptan, naratriptan) and receptor antagonists.
  • Measured leukocyte influx, cerebral blood flow, intracranial pressure, brain water content, neuropeptide levels (CGRP, substance P), survival, and clinical scores.

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Main Results:

  • Triptans reduced leukocyte influx, attenuated cerebral blood flow increase, and lowered intracranial pressure and brain water content in rats.
  • Triptans prevented the depletion of calcitonin gene-related peptide (CGRP) and substance P from meningeal nerve fibers.
  • Elevated CGRP levels were observed in cerebrospinal fluid of bacterial meningitis patients.
  • Triptan treatment improved survival and clinical scores in a mouse meningitis model.

Conclusions:

  • Meningeal nerve fibers contribute to the early inflammatory cascade in bacterial meningitis.
  • Triptans demonstrate anti-inflammatory effects and neuroprotective properties in meningitis models.
  • Adjunctive triptan therapy may offer a novel treatment strategy for acute bacterial meningitis.