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Study identifier: NCT06510751 Synced from ClinicalTrials.gov · July 29, 2026
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Evaluation of the Levels of Calcitonin Gene-related Peptide and Substance P

Condition: Meningitis · Diagnosis · Prognosis  ·  Sponsor: Melike Cengiz

PhaseN/A
Planned participants51
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

In cases of meningitis caused by external ventricular catheters (EVDs), which are the most commonly placed intracranial catheters that can lead to central nervous system infection through contamination/colonisation, the diagnosis may not be differentiated by either clinical signs and symptoms or conventional cerebrospinal fluid (CSF) tests. Therefore, due to the limitations in diagnosis and prognostic prediction of EVD-induced meningitis and the high mortality/morbidity rates of the disease, markers with high sensitivity and specificity in post-operative meningitis are needed. Calcitonin gene-related peptide (CGRP), a neuropeptide, has been shown to increase when C or Aδ sensory fibres are damaged or in the presence of inflammation in tissues adjacent to the fibres. CGRP is localised in nociceptive nerve terminals together with another neuropeptide, substance P, which has similar biological effects. There are very few studies investigating how CGRP levels in CSF and serum change in bacterial meningitis. Although it is thought that nociception and neuroimmune interactions affect meningeal antibacterial host defence, that nociceptors signal via CGRP to meningeal immune cells during infection, and that this neuroimmune axis exacerbates bacterial meningitis by weakening host defence, it is not yet clear how CGRP and substance P levels affect disease prognosis. This study will evaluate the utility of CGRP and substance P levels as biomarkers to assess diagnosis and treatment respo…

This description comes directly from the study's public registry record.

Talk to the study team

Melike Cengiz, MD,Professor  ·  +902422496231  ·  melikecengiz@yahoo.com

Always discuss trial participation with your own doctor first.

Locations (1)

Akdeniz University School of Medicine, Department of Anesthesiology and Intensive Care, TurkeyAntalya, Turkey (Türkiye)Recruiting

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Source record: clinicaltrials.gov/study/NCT06510751