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Beta-2-transferrin and cerebrospinal fluid rhinorrhoea
V Nandapalan1, I D Watson, A C Swift
1Department of Otorhinolaryngology, Royal Liverpool University Hospital, UK.
Clinical Otolaryngology and Allied Sciences
|June 1, 1996
Summary
Detecting beta-2-transferrin in nasal fluid is a sensitive method for diagnosing cerebrospinal fluid (CSF) leaks. Its presence confirms a leak, while its absence helps rule out CSF leaks, avoiding invasive procedures.
Area of Science:
- Neurology
- Biochemistry
- Otolaryngology
Background:
- Beta-2-transferrin is a unique protein found in cerebrospinal fluid (CSF) and perilymph, absent in other bodily secretions.
- Its presence indicates a potential leak of CSF into other body cavities.
- Diagnosing CSF leaks, particularly CSF rhinorrhoea, is crucial for preventing complications like meningitis.
Purpose of the Study:
- To evaluate the diagnostic value of beta-2-transferrin detection in suspected cases of CSF rhinorrhoea.
- To assess the sensitivity and specificity of beta-2-transferrin testing compared to surgical confirmation and imaging.
Main Methods:
- Analysis of nasal fluid samples from 25 patients with suspected CSF rhinorrhoea.
- Detection of beta-2-transferrin using immuno-fixation electrophoresis.
- Correlation of test results with surgical findings, computerized tomography (CT) scans, and CT cisternography.
Main Results:
- Beta-2-transferrin was detected in 16 out of 25 patients.
- Of the 16 positive cases, 13 were confirmed to have a dural defect and CSF leak during surgery.
- In negative cases, further investigations like craniotomy and CT cisternography showed no evidence of CSF leak, indicating high specificity.
Conclusions:
- Beta-2-transferrin detection is a valuable and sensitive diagnostic tool for CSF leaks.
- A negative beta-2-transferrin test can help avoid unnecessary invasive investigations in patients with suspected CSF leaks.