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Detection of JC virus infection in progressive multifocal leukoencephalopathy: the first documented case in Thailand

Taweekiat Dujneungkunakorn1, Somnuek Sungkanuparph, Asda Vibhagool

  • 1Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand.

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|December 28, 2002
PubMed

Insights

Diagnosing Progressive Multifocal Leukoencephalopathy (PML) can now be aided by detecting JC virus (JCV) in cerebrospinal fluid (CSF) using PCR. This method may reduce the need for invasive brain biopsies in PML diagnosis.

Area of Science:

  • Neurovirology
  • Infectious Diseases
  • Neurology

Background:

  • Progressive Multifocal Leukoencephalopathy (PML) is a severe demyelinating disease caused by the JC virus (JCV).
  • PML significantly contributes to morbidity and mortality, particularly in immunocompromised individuals such as AIDS patients.
  • Current definitive diagnosis of PML typically necessitates an invasive brain biopsy.

Observation:

  • A case study involving a 36-year-old woman with a 2-month history of fever, progressive weakness, and speech difficulties.
  • Clinical presentation and Magnetic Resonance Imaging (MRI) findings were consistent with PML.
  • Cerebrospinal fluid (CSF) analysis using qualitative Polymerase Chain Reaction (PCR) for JCV yielded a positive result.

Findings:

  • Cerebrospinal fluid (CSF) PCR for JC virus (JCV) demonstrates high specificity in diagnosing PML.
  • The detection of JCV DNA in CSF is a valuable diagnostic marker for PML.
  • Positive PCR results in CSF can support a PML diagnosis, especially when clinical and radiological evidence is present.

Implications:

  • The use of PCR for JCV in CSF offers a less invasive diagnostic approach for PML.
  • This diagnostic strategy may decrease the reliance on brain biopsies for PML confirmation.
  • Early and accurate diagnosis of PML through CSF PCR can potentially lead to timely management and improved patient outcomes.

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