Detection of borna disease virus-reactive antibodies from patients with psychiatric disorders and from horses by electrochemiluminescence immunoassay. — ME/CFS Atlas
E2 ModeratePreliminaryPEM not requiredCross-SectionalPeer-reviewedReviewed
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Detection of borna disease virus-reactive antibodies from patients with psychiatric disorders and from horses by electrochemiluminescence immunoassay.
Yamaguchi, K, Sawada, T, Naraki, T et al. · Clinical and diagnostic laboratory immunology · 1999 · DOI
Quick Summary
Researchers developed a new blood test to detect antibodies against Borna disease virus (BDV), a virus found in animals. They tested thousands of blood samples from people with various conditions, including psychiatric disorders, and found that people with schizophrenia and mood disorders had higher rates of BDV antibodies compared to healthy blood donors. However, people with chronic fatigue syndrome did not show elevated BDV antibodies in this study.
Why It Matters
This study is relevant to ME/CFS research because it specifically examined BDV seropositivity in chronic fatigue syndrome patients and found no elevation, contrasting with psychiatric conditions. The development of a more specific antibody detection method addresses longstanding questions about infectious triggers in post-viral fatigue syndromes. Understanding which conditions associate with persistent viral antibodies helps clarify whether BDV plays a role in ME/CFS pathogenesis.
Observed Findings
BDV-specific antibodies were found in 3.08% of schizophrenia patients and 3.59% of mood disorder patients, compared to 1.09% of blood donors
Only 1 of 75 chronic fatigue syndrome patients tested positive for BDV antibodies
Anti-p24 antibodies were more frequently detected than anti-p40 antibodies across most patient groups
Feral horses naturally infected with BDV showed antibody profiles similar to human seropositive controls
Serum samples positive for both p40 and p24 antibodies simultaneously were not found in the study cohort
Inferred Conclusions
BDV infection may be associated with certain psychiatric disorders, particularly schizophrenia and mood disorders, though the mechanism remains unclear
BDV does not appear to be significantly associated with chronic fatigue syndrome based on serological evidence
The differential antibody profiles (p40 vs p24) may have diagnostic or prognostic significance in psychiatric populations
The newly developed ECLIA provides a more reliable method for detecting BDV-specific antibodies than previously available assays
Remaining Questions
What is the functional significance of anti-BDV antibodies—do they indicate active infection, persistent infection, or merely prior exposure?
What This Study Does Not Prove
This study does not prove that BDV causes psychiatric disorders or ME/CFS, only that antibodies are somewhat more common in certain patient groups—antibodies may reflect past exposure rather than current infection or disease causation. The cross-sectional design cannot establish temporal relationships or distinguish between active infection and prior exposure. The lack of BDV detection in chronic fatigue syndrome patients does not exclude the possibility that BDV affects a subset of patients or that other related viruses may be involved.
Tags
Biomarker:AutoantibodiesBlood Biomarker
Method Flag:Exploratory OnlyMixed CohortWeak Case Definition
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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