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Intrathecal antitreponemal antibody synthesis determination using the INNO-LIA Syphilis Score.
V Kotnik1, K Jordan, S Stopinsek
1Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia. vladimir.kotnik@mf.uni-lj.si
Acta Dermatovenerologica Alpina, Pannonica, Et Adriatica
|January 22, 2008
Summary
Detecting syphilis in the central nervous system (CNS) is challenging. A new molecular test, INNO-LIA Syphilis Score, shows promise in identifying specific antibodies in cerebrospinal fluid (CSF), aiding neurosyphilis diagnosis.
Area of Science:
- Neurology
- Infectious Diseases
- Immunology
Background:
- Intrathecal antibody synthesis in syphilis diagnosis is challenging.
- Traditional serology often fails to detect central nervous system (CNS) involvement.
- Molecular methods offer improved laboratory testing for neurosyphilis.
Purpose of the Study:
- To evaluate the INNO-LIA Syphilis Score, a novel molecular test, for detecting specific antitreponemal antibodies in cerebrospinal fluid (CSF).
- To assess the test's utility in diagnosing tertiary syphilis with potential neurological complications.
Main Methods:
- Tested 26 patients with suspected late syphilis neurological complications.
- Utilized conventional immunological tests (VDRL-RPR, TPHA, FTA-ABS IgG/IgM) and the INNO-LIA Syphilis Score.
- Performed all tests simultaneously on serum and CSF samples.
Main Results:
- All 26 serum samples were positive for anticardiolipin and antitreponemal antibodies.
- 17 out of 26 CSF samples tested positive using the INNO-LIA test (LIA-L).
- Laboratory signs of neurosyphilis were identified in two patients.
Conclusions:
- The INNO-LIA Syphilis Score aids in identifying patients with silent neurosyphilis.
- The test assists in detecting active intrathecal synthesis of IgG antibodies.
- New CSF tests are valuable for diagnosing CNS involvement in syphilis.
