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J Neuroimmunol ; 293: 39-44, 2016 Apr 15.
Article in English | MEDLINE | ID: mdl-27049560

ABSTRACT

Little is known regarding protein responses to syphilis infection in cerebrospinal fluid (CSF) of patients presenting with neurosyphilis. Protein and antibody arrays offer a new opportunity to gain insights into global protein expression profiles in these patients. Here we obtained CSF samples from 46 syphilis patients, 25 of which diagnosed as having central nervous system involvement based on clinical and laboratory findings. The CSF samples were then analyzed using a RayBioH L-Series 507 Antibody Array system designed to simultaneously analyze 507 specific cytokines. The results indicated that 41 molecules showed higher levels in patients with neurosyphilis in comparison with patients without neural involvement. For validation by single target ELISA, we selected five of them (MIP-1a, I-TAC/CXCL11, Urokinase plasminogen activator [uPA], and Oncostatin M) because they have previously been found to be involved in central nervous system (CNS) disorders. The ELISA tests confirmed that uPA levels were significantly higher in the CSF of neurosyphilis patients (109.1±7.88pg/ml) versus patients without CNS involvement (63.86±4.53pg/ml, p<0.0001). There was also a clear correlation between CSF uPA levels and CSF protein levels (p=0.0128) as well as CSF-VDRL titers (p=0.0074) used to diagnose neurosyphilis. No significant difference between the two groups of patients, however, was found in uPA levels in the serum, suggesting specific activation of the inflammatory system in the CNS but not the periphery in neurosyphilis patients. We conclude that measurements of uPA levels in CSF may be an additional parameter for diagnosing neurosyphilis.


Subject(s)
Cytokines/cerebrospinal fluid , Neurosyphilis/cerebrospinal fluid , Urokinase-Type Plasminogen Activator/cerebrospinal fluid , Adult , Aged , Aged, 80 and over , Antibodies/blood , Antibodies/cerebrospinal fluid , Central Nervous System/pathology , Enzyme-Linked Immunosorbent Assay , Female , Humans , Male , Middle Aged , Neurosyphilis/pathology , Protein Array Analysis , Retrospective Studies , Urokinase-Type Plasminogen Activator/immunology
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