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Eur J Clin Microbiol Infect Dis. 2018 Oct;37(10):1983-1991. doi: 10.1007/s10096-018-3334-3. Epub 2018 Aug 6.

The chemokine CXCL13 in cerebrospinal fluid in children with Lyme neuroborreliosis.

Author information

1
Clinical Microbiology, Division of Laboratory Medicine, Region Jönköping County, Sweden.
2
Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
3
School of Medical Sciences, Örebro University, Örebro, Sweden.
4
Department of Clinical Chemistry and Transfusion Medicine Kalmar County Council, Linköping University, Linköping, Sweden.
5
Department of Pediatrics, Falun General Hospital, Falun, Sweden. barbro.hedinskogman@ltdalarna.se.
6
Center for Clinical Research (CKF) Dalarna, Uppsala University, Falun, Sweden. barbro.hedinskogman@ltdalarna.se.

Abstract

Anti-Borrelia antibodies in the cerebrospinal fluid (CSF) are required for definite diagnosis of Lyme neuroborreliosis (LNB). However, children often present with early LNB, and antibody production in the CSF may not be demonstrated. Recent studies have suggested the chemokine CXCL13 to be an early marker for LNB. The aim of the study was to evaluate CXCL13 for laboratory diagnosis in pediatric LNB patients and to evaluate the association with pleocytosis in CSF, clinical features, and recovery. CSF samples were collected from LNB patients, classified as definite LNB (n = 44) or possible LNB (n = 22), and controls classified as non-LNB (n = 102) or other specific diagnoses (n = 23). CSF samples were analyzed with the recomBead CXCL13 assay (Mikrogen Diagnostik, Germany), cut-off 160 pg/mL. CXCL13 was significantly higher in LNB patients compared to controls (p < 0.001). Among LNB patients, 58/66 had elevated CXCL13, and among controls, 111/125 had CXCL13 levels under cut-off (sensitivity 88%, specificity 89%). In LNB patients with pleocytosis but no detectable anti-Borrelia antibodies in CSF (possible LNB), CXCL13 was elevated in 16/22 (73%). A weak correlation between CXCL13 and pleocytosis in CSF was found in LNB patients (Rho = 0.46, p < 0.01), but no differences in CXCL13 levels in relation to specific clinical features. In conclusion, CXCL13 is elevated in CSF in children with LNB, showing acceptable sensitivity and specificity. In patients with possible LNB, CXCL13 was elevated in a majority of cases (73%) and is suggested as a complementary diagnostic tool in pediatric LNB patients. CXCL13 was not associated with specific clinical features or recovery.

KEYWORDS:

CXCL13; Cerebrospinal fluid; Chemokine; Children; Diagnostic test; Lyme neuroborreliosis

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