Informace o publikaci

Assessment of antibodies against surface and outer membrane proteins of Anaplasma phagocytophilum in Lyme borreliosis and tick-borne encephalitis paediatric patients

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KRBKOVÁ Lenka HOMOLA Lukáš BRAUNOVÁ Adriana MIKOLÁŠEK Peter BEDNÁŘOVÁ Jana ČERMÁKOVÁ Zdeňka

Rok publikování 2016
Druh Článek v odborném periodiku
Časopis / Zdroj Epidemiology and infection
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
Doi http://dx.doi.org/10.1017/S0950268816000972
Obor Epidemiologie, infekční nemoci a klinická imunologie
Klíčová slova Anaplasma phagocytophilum; human granulocytic anaplasmosis; Lyme borreliosis; major surface proteins; outer membrane protein A; tick-borne encephalitis
Popis To examine evidence of positive antibodies against immunogenic proteins of Anaplasma phagocytophilum in patients with other tick-borne infections and to diagnose possible co-infections, 412 serum specimens were tested by immunoblotting using three specific Anaplasma antigens: surface proteins p44 and Asp62 and outer membrane protein A (OmpA). In total, 284 serum samples from children with Lyme borreliosis and 12 serum samples from children with tick-borne encephalitis were tested. Sera from patients with viral aseptic meningitis (n = 47) and from blood donors (n = 69) were used as controls. Among all serum specimens from patients with tick-borne infections submitted for this study, six samples (20%) showed positive IgM reactions and seven samples (24%) were IgG positive for A. phagocytophilum by immunoblot. Borderline reactivity was found in 30 samples (1014%) for IgM and 36 samples (122%) for IgG. The difference between patients and blood donors was statistically significant for IgM (P = 0006) and for IgG (P = 00007) antibodies. A statistically significant result was obtained for IgG (P = 002) but not for IgM between patients and children with aseptic meningitis. Immunoblot using three specific antigens provides novel information about the positivity of antibodies to A. phagocytophilum in children with other tick-borne infections. Taking into account clinical and laboratory findings of children despite antibody positivity, no case of human granulocytic anaplasmosis was demonstrated.

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