J 2020

Cerebrospinal fluid oligoclonal IgM test in routine practice: Comparison with quantitative assessment of intrathecal IgM synthesis

ZEMAN, D., P. KUSNIEROVA, F. VSIANSKY, K. REGULIOVA, M. SKUTOVA et. al.

Základní údaje

Originální název

Cerebrospinal fluid oligoclonal IgM test in routine practice: Comparison with quantitative assessment of intrathecal IgM synthesis

Autoři

ZEMAN, D., P. KUSNIEROVA, F. VSIANSKY, K. REGULIOVA, M. SKUTOVA, I. WOZNICOVA, O. ZAPLETALOVA a P. HRADILEK

Vydání

Clinica Chimica Acta, AMSTERDAM, ELSEVIER SCIENCE BV, 2020, 0009-8981

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30230 Other clinical medicine subjects

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.786

UT WoS

000549228300021

Klíčová slova česky

Oligoclonal IgM; Cerebrospinal fluid; Intrathecal synthesis; Multiple sclerosis

Klíčová slova anglicky

Oligoclonal IgM; Cerebrospinal fluid; Intrathecal synthesis; Multiple sclerosis
Změněno: 7. 12. 2021 13:00, Bc. Hana Vladíková, BBA

Anotace

V originále

Background: Intrathecal IgM synthesis demonstrated either as cerebrospinal fluid (CSF)-restricted oligoclonal (o-) IgM bands or calculated using various formulas has been linked to more aggressive multiple sclerosis (MS) course. However, the proportion of MS patients showing intrathecal IgM synthesis varies largely between studies. We aimed to explore the relation between different formulas and results of o-IgM, and to assess the frequency of o-IgM bands in an unselected series of samples. Methods: 432 samples were analyzed for o-IgM, o-IgG and quantitative measures of IgM and IgG synthesis. IgM index and formulas of Reiber, Auer and Ohman were compared to the result of the o-IgM test. Results: At the cut-off commonly used, the non-linear formulas for intrathecal synthesis were specific (> 94%) but rather insensitive (< 40% even at a cut-off of 4 CSF-restricted bands) compared to o-IgM. No significant difference was noted in the performance of different formulas. At a cut-off of 4 bands, 61% of MS patients, but none of the controls were positive for o-IgM. Conclusions: Formulas for intrathecal IgM synthesis are insensitive compared to o-IgM. We propose to evaluate samples with 2 or 3 extra-CSF IgM bands as borderline and only samples with 4 or more as definitely positive.

Návaznosti

90128, velká výzkumná infrastruktura
Název: CZECRIN III