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
Štítky
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
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