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Myelin basic protein and S-100 antigen in cerebrospinal fluid of patients with multiple sclerosis in the acute phase

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Abstract

It has previously been demonstrated that both Myelin Basic Protein (MBP) and S-100 are released in the cerebrospinal fluid (CSF) of multiple sclerosis (MS) patients during acute phases of exacebation of the disease. In order to investigate the pathobiological significance of the release of these two proteins into the CSF, MBP and S-100 were assayed in 10 MS patients during the five weeks following onset of an acute exacerbation. MBP was detectable in CSF during the first three weeks after exacrebation, while S-100 was detectable during the entire period of observation, at least in some of the patients. MBP reached its highest CSF concentrations during the first two weeks while S-100 did so in the third week, decreasing thereafter. This difference in time of presence of MBP and S-100 in the CSF is probably due to the different biological origin, MBP being a marker of myelin sheath injury, and S-100, more probably, of astrocytic activity.

Sommario

È stato precedentemente dimostrato che sia la proteina basica della mielina (PBM) che la S-100 vengono liberate nel liquido cefalo-rachidiano (LCR) durante in periodi di esacerbazione della sclerosi multipla (SM). Al fine di approfondire ulteriormente il significato patobiologico della liberazione di queste due proteine nel LCR abbiamo eseguito uno studio quantitativo di PBM e S-100 in dieci malati di SM durante un periodo di 5 settimane successive ad una ricaduta. La PBM è risultata dosabile durante le prime tre settimane, mentre la S-100 è risultata essere presente nel LCR durante l'intero periodo di osservazione, almeno in alcuni dei pazienti. La PBM ha raggiunto i suoi maggiroi livelli durante le prime due settimane. La S-100, invece, durante la terza settimana, dopo di che vi è stata una netta riduzione dei suoi livelli liquorali. Questa differenza nei tempi di presenza di PBM ed S-100 nel LCR è probabilmente dovuta alla differente origine biological delle due proteine. La PBM, infatti, è marcatrice di lesione della guaina mielinica, la S-100 invece, con più probabilità, di attività dellule astrocitarie.

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Massaro, A.R., Michetti, F., Laudisio, A. et al. Myelin basic protein and S-100 antigen in cerebrospinal fluid of patients with multiple sclerosis in the acute phase. Ital J Neuro Sci 6, 53–56 (1985). https://doi.org/10.1007/BF02229218

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