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. 1984 Oct;58(1):116–126.

Interferon production by cultured peripheral leucocytes of MS patients.

G Vervliet, H Carton, E Meulepas, A Billiau
PMCID: PMC1576981  PMID: 6206970

Abstract

Peripheral blood leucocytes from multiple sclerosis (MS) patients and from normal individuals were tested for their interferon (IFN) producing capacity after stimulation in vitro with various lectins and viruses. The lectins, Con A, PHA and PWM, induced IFN-gamma. In a kinetic study, the response to Con A revealed itself as an all or none event: the number of responding cultures increased with increasing mitogen dose, but the IFN yield in responding cultures did not differ significantly between dose levels. Thus, any patient or donor could easily be rated as a responder or non-responder. About 1/2 of the MS patients were found to be non-responders if Con A or PHA were used as stimuli. Ninety per cent of the normal donors on the other hand were responders. With PWM as a stimulus 100% of both the MS patients and normal donor groups were found to be responders. Also, with PWM very small doses were sufficient to obtain a 100% response rate among tested cultures, and IFN production persisted for 5 days, while with Con A or PHA it was arrested after 2-3 days. The results indicate that the MS associated lesion is not the absence of functional impairment of all IFN-gamma producing cells, but in only a fraction of them or in an accessory cell population required for the response to Con A and PHA but not to PWM. Newcastle disease virus (NDV) and vesicular stomatitis virus (VSV) both induced IFN-alpha. With NDV as the inducer response rates were 100% and yields were high irrespective of whether the cells were derived from patients or control donors. In contrast, with VSV as the inducer lower response rates were found in cultures from MS patients than in those from controls.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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