PMID: 1179877Jul 1, 1975Paper

[Changes in affinity to mucoprotein receptors of influenza A2-strains after mouse adaptation (author's transl)].

Zentralblatt Für Bakteriologie, Parasitenkunde, Infektionskrankheiten Und Hygiene. Erste Abteilung Originale. Reihe A: Medizinische Mikrobiologie Und Parasitologie
H J Gerth

Abstract

The aim of the study was to establish the relationship between mouse-virulence and affinity of influenza A2-viruses to certain naturally occurring mucoprotein receptor substances. Mouse adaptation of 4 egg adapted cloned H2N2-strains, sensitive to RDE-resistant horse serum inhibitor (PSI), and RDE-sensitive chick serum inhibitor (HSI) in the haemagglutination inhibition and neutralisation test (E+-strains) resulted in mouse virulent strains with diminished PSI-sensitivity (M+-strains, (Table 2). Sensitivity to HSI and to the RDE sensitive fraction of PSI was comparatively less affected (Tables 3, 4). In contrast to the original egg-adapted strains there were only minor differences in inhibitor sensitivity between different M+-strains (Tables 2, 3). 4 mouse virulent strains, derived from 3 egg-adapted strains resistant to PSI and HSI (E--strains), either remained unchanged (2) or gained inhibitor sensitivity (2), (Tables 2, 3). Mouse adapted strains resistant to HSI and PSI could also be selected from M+-strains by passage with PSI in embryonated eggs. In general, properties related to mucoprotein affinity of these strains correspond to those of M--strains derived from E--strains. During selection of M--strains by passage with P...Continue Reading

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