Abstract

Cytopathogenicity of HIV and other enveloped viruses is reduced by membrane fluidizing agents and by dextran sulphate (DS). To investigate whether DS exerts its antiviral action via plasma membrane fluidization of host cells, we performed anisotropy measurements on human peripheral blood lymphocytes (PBL) using the fluorescent marker diphenylhexatriene. Anisotropy was decreased in DS-exposed PBL indicating increased fluidity in the hydrophobic membrane interior.

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