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The effects of iodine on the biological activities of myxoviruses

Published online by Cambridge University Press:  15 May 2009

K. Apostolov
K. Apostolov
Affiliation:
Department of Virology, Royal Postgraduate Medical School, Hammersmith Hospital, London W12 0HS
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Lugol's solution destroys the biological activities of Newcastle disease virus (NDV) after 15 s incubation at 37 °C. The rates of inactivation are slower at lower temperatures and at acid pH. At 4 °C and pH 5·8, the functions associated with the virus membrane, (haemolysis (HL), cell fusion and infectivity) are inactivated within 32 min, while haemagglutination (HA) and neuraminidase (N) are resistant to inactivation for serval hours. Adjustment of NDV, Sendai and influenza A virus allantoic harvests to pH 5·8 and subsequent treatment with undiluted Lugol's solution (pH 5·8) for 15 min has a minimal effect on HA but results in complete loss of infectivity. It is suggested that iodination could be a useful method for vaccine production with membrane-bound viruses. It is postulated that the separation and dissociation of the membrane-associated properties of paramyxoviruses from the glycoprotein functions is due to the higher affinity of iodine for the lipids. Iodine could react with the carbon–carbon double bond (C=C) of the unsaturated fatty acids. This could lead to a change in the physical properties of the lipids and membrane immobilization.

Type
Research Article
Information
Journal of Hygiene , Volume 84 , Issue 3 , June 1980 , pp. 381 - 388
Copyright
Copyright © Cambridge University Press 1980

References

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