Influence of elemental impurities in aluminum hydroxide adjuvant on the stability of inactivated Japanese Encephalitis vaccine, IXIARO®.

Abstract:

:Aluminum hydroxide is a critical raw material in the production of many vaccines. It is used as an adjuvant in the formulation of the final bulk vaccine, and for this it must meet the specifications of the European Pharmacopeia Monograph. We investigated whether vaccine stability was affected by the presence of trace amounts of elemental impurities in commercially available aluminum hydroxide. The content of residual elemental impurities in commercially available aluminum hydroxide was determined by selective and sensitive inductively coupled-plasma mass spectrometry and inductively coupled plasma atomic emission spectroscopy. We found significant differences between different suppliers, but also between different lots from the same supplier. Inactivated Japanese encephalitis vaccine, IXIARO(®), was used to study the effect of residual metals in aluminum hydroxide on antigen stability. We propose that antigen degradation occurred via a pathway involving the metal-catalyzed, auto-oxidation of a process-related impurity (sulfite). Thus, sulfite auto-oxidation resulted in antigen degradation when residual Cu was present at elevated concentrations in aluminum hydroxide.

journal_name

Vaccine

journal_title

Vaccine

authors

Schlegl R,Weber M,Wruss J,Low D,Queen K,Stilwell S,Lindblad EB,Möhlen M

doi

10.1016/j.vaccine.2015.05.103

subject

Has Abstract

pub_date

2015-11-04 00:00:00

pages

5989-96

issue

44

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(15)00788-4

journal_volume

33

pub_type

杂志文章

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