Effect of different inactivants and preservatives on the stability of ۱۴۶S fraction of foot-and-mouth diseases virus

Foot-and-mouth disease virus (FMDV) cripples livestock by imparting devastating effects to economy. A good vaccine is the key to stopping it, but due to instability of ۱۴۶S of FMDV, it is becoming difficult. This is bad because only ۱۴۶S can fight against disease and its dissociation ultimately leads to decreased potency of vaccine. This study aimed to preserve the integrity of ۱۴۶S in vaccine using different inactivators and preservatives. Foot-and-mouth Disease virus type ‘O’ was propagated on baby hamster kidney ۲۱ cell lines and inactivated using formalin or binary ethylenimine (BEI). Size exclusion high performance liquid chromatography analysis revealed minimal ۱۴۶S loss after double inactivation with formalin and BEI. This inactivated virus was further formulated into oil-based vaccine with sodium thiomersal or chloroform as a preservative. Our findings demonstrated that chloroform outperformed thiomersal in maintaining shelf life of vaccine. This claims that the combined approach of double inactivation with formalin and BEI followed by chloroform as preservative offered a promising strategy for developing efficacious FMDV.

کلیدواژه ها:

Chloroform ، Ethyleneimine ، formalin ، HPLC ، Sodium thiomersal