Hyperimmunized horse anti-B virus globulin: preparation and effectiveness.

This research article focuses on the preparation of a potent anti-B virus hyperimmune globulin using horse serum and assessing its effectiveness in preventing or reducing the severity of the disease in rabbits.

Background

• The article introduces the problem of not having a fully satisfactory inactivated B virus vaccine. Previous attempts at this have produced inconsistent or less than optimal results.
• Considering the disease’s risk, especially for individuals working with monkeys and the success of gamma globulin treatment for several viruses, the researchers saw a need to explore this line of protective treatment.

Methodology

• To produce the hyperimmune anti-B virus horse serum, the researchers started by preparing a virus stock for animal injection. This was done using rabbit kidney cells cultured and fed with a solution containing Hanks’ balanced salt solution and 20% horse serum.
• The virus-infected cells and medium were gathered at peak infection and went through three freezing and thawing cycles to cause disruption. The final product was then centrifuged to remove any cellular debris, leaving a clear supernatant fluid with the virus.

Horse Inoculation

• The horse was initially injected with 0.5 ml of the virus subcutaneously followed by an intramuscular injection with 1 ml of the virus after seven days. No infectious virus was detected in the horse’s blood, feces, or saliva for three weeks after the second injection.
• The horse then began receiving weekly injections of increasing quantities of the virus. After administering 1000 ml of the virus, the researchers found the horse’s serum to contain a significant concentration of antibodies.

Results and Conclusion

• The researchers concluded on the effectiveness of the hyperimmune anti-B virus horse serum based on the significant concentration of antibodies detected in the horse’s serum after inoculation.
• This research presents a promising approach to creating a potent immune response against the B virus and provides the groundwork for further studies into improving and applying this method in practice. It also has potential implications for the protection of individuals at high risk of getting exposed to the B virus, primarily through their professions dealing with affected monkeys.