a quick and simple polarographic method for aluminum measurement in recombinant hepatitis b vaccine
نویسندگان
چکیده
abstract background and objective: aluminum salts are among the most common useful additive compounds in preparation of human and animal vaccines. aluminum phosphate and aluminum hydroxide are two additives that show good immunoadjuvant effects with many antigens. aluminum-containing vaccines lead to a better and longer immune response compared to adjuvant-lacking vaccines. the chromogenic methods used for determination of aluminum amounts in manufacturing centers are time-consuming and requires some experienced technicians to obtain accurate results. this study aimed to design and validate a simple polarographic method to measure aluminum in recombinant hepatitis b vaccine. methods: in this study, the effects of temperature, ph, potential range and potential scan rate on the polarographic method of measuring aluminum in hepatitis b vaccine was evaluated and the optimal values for each of these factors were achieved. results: in order to measure aluminum, temperature of 60 °c and ph of 4.5 were found as the optimal values. implementation of polarographic method in the potential range of -0.25 to 0.1 volts had a better signal. conclusion: since the polarography method is more simple, accurate and faster than the chromogenic methods, it is suitable to be used for the measurement of aluminum in hepatitis b vaccine and it is recommended to be used in quality control laboratories for biological products. keywords: adjuvant, hepatitis b vaccine, polarography, aluminum.
منابع مشابه
A Quick and Simple Polarographic Method for Aluminum Measurement in Recombinant Hepatitis B Vaccine
Abstract Background and Objective: Aluminum salts are among the most common useful additive compounds in preparation of human and animal vaccines. Aluminum phosphate and aluminum hydroxide are two additives that show good immunoadjuvant effects with many antigens. Aluminum-containing vaccines lead to a better and longer immune response compared to adjuv...
متن کاملa simple and rapid quantitative method for determination of aluminum in recombinant hepatitis b vaccine
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Evaluation of Thimerosal Removal on Immunogenicity of Aluminum Salts Adjuvanted Recombinant Hepatitis B Vaccine
Thimerosal, which is approximately 50% mercury by weight is a preservative widely used in vaccines since the 1930’s. It meets the requirements for a preservative as set forth by Pharmacopeia challenge test and has been shown to be effective against a broad spectrum of pathogens. In July 1999, the Public Health Service agencies and vaccine manufacturers agreed that thimerosal should be redu...
متن کاملComparison of the Adjuvanticity of Aluminum Salts and Their Combination in Hepatitis B Recombinant Protein Vaccine Assessed in Mice
Background: Several adjuvants have been evaluated for vaccine formulations but alu-minum salts will continue to be used for many years due to their safety, low cost and adjuvanticity with different antigens. Two commonly used aluminum adjuvants, alumi-num hydroxide and aluminum phosphate have different adjuvanticity properties. Com-mercial recombinant protein hepatitis B vaccines containing alu...
متن کاملEvaluation of Thimerosal Removal on Immunogenicity of Aluminum Salts Adjuvanted Recombinant Hepatitis B Vaccine
Thimerosal, which is approximately 50% mercury by weight is a preservative widely used in vaccines since the 1930’s. It meets the requirements for a preservative as set forth by Pharmacopeia challenge test and has been shown to be effective against a broad spectrum of pathogens. In July 1999, the Public Health Service agencies and vaccine manufacturers agreed that thimerosal should be redu...
متن کاملDifferential Immunogenicity of A Recombinant Hepatitis B Vaccine in Iranian Neonates: Influence of Ethnicity and Environmental Factors
Objective: To compare immunogenicity of a recombinant hepatitis B (HB) vaccine in two groups of neonates born in two cities of Iran with different geographic and ethnic backgrounds. Materials and Methods: Ten micrograms of a recombinant HB vaccine was administered under field condition to Iranian healthy neonates at 0, 1.5 and 9 months intervals. The subjects consisted of two groups of 290 an...
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عنوان ژورنال:
medical laboratory journalجلد ۹، شماره ۵، صفحات ۱۶-۲۲
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