ABSTRACT
Abstract@#In pharmaceutical industry there are some possibilities of contamination and cross contamination because of improper cleaning of equipment, apparatus, processing area or the starting material, this can lead to severe hazards, therefore in pharmaceutical industry we could not afford any contamination as well as cross contamination. This can be minimized by proper cleaning of equipment, apparatus as well as the processing area. Prevention of cross contamination is one of the most significant conditions of Good Manufacturing Practices for drugs. This is especially topical for a multipurpose (shared) manufacture where several medicinal products, including drugs of different pharmacotherapeutic groups, are produced using the same facilities (manufacturing areas, workrooms, and equipment). The industry is able to achieve these key goals with the help of implementation of GMP. Therefore, a perfect cleaning method is required for avoiding the possibilities of contamination and cross contamination, for this a validated program is required, this program is known as cleaning validation. “Cleaning validation is documented evidence which assure that cleaning of equipment, piece of equipment or system will obtain pre-determined and acceptable limits”.
ABSTRACT
Background: Mannheimia haemolytica is the primary bacterial pathogen in causing bovine respiratory disease with tremendous annual losses in the cattle industry. The leukotoxin from M. haemolytica is the predominant virulence factor. Several leukotoxin activity assays are available but not standardized regarding sample preparation and cell line. Furthermore, these assays suffer from a high standard error, a prolonged time consumption and often complex sample pretreatments, which is important from the bioprocess engineering point of view. Results: Within this study, an activity assay based on the continuous cell line BL3.1 combined with a commercial available adenosine triphosphate viability assay kit was established. The leukotoxin activity was found to be strongly dependent on the sample preparation. Furthermore, the interfering effect of lipopolysaccharides in the sample could be successfully suppressed by adding polymyxin B. We reached a maximum relative P95 value of 14%, which is more than seven times lower compared to current available assays as well as a time reduction up to 88%. Conclusion: Ultimately, the established leukotoxin activity assay is simple, fast and has a high reproducibility. Critical parameters regarding the sample preparation were characterized and optimized making complex sample purification superfluous.