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Growth study of a nonpathogenic strain of Leishmania donovani with different nutrients
1Indian Veterinary Research Institute, Calcutta.
Abstract:
The studies on growth pattern of a nonpathogenic Leishmania donovani, strain UR6, in different media showed that it can be regularly cultivated amd maintained in modified Ray's Medium (Agar) and three other liquid media, namely DME Medium, Medium 199 and RPMI-1640 which are manufactured in India. The well known N.N.N. Medium provided quantitatively poorer growth in comparison to these medium. Measurement of L. donovani cell concentration by optical density in a spectrophotometer has been worked out for expressing immunochemical observations on antigens in terms of cells per mililitre.
Insights
Leishmania donovani can be effectively cultured in Indian-manufactured DME, Medium 199, and RPMI-1640, outperforming NNN medium. This research aids in understanding parasite growth for immunological studies.
Area of Science:
- Parasitology
- Microbiology
- Immunology
Background:
- Leishmania donovani is a nonpathogenic parasite.
- Cultivating Leishmania donovani is crucial for research.
- Optimizing culture media can improve experimental outcomes.
Purpose of the Study:
- To evaluate the growth patterns of Leishmania donovani strain UR6 in various culture media.
- To compare the efficacy of Indian-manufactured media with traditional media.
- To establish a method for quantifying parasite concentration for immunological studies.
Main Methods:
- Cultivation of Leishmania donovani strain UR6 in modified Ray's Medium (Agar), DME Medium, Medium 199, RPMI-1640, and N.N.N. Medium.
- Quantitative assessment of parasite growth in different media.
- Measurement of Leishmania donovani cell concentration using optical density in a spectrophotometer.
Main Results:
- Modified Ray's Medium (Agar), DME Medium, Medium 199, and RPMI-1640 supported regular cultivation and maintenance of Leishmania donovani.
- Indian-manufactured liquid media (DME, Medium 199, RPMI-1640) provided superior growth compared to N.N.N. Medium.
- A spectrophotometric method was established for measuring Leishmania donovani cell concentration.
Conclusions:
- Indian-manufactured DME, Medium 199, and RPMI-1640 are suitable and effective media for culturing Leishmania donovani.
- These media offer advantages over N.N.N. Medium for parasite cultivation.
- The developed spectrophotometric method allows for accurate quantification of parasite cells, aiding in immunochemical studies.