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Santos RCD, Pinho FAD, Passos GP, Larangeira DF, Barrouin-Melo SM. Isolation of naturally infecting Leishmania infantum from canine samples in Novy-MacNeal-Nicolle medium prepared with defibrinated blood from different animal species. Vet Parasitol 2018; 257:10-14. [PMID: 29907186 DOI: 10.1016/j.vetpar.2018.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 05/20/2018] [Accepted: 05/21/2018] [Indexed: 11/18/2022]
Abstract
The most commonly used culture medium for the in vitro isolation of Leishmania spp. from canine biological samples is biphasic Novy-MacNeal-Nicolle (NNN) medium, whose solid phase is prepared using rabbit blood. Leishmania infantum parasites from natural infections are highly sensitive and demanding for growth in axenic conditions when firstly obtained from the dog's body. The objective of this study was to evaluate whether NNN medium (NNN-test) prepared with chicken blood (NNN-C), ox blood (NNN-O), horse blood (NNN-H) or sheep blood (NNN-S) was viable for the isolation of parasites from naturally infected dogs, in an endemic area for visceral leishmaniasis caused by L. infantum. Spleen aspirates from six dogs previously diagnosed as infected by parasitological methods were simultaneously inoculated in each NNN-test medium, including the conventional medium prepared with rabbit blood (NNN-R), and the cultures were examined for three weeks under optic microscopy. Spleen samples were also analyzed for parasite loads by quantitative PCR (qPCR). Cultures from three of the six dogs (50%) were positive in at least one of the NNN-test media: one sample presented the highest spleen parasite load by qPCR (1.19 × 104 parasites/mL) and was positive in all test media; the second sample presented parasitic isolation in the first week of culture in all inoculated media, of which the NNN-C medium had the highest mean parasite count (NNN-C = 23.5 × 104/mL vs. NNN-R = 3.25 × 104/mL); the third sample was positive only in the NNN-S medium besides the conventional control NNN-R. Cultures from the three remaining dogs were negative in all NNN media, including the control and test media; of those three dogs, two presented the lowest spleen parasitic loads according to qPCR. Blood from chicken, ox, horse and sheep shown to be viable for the preparation of NNN culture medium for the primary isolation of L. infantum from samples of naturally infected dogs and can be considered as an alternative to rabbit blood when necessary.
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Affiliation(s)
- Roseclea Chagas Dos Santos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Flaviane Alves de Pinho
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil
| | - Gabriela Porfírio Passos
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil
| | - Daniela Farias Larangeira
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil
| | - Stella Maria Barrouin-Melo
- Laboratory of Veterinary Infectious Diseases, Teaching Hospital of Veterinary Medicine, Federal University of Bahia (UFBA), Av. Adhemar de Barros 500, Salvador, BA, CEP: 40170-110, Brazil; Department of Veterinary Anatomy, Pathology and Clinics of the School of Veterinary Medicine and Zootechny, UFBA, Salvador, BA, CEP: 40170-110, Brazil.
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Nasiri V, Dalimi A, Ghaffarifar F. LB broth-lyophilized Rabbit serum (LLR) as a new and suitable culture medium for cultivation of promastigotes of Leishmania major. J Parasit Dis 2017; 41:247-251. [PMID: 28316420 DOI: 10.1007/s12639-016-0786-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 05/17/2016] [Indexed: 11/29/2022] Open
Abstract
Fetal calf serum is the major part and the most expensive ingredient of the Leishmania culture media. Here, the efficacy of the LB broth-lyophilized Rabbit serum medium (LLR) was evaluated in cultivation of Leishmaniamajor. Conventional Luria-Bertani (LB) broth medium was prepared and autoclaved for 15 min at 121 °C and then lyophilized Rabbit serum was added at the 1, 2.5, 5 and 10 % final concentrations. The efficacy of medium was evaluated by assessing the growth ability and replication pattern of the promastigotes of L. major. According to our finding, the LLR medium with 5-10 % lyophilized Rabbit serum supported the growth of the parasites and can be used for cultivation of Leishmanian parasites with acceptable In vivo infectivity for research purpose. The ability of the parasites to survive and proliferating in the presence of lyophilized Rabbit serum indicating that this serum is a good nutritional source. This study opens a new way to make low-cost medium that could be used in cultivation of Leishmanian parasites.
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Affiliation(s)
- Vahid Nasiri
- Department of Parasitology, Razi Vaccine and Serum Research Institute, Alborz, Iran
| | - Abdolhossein Dalimi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Ghaffarifar
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Effects of sheep and mouse urine on the growth pattern of Leishmania major promastigotes. BIOMED RESEARCH INTERNATIONAL 2013; 2013:748592. [PMID: 23957003 PMCID: PMC3728512 DOI: 10.1155/2013/748592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 06/27/2013] [Indexed: 12/24/2022]
Abstract
The protozoan parasites of the genus Leishmania are the causative agents of different clinical diseases. Fetal calf serum (FCS) is the main part and the most expensive ingredient of the Leishmania culture media. Here, the efficacies of different concentrations (1%, 2.5%, 5%, and 10%) of the filtered and autoclaved sheep and mouse urine were evaluated as a growth stimulator in Leishmania culture procedure. The results indicated that culture media enriched with the filtered sheep and mouse urine supported the growth of the parasites and can be used for cultivation of Leishmania parasites. In conclusion, this study has demonstrated an alternative low-cost medium that could be used in cultivation process of Leishmania major promastigotes.
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