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Fatal outbreak of Mycoplasma capricolum pneumonia in endangered markhors.

ABSTRACT: A pneumonia outbreak reduced the numbers of a wild population of endangered markhors (Capra falconeri) in Tajikistan in 2010. The infection was diagnosed by histologic examination and bacteriologic testing. Mycoplasma capricolum subsp. capricolum was the sole infectious agent detected. Cross-species transmission from domestic goats may have occurred.

SUBMITTER: Ostrowski S

PROVIDER: S-EPMC3311196 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundMycoplasmas are among the smallest prokaryotic microbes that can grow and proliferate on non-living media. They have reduced genomes, which may be associated with a concomitant reduction in their metabolic capacity. Mycoplasma capricolum subsp. capripneumoniae (Mccp) and Mycoplasma capricolum subsp. capricolum (Mcc), both belong to the Mycoplasma mycoides cluster, are significant important pathogenic Mycoplasma species in veterinary research field. They share high degree of genome homology but Mcc grows markedly faster and has higher growth titer than Mccp.MethodsThis study investigated the metabolites of these two pathogenic bacteria from the middle and late stages of the logarithmic growth phase through liquid chromatography-mass spectrometry-based metabolomics and targeted energy metabolomics. The multivariate analysis was conducted to identify significant differences between the two important Mycoplasma species.ResultsA total of 173 metabolites were identified. Of them, 33 and 34 metabolites involved in purine and pyrimidine, pyruvate metabolism, and amino acid synthesis were found to significantly differ in the middle and late stages, respectively. The abundance of fructose 1,6-bisphosphate, ADP, and pyruvate was higher in Mcc than in Mccp during the whole logarithmic period. Lactate was upregulated in slow-growing Mccp. The pH buffering agent N-[2-hydroxyethyl]piperazine-N'-[2-ethanesulfonic acid] added to media effectively prevented pH reduction and increase bacterial viability and protein biomass. The multivariate analysis revealed that the two Mycoplasma species significantly differed in glucose metabolism, growth factor transport and metabolism, cholesterol utilization, and environmental regulation.ConclusionThe study data are beneficial for understanding the metabolomic characteristics of these two crucial Mycoplasma species and shedding more light on mycoplasma metabolism, and serve as a resource for the pathogenesis and development of related vaccines.

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Fatal outbreak of Mycoplasma capricolum pneumonia in endangered markhors.

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