Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identifie...Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identified as hemoplasmas using PCR and phylogenetic analysis based on 16 S r RNA and rnp B genes. Results: A total of 148 non-human primates(56.49%) were determined positive for Candidatus Mycoplasma haemomacaque, including 125 Macaca fascicularis and 23 Macaca mulatta. Hemoplasmas can cause anemia in monkey but all positive samples were healthy. The positive rates in male and female non-human primates were not significantly different. Conclusions: Candidatus Mycoplasma infection is prevalent in free ranging Macaca fascicularis and Macaca mulatta in Thailand.展开更多
Hemotrophic mycoplasmas （hemoplasmas） infection is an uncommon zoonosis. The infection in human is rare worldwide, but prevalence in some areas in Inner Mongolia, China reaches 70%-90%. Hemoplasmas have been implica...Hemotrophic mycoplasmas （hemoplasmas） infection is an uncommon zoonosis. The infection in human is rare worldwide, but prevalence in some areas in Inner Mongolia, China reaches 70%-90%. Hemoplasmas have been implicated but not proven to be involved in the formation of atherosclerosis. To determine whether there is a causal relationship, the effect of hemoplasmas infection on the development of atherosclerosis was assessed in the low density lipoprotein receptor knockout ldlr-/- mouse. Methods The 4- week-old ldlr-/- mice were inoculated with human hemoplasmas. Atherosclerotic lesions were measured with perfusion staining and aortic root sectioning. The levels of complements were quantified using ELISA. Results Atheroma formation was accelerated over a 26-week period in the infected ldlr-/- mice compared with the uninfected ldlr-/- control mice. The acceleration of atherosclerosis was slowed down by tetracycline administration. Histological analysis of the atheromatous plaques showed larger and thicker lesions in infected mice than in control mice. Membrane attack complex （MAC）, C5b-9, was present in the aortas of the infected mice, which suggests that the pathogen may activate complements and cause inflammation on endothelium, thus accelerate the development of atherosclerosis. Conclusions These data demonstrate that the zoonosis, hemoplasma infection, can accelerate atherosclerotic lesion formation in the ldlr-/- mice. The study provides the first report of a murine model for studying the causative role of hemoplasmas infection in the development of atherosclerosis.展开更多
基金supported by Faculty of Veterinary Science, Mahidol University
文摘Objective: To survey hemoplasmas infection in free ranging non-human primates from 8 provinces in Thailand. Methods: DNA from ethylenediaminetetraacetic acid blood of 262 free ranging non-human primates were identified as hemoplasmas using PCR and phylogenetic analysis based on 16 S r RNA and rnp B genes. Results: A total of 148 non-human primates(56.49%) were determined positive for Candidatus Mycoplasma haemomacaque, including 125 Macaca fascicularis and 23 Macaca mulatta. Hemoplasmas can cause anemia in monkey but all positive samples were healthy. The positive rates in male and female non-human primates were not significantly different. Conclusions: Candidatus Mycoplasma infection is prevalent in free ranging Macaca fascicularis and Macaca mulatta in Thailand.
基金supported by National Natural Science Foundation of China,81260064
文摘Hemotrophic mycoplasmas （hemoplasmas） infection is an uncommon zoonosis. The infection in human is rare worldwide, but prevalence in some areas in Inner Mongolia, China reaches 70%-90%. Hemoplasmas have been implicated but not proven to be involved in the formation of atherosclerosis. To determine whether there is a causal relationship, the effect of hemoplasmas infection on the development of atherosclerosis was assessed in the low density lipoprotein receptor knockout ldlr-/- mouse. Methods The 4- week-old ldlr-/- mice were inoculated with human hemoplasmas. Atherosclerotic lesions were measured with perfusion staining and aortic root sectioning. The levels of complements were quantified using ELISA. Results Atheroma formation was accelerated over a 26-week period in the infected ldlr-/- mice compared with the uninfected ldlr-/- control mice. The acceleration of atherosclerosis was slowed down by tetracycline administration. Histological analysis of the atheromatous plaques showed larger and thicker lesions in infected mice than in control mice. Membrane attack complex （MAC）, C5b-9, was present in the aortas of the infected mice, which suggests that the pathogen may activate complements and cause inflammation on endothelium, thus accelerate the development of atherosclerosis. Conclusions These data demonstrate that the zoonosis, hemoplasma infection, can accelerate atherosclerotic lesion formation in the ldlr-/- mice. The study provides the first report of a murine model for studying the causative role of hemoplasmas infection in the development of atherosclerosis.
