In the scientific literature, a small amount of information is found concerning mycoplasmosis in camel species. A variety of pathogens could be causative agents for pneumonia, but walking pneumonia is mostly caused by Mycoplasma with slow development and mild symptoms. The aim of this study was to identify mycoplasmas from camels (Camelus dromedarius) and extending the arsenal of factors implicated in pathogenicity of M. arginini to shed light on the current knowledge gap. 460 lung samples (pneumonic; n=210 and apparently healthy; n=250) were randomly collected from the one-humped camels (C. domedarius) that have been imported from Sudan and slaughtered at Cairo Slaughterhouse. 48 out of 210 isolates (22.9%) recovered from the pneumonic lungs were recorded as M. arginini. Positive PCR results were obtained for all 48 isolates. On the other hand, infection with the organism was not detected in the apparently healthy lungs. Hemolysis and hydrogen sulphide (H2S) production, a compound that has previously not been identified as a virulence factor in M. arginini, was evident in 100% of the isolates. The 48 M. arginini isolates were weak in their ability to form biofilm on polystyrene surfaces. All isolates were 100% susceptible to florfenicol and streptomycin and 100% resistant to ciprofloxacin. Resistance to lincomycin, spiromycin, tylosin, doxacyclin and erythromycin was observed at different frequencies. 13 different combinations of antibiotics representing one to four classes were evident with the Macrolide erythromycin being the most represented. It also should be noted that the ciprofloxacin, doxacyclin, lincomycin, erythromycin combination was the most noted in 21/48 isolates. Surprisingly, none of the virulence genes (vsp, uvrC and gapA) and quinolone resistance genes (parC and gyrA) were detected by PCR.

中文翻译：

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驼峰骆驼（Camelus dromedarius）中人畜共患性步行性肺炎支原体支原体的毒力，抗药性和系统发育分析。

在科学文献中，发现了少量有关骆驼种支原体病的信息。多种病原体可能是引起肺炎的病原体，但步行型肺炎主要是由支原体引起的，其发展缓慢且症状较轻。本研究的目的是从骆驼（骆驼属）中鉴定支原体，并扩展与精氨酸分枝杆菌致病性有关的因素的库，以阐明当前的知识差距。从苏丹进口并在开罗屠宰场屠宰的一头驼（C. domedarius）中随机收集了460个肺样本（肺炎； n = 210，显然健康； n = 250）。从肺炎肺中回收的210株分离株中有48株（占22.9％）被记录为精氨酸支原体。所有48个分离株均获得阳性PCR结果。另一方面，在显然健康的肺中未检测到该生物体感染。溶血和硫化氢（H2S）的产生是一种以前未在精氨酸分枝杆菌中被鉴定为致病因子的化合物，在100％的分离物中很明显。48株精氨酸分枝杆菌分离物在聚苯乙烯表面形成生物膜的能力较弱。所有分离株均对氟苯尼考和链霉素敏感，100％对环丙沙星耐药。在不同频率下观察到对林可霉素，螺旋霉素，泰乐菌素，多西环素和红霉素的抗性。很明显，代表一到四类的13种不同的抗生素组合以大环内酯类红霉素最为明显。还应该注意的是，环丙沙星，多沙环素，林可霉素，红霉素的组合在21/48分离物中最为明显。