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. 2021 Jan;43(1):43-53.
doi: 10.1007/s13258-020-01029-0. Epub 2021 Jan 11.

Metagenomics analysis of the gut microbiome in healthy and bacterial pneumonia forest musk deer

Wei Zhao  1 , Ziwei Ren  1 , Yan Luo  2 , Jianguo Cheng  3 , Jie Wang  1 , Yin Wang  1 , Zexiao Yang  1 , Xueping Yao  1 , Zhijun Zhong  1 , Wei Yang  1 , Xi Wu  1
Affiliations

Metagenomics analysis of the gut microbiome in healthy and bacterial pneumonia forest musk deer

Wei Zhao et al. Genes Genomics. 2021 Jan.

Abstract

Background: The forest musk deer (FMD, Moschus berezovskii) is an threatened species in China. Bacterial pneumonia was found to seriously restrict the development of FMD captive breeding. Historical evidence has demonstrated the relationship between immune system and intestinal Lactobacillus in FMD.

Objective: We sought to elucidate the differences in the gut microbiota of healthy and bacterial pneumonia FMD.

Methods: The bacterial pneumonia FMD was demonstrated by bacterial and pathological diagnosis, and the gut microbiome of healthy and bacterial pneumonia FMD was sequenced and analysed.

Results: There are three pathogens (Pseudomonas aeruginosa, Streptococcus equinus and Trueperella pyogenes) isolated from the bacterial pneumonia FMD individuals. Compared with the healthy group, the abundance of Firmicutes and Proteobacteria in the pneumonia group was changed, and a high level of Proteobacteria was found in the pneumonia group. In addition, a higher abundance of Acinetobacter (p = 0.01) was observed in the population of the pneumonia group compared with the healthy group. Several potentially harmful bacteria and disease-related KEGG subsystems were only found in the gut of the bacterial pneumonia group. Analysis of KEGG revealed that many genes related to type IV secretion system, type IV pilus, lipopolysaccharide export system, HTH-type transcriptional regulator/antitoxin MqsA, and ArsR family transcriptional regulator were significantly enriched in the metagenome of the bacterial pneumonia FMD.

Conclusion: Our results demonstrated that the gut microbiome was significantly altered in the bacterial pneumonia group. Overall, our research improves the understanding of the potential role of the gut microbiota in the FMD bacterial pneumonia.

Keywords: Bacterial pneumonia; Disease-related KEGG subsystems; Forest musk deer; Gut microbiome.

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