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Comparison of Conjunctival Sac Microbiome between Low and High Myopic Eyes

  • Systems and Synthetic Microbiology and Bioinformatics
  • Published:
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Abstract

Microbial communities played a vital role in maintaining homeostasis of ocular surface. However, no studies explored the myopia-associated conjunctiva microbiota changes until now. In this study, conjunctival sac swab specimens were collected from 12 eyes of low myopia (LM), and 14 eyes of high myopia (HM) patients. The V3–V4 region of the 16S rRNA gene was amplified and then sequenced. Statistical analysis was performed to investigate differences in the taxonomy and diversity between two groups. Compared to LM, higher Ocular Surface Disease Index (OSDI) scores were observed in HM group. The Shannon index of the HM was lower than that of the LM group (P = 0.017). Principle coordinate analysis and Partial Least Squares Discrimination Analysis showed distinct microbiome composition between two groups. At the phylum level, there were higher relative abundances of Proteobacteria (68.27% vs 38.51%) and lower abundances of Actinobacteria (3.71% vs 9.19%) in HM, compared to LM group (P = 0.031, 0.010, respectively). At the genus level, the abundances of Acinetobacter in HM (18.16%) were significantly higher than the LM (6.52%) group (P = 0.011). Actinobacteria levels were negatively correlated with the myopic spherical equivalent and OSDI scores. Moreover, positive correlations were found between Proteobacteria levels and OSDI scores, Acinetobacter levels were positively correlated with myopic spherical equivalent and OSDI scores. In conclusion, HM Patients have bacterial microbiota imbalance in the conjunctival sac, compared with LM patients. Proteobacteria, Actinobacteria, Acinetobacter may play roles in the HM associated ocular surface irritation.

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Data Availability

The data and materials supporting all the results of this study are available from the corresponding author upon the reasonable requests.

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Acknowledgements

This research supported by the National Natural Science Foundation of China [Number 81870685], the Natural Science Foundation of Beijing Municipality [Number 7172173], the Peking Union Medical College Hospital Deposit Integration Commission Funds [Number ZC201904168].

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Correspondence to Qin Long.

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The study was approved by local ethics committee of Peking Union Medical College Hospital (ZS-3092) and informed consent was obtained from all study participants.

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Xiao, K., Chen, Z. & Long, Q. Comparison of Conjunctival Sac Microbiome between Low and High Myopic Eyes. J Microbiol. 61, 571–578 (2023). https://doi.org/10.1007/s12275-023-00045-5

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  • DOI: https://doi.org/10.1007/s12275-023-00045-5

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