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Microbiome of the Eye01:22

Microbiome of the Eye

The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...

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Ocular Surface Microbiota in Naïve Keratoconus: A Multicenter Validation Study.

Carlos Rocha-de-Lossada1,2,3, Cosimo Mazzotta4,5,6, Federico Gabrielli7

  • 1Eyemetagenomics Ltd., 71-75, Shelton Street, Covent Garden, London WC2H 9JQ, UK.

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Summary
This summary is machine-generated.

This study analyzed the ocular microbiome in keratoconus patients using 16S rRNA sequencing. Unique bacterial genera, Pelomonas and Ralstonia, were identified in keratoconus patients, suggesting a role for the ocular microbiota in disease development.

Keywords:
keratoconusmetagenomicsmicrobiotavalidation-study

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Area of Science:

  • Ophthalmology
  • Microbiology
  • Genomics

Background:

  • The ocular microbiome's role in eye diseases is increasingly recognized.
  • Keratoconus is a complex corneal disease with multifactorial origins.
  • Understanding the microbial composition in early-stage keratoconus is crucial.

Purpose of the Study:

  • To characterize the ocular microbiota in treatment-naïve keratoconus patients.
  • To compare the ocular microbiome of keratoconus patients with healthy controls.
  • To identify specific microbial signatures associated with keratoconus.

Main Methods:

  • Utilized next-generation sequencing (NGS) with 16S rRNA gene sequencing.
  • Collected ocular samples from 38 keratoconus patients and 167 healthy controls.
  • Analyzed microbial relative abundance at the phylum and genus levels.

Main Results:

  • Identified significant differences in microbial composition between keratoconus and control groups.
  • Discovered two bacterial genera, Pelomonas and Ralstonia, uniquely present in keratoconus patients.
  • Observed alterations in the relative abundance of microorganisms in the ocular microbiome of keratoconus.

Conclusions:

  • The ocular microbiota composition is altered in patients with keratoconus.
  • Pelomonas and Ralstonia may serve as potential biomarkers for keratoconus.
  • Microbiota dysbiosis could contribute to the pathogenesis of keratoconus.