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Isolating Nasal Olfactory Stem Cells from Rodents or Humans
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The nasal microbiome mirrors and potentially shapes olfactory function.

Kaisa Koskinen1,2, Johanna L Reichert2,3, Stefan Hoier4

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The nasal microbiome composition is linked to olfactory function in healthy adults. Specific bacteria, like those producing butyric acid, may impair the sense of smell.

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Area of Science:

  • Otorhinolaryngology
  • Microbiology
  • Human Health

Background:

  • Olfactory function is crucial for well-being and health.
  • Olfactory dysfunction is associated with serious diseases.
  • The nasal microbiome plays a role in olfactory epithelium development.

Purpose of the Study:

  • To investigate the relationship between olfactory function and the nasal microbiome.
  • To analyze differences in microbial community composition across olfactory function groups.

Main Methods:

  • Assessed olfactory function (odor threshold, discrimination, identification) in 67 healthy volunteers.
  • Analyzed nasal microbiome composition.
  • Compared microbial communities between normal, "good normosmic", and hyposmic groups.

Main Results:

  • Significant differences in microbial community composition were observed between the three olfactory groups.
  • Butyric acid-producing microorganisms were associated with impaired olfactory function.
  • The study identified a potential interplay between the olfactory epithelium microbiome and olfactory function.

Conclusions:

  • Nasal microbiome composition can mirror and potentially influence olfactory function.
  • Microbial metabolites, such as odor compounds, may shape olfactory perception.
  • Further research into the microbiome-olfactory axis is warranted.