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Skin Diseases and Disorders01:23

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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Cutaneous Malassezia: Commensal, Pathogen, or Protector?

Shree Harsha Vijaya Chandra1, Ramasamy Srinivas1, Thomas L Dawson1,2

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Frontiers in Cellular and Infection Microbiology
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The skin microbiome, including the fungus Malassezia, impacts skin health. Understanding Malassezia

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Area of Science:

  • Microbiology
  • Dermatology
  • Mycology

Background:

  • The skin microbiome is a complex ecosystem vital for host defense and immune balance.
  • Malassezia, a lipid-dependent yeast, is a significant component of the skin microbiome.
  • Understanding Malassezia's interactions is crucial for skin health and disease insights.

Purpose of the Study:

  • To review recent advancements in understanding Malassezia's role in the skin microbiome.
  • To explore Malassezia's diverse functions as a commensal, pathogen, and protector.
  • To highlight the implications for developing microbiome-targeted interventions.

Main Methods:

  • Review of recent literature on Malassezia culture, detection, and genetic manipulation.
  • Analysis of host-microbe and microbe-microbe interactions involving Malassezia.
  • Examination of Malassezia's involvement in various skin conditions.

Main Results:

  • New tools have revealed Malassezia's ubiquity and its pathogenic roles in conditions like seborrheic dermatitis and psoriasis.
  • Malassezia exhibits multifaceted interactions, including pathogenicity, commensalism, and mutualistic protective activities.
  • Research is identifying key factors influencing skin homeostasis and pathogenic shifts.

Conclusions:

  • Increased understanding of Malassezia's interactions is paving the way for novel therapeutic targets.
  • Malassezia plays a critical, often dual role in skin health and disease.
  • Further research into these interactions will advance functional skin health knowledge.