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Related Concept Videos

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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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
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Related Experiment Video

Updated: Jun 4, 2025

Visualizing Scar Development Using SCAD Assay - An Ex-situ Skin Scarring Assay
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Causal relationships between skin microbiome and pathological scars: a bidirectional mendelian randomization study.

Weiwen Zhu1, Xueming Wang1, Derong He1

  • 1Plastic surgery department, Fujian children's hospital, Fuzhou, China.

Archives of Dermatological Research
|December 20, 2024
PubMed
Summary

This study reveals specific skin bacteria are linked to keloid and hypertrophic scars. The research also found that these scars can influence the skin microbiome composition.

Keywords:
Mendelian randomizationPathological scarSkin microbiome

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Area of Science:

  • Microbiology
  • Genetics
  • Dermatology

Background:

  • Skin bacteria infection is a suspected risk factor for wound scar formation, but the precise relationship remains unclear.
  • Understanding the interplay between the skin microbiome and pathological scarring is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the causal relationship between specific skin microbiome compositions and the development of pathological scars, including keloid and hypertrophic scarring.
  • To explore the bidirectional association between skin bacteria and scar formation using advanced genetic analysis.

Main Methods:

  • A bidirectional Mendelian randomization (MR) analysis was performed using genome-wide association study (GWAS) data.
  • Single nucleotide polymorphisms (SNPs) were utilized as instrumental variables (IVs) in MR analyses, including inverse variance weighted (IVW) and MR Egger methods.

Main Results:

  • The IVW analysis identified significant associations between several specific skin bacteria (e.g., Actinomycetales_Sebaceous, Proteobacteria_Sebaceous, Propionibacterium acnes) and keloid scarring.
  • Specific microbial taxa were also significantly linked to hypertrophic scarring, including Chryseobacterium_Moist, Staphylococcus_Moist, and Streptococcus salivarius.
  • Reverse MR analysis indicated that both keloid and hypertrophic scars can influence the composition of the skin microbiome.

Conclusions:

  • This research highlights a potential correlation between particular skin microbiomes and pathological scar development.
  • The identified bidirectional relationship between skin bacteria and scarring offers insights for improving clinical management and reducing scar formation.