Propionibacterium freudenreichii

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Propionibacterium freudenreichii: A Skin Microbe with Dual Roles

Description:

Propionibacterium freudenreichii is a Gram-positive, rod-shaped bacterium that is commonly found on human skin. It is one of the most abundant microbes in the skin microbiome, particularly in the sebaceous areas of the face, back, and chest.

Role in Health:

P. freudenreichii plays a crucial role in maintaining skin health. It produces propionic acid, which has antibacterial and antifungal properties that help protect the skin from harmful microorganisms. Additionally, P. freudenreichii helps to regulate sebum production, preventing acne and other skin conditions.

Associated Diseases:

However, under certain circumstances, P. freudenreichii can also contribute to skin infections and diseases. These include:

• Acne: An overgrowth of P. freudenreichii can clog hair follicles and lead to the formation of acne lesions.
• Folliculitis: Infection of hair follicles by P. freudenreichii, characterized by small, white or red bumps on the skin.
• Erythrasma: A skin infection that causes reddish-brown patches, typically in skin folds.

Did you Know ?

70% of people with mild to moderate acne have increased levels of P. freudenreichii on their skin.