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- Gram + pleomorphic rods; Diphtheroids 2) Aerotolerant anaerobes, i.e, obligate fermenters - only produce ATP via SLP. 3) Inhabit anaerobic microenvironments of the skin (hair follicles). 4) Produce propionic acid as 1^ fermentation end product. 5) Ferment lactic acid; extract residual energy from a waste product of other bacteria. 6) Propionibacterium acnes - Acne (p. 523)
What else can I help you with?
What type of bacteria causes acne?
PROPIONIBACTERIUM
Medium for growing propionibacterium?
Propionibacterium can be grown in a medium like Brain Heart Infusion (BHI) broth or agar, which provides nutrients such as amino acids, vitamins, and minerals for its growth. Additionally, specialized media like Reinforced Clostridial Medium (RCM) or Sodium Propionate Agar can also be used to cultivate Propionibacterium species.
What is the optimum pH and temperature for growth of Propionibacterium shermanii?
The optimum pH for growth of Propionibacterium shermanii is typically around pH 6.5-7.0. For temperature, it grows best at around 30-37°C. These conditions are favorable for the growth and metabolism of Propionibacterium shermanii in various applications such as food fermentation.
When was propionibacterium shermanii discovered?
refer this paper www.pubmedcentral.nih.gov/articlerender.fcgi?artid=186833
What is Propionibacterium shermanii?
Propionibacterium shermanii is a species of bacteria commonly found in fermented dairy products like Swiss cheese. It plays a role in the production of propionic acid, which contributes to the flavor and texture of the cheese. Additionally, P. shermanii is considered a beneficial bacteria for its probiotic properties.
What are the virulence factors for propionibacterium acnes?
The primary virulence factors of propionibacterium acnes are lipase (which helps to break down the yucky oils/lipids on our face), hyaluronidase (which is an enzyme that breaks down the connective tissues and increases the permeability of connective tissues), neuraminidase, proteases, inflammatory mediators, and other enzymes.
What hydrolysis test would a positive test result be expected for the etiologic agent of acne Propionibacterium acnes?
Triglycerides hydrolysis test because this bacterium feeds on fatty acids.
What is propionibacterium acnes?
Propionibacterium acnes, now reclassified as Cutibacterium acnes, is a gram-positive bacterium commonly found on human skin. It is part of the normal skin microbiota and plays a role in maintaining skin health. However, it is also associated with acne vulgaris, as it can proliferate in blocked hair follicles, leading to inflammation and acne lesions. Additionally, it has been implicated in other skin conditions and may contribute to the development of certain infections.
Are some diseases caused by bacteria?
Yes, there are many. A few are : Actinomyces which cause respiratory diseases and cavities, Propionibacterium which can cause acne and Bortadella which causes pertussis better known as whooping cough.
What kind of bacteria causes acne?
The primary bacteria that causes acne is Propionibacterium acnes. It is a normal part of the skin microbiota but can contribute to acne when it multiplies excessively in hair follicles, leading to inflammation and the formation of pimples.
What is the vector of acne?
one of the major causes of acne is Propionibacterium acne bacteri,although it is a normal bacteria found in skin but it the vector which in certain circumstances can cause blockage of the follicle on the skin surface and result in acne formation
When does moderate and severe inflammatory types of acne occur?
result after the plugged follicle is invaded by Propionibacterium acnes, a bacteria that normally lives on the skin. A pimple forms when the damaged follicle weakens and bursts open, releasing sebum, bacteria, and skin
