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skin Flora 1

skin flora

A healthy skin is densely populated with microorganisms such as bacteria and fungi that pose as commensals or Mutual a natural component of skin surface and are summarized as skin flora. They represent an important prerequisite for the skin itself and the organism to protect as a whole against pathogenic bacteria and are part of the microbiome

Introduction

If the skin intact as a boundary element to the outside world and thus their barrier function can only meet, do not disturb these germs do not ill and for several reasons very useful. For as the harmless commensals to us may be, they are at the microscopic level aggressively striving to defend their turf. If a pathogen will invade the body, he must, therefore, first of all to grapple with these "bouncers". Only those claims against the resident flora, can penetrate deeper. Only secondarily they produce metabolic products that have a positive impact on the properties of the skin.

The individual skin regions show a very different spectrum of germs. The hair follicles are home while most of the germs, and what a. is crucial for the formation of so-common diseases such as acne or folliculitis.

factors

moisture, pH and oxygen supply, depending on the skin area is very different, accordingly, the distribution of the individual "normal" bacteria are not strictly uniform. Depending on the skin region, age, gender, genetic predisposition and environmental conditions, both the spectrum of germs, and the bacterial counts of the normal skin flora can be very different. Thus found a study by the New York University, which examined the microbes on the forearms of six people, a total of 182 different species of bacteria anaerobic strains of eight, but only four species appeared in all six. [1] The ratio of aerobic species is relatively balanced with 10:1. The bacterial densities, depending on the region 102-106 per cm ². Approximate counts of different skin regions (number of bacteria per cm ²): fingertips 20 - 100, back 3 x 102 feet, 102-103, forearm 102-5 x 103, hand 103, front 2 x 105 scalp 106, armpit 2 x 106th A total of around 1010 bacteria live on our skin surface.

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