Untitled

Cohabitation—relationships of corynebacteria and staphylococci on human skin

“…Lambers et al suggested that this value is much lower—approximately 4.7 (Lambers et al 2006). According to others, a reduction to 4.0–4.5 pH value promotes adhesion of the resident flora to the surface of the skin (Bojar and Holland 2002). In in vitro experiment performed during this study, it was shown that at pH value c.a.…”

“…During our experiments, it was proved that lipophilic corynebacteria have different capacity for adaptation on the skin than staphylococci. It was previously discussed that the distribution of representatives of taxons inhabiting the skin depends on the presence of sebaceous and sweat glands in certain regions of the body (Bojar and Holland 2002; Fredricks 2001). Nutrients present on the skin are triglycerides, diglycerides, monoglycerides, glycerol, cholesterol, and its esters, phospholipids and glycoproteins, urea, amino acids, peptides, and uric acid.…”

“…Exfoliation of the epidermis is the source of protein. Many of these components are products of enzymatic degradation of larger molecules (Bojar and Holland 2002). Our work attempted to determine the association between available nutrients and the bacterial residence capability.…”

“…It may be assumed that the latter ones provide themselves as well as corynebacteria with the products of their enzymatic activities. It is known that to sustain growth, the skin staphylococci need arginine, cysteine, methionine, valine, and aromatic amino acids which are present on the skin as the products of their proteolytic activities (Bojar and Holland 2002). There is no doubt that it is beneficial for corynebacteria on the principle of cross-feeding as for them, amino acids are also the primary nutrients (Bojar and Holland 2002).…”

“…Additionally, most bacteriocins secreted by the gram-positive bacteria are hydrolyzed by proteolytic enzymes (Bojar and Holland 2002; Chiller et al 2001) . According to Funke et al (1997), secretion of proteolytic enzymes by Propionibacterium might have a protective effect by providing secure position among the skin flora.…”