Residence time dependent desorption of Staphylococcus epidermidis from hydrophobic and hydrophilic substrata

Interfacial re-arrangement in initial microbial adhesion to surfaces

“…Experiments in flow displacement systems have indicated that desorption probabilities of both microorganisms as well as of inert polystyrene particles decrease by several orders of magnitude within 1 to 2 min after contact with a substratum surface [25,26]. AFM has confirmed that microbial adhesion forces indeed strengthen exponentially over time by progressively invoking acidbase interaction forces [27 •• ].…”

“…2) until Born repulsion sets in. Once attractive acid-base interactions have become operative, they may dictate more complicated features of the adhesion process, such as reversibility [26] or local immobilization [40 •• ] of adhering microorganisms.…”

In Vitro S. epidermidis and S. aureus Adherence to Composite and Lightweight Polypropylene Grafts

“…In an in vitro experimental study by Boks et al concerning S. epidermidis adhesion to glass surfaces, it is stated that adhesion and desorption are simultaneous events during bacterial adhesion to surfaces [27]. After adhesion, immediate and spontaneous detachment follows.…”

“…After adhesion, immediate and spontaneous detachment follows. It emphasized that as contact time between the bacteria is prolonged, the desorption rate on hydrophilic surfaces is higher than on hydrophobic surfaces [27]. Thus, once S. epidermidis adheres to a hydrophobic surface for a long time, desorption of the bacteria from the surface becomes more difficult, which means intense colonization and biofilm production, resulting in an increased rate of S. epidermidis infection [27].…”

Generalization of the multirate basis for time convolution to unequal forward and reverse rates and connection to reactions with memory

“…The smooth version is capable of reflecting sorptions or attachments that involve bond weakening ( k o > k ∞ ), or bond strengthening ( k o < k ∞ ), including that effectively representing biofilm formation, and has been used by many [ Meinders et al , 1992; Johnson et al , 1995; Ginn , 2000b; Vadillo‐Rodríguez et al , 2004; Boks et al , 2008]. Vadillo‐Rodríguez et al [2004] show atomic force microscopy (AFM) data indicating strengthening of adhesion bond strength of Streptococcus thermophilus to solid substrata.…”