Effect of Gravity on Bacterial Adhesion to Heterogeneous Surfaces.
Effect of Gravity on Bacterial Adhesion to Heterogeneous Surfaces.
复制标题
重力对异质表面细菌粘附的影响。
DOI:
10.3390/pathogens12070941
复制
发表时间:
2023-07-15
期刊:
影响因子:
--
通讯作者:
中科院分区:
文献类型:
--
作者:
Bacterial adhesion is the first step in the formation of surface biofilms. The number of bacteria that bind to a surface from the solution depends on how many bacteria can reach the surface (bacterial transport) and the strength of interactions between bacterial adhesins and surface receptors (adhesivity). By using microfluidic channels and video microscopy as well as computational simulations, we investigated how the interplay between bacterial transport and adhesivity affects the number of the common human pathogen Escherichia coli that bind to heterogeneous surfaces with different receptor densities. We determined that gravitational sedimentation causes bacteria to concentrate at the lower surface over time as fluid moves over a non-adhesive region, so bacteria preferentially adhere to adhesive regions on the lower, inflow-proximal areas that are downstream of non-adhesive regions within the entered compartments. Also, initial bacterial attachment to an adhesive region of a heterogeneous lower surface may be inhibited by shear due to mass transport effects alone rather than shear forces per se, because higher shear washes out the sedimented bacteria. We also provide a conceptual framework and theory that predict the impact of sedimentation on adhesion between and within adhesive regions in flow, where bacteria would likely bind both in vitro and in vivo, and how to normalize the bacterial binding level under experimental set-ups based on the flow compartment configuration.
登录
查看更多内容
DOI:
10.1038/s41579-020-0324-0
发表时间:
2020-04
期刊:
Nature reviews. Microbiology
影响因子:
--
作者:
Klein RD;Hultgren SJ
通讯作者:
Hultgren SJ
DOI:
10.1038/nrmicro3432
发表时间:
2015-05
期刊:
Nature reviews. Microbiology
影响因子:
--
作者:
Flores-Mireles AL;Walker JN;Caparon M;Hultgren SJ
通讯作者:
Hultgren SJ
影响因子:
4.4
作者:
Foxman, Betsy
通讯作者:
Foxman, Betsy
影响因子:
9.4
作者:
Diekema, DJ;Beekmann, SE;Doern, GV
通讯作者:
Doern, GV
影响因子:
2.8
作者:
Boks, Niels P.;Norde, Willem;Busscher, Henk J.
通讯作者:
Busscher, Henk J.