Mucin-bacterial interactions in the human oral cavity and digestive tract

Bacterial interactions within the digestive tract

Interactions between bacteria which constitute the microflora of the digestive tract may be antagonistic or synergic. Certain bacteria can form a barrier to prevent colonisation of the gut by bacteria of other species or other strains of the same species. This review of current research refers to experiments on gnotoxenic animals, with mention of Escherichia coli and species of Clostr idium, La...

Bacterial biogeography of the human digestive tract

We present bacterial biogeography as sampled from the human gastrointestinal tract of four healthy subjects. This study generated >32 million paired-end sequences of bacterial 16S rRNA genes (V3 region) representing >95,000 unique operational taxonomic units (OTUs; 97% similarity clusters), with >99% Good's coverage for all samples. The highest OTU richness and phylogenetic diversity was found ...

Oral Cavity and Gastrointestinal Tract: Overview

IV. DIGESTIVE TRACT BACTERIA 1. Microbial Ecology of the Human Oral Cavity The teeth and oral epithelial surfaces are colonised by a great variety of bacte

The teeth and oral epithelial surfaces are colonised by a great variety of bacte­ rial species. A partial list of indigenous (autochthonous) organisms found in the adult human mouth is shown in Table 11 (Gibbons and van Houte, 1975; Gibbons and van Houte, 1978; Rose­ bury, 1962; Socransky and Haffajee, 1988; van Houte, 1980). Characteristi­ cally, such indigenous bacteria are well adjusted to t...

the study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media

امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...