Blind-well chemotaxis chambers were used to study the in vitro bacterial adhesion and colonization of biomaterials. Staphylococcus aureus and Pseudomonas aeruginosa were selected for the bacterial inocula. Abundant growth on the surfaces of methyl methacrylate, polyethylene, stainless steel, and Vitallium was detected by using scanning electron microscopy after 24 h of incubation. The culture t...

background: central venous (cv) catheters play an essential role in the management of critically ill patients in the intensive care unit (icu). cv lines are, however, allied to catheter-associated blood stream infections. bacterial colonization of cv lines is deemed the main cause of catheter-associated infection. the purpose of our study was to compare bacterial colony counts in the catheter s...

Gland colonization may be one crucial route for bacteria to maintain chronic gastrointestinal infection. We developed a quantitative gland isolation method to allow robust bacterial population analysis and applied it to the gastric pathobiont Helicobacter pylori After infections in the murine model system, H. pylori populations multiply both inside and outside glands in a manner that requires t...

Bacterial colonization of biotic or abiotic surfaces results from two quite distinct physiological processes, namely bacterial adhesion and biofilm formation. Broadly speaking, a biofilm is defined as the sessile development of microbial cells. Biofilm formation arises following bacterial adhesion but not all single bacterial cells adhering reversibly or irreversibly engage inexorably into a se...

Pneumococcal endocarditis is an uncommon disease. Here, we describe a case of endocarditis caused by Streptococcus pneumoniae in a young man following a nose trauma. In traumas that involve the respiratory system and the mucous membrane, bacterial complications such as colonization and bacteremia and end-organ involvement should be considered by physicians.

Enterohemorrhagic Escherichia coli O157:H7 has a natural reservoir in the intestinal tracts of cattle. Colonization is asymptomatic and transient, but it is not clear if protective immunity is induced. This study demonstrates that prior colonization induces humoral immune responses to bacterial antigens and reduces bacterial shedding after experimental challenge with the homologous strain.

We read with interest the paper by Shan et al. [1] in a recent issue. It is an interesting paper concluding that Helicobacter pylori (H. pylori) omp18 is indirectly affecting long term bacterial colonization by successfully influencing IFN-γmediated immune response. Nevertheless, we found that some statements could not support the final conclusion. H. pylori infects the gastric mucosal layer of...

....................................................................................................................... 6 LIST OF ORIGINAL PUBLICATIONS ......................................................................... 8 ABBREVIATIONS ............................................................................................................ 9 INTRODUCTION ..................................

The impact of bacterial colonization on the severity and pattern of chronic inflammation in rhinosinusitis is not clear. In this study, it was hypothesized that bacterial colonization of the sinus mucosa would have a greater impact on inflammatory response modulation in asthmatic patients than in non-asthmatic patients with chronic rhinosinusitis. In order to test this hypothesis, granulocyte a...

Receipt of broad-spectrum antibiotics enhances Candida albicans colonization of the GI tract, a risk factor for haematogenously-disseminated candidiasis. To understand how antibiotics influence C. albicans colonization, we treated mice orally with vancomycin or a combination of penicillin, streptomycin, and gentamicin (PSG) and then inoculated them with C. albicans by gavage. Only PSG treatment...