AIM To assess five main histological features of gastritis in gastric mucosa colonized with Helicobacter pylori before and after the treatment. METHODS Histologic assessment of H. pylori-associated gastritis was performed according to the Sydney classification before and after the treatment in 97 patients. Two additional parameters - the presence of lymphocytic aggregates and coccoid forms of...

2.4 Cyanobacterial Fossils.................................................. 22 2.4.1 Filamentous Cyanobacteria ............................................ 22 2.4.1.1 Oscillatoriaceae .............................................................. 22 2.4.1.2 Nostocaceae .................................................................... 24 2.4.2 Coccoid and Ellipsoid Cyanobacteria ...............

UNLABELLED Dividing cells of the coccoid Gram-positive bacterium Staphylococcus aureus undergo extremely rapid (millisecond) daughter cell separation (DCS) driven by mechanical crack propagation, a strategy that is very distinct from the gradual, enzymatically driven cell wall remodeling process that has been well described in several rod-shaped model bacteria. To determine if other bacteria, e...

The net benefits of mutualism depend directly on the costs and effectiveness of mutualistic services and indirectly on the interactions that affect those services. We examined interactions among Cordia alliodora myrmecophytic trees, their symbiotic ants Azteca pittieri, coccoid hemipterans, and foliar herbivores in two Neotropical dry forests. The tree makes two investments in symbiotic ants: i...

An experimental murine model was used to verify the viability and pathogenicity of coccoid Helicobacter pylori. For this purpose, 27 BALB/c mice were inoculated intragastrically with 1 ml broth culture (10(8)organisms/ml) of a coccoid H. pylori clinical isolate. The animals were divided into two groups. Nine were infected on a one-time basis (GA1) and 18 were infected on two consecutive days (G...

Dischidia major is an epiphyte with pitcher leaves that serve as nests for ants. We investigated this ant-plant symbiosis in two sites southeastern Thailand, Rayong and Trat, using a morphological molecular approach. In our study sites, D. was colonized by one monomorphic ant species of genus Philidris. The inner surface the had black green lining composed intermingled coccoid cells filaments a...

Helicobacter pylori causes chronic gastritis punctuated with fluctuating episodes of acute distress that can lead to peptic ulcer disease. Several factors produced by the bacterium have been shown to initiate the inflammatory response, but mechanisms potentially involved in the down-regulation of inflammation have not been described. We show that nitric oxide (NO) released from synthetic NO gen...

A bacillus was found associated in pure culture with an extensive lobar bronchopneumonia in calves. It occurs in the exudate as a minute bacillus in small groups. In cultures it appears in three forms: as a bacillus, as a coccus-like endospore or arthrospore, and as a conglomerate Actinomyces-like flake or colony with peripheral clubs. The bacillar and coccoid forms occur on agar, the Actinomyc...