Macrolide Treatment Inhibits Pseudomonas aeruginosa Quorum Sensing in Non-Cystic Fibrosis Bronchiectasis. An Analysis from the Bronchiectasis and Low-Dose Erythromycin Study Trial.

Rationale: The mechanism by which low-dose macrolide therapy reduces exacerbations in non-cystic fibrosis bronchiectasis is not known. Pseudomonas aeruginosa quorum sensing controls the expression of a range of pathogenicity traits and is inhibited by macrolide in vitro. Quorum sensing inhibition renders P.

High resolution spatial mapping of brominated pyrrole-2-aminoimidazole alkaloids distributions in the marine sponge Stylissa flabellata via MALDI-mass spectrometry imaging.

A number of pharmacologically active brominated pyrrole-2-aminoimidazole (B-P-2-AI) alkaloids have been isolated from several families of marine sponges, including those belonging to the genus Stylissa. In the present study, MALDI mass spectrometry imaging (MALDI-imaging) was applied to determine the spatial distribution of B-P-2-AIs within 20 μm cross sections of S. flabellata.

Composition of LDL particle discriminates between hypercholesterolaemic persons with and without symptoms of coronary heart disease.

Background: It is well known that high total and LDL cholesterol concentrations are not prerequisites for ischemic heart disease. This study aimed to differentiate between patients with coronary heart symptoms and healthy subjects with high cholesterol concentrations, using other potential risk factors such as oxidation state, body iron status and the oxidative state of the LDL particle.

Methods: Healthy persons were divided in low cholesterol (<6 mmol/L) (LC) and high cholesterol (> or =6 mmol/L) (HC) groups.

Beneficial effects of blood donation on high density lipoprotein concentration and the oxidative potential of low density lipoprotein.

According to some authors blood donors have a lower risk of cardiovascular incidents. This may be associated with the risk of cardiovascular disease reported by some authors, as well as with the oxidative changes caused by iron. The aim of this study was to determine, what happens to some of the factors contributing to atherosclerosis after the lowering of body iron.