-A Known Opponent against Host Defense Mechanisms and Vaccine Development-Do We Still Have a Chance to Win?

The main purpose of this review is to present justification for the urgent need to implement specific prophylaxis of invasive infections. We emphasize the difficulties in achieving this goal due to numerous virulence factors important for the process of infection and the remarkable ability of these bacteria to avoid host defense mechanisms. We precede these considerations with a brief overview of the global necessitiy to intensify the use of vaccines against other pathogens as well, particularly in light of an impasse in antibiotic therapy.

Evaluation of Antimicrobial, Antioxidant, and Cytotoxic Activity of Phenolic Preparations of Diverse Composition, Obtained from (L.) A. Nelson Leaf and Twig Extracts.

Although the major components of various organs of sea buckthorn have been identified (particularly phenolic compounds), biological properties of many of these phytochemicals still remain poorly characterized. In this study, we focused on the chemical composition and biological activity of preparations that were obtained from sea buckthorn twigs and leaves. The objective was to investigate cytotoxicity of these preparations against human fibroblast line HFF-1, using MTT reduction assay, their anti- or pro-oxidant activities against the effects of a biological oxidant -HO/Fe-on human plasma lipids and proteins in vitro (using TBARS and carbonyl groups as the markers of oxidative stress).

An In Vitro Study of the Effect of Extracts on Key Processes in the Development of Staphylococcal Infections.

is still one of the leading causes of both hospital- and community-acquired infections. Due to the very high percentage of drug-resistant strains, the participation of drug-tolerant biofilms in pathological changes, and thus the limited number of effective antibiotics, there is an urgent need to search for alternative methods of prevention or treatment for infections. In the present study, biochemically characterized (HPLC/UPLC-QTOF-MS) acetonic, ethanolic, and water extracts from fruits and bark of L.

Phenolic and Non-Polar Fractions of the Extracts from Fruits, Leaves, and Twigs of (L.) A. Nelson-The Implications for Human Barrier Cells.

Biological potential of plant extracts are widely described. Because their oral or topical administration is usually recommended, intestinal mucous and skin are the first surfaces exposed to such preparations. Therefore, we asked the question whether phenolic and non-polar fractions of the extracts from fruits, twigs, and leaves of sea buckthorn ( (L.