[Risk factors for the early development of septic shock in patients with severe COVID-19].

Aim: In a retrospective study, we evaluated factors associated with the early development of septic shock in patients with severe COVID-19.

Materials And Methods: We collected medical records of the intensive care unit patients submitted by the local COVID-19 hospitals across Russia to the Federal Center for the Critical Care at the Sechenov First Moscow State Medical University (Sechenov University). Septic shock in crticially ill patients requiring mechanical ventilation was defined as a need in vasopressors to maintain blood pressure.

Metabolites Produced by Alkaliphiles with Potential Biotechnological Applications.

Alkaliphiles are a diverse group of relatively less known microorganisms living in alkaline environments. To thrive in alkaline environments, alkaliphiles require special adaptations. This adaptation may have evolved metabolites which can be useful for biotechnological processes or other applications.

Isolation and identification of cyclic lipopeptides from Paenibacillus ehimensis, strain IB-X-b.

Antifungal lipopeptides produced by an antagonistic bacterium, Paenibacillus ehimensis strain IB-X-b, were purified and analyzed. The acetone extract of the culture supernatant contained an antifungal amphiphilic fraction stainable with ninhydrin on thin layer chromatography. The fraction was further purified with water-methanol extraction followed by a chromatography on a C-support.

Wide-range antifungal antagonism of Paenibacillus ehimensis IB-X-b and its dependence on chitinase and beta-1,3-glucanase production.

Previously, we isolated a strain of Bacillus that had antifungal activity and produced lytic enzymes with fungicidal potential. In the present study, we identified the bacterium as Paenibacillus ehimensis and further explored its antifungal properties. In liquid co-cultivation assays, P.

Microbial dextran-hydrolyzing enzymes: fundamentals and applications.

Dextran is a chemically and physically complex polymer, breakdown of which is carried out by a variety of endo- and exodextranases. Enzymes in many groups can be classified as dextranases according to function: such enzymes include dextranhydrolases, glucodextranases, exoisomaltohydrolases, exoisomaltotriohydrases, and branched-dextran exo-1,2-alpha-glucosidases. Cycloisomalto-oligosaccharide glucanotransferase does not formally belong to the dextranases even though its side reaction produces hydrolyzed dextrans.

Purification and properties of extracellular dextranase from a Bacillus sp.

Bacterial strains in the genus Bacillus were isolated from natural soil samples and screened for production of extracellular dextranases (E.C.3.

[An insoluble colored substrate for dextranase assay].

An assay of dextranase (EC 3.2.1.