a increased obviously when algae were exposed to 6 and 7 x 10(-7) mol/L of HQ for 72 h, which implied that the ratios of pigments changed in extreme

conditions to resist environmental stress. At the same time, HQ also induced the responses of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione S-transferase (GST) and non-enzymatic antioxidant reduced glutathione (GSH). selleck compound Additionally, flow cytometric assays showed that HQ stress altered the permeability of cell membrane and mitochondrial membrane potential in different degrees and HQ significantly inhibited the transcription of photosynthesis and respiration related genes. All these results

showed that HQ might have the potential as an algaecide to control marine microalgae. (C) 2013 Elsevier B.V. All rights reserved.”
“Poly(a-peptoid)s (N-substituted polyglycines) are interesting peptidomimetic biomaterials that have been discussed for many applications. Poly(beta-peptoid)s (N-substituted poly-beta-alanines), although equally intriguing, have received much less attention. Here we present results that suggest that while N-substituted beta-alanine N-carboxyanhydrides can undergo a living nucleophilic ring-opening polymerization, the solubility of poly(beta-peptoid)s can be very poor, which contributes to the limited accessibility using other synthetic approaches. The living character of the polymerization was utilized for the preparation of the first polymerized amphiphilic block copoly-beta-peptoid. Our results may open a new route towards CH5183284 mouse highly

defined functional poly(beta-peptoid)s which could represent biomaterials.”
“Salmonella Enteritidis (SE) is a genetically homogenous serovar, which makes optimal subtype discrimination crucial for epidemiological research. This study describes the development and evaluation of an optimized multiple-locus variable number tandem-repeat assay (MLVA) for characterization of SE. The typeability and discriminatory power of this MLVA was determined on a selected collection of 60 SE isolates and compared with pulsed-field gel electrophoresis (PFGE) using restriction enzymes XbaI, NotI, or SfiI. In addition, LY2835219 the estimated Wallace coefficient (W) was calculated to assess the congruence of the typing methods. Selection of epidemiologically unrelated isolates and more related isolates (originating from layer farms) was also based on the given phage type (PT). When targeting six loci, MLVA generated 16 profiles, while PFGE produced 10, 9, and 16 pulsotypes using XbaI, NotI, and SfiI, respectively, for the entire strain collection. For the epidemiologically unrelated isolates, MLVA had the highest discriminatory power and showed good discrimination between isolates from different layer farms and among isolates from the same layer farm.