Search results for "Odio"

Front Cover: Electrochemical Synthesis of Fluorinated Orthoesters from 1,3‐Benzodioxoles (ChemistryOpen 9/2019)

2019

The Front Cover shows the robustness achieved by the installation of fluorinated alcohols on 1,3‐benzodioxoles, which appears like the shield of a knight protecting the obtained orthoesters against acids and bases. The simple protocol allows access to interesting compounds, whose lipophilicity is tremendously increased by the incorporation of fluorinated groups. This makes it possible to adjust the physicochemical properties of the biologically active 1,3‐benzodioxole motif. The surprisingly high stability against acids and bases gives rise to subsequent functionalizations or direct application in medicinal or agrochemistry. More information can be found in the Communication by J. L. Röckl …

Isomer-nonspecific action of dichlorodiphenyltrichloroethane on aryl hydrocarbon receptor and G-protein-coupled receptor 30 intracellular signaling i…

2014

Abstract Extended residual persistence of the pesticide dichlorodiphenyltrichloroethane (DDT) raises concerns about its long-term neurotoxic effects. Little is known, however, about DDT toxicity during the early stages of neural development. This study demonstrated that DDT-induced apoptosis of mouse embryonic neuronal cells is a caspase-9-, caspase-3-, and GSK-3β-dependent process, which involves p,p’ -DDT-specific impairment of classical ERs. It also provided evidence for DDT-isomer-nonspecific alterations of AhR- and GPR30-mediated intracellular signaling, including changes in the levels of the receptor and receptor-regulated mRNAs, and also changes in the protein levels of the receptors…

Sex ratio, reproductive mode and genetic diversity inTriops cancriformis

2009

SUMMARY 1. Aquatic invertebrates display a wide array of alternative reproductive modes from apomixis to hermaphroditism and cyclical parthenogenesis. These have important effects on genetic diversity and population structure. Populations of the ‘living fossil’ Triops cancriformis display a range of sex ratios, and various reproductive modes are thought to underlie this variation. Using sex ratio information and histological analyses European populations have been inferred to be gonochoric (with separate males and females), selfing hermaphroditic and androdioecious, a rare reproductive mode in which selfing hermaphrodites coexist with variable proportions of males. In addition, some populat…

SIMILARITIES IN BIOACCUMULATION PATTERNS OF POLYCHLORINATED DIBENZO-p-DIOXINS AND FURANS AND POLYCHLORINATED DIPHENYL ETHERS IN LABORATORY-EXPOSED OL…

2003

Sediment and chironomid samples were collected from a river in the vicinity of and downstream from a closed chlorophenol production plant, and they were analyzed for polychlorinated dibenzo-p-dioxins and furans (PCDD/F) and polychlorinated diphenyl ethers (PCDE). Bioaccumulation of these compounds from the sediments by the oligochaeta, Lumbriculus variegatus, and semipermeable membrane devices (SPMDs) was studied in a 28-d bioaccumulation test. The sum concentrations of PCDD/Fs and PCDEs in sediments varied spatially, peaking at the site below the production plant, but the congener composition remained fairly constant throughout the river. The sum concentrations of chironomids, oligochaetes…

Variable mycorrhizal benefits on the reproductive output ofGeranium sylvaticum, with special emphasis on the intermediate phenotype

2012

In several gynodioecious species, intermediate sex between female and hermaphrodite has been reported, but few studies have investigated fitness parameters of this intermediate phenotype. Here, we examined the interactions between plant sex and arbuscular mycorrhizal (AM) fungal species affecting the reproductive output of Geranium sylvaticum, a sexually polymorphic plant species with frequent intermediate sexes between females and hermaphrodites, using a common garden experiment. Flowering phenology, AM colonisation levels and several plant vegetative and reproductive parameters, including seed and pollen production, were measured. Differences among sexes were detected in flowering, fruit …

Comparison of thiol subproteome of the vent mussel Bathymodiolus azoricus from different Mid-Atlantic Ridge vent sites

2012

Deep-sea hydrothermal mussels Bathymodiolus azoricus live in the mixing zone where hydrothermal fluid mixes with bottom seawater, creating large gradients in the environmental conditions and are one of the most studied hydrothermal species as a model of adaptation to extreme conditions. Thiol proteins, i.e. proteins containing a thiol or sulfhydryl group (SH) play major roles in intracellular stress defense against reactive oxygen species (ROS) and are especially susceptible to oxidation. However, they are not particularly abundant, representing a small percentage of proteins in the total proteome and therefore are difficult to study by proteomic approaches. Activated thiol sepharose (ATS) …

Osservazioni sulla flora pteridologica della Sicilia

2011

Biogeographia vol. XXX - 2071 (Pubblicato il 23 dicembre 2011) La Biogeografia della Sici/ia Osservazioni sulla flora pteridologica della Sicilia ANGELO TROIA, VTNCENZO ILARDI, FRANCESCO MARIA RAIMONDO Universita di Palermo - Dz'partz'mem.‘0 a’z' Biologia Ambientale e Biodiversita, via Arckirafi 38, I—90]23 Palermo (Italy); e—mail: ange[0.tr0z'a @[z'ber0.z'2f Key words: flora, pteridophytes, Lycopodiophyta, Monilophyta, ferns, Sicily SUMMARY An updated checll—list of Sicilian pteridophytes is presented: in total, there are 55 taxa, including 49 ferns in the strict sense (“monilophytes”) and 6 lycopodiophytes. Aspleniaceae is the most represented family in terms of speci…

Kosovo, el naufragio

2000

La Deuda Odiosa

2011

Spanish Abstract: Un breve analisis sobre cuestiones relacionadas a las deudas contraidas por las naciones durante los gobiernos de facto. English Abstract: Should a State pay the debts contracted by a de facto Government? This is an essay that explores the world of the odious debts, trying to find the answers to the most recurrent questions that arise when the third world countries face the time to pay.

Guanine 6-O-Methylation Pattern within the Dioxin Responsive Element of theCYP1A1 Enhancer Shows Two Critical Guanines for AhR/ARNT Binding

2006

The core-recognition motif for TCDD-liganded AhR/ARNT complex of the dioxin-responsive element (DRE) contains four guanine residues, three on the antisense (5'-T T / A GCGTG-3') and one on the sense (5'-CACGC A / T A-3') strand. It has been reported that, in methylation-protection and methylation-interference assays, the TCDD-liganded AhR/ARNT contacts all four guanine residues. On the other hand, it is known that some anticancer drugs, and various environmental and workplace chemicals, including strongly human carcinogenic nitrosoamines, lead to the highly miscoding 6-O-methylation of guanine. In the present study, we have investigated whether specific methylation of guanine at the 6-O-pos…