A proposed typology of online hate crime

Hate offenders and those convicted of ‘radical’ or ‘extremist’ terror-related offences have a well-established presence online, and hate incidents which occur in the real world are increasingly being linked to online ‘virtual’ activities (INCAH, 2010). Building on psychological research and theory, in particular McDevitt, Levin, and Bennett (2002), and Gerstenfeld, Grant, and Chang (2003), this study has developed an original typology of online hate offending, dividing it into four distinct types of user: Browsers, Commentators, Activists, and Leaders. In a partial test of this typology, an online search was conducted for hate incidents relating to a single London borough over seven months. The search uncovered a wide variety of online incidents. Content and thematic analysis supported the division of the typology into four distinct superordinate themes. Amendments to the typology and recommendations are then discussed

Effects of ethanolic extract of datura stramonium leaves on the histomorphology and biochemical indices of liver and kidney functions in rats

Changes in histomorphology and some indices of liver and kidney functions were studied in rats administered doses of ethanolic extracts of Datura stramonium leaves. Methods: Four experimental groups of rats were respectively given oral doses of 50mg/kg, 100mg/kg and 200mg/kg of the extract daily for six weeks. Rats were sacrificed at the end of the six weeks and blood samples were collected for biochemical analysis. The livers and kidneys of the rates were harvested for histological studies. Results: The results showed that alanine transaminase (ALT) and bilirubin levels were significantly (P<0.05) higher in the groups administered 100mg/kg and 200mg/kg extracts than the control group. The extracts at similar doses also increased significantly (p<0.05) the serum urea and creatinine levels. Histological evaluation of the organs of localization revealed dose-dependent effects of treatment with the extract. Conclusion:The study has shown that Datura stramonium leaf extracts administered with 100 200mg/kg for six weeks caused liver and kidney damages in rats

PERP, an apoptosis-associated target of p53, is a novel member of the PMP-22/gas3 family

The p53 tumor suppressor activates either cell cycle arrest or apoptosis in response to cellular stress. Mouse embryo fibroblasts (MEFs) provide a powerful primary cell system to study both p53-dependent pathways. Specifically, in response to DNA damage, MEFs undergo p53-dependent G(1) arrest, whereas MEFs expressing the adenovirus E1A oncoprotein undergo p53-dependent apoptosis. As the p53-dependent apoptosis pathway is not well understood, we sought to identify apoptosis-specific p53 target genes using a subtractive cloning strategy. Here, we describe the characterization of a gene identified in this screen, PERP, which is expressed in a p53-dependent manner and at high levels in apoptotic cells compared with G(1)-arrested cells. PERP induction is linked to p53-dependent apoptosis, including in response to E2F-1-driven hyperproliferation. Furthermore, analysis of the PERP promoter suggests that PERP is directly activated by p53. PERP shows sequence similarity to the PMP-22/gas3 tetraspan membrane protein implicated in hereditary human neuropathies such as Charcot-Marie-Tooth, Like PMP-22/gas3, PERP is a plasma membrane protein, and importantly, its expression causes cell death in fibroblasts. Taken together, these data suggest that PERP is a novel effector of p59-dependent apoptosis

Use of Preclinical Models to Improve Treatment of Retinoblastoma

Dyer and colleagues examine the most promising preclinical models that recapitulate the molecular, genetic, and cellular features of retinoblastoma

Low energy diet and intracranial pressure in women with idiopathic intracranial hypertension: prospective cohort study

Objective To observe intracranial pressure in women with idiopathic intracranial hypertension who follow a low energy diet

Tissue of origin dictates branched-chain amino acid metabolism in mutant Kras-driven cancers

Tumor genetics guides patient selection for many new therapies, and cell culture studies have demonstrated that specific mutations can promote metabolic phenotypes. However, whether tissue context defines cancer dependence on specific metabolic pathways is unknown. Kras activation and Trp53 deletion in the pancreas or the lung result in pancreatic ductal adenocarinoma (PDAC) or non-small cell lung carcinoma (NSCLC), respectively, but despite the same initiating events, these tumors use branched-chain amino acids (BCAAs) differently. NSCLC tumors incorporate free BCAAs into tissue protein and use BCAAs as a nitrogen source, whereas PDAC tumors have decreased BCAA uptake. These differences are reflected in expression levels of BCAA catabolic enzymes in both mice and humans. Loss of Bcat1 and Bcat2, the enzymes responsible for BCAA use, impairs NSCLC tumor formation, but these enzymes are not required for PDAC tumor formation, arguing that tissue of origin is an important determinant of how cancers satisfy their metabolic requirements.National Institutes of Health (U.S.) (Grant F30CA183474)National Institutes of Health (U.S.) (Grant T32GM007753

European Financial Market Integration: A Closer Look at Government Bonds in Eurozone Countries

The European Union made a number of steps not least of them the introduction of a common currency to foster the integration of the European financial markets. A number of papers have tried to gauge the degree of integration for various financial markets looking at the convergence of interest rates. A common finding is that government bond markets are quite well integrated. In this paper stochastic Kernel density estimates are used to take a closer look at the dynamics that drive the process of interest rate convergence. The main finding is that countries with large initial deviations from the mean interest rate do indeed converge. Interestingly the candidates least suspected namely the countries initially with interest rates at the mean level show a pattern of slight divergence

Desalination using electrodialysis as a function of voltage and salt concentration

Presented at EuroMed 2006 conference on Desalination Strategies in South Mediterranean Countries: Cooperation between Mediterranean Countries of Europe and the Southern Rim of the Mediterranean. Sponsored by the European Desalination Society and the University of Montpellier II, Montpellier, France, 21–25 May 2006.Electrodialysis is a process that competes with reverse osmosis for desalination and the removal of specific inorganic contaminants. Desalination experiments were carried out on aqueous solutions containing 5 and 10 g/L NaCl to determine the optimum operating conditions of an electrodialysis (ED) system. Further desalination of aqueous solutions containing 1, 5, 10, 20, 25 and 35 g/L NaCl at an optimum applied voltage of 12 V was conducted to determine the influence of initial salt concentration on the desalination process. The possibility of removing fluoride and nitrate from a groundwater containing about 4.3 g/L NaCl, as well as 2.8 and 31.3 mg/L of fluoride and nitrate respectively, as a function of applied voltage was also investigated. A laboratory electrodialysis stack containing seven cation-exchange membranes and six anion-exchange membranes of 56 cm2 effective area was used. From these studies it is demonstrated that electrodialysis is an effective method for the removal of fluoride and nitrate from brackish groundwater and that real groundwater showed a slower desalination behaviour. Fouling of the membranes was observed

Sustained proliferation in cancer: mechanisms and novel therapeutic targets

Proliferation is an important part of cancer development and progression. This is manifest by altered expression and/or activity of cell cycle related proteins. Constitutive activation of many signal transduction pathways also stimulates cell growth. Early steps in tumor development are associated with a fibrogenic response and the development of a hypoxic environment which favors the survival and proliferation of cancer stem cells. Part of the survival strategy of cancer stem cells may manifested by alterations in cell metabolism. Once tumors appear, growth and metastasis may be supported by overproduction of appropriate hormones (in hormonally dependent cancers), by promoting angiogenesis, by undergoing epithelial to mesenchymal transition, by triggering autophagy, and by taking cues from surrounding stromal cells. A number of natural compounds (e.g., curcumin, resveratrol, indole-3-carbinol, brassinin, sulforaphane, epigallocatechin-3-gallate, genistein, ellagitannins, lycopene and quercetin) have been found to inhibit one or more pathways that contribute to proliferation (e.g., hypoxia inducible factor 1, nuclear factor kappa B, phosphoinositide 3 kinase/Akt, insulin-like growth factor receptor 1, Wnt, cell cycle associated proteins, as well as androgen and estrogen receptor signaling). These data, in combination with bioinformatics analyses, will be very important for identifying signaling pathways and molecular targets that may provide early diagnostic markers and/or critical targets for the development of new drugs or drug combinations that block tumor formation and progression