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Asp
Terms modified by Asp Selected AbstractsProtein kinase A RII-like (R2D2) proteins exhibit differential localization and AKAP interaction,CYTOSKELETON, Issue 7 2008Amy E. Hanlon Newell Abstract A-kinase anchoring proteins (AKAPs) bind to protein kinase A (PKA) via an amphipathic helix domain that interacts with a dimerization/docking domain on the regulatory (R) subunit of PKA. Four other mammalian proteins (ROPN1, ASP, SP17, and CABYR) also contain a highly conserved RII dimerization/docking (R2D2) domain, suggesting all four proteins may interact with all AKAPs in a manner similar to RII. All four of these proteins were originally detected in the flagellum of mammalian sperm. In this report, we demonstrate that all four R2D2 proteins are expressed in a wide variety of tissues and three of the proteins SP17, CABYR, and ASP are located in motile cilia of human bronchus and fallopian tubes. In addition, we detect SP17 in primary cilia. We also provide evidence that ROPN1 and ASP bind to a variety of AKAPs and this interaction can be disrupted with anchoring inhibitor peptides. The interaction of SP17 and CABYR with AKAPs appears to be much more limited. None of the R2D2 proteins appears to bind cAMP, a fundamental characteristic of the regulatory subunits of PKA. These observations suggest that R2D2 proteins utilize docking interactions with AKAPs to accomplish their function of regulating cilia and flagella. Based on location, affinity for AKAPs and lack of affinity for cAMP, it appears that each R2D2 protein has a unique role in this process. Cell Motil. Cytoskeleton 2008. © 2008 Wiley-Liss, Inc. [source] Multiple forms of genetic instability within a 2-Mb chromosomal segment of 3q26.3,q27 are associated with development of esophageal adenocarcinomaGENES, CHROMOSOMES AND CANCER, Issue 4 2006Lin Lin Gene amplification is one of the mechanisms to activate oncogenes in many cancers, including esophageal adenocarcinoma (EA). In the present study, we used two-dimensional restriction landmark genome scanning to clone a NotI/DpnII fragment that showed increased genomic dosage in 1 of 44 EAs analyzed. This fragment maps to 3q26.3,q27, and subsequent experiments identified two intrachromosomal amplicons within a 10-Mb DNA segment in 7 of 75 (9%) EAs. The distal amplified-core region maps centromeric to the PIK3CA locus, and a microsatellite (D3S1754) within this region exhibited significant instability (MSI), in stark contrast to the genomewide microsatellite stability found in EA. D3S1754-MSI arises in premalignant Barrett's dysplastic cells and preceded amplification of the nascent MSI allele in the corresponding EA. Seven ESTs within the amplified-core were overexpressed in amplicon-containing EAs. One of these, EST AW513672, represents a chimeric transcript that initiated from an antisense promoter sequence in the 5,UTR of a full-length LINE-1 element (L1-5,ASP). Similar chimeric transcripts encoding portions of the MET oncogene and the BCAS3 gene also were overexpressed in EAs, suggesting that L1-5,ASP activation may occur at a broad level in primary EAs. Thus, the fine dissection of a 2-Mb amplified DNA segment in 3q26.3,q27 in EA revealed multiple genetic alterations that had occurred sequentially and/or concurrently during EA development. This article has supplementary material, available at http://www.interscience.wiley.com/jpages/1045-2257/suppmat. © 2005 Wiley-Liss, Inc. [source] Simultaneous localization of two linked disease susceptibility genesGENETIC EPIDEMIOLOGY, Issue 1 2005Joanna M. Biernacka Abstract For diseases with complex genetic etiology, more than one susceptibility gene may exist in a single chromosomal region. Extending the work of Liang et al. ([2001] Hum. Hered. 51:64,78), we developed a method for simultaneous localization of two susceptibility genes in one region. We derived an expression for expected allele sharing of an affected sib pair (ASP) at each point across a chromosomal segment containing two susceptibility genes. Using generalized estimating equations (GEE), we developed an algorithm that uses marker identical-by-descent (IBD) sharing in affected sib pairs to simultaneously estimate the locations of the two genes and the mean IBD sharing in ASPs at these two disease loci. Confidence intervals for gene locations can be constructed based on large sample approximations. Application of the described methods to data from a genome scan for type 1 diabetes (Mein et al. [1998] Nat. Genet. 19:297,300) yielded estimates of two putative disease gene locations on chromosome 6, approximately 20 cM apart. Properties of the estimators, including bias, precision, and confidence interval coverage, were studied by simulation for a range of genetic models. The simulations demonstrated that the proposed method can improve disease gene localization and aid in resolving large peaks when two disease genes are present in one chromosomal region. Joint localization of two disease genes improves with increased excess allele sharing at the disease gene loci, increased distance between the disease genes, and increased number of affected sib pairs in the sample. Genet. Epidemiol. © 2004 Wiley-Liss, Inc. [source] Application of Nanostructured ASP Precursors for Processing CaCuMn6O12 Colossal Magnetoresistance CeramicsINTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, Issue 4 2006Anastasia E. Chekanova Nanostructured precursors prepared by ultrasonic aerosol spray pyrolisys at 750,950°C in air were applied for the first time to obtain Ca(Cu,Mn)7O12 colossal magnetoresistance ceramics with a unique submicron necked-grain microstructure. It was observed that a high contribution of intergrain tunneling magnetoresistance results in a 10,20% difference in functional properties as dependent on morphological features of hollow precursor microspheres ASP processed at a given temperature. [source] Abstracts: New alternatives to cosmetics preservationINTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Issue 5 2010S. Papageorgiou pp. 107,123 This work was partially presented at the 7th Joint Meeting of AFRP, ASP, GA, PSE and SIF, Athens, Greece, and at the XIIIth COSMODERM Joint Meeting of ESCAD and the Hellenic Society of Dermatology and Venerology, Athens, Greece. In recent years, there is a considerable interest in the development of preservative-free or self-preserving cosmetics. The aim of our work was to develop new cosmetic formulations by replacing chemical preservatives with ingredients with antimicrobial properties that are not legislated as preservatives according to Annex VI of Commission Directive 76/768/EEC. This paper describes the preservative efficacy of the well-known antimicrobial extracts of Lonicera caprifoleum and Lonicera japonica in combination with glyceryl caprylate and/or levulinic acid, p-anisic acid, and ethanol. We prepared a series of acidic (pH = 5.5) aqueous and O/W formulations, i.e., tonic lotion, shampoo, shower gel, conditioning cream, anticellulite cream, cleansing milk and peeling cream, containing (0.2% w/w) Lonicera extracts, alone in the case of tonic lotion and in combination with (1% w/w) glyceryl caprylate in the other products, and we performed challenge tests according to the European Pharmacopoeia procedures and criteria. Formulations such as shampoo, shower gel, and conditioning cream fulfilled criterion A, while tonic lotion, anticellulite cream, cleansing milk, and peeling cream fulfilled criterion B, in regard to contamination from A. niger. Furthermore, we evaluated the efficacy of the antimicrobial systems in two states of use: the intact product and after 3 weeks of consumer use. The results showed that A. niger was also detected during use by consumers in the products that satisfied only criterion B in challenge tests. The addition of antimicrobial fragrance ingredients such (,0.3% w/w) levulinic acid or (0.1% w/w) p-anisic acid and/or (5% w/w) ethanol afforded products that met criterion A in challenge tests and were also microbiologically safe during use. The small quantity (5% w/w) of ethanol gave an important assistance in order to boost the self-preserving system and to produce stable and safe products. [source] Sexual reproduction of scleractinian corals in public aquariums: current status and future perspectivesINTERNATIONAL ZOO YEARBOOK, Issue 1 2007D. PETERSEN A multiple-choice questionnaire was distributed, mainly via the list servers of the EUAC (European Union of Aquarium Curators) Coral ASP (Animal Sustainability Program) and AquaticInfo, to evaluate the potential of today's aquariums for the captive breeding of scleractinian corals. Sixteen (including the temperate coral Astroides calycularis) of, in total, 24 species (nine families) were recorded as showing reproductive behaviour that could establish an F1 generation. Broadcast spawners (13 species) reproduced mainly in open systems under natural light conditions (in all cases natural moonlight exposure), whereas brooders (11 species) showed less sensitivity towards certain environmental factors known to trigger reproduction in field populations (here moonlight and temperature fluctuations). Except for a few recruits of Galaxea fascicularis and Echinopora lamellosa maintained in a 750 000 litre system, recruits of broadcast spawners could be exclusively obtained by manipulating fertilization and settlement. Brooding corals established generally less than 100 recruits if settlement was not enhanced experimentally. When reproduction was manipulated, it enhanced reproductive success, in most cases to above 100 recruits. We assume that more species, especially brooders, might reproduce in public aquariums without being noticed by the staff owing to the lack of recruitment and of experimental design (larval collection). This study illustrates the great potential for public aquariums to reproduce corals sexually. However, more investigation is necessary to optimize reproductive success and possibly to broaden the spectrum of species reproduced in public aquariums. [source] How costly is clutch formation in the Audouin's Gull Larus audouinii?JOURNAL OF AVIAN BIOLOGY, Issue 4 2000Xavier Ruiz During the Audouin's Gull's breeding season at the Ebro Delta in 1993, 24 fresh eggs from eight three-egg clutches (modal clutch-size) were collected at the peak of the laying period. Eggs were processed to obtain formalin-fixed yolks, which were halved and stained using the potassium dichromate method. Digitized images of the yolks were examined to assess the daily rates of yolk deposition. We used these data in combination with egg compositional analysis to build a model of energy demands during the formation of an average clutch in Audouin's Gull. To show how the different parameters of clutch formation affect the daily energy investment peak, we performed a simulation analysis in which the rapid yolk development (RYD) period, the follicle triggering interval (FTI), the laying interval (LI) and the albumen synthesis period (ASP) were allowed to vary simultaneously. In our sample, the mean RYD period was seven days with a range from six to eight days. There were no significant differences in yolk volume among eggs in a clutch, but albumen volume was significantly smaller in third eggs. According to our model the albumen synthesis of the a-egg coincides with the energy demand peak for clutch formation. This peak represents an increase by ca. 42% in female energy requirements. Values obtained from the simulation analysis showed that only the ASP of the a-egg and the RYD durations of the second and third follicles produced noticeable reductions in peak energy investment. We predict that in gulls, whose laying intervals seem to be kept constant, significant increases of the durations of the RYD periods of second and third eggs, or even significant reductions of yolk size of these eggs, may operate simultaneously to match the energy demands during clutch formation to the prevailing food conditions. [source] Chylomicron accelerates C3 tick-over by regulating the role of Factor H, leading to overproduction of acylation stimulating proteinJOURNAL OF CLINICAL LABORATORY ANALYSIS, Issue 1 2007Takayuki Fujita Abstract Acylation stimulating protein (ASP) is a fragment of the third component of complement (C3) that is generated in the presence of chylomicron, and plays a role in the synthesis of triacylglycerol by transporting free fatty acids into adipocytes. However, the precise mechanism of ASP generation, especially the role of chylomicron in ASP generation, is unknown. We examined the mechanism through which chylomicron induces ASP generation. Ultracentrifugationally separated chylomicron was incubated with normal human serum (NHS) under various conditions, and the amounts of complement activation products and ASP in the incubation mixture were determined by enzyme-linked immunosorbent assay (ELISA). Upon incubation of NHS with various amounts of chylomicron for 120,min, ASP was generated in a dose-dependent manner. The time course of the production of ASP was similar to the time course of the C3 tick-over phenomenon that occurred by depletion of factor H from the serum. The complement activation induced by chylomicron was different from the usual complement activation that occurs under the regulation of factor H and factor I with respect to the time course and the amount of ASP produced. Our results indicate that chylomicron accelerates C3 tick-over by regulating the role of factor H, leading to the overproduction of ASP. J. Clin. Lab. Anal. 21:14,23, 2007. © 2007 Wiley-Liss, Inc. [source] Comparison of implicit solvent models for the simulation of protein,surface interactionsJOURNAL OF COMPUTATIONAL CHEMISTRY, Issue 16 2006Yu Sun Abstract Empirical force field-based molecular simulations can provide valuable atomistic-level insights into protein,surface interactions in aqueous solution. While the implicit treatment of solvation effects is desired as a means of improving simulation efficiency, existing implicit solvent models were primarily developed for the simulation of peptide or protein behavior in solution alone, and thus may not be appropriate for protein interactions with synthetic material surfaces. The objective of this research was to calculate the change in free energy as a function of surface,separation distance for peptide,surface interactions using different empirical force field-based implicit solvation models (ACE, ASP, EEF1, and RDIE with the CHARMM 19 force field), and to compare these results with the same calculations conducted using density functional theory (DFT) combined with the self-consistent reaction field (SCRF) implicit solvation model. These comparisons show that distinctly different types of behavior are predicted with each implicit solvation method, with ACE providing the best overall agreement with DFT/SCRF calculations. These results also identify areas where ACE is in need of improvement for this application and provide a basis for subsequent parameter refinement. © 2006 Wiley Periodicals, Inc. J Comput Chem, 2006 [source] Mechanisms of glutamate release elicited in rat cerebrocortical nerve endings by ,pathologically' elevated extraterminal K+ concentrationsJOURNAL OF NEUROCHEMISTRY, Issue 3 2007Luca Raiteri Abstract Extracellular [K+] can increase during some pathological conditions, resulting into excessive glutamate release through multiple mechanisms. We here investigate the overflow of [3H]d -aspartate ([3H] d -ASP) and of endogenous glutamate elicited by increasing [K+] from purified rat cerebrocortical synaptosomes. Depolarization with [K+] , 15 mmol/L provoked [3H] d -ASP and glutamate overflows almost totally dependent on external Ca2+. Consistent with release by exocytosis, the overflow of [3H] d -ASP evoked by 12 mmol/L K+ was sensitive to clostridial toxins. The overflows evoked by 35/50 mmol/L K+ remained external Ca2+ -dependent by more than 50%. The Ca2+ -independent components of the [3H] d -ASP overflows evoked by [K+] > 15 mmol/L were prevented by the glutamate transporter inhibitors dl - threo -beta-benzyloxyaspartate (dl -TBOA) and dihydrokainate. Differently, the overflows of endogenous glutamate provoked by [K+] > 15 mmol/L were insensitive to both inhibitors; the external Ca2+ -independent glutamate overflow caused by 50 mmol/L KCl was prevented by bafilomycin, by chelating intraterminal Ca2+, by blocking the mitochondrial Na+/Ca2+ exchanger and, for a small portion, by blocking anion channels. In contrast to purified synaptosomes, the 50 mmol/L K+ -evoked release of endogenous glutamate or [3H]D-ASP was inhibited by dl -TBOA in crude synaptosomes; moreover, it was external Ca2+ -insensitive and blocked by dl -TBOA in purified gliosomes, suggesting that carrier-mediated release of endogenous glutamate provoked by excessive [K+] in CNS tissues largely originates from glia. [source] DOMOIC ACID PRODUCTION By PSEUDO-NITZSCHIA SERIATA (BACILLARIOPHYCEAE) IN SCOTTISH WATERS,JOURNAL OF PHYCOLOGY, Issue 4 2004Johanna Fehling In 1999, a 49,000 km2 area in western Scottish waters was closed to shellfish harvesting due to the amnesic shellfish poisoning (ASP) toxin domoic acid (DA). The only previously confirmed DA producer identified had been Pseudo-nitzschia australis Frenguelli. The toxin has appeared every year since and has led to more harvesting closures. We isolated and cultured two strains of Pseudo-nitzschia seriata f. seriata (P. T. Cleve) H. Peragallo from western Scottish waters in 2001 and 2002. They were identified using TEM analysis of their morphological fine structure and sequencing of the internal transcribed spacer (ITS)1, 5.8S, ITS2, and partial large subunit (LSU) rDNA. The morphology of the Scottish P. seriata f. seriata strains differed slightly, for example, in the number of poroid rows, from descriptions in identification keys. Comparison of P. seriata sequences with those of two co-occurring Pseudo-nitzschia australis isolates showed an overall divergence of only 0.012. Sequence divergence between both species was highest in the ITS1 region (0.036). Combined morphological and genetic approaches are needed to identify closely related Pseudo-nitzschia species. The P. seriata strains grew successfully at 15°C, suggesting that although seen as a psychrophilic species, it may also occur at higher water temperatures. All isolates produced DA in stationary phase (measured on day 25): 0.16,0.23 pg DA·cell,1 in P. seriata and 0.15,1.68 pg DA·cell,1 in P. australis. Our study is the first to identify P. seriata f. seriata as a DA producer in Scottish waters and indicates that at least it and P. australis can be responsible for ASP toxicity in that region. [source] 41 Incidence of paralytic shellfish toxin in bivalve mollusc tissue from the oregon coastJOURNAL OF PHYCOLOGY, Issue 2003R. C. Everroad Saxitoxin and domoic acid sequestration by bivalve molluscs occurs periodically along the Oregon coast, presumably as a result of harmful algal blooms (HABs). Since 1958 and more continuously since 1979, the Oregon Shellfish Program (OSP) has assayed toxin levels in these molluscs as part of a monitoring program for paralytic (PSP) and amnesic (ASP) shellfish poisoning. We have created a working data base for all PSP sampling by the OSP between 1958 and 2001 and have examined the data for spatial and temporal trends in the appearance of toxin in shellfish, amount of toxin, and apparent duration of toxic events. In this report, we examine the data from the five stations with the longest record of continuous sampling (1979,2000) for evidence of correlation with El Niño events, upwelling, and/or a pattern of increasing frequency or intensity of toxic events. We also compare the pattern of appearance of toxin at open coast stations with the timing of first appearance of toxin in shellfish at adjacent estuarine stations. This is an important analysis because, in Oregon, shellfish closures due to PSP occur frequently in mussel beds on the open coast and the source of toxin-producing organisms is unknown. [source] THE CYANOTOXINS-BIOACTIVE METABOLITES OF CYANOBACTERIA: OCCURRENCE, ECOLOGICAL ROLE, TAXONOMIC CONCERNS AND EFFECTS ON HUMANSJOURNAL OF PHYCOLOGY, Issue 2001Article first published online: 24 SEP 200 Carmichael, W. W. Department of Biological Sciences, Wright State University, Dayton, Ohio 45435 USA Cyanobacteria toxins (cyanotoxins) include cytotoxins and biotoxins with cytotoxins including about 60 compounds ranging from phytoalexins to animicrobials to enzyme inhibitors to compounds that can reverse multidrug resistance. Producer organisms include marine/brackish water Cystoseira, Hormothamnin, Lyngbya, Nodularia and Synechocystis, and the freshwater/terrestrial genera Anabaena, Dichotrix, Fischerella, Hapalosiphon, Lyngbya, Microcystis, Nostoc, Oscillatoria, Planktothrix, Phormidium, Schizothrix, Scytonema, Spirulina, Stigonema and Symploca. Since many of these compounds have been identified, not during ecological studies, but during drug discovery investigations, their ecological role is only speculative. Biotoxins are responsible for acute lethal, acute, chronic and sub-chronic poisonings of wild/domestic animals and humans. They include the neurotoxins; anatoxin-a, anatoxin-a(s) and saxitoxins plus the hepatotoxins; microcystins, nodularins and cylindrospermopsin. These compounds are included when referencing harmful algal blooms (HAB's) such as the more predominate marine PSP (paralytic shellfish poisoning), DSP (diarrhetic shellfish poisoning), NSP (neurotoxic shellfish poisoning), ASP (amnesic shellfish poisoning) and EAS (estuary associated syndrome). The CTP (cyanobacteria toxin poisoning) organisms occur in freshwater lakes, ponds, rivers and reservoirs throughout the world. Organisms responsible for CTP's are Anabaena, Aphanizomenon, Cylindrosperm- opsis, Microcystis, Nodularia, Nostoc Oscillatoria (Planktothrix), Trichodesmium and certain picoplanktic genera. Concern for animal and human health impairments arises from animal poisonings, associated with cyanobacteria waterblooms, beginning with the later part of the 1800's. It was not until the 1950's that we began to understand that cyanobacteria could indeed produce highly toxic compounds. A recent 1998 compilation of all available information on toxic cyanobacteria was published by the World Health Organization. This increasing focus on the role of cyanobacteria metabolites in chemical ecology, drug discovery and toxinology has placed new importance on using correct taxonomy for communication of responsible organisms. [source] Decision-Making Biases, Antisocial Personality, and Early-Onset AlcoholismALCOHOLISM, Issue 7 2000Carlos A. Mazas Background: Disinhibited, antisocial traits increase the risk for early-onset alcoholism. Research also suggests that decision biases which favor immediate large rewards regardless of long-term consequences may be important mechanisms associated with the biological substrates of antisocial traits. This study tested the hypothesis that early-onset alcoholism with antisocial personality (ASP) would be associated with favoring immediate larger rewards despite their being associated with long-term losses. Methods: Twenty-seven early-onset alcoholics with and without a diagnosis of ASP, eight subjects with ASP but no alcohol dependence, and 32 controls were tested on a task that manipulated the magnitude of immediate rewards and the magnitude of long-term punishments. The sample was recruited from the community via advertisements. Results: Compared with subjects without ASP, subjects with ASP favored larger immediate rewards despite long-term losses regardless of alcohol dependence; however, they learned to shift their decisions in a more advantageous direction over time. A disadvantageous decision bias also was associated with drinking greater quantities of alcohol and having a lower IQ. Conclusions: This study suggests that ASP in a young adult noninstitutionalized sample was associated with a pattern of disadvantageous decision making similar to that observed in patients with antisocial behavioral characteristics associated with lesions in the ventromedial frontal cortex. The data also suggest that this pattern of disadvantageous decision making is associated with consuming larger quantities of alcohol but not consuming alcohol more frequently. [source] Automatic slice positioning (ASP) for passive real-time tracking of interventional devices using projection-reconstruction imaging with echo-dephasing (PRIDE)MAGNETIC RESONANCE IN MEDICINE, Issue 4 2009S. Patil Abstract A novel and fast approach for passive real-time tracking of interventional devices using paramagnetic markers, termed "projection-reconstruction imaging with echo-dephasing" (PRIDE) is presented. PRIDE is based on the acquisition of echo-dephased projections along all three physical axes. Dephasing is preferably set to 4, within each projection ensuring that background tissues do not contribute to signal formation and thus appear heavily suppressed. However, within the close vicinity of the paramagnetic marker, local gradient fields compensate for the intrinsic dephasing to form an echo. Successful localization of the paramagnetic marker with PRIDE is demonstrated in vitro and in vivo in the presence of different types of off-resonance (air/tissue interfaces, main magnetic field inhomogeneities, etc). In order to utilize the PRIDE sequence for vascular interventional applications, it was interleaved with balanced steady-state free precession (bSSFP) to provide positional updates to the imaged slice using a dedicated real-time feedback link. Active slice positioning (ASP) with PRIDE is demonstrated in vitro, requiring approximately 20 ms for the positional update to the imaging sequence, comparable to existing active tracking methods. Magn Reson Med, 2009. © 2009 Wiley-Liss, Inc. [source] A Study of CDK2 Inhibitors Using a Novel 3D-QSAR Method Exploiting Receptor FlexibilityMOLECULAR INFORMATICS, Issue 8 2009Michael Abstract A new 3D-QSAR method based on the novel molecular dynamics methodology, Active Site Pressurization (ASP), has been validated using two cyclin-dependent kinase 2 data sets containing 65 purines and 91 oxindoles. ASP allows the construction of cavity casts that represent the maximal energetically feasible 3D distortion of protein binding sites potentially achievable by induced fit upon binding of ligands. The ASP-QSAR method entails many components of traditional 3D-QSAR strategies but additionally correlates the biological activity of ligand sets with features of ASP-derived binding site cavity casts, thus taking target protein flexibility into account implicitly. Both of the data sets used to validate the ASP-QSAR method resulted in QSAR models that were of exceptional quality and predictivity. A non-cross-validated variance coefficient (R2) between 0.959 and 0.99 and a cross-validated variance coefficient (Q2) of between 0.927 and 0.929 were obtained for these ASP-QSAR models. [source] DIADEM: implementation of a comprehensive disease management programme for type 2 diabetesPRACTICAL DIABETES INTERNATIONAL (INCORPORATING CARDIABETES), Issue 3 2005Dr S Luzio PhD Clinical Trials Manager Abstract The purpose of the study was to evaluate the feasibility and acceptance of an IT-based diabetes disease management programme. The study was performed at two test sites in Aachen (Germany) and Cardiff (UK) including 166 and 137 patients respectively. The study focused on the technical feasibility of a web-based communication platform and its acceptance among medical professionals, the patient acceptance of entering self-measured data via phone and of service-centre support, the acceptance of implementing quality management measures, and the effects of all these measures on glycaemic control. The maximum programme duration was four months at Aachen and six months at Cardiff. The main outcomes were utilisation data, and satisfaction of both patients and physicians with the different components of DIADEM. HbA1c concentrations improved significantly from 7.1±1.0% to 6.8±1.1% in Aachen and from 7.7±1.0% to 7.1±1.1% in Cardiff (each p<0.001). The platform as a hosted ASP (application service provider) solution was accessible using a standard Internet enabled PC. Following training, a fast and efficient introduction of the software to professional users was obtained. Patient acceptance was very high both in terms of utilisation of the system (13 000 data entries performed during 6800 calls) and in terms of patient satisfaction assessed by a patient survey (93% very satisfied or satisfied). Patients strongly preferred a DTMF (dual tone multi-frequency) interface entering data by telephone key-pad rather than voice recognition. This study showed that an IT-based diabetes disease management service improved glycaemic control in patients with type 2 diabetes and could find acceptance by patients and professionals if convenient pathways for data entry and transmission are provided. Copyright © 2005 John Wiley & Sons, Ltd. [source] Field primatology of today: current ethical issuesAMERICAN JOURNAL OF PRIMATOLOGY, Issue 9 2010K.C. MacKinnon Abstract As members of professional organizations such as American Society of Primatologists (ASP) and the International Primatological Society (IPS), primatologists must adhere to a set of nonhuman primate-focused principles outlined in resolutions and policy statements on, for example, the ethical treatment of nonhuman primates. Those of us that work in the field must also address issues such as the protection of primate health in the wild and the conservation of wild primate populations. Moreover, we increasingly find ourselves in complex situations where we must balance human and nonhuman primate needs and interests. The selection of commentary pieces in this edition of the American Journal of Primatology originated from presentations given in the symposium, Field Primatology of Today: Navigating the Ethical Landscape, held at the 32nd Annual Meeting of the American Society of Primatologists (ASP) in September 2009. The goals of that symposium and these resulting commentary pieces are threefold: (1) to revive a discussion of key contemporary ethical issues faced by field primatologists, (2) to highlight the need for centrally placed ethical considerations in various facets of our professional lives, particularly research and teaching, and (3) to consider what a comprehensive ethical code that addresses all of these issues might look like. Am. J. Primatol. 72:749,753, 2010. © 2010 Wiley-Liss, Inc. [source] Improved model of secondary clarifier in A2/O processASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, Issue 4 2009Ma Longhua Abstract The complex behavior of the secondary clarifier and its great importance in the successful operation of the activated sludge process (ASP) have made the settling process a major issue for researchers working in the field of mathematical modeling. So, a precise model of the secondary clarifier can describe the actual behavior of a sewage plant better. But in ASM2, the solid/liquid separation in a secondary clarifier, which is highly nonlinear, is not considered. The solid/liquid separation affects not only the biological reaction but also the quality of the effluent. In this paper an improved secondary clarifier model based on a one-dimensional settler model is established in terms of the solid flux concept and a mass balance. Through some given assumptions, a model of A2/O process including secondary clarifier is built, and then simulated. Copyright © 2009 Curtin University of Technology and John Wiley & Sons, Ltd. [source] Thromboembolism in children with acute lymphoblastic leukaemia treated on Dana-Farber Cancer Institute protocols: effect of age and risk stratification of diseaseBRITISH JOURNAL OF HAEMATOLOGY, Issue 6 2005Uma H. Athale Summary Children with acute lymphoblastic leukaemia (ALL) are at increased risk for thromboembolism (TE). Identification of a susceptible population is crucial for effective thromboprophylaxis. However, the risk factors for ALL-associated TE are unclear. Concomitant asparaginase (ASP) and steroid therapy has been shown to increase the incidence of TE. Dana-Farber Cancer Institute (DFCI)-ALL protocols use a combination of ASP and steroids during the postinduction intensification phase when high-risk (HR) patients receive thrice the steroid-dose given to standard-risk (SR) patients. We studied prospectively assembled cohorts of children treated on two consecutive DFCI-ALL protocols to define the risk factors for symptomatic TE. Ten (11%) of 91 patients developed symptomatic TE; eight (seven HR) during intensification. Seven (44%) of 16 older patients (,10 years) compared with three of 75 (4%) younger patients developed TE (P < 0·0001). Nine of 35 (26%) HR and one of 56 (2%) SR patients developed TE (P = 0·0006). Gender, ALL-immunophenotype, steroid-type or ASP dosing schedule did not alter the risk but older age and HR-disease were factors predisposing to TE associated with DFCI-ALL protocols. Age-related risk may partly reflect the effect of ALL-risk stratification. Higher dose steroids combined with ASP may lead to an increased risk of TE in HR patients. [source] A prospective cohort study determining the prevalence of thrombotic events in children with acute lymphoblastic leukemia and a central venous line who are treated with L-asparaginase,CANCER, Issue 2 2003Results of the Prophylactic Antithrombin Replacement in Kids with Acute Lymphoblastic Leukemia Treated with Asparaginase (PARKAA) Study Abstract BACKGROUND Thrombotic events (TEs) are serious secondary complications in children with acute lymphoblastic leukemia (ALL) who receive L-asparaginase (ASP) therapy; however, the prevalence of TEs has not been established. The primary objective of the Prophylactic Antithrombin Replacement in Kids with Acute Lymphoblastic Leukemia Treated with Asparaginase (PARKAA) Study was to determine the prevalence of TEs. The secondary objective was to detect any association of TEs with the presence of congenital or acquired prothrombotic disorders. METHODS Children with ALL were screened for TEs at the end of ASP treatment using bilateral venograms, ultrasound, magnetic resonance imaging, and echocardiography. Symptomatic TEs were confirmed by appropriate radiographic tests. All tests were read by a blinded central adjudication committee. RESULTS Twenty-two of 60 children had TEs, a prevalence of 36.7% (95% confidence interval, 24.4,48.8%). TEs were located in the sinovenous system of the brain in 1 patient, the right atrium in 3 patients, and the upper central venous system in 19 patients. TEs detected by venography resulted in 1) 25,100% occlusion, with 1 in 3 patients showing occlusion of > 75% of the greatest vessel dimension, and 2) the presence of collaterals in 60% of patients, with 40% categorized as major. No children with TEs were positive for factor V Leiden or prothrombin gene 20201A, and four of eight children with antiphospholipid antibodies had a TE. CONCLUSIONS The prevalence of TEs is exceedingly high in this population, and it is likely that the extent of occlusion is likely clinically significant. No trend was seen toward an association between TEs and the presence of congenital prothrombotic disorders. A trend was seen toward an association between TEs and antiphospholipid antibodies. Carefully designed clinical trials of primary prophylaxis for the prevention of TEs are required in this patient population. Cancer 2003;97:508,16. © 2003 American Cancer Society. DOI 10.1002/cncr.11042 [source] Effect of Cross Linking Agent on Alkali/Surfactant/PolymerCHINESE JOURNAL OF CHEMISTRY, Issue 1 2008Ke ZHANG Abstract Alkali/surfactant/polymer (ASP) multisystem flooding technique, which has an expansive application prospect, is one of the enhancing oil recovery (EOR) methods. By adding the organic chromium to the ASP, the molecular structure of polymer was made to change, and the capability of controlling mobility coefficient of ASP was improved. The results showed that multisystem could still keep ultra-low interfacial tension between the multisystem and crude oil after addition of Cr3+. The resistance factor and residual resistance factor, the indicator which describes the capability of controlling mobility, upgraded strikingly. However its storage modulus and loss modulus, the indicator which describes viscoelasticity, increased. The results of physical simulation experiment indicated that this type of improved ASP could increase the recovery ratio by 4.3% compared to common ASP multisystem. [source] Growth patterns during childhood and the relationship with acylation-stimulating proteinCLINICAL ENDOCRINOLOGY, Issue 6 2010R. W. J. Leunissen Summary Background/Objectives, Acylation-stimulating protein (ASP) is an adipose tissue-derived hormone, which stimulates glucose and free fatty acid (FFA) uptake into adipocytes. Changes in ASP metabolism are associated with alterations in lipid metabolism. As postnatal catch-up growth has been associated with dyslipidaemia in later life, we investigated the association between ASP and birth size, adult size and different growth patterns during childhood. Methods, The associations were investigated by multiple regression analyses in 285 young adults, aged 18,24. Subsequently, differences in ASP were analysed in four clinically relevant subgroups, young adults either born small for gestational age with short stature (SGA-S) or with catch-up growth (SGA-CU), or born appropriate for gestational age with idiopathic short stature (ISS) or with normal stature (controls). Results, Weight gain during childhood, particularly fat accumulation, was positively related to ASP levels in early adulthood, independent of birth size, age and gender. Foetal growth, reflected by birth size, was not related to ASP levels. Between the subgroups, no differences in ASP were found, but SGA-CU and ISS subjects had significantly higher levels of FFA. Conclusion, Exaggerated weight gain during childhood, but not foetal growth, contributes to alterations in ASP metabolism, which may be associated with impaired FFA uptake and delayed triglycerides clearance. Therefore, exaggerated weight gain during childhood should be prevented. [source] UNUSUAL GASTROINTESTINAL METASTASES FROM AN ALVEOLAR SOFT PART SARCOMADIGESTIVE ENDOSCOPY, Issue 2 2010Gyeong-Won Lee Alveolar soft part sarcoma (ASPS) is a rare subtype of soft tissue sarcoma that occurs predominantly in young patients. Despite its relatively indolent course, it generally has a poor prognosis with widespread metastases. The common metastatic sites from an ASPS include the lung, brain and bone. However, metastasis of an ASPS to the gastrointestinal tract is extremely rare. Here, we report a rare case of upper gastrointestinal bleeding and jejunal intussusception due to gastrointestinal metastases from an ASPS. [source] Sclerotinia sclerotiorum: When "to be or not to be" a pathogen?FEMS MICROBIOLOGY LETTERS, Issue 2 2005Dwayne D. Hegedus Abstract Sclerotinia sclerotiorum is unusual among necrotrophic pathogens in its requirement for senescent tissues to establish an infection and to complete the life cycle. A model for the infection process has emerged whereby the pathogenic phase is bounded by saprophytic phases; the distinction being that the dead tissues in the latter are generated by the actions of the pathogen. Initial colonization of dead tissue provides nutrients for pathogen establishment and resources to infect healthy plant tissue. The early pathogenicity stage involves production of oxalic acid and the expression of cell wall degrading enzymes, such as specific isoforms of polygalacturonase (SSPG1) and protease (ASPS), at the expanding edge of the lesion. Such activities release small molecules (oligo-galacturonides and peptides) that serve to induce the expression of a second wave of degradative enzymes that collectively bring about the total dissolution of the plant tissue. Oxalic acid and other metabolites and enzymes suppress host defences during the pathogenic phase, while other components initiate host cell death responses leading to the formation of necrotic tissue. The pathogenic phase is followed by a second saprophytic phase, the transition to which is effected by declining cAMP levels as glucose becomes available and further hydrolytic enzyme synthesis is repressed. Low cAMP levels and an acidic environment generated by the secretion of oxalic acid promote sclerotial development and completion of the life cycle. This review brings together histological, biochemical and molecular information gathered over the past several decades to develop this tri-phasic model for infection. In several instances, studies with Botrytis species are drawn upon for supplemental and supportive evidence for this model. In this process, we attempt to outline how the interplay between glucose levels, cAMP and ambient pH serves to coordinate the transition between these phases and dictate the biochemical and developmental events that define them. [source] A single-nucleotide polymorphism in the 5,-untranslated region of the hPER2 gene is associated with diurnal preferenceJOURNAL OF SLEEP RESEARCH, Issue 3 2005JAYSHAN D. CARPEN Summary The PERIOD2 (PER2) gene is a key component of the molecular mechanism that generates circadian rhythms in mammals. A missense mutation in the human PER2 gene has previously been linked to advanced sleep phase syndrome (ASPS). We have investigated three other single-nucleotide polymorphisms in the hPER2 gene, one downstream of the transcription start site (C,1228T), one in exon 2 in the 5,-untranslated region (5,-UTR) (C111G), and one missense mutation (G3853A) causing a glycine to glutamine substitution in the predicted protein. Subjects selected from a group of 484 volunteers for extreme morning or evening preference, or intermediate diurnal preference were genotyped with regard to the three polymorphisms (n = 35 for each group). Whereas allele frequencies for the other two polymorphisms did not differ significantly between any of the groups, the 111G allele frequency was significantly higher in subjects with extreme morning preference (0.14) than in subjects with extreme evening preference (0.03) (Fisher's exact test, two-sided P value = 0.031, odds ratio = 5.67). No significant difference in 111G allele frequency was observed between either of these groups and subjects with intermediate diurnal preference. Computer prediction indicated that the C111G polymorphism, which occurs 12 bases upstream from the translation start codon, might alter the secondary structure of the transcript. The PER2 111G allele associates with morning preference and is a potential candidate allele for ASPS. [source] Meningeal alveolar soft part sarcoma confirmed by characteristic ASPCR1-TFE3 fusionNEUROPATHOLOGY, Issue 4 2009Istvan Bodi Sarcoma metastatic to the brain is uncommon and rarely occurs as the initial manifestation of tumor. Alveolar soft part sarcoma (ASPS) is a rare but well-studied subtype of sarcoma. A 39-year-old man presented with seizures due to a left temporal meningeal-enhancing lesion with striking brain edema on MRI. The patient underwent neurosurgical resection for suspected meningioma. Histology showed large tumor cells clustering and forming small nests, in places with pseudoalveolar pattern. Diastase-resistant periodic acid-Schiff revealed very rare granular and rod-like cytoplasmic inclusions. Immunohistochemistry showed convincing positivity only with vimentin and smooth muscle actin. The histological features were strongly suggestive of ASPS. At the molecular level RT-PCR and sequencing analysis demonstrated ASPCR1-TFE3 fusion confirming the histological diagnosis of ASPS. There was no evidence of primary extracranial tumor by physical examination and on chest and abdominal CT scan 11 months after presentation. ASPS typically arise from the soft tissues of the extremities and develop multiple metastatic deposits usually with a long clinical course. This case may represent primary meningeal ASPS although metastatic deposit from an undiscovered primary site cannot be entirely excluded. [source] Alveolar soft part sarcoma of the endometrium with expression of CD10 and hormone receptors,APMIS, Issue 7 2007Case Report Alveolar soft part sarcoma (ASPS) is a rare tumor of uncertain histogenesis, mainly localized in the extremities. ASPS originating in the uterine corpus is quite rare; only eight such cases have been reported in the literature. We here present another case of ASPS found in the endometrium in a 50-year-old woman. Metastatic malignant tumor, including ASPS from other organs, was excluded by physical examination and imaging modalities. Thallium 201 was only localized in the uterus. The tumor showed characteristic histological features of ASPS: alveolar architecture with fibrovascular septa and abundant eosinophilic granular cytoplasm with periodic acid-Schiff-positive crystalline material. Diffuse nuclear immunoreactivity for TFE3, a marker recently reported to be specific for ASPS, further supported the diagnosis of ASPS. Interestingly, this tumor was negative for myogenic markers, but positive for CD10, progesterone receptor, and estrogen receptor. These immunohistochemical results and the tumor location suggest a possible link between endometrial stromal cells and the development of this tumor. [source] Simultaneous localization of two linked disease susceptibility genesGENETIC EPIDEMIOLOGY, Issue 1 2005Joanna M. Biernacka Abstract For diseases with complex genetic etiology, more than one susceptibility gene may exist in a single chromosomal region. Extending the work of Liang et al. ([2001] Hum. Hered. 51:64,78), we developed a method for simultaneous localization of two susceptibility genes in one region. We derived an expression for expected allele sharing of an affected sib pair (ASP) at each point across a chromosomal segment containing two susceptibility genes. Using generalized estimating equations (GEE), we developed an algorithm that uses marker identical-by-descent (IBD) sharing in affected sib pairs to simultaneously estimate the locations of the two genes and the mean IBD sharing in ASPs at these two disease loci. Confidence intervals for gene locations can be constructed based on large sample approximations. Application of the described methods to data from a genome scan for type 1 diabetes (Mein et al. [1998] Nat. Genet. 19:297,300) yielded estimates of two putative disease gene locations on chromosome 6, approximately 20 cM apart. Properties of the estimators, including bias, precision, and confidence interval coverage, were studied by simulation for a range of genetic models. The simulations demonstrated that the proposed method can improve disease gene localization and aid in resolving large peaks when two disease genes are present in one chromosomal region. Joint localization of two disease genes improves with increased excess allele sharing at the disease gene loci, increased distance between the disease genes, and increased number of affected sib pairs in the sample. Genet. Epidemiol. © 2004 Wiley-Liss, Inc. [source] A method for evaluating research syntheses: The quality, conclusions, and consensus of 12 syntheses of the effects of after-school programsRESEARCH SYNTHESIS METHODS, Issue 1 2010Jeffrey C. Valentine Abstract Like all forms of empirical inquiry, research syntheses can be carried out in ways that lead to more or less valid inferences about the phenomenon under study. This synthesis of syntheses (a) examined the methods employed in the syntheses of the effects of after-school programs (ASPs) and determined how closely they conformed to what is defined as best practice for research synthesis, (b) compared the inferences drawn from the ASP research literature by each synthesis with the inferences that plausibly could be made from the data they covered, and (c) determined the points of consistency across the syntheses with regard to both potentially valid and potentially invalid conclusions. It was found that the 12 syntheses used highly divergent methods, varying in problem definitions, search strategies, inclusion criteria for individual studies, and techniques for drawing conclusions about the cumulative evidence. Copyright © 2010 John Wiley & Sons, Ltd. 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