4,637 research outputs found
The Bishop-Phelps-Bollob\'{a}s property for operators on
We provide a version for operators of the Bishop-Phelps-Bollob\'{a}s Theorem
when the domain space is the complex space . In fact we prove that the
pair satisfies the Bishop-Phelps-Bollob\'{a}s property for
operators for every Hausdorff locally compact space and any
-uniformly convex space. As a consequence, this holds for ().Comment: 13 page
Length-weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain)
Life history traits are available for many fish species in different regions, but less so for invertebrates such as cephalopods and crustaceans, though, they are increasingly needed for implementing an ecosystem-based approach. Recent food web modelling in the Gulf of Cadiz has identified invertebrates as keystone groups. However, information on life history traits of such groups remains incomplete in this region. To fill this knowledge gap, we report length-weight relationships for 12 cephalopods and 10 crustaceans collected in the Gulf of Cadiz from 2009 to 2013. This study reports, for the first time, life history traits of nine species in the area (Chlorotocus crassicornis, Pasiphaea sivado, Plesionika heterocarpus, Plesionika martia, Processa canaliculata, Solenocera membranacea, Allotheutis media, Sepia orbignyana and Sepietta oweniana). For each species, length-weight relationships, minimum and maximum lengths, mean weights, and depth ranges are presented. Overall, the results revealed that all species showed negative allometric growth (hypoallometry), except P. sivado, the only species showing an isometric growth pattern. We expect that this study will contribute to link sustainable fisheries with biodiversity conservation goals enabling the implementation of operational ecosystem-based management in the Gulf of Cadiz.IEO through FPIinfo:eu-repo/semantics/publishedVersio
Reweighting NNPDFs: the W lepton asymmetry
We present a method for incorporating the information contained in new
datasets into an existing set of parton distribution functions without the need
for refitting. The method involves reweighting the ensemble of parton densities
through the computation of the chi-square to the new dataset. We explain how
reweighting may be used to assess the impact of any new data or pseudodata on
parton densities and thus on their predictions. We show that the method works
by considering the addition of inclusive jet data to a DIS+DY fit, and
comparing to the refitted distribution. We then use reweighting to determine
the impact of recent high statistics lepton asymmetry data from the D0
experiment on the NNPDF2.0 parton set. We find that the D0 inclusive muon and
electron data are perfectly compatible with the rest of the data included in
the NNPDF2.0 analysis and impose additional constraints on the large-x d/u
ratio. The more exclusive D0 electron datasets are however inconsistent both
with the other datasets and among themselves, suggesting that here the
experimental uncertainties have been underestimated.Comment: 36 pages, 22 figures: errors in Eqns.12,36,37 corrected and parts of
Figs.1,6,10,13,15,19 replace
CD8 T cells are dispensable for experimental autoimmune prostatitis induction and chronic pelvic pain development
Impact Factor: 5.5Fil: Salazar, Florencia C. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Salazar, Florencia C. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: MartÃnez, Maria S. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: MartÃnez, Maria S. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Paira, Daniela A. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Paira, Daniela A. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Chocobar, Yair A. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica; Argentina.Fil: Chocobar, Yair A. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Olivera, Carolina. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Olivera, Carolina. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Godoy, Gloria J. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Godoy, Gloria J. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Acosta, RodrÃguez Eva V. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Acosta, RodrÃguez Eva V. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Rivero, Virginia E. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Rivero, Virginia E. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Motrich, Rubén D. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Motrich, Rubén D. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Introduction: Chronic Pelvic Pain Syndrome or Chronic Prostatitis (CPPS/CP) is the most prevalent urologic affliction among young adult men. It is a challenging condition to treat, which significantly decreases patient quality of life, mostly because of its still uncertain aetiology. In that regard, an autoimmune origin is a prominent supported theory. Indeed, studies in patients and in rodent models of Experimental Autoimmune Prostatitis (EAP) have provided compelling evidence suggesting a key role of CD4 Th1 cells in disease pathogenesis. However, the implication of other prominent effectors of the immune system, such as CD8 T cells, has yet to be studied.
Methods: We herein analyzed the induction of prostatitis and the development of chronic pelvic pain in EAP using CD8 T cell-deficient animals.
Results: We found similarly elevated PA-specific immune responses, with high frequencies of specific IFNg+CD4+ and IL17+CD4+ T cells in prostate draining lymph nodes from PA-immunized either CD8 KO or wild type animals with respect to controls. Moreover, these peripheral immune responses were paralleled by the development of significant chronic pelvic pain, and accompanied by prostate histological lesions, characterized by hemorrhage, epithelial cell desquamation, marked periglandular leukocyte infiltration, and increased collagen deposition in both, PA-immunized CD8 KO and wild type animals. As expected, control animals did not develop prostate histological lesions.
Discussion: Our results indicate that CD8 T cells do not play a major role in EAP pathogenesis and chronic pelvic pain development. Moreover, our results corroborate the previous notion that a CD4 Th1 associated immune response drives the induction of prostate tissue inflammation and the development of chronic pelvic pain.info:eu-repo/semantics/publishedVersionFil: Salazar, Florencia C. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Salazar, Florencia C. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: MartÃnez, Maria S. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: MartÃnez, Maria S. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Paira, Daniela A. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Paira, Daniela A. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Chocobar, Yair A. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica; Argentina.Fil: Chocobar, Yair A. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Olivera, Carolina. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Olivera, Carolina. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Godoy, Gloria J. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Godoy, Gloria J. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Acosta, RodrÃguez Eva V. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Acosta, RodrÃguez Eva V. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Rivero, Virginia E. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Rivero, Virginia E. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina.Fil: Motrich, Rubén D. Universidad Nacional de Córdoba. Facultad de Ciencias QuÃmicas. Departamento de BioquÃmica ClÃnica, Argentina.Fil: Motrich, Rubén D. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Centro de Investigaciones en BioquÃmica ClÃnica e InmunologÃa, Argentina
Salivary PYY: A Putative Bypass to Satiety
Peptide YY3-36 is a satiation hormone released postprandially into the bloodstream from L-endocrine cells in the gut epithelia. In the current report, we demonstrate PYY3-36 is also present in murine as well as in human saliva. In mice, salivary PYY3-36 derives from plasma and is also synthesized in the taste cells in taste buds of the tongue. Moreover, the cognate receptor Y2R is abundantly expressed in the basal layer of the progenitor cells of the tongue epithelia and von Ebner's gland. The acute augmentation of salivary PYY3-36 induced stronger satiation as demonstrated in feeding behavioral studies. The effect is mediated through the activation of the specific Y2 receptor expressed in the lingual epithelial cells. In a long-term study involving diet-induced obese (DIO) mice, a sustained increase in PYY3-36 was achieved using viral vector-mediated gene delivery targeting salivary glands. The chronic increase in salivary PYY3-36 resulted in a significant long-term reduction in food intake (FI) and body weight (BW). Thus this study provides evidence for new functions of the previously characterized gut peptide PYY3-36 suggesting a potential simple and efficient alternative therapeutic approach for the treatment of obesity
A first unbiased global NLO determination of parton distributions and their uncertainties
We present a determination of the parton distributions of the nucleon from a
global set of hard scattering data using the NNPDF methodology: NNPDF2.0.
Experimental data include deep-inelastic scattering with the combined HERA-I
dataset, fixed target Drell-Yan production, collider weak boson production and
inclusive jet production. Next-to-leading order QCD is used throughout without
resorting to K-factors. We present and utilize an improved fast algorithm for
the solution of evolution equations and the computation of general hadronic
processes. We introduce improved techniques for the training of the neural
networks which are used as parton parametrization, and we use a novel approach
for the proper treatment of normalization uncertainties. We assess
quantitatively the impact of individual datasets on PDFs. We find very good
consistency of all datasets with each other and with NLO QCD, with no evidence
of tension between datasets. Some PDF combinations relevant for LHC observables
turn out to be determined rather more accurately than in any other parton fit.Comment: 86 pages, 41 figures. PDF sets available from
http://sophia.ecm.ub.es/nnpdf/nnpdf_pdfsets.htm and from LHAPDF. Final
version to be published in Nucl. Phys. B. Various typos corrected and small
clarifications added, fig. 4 added, extended discussion of data consistency
especially in sect 5.1 and 5.
Development and validation of the Family Vulnerability Index to Disability and Dependence (FVI-DD)
This exploratory, descriptive, cross-sectional, and quantitative study aimed to develop and validate an index of family vulnerability to disability and dependence (FVI-DD). This study was adapted from the Family Development Index, with the addition of social and health indicators of disability and dependence. The instrument was applied to 248 families in the city of Sao Paulo, followed by exploratory factor analysis. Factor validation was performed using the concurrent and discriminant validity of the Lawton scale and Katz Index. The descriptive level adopted for the study was p < 0.05. The final vulnerability index comprised 50 questions classified into seven factors contemplating social and health dimensions, and this index exhibited good internal consistency (Cronbach’s alpha = 0.82). FVI-DD was validated using both the Lawton scale and Katz Index. We conclude that FVI-DD can accurately and reliably assess family vulnerability to disability and dependence
Enzyme replacement therapy with galsulfase in 34 children younger than five years of age with MPS VI
Background: Mucopolysaccharidosis type VI (MPS VI) is a progressive, chronic and multisystem lysosomal storage disease with a wide disease spectrum. Clinical and biochemical improvements have been reported for MPS VI patients on enzyme replacement therapy (ERT) with rhASB (recombinant human arylsulfatase B; galsulfase, Naglazyme (R), BioMarin Pharmaceutical Inc.), making early diagnosis and intervention imperative for optimal patient outcomes. Few studies have included children younger than five years of age. This report describes 34 MPS VI patients that started treatment with galsulfase before five years of age.Methods: Data from patients who initiated treatment at <5 years of age were collected from patients' medical records. Baseline and follow-up assessments of common symptoms that led to diagnosis and that were used to evaluate disease progression and treatment efficacy were evaluated.Results: A significant negative correlation was seen with treatment with ERT and urinary GAG levels. of those with baseline and follow-up growth data, 47% remained on their pre-treatment growth curve or moved to a higher percentile after treatment. of the 9 patients with baseline and follow-up sleep studies, 5 remained unaffected and 1 patient initially with mild sleep apnea showed improvement. Data regarding cardiac, ophthalmic, central nervous system, hearing, surgical interventions and development are also reported. No patient discontinued treatment due to an adverse event and all that were treatment-emergent resolved.Conclusions: the prescribed dosage of 1 mg/kg IV weekly with galsulfase ERT is shown to be safe and effective in slowing and/or improving certain aspects of the disease, although patients should be closely monitored for complications associated with the natural history of the disease, especially cardiac valve involvement and spinal cord compression. A long-term follow-up investigation of this group of children will provide further information on the benefits of early treatment as well as disease progression and treatment efficacy and safety in this young patient population. (C) 2013 Elsevier Inc. All rights reserved.BioMarin Pharmaceutical Inc.ShireGenzymeBioMarinFiocruz MS, Inst Nacl Saude Mulher Crianca & Adolescente Fern, Ctr Genet Med, BR-22250020 Rio de Janeiro, RJ, BrazilUniv Fed Bahia, Serv Genet Med, Salvador, BA, BrazilHosp Albert Sabin, Fortaleza, Ceara, BrazilUniv Fed Mato Grosso do Sul, Fac Med, Campo Grande, MS USAUniv São Paulo, Inst Crianca, São Paulo, BrazilHosp Barao de Lucena, Recife, PE, BrazilUniv Fed Parana, Hosp Clin, BR-80060000 Curitiba, Parana, BrazilCtr Reabilitacao Infantil, Natal, RN, BrazilHosp Univ Maranhao, Sao Luis, MA, BrazilUniversidade Federal de São Paulo, Ctr Referencia Erros Inatos Metab, São Paulo, SP, BrazilHosp São Paulo, Enzyme Replacement Therapy Serv, Hosp & Maternidade Celso Pierro, São Paulo, BrazilUniv Fed Rio Grande do Norte, HOSPED, Hosp Pediat Prof Heriberto Ferreira Bezerra, Natal, RN, BrazilUniv Fortaleza, Fortaleza, Ceara, BrazilUniv Fed Rio Grande do Norte, BR-59072970 Natal, RN, BrazilUniv Fed Triangulo Mineiro, Uberaba, MG, BrazilHosp Clin Acre, Rio Branco, AC, BrazilUniv Fed Espirito Santo, HUCAM, Vitoria, ES, BrazilUniversidade Federal de São Paulo, Ctr Referencia Erros Inatos Metab, São Paulo, SP, BrazilHosp São Paulo, Enzyme Replacement Therapy Serv, Hosp & Maternidade Celso Pierro, São Paulo, BrazilWeb of Scienc
Genomics of Plasmodium vivax in Colombia reveals evidence of local bottle-necking and inter-country connectivity in the Americas
Colombia aims to eliminate malaria by 2030 but remains one of the highest burden countries in the Americas. Plasmodium vivax contributes half of all malaria cases, with its control challenged by relapsing parasitaemia, drug resistance and cross-border spread. Using 64 Colombian P. vivax genomes collected between 2013 and 2017, we explored diversity and selection in two major foci of transmission: Chocó and Córdoba. Open-access data from other countries were used for comparative assessment of drug resistance candidates and to assess cross-border spread. Across Colombia, polyclonal infections were infrequent (12%), and infection connectivity was relatively high (median IBD = 5%), consistent with low endemicity. Chocó exhibited a higher frequency of polyclonal infections (23%) than Córdoba (7%), although the difference was not significant (P = 0.300). Most Colombian infections carried double pvdhfr (95%) and single pvdhps (71%) mutants, but other drug resistance mutations were less prevalent (< 10%). There was no evidence of selection at the pvaat1 gene, whose P. falciparum orthologue has recently been implicated in chloroquine resistance. Global population comparisons identified other putative adaptations. Within the Americas, low-level connectivity was observed between Colombia and Peru, highlighting potential for cross-border spread. Our findings demonstrate the potential of molecular data to inform on infection spread and adaptation
A search for spectral hysteresis and energy-dependent time lags from X-ray and TeV gamma-ray observations of Mrk 421
Blazars are variable emitters across all wavelengths over a wide range of
timescales, from months down to minutes. It is therefore essential to observe
blazars simultaneously at different wavelengths, especially in the X-ray and
gamma-ray bands, where the broadband spectral energy distributions usually
peak.
In this work, we report on three "target-of-opportunity" (ToO) observations
of Mrk 421, one of the brightest TeV blazars, triggered by a strong flaring
event at TeV energies in 2014. These observations feature long, continuous, and
simultaneous exposures with XMM-Newton (covering X-ray and optical/ultraviolet
bands) and VERITAS (covering TeV gamma-ray band), along with contemporaneous
observations from other gamma-ray facilities (MAGIC and Fermi-LAT) and a number
of radio and optical facilities. Although neither rapid flares nor significant
X-ray/TeV correlation are detected, these observations reveal subtle changes in
the X-ray spectrum of the source over the course of a few days. We search the
simultaneous X-ray and TeV data for spectral hysteresis patterns and time
delays, which could provide insight into the emission mechanisms and the source
properties (e.g. the radius of the emitting region, the strength of the
magnetic field, and related timescales). The observed broadband spectra are
consistent with a one-zone synchrotron self-Compton model. We find that the
power spectral density distribution at Hz from the
X-ray data can be described by a power-law model with an index value between
1.2 and 1.8, and do not find evidence for a steepening of the power spectral
index (often associated with a characteristic length scale) compared to the
previously reported values at lower frequencies.Comment: 45 pages, 15 figure
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