Search results for "HLA"
showing 10 items of 664 documents
Jeps, aloitellaan
2017
Data from: The importance of phytoplankton biomolecule availability for secondary production
2018
The growth and reproduction of animals is affected by their access to resources. In aquatic ecosystems, the availability of essential biomolecules for filter-feeding zooplankton depends greatly on phytoplankton. Here, we analyzed the biochemical composition, i.e., the fatty acid, sterol and amino acid profiles and concentrations as well as protein, carbon, nitrogen, and phosphorus content of 17 phytoplankton monocultures representing the seven most abundant phytoplankton classes in boreal and sub-arctic lakes. To examine how the differences in the biochemical composition between phytoplankton classes affect their nutritional quality for consumers, we assessed the performance of Daphnia, on …
New perspectives on the evolution of the genus Typhlatya (Crustacea, Decapoda): first record of a cavernicolous atyid in the Iberian Peninsula, Typhl…
1995
On several occasions, shrimps belonging to a new species of the genus Typhlatya were collected in a cave in the province of Castellón, Spain. This is the first record of the genus in the Iberian Peninsula. The species is described and the validity, distribution, and zoogeography of the genus, as well as the status of the genus Spelaeocaris, are discussed. Former models for the evolution of the genus Typhlatya and its genus group are reviewed, as well as the system of inner classification of the Atyidae and its biogeographical meaning. For the age and evolution of the genus we developed a new model based on vicariance principles that involves further evolution of each species after the disru…
Epistemic network analyses of economics students' graph understanding. An eye-tracking study
2020
Learning to solve graph tasks is one of the key prerequisites of acquiring domain-specific knowledge in most study domains. Analyses of graph understanding often use eye-tracking and focus on analyzing how much time students spend gazing at particular areas of a graph&mdash
Musiikkifestivaalit oppivina organisaatioina : tutkimuskohteina Savonlinnan Oopperajuhlat ja Haapavesi Folk Music Festival
2012
Tutkimuksessa tarkastellaan kahden suomalaisen musiikkifestivaalin, Savonlinnan Oopperajuhlien ja Haapavesi Fok Music Festivalin, kohtaamia haasteita 2000-luvulla sekä sitä, miten haasteisiin on reagoitu ja toimintaa sitä kautta kehitetty. Kun festivaalien tarkastelun painopiste on kehittämistoiminnassa ja siihen johtavissa tekijöissä, tarvitaan oppimista sekä oppimiseen ja kehittämiseen suuntautunutta organisaatiota. Tutkimuksen teoreettisena viitekehyksenä on siis oppiva organisaatio, jonka luomien raamien puitteissa festivaaleja lähestyttiin johtajuuden, suunnan, kehittymisen esteiden, kehittymisen suunnan valinnan ja toteutuksen sekä palkitsemisjärjestelmien osa- alueiden kautta. Tutkim…
Forward light-by-light scattering and electromagnetic correction to hadronic vacuum polarization
2023
Lattice QCD calculations of the hadronic vacuum polarization (HVP) have reached a precision where the electromagnetic (e.m.) correction can no longer be neglected. This correction is both computationally challenging and hard to validate, as it leads to ultraviolet (UV) divergences and to sizeable infrared (IR) effects associated with the massless photon. While we precisely determine the UV divergence using the operator-product expansion, we propose to introduce a separation scale $\Lambda\sim400\;$MeV into the internal photon propagator, whereby the calculation splits into a short-distance part, regulated in the UV by the lattice and in the IR by the scale $\Lambda$, and a UV-finite long-di…
HLA-DQ de enfermedad celíaca en pacientes con enfermedad inflamatoria intestinal crónica
2015
Introducción: La enfermedad celíaca (EC) y la Enfermedad Inflamatoria Intestinal Crónica (EIIC, que incluye CU –colitis ulcerosa- y ECr –Enfermedad de Crohn-) son enfermedades cuya incidencia y prevalencia va en aumento, y en las que se consideraba que tener una de ellas aumentaba la predisposición a la otra. El HLA-DQ 2 y DQ8, de riesgo de EC (HLA-EC), tiene un alto valor predictivo negativo, estando presente en el 95-99% de los celíacos. Nuestra hipótesis era que el HLA-EC no es más frecuente en la EIIC. Material y método: Se incluyeron prospectivamente pacientes adultos con EIIC, de origen caucásico, de nuestra Unidad de EIIC. Se les realizaba entrevista, estudio de su historia clínica y…
Redox modulation of Rubisco conformation and activity through its cysteine residues
2008
Treatment of purified Rubisco with agents that specifically oxidize cysteine-thiol groups causes catalytic inactivation and increased proteolytic sensitivity of the enzyme. It has been suggested that these redox properties may sustain a mechanism of regulating Rubisco activity and turnover during senescence or stress. Current research efforts are addressing the structural basis of the redox modulation of Rubisco and the identification of critical cysteines. Redox shifts result in Rubisco conformational changes as revealed by the alteration of its proteolytic fragmentation pattern upon oxidation. In particular, the augmented susceptibility of Rubisco to proteases is due to increased exposure…
REDOX PROPERTIES ARE CONSERVED IN RUBISCOS FROM DIATOMS AND GREEN ALGAE THROUGH A DIFFERENT PATTERN OF CYSTEINES1
2010
Eukaryotic RUBISCO appears in two sequence-diverging forms, known as red-like (present in nongreen algae) and green-like (of green algae and higher plants) types. Oxidation of cysteines from green-like RUBISCOs is known to result in conformational changes that inactivate the enzyme and render a relaxed structure more prone to proteolytic attack. These changes may have regulatory value for green algae and higher plants, promoting RUBISCO catabolism under stress conditions. We compare here red-like RUBISCOs from several diatoms with a representative green-like RUBISCO from Chlamydomonas reinhardtii, paying special attention to the cysteine-dependent redox properties. Purified diatom RUBISCO p…
Mixed Epidermal Cell Lymphocyte Reaction: HLA-DR+ Cells Exhibit a Greater Immunostimulatory Activity than CD1a+ Cells
1995
Induction and expression of immunity depends upon processing and presentation of antigens to T-cells by bone marrow derived HLA-DR+ antigen presenting cells (APC). In the induction of immunity to cutaneous antigens, the initial stages of this process begin within the skin itself, and both epidermis and dermis contain bone-marrow derived cells that have the capability of processing and presenting antigens. In normal epidermis, HLA-DR expression is believed to be confined to Langerhans cells with Birbeck granules and indeterminate cells without Birbeck granules. In diseased skin, particularly the inflammatory dermatoses, HLA-DR is commonly expressed by keratinocytes and has been related to th…