The 5 Objects Test: Normative data from a Spanish community sample

[EN]Objective: The objective of this study was to provide normative data for the 5 Objects Test in a large Spanish community sample, as well as some validity evidence. Methods: The sample was composed of 427 participants (of which 220 females, age 15 to 95 years old; educational level range: 2–17 years). Normative data are provided, as well as correlations with test scores from Benton Visual Retention test, Rey-Osterrieth Complex Figure and Mini Mental State Examination. Results: No association was found between delayed recall score and level of education, age or gender. Immediate recall score was correlated with age. Both immediate and delayed recall significantly correlated with the criteria, evidencing concurrent validity. Conclusions: It is recommended that the 5 Objects Test be used for assessing persons in primary care, including those from different linguistic backgrounds or with limited language use. Delayed recall scores are especially recommended given the lack of association with demographic variables

Preparation and magnetic properties of Co2-based Heusler alloy glass-coated microwires with high Curie temperature

In this article, we studied the effect of annealing (600 ○C for 1 h) and the applied magnetic field from 50 Oe to 20 kOe of Co2FeSi glass-coated microwires with ordered L21 structure prepared by Taylor–Ulitovsky technique on the magnetic behavior. The as-prepared and annealed samples show a ferromagnetic behavior at the range of measuring temperature (5 to 400 K) and magnetic field (50 Oe to 20 kOe). M–H loops of as prepared sample do not show a squared shape. Meanwhile, perfectly squared hysteresis loops have detected for the annealed sample. In addition, annealed sample shows high magnetization M/M5K ratio, coercivity, and anisotropy field, as-compared to the as-prepared one. The annealed sample shows considerable irreversibility when the magnetic behavior changes with temperature upon the applied magnetic field at 50 and 200 Oe. Such irreversibility does not found in the as-prepared sample measured at the same magnetic field due to mixed amorphous and crystalline structure. By increasing the external magnetic field higher than 200 Oe and up to 20 kOe a gradual changing in the magnetic behavior has been detected where the irreversibility disappeared at applying magnetic field about 1 kOe and the magnetic behavior is totally change by increasing the external magnetic field up to the maximum 20 kOe. The difference in the magnetic behavior of the annealed glass-coated Co2FeSi glass-coated microwires indicates the effect of internal stresses induced by the presence of the glass-coating and the annealing-induced recrystallization.This work was supported by the Spanish MCIU, under PGC2018-099530-B-C31 (MCIU/AEI/FEDER, UE), by EU under “INFINITE” (Horizon Europe) project, by the Government of the Basque Country, under PUE_2021_1_0009 and Elkartek (MIN- ERVA and ZE-KONP) projects and under the scheme of “Ayuda a Grupos Consolidados”(ref. IT1670-22), by the Diputación Foral de Gipuzkoa in the frame of Programa “Red guipuzcoana de Ciencia, Tecnología e Innovación 2021” under 2021-CIEN-000007- 01 project and by the University of Basque Country under COLAB20/15 project

Fabrication and Magneto-Structural Properties of Co2-Based Heusler Alloy Glass-Coated Microwires with High Curie Temperature

[EN] In this work, we were able to produce Co2FeSi Heusler alloy glass-covered microwires with a metallic nucleus diameter of about 4.4 µm and total sample diameter of about 17.6 μm by the Taylor–Ulitovsky Technique. This low cost and single step fabrication process allowed the preparation of up to kilometers long glass-coated microwires starting from a few grams of high purity inexpensive elements (Co, Fe and Si), for a wide range of applications. From the X-ray diffraction, XRD, analysis of the metallic nucleus, it was shown that the structure consists of a mixture of crystalline and amorphous phases. The single and wide crystalline peak was attributed to a L21 crystalline structure (5.640 Å), with a possible B2 disorder. In addition, nanocrystalline structure with an average grain size, Dg = 17.8 nm, and crystalline phase content of about 52% was obtained. The magnetic measurements indicated a well-defined magnetic anisotropy for all ranges of temperature. Moreover, soft magnetic behavior was observed for the temperature measuring range of 5–1000 K. Strong dependence of the magnetic properties on the applied magnetic field and temperature was observed. Zero field cooling and field cooling magnetization curves showed large irreversibility magnetic behavior with a blocking temperature (TB = 205 K). The in-plane magnetization remanence and coercivity showed quite different behavior with temperature, due to the existence of different magnetic phases induced from the internal stress created by the glass-coated layer. Moreover, a high Curie temperature was reported (Tc ≈ 1059 K), which predisposes this material to being a suitable candidate for high temperature spintronic applications.This research was funded by the Spanish MCIU, under PGC2018-099530-B-C31 (MCIU/ AEI/FEDER, UE), by EU under “INFINITE” (HORIZON-CL5-2021-D5-01-06) project, by the Gov- ernment of the Basque Country under PUE_2021_1_0009 and Elkartek (MINERVA, ZE-KONP and COMPONENS) projects, by the University of the Basque Country, under the scheme of “Ayuda a Grupos Consolidados” (Ref.: GIU18/192) and under the COLAB20/15 project and by the Diputación Foral de Gipuzkoa in the frame of Programa “Red guipuzcoana de Ciencia, Tecnología e Innovación 2021” under 2021-CIEN-000007-01 projec

Anomalous magnetic behavior in half-metallic Heusler Co2FeSi alloy glass-coated microwires with high Curie temperature

In the current study, we have succeeded to fabricate Co2FeSi Heusler alloy glass-covered microwires with magnetic core nucleus diameter d = 4.36 mu m and total diameter D = 17.55 mu m, with high Curie temperature (T-e > 1100 K) and well-defined magnetic anisotropy for high temperature spintronic devices application. The magnetic properties of as-prepared and annealed at different temperature (873 K, 973 K and 1073 K for 1 h) of Co2FeSi Heusler alloy glass-covered microwires have been investigated. Strong dependence of the magnetic properties on the annealing conditions has been indicated. Anomalous magnetic behavior for annealed samples at 873 K and 973 K has been found and structural properties of such samples have been analyzed. Critical temperatures 155 K and 250 K have been detected for annealed samples at 873 K and 973 K, respectively, where the behavior of M-H loops and coercivity changed. Below the critical point the M -H curve shows "kink or wasp-waisted" magnetic behavior and complex magnetic reversal mechanism is supposed. The anomalous magnetic behavior is due to the martensitic phases induced by annealing con-ditions below the room temperature. This unusual magnetization behavior provides opportunities to un-derstand the phenomena of different types of magnetic domain structures in the preferred crystallographically oriented Co2FeSi Heusler alloy glass-coated micro-wires, essentially helpful for de-signing the devices based on magnetization switching.This work was supported by the Spanish MCIU, under PGC2018-099530-B-C31 (MCIU/AEI/FEDER, UE), by EU under “INFINITE” (HORIZON-CL5-2021-D5-01-06) project, by the Government of the Basque Country, under PUE_2021_1_0009 and Elkartek (Composens, Minerva and ZE-KONP) projects, by the University of Basque Country, under the scheme of “Ayuda a Grupos Consolidados” (Ref.: GIU18/192) and under the COLAB20/15 project and by the Diputación Foral de Gipuzkoa in the frame of Programa “Red guipuzcoana de Ciencia, Tecnología e Innovación 2021” under 2021-CIEN-000007-01 project. The authors thank for technical and human support provided by SGIker (Medidas Magneticas Gipuzkoa) (UPV/EHU/ ERDF, EU). We wish to thank the administration of the University of the Basque Country, which not only provides very limited funding, but even expropriates the resources received by the research group from private companies for the research activities of the group. Such interference helps keep us on our toes

The Magnetostriction of Amorphous Magnetic Microwires: The Role of the Local Atomic Environment and Internal Stresses Relaxation

We studied the magnetostriction coefficients, λs, Curie temperature, Tc, and their dependence on annealing conditions in Fe47Ni27Si11B13C2 and Co67Fe3.9Ni1.5B11.5Si14.5Mo1.6 amorphous glass-coated microwires with rather different character of hysteresis loops. A positive λs ≈ 20 × 10−6 is observed in as-prepared Fe47Ni27Si11B13C2, while low and negative λs ≈ −0.3 × 10−6 is obtained for Co67Fe3.9Ni1.5B11.5Si14.5Mo1.6 microwire. Annealing affects the magnetostriction coefficients and Curie temperatures, Tc, of both Fe47Ni27Si11B13C2 and Co67Fe3.9Ni1.5B11.5Si14.5Mo1.6 glass-coated microwires in a similar way. Observed dependencies of hysteresis loops, λs and Tc on annealing conditions are discussed in terms of superposition of internal stresses relaxation and structural relaxation of studied microwires. We observed linear λs dependence on applied stress, σ, in both studied microwires. A decrease in the magnetostriction coefficient upon applied stress is observed for Co-rich microwires with low and negative magnetostriction coefficient. On the contrary, for Fe-Ni-rich microwires with a positive magnetostriction coefficient, an increase in the magnetostriction coefficient with applied stress is observed. The observed results are discussed considering the internal stresses relaxation and short range atomic rearrangements induced by annealing on hysteresis loops, magnetostriction coefficients and Curie temperatures of studied microwires.This work was supported by EU under “INFINITE” (HORIZON-CL5-2021-D5-01-06) project, by the Spanish MICIN, under PID2022-141373NB-I00 project and by the Government of the Basque Country under PUE_2021_1_0009, Elkartek (MINERVA, MAGAF and ZE-KONP) projects and under the scheme of “Ayuda a Grupos Consolidados” (ref. IT1670-22). J.O. thanks the Ministry of Higher Education, Science and Technology (MESCYT) of the Dominican Republic

Leishmaniasis in cats: more important than we believe?

Leishmaniasis is one of the world, neglected tropical diseases (NTD), recently, celebrated its day (January 30, 2020). Infection due to Leishmania is a major public health problem in many tropical countries; due to its high incidence and wide geographical distribution [1]. Both domestic and wild animals may serve as host reservoirs of Leishmania spp [2]. The Role of dogs in the zoonotic cycle of Leishmania spp, especially in urban and peri-urban areas, has long been understood. Nevertheless, recent studies have detected Leishmania infections in domestic cats

Optimization of Magnetoimpedance Effect and Magnetic Properties of Fe-Rich Glass-Coated Microwires by Annealing

As-prepared Fe-rich microwires with perfectly rectangular hysteresis loops present magnetization reversal through fast domain wall propagation, while the giant magnetoimpedance (GMI) effect in Fe-rich microwires is rather low. However, the lower cost of Fe-rich microwires makes them attractive for magnetic sensors applications. We studied the effect of conventional (furnace) annealing and Joule heating on magnetic-propertied domain wall (DW) dynamics and the GMI effect in two Fe microwires with different geometries. We observed that magnetic softness, GMI effect and domain wall (DW) dynamics can be substantially improved by appropriate annealing. Observed experimental results are discussed considering the counterbalance between the internal stresses relaxation and induced magnetic anisotropy associated with the presence of an Oersted magnetic field during Joule heating.This work was funded by the Spanish MICIN under PID2022-141373NB-I00, by the EU “Horizon Europe “under the “INFINITE” (HORIZON-CL5-2021-D5-01-06) project and by the government of the Basque Country under PUE_2021_1_0009, “Ayuda a Grupos Consolidados” (ref. IT1670-22) and Elkartek (MINERVA, MAGAF and ZE-KONP) projects

Anomalous Magnetic Anisotropy Behaviour in Co-Rich and Fe-Rich Glass-Coated Microwires under Applied Stress

In this article, we study the effect of annealing temperature and applied stress on the magnetic properties of Fe71.80B13.27Si11.02Nb2.99Ni0.92 and Co65.34Si12.00B10.20Cr8.48Fe3.90Mo0.08 microwires. An anomalous behavior of the coercive field is observed while applying stress, indicating nontrivial changes in the microwire magnetic anisotropy. The effect of applied stimuli on the magnetic anisotropy and magnetostriction constant in both microwires is also discussed.This work was supported by the EU under the “INFINITE” (HORIZON-CL5-2021-D5-01-06) project by the Spanish MICIN (PID2022-141373NB-I00) project as well as the Government of the Basque Country (PUE-2021-1-0009), Elkartek (MINERVA, MAGAF and ZE-KONP) projects and under the scheme of “Ayuda a Grupos Consolidados” (ref. IT1670-22)

Polypeptide N-acetylgalactosamine transferase 3: a post-translational writer on human health

Polypeptide N-acetylgalactosamine transferase 3 (ppGalNAc-T3) is an enzyme involved in the initiation of O-GalNAc glycan biosynthesis. Acting as a writer of frequent post-translational modification (PTM) on human proteins, ppGalNAc-T3 has key functions in the homeostasis of human cells and tissues. We review the relevant roles of this molecule in the biosynthesis of O-GalNAc glycans, as well as in biological functions related to human physiological and pathological conditions. With main emphasis in ppGalNAc-T3, we draw attention to the different ways involved in the modulation of ppGalNAc-Ts enzymatic activity. In addition, we take notice on recent reports of ppGalNAc-T3 having different subcellular localizations, highlight critical intrinsic and extrinsic functions in cellular physiology that are exerted by ppGalNAc-T3-synthesized PTMs, and provide an update on several human pathologies associated with dysfunctional ppGalNAc-T3. Finally, we propose biotechnological tools as new therapeutic options for the treatment of pathologies related to altered ppGalNAc-T3. KEY MESSAGES: ppGalNAc-T3 is a key enzyme in the human O-GalNAc glycans biosynthesis. enzyme activity is regulated by PTMs, lectin domain and protein-protein interactions. ppGalNAc-T3 is located in human Golgi apparatus and cell nucleus. ppGalNAc-T3 has a central role in cell physiology as well as in several pathologies. Biotechnological tools for pathological management are proposed.Fil: Garay, Yohana Camila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Cejas, Romina Beatríz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Lorenz, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Salud y Ambiente del Litoral. Universidad Nacional del Litoral. Instituto de Salud y Ambiente del Litoral; ArgentinaFil: Zlocowski, Natacha. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; ArgentinaFil: Parodi, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Ferrero, Franco Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Angeloni, Genaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Alfonso García, Valentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Sendra, Victor German. Tufts University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lardone, Ricardo Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Irazoqui, Fernando Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentin

Efecto de la suplementación con vitaminas del complejo B sobre el declive cognitivo en pacientes con enfermedad de Alzheimer. Revisión sistemática y metanálisis

ABSTRACT Introduction: Cognitive decline is a marker for the onset and progression of Alzheimer's disease (AD). Currently, modification of risk factors, such as nutrition, are promising for the treatment of AD. The objective was to identify the effect of B-vitamin supplementation on cognitive decline in patients with mild cognitive impairment and AD. Materials and methods: Systematic review and meta-analysis of the literature in five search engines (PROSPERO CRD42021247743). Controlled experiments were included, in adults aged 60 years or older, with measurement of cognitive status (ADAS-Cog, Clinical dementia rating-CDR and/or Mini Mental State Examination-MMSE) and use of B-complex vitamin supplements individually or combined with other vitamins or drugs. Quality assessment was done with the RoB-2 tool. Independently, three investigators made the selection, extraction, and evaluation of the data. The meta-analyses used mean difference and random effect model. Results: the search found 247 references and 12 references were included for the meta-analysis. The publication bias was not found. The quality of the studies was adequate. B-vitamin supplementation had no effect on cognitive decline by ADAS-Cog (MD 0.01 CI95% -0.7 to 0.72), CDR (MD -0.06 CI95% -0.48 to 0.36), and MMSE (MD 0.3 CI95% -0.01 to 0.61). Conclusions: Cognitive decline was invariant following B-vitamin supplementation in adults with cognitive impairment or Alzheimer's disease. Future research should focus on multi-intervention strategies. Funding: The authors declare that there has been no funding to carry out this study.Introducción: el declive cognitivo es un marcador de la aparición y avance de la enfermedad de Alzheimer (EA). Actualmente, la modificación de factores de riesgo, como la nutrición, son promisorios para el tratamiento de la EA. El objetivo fue Identificar el efecto de la suplementación de vitaminas del complejo B sobre el declive cognitivo en pacientes con daño cognitivo o EA. Materiales y métodos: Revisión sistemática y metaanálisis de la literatura en cinco buscadores (PROSPERO CRD42021247743). Se incluyeron experimentos controlados, en adultos de 60 o más años, con medición del estado cognitivo (ADAS-Cog, Clinical dementia ratin-CDR y/o Mini Mental State Examination-MMSE) y uso de suplementos de vitaminas del complejo B de manera individual o combinada con otras vitaminas o fármacos. La evaluación de la calidad se hizo con la herramienta RoB-2. La selección, extracción y evaluación se hizo por tres investigadores de manera independiente. El metaanálisis empleo la diferencia media y modelos de efectos aleatorios. Resultados: la búsqueda arrojo 247 referencias y finalmente se incluyeron 12 para el metaanálisis. No se encontraron sesgos de publicación. La calidad de los estudios es adecuada. El suplemento de vitamina B no mostró efecto sobre el declive cognitivo medido por ADAS-Cog (DM 0.01 IC95% -0.7 a 0.72), CDR (DM –0.06 IC95% -0.48 a 0.36) y MMSE (DM 0.3 IC95% -0.01 a 0.61). Conclusiones: el declive cognitivo es invariable ante la suplementación de vitaminas del complejo B en adultos con daño cognitivo o Enfermedad de Alzheimer. Futuras investigaciones deben enfocarse hacia estrategias multi intervención. Palabras claves: Enfermedad de Alzheimer; declive cognitivo; vitaminas del complejo B; metaanálisis. Financiación: Los autores/as declaran que no ha existido financiación para realizar este estudio. Registro: PROSPERO CRD4202124774