145 research outputs found
Microencapsulation techniques: a proposal for microencapsulated probiotics.
A la hora de utilizar probióticos, el principal problema que se presenta, es la escasa resistencia de estos a diferentes condiciones ambientales y tecnológicas. Las técnicas de microencapsulación son un buen método para proteger a estos microorganismos, sin embargo no todas las técnicas son apropiadas para los probióticos. En este artículo proponemos la técnica de gelificación interna, que por sus características permite la obtención de un tamaño de partícula adecuado y la supervivencia de los microorganismos.The main problem when probiotics are used is the low resistance of these to different environmental and technological conditions. The microencapsulation techniques are a good method in order to protect the probiotics, Nevertheless not all techniques of microencapsulation are suitable for probiotics. In this paper, we propose the internal gelification which allows us to obtain a suitable particle size and the survival of the microorganisms
Tocilizumab in visual involvement of giant cell arteritis: a multicenter study of 471 patients
Background: Visual involvement is the most feared complication of giant cell arteritis (GCA). Information on the efficacy of tocilizumab (TCZ) for this complication is scarce and controversial. Objective: We assessed a wide series of GCA treated with TCZ, to evaluate its role in the prevention of new visual complications and its efficacy when this manifestation was already present before the initiation of TCZ. Design: This is an observational multicenter study of patients with GCA treated with TCZ. Methods: Patients were divided into two subgroups according to the presence or absence of visual involvement before TCZ onset. Visual manifestations were classified into the following categories: transient visual loss (TVL), permanent visual loss (PVL), diplopia, and blurred vision. Results: Four hundred seventy-one GCA patients (mean age, 74 +/- 9 years) were treated with TCZ. Visual manifestations were observed in 122 cases (26%), of which 81 were present at TCZ onset: PVL (n = 60; unilateral/bilateral: 48/12), TVL (n = 17; unilateral/bilateral: 11/6), diplopia (n = 2), and blurred vision (n = 2). None of the patients without previous visual involvement or with TVL had new episodes after initiation of TCZ, while only 11 out of 60 (18%) patients with PVL experienced some improvement. The two patients with diplopia and one of the two patients with blurred vision improved. Conclusion: TCZ may have a protective effect against the development of visual complications or new episodes of TVL in GCA. However, once PVL was established, only a few patients improved
The macroecology of phylogenetically structured hummingbird-plant networks
Aim To investigate the association between species richness, species' phylogenetic signal, insularity and historical and current climate with hummingbird-plant network structure. Location 54 communities along a c. 10,000 kilometer latitudinal gradient across the Americas (39ºN - 32ºS), ranging from sea level to c. 3700 m asl, located on the mainland and on islands, and covering a wide range of climate regimes. Methods We measured null-modeled corrected complementary specialization and bipartite modularity (compartmentalization) in networks of quantitative interactions between hummingbird and plant species. Using an ordinary least squares multi-model approach, we examined the influence of species richness, phylogenetic signal, insularity, and current and historical climate conditions on network structure. Results Phylogenetically-related species, especially plants, showed a tendency to interact with a similar array of partners. The spatial variation in network structure exhibited a constant association with species' phylogeny (R2=0.18-0.19). Species richness and environmental factors showed the strongest associations with network structure (R2=0.20-0.44; R2138 =0.32-0.45, respectively). Specifically, higher levels of complementary specialization and modularity were associated to species-rich communities and communities in which closely-related hummingbirds visited distinct sets of flowering species. On the mainland, warmer temperatures and higher historical temperature stability associated to higher levels of complementary specialization. Main conclusions Previous macroecological studies of interaction networks have highlighted the importance of environment and species richness in determining network structure. Here, for the first time, we report an association between species phylogenetic signal and network structure at macroecological scale. Specifically, null model corrected complementary specialization and modularity exhibited a positive association with species richness and a negative association with hummingbird phylogenetic signal, indicating that both high richness and high inter-specific competition among closely-related 150 hummingbirds exhibit important relationships with specialization in hummingbird-plant networks. Our results document how species richness, phylogenetic signal and climate associate with network structure in complex ways at macroecological scale
Effects of an anionic surfactant (FFD-6) on the energy and information flow between a primary producer (Scenedesmus obliquus) and a consumer (Daphnia magna)
The effects of a commercially available anionic surfactant solution (FFD-6) on growth and morphology of a common green alga (Scenedesmus obliquus) and on survival and clearance rates of the water flea Daphnia magna were studied. The surfactant-solution elicited a morphological response (formation of colonies) in Scenedesmus at concentrations of 10–100 μl l−1 that were far below the No Observed Effect Concentration (NOEC) value of 1,000 μl l−1 for growth inhibition. The NOEC-value of FFD-6 for colony-induction was 3 μl l−1. Daphnia survival was strongly affected by FFD-6, yielding LC50–24h and LC50–48h of 148 and 26 μl l−1, respectively. In addition, clearance rates of Daphnia feeding on unicellular Scenedesmus were inhibited by FFD-6, yielding a 50% inhibition (EC50–1.5h) at 5.2 μl l−1 with a NOEC of 0.5 μl l−1. When Daphnia were offered FFD-6-induced food in which eight-celled colonies (43 × 29 μm) were most abundant, clearance rates (~0.14 ml ind.−1 h−1) were only 25% the rates of animals that were offered non-induced unicellular (15 × 5 μm) Scenedesmus (~0.56 ml ind.−1 h−1). As FFD-6 concentrations in the treated food used in the experiments were far below the NOEC for clearance rate inhibition, it is concluded that the feeding rate depression was caused by the altered morphology of the Scenedesmus moving them out of the feeding window of the daphnids. The surfactant evoked a response in Scenedesmus that is similar to the natural chemically induced defensive reaction against grazers and could disrupt the natural information conveyance between these plankton organisms
Fruit and Vegetable Consumption is Inversely Associated with Plasma Saturated Fatty Acids at Baseline in Predimed Plus Trial
I.D.-L. is supported by the [FI_B 00256] from the FI-AGAUR Research Fellowship Program, Generalitat de Catalunya and M.M.-M is supported by the FPU17/00513 grant. a.-H. is supported by the [CD17/00122] grant and S.K.N. is supported by a Canadian Institutes of Health Research (CIHR) Fellowship. We also thank all the volunteers for their participation in and the personnel for their contribution to the PREDIMED-Plus trial. This research was funded by CiCYT [AGL2016-75329-R] and CIBEROBN from the Instituto de Salud Carlos III, ISCIII from the Ministerio de Ciencia, Innovacion y Universidades, (AEI/FEDER, UE), Generalitat de Catalunya (GC) [2017SGR196]. The PREDIMED-Plus trial was supported by the official Spanish Institutions for funding scientific biomedical research, CIBER Fisiopatologia de la Obesidad y Nutricion (CIBERobn) and Instituto de Salud Carlos III (ISCIII), through the Fondo de Investigacion para la Salud (FIS), which is co-funded by the European Regional Development Fund (four coordinated Fondo de Investigaciones Sanitarias projects lead by J.S.-S. and J.V., including the following projects: PI13/00673, PI13/00492, PI13/00272, PI13/01123, PI13/00462, PI13/00233, PI13/02184, PI13/00728, PI13/01090, PI13/01056, PI14/01722, PI14/00636, PI14/00618, PI14/00696, PI14/01206, PI14/01919, PI14/00853, PI14/01374, PI14/00972, PI14/00728, PI14/01471, PI16/00473, PI16/00662, PI16/01873, PI16/01094, PI16/00501, PI16/00533, PI16/00381, PI16/00366, PI16/01522, PI16/01120, PI17/00764, PI17/01183, PI17/00855, PI17/01347, PI17/00525, PI17/01827, PI17/00532, PI17/00215, PI17/01441, PI17/00508, PI17/01732, PI17/00926 and PI19/00781), the Especial Action Project entitled Implementacion y evaluacion de una intervencion intensiva sobre la actividad fisica Cohorte PREDIMED-Plus grant to J.S.-S., European Research Council (Advanced Research Grant 2014-2019, 340918) to M.a.M.-G., the Recercaixa grant to J.S.-S. (2013ACUP00194), grants from the Consejeria de Salud de la Junta de Andalucia (PI0458/2013, PS0358/2016, and PI0137/2018), a grant from the Generalitat Valenciana (PROMETEO/2017/017), a SEMERGEN grant, Fundacio la Marato de TV3 (PI044003), 2017 SGR 1717 from Generalitat de Catalunya, a CICYT grant provided by the Ministerio de Ciencia, Innovacion y Universidades (AGL2016-75329-R), and funds from the European Regional Development Fund (CB06/03 and CB12/03). Food companies Hojiblanca (Lucena, Spain) and Patrimonio Comunal Olivarero (Madrid, Spain) donated extra virgin olive oil, and the Almond Board of California (Modesto, CA, USA), American Pistachio Growers (Fresno, CA, USA), and Paramount Farms (Wonderful Company, LLC, Los Angeles, CA, USA) donated nuts. J.K. was supported by the "FOLIUM" program within the FUTURMed project entitled Talent for the medicine within the future from the Fundacio Institut d'Investigacio Sanitaria Illes Balears. This call was co-financed at 50% with charge to the Operational Program FSE 2014-2020 of the Balearic Islands. This work is partially supported by ICREA under the ICREA Academia programme to J.S.-S.Scope: Plasma fatty acids (FAs) are associated with the development of cardiovascular diseases and metabolic syndrome.
The aim of our study is to assess the relationship between fruit and vegetable (F&V) consumption and plasma FAs and
their subtypes.
Methods and Results: Plasma FAs are assessed in a cross-sectional analysis of a subsample of 240 subjects from the
PREDIMED-Plus study. Participants are categorized into four groups of fruit, vegetable, and fat intake according to the
food frequency questionnaire. Plasma FA analysis is performed using gas chromatography. Associations between FAs
and F&V consumption are adjusted for age, sex, physical activity, bodymass index (BMI), total energy intake, and alcohol
consumption. Plasma saturated FAs are lower in groups with high F&V consumption (-1.20 mg cL−1 [95% CI: [-2.22, -
0.18], p-value = 0.021), especially when fat intake is high (-1.74 mg cL−1 [95% CI: [-3.41, -0.06], p-value = 0.042). Total
FAs and n-6 polyunsaturated FAs tend to be lower in high consumers of F&V only in the high-fat intake groups.
Conclusions: F&V consumption is associated with lower plasma saturated FAs when fat intake is high. These findings
suggest that F&V consumption may have different associations with plasma FAs depending on their subtype and on the
extent of fat intake.Generalitat de Catalunya FI_B 00256Canadian Institutes of Health Research (CIHR)Consejo Interinstitucional de Ciencia y Tecnologia (CICYT)European Commission AGL2016-75329-RCIBEROBN from the Instituto de Salud Carlos III
ISCIII from the Ministerio de Ciencia, Innovacion y Universidades, (AEI/FEDER, UE)Generalitat de Catalunya 2017SGR196CIBER Fisiopatologia de la Obesidad y Nutricion (CIBERobn)Instituto de Salud Carlos III (ISCIII), through the Fondo de Investigacion para la Salud (FIS)European Commission PI13/00673
PI13/00492
PI13/00272
PI13/01123
PI13/00462
PI13/00233
PI13/02184
PI13/00728
PI13/01090
PI13/01056
PI14/01722
PI14/00636
PI14/00618
PI14/00696
PI14/01206
PI14/01919
PI14/00853
PI14/01374Especial Action Project entitled Implementacion y evaluacion de una intervencion intensiva sobre la actividad fisica Cohorte PREDIMED-Plus grantEuropean Research Council (ERC)
European Commission 340918Recercaixa grant 2013ACUP00194Junta de Andalucia PI0458/2013
PS0358/2016
PI0137/2018Generalitat Valenciana
European Commission PROMETEO/2017/017SEMERGEN grant, Fundacio la Marato de TV3 PI044003Generalitat de Catalunya 2017 SGR 1717Ministerio de Ciencia, Innovacion y Universidades AGL2016-75329-R"FOLIUM" program within the FUTURMed project within Fundacio Institut d'Investigacio Sanitaria Illes BalearsICREA under the ICREA Academia programmeThe European Regional Development Fund PI17/01347
PI17/00525
PI17/01827
PI17/00532
PI17/00215
PI17/01441
PI17/00508
PI17/01732
PI17/00926
PI19/00781
CB06/03
CB12/03European Commission PI14/00972
PI14/00728
PI14/01471
PI16/00473
PI16/00662
PI16/01873
PI16/01094
PI16/00501
PI16/00533
PI16/00381
PI16/00366
PI16/01522
PI16/01120
PI17/00764
PI17/01183
PI17/00855
FPU17/00513
CD17/0012
Kinematics of Galactic Centre clouds shaped by shear-seeded solenoidal turbulence
The Central Molecular Zone (CMZ; the central ∼500 pc of the Galaxy) is a kinematically unusual environment relative to the Galactic disc, with high velocity dispersions and a steep size-linewidth relation of the molecular clouds. In addition, the CMZ region has a significantly lower star formation rate (SFR) than expected by its large amount of dense gas. An important factor in explaining the low SFR is the turbulent state of the star-forming gas, which seems to be dominated by rotational modes. However, the turbulence driving mechanism remains unclear. In this work, we investigate how the Galactic gravitational potential affects the turbulence in CMZ clouds. We focus on the CMZ cloud G0.253+0.016 (‘the Brick’), which is very quiescent and unlikely to be kinematically dominated by stellar feedback. We demonstrate that several kinematic properties of the Brick arise naturally in a cloud-scale hydrodynamics simulation that takes into account the Galactic gravitational potential. These properties include the line-of-sight velocity distribution, the steepened size-linewidth relation, and the predominantly solenoidal nature of the turbulence. Within the simulation, these properties result from the Galactic shear in combination with the cloud’s gravitational collapse. This is a strong indication that the Galactic gravitational potential plays a crucial role in shaping the CMZ gas kinematics, and is a major contributor to suppressing the SFR by inducing predominantly solenoidal turbulent modes
Best Practice Guide for Positive Parenting. A resource for practitioners working with families
[spa] El modo en que se concibe el ejercicio de la parentalidad ha cambiado sustancialmente en
nuestra sociedad. Ello no sólo se debe a la gran
variedad de formas familiares y diversidad de
culturas que conviven actualmente en su seno,
sino también a un cambio conceptual que afecta
al núcleo básico de la tarea parental. Nos referimos
a la necesidad de sustituir el concepto de
autoridad parental, centrado únicamente en la
necesidad de lograr metas de obediencia y disciplina
en los hijos e hijas, por otro más complejo y
demandante como es el concepto de responsabilidad
parental. Según este concepto, la cuestión
clave no es si las figuras parentales deben ejercer
la autoridad para que sus hijos/as les obedezcan,
sino cómo ejercerla de modo responsable para
que se preserven los derechos de los mismos, sin
menoscabar los de padres y madres, y se fomenten
sus capacidades críticas y de participación
en el proceso de socialización, al mismo tiempo
que se promueve progresivamente su autonomía
y contribución a la vida comunitaria.
Ante este cambio cualitativo en la manera de
entender las responsabilidades parentales, se
alzan muchas voces de desánimo entre los propios
padres y madres, quienes en ocasiones se
ven impotentes en su tarea al no saber cómo actuar
para lograr metas educativas tan complejas
y sentir, al mismo tiempo, que están perdiendo
capacidades de control sobre sus hijos e hijas.
En otras ocasiones, el desánimo y el estrés ante
la tarea parental no surge por no saber llevarla a
cabo sino por no poder hacerlo adecuadamente
debido a la situación de la persona que educa en
solitario o en pareja sin contar con redes de apoyo
apropiadas. Esto crea situaciones límite que
repercuten negativamente en todos y cada uno
de los miembros de la familia, especialmente en
los más vulnerables.[eng] Our conception of what parenting should look like has changed considerably in our society. This is due not only to the large variety of family structures and the diversity of cultures that currently co-exist in our society, but also to a shift in mindset that touches the very heart of the parenting task. This can be expressed as the need to replace the concept of parental authority, which focuses solely on meeting aims related to the child’s obedience and discipline, with the much more complex and demanding concept of parental responsibility. Here, the key question is not whether the parent figure should exert the necessary authority to ensure a child’s obedience. Rather, it is about how this authority can be exerted responsibly in a way that protects the child’s rights - without of course neglecting the mother’s and father’s rights - and that fosters the child’s skills in critical thinking and participation in the socialisation process, while at the same time progressively fostering the child’s autonomy and contribution to community life. There has been much concern expressed in response to this qualitative shift in how a parent’s responsibilities are viewed, including amongst mothers and fathers themselves. Parents often feel powerless to act, as they do not know how to achieve such complex parenting goals, and feel like they are losing control over their children. Other times, feelings of discouragement and stress arise not because parents do not how to go about the task of parenting, but rather because they find themselves unable to do so, as may be the case for single parents or couples raising children without the necessary support networks. This can lead to extreme situations which can have a negative impact on the entire family, and especially its most vulnerable members
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