566 research outputs found
Plan de Negocio: LA REPISA.
El desarrollo de un plan de negocios con la finalidad de alcanzar mejores niveles de producción y rentabilidad analizando la demanda del mercado en la Empresa La Repisa, dedicada a la producción y comercialización de muebles hechos a base de polines o pallets con diseños personalizados y originales específicamente para interiores, exteriores y proyectos o negocios
SARS-CoV2 infection: the role of cytokines in COVID-19 disease
Elsevier concede permiso para que toda su investigación relacionada con COVID-19 que esté disponible en el centro de recursos COVID-19 -incluido el contenido de esta investigación- esté inmediatamente disponible en PubMed Central y otros repositorios financiados con fondos públicos, como la base de datos COVID de la OMS, con derechos para su reutilización y análisis de investigación sin restricciones en cualquier forma o por cualquier medio con reconocimiento de la fuente original. Estos permisos son concedidos gratuitamente por Elsevier mientras permanezca activo el centro de recursos COVID-19.COVID-19 disease, caused by infection with SARS-CoV-2, is related to a series of physiopathological mechanisms that mobilize a wide variety of biomolecules, mainly immunological in nature. In the most severe cases, the prognosis can be markedly worsened by the hyperproduction of mainly proinflammatory cytokines, such as IL-1, IL-6, IL-12, IFN-γ, and TNF-α, preferentially targeting lung tissue. This study reviews published data on alterations in the expression of different cytokines in patients with COVID-19 who require admission to an intensive care unit. Data on the implication of cytokines in this disease and their effect on outcomes will support the design of more effective approaches to the management of COVID-19.Este estudio ha contado con el apoyo del grupo de investigación BIO277 (Junta de Andalucía) y del Departamento de Enfermería de la Universidad de Granada
Neuroleadership: a new way for happiness management
In a post-pandemic era, managers and leaders have a role to enable the changes needed to make workplaces happier and more productive. This paper aims to analyse the role of neuroleadership in the application of happiness management. Two research questions are proposed: what do we know about neuroleadership? and what role can neuroleadership play in happiness management? A mixed methodology is applied. A bibliometric technique is used to identify the main topics studied in neuroleadership. An in-depth analysis and logical reasoning are applied to propose a neuroleadership research roadmap and to present some research pathways for neuroleadership for happiness management. A neuroleadership research roadmap is proposed, considering the approaches, practices/actions, and purposes. It is observed that the consideration of the management of emotions and cognitive processes in the work environment is attracting interest to develop a leadership focused on making better workplaces. A new line of action focused on the management of happiness is emerging. In addition, neuroleadership is presented as a new way of understanding management. Their combined application can mark a before and after in business management, and for that, a proposal of future research lines and questions is developed. This paper presents four future research pathways-perspectives, reasons, adoption and implementation, and results-for studying neuroleadership for happiness management.14 página
Different Sources of Mesenchymal Stem Cells for Tissue Regeneration: A Guide to Identifying the Most Favorable One in Orthopedics and Dentistry Applications
The success of regenerative medicine in various clinical applications depends on the
appropriate selection of the source of mesenchymal stem cells (MSCs). Indeed, the source conditions,
the quality and quantity of MSCs, have an influence on the growth factors, cytokines, extracellular
vesicles, and secrete bioactive factors of the regenerative milieu, thus influencing the clinical result.
Thus, optimal source selection should harmonize this complex setting and ensure a well-personalized
and effective treatment. Mesenchymal stem cells (MSCs) can be obtained from several sources,
including bone marrow and adipose tissue, already used in orthopedic regenerative applications.
In this sense, for bone, dental, and oral injuries, MSCs could provide an innovative and effective
therapy. The present review aims to compare the properties (proliferation, migration, clonogenicity,
angiogenic capacity, differentiation potential, and secretome) of MSCs derived from bone marrow,
adipose tissue, and dental tissue to enable clinicians to select the best source of MSCs for their
clinical application in bone and oral tissue regeneration to delineate new translational perspectives.
A review of the literature was conducted using the search enginesWeb of Science, Pubmed, Scopus,
and Google Scholar. An analysis of different publications showed that all sources compared (bone
marrow mesenchymal stem cells (BM-MSCs), adipose tissue mesenchymal stem cells (AT-MSCs),
and dental tissue mesenchymal stem cells (DT-MSCs)) are good options to promote proper migration
and angiogenesis, and they turn out to be useful for gingival, dental pulp, bone, and periodontal
regeneration. In particular, DT-MSCs have better proliferation rates and AT and G-MSC sources
showed higher clonogenicity. MSCs from bone marrow, widely used in orthopedic regenerative
medicine, are preferable for their differentiation ability. Considering all the properties among sources,
BM-MSCs, AT-MSCs, and DT-MSCs present as potential candidates for oral and dental regeneration.Junta de Andalucia"5 per mille" research grant 73042
Evaluating Membranes for Bone Regeneration
This work was supported by: 1)the Ministry of Economy and Competitiveness and European Regional Development Fund [Project MAT2017-85999-P MINECO/AEI/FEDER/UE],2) University of Granada/Regional Government of Andalusia Research Fund from Spain and European Regional Development Fund (A-BIO-157-UGR-18/FEDER).This research is part of M.T-O.’s PhD research study.Objectives:Maxillofacial bone defectsare the main hindering conditions for traditional dental implant strategies. Guided Bone Regeneration (GBR) is used to handle this situation. The principle of GBR is to use a membrane to prevent the colonization of soft tissue cells of the bone defect and favors the migration of osteogenic linages. Currentmembranes do not completely fulfill the requirements that an optimal membrane should have, sometimes resulting in non-predictable results. Thus, the need to develop an ideal membrane to perform this duty is clear. Recent developments in bio-manufacturing are driving innovations in membranes technology permitting the active participation of the membrane in the healing and regenerative process trough native tissue mimicking, drug-delivery and cells interaction, away from being a passive barrier. New membranes features need specific evaluation techniques, beyond the International Standard for membrane materials (last reviewed in 2004), being this the rationale for the present review.Nanotechnology application has completely shifted the way of analyzing structural characterization. New progresses on osteoimmmunomodulation have also switched the understanding of cells-membranes interaction. Data and Sources:To propose an updated protocol for GBR membranes evaluation, critical reading of therelevant published literature was carried out after a MEDLINE/PubMed database search. Conclusions:The main findings are that a potential active membrane should be assessed in its nanostructure, physicochemical and nanomechanical properties,bioactivityand antibacterial,osteoblasts proliferation, differentiation and mineralization. Immunomodulationtesting for macrophages recruitmentand M2 phenotype promotion in osteoblasts co-culture has to beachieved to completely analyze membranes/tissue interactions.Ministry of Economy and Competitiveness and European Regional Development Fund [Project MAT2017-85999-P MINECO/AEI/FEDER/UE]University of Granada/Regional Government of Andalusia Research Fund from Spain and European Regional Development Fund (A-BIO-157-UGR-18/FEDER
Role of Vitamin D in the Metabolic Syndrome
This study was supported by research group BIO277 (Junta de Andalucía) and
the Department of Nursing (University of Granada).The prevalence of hypovitaminosis D has risen in developed countries over the past few years in association with lifestyle changes and an increase in unhealthy habits. Vitamin D deficiency has been implicated in various diseases, including metabolic syndrome (MetS), which is clinically defined by a set of metabolic and vascular disorders. The objective of this study was to review scientific evidence on the relationship between MetS and vitamin D deficiency to support the development of prevention strategies and health education programs. An inverse relationship has been reported between plasma vitamin D concentrations and the features that define MetS, i.e., elevated serum concentrations of glucose, total cholesterol, low-density lipoproteins, triglycerides, glycosylated hemoglobin, and a high body mass index. Numerous studies have described the benefits of vitamin D supplementation to improve outcomes in individuals with MetS. Interventions to maintain optimal vitamin D concentrations are proposed as a preventive strategy against MetS.Junta de AndaluciaDepartment of Nursing (University of Granada
Biological properties and therapeutic applications of garlic and its components
This study was supported by research group BIO277 (Junta de Andalucia) and Department of Nursing (University of Granada).Garlic is one of the most widely employed condiments in cooking. It has also been used since ancient
times in traditional plant-based medicine, largely based on its organosulfur compounds. The objective of
this study was to provide updated information on the biological and therapeutic garlic properties. Garlic
has been found to possess important biological properties with high therapeutic potential, which is
influenced by the mode of its utilization, preparation, and extraction. It has been attributed with antioxidant,
anti-inflammatory, and immunomodulatory capacities. Garlic, in particular its organosulfur compounds,
can maintain immune system homeostasis through positive effects on immune cells, especially
by regulating cytokine proliferation and expression. This may underlie their usefulness in the treatment of
infectious and tumor processes. These compounds can also offer vascular benefits by regulating lipid
metabolism or by exerting antihypertensive and antiaggregant effects. However, further clinical trials are
warranted to confirm the therapeutic potential of garlic and its derivatives.Department of Nursing (University of Granada)Junta de Andaluci
Continuous abatement of methane coupled with ectoine production by Methylomicrobium alcaliphilum 20Z in stirred tank reactors: A step further towards greenhouse gas biorefineries
This study demonstrates for the first time the feasibility of producing ectoine (a high added value osmoprotectant intensively used in the cosmetic industry) during the continuous abatement of diluted emissions of methane by Methylomicrobium alcaliphilum 20Z in stirred tank reactors under non-sterile conditions. An increase in NaCl concentration in the cultivation broth from 3 to 6% increased the intra-cellular ectoine yield by a factor of 2 (from 16.5 to 37.4 mg ectoine (g biomass)−1), while high stirring rates (600 rpm) entailed a detrimental cellular stress and 3 times lower ectoine yields (5.6 mg ectoine (g biomass)−1) compared to process operation at 300 rpm. An increase in Cu2+ concentration from 0.05 to 25 μM enhanced methane abatement by a factor of 2 (up to elimination capacities of 24.5 g m−3 h−1), did not enhance intra-cellular ectoine production but promoted the excretion to the cultivation broth of 20% of the total ectoine synthesized regardless of the NaCl concentration and stirring rate. The results obtained by culture hybridization with the specific probe Mγ1004 showed that Methylomicrobium alcaliphilum 20Z accounted for more than 80% of the total bacterial population in most experimental runs. This work confirmed the technical feasibility of a new generation of biorefineries based on the abatement of diluted CH4 emissions using extremophile methanotrophs.2019-03-21Ministerio de Economía y Competitividad (CTM2015-70442-R project and Red NOVEDAR)Unión Europea-FEDER Funding Program y Junta de Castilla y León (hD Grant contract Nº E-47-2014-0140696 y UIC71
Impact of bisphosphonates on the proliferation and gene expression of human fibroblasts
The aim of this study was to elucidate the role of fibroblasts in bisphosphonate-related
osteonecrosis of the jaw (BRONJ), evaluating the effect of zoledronate, alendronate, and
ibandronate on the proliferation of fibroblasts and on their expression of genes essential for
fibroblast physiology. Human CCD-1064Sk epithelial fibroblast cells were incubated in culture
medium with 10-5, 10-7, or 10-9 M zoledronate, alendronate, or ibandronate. The proliferative
capacity of fibroblasts was determined by spectrophotometry (MTT) at 24 of culture. Real-time
polymerase chain reaction (RT-PCR) was used to study the effects of BPs at a dose of 10-9 M on the
expression of FGF, CTGF, TGF-β1, TGFβR1, TGFβR2, TGFβR3, DDR2, α-actin, fibronectin,
decorin, and elastin. Fibroblasts proliferation was significantly increased at the lowest dose (10-9M)
of each BP but was not affected at the higher doses (10-5 and 10-7M). The proliferation increase may
be related to the rise in TGF-β1 and TGFβR1 expression detected after the treatment of cells with
10-9M of zoledronate, alendronate, or ibandronate. However, the expression of CTGF, DDR2,
α-actin, fibronectin, and decorin decreased versus controls. The results of this in vitro study indicate
that a very low BP dose (10-9 M) can significantly affect the physiology of fibroblasts, increasing their
proliferative capacity and modulating the expression of multiple genes involved in their growth and
differentiation
Inter-group and Inter-individual variability in working memory from childhood to emerging adulthood
This report is a cross-sectional study aiming to establish the status of age inter-group and individual variability for Working Memory (WM) for the three WM components: Phonological loop (PL), Visuo-spatial Sketchpad (VSS) and Central executive (CE). The direct scores of the CE, the PL and the VSS were obtained in a sample of 258 subjects between 6 and 26 years. The obtained results indicate an increase of direct scores with age that was modeled by an age inverse function. The absolute age inter-group variability increased with age while the relative variability was constant across ages. The WM individual developmental variability showed that although a single principal component would explain the total variability, there was a closer relationship between the development of CE and PL with respect to VSS. The obtained results suggest that the range of WM relative competence is preserved along development which would favour the ecological adaptive value of WM across ages
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