66 research outputs found
Chapter Distribution Diagrams and Graphical Methods to Determine or to Use the Stoichiometric Coefficients of Acid-Base and Complexation Reactions
Computer networking & communication
The Conditions Needed for a Buffer to Set the pH in a System
It is a known fact that buffer systems are widely used in industry and in diverse laboratories to maintain the pH of a system within desired limits, occasionally narrow. Hence, the aim of the present work is to study the buffer capacity and buffer efficacy in order to determine the useful conditions to impose the pH on a given system. This study is based on the electroneutrality and component balance equations for a mixture of protons polyreceptors. The added volume equations were established, V, for strong acids or bases, as well as the buffer capacity equations with dilution effect, β
dil, and the buffer efficacy, Îľ, considering that the analyte contains a mixture of the species of the same polyacid system or of various polyacid systems. The Îľ index is introduced to define the performance of a buffer solution and to find out for certain, whether the buffer is adequate or not to set the pH of a system, given the proper conditions and characteristics
Bioavailability and biotransformation of linolenic acid from basil seed oil as a novel source of omega-3 fatty acids tested on a rat experimental model
Basil is an aromatic herb with a high concentration of bioactive compounds. The oil extracted from its
seeds is a good source of Îą-linolenic acid (ALA) and also provides substantial amounts of linoleic acid
(LA). This study aimed to test the bioavailability of the oil derived from basil seeds and its effects on
different physiological parameters using 7â15% dietary inclusion levels. Furthermore, the assimilation of
LA and ALA and their transformation in long-chain polyunsaturated fatty acids (LC-PUFAs) have been
studied. Digestive utilization of total fat from basil seed oil (BSO) was high and similar to that of olive oil
used as a control. Consumption of BSO resulted in increased LA and ALA levels of the plasma, liver, and
erythrocyte membrane. In addition, the transformation of LA to arachidonic acid (ARA) was decreased by
the high dietary intake of ALA which redirected the pathway of the Î-6 desaturase enzyme towards the
transformation of ALA into eicosapentaenoic acid (EPA). No alterations of hematological and plasma biochemical
parameters were found for the 7 and 10% dietary inclusion levels of BSO, whereas a decrease in
the platelet count and an increase in total- and HDL-cholesterol as well as plasma alkaline phosphatase
(ALP) were found for a 15% BSO dose. In conclusion, BSO is a good source of ALA to be transformed into
EPA and decrease the precursor of the pro-inflammatory molecule ARA. This effect on the levels of EPA
in different tissues offers potential for its use as a dietary supplement, novel functional food, or a constituent
of nutraceutical formulations to treat different pathologies.Spanish GovernmentEuropean Commission PTQ-17-09172
RTC-2017-6540-1
RTI2018-100934-B-I00
RTC2019-006870-1Andalusian Government AGR145
CTS164
CTS-10
Anemonia sulcata and Its Symbiont Symbiodinium as a Source of Anti-Tumor and Anti-Oxoxidant Compounds for Colon Cancer Therapy: A Preliminary in Vitro Study
Simple Summary: Colorectal cancer is one of the most frequent types of cancer in the population.
Recently, invertebrate marine animals have been investigated for the presence of natural products
which can damage tumor cells, prevent their spread to other tissues or avoid cancer develop. We
analyzed the anemone Anemonia sulcata with and without the presence of its microalgal symbiont
(Symbiodinium) as a source of bioactive molecules for the colorectal cancer therapy and prevention.
Colon cancer tumor cells were exposed to Anemone extracts observing a remarkable cell death and
a great antioxidant capacity. These preliminary results support that Anemonia sulcata could be a
source of bioactive compounds against colorectal cancer and that the absence of its symbiont may
enhance these properties. Further studies will be necessary to define the bioactive compounds of
Anemonia sulcata and their mechanisms of action.
Abstract: Recently, invertebrate marine species have been investigated for the presence of natural
products with antitumor activity. We analyzed the invertebrate Anemonia sulcata with (W) and without
(W/O) the presence of its microalgal symbiont Symbiodinium as a source of bioactive compounds
that may be applied in the therapy and/or prevention of colorectal cancer (CRC). Animals were
mechanically homogenized and subjected to ethanolic extraction. The proximate composition and
fatty acid profile were determined. In addition, an in vitro digestion was performed to study the
potentially dialyzable fraction. The antioxidant and antitumor activity of the samples and the digestion
products were analyzed in CRC cells in vitro. Our results show a high concentration of
polyunsaturated fatty acid in the anemone and a great antioxidant capacity, which demonstrated
the ability to prevent cell death and a high antitumor activity of the crude homogenates against
CRC cells and multicellular tumor spheroids, especially W/O symbiont. These preliminary results
support that Anemonia sulcata could be a source of bioactive compounds with antioxidant and antitumor
potential against CRC and that the absence of its symbiont may enhance these properties.
Further studies will be necessary to define the bioactive compounds of Anemonia sulcata and their
mechanisms of action.International Excellence Campus of the Sea (CEI.MAR)
CEIJ-007
CEIJ-001
Antitumor Effect of the Ethanolic Extract from Seeds of Euphorbia lathyris in Colorectal Cancer
The seeds of Euphorbia lathyris have been used in traditional medicine to treat various
medical conditions. However, neither all of their active biocompounds nor the molecular mechanisms
underlying their therapeutic effects have been described. A new ethanolic extract of defatted flour
from mature seeds of Euphorbia lathyris showed a high total polyphenol content and significant
antioxidant activity. Chromatographic analysis showed that esculetin, euphorbetin, gaultherin, and
kaempferol-3-rutinoside were the most abundant polyphenolic bioactive compounds. Antiproliferative assays showed a high and selective antitumor activity against colon cancer cell lines (T84
and HCT-15). In addition, a significant antiproliferative activity against glioblastoma multiforme
cells was also demonstrated. Its mechanism of action to induce cell death was mediated by the
overexpression of caspases 9, 3, and 8, and by activation of autophagy. Interestingly, a reduction
in the migration capacity of colon cancer cells and a significant antiangiogenic effect on human
umbilical vein endothelial cells were also demonstrated. Finally, the extract significantly reduced the
subpopulations of cancer stem cells. This extract could be the basis to develop new therapeutic strategies for the treatment of colon cancer, although further experiments will be necessary to determine
its in vivo effects.Granada University (project PSE/17/002), Ministerio de
Ciencia e InnovaciĂłn (project RTC-2017-6540-1) and by the CTS-107 and AGR145 Groups
La gestiĂłn de la instituciĂłn educativa y su vĂnculo con la comunidad
With the purpose of deepening in the transcendental complex relationship between education management and the link with the community, this study proposed as objective analyze the management of Rafael HernĂĄndez Madriz school and Santiago Crespo Calvo School, Liceo Nocturno de Ciudad Colon, San Jose de la MontaĂąa High School, and Liceo Ambientalista de Horquetas with respect to the link with the community of the educational context. Different schools were selected belonging to different communal contexts and offer more widely through a qualitative study the scopes that management of education involves regarding the relationships with their community to achieve institutional goals. Among the findings of the study emphasizes the importance of the management of education with the community to which it belongs in the achievement of the educational objectives.Con el propĂłsito de profundizar en la compleja y transcendental relaciĂłn entre la gestiĂłn de la educaciĂłn y el vĂnculo con la comunidad, se propuso el presente estudio como objetivo a analizar la gestiĂłn de los centros educativos Unidad PedagĂłgica Rafael HernĂĄndez Madriz, Escuela Santiago Crespo Calvo, Liceo Nocturno de Ciudad ColĂłn, Colegio San JosĂŠ de la MontaĂąa y Liceo Ambientalista de Horquetas, con respecto al vĂnculo con la comunidad del contexto educativo. Se seleccionaron diferentes centros educativos que pertenecen a contextos comunales distintos y poder ofrecer con mayor amplitud, mediante un estudio cualitativo, los alcances que la gestiĂłn de la educaciĂłn conlleva con respecto a las relaciones que se estructuran con su comunidad para lograr los objetivos institucionales. Dentro de las conclusiones del estudio del resalta la importancia de la gestiĂłn de la educaciĂłn con la comunidad a la cual pertenece en el logro de los objetivos educativos
Discourse Analysis and Terminology in Languages for Specific Purposes
Aquest importantĂssim recull contĂŠ estudis i reflexions sobre temes rellevants en la recerca sobre LSP: anglès mèdic, el llenguatge de la publicitat i periodĂstic, telecomunicacions i terminologia informĂ tica, llenguatge comercial i jurĂdic... Malgrat que gran part dels treballs aplegats es refereixen a l'anglès, tambĂŠ hi ha que tracten l'alemany, francès i altres llengĂźes.
ContĂŠ textos en anglès, francĂŠs, portuguès i castellĂ
Effectiveness of an intervention for improving drug prescription in primary care patients with multimorbidity and polypharmacy:Study protocol of a cluster randomized clinical trial (Multi-PAP project)
This study was funded by the Fondo de Investigaciones Sanitarias ISCIII (Grant Numbers PI15/00276, PI15/00572, PI15/00996), REDISSEC (Project Numbers RD12/0001/0012, RD16/0001/0005), and the European Regional Development Fund ("A way to build Europe").Background: Multimorbidity is associated with negative effects both on people's health and on healthcare systems. A key problem linked to multimorbidity is polypharmacy, which in turn is associated with increased risk of partly preventable adverse effects, including mortality. The Ariadne principles describe a model of care based on a thorough assessment of diseases, treatments (and potential interactions), clinical status, context and preferences of patients with multimorbidity, with the aim of prioritizing and sharing realistic treatment goals that guide an individualized management. The aim of this study is to evaluate the effectiveness of a complex intervention that implements the Ariadne principles in a population of young-old patients with multimorbidity and polypharmacy. The intervention seeks to improve the appropriateness of prescribing in primary care (PC), as measured by the medication appropriateness index (MAI) score at 6 and 12months, as compared with usual care. Methods/Design: Design:pragmatic cluster randomized clinical trial. Unit of randomization: family physician (FP). Unit of analysis: patient. Scope: PC health centres in three autonomous communities: Aragon, Madrid, and Andalusia (Spain). Population: patients aged 65-74years with multimorbidity (âĽ3 chronic diseases) and polypharmacy (âĽ5 drugs prescribed in âĽ3months). Sample size: n=400 (200 per study arm). Intervention: complex intervention based on the implementation of the Ariadne principles with two components: (1) FP training and (2) FP-patient interview. Outcomes: MAI score, health services use, quality of life (Euroqol 5D-5L), pharmacotherapy and adherence to treatment (Morisky-Green, Haynes-Sackett), and clinical and socio-demographic variables. Statistical analysis: primary outcome is the difference in MAI score between T0 and T1 and corresponding 95% confidence interval. Adjustment for confounding factors will be performed by multilevel analysis. All analyses will be carried out in accordance with the intention-to-treat principle. Discussion: It is essential to provide evidence concerning interventions on PC patients with polypharmacy and multimorbidity, conducted in the context of routine clinical practice, and involving young-old patients with significant potential for preventing negative health outcomes. Trial registration: Clinicaltrials.gov, NCT02866799Publisher PDFPeer reviewe
Track D Social Science, Human Rights and Political Science
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138414/1/jia218442.pd
Chapter Distribution Diagrams and Graphical Methods to Determine or to Use the Stoichiometric Coefficients of Acid-Base and Complexation Reactions
Computer networking & communication
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