22 research outputs found
SĂntesis y caracterizaciĂłn de matrices de sĂlice porosa por el mĂ©todo sol-gel para soporte de fĂĄrmaco.
En los Ășltimos años, el estudio de los materiales cerĂĄmicos para ser empleados como vehĂculos de fĂĄrmacos en las tecnologĂas de liberaciĂłn sostenida, se ha incrementado considerablemente. El objetivo de este trabajo fue estudiar el efecto de los tensoactivos bromuro de cetiltrimetilamonio (CTAB) y Pluronic P123 (P123), en las propiedades texturales de la sĂlice para ser utilizada como soporte para la liberaciĂłn sostenida de fĂĄrmacos. Los materiales fueron caracterizados por tĂ©cnicas de espectroscopia infrarroja
con transformada de Fourier, difracciĂłn de rayos X, microscopia electrĂłnica de barrido, fisisorciĂłn de nitrĂłgeno y anĂĄlisis termogravimĂ©trico y tĂ©rmico diferencial. Se determinĂł que el ĂĄrea superficial de la sĂlice aumenta con el uso de CTAB y P123, logrando incrementos de hasta el doble de los valores presentados por los materiales sintetizados sin tensoactivo, ademĂĄs que los materiales obtenidos con P123 a pH 3 presentaron mayor uniformidad de poro, con tamaño correspondiente al orden mesoporoso. Concluyendo que las condiciones de sĂntesis, que incluyen el empleo de tensoactivos, modifican las propiedades de la sĂlice, generando matrices con diferente ĂĄrea superficial y diversos tamaños de partĂcula y de poro, lo cual les da potencial para incorporar distintos fĂĄrmacos y liberarlos de forma sostenida
Benthic Fauna of Littoral and Deep-Sea Habitats of the Alboran Sea: A Hotspot of Biodiversity
En prens
Persistence of COVID-19 Symptoms after Recovery in Mexican Population
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the
coronavirus disease (COVID-19), a highly contagious infectious disease that has caused many deaths
worldwide. Despite global efforts, it continues to cause great losses, and leaving multiple unknowns
that we must resolve in order to face the pandemic more effectively. One of the questions that has
arisen recently is what happens, after recovering from COVID-19. For this reason, the objective of
this study is to identify the risk of presenting persistent symptoms in recovered from COVID-19.
This case-control study was conducted in one state of Mexico. Initially the data were obtained
from the participants, through a questionnaire about symptoms that they had at the moment of the
interview. Initially were captured the collected data, to make a dataset. After the pre-processed using
the R project tool to eliminate outliers or missing data. Obtained finally a total of 219 participants,
141 recovered and 78 controls. It was used confidence level of 90% and a margin of error of 7%.
From results it was obtained that all symptoms have an associated risk in those recovered. The relative
risk of the selected symptoms in the recovered patients goes from 3 to 22 times, being infinite for the
case of dyspnea, due to the fact that there is no control that presents this symptom at the moment of
the interview, followed by the nausea and the anosmia with a RR of 8.5. Therefore, public health
strategies must be rethought, to treat or rehabilitate, avoiding chronic problems in patients recovered
from COVID-19
Trends in incidence, mortality and survival in women with breast cancer from 1985 to 2012 in Granada, Spain: a population-based study
The incidence of breast cancer has increased since the 1970s. Despite favorable trends in prognosis,
the role of changes in clinical practice and the introduction of screening remain controversial. We examined breast
cancer trends to shed light on their determinants Overall, age-adjusted (European Standard Population) incidence rates increased from 48.0 cases Ă 100,000
women in 1985â1989 to 83.4 in 2008â2012, with an annual percentage change (APC) of 2.5% (95%CI, 2.1â2.9) for
1985â2012. The greatest increase was in women younger than 40 years (APC 3.5, 95%CI, 2.4â4.8). For 2000â2012
the incidence trend increased only for stage I tumors (APC 3.8, 95%CI, 1.9â5.8). Overall age-adjusted breast cancer
mortality decreased (APC â 1, 95%CI, â 1.4 â â 0.5), as did mortality in the 50â69 year age group (APC â 1.3, 95%CI,
â 2.2 â â 0.4). Age-standardized net survival increased from 67.5% at 5 years in 1985â1989 to 83.7% in 2010â2012.
All age groups younger than 70 years showed a similar evolution. Five-year net survival rates were 96.6% for
patients with tumors diagnosed in stage I, 88.2% for stage II, 62.5% for stage III and 23.3% for stage IV. Breast cancer incidence is increasing â a reflection of the evolution of risk factors and increasing
diagnostic pressure. After screening was introduced, the incidence of stage I tumors increased, with no decrease in
the incidence of more advanced stages. Reductions were seen for overall mortality and mortality in the 50â69 year
age group, but no changes were found after screening implementation. Survival trends have evolved favorably
except for the 70â84 year age group and for metastatic tumors.This study was supported by a grant from the AcciĂłn EstratĂ©gica en Salud
plan for the High Resolution Project on Prognosis and Care of Cancer
Patients (No. AC14/00036) awarded by the Spanish Ministry of Economy and
Competitiveness and co-funded by the European Regional Development
Fund (ERDF)
QCD and strongly coupled gauge theories : challenges and perspectives
We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.Peer reviewe
HE-LHC: The High-Energy Large Hadron Collider â Future Circular Collider Conceptual Design Report Volume 4
In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100 km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the third volume of the FCC Conceptual Design Report, devoted to the hadron collider FCC-hh. It summarizes the FCC-hh physics discovery opportunities, presents the FCC-hh accelerator design, performance reach, and staged operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the FCC-hh design aims at significantly extending the energy frontier to 100 TeV. Its unprecedented centre-of-mass collision energy will make the FCC-hh a unique instrument to explore physics beyond the Standard Model, offering great direct sensitivity to new physics and discoveries
Metabolic syndrome and its associated factors in older adults : a secondary analysis of SABE Colombia in 2015
Q4Q2Adulto mayorBackground: Understanding the metabolic syndrome (MetS) prevalence at the national level is important to
develop effective programs and strategies to prevent and control MetS. This study aimed to analyze the
prevalence of MetS according to gender and aging stage, and its association with potential factors in older
individuals âĄ60 years of age in Colombia.
Methods: The data for this study came from a secondary cross-sectional, nationally representative SABE study
Survey on Health, Well-Being, and Aging in Colombia, 2015. A total of 1637 participants (60.7% women,
70.5 â 7.9 years) from 86 Colombian municipalities participated. A structured questionnaire was used to collect
data on socio-demography, lifestyle, and self-report medical conditions. Measurements included anthropometric
(weight, waist circumference, body mass index), sarcopenia ââproxyââ status (calf circumference) handgrip
strength levels, high-density lipoprotein cholesterol, triglycerides, fasting glucose, and blood pressure. Univariate and multiple regression models were established as part of the main analysis.
Results: Using the harmonized Joint Scientific Statement criteria, MetS was present in 54.9% of the
study population, with a higher prevalence among females than males (59.8% vs. 47.3%). Individuals who
were cigarette smokers (odds ratio [OR] = 1.5; 95% confidence interval [CI] = 1.0â2.4; P = 0.034), female
gender (OR = 1.3; 95% CI = 1.0â1.8; P = 0.020), and sarcopenia ââproxyââ (OR = 1.6; 95% CI = 1.0â2.5;
P = 0.026) were more likely to have a higher prevalence estimate of MetS, after controlling for relevant
covariates.
Conclusions: Overall prevalence of MetS among older adults in Colombia is high. Smoking, female gender,
and sarcopenia ââproxyââ status are associated with MetS. These results suggested that MetS is still a serious
public burden in Colombia, and screening for promotion of healthy lifestyle and nutrition counseling should be
offered routinely in old age.https://orcid.org/0000-0002-8584-3191https://orcid.org/0000-0001-5680-7880N/
Spanish Guidelines for Diagnosis, Management, Treatment, and Prevention of DRESS Syndrome.
Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is a complex multisystemic severe drug hypersensitivity reaction whose diagnosis and management are troublesome. DRESS syndrome requires management by various specialists. The correct identification of the culprit drug is essential to ensure safe future therapeutic options for the patient. There are no previous Spanish guidelines or consensus statements on DRESS syndrome. Objective: To draft a review and guidelines on the clinical diagnosis, allergy work-up, management, treatment, and prevention of DRESS syndrome in light of currently available scientific evidence and the experience of experts from multiple disciplines. These guidelines were drafted by a panel of allergy specialists from the Drug Allergy Committee of the Spanish Society of Allergy and Clinical Immunology (SEAIC), together with other medical specialists involved in the management of DRESS syndrome and researchers from the PIELenRed consortium. A review was conducted of scientific papers on DRESS syndrome, and the expert panel evaluated the quality of the evidence of the literature and provided grades of recommendation. Whenever evidence was lacking, a consensus was reached among the experts. The first Spanish guidelines on DRESS syndrome are now being published. Important aspects have been addressed, including practical recommendations about clinical diagnosis, identification of the culprit drug through the Spanish pharmacovigilance system algorithm, and the allergy work-up. Recommendations are provided on management, treatment, and prevention. Algorithms for the management of DRESS in the acute and recovery phases have been drawn up. Expert consensus-based stepwise guidelines for the management and treatment of DRESS syndrome are provided