Características coligadas al estilo de vida en pacientes adultos mayores en un Centro de Salud de los Andes en el Perú: Characteristics related to lifestyle in elderly patients in a Health Center of the Andes in Peru

Introduction: A correct lifestyle is vital in older adults to reduce their risk of diseases and loss of functionality. Objective: To determine the lifestyles of elderly patients in a Health Center in the Peruvian Andes. Method: Observational, descriptive study with elderly patients from a health center. We worked with a previously collected database. Descriptive statistics were used. The study was approved by the institutional ethics committee. Results: Of the 74 patients evaluated, the mean age was 75.4 years and 52% were females. The mean BMI was 24.8 kg / m2 and that of the abdominal circumference was 86.8 cm. 32.7% had a visual acuity of 70 in the right eye and 36.4% of 50 in the left eye. Glucose (mg / dL), hemoglobin (g / dL) and uric acid (mg / dL) had a median of 97, 15.4 and 7; respectively. Triglycerides and cholesterol had a mean of 182.2 mg / dL and 189.9 mg / dL; respectively. 5.4% of men had reactive PSA. 4% had diabetes, 21.6% hypertension, and 22.2% anemia; while 70.3% consumed alcohol, 6.8% smoked and 89.2% consumed soda. Conclusions: Some indicators of poor lifestyle were found, such as the consumption of alcohol and soft drinks, as well as indicators of conditions related to a poor lifestyle such as an average BMI close to being overweight, high triglycerides and cholesterol.Introducción: Un correcto estilo de vida es vital en los adultos mayores para reducir su riesgo de enfermedades y de perder funcionalidad. Objetivo: Determinar las características coligadas al estilo de vida en pacientes adultos mayores en un Centro de Salud de los andes peruanos. Método: Estudio observacional, descriptivo con pacientes adultos mayores de un centro de salud. Se trabajó con una base de datos previamente recolectada. Se usó estadística descriptiva. El estudio fue aprobado por el comité de ética institucional. Resultados: De los 74 pacientes evaluados, la media de edad fue de 75,4 años y el 52% fue de sexo femenino. La media del IMC fue de 24,8 Kg/m2 y la del perímetro abdominal de 86,8 cm. 32,7% tuvieron una agudeza visual de 70 en el ojo derecho y 36,4% de 50 en el ojo izquierdo. La glucosa (mg/dL), hemoglobina (g/dL) y el ácido úrico (mg/dL) tuvieron una mediana de 97, 15,4 y 7; respectivamente. Los triglicéridos y el colesterol tuvieron una media de 182,2 mg/dL y 189,9 mg/dL; respectivamente. Un 5,4% de hombres tuvieron PSA reactivo. 4% tuvieron diabetes, 21,6% hipertensión arterial y 22,2% anemia; mientras que 70,3% consumía alcohol, 6,8% tenía tabaquismo y 89,2% consumía bebidas gaseosas. Conclusiones: Se encontraron algunos indicadores de mal estilo de vida, como el consumo de alcohol y bebidas gaseosas, así como indicadores de condiciones relacionadas a un mal estilo de vida como una media del IMC cercano al sobrepeso, de triglicéridos y colesterol elevados

Unsaturated fatty acids are inhibitors of bacterial conjugation

This report describes a high-throughput assay to identify substances that reduce the frequency of conjugation in Gram-negative bacteria. Bacterial conjugation is largely responsible for the spread of multiple antibiotic resistances in human pathogens. Conjugation inhibitors may provide a means to control the spread of antibiotic resistance. An automated conjugation assay was developed that used plasmid R388 and a laboratory strain of Escherichia coli as a model system, and bioluminescence as a reporter for conjugation activity. Frequencies of conjugation could be measured continuously in real time by the amount of light produced, and thus the effects of inhibitory compounds could be determined quantitatively. A control assay, run in parallel, allowed elimination of compounds affecting cell growth, plasmid stability or gene expression. The automated conjugation assay was used to screen a database of more than 12 000 microbial extracts known to contain a wide variety of bioactive compounds (the NatChem library). The initial hit rate was 1·4 %. From these, 48 extracts containing active compounds and representing a variety of organisms and extraction conditions were subjected to fractionation (24 fractions per extract). The 52 most active fractions were subjected to a secondary analysis to determine the range of plasmid inhibition. Plasmids R388, R1 and RP4 were used as representatives of a variety of plasmid transfer systems. Only one fraction (of complex composition) affected transfer of all three plasmids, while four other fractions were active against two of them. Two separate compounds were identified from these fractions: linoleic acid and dehydrocrepenynic acid. Downstream analysis showed that the chemical class of unsaturated fatty acids act as true inhibitors of conjugation

Multimorbidity patterns in hospitalized older patients: Associations among chronic diseases and geriatric syndromes

Background/Objectives The clinical status of older individuals with multimorbidity can be further complicated by concomitant geriatric syndromes. This study explores multimorbidity patterns, encompassing both chronic diseases and geriatric syndromes, in geriatric patients attended in an acute hospital setting. Design Retrospective observational study. Setting Unit of Social and Clinical Assessment (UVSS), Miguel Servet University Hospital (HUMS), Zaragoza (Spain). Year, 2011. Participants A total of 924 hospitalized patients aged 65 years or older. Measurements Data on patients'' clinical, functional, cognitive and social statuses were gathered through comprehensive geriatric assessments. To identify diseases and/or geriatric syndromes that cluster into patterns, an exploratory factor analysis was applied, stratifying by sex. The factors can be interpreted as multimorbidity patterns, i.e., diseases non-randomly associated with each other within the study population. The resulting patterns were clinically assessed by several physicians. Results The mean age of the study population was 82.1 years (SD 7.2). Multimorbidity burden was lower in men under 80 years, but increased in those over 80. Immobility, urinary incontinence, hypertension, falls, dementia, cognitive decline, diabetes and arrhythmia were among the 10 most frequent health problems in both sexes, with prevalence rates above 20%. Four multimorbidity patterns were identified that were present in both sexes: Cardiovascular, Induced Dependency, Falls and Osteoarticular. The number of conditions comprising these patterns was similar in men and women. Conclusion The existence of specific multimorbidity patterns in geriatric patients, such as the Induced Dependency and Falls patterns, may facilitate the early detection of vulnerability to stressors, thus helping to avoid negative health outcomes such as functional disability

Density functional theory calculations of the carbon ELNES of small diameter armchair and zigzag nanotubes: core-hole, curvature and momentum transfer orientation effects

We perform density functional theory calculations on a series of armchair and zigzag nanotubes of diameters less than 1nm using the all-electron Full-Potential(-Linearised)-Augmented-Plane-Wave (FPLAPW) method. Emphasis is laid on the effects of curvature, the electron beam orientation and the inclusion of the core-hole on the carbon electron energy loss K-edge. The electron energy loss near-edge spectra of all the studied tubes show strong curvature effects compared to that of flat graphene. The curvature induced $\pi-\sigma$ hybridisation is shown to have a more drastic effect on the electronic properties of zigzag tubes than on those of armchair tubes. We show that the core-hole effect must be accounted for in order to correctly reproduce electron energy loss measurements. We also find that, the energy loss near edge spectra of these carbon systems are dominantly dipole selected and that they can be expressed simply as a proportionality with the local momentum projected density of states, thus portraying the weak energy dependence of the transition matrix elements. Compared to graphite, the ELNES of carbon nanotubes show a reduced anisotropy.Comment: 25 pages, 15 figures, revtex4 submitted for publication to Phys. Rev.

Site-Specific Integration of Foreign DNA into Minimal Bacterial and Human Target Sequences Mediated by a Conjugative Relaxase

This is an open-access article distributed under the terms of the Creative Commons Attribution License.[Background]: Bacterial conjugation is a mechanism for horizontal DNA transfer between bacteria which requires cell to cell contact, usually mediated by self-transmissible plasmids. A protein known as relaxase is responsible for the processing of DNA during bacterial conjugation. TrwC, the relaxase of conjugative plasmid R388, is also able to catalyze site-specific integration of the transferred DNA into a copy of its target, the origin of transfer (oriT), present in a recipient plasmid. This reaction confers TrwC a high biotechnological potential as a tool for genomic engineering. [Methodology/Principal Findings]: We have characterized this reaction by conjugal mobilization of a suicide plasmid to a recipient cell with an oriT-containing plasmid, selecting for the cointegrates. Proteins TrwA and IHF enhanced integration frequency. TrwC could also catalyze integration when it is expressed from the recipient cell. Both Y18 and Y26 catalytic tyrosil residues were essential to perform the reaction, while TrwC DNA helicase activity was dispensable. The target DNA could be reduced to 17 bp encompassing TrwC nicking and binding sites. Two human genomic sequences resembling the 17 bp segment were accepted as targets for TrwC-mediated site-specific integration. TrwC could also integrate the incoming DNA molecule into an oriT copy present in the recipient chromosome. [Conclusions/Significance]: The results support a model for TrwC-mediated site-specific integration. This reaction may allow R388 to integrate into the genome of non-permissive hosts upon conjugative transfer. Also, the ability to act on target sequences present in the human genome underscores the biotechnological potential of conjugative relaxase TrwC as a site-specific integrase for genomic modification of human cells.This work was supported by grant BIO2008-00133 from the Spanish Ministry of Science and Innovation to ML. CGP was a recipient of a predoctoral fellowship from the University of Cantabria, Spain.Peer reviewe

An analytical benchmark and a Mathematica program for MD codes: Testing LAMMPS on the 2nd generation Brenner potential

N.M.P. is supported by the European Research Council (ERC StG Ideas 2011 BIHSNAM No. 279985, ERC PoC 2015 SILKENE No. 693670) and by the European Commission under the Graphene Flagship (WP14 ‘Polymer Composites’, No. 696656). S.R. is supported by the Technology Development Program to solve Climate Changes of the National Research Foundation (NRF) No. 2015M1A2A2056561, funded by the Ministry of Science, ICT & Future Planning

Carbon nanotubes as excitonic insulators

Fifty years ago Walter Kohn speculated that a zero-gap semiconductor might be unstable against the spontaneous generation of excitons-electron-hole pairs bound together by Coulomb attraction. The reconstructed ground state would then open a gap breaking the symmetry of the underlying lattice, a genuine consequence of electronic correlations. Here we show that this excitonic insulator is realized in zero-gap carbon nanotubes by performing first-principles calculations through many-body perturbation theory as well as quantum Monte Carlo. The excitonic order modulates the charge between the two carbon sublattices opening an experimentally observable gap, which scales as the inverse of the tube radius and weakly depends on the axial magnetic field. Our findings call into question the Luttinger liquid paradigm for nanotubes and provide tests to experimentally discriminate between excitonic and Mott insulators