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https://www.readbyqxmd.com/read/28639934/first-description-of-methyltransferases-in-extensively-drug-resistant-klebsiella-pneumoniae-isolates-from-saudi-arabia
#1
Baha Abdalhamid, Nasreldin Elhadi, Samar Albunayan, Khaldoon Alsamman, Reem Aljindan
PURPOSE: The resistance determinants for carbapenems, fluoroquinolones and aminoglycosides were characterized in 16 extensively drug-resistant Klebsiella pneumoniae (XDRKPN) strains collected from Saudi hospitals during 2014. METHODOLOGY: PCR and sequencing were used to detect: blaKPC, blaNDM, blaVIM, blaIMP-1,blaOXA-48, blaCTX-M, blaTEM, blaSHV and ampC for β-lactam resistance; qnrA, qnrB, qnrS, aac(6')-Ib-cr, qepA and mutations of gyrA and parC for fluoroquinolone resistance; and aacA4, aacC2, aadA1, aphA6, armA and rmtB for aminoglycoside resistance...
June 22, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28618522/role-of-length-polydispersity-in-the-phase-behavior-of-freely-rotating-hard-rectangle-fluids
#2
Ariel Díaz-De Armas, Yuri Martínez-Ratón
We use the density-functional formalism, in particular the scaled-particle theory, applied to a length-polydisperse hard-rectangle fluid to study its phase behavior as a function of the mean particle aspect ratio κ_{0} and polydispersity Δ_{0}. The numerical solutions of the coexistence equations are calculated by transforming the original problem with infinite degrees of freedoms to a finite set of equations for the amplitudes of the Fourier expansion of the moments of the density profiles. We divide the study into two parts...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28614492/clinical-improvement-in-patients-with-borderline-personality-disorder-after-treatment-with-repetitive-transcranial-magnetic-stimulation-preliminary-results
#3
Julian Reyes-López, Josefina Ricardo-Garcell, Gabriela Armas-Castañeda, María García-Anaya, Iván Arango-De Montis, Jorge J González-Olvera, Francisco Pellicer
Objective: Current treatment of borderline personality disorder (BPD) consists of psychotherapy and pharmacological interventions. However, the use of repetitive transcranial magnetic stimulation (rTMS) could be beneficial to improve some BPD symptoms. The objective of this study was to evaluate clinical improvement in patients with BPD after application of rTMS over the right or left dorsolateral prefrontal cortex (DLPFC). Method: Twenty-nine patients with BPD from the National Institute of Psychiatry, Mexico, were randomized in two groups to receive 15 sessions of rTMS applied over the right (1 Hz, n=15) or left (5 Hz, n=14) DLPFC...
June 12, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28605183/directed-self-assembly-of-colloidal-particles-onto-nematic-liquid-crystalline-defects-engineered-by-chemically-patterned-surfaces
#4
Xiao Li, Julio C Armas-Pérez, Juan P Hernández-Ortiz, Christopher G Arges, Xiaoying Liu, José A Martínez-González, Leonidas E Ocola, Camille Bishop, Helou Xie, Juan J de Pablo, Paul F Nealey
In exploiting topological defects of liquid crystals as the targeting sites for trapping colloidal objects, previous work has relied on topographic features with uniform anchoring to create defects, achieving limited density and spacing of particles. We report a generalizable strategy to create topological defects on chemically patterned surfaces to assemble particles in precisely defined locations with a tunable interparticle distance at nanoscale dimensions. Informed by experimental observations and numerical simulations that indicate that liquid crystals, confined between a homeotropic-anchoring surface and a surface with lithographically defined planar-anchoring stripes in a homeotropic-anchoring background, display splay-bend deformation, we successfully create pairs of defects and subsequently trap particles with controlled spacing by designing patterns of intersecting stripes aligned at 45° with homeotropic-anchoring gaps at the intersections...
June 15, 2017: ACS Nano
https://www.readbyqxmd.com/read/28584896/importance-of-tissue-sampling-laboratory-methods-and-patient-characteristics-for-detection-of-pneumocystis-in-autopsied-lungs-of-non-immunosuppressed-individuals
#5
REVIEW
S L Vargas, C Ponce, R Bustamante, E Calderón, G Nevez, Y De Armas, O Matos, R F Miller, M J Gallo
To understand the epidemiological significance of Pneumocystis detection in a lung tissue sample of non-immunosuppressed individuals, we examined sampling procedures, laboratory methodology, and patient characteristics of autopsy series reported in the literature. Number of tissue specimens, DNA-extraction procedures, age and underlying diagnosis highly influence yield and are critical to understand yield differences of Pneumocystis among reports of pulmonary colonization in immunocompetent individuals.
June 5, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28574580/echographic-features-and-perinatal-outcomes-in-fetuses-with-congenital-absence-of-ductus-venosus
#6
Raquel Garcia-Delgado, Raquel Garcia-Rodriguez, Azahar Romero Requejo, Marta Armas Roca, Luciana Obreros Zegarra, Margarita Medina Castellano, Jose A Garcia Hernandez
The purpose of this study was to describe the echographic features and perinatal outcomes of fetuses with absence of ductus venosus (ADV) MATERIAL AND METHODS: Retrospective review of 10 cases with ADV diagnosed by prenatal ultrasonography between January 2014 and February 2016 at a single referral center. Prenatal findings, umbilical shunting type, perinatal outcomes, and autopsy reports were reviewed RESULTS: A total of 11 491 fetuses underwent a first and second trimester screening during the study period...
June 2, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28549745/-anti-ageing-therapies-in-alzheimer-s-disease
#7
Gara S Alonso Abreu, José M Brito Armas, Rafael Castro Fuentes
Alzheimer's disease is the most common cause of dementia in the elderly population. Currently, there are no effective treatments to prevent or delay the natural course of the disease. Numerous studies have provided information about the molecular processes underlying biological ageing and, perhaps more importantly, potential interventions to slow ageing and promote healthy longevity in laboratory model systems. The main issue addressed in this review is whether an intervention that has anti-ageing properties can alter the appearance and/or progression of Alzheimer's disease, a disease in which age is the biggest risk factor...
May 23, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28545452/a-simple-fast-and-inexpensive-method-for-mutation-scanning-of-cftr-gene
#8
Juan Emilio Figueredo Lago, Anny Armas Cayarga, Yaimé Josefina González González, Teresa Collazo Mesa
BACKGROUND: Mutation scanning methods in Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene may not distinguish between a Cystic Fibrosis (CF) causing mutation and a benign variant. We have developed a simple and fast method for scanning 14 selected CF-causing mutations which have high frequency in Latin America. METHODS: In a group of 35 samples coming from CF patients previously characterized and using two allele-specific real-time multiplex PCRs targeting wild-type and mutant alleles respectively, we detect the presence of mutations by analyzing the Ct variation...
May 25, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28541459/is-the-linkage-of-census-and-health-data-justified-views-from-a-public-panel-of-the-scottish-health-and-ethnicity-linkage-study
#9
Anne Douglas, Hester J T Ward, Raj Bhopal, Theresa Kirkpatrick, Arma Sayed-Rafiq, Laurence Gruer
Background: Using routine health data for research aimed at improving health requires the public's awareness and trust. The Scottish Health and Ethnicity Linkage study explores variations in health between ethnic groups. We aimed to establish a public panel to obtain their views on its methods, findings and dissemination, including use of routine health data without individual opt-in consent. Methods: Adult applicants were sought via a range of sources, aiming for a balance of age, gender and ethnicity...
May 25, 2017: Journal of Public Health
https://www.readbyqxmd.com/read/28537914/epigenomic-study-identifies-a-novel-mesenchyme-homeobox2-gli1-transcription-axis-involved-in-cancer-drug-resistance-overall-survival-and-therapy-prognosis-in-lung-cancer-patients
#10
Leonel Armas-López, Patricia Piña-Sánchez, Oscar Arrieta, Enrique Guzman de Alba, Blanca Ortiz-Quintero, Patricio Santillán-Doherty, David C Christiani, Joaquín Zúñiga, Federico Ávila-Moreno
Several homeobox-related gene (HOX) transcription factors such as mesenchyme HOX-2 (MEOX2) have previously been associated with cancer drug resistance, malignant progression and/or clinical prognostic responses in lung cancer patients; however, the mechanisms involved in these responses have yet to be elucidated. Here, an epigenomic strategy was implemented to identify novel MEOX2 gene promoter transcription targets and propose a new molecular mechanism underlying lung cancer drug resistance and poor clinical prognosis...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28532410/malaria-mortality-characterization-and-the-relationship-between-malaria-mortality-and-climate-in-chimoio-mozambique
#11
João Luís Ferrão, Jorge M Mendes, Marco Painho, Sara Zacarias
BACKGROUND: The United Nation's sustainable development goal for 2030 is to eradicate the global malaria epidemic, primarily as the disease continues to be one of the major concerns for public health in sub-Saharan Africa. In 2015, the region accounted for 90% of malaria deaths. Mozambique recorded a malaria mortality rate of 42.75 (per 100,000). In Chimoio, Mozambique's fifth largest city, malaria is the fourth leading cause of death (9.4%). Few data on malaria mortality exists in Mozambique, particularly in relation to Chimoio...
May 22, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28506446/serum-24-25-dihydroxyvitamin-d3-response-to-native-vitamin-d2%C3%A2-and%C3%A2-d3-supplementation-in-patients-with-chronic-kidney-disease%C3%A2-on%C3%A2-hemodialysis
#12
Laura A Graeff-Armas, Martin Kaufmann, Elizabeth Lyden, Glenville Jones
BACKGROUND & AIMS: While vitamin D deficiency is common in patients with end stage renal disease on dialysis and treatment with Vitamin D2 and Vitamin D3 is becoming increasingly common in these patients, little is known about 24,25(OH)2D3 metabolite production. Some authors report that the CYP24A1 enzyme is upregulated in CKD, but reports of low serum levels of 24,25(OH)2D3 in these patients bring this into question. Lack of substrate or increased clearance of the metabolite have been proposed as possible causes...
April 30, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28473945/does-testing-more-frequently-shorten-the-time-to-detect-disease-progression
#13
Johannes Ledolter, Randy H Kardon
PURPOSE: With the rise of smartphone devices to monitor health status remotely, it is tempting to conclude that sampling more often will provide a more sensitive means of detecting changes in health status earlier over time, when interventions may improve outcomes. METHODS: The answer to this question is derived in the context of a model where observations are generated from a linear-trend model with independent as well as autocorrelated autoregressive-moving average, or ARMA(1,1), errors...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28463661/group-b-streptococcal-bacteriuria-during-pregnancy-as-a-risk-factor-for-maternal-intrapartum-colonization-a-prospective-cohort-study
#14
Mar Olga Pérez-Moreno, Ester Picó-Plana, Jesús Grande-Armas, Mª José Centelles-Serrano, Mercé Arasa-Subero, Núria Colomé- Ochoa, Members Of The Study Group Gessagte Led By Mo Pérez-Moreno
PURPOSE: Current evidence is inconclusive regarding the intrapartum administration of chemoprophylaxis, merely based on the presence of group B streptococcal (GBS) bacteriuria of any colony count, in the prevention of early-onset neonatal GBS infection. The aim of this study was to assess whether GBS bacteriuria is a risk factor for intrapartum colonization (IPC) regardless of urinary concentration or the results of late third-trimester rectovaginal screening cultures (RVSCs). METHODOLOGY: Six hundred and eight pregnant women, with urine specimens cultured between May 2011 and May 2013, were enrolled in this prospective cohort study...
April 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28459816/isotopic-reconstruction-of-the-weaning-process-in-the-archaeological-population-of-can%C3%A3-mar-abajo-cuba-a-bayesian-probability-mixing-model-approach
#15
Yadira Chinique de Armas, Mirjana Roksandic, Dejana Nikitović, Roberto Rodríguez Suárez, David Smith, Nadine Kanik, Dailys García Jordá, William M Buhay
The general lack of well-preserved juvenile skeletal remains from Caribbean archaeological sites has, in the past, prevented evaluations of juvenile dietary changes. Canímar Abajo (Cuba), with a large number of well-preserved juvenile and adult skeletal remains, provided a unique opportunity to fully assess juvenile paleodiets from an ancient Caribbean population. Ages for the start and the end of weaning and possible food sources used for weaning were inferred by combining the results of two Bayesian probability models that help to reduce some of the uncertainties inherent to bone collagen isotope based paleodiet reconstructions...
2017: PloS One
https://www.readbyqxmd.com/read/28457469/severe-bleeding-caused-by-giant-gastrointestinal-stromal-tumor-of-the-jejunum
#16
José Antonio Casimiro Pérez, María Asunción Acosta Mérida, María Del Mar Callejón Cara, Manuel Artiles Armas
No abstract text is available yet for this article.
April 27, 2017: Cirugía Española
https://www.readbyqxmd.com/read/28448963/paradoxical-aging-in-hiv-immune-senescence-of-b-cells-is-most-prominent-in-young-age
#17
Stefano Rinaldi, Suresh Pallikkuth, Varghese K George, Lesley R de Armas, Rajendra Pahwa, Celeste M Sanchez, Maria Fernanda Pallin, Li Pan, Nicola Cotugno, Gordon Dickinson, Allan Rodriguez, Margaret Fischl, Maria Alcaide, Louis Gonzalez, Paolo Palma, Savita Pahwa
Combination antiretroviral therapies (cART)can lead to normal life expectancy in HIV-infected persons, and people aged >50 yrs represent the fastest growing HIV group. Although HIV and aging are independently associated with impaired humoral immunity, immune status in people aging with HIV is relatively unexplored. In this study influenza vaccination was used to probe age associated perturbations in the B cell compartment of HIV-negative "healthy controls" (HC) and virologically controlled HIV-infected participants on cART (HIV) (n=124), grouped by age as young (<40 yrs), middle-aged (40-59yrs) or old (>60 yrs)...
April 2017: Aging
https://www.readbyqxmd.com/read/28446899/clonal-spread-of-16s-rrna-methyltransferase-producing-klebsiella-pneumoniae-st37-with-high-prevalence-of-esbls-from-companion-animals-in-china
#18
Jing Xia, Liang-Xing Fang, Ke Cheng, Guo-Hao Xu, Xi-Ran Wang, Xiao-Ping Liao, Ya-Hong Liu, Jian Sun
We screened 30 Klebsiella pneumoniae isolates from dogs and cats at a single animal hospital in Guangdong Province, China. Among them, 12 K. pneumoniae strains possessed high-level resistance to amikacin and gentamicin and these were screened for 16S rRNA methyltransferase (16S-RMTase) genes. And then the genes positive isolates were detected for ESBLs (extended spectrum β-lactamases) and analyzed by pulsed-field gel electrophoresis, multilocus sequence typing, PCR-based replicon typing and plasmid analysis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28418786/evaluation-in-mice-of-the-immunogenicity-of-a-tetravalent-subunit-vaccine-candidate-against-dengue-virus-using-mucosal-and-parenteral-immunization-routes
#19
Laura Lazo Vázquez, Lázaro Gil González, Ernesto Marcos López, Yusleidi Pérez Fuentes, Lázaro Cervetto de Armas, Enma Brown Richards, Iris Valdés Prado, Edith Suzarte Portal, Karem Cobas Acosta, Melyssa Yaugel Novoa, Yaremis Romero Fernández, Gerardo Guillén Nieto, Lisset Hermida Cruz
Our group has developed a subunit vaccine candidate against Dengue virus (DENV) based on two different viral regions, the domain III of the envelope protein and the capsid protein. The chimeric proteins for each serotype (DIIIC1-4), aggregated with the oligodeoxynucleotide 39 M, form the tetravalent formulation named Tetra DIIIC. Tetra DIIIC induces a protective immune response in mice when it is inoculated by intraperitoneal route. However, if children are the main targets for a DENV vaccine, then a needle-free route of administration should be attractive and advantageous...
June 2017: Viral Immunology
https://www.readbyqxmd.com/read/28413506/active-efflux-pump-adeb-is-involved-in-multidrug-resistance-of-acinetobacter-baumannii-induced-by-antibacterial-agents
#20
Tingting Zhang, Min Wang, Yixin Xie, Xianping Li, Zhihui Dong, Yanhua Liu, Ling Wang, Min Yang, Huan Song, Hong Cao, Wei Cao
The aim of the present study was to investigate the resistance of Acinetobacter baumannii, which was induced by cefepime (FEP), cefoperazone-sulbactam (SCF), tazobactam (TZP), levofloxacin (LEV), amikacin (AK), imipenem (IPM), and ciprofloxacin (CIP), in vitro. Multi-step drug resistance selection of 16 A. baumannii strains was performed using seven antibacterial agents (FEP, TZP, CIP, AK, IPM, SCF, and LEV). The minimum inhibitory concentration (MIC) was determined using the agar dilution method. Random amplified polymorphic DNA polymerase chain reaction was performed to analyze the genotypes and the carrying rates of aac(3)-I, aac(6')-I, ant(3)-I, aph(3)-Via, OXA-23, OXA-24, AmpC, TEM-1, metallo-β-lactamase gene (IMP), armA, rmtA, rmtB, parC, gyrA and adeB...
April 2017: Experimental and Therapeutic Medicine
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