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https://www.readbyqxmd.com/read/28934501/model-based-design-of-rna-hybridization-networks-implemented-in-living-cells
#1
Guillermo Rodrigo, Satya Prakash, Shensi Shen, Eszter Majer, José-Antonio Daròs, Alfonso Jaramillo
Synthetic gene circuits allow the behavior of living cells to be reprogrammed, and non-coding small RNAs (sRNAs) are increasingly being used as programmable regulators of gene expression. However, sRNAs (natural or synthetic) are generally used to regulate single target genes, while complex dynamic behaviors would require networks of sRNAs regulating each other. Here, we report a strategy for implementing such networks that exploits hybridization reactions carried out exclusively by multifaceted sRNAs that are both targets of and triggers for other sRNAs...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28934481/automatic-identification-of-informative-regions-with-epigenomic-changes-associated-to-hematopoiesis
#2
Enrique Carrillo-de-Santa-Pau, David Juan, Vera Pancaldi, Felipe Were, Ignacio Martin-Subero, Daniel Rico, Alfonso Valencia
Hematopoiesis is one of the best characterized biological systems but the connection between chromatin changes and lineage differentiation is not yet well understood. We have developed a bioinformatic workflow to generate a chromatin space that allows to classify 42 human healthy blood epigenomes from the BLUEPRINT, NIH ROADMAP and ENCODE consortia by their cell type. This approach let us to distinguish different cells types based on their epigenomic profiles, thus recapitulating important aspects of human hematopoiesis...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28934076/delayed-urinary-symptoms-induced-by-ketamine
#3
María Robles-Martínez, Alfonso C Abad, Violeta Pérez-Rodríguez, Elena Ros-Cucurull, Abderraman Esojo, Carlos Roncero
One of the side-effects of ketamine abuse is genito-urinary damage. This report describes a case of a former ketamine user who presented with urinary symptoms associated with ketamine years after stopping consumption. This was a 26-year-old male with a history of ketamine abuse. He started treatment for alcohol dependence at age 19. He smoked marijuana daily and denied any other drug use. During the follow-up, urinary symptoms were evidenced (dysuria, frequency, urgency, incontinence, nocturia, hematuria, and suprapubic pain)...
September 21, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28932739/agonist-binding-to-chemosensory-receptors-a-systematic-bioinformatics-analysis
#4
Fabrizio Fierro, Eda Suku, Mercedes Alfonso-Prieto, Alejandro Giorgetti, Sven Cichon, Paolo Carloni
Human G-protein coupled receptors (hGPCRs) constitute a large and highly pharmaceutically relevant membrane receptor superfamily. About half of the hGPCRs' family members are chemosensory receptors, involved in bitter taste and olfaction, along with a variety of other physiological processes. Hence these receptors constitute promising targets for pharmaceutical intervention. Molecular modeling has been so far the most important tool to get insights on agonist binding and receptor activation. Here we investigate both aspects by bioinformatics-based predictions across all bitter taste and odorant receptors for which site-directed mutagenesis data are available...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28932537/the-role-of-video-assisted-thoracoscopic-surgery-for-management-of-symptomatic-pleural-effusion-after-coronary-artery-bypass-surgery-a-best-evidence-topic-report
#5
REVIEW
Alfonso Fiorelli, Francesco Caronia, Aldo Prencipe, Mario Santini, Brendon Stiles
A best evidence topic in thoracic surgery was written addressing whether video-assisted thoracoscopic surgery (VATS) talc pleurodesis could be justified in patients with pleural effusion (PE) after coronary artery bypass graft (CABG) surgery and no-responded to repeated thoracentesis. Ten papers were identified to answer the question. Of these, two were case-series study including ≥4 patients, 7 retrospective analytical studies, and one observational study but no randomized controlled trial (RCTs) was included in the analysis...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28931896/association-between-plasma-gamma-glutamyltransferase-fractions-and-metabolic-syndrome-among-hypertensive-patients
#6
Maria Franzini, Ilenia Scataglini, Angelo Ricchiuti, Vanna Fierabracci, Aldo Paolicchi, Alfonso Pompella, Giulia Dell'Omo, Roberto Pedrinelli, Alessandro Corti
Among the risk factors associated to metabolic syndrome (MetS), hypertension shows the highest prevalence in Italy. We investigated the relationship between the newly identified serum γ-glutamyltransferase (GGT) fractions, b- s- m- f-GGT, and risk factors associated to MetS in hypertensive patients. A total of ninety-five consecutive hypertensive patients were enrolled. GGT fractions were analysed by gel-filtration chromatography, and hepatic steatosis was evaluated by ultrasound. MetS was diagnosed in 36% of patients...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28929768/protein-corona-analysis-of-silver-nanoparticles-links-to-their-cellular-effects
#7
Sabine Juling, Alicia Niedzwiecka, Linda Böhmert, Dajana Lichtenstein, Soeren Selve, Albert Braeuning, Andreas F Thünemann, Eberhard Krause, Alfonso Lampen
The breadth of applications of nanoparticles and the access to food-associated consumer products containing nano-sized materials lead to oral human exposure to such particles. In biological fluids nanoparticles dynamically interact with biomolecules and form a protein corona. Knowledge about the protein corona is of great interest for understanding the molecular effects of particles as well as their fate inside the human body. We used a mass spectrometry-based toxicoproteomics approach to elucidate mechanisms of toxicity of silver nanoparticles and to comprehensively characterize the protein corona formed around silver nanoparticles in Caco-2 human intestinal epithelial cells...
September 20, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28929515/treatment-of-hepatitis-c-virus-infection-with-direct-acting-antiviral-drugs-is-safe-and-effective-in-patients-with-hemoglobinopathies
#8
Raffaella Origa, Maria Laura Ponti, Aldo Filosa, Alfonso Galeota Lanza, Antonio Piga, Giorgio Maria Saracco, Valeria Pinto, Antonino Picciotto, Paolo Rigano, Salvatore Madonia, Rosamaria Rosso, Domenico D'Ascola, Maria Domenica Cappellini, Roberta D'Ambrosio, Immacolata Tartaglione, Lucia De Franceschi, Barbara Gianesin, Vito Di Marco, Gian Luca Forni
Progression of liver fibrosis in patients with hemoglobinopathies is strongly related to the severity of iron overload and the presence of chronic hepatitis C virus (HCV) infection. Effective iron chelation therapy and HCV infection eradication may prevent liver complications. The European Association for the Study of the Liver guidelines recommend interferon-free regimens for the treatment of HCV infection in patients with hemoglobinopathies. However, data regarding the use of direct-acting antiviral drugs (DAAs) in this patient population are few...
September 20, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28927853/contrast-enhanced-ultrasound-in-the-diagnosis-of-rounded-atelectasis-a-case-report
#9
Lucía García-Alfonso, Ivan Vollmer, Mariana Benegas, Marcelo Sánchez
No abstract text is available yet for this article.
September 15, 2017: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28927285/impact-of-a-basal-bolus-insulin-regimen-on-metabolic-control-and-risk-of-hypoglycemia-in-patients-with-diabetes-undergoing-peritoneal-dialysis
#10
Ana María Gómez, Santiago Vallejo, Freddy Ardila, Oscar M Muñoz, Álvaro J Ruiz, Mauricio Sanabria, Alfonso Bunch, Elly Morros, Laura Kattah, Maira García-Jaramillo, Fabián León-Vargas
INTRODUCTION: Clinical interventional studies in diabetes mellitus usually exclude patients undergoing peritoneal dialysis (PD). This study evaluates the impact of an educational program and a basal-bolus insulin regimen on the blood glucose level control and risk of hypoglycemia in this population. METHODS: A before-and-after study was conducted in type 1 and type 2 DM patients undergoing PD at the Renal Therapy Services (RTS) clinic network, Bogota, Colombia. An intervention was instituted consisting of a three-month educational program and a basal-bolus detemir (Levemir, NovoNordisk) and aspart (Novorapid, NovoNordisk) insulin regimen...
September 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28926573/self-monitoring-of-blood-pressure-in-hypertension-a-systematic-review-and-individual-patient-data-meta-analysis
#11
Katherine L Tucker, James P Sheppard, Richard Stevens, Hayden B Bosworth, Alfred Bove, Emma P Bray, Kenneth Earle, Johnson George, Marshall Godwin, Beverly B Green, Paul Hebert, F D Richard Hobbs, Ilkka Kantola, Sally M Kerry, Alfonso Leiva, David J Magid, Jonathan Mant, Karen L Margolis, Brian McKinstry, Mary Ann McLaughlin, Stefano Omboni, Olugbenga Ogedegbe, Gianfranco Parati, Nashat Qamar, Bahman P Tabaei, Juha Varis, Willem J Verberk, Bonnie J Wakefield, Richard J McManus
BACKGROUND: Self-monitoring of blood pressure (BP) appears to reduce BP in hypertension but important questions remain regarding effective implementation and which groups may benefit most. This individual patient data (IPD) meta-analysis was performed to better understand the effectiveness of BP self-monitoring to lower BP and control hypertension. METHODS AND FINDINGS: Medline, Embase, and the Cochrane Library were searched for randomised trials comparing self-monitoring to no self-monitoring in hypertensive patients (June 2016)...
September 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28925903/regulation-of-clusterin-gene-expression
#12
Marilina Garcia-Aranda, Alfonso Serrano, Maximino Redondo
Clusterin is a multifunctional glycoprotein whose role in cells has generated a great controversy in recent years. Since its discovery, numerous studies have linked clusterin expression deregulation with various physio-pathological processes such as cancer or Alzheimer's disease. Although the results of such investigations have sometimes been contradictory, mainly due to the dichotomous role of clusterin isoforms, it has been demonstrated that this protein is involved in diverse cellular processes, including apoptosis, cell cycle regulation, DNA repair or the acquisition of cell resistance against multiple conventional therapies...
September 18, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28923877/interplay-among-resistance-profiles-high-risk-clones-and-virulence-in-the-caenorhabditis-elegans-pseudomonas-aeruginosa-infection-model
#13
Irina Sánchez-Diener, Laura Zamorano, Carla López-Causapé, Gabriel Cabot, Xavier Mulet, Carmen Peña, Rosa Del Campo, Rafael Cantón, Antonio Doménech-Sánchez, Luis Martínez-Martínez, Susana C Arcos, Alfonso Navas, Antonio Oliver
The increasing prevalence of nosocomial infections produced by multidrug-resistant (MDR) or extensively drug-resistant (XDR) Pseudomonas aeruginosa is frequently linked to widespread international strains designated as high-risk clones. In this work we attempted to decipher the interplay between resistance profiles, high-risk clones and virulence, testing a large (n=140) collection of well characterized P. aeruginosa isolates from different sources (bloodstream infections, nosocomial outbreaks, cystic fibrosis and environment) in a Caenorhabditis elegans infection model...
September 18, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28923429/frequency-of-auditory-involvement-and-of-associated-factors-in-patients-with-juvenile-idiopathic-arthritis
#14
Adriana Ivonne Céspedes Cruz, Myriam Méndez Núñez, Eunice Solís Vallejo, Maritza Zeferino Cruz, Alfonso Ragnar Torres Jiménez, Verónica Ocampo Sánchez, Beatriz Flores Meza, Norma Quintana Ruiz
INTRODUCTION: Juvenile idiopathic arthritis (JIA) is a chronic autoimmune disease characterized by the presence of arthritis in children under 16 years of age for more than 6 weeks in the absence of any other known cause. The extra-articular manifestations, especially in the audiovestibular system, are related to the involvement of the joints of the ossicular chain as a result of the inflammatory process in the synovium. Previous clinical studies in pediatric patients have shown conductive or sensorineural hearing loss...
September 8, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28918629/dosimetric-quantification-of-coating-related-uptake-of-silver-nanoparticles
#15
Dajana Lichtenstein, Thomas Meyer, Linda Böhmert, Sabine Juling, Christoph Fahrenson, Soeren Selve, Andreas F Thünemann, Jan Meijer, Irina Estrela-Lopis, Albert Braeuning, Alfonso Lampen
The elucidation of mechanisms underlying cellular uptake of nanoparticles is an important topic in nanotoxicological research. Most studies dealing with silver nanoparticle uptake provide only qualitative data about internalization efficiency and do not consider nanoparticle-specific dosimetry. Therefore, we performed a comprehensive comparison of the cellular uptake of differently coated silver nanoparticles of comparable size in different human intestinal Caco-2 cell-derived models to cover also the influence of the intestinal mucus barrier and uptake-specialized M-cells...
September 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28918526/coupling-population-dynamics-with-earth-system-models-the-popem-model
#16
Andrés Navarro, Raúl Moreno, Alfonso Jiménez-Alcázar, Francisco J Tapiador
Precise modeling of CO2 emissions is important for environmental research. This paper presents a new model of human population dynamics that can be embedded into ESMs (Earth System Models) to improve climate modeling. Through a system dynamics approach, we develop a cohort-component model that successfully simulates historical population dynamics with fine spatial resolution (about 1°×1°). The population projections are used to improve the estimates of CO2 emissions, thus transcending the bulk approach of existing models and allowing more realistic non-linear effects to feature in the simulations...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28917596/response-rate-to-chemotherapy-after-immune-checkpoint-inhibition-in-metastatic-urothelial-cancer
#17
Bernadett Szabados, Nick van Dijk, Yen Zhi Tang, Michiel van der Heijden, Akhila Wimalasingham, Alfonso Gomez de Liano, Simon Chowdhury, Simon Hughes, Sarah Rudman, Mark Linch, Thomas Powles
Immune checkpoint inhibitors (ICIs) are active in metastatic urothelial carcinoma (MUC). They have joined chemotherapy (CT) as a standard of care. Here, we investigate the activity of CT after progression on ICIs. Two cohorts of sequential patients with MUC were described (n=28). Cohort A received first-line ICIs followed by CT after progression. Cohort B received CT after failure of first-line platinum-based CT followed by ICIs. Response rate (RR) to CT was assessed using Response Evaluation Criteria in Solid Tumors (RECIST v1...
September 13, 2017: European Urology
https://www.readbyqxmd.com/read/28917273/mechanisms-and-risk-factors-of-thrombosis-in-cancer
#18
REVIEW
Anna Falanga, Laura Russo, Viola Milesi, Alfonso Vignoli
The close relationship between cancer and thrombosis is known since more than a century. Venous thromboembolism (VTE) may be the first manifestation of an occult malignancy in an otherwise healthy individual. Cancer patients commonly present with abnormalities of laboratory coagulation tests, indicating an ongoing subclinical hypercoagulable condition. The results of laboratory tests demonstrate that a process of fibrin formation and removal parallels the development of malignancy, which is of particular interest since fibrin and other clotting products are important for both thrombogenesis and tumor progression...
October 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28916603/phase-2a-clinical-trial-of-mitochondrial-protection-elamipretide-during-stent-revascularization-in-patients-with-atherosclerotic-renal-artery-stenosis
#19
Ahmed Saad, Sandra M S Herrmann, Alfonso Eirin, Christopher M Ferguson, James F Glockner, Haraldur Bjarnason, Michael A McKusick, Sanjay Misra, Lilach O Lerman, Stephen C Textor
BACKGROUND: Atherosclerotic renal artery stenosis reduces renal blood flow (RBF) and amplifies stenotic kidney hypoxia. Revascularization with percutaneous transluminal renal angioplasty (PTRA) and stenting often fails to recover renal function, possibly because of ischemia/reperfusion injury developing after PTRA. Elamipretide is a mitochondrial-targeted peptide that binds to cardiolipin and stabilizes mitochondrial function. We tested the hypothesis that elamipretide plus PTRA would improve renal function, oxygenation, and RBF in patients with atherosclerotic renal artery stenosis undergoing PTRA...
September 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28916591/continuous-glucose-monitoring-in-very-preterm-infants-a-randomized-controlled-trial
#20
Alfonso Galderisi, Andrea Facchinetti, Garry M Steil, Paulina Ortiz-Rubio, Francesco Cavallin, William V Tamborlane, Eugenio Baraldi, Claudio Cobelli, Daniele Trevisanuto
BACKGROUND AND OBJECTIVES: Impaired glucose control in very preterm infants is associated with increased morbidity, mortality, and poor neurologic outcome. Strategies based on insulin titration have been unsuccessful in achieving euglycemia in absence of an increase in hypoglycemia and mortality. We sought to assess whether glucose administration guided by continuous glucose monitoring (CGM) is more effective than standard of care blood glucose monitoring in maintaining euglycemia in very preterm infants...
September 15, 2017: Pediatrics
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