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https://www.readbyqxmd.com/read/29331909/linking-composition-of-extracellular-polymeric-substances-eps-to-the-physical-structure-and-hydraulic-resistance-of-membrane-biofilms
#1
Peter Desmond, James P Best, Eberhard Morgenroth, Nicolas Derlon
The effect of extracellular polymeric substances (EPS) on the meso-scale physical structure and hydraulic resistance of membrane biofilms during gravity driven membrane (GDM) filtration was investigated. Biofilms were developed on the surface of ultrafiltration membranes during dead-end filtration at ultra-low pressure (70 mbar). Biofilm EPS composition (total protein, polysaccharide and eDNA) was manipulated by growing biofilms under contrasting nutrient conditions. Nutrient conditions consisted of (i) a nutrient enriched condition with a nutrient ratio of 100:30:10 (C: N: P), (ii) a phosphorus limitation (C: N: P ratio: 100:30:0), and (iii) a nitrogen limitation (C: N: P ratio: 100:0:10)...
December 27, 2017: Water Research
https://www.readbyqxmd.com/read/29329522/a-game-improving-the-assembly-of-pooled-functional-metagenomics-sequence-data
#2
Matteo Chiara, Antonio Placido, Ernesto Picardi, Luigi Ruggiero Ceci, David Stephen Horner, Graziano Pesole
BACKGROUND: Expression screening of environmental DNA (eDNA) libraries is a popular approach for the identification and characterization of novel microbial enzymes with promising biotechnological properties. In such "functional metagenomics" experiments, inserts, selected on the basis of activity assays, are sequenced with high throughput sequencing technologies. Assembly is followed by gene prediction, annotation and identification of candidate genes that are subsequently evaluated for biotechnological applications...
January 12, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29329090/simultaneous-accelerated-solvent-extraction-and-hydrolysis-of-11-nor-%C3%AE-9-tetrahydrocannabinol-9-carboxylic-acid-glucuronide-in-meconium-samples-for-gas-chromatography-mass-spectrometry-analysis
#3
Cinthia de Carvalho Mantovani, Jefferson Pereira E Silva, Guilherme Forster, Rafael Menck de Almeida, Edna Maria de Albuquerque Diniz, Mauricio Yonamine
Cannabis misuse during pregnancy is associated with severe impacts on the mother and baby health, such as newborn low birth weight, growth restriction, pre-term birth, neurobehavioral and developmental deficits. In most of the cases, drug abuse is omitted or denied by the mothers. Thus, toxicological analyzes using maternal-fetal matrices takes place as a suitable tool to assess drug use. Herein, meconium was the chosen matrix to evaluate cannabis exposure through identification and quantification of 11-nor-Δ9-tetrahydrocannabinol-9-carboxylic (THCCOOH)...
January 7, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29321905/detection-and-persistence-of-environmental-dna-from-an-invasive-terrestrial-mammal
#4
Kelly E Williams, Kathryn P Huyvaert, Kurt C Vercauteren, Amy J Davis, Antoinette J Piaggio
Invasive Sus scrofa, a species commonly referred to as wild pig or feral swine, is a destructive invasive species with a rapidly expanding distribution across the United States. We used artificial wallows and small waterers to determine the minimum amount of time needed for pig eDNA to accumulate in the water source to a detectable level. We removed water from the artificial wallows and tested eDNA detection over the course of 2 weeks to understand eDNA persistence. We show that our method is sensitive enough to detect very low quantities of eDNA shed by a terrestrial mammal that has limited interaction with water...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29299272/design-and-model-based-recommendations-for-detecting-and-quantifying-an-amphibian-pathogen-in-environmental-samples
#5
Brittany A Mosher, Kathryn P Huyvaert, Tara Chestnut, Jacob L Kerby, Joseph D Madison, Larissa L Bailey
Accurate pathogen detection is essential for developing management strategies to address emerging infectious diseases, an increasingly prominent threat to wildlife. Sampling for free-living pathogens outside of their hosts has benefits for inference and study efficiency, but is still uncommon. We used a laboratory experiment to evaluate the influences of pathogen concentration, water type, and qPCR inhibitors on the detection and quantification of Batrachochytrium dendrobatidis (Bd) using water filtration. We compared results pre- and post-inhibitor removal, and assessed inferential differences when single versus multiple samples were collected across space or time...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29288180/identifying-and-understanding-the-health-and-social-care-needs-of-older-adults-with-multiple-chronic-conditions-and-their-caregivers-a-protocol-for-a-scoping-review
#6
Elana Commisso, Katherine S McGilton, Ana Patricia Ayala, Melissa K Andrew, Howard Bergman, Line Beaudet, Veronique Dubé, Mikaela Gray, Lori Hale, Margaret Keatings, Emily Gard Marshall, Janet McElhaney, Debra Morgan, Edna Parrott, Jenny Ploeg, Tara Sampalli, Douglas Stephens, Isabelle Vedel, Jennifer Walker, Walter P Wodchis, Martine T E Puts
INTRODUCTION: People are living longer; however, they are not necessarily experiencing good health and well-being as they age. Many older adults live with multiple chronic conditions (MCC), and complex health issues, which adversely affect their day-to-day functioning and overall quality of life. As a result, they frequently rely on the support of friend and/or family caregivers. Caregivers of older adults with MCC often face challenges to their own well-being and also require support...
December 28, 2017: BMJ Open
https://www.readbyqxmd.com/read/29284195/extracellular-matrix-influence-in-streptococcus-mutans-gene-expression-in-a-cariogenic-biofilm
#7
Elkin Jahir Florez Salamanca, Marlise Inêz Klein
Caries etiology is biofilm-diet dependent. Biofilms are highly dynamic and structured microbial communities enmeshed in a three-dimensional extracellular matrix. The study evaluated the expression dynamics of Streptococcus mutans genes associated with exopolysaccharides (EPS) (gtfBCD, gbpB, dexA), lipoteichoic acids (LTA) (dltABCD, SMU_775c) and extracellular DNA (eDNA) (lytST, lrgAB, ccpA) during matrix development within a mixed-species biofilm of S. mutans, Actinomyces naeslundii and Streptococcus gordonii...
December 28, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/29281630/re-emerging-and-newly-recognized-sexually-transmitted-infections-can-prior-experiences-shed-light-on-future-identification-and-control
#8
Kyle Bernstein, Virginia B Bowen, Caron R Kim, Michel J Counotte, Robert D Kirkcaldy, Edna Kara, Gail Bolan, Nicola Low, Nathalie Broutet
How do we spot the next sexually transmitted infection? Kyle Bernstein and colleagues look for lessons from past discovery.
December 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29281478/assessment-of-treatment-patterns-for-metastatic-renal-cell-carcinoma-in-brazil
#9
Paulo G Bergerot, Cristiane D Bergerot, Nazli Dizman, Stenio Zequi, Andre Fay, Yash Dara, Manuel Caitano Maia, Brendan N Cotta, Edna Prado Gonçalves, Maria Nirvana Formiga, Milena Shizue Tariki, Diego Abreu Clavijo, Toni K Choueiri, Gilberto Lopes, Sumanta K Pal
Background Although multiple therapies have emerged for the treatment of metastatic renal cell carcinoma (mRCC), it is unclear whether application of these agents is consistent in developed and developing countries. We sought to determine patterns of care for mRCC in Brazil as a representative developing country. Material and Methods A commercial database was used to acquire information pertaining to patients with mRCC receiving treatment at private or public hospitals in Brazil between March 2013 and October 2016...
December 27, 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/29280649/waist-to-height-ratio-and-its-relation-with-cardiometabolic-risk-factors-in-children-from-bucaramanga-colombia
#10
Edna Magaly Gamboa Delgado, Clara Lucía Domínguez Urrego, Doris Cristina Quintero Lesmes
BACKGROUND: Currently, the waist-to-height ratio (WHtR) has emerged as a practical and useful indicator for identifying cardiometabolic risk in child and adolescent population. OBJECTIVE: To evaluate the association between the WHtR and cardiometabolic risk factors (CMRFs) in a cohort of children in Bucaramanga, Colombia. METHODS: Analytical cross-sectional study. Child population between 6-10 years old from Bucaramanga (n = 1,282). Dependent variables: hypertension, pre-hypertension, overweight/obesity, impaired glucose, insulin resistance and dyslipidemia...
November 16, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29279788/diet-lung-function-and-asthma-exacerbations-in-puerto-rican-children
#11
Yueh-Ying Han, Erick Forno, Maria Alvarez, Angel Colón-Semidey, Edna Acosta-Perez, Glorisa Canino, Juan C Celedón
Changes in dietary patterns may partly explain the epidemic of asthma in industrialized countries. The objective of this study was to examine the relationship between dietary patterns and lung function and asthma exacerbations in Puerto Rican children. This is a case-control study of 678 Puerto Rican children (ages 6-14 years) in San Juan (Puerto Rico). All participants completed a respiratory health questionnaire and a 75-item food frequency questionnaire. Food items were aggregated into 7 groups: fruits, vegetables, grains, protein, dairy, fats, and sweets...
December 1, 2017: Pediatric Allergy, Immunology, and Pulmonology
https://www.readbyqxmd.com/read/29279188/clinical-correlates-of-negative-health-events-in-a-research-sample-with-epilepsy
#12
Neha Kumar, Kari Colon-Zimmermann, Edna Fuentes-Casiano, Hongyan Liu, Curtis Tatsuoka, Kristin A Cassidy, Mustafa Kahriman, Peijun Chen, Martha Sajatovic
AIMS: In spite of advances in care, people with epilepsy experience negative health events (NHEs), such as seizures, emergency department (ED) visits, and hospitalizations. Being able to identify characteristics that are associated with NHE risk can help inform care approaches that reduce complications and burden. This analysis using baseline data from a larger randomized epilepsy self-management clinical trial assessed the relationship between demographic and clinical variables vs. seizure-related complications among people with epilepsy...
December 23, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29259083/extracellular-dna-and-type-iv-pilus-expression-regulate-the-structure-and-kinetics-of-biofilm-formation-by-nontypeable-haemophilus-influenzae
#13
Jayajit Das, Elaine Mokrzan, Vinal Lakhani, Lucia Rosas, Joseph A Jurcisek, William C Ray, Lauren O Bakaletz
Biofilms formed in the middle ear by nontypeable Haemophilus influenzae (NTHI) are central to the chronicity, recurrence, and refractive nature of otitis media (OM). However, mechanisms that underlie the emergence of specific NTHI biofilm structures are unclear. We combined computational analysis tools and in silico modeling rooted in statistical physics with confocal imaging of NTHI biofilms formed in vitro during static culture in order to identify mechanisms that give rise to distinguishing morphological features...
December 19, 2017: MBio
https://www.readbyqxmd.com/read/29258561/a-pilot-investigation-on-dna-methylation-modifications-associated-with-complex-posttraumatic-symptoms-in-elderly-traumatized-in-childhood
#14
Zoya Marinova, Andreas Maercker, Edna Grünblatt, Tomasz K Wojdacz, Susanne Walitza
OBJECTIVE: Complex posttraumatic stress disorder (CPTSD) is a newly proposed diagnosis in the International Classification of Diseases-version 11, which is currently intensively investigated. Childhood trauma is regarded as main source of CPTSD symptoms, even in later life. Induction of DNA methylation changes by childhood trauma may contribute to its long-lasting adverse health consequences. The current study analyzed the correlation of genome-wide DNA methylation profiles with complex posttraumatic sequelae in buccal epithelial cells from 31 elderly former indentured child laborers (Verdingkinder) using the Infinium Illumina 450k Human DNA methylation chip...
December 19, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29249114/fragments-of-immunological-memory-an-interview-with-dr-berr%C3%A3-n
#15
Mónica Rodríguez-González, Saúl Oswaldo Lugo-Reyes, Edna Venegas-Montoya, Selma Cecilia Scheffler-Mendoza
No abstract text is available yet for this article.
October 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29242481/discovery-of-another-new-species-of-i-charadrahyla-i-anura-hylidae-from-the-cloud-forest-of-northern-oaxaca-m%C3%A3-xico
#16
Luis Canseco-Márquez, Cynthia Grisell Ramírez-González, Edna González-Bernal
Charadrahyla esperancensis, a new species of tree frog, is described from the cloud forest of Sierra d Juárez on the northern slopes of Oaxaca. This species is sympatric with C. nephila and is distinguished by the presence of a protuding snout with a distinctive downward slope posterior to the nostril in lateral view, with an evident rostral keel, and the flanks and anterior and posterior surfaces of limbs with yellow spots. With the discovery of this new species, the species number of the genus increases to seven and adds another species of Charadrahyla for the assemblage of anurans from northern Oaxaca...
October 3, 2017: Zootaxa
https://www.readbyqxmd.com/read/29230970/the-dnabii-family-of-proteins-is-comprised-of-the-only-nucleoid-associated-proteins-required-for-nontypeable-haemophilus-influenzae-biofilm-structure
#17
Aishwarya Devaraj, John Buzzo, Christopher J Rocco, Lauren O Bakaletz, Steven D Goodman
Biofilms play a central role in the pathobiology of otitis media (OM), bronchitis, sinusitis, conjunctivitis, and pneumonia caused by nontypeable Haemophilus influenzae (NTHI). Our previous studies show that extracellular DNA (eDNA) and DNABII proteins are essential components of biofilms formed by NTHI. The DNABII protein family includes integration host factor (IHF) and the histone-like protein HU and plays a central role in NTHI biofilm structural integrity. We demonstrated that immunological targeting of these proteins during NTHI-induced experimental OM in a chinchilla model caused rapid clearance of biofilms from the middle ear...
December 12, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/29223543/metagenomic-sequencing-of-environmental-dna-reveals-marine-faunal-assemblages-from-the-west-antarctic-peninsula
#18
Dominique A Cowart, Katherine R Murphy, C-H Christina Cheng
The West Antarctic Peninsula (WAP) is the fastest warming region in Antarctica where climate impact on the cold-adapted marine ecosystem is already visible. To monitor faunal changes in remote vast bodies of Antarctic waters, efficient and informative tools are essential. High-throughput sequencing of environmental DNA (eDNA) has emerged as one such tool for monitoring biodiversity and ecosystems, as it increases detection sensitivity of taxa, and sampling is often simpler and less costly than traditional collection methods...
December 6, 2017: Marine Genomics
https://www.readbyqxmd.com/read/29220394/a-systematic-approach-to-evaluate-the-influence-of-environmental-conditions-on-edna-detection-success-in-aquatic-ecosystems
#19
Bernhard C Stoeckle, Sebastian Beggel, Alexander F Cerwenka, Elena Motivans, Ralph Kuehn, Juergen Geist
The use of environmental DNA (eDNA) to determine the presence and distribution of aquatic organisms has become an important tool to monitor and investigate freshwater communities. The successful application of this method in the field, however, is dependent on the effectiveness of positive DNA verification, which is influenced by site-specific environmental parameters. Factors affecting eDNA concentrations in aquatic ecosystems include flow conditions, and the presence of substances that possess DNA-binding properties or inhibitory effects...
2017: PloS One
https://www.readbyqxmd.com/read/29218503/differential-alterations-in-metabolism-and-proteolysis-related-proteins-in-human-parkinson-s-disease-substantia-nigra
#20
Edna Grünblatt, Josefine Ruder, Camelia Maria Monoranu, Peter Riederer, Moussa Bh Youdim, Silvia A Mandel
Parkinson's disease is the most common neurodegenerative disorder after Alzheimer's disease, with the majority of cases being sporadic or "idiopathic". The aetiology of the sporadic form is still unknown, but there is a broad consensus that Parkinson's disease involves multiple pathways. In previous human post-mortem studies investigating substantia nigra of parkinsonian subjects, gene expression alterations in various metabolic pathways including protein folding, trafficking, aggregation, ubiquitination and oxidative stress were found...
December 7, 2017: Neurotoxicity Research
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