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https://www.readbyqxmd.com/read/29741769/contrasting-seasonal-and-aseasonal-environments-across-stages-of-the-annual-cycle-in-the-rufous-collared-sparrow-zonotrichia-capensis-differences-in-endocrine-function-proteome-and-body-condition
#1
Paulina L González-Gómez, Valentina Echeverria, Cristian F Estades, Jonathan H Perez, Jesse S Krause, Pablo Sabat, Jonathon Li, Dietmar Kültz, John C Wingfield
1.The timing and duration of life history stages (LHS) within the annual cycle can be affected by local environmental cues which are integrated through endocrine signaling mechanisms and changes in protein function. Most animals express a single LHS within a given period of the year because synchronous expression of LHSs is thought to be too costly energetically. However, in very rare and extremely stable conditions, breeding and molt have been observed to overlap extensively in Rufous-collared sparrows (Zonotrichia capensis) living in valleys of the Atacama Desert - one of the most stable and aseasonal environments on Earth...
May 9, 2018: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29733071/symmetrical-and-bilateral-basal-ganglia-calcification-case-series-and-literature-review
#2
Amado Jiménez-Ruiz, Omar Cárdenas-Sáenz, José Luis Ruiz-Sandoval
Introduction: Symmetric, bilateral basal ganglia calcification is rare finding that sometimes occurs asymptomatically. Its prevalence increases with age, and the most affected site is the globus pallidus. Report of cases: A series of seven cases with clinical and imaging diagnosis of basal ganglia calcification, recorded during the 2012 to 2016 period at the Department of Internal Medicine of the Hospital Civil de Guadalajara "Fray Antonio Alcalde, is presented...
2018: Gaceta Médica de México
https://www.readbyqxmd.com/read/29692216/laser-fenestration-of-aortic-stent-grafts-followed-by-noncompliant-vs-cutting-balloon-dilation-a-scanning-electron-microscopy-study
#3
Jing Lin, Niraj Parikh, Naval Udgiri, Shaoxia Wang, Daniel F Miller, Chaojing Li, Jean Panneton, Mark Nutley, Ze Zhang, Yunfan Huang, Jun Lu, Jingyi Zhang, Lu Wang, Robert Guidoin
PURPOSE: To examine the effects of in situ laser fenestration and subsequent balloon dilation (noncompliant vs cutting) on the graft fabric of 4 aortic stent-graft models. METHOD: In an in vitro setup, the Zenith TX2, Talent, Endurant, and Anaconda aortic stent-grafts (all made of polyester graft material) were subjected to laser fenestration with a 2.3-mm-diameter probe at low and high energy in a physiologic saline solution followed by balloon dilation of the hole...
April 1, 2018: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29671387/positioning-europe-for-the-epitranscriptomics-challenge
#4
Michael Jantsch, Alessandro Quattrone, Mary O'Connell, Mark Helm, Michaela Frye, Manuel Macias-Gonzales, Marie Ohman, Stefan Ameres, Luc Willems, Francois Fuks, Anastasis Oulas, Stepanka Vanacova, Henrik Nielsen, Cecile Bousquet-Antonelli, Yuri Motorin, Jean-Yves Roignant, Nikolaos Balatsos, Andras Dinnyes, Pavel Baranov, Vincent Kelly, Ayelet Lamm, Gideon Rechavi, Mattia Pelizzola, Janis Liepins, Irina Holodnuka Kholodnyuk, Vanessa Zammit, Duncan Ayers, Finn Drablos, John Arne Dahl, Janusz Bujnicki, Carmen Jeronimo, Raquel Almeida, Monica Neagu, Marieta Costache, Jasna Bankovic, Bojana Banovic, Jan Kyselovic, Luis Miguel Valor, Stefan Selbert, Pinar Pir, Turan Demircan, Victoria Cowling, Matthias Schäfer, Walter Rossmanith, Denis Lafontaine, Alexandre David, Clement Carre, Frank Lyko, Raffael Schaffrath, Schraga Schwartz, Andre Verdel, Arne Klungland, Elzbieta Purta, Gordana Timotijevic, Fernando Cardona, Alberto Davalos, Ester Ballana, Donal O Carroll, Jernej Ule, Rupert Fray
The genetic alphabet consists of the four letters: C, A, G, and T in DNA and C,A,G, and U in RNA. Triplets of these four letters jointly encode 20 different amino acids out of which proteins of all organisms are built. This system is universal and is found in all kingdoms of life. However, bases in DNA and RNA can be chemically modified. In DNA, around 10 different modifications are known, and those have been studied intensively over the past 20 years. Scientific studies on DNA modifications and proteins that recognize them gave rise to the large field of epigenetic and epigenomic research...
April 19, 2018: RNA Biology
https://www.readbyqxmd.com/read/29665576/radiocesium-interaction-with-clay-minerals-theory-and-simulation-advances-post-fukushima
#5
Masahiko Okumura, Sebastien Kerisit, Ian C Bourg, Laura N Lammers, Takashi Ikeda, Michel Sassi, Kevin M Rosso, Masahiko Machida
Insights at the microscopic level of the process of radiocesium adsorption and interaction with clay mineral particles have improved substantially over the past several years, triggered by pressing social issues such as management of huge amounts of waste soil accumulated after the Fukushima Dai-ichi nuclear power plant accident. In particular, computer-based molecular modeling supported by advanced hardware and algorithms has proven to be a powerful approach. Its application can now generally encompass the full complexity of clay particle adsorption sites from basal surfaces to interlayers with inserted water molecules, to edges including fresh and weathered frayed ones...
April 14, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29663556/structure-and-dynamics-of-the-extended-helix-state-of-alpha-synuclein-intrinsic-lability-of-the-linker-region
#6
Yoon-Hui Sung, David Eliezer
The Parkinson's protein alpha-synuclein binds to synaptic vesicles in vivo and adopts a highly extended helical conformation when binding to lipid vesicles in vitro. High-resolution structural analysis of alpha-synuclein bound to small lipid or detergent micelles revealed two helices connected by a non-helical linker, but corresponding studies of the vesicle-bound extended-helix state are hampered by the size and heterogeneity of the protein-vesicle complex. Here we employ fluorinated alcohols (FAs) to induce a highly helical aggregation-resistant state of alpha-synuclein in solution that resembles the vesicle-bound extended-helix state but is amenable to characterization using high-resolution solution-state NMR...
April 16, 2018: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29615068/modeling-and-rescue-of-defective-blood-brain-barrier-function-of-induced-brain-microvascular-endothelial-cells-from-childhood-cerebral-adrenoleukodystrophy-patients
#7
Catherine A A Lee, Hannah S Seo, Anibal G Armien, Frank S Bates, Jakub Tolar, Samira M Azarin
BACKGROUND: X-linked adrenoleukodystrophy (X-ALD) is caused by mutations in the ABCD1 gene. 40% of X-ALD patients will convert to the deadly childhood cerebral form (ccALD) characterized by increased permeability of the brain endothelium that constitutes the blood-brain barrier (BBB). Mutation information and molecular markers investigated to date are not predictive of conversion. Prior reports have focused on toxic metabolic byproducts and reactive oxygen species as instigators of cerebral inflammation and subsequent immune cell invasion leading to BBB breakdown...
April 4, 2018: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/29602832/intracellular-chloride-and-scaffold-protein-mo25-cooperatively-regulate-transepithelial-ion-transport-through-wnk-signaling-in-the-malpighian-tubule
#8
Qifei Sun, Yipin Wu, Sima Jonusaite, John M Pleinis, John M Humphreys, Haixia He, Jeffrey N Schellinger, Radha Akella, Drew Stenesen, Helmut Krämer, Elizabeth J Goldsmith, Aylin R Rodan
Background With No Lysine kinase (WNK) signaling regulates mammalian renal epithelial ion transport to maintain electrolyte and BP homeostasis. Our previous studies showed a conserved role for WNK in the regulation of transepithelial ion transport in the Drosophila Malpighian tubule. Methods Using in vitro assays and transgenic Drosophila lines, we examined two potential WNK regulators, chloride ion and the scaffold protein mouse protein 25 (Mo25), in the stimulation of transepithelial ion flux. Results In vitro , autophosphorylation of purified Drosophila WNK decreased as chloride concentration increased...
May 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29579391/modification-of-bacterial-cellulose-with-quaternary-ammonium-compounds-based-on-fatty-acids-and-amino-acids-and-the-effect-on-antimicrobial-activity
#9
Anna Zywicka, Karol Fijałkowski, Adam F Junka, Jakub Grzesiak, Miroslawa El Fray
In the present work, bacterial cellulose (BC) membranes have been modified with bioactive compounds based on long chain dimer of C18 linoleic acid, referred to as the dilinoleic acid (DLA) and tyrosine (Tyr), a natural amino acid capable of forming noncovalent cation- interactions with positively charged ethylene diamine (EDA). This new compound, [EDA][DLA-Tyr] has been synthesized by simple coupling reaction and its chemical structure was characterized by 1H NMR and FT-IR spectroscopy. The antimicrobial activity of a new compound against S...
March 26, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29515882/how-maternal-investment-varies-with-environmental-factors-and-the-age-and-physiological-state-of-wild-tsetse-glossina-pallidipes-and-glossina-morsitans-morsitans
#10
John W Hargrove, M Odwell Muzari, Sinead English
Theory suggests females should optimize resource allocation across reproductive bouts to maximize lifetime reproduction, balancing current and future reproductive efforts according to physiological state and projected survival and reproduction. Tests of these ideas focus on long-lived vertebrates: few measure age-related reproductive output in iteroparous invertebrates, or partition reserves between those allocated to offspring versus mothers. We investigated how maternal age, and environmental and physiological factors influence reproductive investment in wild tsetse, Glossina pallidipes Austen and G...
February 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29484288/ventilation-strategies-during-neonatal-cardiopulmonary-resuscitation
#11
REVIEW
Nariae Baik, Megan O'Reilly, Caroline Fray, Sylvia van Os, Po-Yin Cheung, Georg M Schmölzer
Approximately, 10-20% of newborns require breathing assistance at birth, which remains the cornerstone of neonatal resuscitation. Fortunately, the need for chest compression (CC) or medications in the delivery room (DR) is rare. About 0.1% of term infants and up to 15% of preterm infants receive these interventions, this will result in approximately one million newborn deaths annually worldwide. In addition, CC or medications (epinephrine) are more frequent in the preterm population (~15%) due to birth asphyxia...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29447916/helix-formation-and-stability-in-membranes
#12
REVIEW
Matthew J McKay, Fahmida Afrose, Roger E Koeppe, Denise V Greathouse
In this article we review current understanding of basic principles for the folding of membrane proteins, focusing on the more abundant alpha-helical class. Membrane proteins, vital to many biological functions and implicated in numerous diseases, fold into their active conformations in the complex environment of the cell bilayer membrane. While many membrane proteins rely on the translocon and chaperone proteins to fold correctly, others can achieve their functional form in the absence of any translation apparatus or other aides...
February 13, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29427756/crispr-cas9-ablation-of-individual-mirnas-from-a-mirna-family-reveals-their-individual-efficacies-for-regulating-cardiac-differentiation
#13
Ziyao Zhang, Rebecca Ursin, Samiksha Mahapatra, G Ian Gallicano
Although it is well understood that genetic mutations, chromosomal abnormalities, and epigenetic miscues can cause congenital birth defects, many defects are still labeled idiopathic, meaning their origin is not yet understood. microRNAs are quickly entering the causal fray of developmental defects. miRNAs use a 7-8 base-pair seed sequence to target a corresponding sequence on one or multiple mRNAs resulting in rapid down-regulation of translation. miRNAs can also control protein 'amounts' in cells. As a result if miRNAs are over or under expressed during development protein homeostasis can be compromised resulting in defects in the development of organ systems...
April 2018: Mechanisms of Development
https://www.readbyqxmd.com/read/29417711/design-of-a-short-thermally-stable-%C3%AE-helix-embedded-in-a-macrocycle
#14
Haifan Wu, Arusha Acharyya, Yibing Wu, Lijun Liu, Hyunil Jo, Feng Gai, William F DeGrado
Although helices play key roles in peptide-protein and protein-protein interactions, the helical conformation is generally unstable for short peptides (10-15 residues) in aqueous solution in the absence of their binding partners. Thus, stabilizing the helical conformation of peptides can lead to increases in binding potency, specificity, and stability towards proteolytic degradation. Helices have been successfully stabilized by introducing side chain-to-side chain crosslinks within the central portion of the helix...
February 7, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29379211/passive-immunotherapy-of-viral-infections-super-antibodies-enter-the-fray
#15
REVIEW
Laura M Walker, Dennis R Burton
Antibodies have been used for more than 100 years in the therapy of infectious diseases, but a new generation of highly potent and/or broadly cross-reactive human monoclonal antibodies (sometimes referred to as 'super-antibodies') offers new opportunities for intervention. The isolation of these antibodies, most of which are rarely induced in human infections, has primarily been achieved by large-scale screening for suitable donors and new single B cell approaches to human monoclonal antibody generation. Engineering the antibodies to improve half-life and effector functions has further augmented their in vivo activity in some cases...
May 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29354918/-distribution-of-algesia-sensitized-acupoints-in-the-patients-of-intestinal-cancer
#16
Xuezhi Qi, Lizhen Chen, Xiaoning Zhang, Mingjuan Han, Wei He, Yangshuai Su, Xiaoyu Wang, Xianghong Jing, Bing Zhu
OBJECTIVE: To judge whether algesia sensitization of some acupoints is existed and whether the acupoint algesia sensitization area is expanded in the patients of intestinal cancer. METHODS: Totally, 30 patients of intestinal cancer and 30 healthy subjects were included. The electronic Von Fray was used to determine the pressure-pain thresholds at 13 acupoints relevant with gastrointestinal disorders and the reference points at the sites 1 cun and 2 cun lateral to those points as well as the sites at the corresponding nerve segments...
September 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29339499/supercritical-co-2-uptake-by-nonswelling-phyllosilicates
#17
Jiamin Wan, Tetsu K Tokunaga, Paul D Ashby, Yongman Kim, Marco Voltolini, Benjamin Gilbert, Donald J DePaolo
Interactions between supercritical (sc) CO2 and minerals are important when CO2 is injected into geologic formations for storage and as working fluids for enhanced oil recovery, hydraulic fracturing, and geothermal energy extraction. It has previously been shown that at the elevated pressures and temperatures of the deep subsurface, scCO2 alters smectites (typical swelling phyllosilicates). However, less is known about the effects of scCO2 on nonswelling phyllosilicates (illite and muscovite), despite the fact that the latter are the dominant clay minerals in deep subsurface shales and mudstones...
January 30, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29338651/lemco-un-coloso-de-la-industria-c%C3%A3-rnica-en-fray-bentos-uruguay-the-meat-industry-s-colossus-in-fray-bentos-uruguay
#18
William H Brock
No abstract text is available yet for this article.
August 2017: Ambix
https://www.readbyqxmd.com/read/29328887/macroscopic-rotator-cuff-tendinopathy-and-histopathology-do-not-predict-repair-outcomes-of-rotator-cuff-tears
#19
Paul M Sethi, Chirag D Sheth, Leo Pauzenberger, Mary Beth R McCarthy, Mark P Cote, Emma Soneson, Seth Miller, Augustus D Mazzocca
BACKGROUND: Numerous studies have identified factors that may affect the chances of rotator cuff healing after surgery. Intraoperative tendon quality may be used to predict healing and to determine type of repair and/or consideration of augmentation. There are no data that correlate how gross tendon morphology and degree of tendinopathy affect patient outcome or postoperative tendon healing. Purpose/Hypothesis: The purposes of this study were to (1) compare the gross appearance of the tendon edge during arthroscopic rotator cuff repair with its histological degree of tendinopathy and (2) determine if gross appearance correlated with postoperative repair integrity...
March 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29299861/human-bocavirus-detection-quantification-and-molecular-characterization-in-sewage-and-surface-waters-in-uruguay
#20
Matías Salvo, Andrés Lizasoain, Matías Castells, Viviana Bortagaray, Sebastián Castro, Rodney Colina, Fernando Lopez Tort, Matías Victoria
Human bocavirus (HBoV) infections are related to respiratory and gastroenteric diseases. The aim of this study was to investigate the presence of HBoV in both sewage and surface waters in Uruguay. Sixty-eight sewage samples from the cities of Salto, Paysandú, Bella Unión, Fray Bentos, Treinta y Tres and Melo and 36 surface water samples from the cities of Salto, Florida and Santa Lucía were studied. HBoV was screened by multiplex qPCR for the detection of the four subtypes, followed by monoplex qPCRs for the independent quantification of each subtype...
January 3, 2018: Food and Environmental Virology
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