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https://www.readbyqxmd.com/read/28645141/does-the-seed-bank-contribute-to-the-build-up-of-a-genetic-extinction-debt-in-the-grassland-perennial-campanula-rotundifolia
#1
Jan Plue, Katrien Vandepitte, Olivier Honnay, Sara A O Cousins
Background and Aims: Habitat fragmentation threatens global biodiversity. Many plant species persist in habitat fragments via persistent life cycle stages such as seed banks, generating a species extinction debt. Here, seed banks are hypothesized to cause a temporal delay in the expected loss of genetic variation, which can be referred to as a genetic extinction debt, as a possible mechanism behind species extinction debts. Methods: Fragmented grassland populations of Campanula rotundifolia were examined for evidence of a genetic extinction debt, investigating if the seed bank contributed to the extinction debt build-up...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28644993/long-term-toxicity-of-surface-charged-polystyrene-nanoplastics-to-marine-planktonic-species-dunaliella-tertiolecta-and-artemia-franciscana
#2
E Bergami, S Pugnalini, M L Vannuccini, L Manfra, C Faleri, F Savorelli, K A Dawson, I Corsi
Plastic pollution has been globally recognized as a critical issue for marine ecosystems and nanoplastics constitute one of the last unexplored areas to understand the magnitude of this threat. However, current difficulties in sampling and identifying nano-sized debris make hard to assess their occurrence in marine environment. Polystyrene nanoparticles (PS NPs) are largely used as nanoplastics in ecotoxicological studies and although acute exposures have been already investigated, long-term toxicity on marine organisms is unknown...
June 15, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28644668/strong-light-matter-interactions-in-single-open-plasmonic-nanocavities-at-the-quantum-optics-limit
#3
Renming Liu, Zhang-Kai Zhou, Yi-Cong Yu, Tengwei Zhang, Hao Wang, Guanghui Liu, Yuming Wei, Huanjun Chen, Xue-Hua Wang
Reaching the quantum optics limit of strong light-matter interactions between a single exciton and a plasmon mode is highly desirable, because it opens up possibilities to explore room-temperature quantum devices operating at the single-photon level. However, two challenges severely hinder the realization of this limit: the integration of single-exciton emitters with plasmonic nanostructures and making the coupling strength at the single-exciton level overcome the large damping of the plasmon mode. Here, we demonstrate that these two hindrances can be overcome by attaching individual J aggregates to single cuboid Au@Ag nanorods...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644155/transvenous-before-surgical-hybrid-procedure
#4
Joseph J Tiano, Robert Drennan, John Novella, Rafael Squiteri, Malcolm Robinson, Albert DiMeo, Lindsey Scierka, Paul LeLorier
BACKGROUND: Historically, persistent atrial fibrillation (PeAF) and long standing persistent atrial fibrillation (LSPeAF) have demonstrated limited clinical success despite hybrid approaches. OBJECTIVE: We describe our experience with the endocardial-before-epicardial approach defined by a comprehensive endovascular approach preceding and guiding the epicardial approach which includes an extensive posterior wall ablation. METHODS: 40 patients were followed over a 12 month period...
May 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28644119/damage-control-plating-in-open-tibial-shaft-fractures-a-cheaper-and-equally-effective-alternative-to-spanning-external-fixation
#5
Paul S Whiting, Phillip M Mitchell, Aaron M Perdue, Arnold J Silverberg, Sarah E Greenberg, Rachel V Thakore, Vasanth Sathiyakumar, Hassan R Mir, William T Obremskey, Manish K Sethi
The purpose of this study was to evaluate damage control plating (DCP) as an alternative to external fixation (EF) in the provisional stabilization of open tibial shaft fractures. Through retrospective analysis, the study found 445 patients who underwent operative fixation for tibial shaft fractures from 2008 to 2012. Twenty patients received DCP or EF before intramedullary nailing with a minimum follow-up of 3 months. Charts and radiographs were reviewed for postoperative complications. Hospital charges were reviewed for implant costs...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28644007/cyclotides-as-tools-in-chemical-biology
#6
Simon J de Veer, Joachim Weidmann, David J Craik
Among the various molecules that plants produce for defense against pests and pathogens, cyclotides stand out as exceptionally stable and structurally unique. These ribosomally synthesized peptides are around 30 amino acids in size, and are stabilized by a head-to-tail cyclic peptide backbone and three disulfide bonds that form a cystine knot. They occur in certain plants of the Rubiaceae, Violaceae, Cucurbitaceae, Fabaceae, and Solanaceae families, with an individual plant producing up to hundreds of different cyclotides...
June 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28643511/exceptionally-high-payload-of-ir780-iodide-on-folic-acid-functionalized-graphene-quantum-dots-for-targeted-photothermal-therapy
#7
Shuhua Li, Shixin Zhou, Yunchao Li, Xiaohong Li, Jia Zhu, Louzhen Fan, Shihe Yang
IR780 iodide (IR780) is recognized as an effective theranostic agent for simultaneous near-infrared (NIR) fluorescence imaging and photothermal therapy (PTT). However, the rigid chloro-cyclohexenyl ring makes IR780 insoluble in almost all pharmaceutically acceptable solvents, which inevitably limits its clinical application. We report folic acid (FA)-functionalized graphene quantum dots (GQDs-FA) containing a large and intact sp2-domain with carboxyl groups around the edge. Such GQDs-FA possess exceptionally high loading capacity for IR780 via strong π-π stacking interactions, and the water solubility of IR780 is improved by over 2400-fold after loading onto GQDs-FA (IR780/GQDs-FA)...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28643300/-advantages-and-disadvantages-of-minimally-invasive-surgery-in-colorectal-cancer-surgery
#8
Minhua Zheng, Junjun Ma
Since the emergence of minimally invasive technology twenty years ago, as a surgical concept and surgical technique for colorectal cancer surgery, its obvious advantages have been recognized. Laparoscopic technology, as one of the most important technology platform, has got a lot of evidence-based support for the oncological safety and effectiveness in colorectal cancer surgery Laparoscopic technique has advantages in terms of identification of anatomic plane and autonomic nerve, protection of pelvic structure, and fine dissection of vessels...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643013/preoperative-measurement-of-the-modified-glasgow-prognostic-score-predicts-patient-survival-in-non-metastatic-renal-cell-carcinoma-prior-to-nephrectomy
#9
Takuya Tsujino, Kazumasa Komura, Tomohisa Matsunaga, Yuki Yoshikawa, Tomoaki Takai, Taizo Uchimoto, Kenkichi Saito, Naoki Tanda, Rintaro Oide, Koichiro Minami, Hirofumi Uehara, Seong Ho Jeong, Kohei Taniguchi, Hajime Hirano, Hayahito Nomi, Naokazu Ibuki, Kiyoshi Takahara, Teruo Inamoto, Haruhito Azuma
PURPOSE: The modified Glasgow Prognostic Score (mGPS) by measurement of serum C-reactive protein and albumin levels has been shown to provide prognostic value in various cancer types. The purpose of this study was to evaluate whether preoperative assessment of the mGPS predicts patient survival outcome in renal cell carcinoma (RCC). MATERIALS AND METHODS: Clinicopathological and follow-up data in 219 RCC patients, all of whom underwent curative or non-curative nephrectomy, were collected...
June 22, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28642945/nonribosomal-peptide-synthetase-biosynthetic-clusters-of-eskape-pathogens
#10
REVIEW
Andrew M Gulick
Covering: up to 2017.Natural products are important secondary metabolites produced by bacterial and fungal species that play important roles in cellular growth and signaling, nutrient acquisition, intra- and interspecies communication, and virulence. A subset of natural products is produced by nonribosomal peptide synthetases (NRPSs), a family of large, modular enzymes that function in an assembly line fashion. Because of the pharmaceutical activity of many NRPS products, much effort has gone into the exploration of their biosynthetic pathways and the diverse products they make...
June 23, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28642541/can-uk-undergraduate-dental-programmes-provide-training-in-non-surgical-facial-aesthetics
#11
T W M Walker, F Gately, S Stagnell, A Kerai, C Mills, S Thomas
Aim Recently, more and more dentists have found themselves engaging in the delivery of non-surgical facial aesthetics (NSFA) as part of their regular practice routine. NSFA is a growing field in aesthetic medicine that is practised by a range of clinicians including doctors, dentists and registered prescriber nurses and is an industry estimated to be worth over £3 billion in the UK alone. In the past few years, several public scandals in aesthetic medicine have prompted reactions by several bodies including the Government and Royal Colleges...
June 23, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28641331/-surgical-treatment-of-pseudotumours-of-the-lung
#12
Zsolt Sziklavari, Annete Droste, Reiner Neu, Hans-Stefan Hofmann, Michael Ried
Introduction Pseudotumour of the lung is a collective term for various subentities. Some subgroups are considered to be intermediary malignant tumours. A pseudotumour is a rare condition, which makes it difficult to estimate its incidence and prevalence. Methods Retrospective analysis of all surgically treated patients between 2008 and 2015 diagnosed with a pseudotumour of the lung. The primary endpoint of this study was to estimate the rates of local recurrence and metastasis. Secondary endpoints were to determine the nomenclature, medical history, treatment, and the perioperative course...
June 22, 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/28641146/early-development-and-predictors-of-morphological-awareness-disentangling-the-impact-of-decoding-skills-and-phonological-awareness
#13
Jeremy M Law, Pol Ghesquière
BACKGROUND: Morphological Awareness (MA) has been demonstrated to be influential on the reading outcomes of children and adults. Yet, little is known regarding MA's early development. AIM: The aim of this study is to better understand MA at different stages of development and its association with Phonological Awareness (PA) and reading. METHODS AND PROCEDURES: In a longitudinal design the development of MA was explored in a group of pre-reading children with a family risk of dyslexia and age-matched controls from kindergarten up to and including grade 2...
June 19, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28640774/the-difference-between-countermovement-and-squat-jump-performances-a-review-of-underlying-mechanisms-with-practical-applications
#14
Bas Van Hooren, Julia Zolotarjova
Van Hooren, B and Zolotarjova, J. The difference between countermovement and squat jump performances: a review of underlying mechanisms with practical applications. J Strength Cond Res 31(7): 2011-2020, 2017-Two movements that are widely used to monitor athletic performance are the countermovement jump (CMJ) and squat jump (SJ). Countermovement jump performance is almost always better than SJ performance, and the difference in performance is thought to reflect an effective utilization of the stretch-shortening cycle...
July 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28640583/fluffy-and-ordered-graphene-multilayer-films-with-improved-electromagnetic-interference-shielding-over-x-band
#15
Zicheng Wang, Renbo Wei, Xiaobo Liu
Highly ordered nitrogen-doped graphene multilayer films with large interlayer void are successfully fabricated by thermal annealing the compact stacking graphene oxide/copper phthalocyanine (GO/CuPc) multilayer films. Scanning electron microscopic (SEM), X-ray diffraction (XRD), Raman, X-ray photoelectron spectroscopic (XPS) and electrical conductivity measurements indicate that the breakaway of oxygen functional groups on/in the GO sheets at high temperature and the in-situ pyrolysis of CuPc molecules in the interlayer of graphene sheets synergistically facilitate the restoration of GO in graphitization, the effective nitrogen doping by replacing carbon atoms in graphene frameworks, the retention of layer-by-layer stacking structure of graphene sheets in plane and the formation of interlayer voids, leading to the enhancement in the electrical conductivity (3...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28640581/molecular-insight-of-water-desalination-across-multilayer-graphene-oxide-membranes
#16
Bo Chen, Haifeng Jiang, Xiang Liu, Xuejiao Hu
Transport of ionic solutions through graphene oxide (GO) membranes is a complicated issue because the complex and tortuous structure inside make it very hard to clarify. Using molecular dynamics (MD) simulations, we investigated the mechanism of water transport and ions movement across the multilayer graphene oxide. The significant flow rate is considerably influenced by the structural parameters of GO membranes. Due to the size effect on shrunken real flow area, there is disagreement between classical continuum model and nano-scaled flow...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28640448/overview-of-the-muscle-cytoskeleton
#17
Christine A Henderson, Christopher G Gomez, Stefanie M Novak, Lei Mi-Mi, Carol C Gregorio
Cardiac and skeletal striated muscles are intricately designed machines responsible for muscle contraction. Coordination of the basic contractile unit, the sarcomere, and the complex cytoskeletal networks are critical for contractile activity. The sarcomere is comprised of precisely organized individual filament systems that include thin (actin), thick (myosin), titin, and nebulin. Connecting the sarcomere to other organelles (e.g., mitochondria and nucleus) and serving as the scaffold to maintain cellular integrity are the intermediate filaments...
June 18, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28640360/decision-support-networks-of-women-newly-diagnosed-with-breast-cancer
#18
Lauren P Wallner, Yun Li, M Chandler McLeod, Ann S Hamilton, Kevin C Ward, Christine M Veenstra, Lawrence C An, Nancy K Janz, Steven J Katz, Sarah T Hawley
BACKGROUND: Little is known about the size and characteristics of the decision-support networks of women newly diagnosed with breast cancer and whether their involvement improves breast cancer treatment decisions. METHODS: A population-based sample of patients newly diagnosed with breast cancer in 2014 and 2015, as reported to the Georgia and Los Angeles Surveillance, Epidemiology, and End Results registries, were surveyed approximately 7 months after diagnosis (N = 2502; response rate, 68%)...
June 22, 2017: Cancer
https://www.readbyqxmd.com/read/28640333/establishment-of-lactaton-rooms-in-public-and-private-companies-potentialities-and-difficulties
#19
Vanessa Martinhago Borges Fernandes, Evanguelia Kotzias Atherino Dos Santos, Alacoque Lorenzini Erdmann, Denise Elvira Pires de Pires, Maria de Fátima Mota Zampieri, Vitória Regina Petters Gregório
Objective: To know how managers of public and private companies view lactation support rooms and their implantation. Method: This is study is based on qualitative, exploratory, and descriptive research. Twenty managers from Greater Florianópolis participated in the research, in 2015. Data were collected by means of semi-structured/projective interviews, and subjected to content analysis associated with Atlas.ti software. Results: Data analysis led to the following two categories: difficulties and facilities of establishing a lactation room, with a predominance of financial difficulties and the lack of physical space...
June 5, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28640151/a-case-report-of-hyperosmolar-hyperglycemic-state-in-a-7-year-old-child-an-unusual-presentation-of-first-appearance-of-type-1-diabetes-mellitus
#20
Young Min Cho, Byung Sung Park, Min Jae Kang
RATIONALE: A hyperosmolar hyperglycemic state (HHS) is a rare presentation of a hyperglycemic crisis in children with diabetes mellitus. As this condition can be fatal and has high morbidity, early recognition and proper management are necessary for a better outcome. Here, we report a rare case of HHS as the first presentation of type 1 diabetes mellitus (T1DM) in a 7-year-old girl. PATIENT CONCERNS: The patient was admitted due to polyuria and weight loss in the past few days...
June 2017: Medicine (Baltimore)
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