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https://www.readbyqxmd.com/read/28636294/-selective-therapeutic-de-escalation-in-early-stage-breast-cancer
#1
Aikaterini Liapi, Apostolos Sarivalasis, Wendy Jeanneret Sozzi, Loïc Lelièvre, Khalil Zaman
The survival of patients with breast cancer has improved considerably thanks to adjuvant radiotherapy and systemic treatments. Due to the potential adverse events associated with these treatments, a de-escalation effort was undertaken concerning surgery and more recently the adjuvant treatments. Conservative breast surgery and the avoidance of axillary dissection were possible for the majority of the patients without detrimental effect on survival. New radiotherapy techniques and the consideration of cancer biology allowed to better protect the peripheral organs and even to avoid treatment in certain low-risk patients...
May 17, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28636272/development-of-biotic-ligand-model-based-freshwater-aquatic-life-criteria-for-lead-following-us-environmental-protection-agency-guidelines
#2
David K DeForest, Robert C Santore, Adam C Ryan, Brian G Church, M Jasim Chowdhury, Kevin V Brix
The US Environmental Protection Agency's (USEPA's) current ambient water quality criteria (AWQC) for lead (Pb) in freshwater were developed in 1984. The criteria are adjusted for hardness, but more recent studies have demonstrated that other parameters, especially dissolved organic carbon (DOC) and pH, have a much stronger influence on Pb bioavailability. These recent studies have been used to support development of a biotic ligand model (BLM) for Pb in freshwater, such that acute and chronic Pb toxicity can be predicted over a wide range of water chemistry conditions...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28636255/recombinant-human-serum-albumin-for-corneal-preservation
#3
Mohit Parekh, Hossein Elbadawy, Gianni Salvalaio, Marie-Claude Amoureux, Enzo Di Iorio, Denis Fortier, Diego Ponzin, Stefano Ferrari, Alessandro Ruzza
PURPOSE: To study the performance of a completely synthetic organ culture (OC) preservation system containing recombinant human serum albumin (rHSA) for preservation of human donor corneas. METHODS: Twenty-four paired donor corneas were randomly collected, and one cornea from each donor was preserved in synthetic (experimental) and serum-based media (control). The tissues were assessed at day 0; after 6 days of preservation at room temperature (RT) in Cornea Trans(®) and Cornea Prep II(®) ; after 28 days at 31°C in Cornea Syn(®) [with rHSA] and Cornea Max(®) [with foetal calf serum (FCS)] and; 4-day post deswelling in Cornea Trans(®) and Cornea Jet(®) ...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28636253/estimation-of-vanadium-water-quality-benchmarks-for-the-protection-of-aquatic-life-with-relevance-to-the-athabasca-oil-sands-region-using-species-sensitivity-distributions
#4
Stephanie Schiffer, Karsten Liber
Elevated vanadium (V) concentrations in oil sands coke, which is produced and stored on the site of some major Athabasca Oil Sands companies, could pose a risk to aquatic ecosystems in northern Alberta, Canada, depending on its future storage and utilization. In the present study, V toxicity was determined in reconstituted Athabasca River water to various freshwater organisms, including 2 midge species (Chironomus dilutus and Chironomus riparius; 4-d and 30- to 40-d exposures) and 2 freshwater fish species (Oncorhynchus mykiss and Pimephales promelas; 4-d and 28-d exposures) to facilitate estimation of water quality benchmarks...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28636231/orchestration-at-the-beginning-mitosis-in-sea-urchin-embryo
#5
Giselle A Abruzzese, Nae Tanpradit, Renata S Tavares
Development of multicellular organisms is driven by a series of mitotic divisions after fertilization. Total cytoplasmic volume does not increase during this process, resulting in an increasing number of smaller daughter cells. Cell divisions are initially synchronous in an early embryo, but this ends at the 16-cell stage in the sea urchin. Orchesterated mitosis does, however, continue in subpopulations via the coordination of two different processes: karyokinesis and cytokinesis. Part of this asynchrony is due to the differentiation of lineages...
June 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28636204/aerobic-exercise-training-for-adults-with-fibromyalgia
#6
REVIEW
Julia Bidonde, Angela J Busch, Candice L Schachter, Tom J Overend, Soo Y Kim, Suelen M Góes, Catherine Boden, Heather Ja Foulds
BACKGROUND: Exercise training is commonly recommended for individuals with fibromyalgia. This review is one of a series of reviews about exercise training for people with fibromyalgia that will replace the "Exercise for treating fibromyalgia syndrome" review first published in 2002. OBJECTIVES: • To evaluate the benefits and harms of aerobic exercise training for adults with fibromyalgia• To assess the following specific comparisons ० Aerobic versus control conditions (eg, treatment as usual, wait list control, physical activity as usual) ० Aerobic versus aerobic interventions (eg, running vs brisk walking) ० Aerobic versus non-exercise interventions (eg, medications, education) We did not assess specific comparisons involving aerobic exercise versus other exercise interventions (eg, resistance exercise, aquatic exercise, flexibility exercise, mixed exercise)...
June 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28636203/directional-matrix-nanotopography-with-varied-sizes-for-engineering-wound-healing
#7
Jangho Kim, Won-Gyu Bae, Yeon Ju Kim, Hoon Seonwoo, Han-Wool Choung, Kyoung-Je Jang, Sunho Park, Bog Hee Kim, Hong-Nam Kim, Kyoung Soon Choi, Myung-Sun Kim, Pill-Hoon Choung, Yun-Hoon Choung, Jong Hoon Chung
Topographic features play a crucial role in the regulation of physiologically relevant cell and tissue functions. Here, an analysis of feature-size-dependent cell-nanoarchitecture interactions is reported using an array of scaffolds in the form of uniformly spaced ridge/groove structures for engineering wound healing. The ridge and groove widths of nanopatterns are varied from 300 to 800 nm and the nanotopography features are classified into three size ranges: dense (300-400 nm), intermediate (500-600 nm), and sparse (700-800 nm)...
June 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28636199/widespread-occurrence-and-potential-for-biodegradation-of-bioactive-contaminants-in-congaree-national-park-usa
#8
Paul M Bradley, William A Battaglin, Jimmy M Clark, Frank Henning, Michelle L Hladik, Luke R Iwanowicz, Celeste A Journey, Jeffrey W Riley, Kristin M Romanok
Organic contaminants with designed molecular bioactivity, such as pesticides and pharmaceuticals, originate from human and agricultural sources, occur frequently in surface waters, and threaten the structure and function of aquatic and terrestrial ecosystems. Congaree National Park in South Carolina (USA) is a vulnerable park unit due to its location downstream of multiple urban and agricultural contaminant sources and its hydrologic setting, being composed almost entirely of floodplain and aquatic environments...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28636167/berberine-ameliorates-collagen-induced-arthritis-in-rats-by-suppressing-th17-cell-responses-via-inducing-cortistatin-in-the-gut
#9
Mengfan Yue, Yufeng Xia, Can Shi, Chunge Guan, Yunfan Li, Rui Liu, Zhifeng Wei, Yue Dai
Berberine, an isoquinoline alkaloid, has been reported to ameliorate various autoimmune diseases including rheumatoid arthritis by oral administration. However, its mechanism remains mysterious due to an extremely low bioavailability. The fact that berberine is easy to accumulate in gut, the largest endocrine organ in the body, attracts us to explore its anti-arthritic mechanism in view of the induction of intestinal immunosuppressive neuropeptides. In this study, berberine (200 mg/kg, i.g.) was shown to ameliorate collagen-induced arthritis in rats, which was manifested by the reduction of clinical signs and joint destruction, as well as marked down-regulation of Th17 cell frequency and IL-17 level in blood...
June 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28636161/infinity-sperm-storage-the-gift-that-keeps-on-giving
#10
Gauthier Schang, Beatriz Fernandez-Fuertes, Samantha C Lean, Alexandra L Nguyen, Osvaldo Bogado Pascottini
Female Drosophila retain sperm for up to two weeks post-copulation in a network of storage organs includng the bursa, the seminal receptacle, and the spermathecae. This image shows the seminal receptacle of a Drosophila melanogaster female, 2-hrs post-copulation between a LHM (wild-type) female with a Protamine B (green), β-Tubulin (blue) fluorescently tagged male, whose sperm can be visualized within the female. This 'infinity' structure of the seminal receptacle resembles the tubular coil that allows for the storage of very long sperm relative to female body size -up to 20 times the length of the female in some Drosophila species...
June 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28636137/the-experience-of-waiting-for-a-kidney-transplant-a-qualitative-study
#11
Tania Burns, Ritin Fernandez, Moira Stephens
BACKGROUND: In Australia over 1100 people are living on dialysis while waiting for a kidney transplant from a deceased donor. Worldwide there are an estimated 170,000 people who wait an average of three years before an organ becomes available. OBJECTIVE: To provide an understanding of the lived experience of people waiting on dialysis for a kidney transplant from a deceased donor. APPROACH: A qualitative descriptive research design was used...
June 21, 2017: Journal of Renal Care
https://www.readbyqxmd.com/read/28636136/capillary-zone-electrophorsis-for-the-analysis-of-naturally-occurring-2-hydroxycitric-acids-and-their-lactones
#12
B L Abhijith, Moolya Mohan, David Joseph, Simimole Haleema, Hassan Y Aboul-Enein, Ibrahim Ibnusaud
A simple capillary zone electrophoresis method with direct ultraviolet detection has been developed for the analysis of naturally occurring diastereomeric 2-hydroxycitric acid lactones. Using 50 mM sodium phosphate buffer of pH 7, a baseline resolution Rs > 3.0 was observed for all organic acids selected for the present study. This method was employed for the quantitative determination of title acids present in the plant sources namely G. cambogia fruit rinds and H. sabdariffa calyx. Conversion of 2-hydroxycitric acids to their lactones on heating above plant sources is deliberated...
June 21, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28636074/optimizing-outcomes-in-pancreas-transplantation-impact-of-organ-preservation-time
#13
Ehren N Rudolph, Ty B Dunn, David E R Sutherland, Raja Kandaswamy, Erik B Finger
Recent changes to pancreas graft allocation policy have increased the number of organs available for regional and distant sharing, which results in a corresponding increase in preservation time. We sought to systematically assess the impact of cold ischemia time (CIT) on outcomes posttransplant. A retrospective review of 1,253 pancreas transplants performed at a single transplant center was performed to correlate CIT to transplant outcomes. The rate of technical failure (TF) increased with 20+ hours of CIT, with a 2...
June 21, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28636040/tamoxifen-like-metallocifens-target-the-thioredoxin-system-determining-mitochondrial-impairment-leading-to-apoptosis-in-jurkat-cells
#14
Valeria Scalcon, Michèle Salmain, Alessandra Folda, Siden Top, Pascal Pigeon, Hui Zhi Shirley Lee, Gérard Jaouen, Alberto Bindoli, Anne Vessières, Maria Pia Rigobello
Tamoxifen-like metallocifens (TLMs) of the group-8 metals (Fe, Ru, and Os) show strong anti-proliferative activity on cancer cell lines resistant to apoptosis, owing to their unique redox properties. In contrast, the thioredoxin system, which is involved in cellular redox balance, is often overexpressed in cancer cells, especially in tumour types resistant to standard chemotherapies. Therefore, we investigated the effect of these three TLMs on the thioredoxin system and evaluated the input of the metallocene unit in comparison with structurally related organic tamoxifens...
June 21, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28636029/cross-impact-of-surface-and-interaction-anisotropy-in-the-self-assembly-of-organic-adsorption-monolayers-a-monte-carlo-and-transfer-matrix-study
#15
V A Gorbunov, S S Akimenko, A V Myshlyavtsev
Using a simple lattice gas model we study the features of self-assembly in adsorption layers where both "molecule-surface" and "molecule-molecule" interactions are anisotropic. Based on the example of adsorption layers of mono-functional organic molecules on the heterogeneous surface with strip-like topography, we have revealed plenty of possible self-assembled structures in this simple system, such as discrete, linear, zigzag, chess board-like, two-dimensional porous and close-packed patterns. However, the phase behavior of the adsorption layer is much richer, if the interactions between functional and non-functional parts of adjacent adsorbed molecules have comparable strength and opposite signs...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28636013/new-insights-into-the-solubility-of-graphene-oxide-in-water-and-alcohols
#16
Vadim V Neklyudov, Nail R Khafizov, Igor A Sedov, Ayrat M Dimiev
One of the main advantages of graphene oxide (GO) over its non-oxidized counterpart is its ability to form stable solutions in water and some organic solvents. At the same time, the nature of GO solutions is not completely understood; the existing data are scarce and controversial. Here, we demonstrate that the solubility of GO, and the stability of the as-formed solutions depend not just on the solute and solvent cohesion parameters, as commonly believed, but mostly on the chemical interactions at the GO/solvent interface...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28635990/neuroendocrine-neoplasms-of-the-head-and-neck-and-olfactory-neuroblastoma-diagnosis-and-classification
#17
S Uccella, G Ottini, C Facco, R Maragliano, S Asioli, F Sessa, S La Rosa
Neuroendocrine neoplasms (NENs) of the head and neck are a rare group of heterogeneous epithelial neoplastic proliferations arising in virtually all of the different organs of this region, particularly in the nasal cavity, the paranasal sinuses, the nasopharynx, the larynx, the salivary glands, and the middle ear. They encompass a wide spectrum of entities ranging from very indolent neuroendocrine tumors to highly aggressive neuroendocrine carcinomas. They may represent a challenge for radiologists, oncologists, and pathologists and a correct diagnosis is crucial for the management of patients...
March 2017: Pathologica
https://www.readbyqxmd.com/read/28635972/experiences-and-concerns-of-lesbian-gay-or-bisexual-survivors-of-colorectal-cancer
#18
Allyson Baughman, Melissa A Clark, Ulrike Boehmer
PURPOSE/OBJECTIVES: To identify the experiences and needs of lesbian, gay, or bisexual (LGB) survivors of colorectal cancer (CRC) and to expand the current understanding of LGB survivorship by obtaining in-depth knowledge of survivorship among individuals with a cancer other than breast or prostate. 
. RESEARCH APPROACH: Qualitative, semistructured individual interviews via telephone.
. SETTING: Participants were recruited using social media, flyers, word of mouth, and contact with LGB and cancer organizations during a four-month period...
May 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28635966/testing-models-of-refugial-isolation-colonization-and-population-connectivity-in-two-species-of-montane-salamanders
#19
S M Rovito, S D Schoville
Pleistocene glaciations have profoundly affected patterns of genetic diversity within many species. Temperate alpine organisms likely experienced dramatic range shifts, given that much of their habitat was glaciated during this time. While the effects of glaciations are relatively well understood, the spatial locations of refugia and processes that gave rise to current patterns of diversity are less well known. We use a microsatellite data set to test hypotheses of population connectivity and refugial isolation in the web-toed salamanders (Hydromantes) of the Sierra Nevada...
June 21, 2017: Heredity
https://www.readbyqxmd.com/read/28635962/growth-of-organic-crystals-via-attachment-and-transformation-of-nanoscopic-precursors
#20
Yuan Jiang, Matthias Kellermeier, Denis Gebaue, Zihao Lu, Rose Rosenberg, Adrian Moise, Michael Przybylski, Helmut Cölfen
A key requirement for the understanding of crystal growth is to detect how new layers form and grow at the nanoscale. Multistage crystallization pathways involving liquid-like, amorphous or metastable crystalline precursors have been predicted by theoretical work and have been observed experimentally. Nevertheless, there is no clear evidence that any of these precursors can also be relevant for the growth of crystals of organic compounds. Herein, we present a new growth mode for crystals of DL-glutamic acid monohydrate that proceeds through the attachment of preformed nanoscopic species from solution, their subsequent decrease in height at the surface and final transformation into crystalline 2D nuclei that eventually build new molecular layers by further monomer incorporation...
June 21, 2017: Nature Communications
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