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https://www.readbyqxmd.com/read/28231638/comparison-of-the-shock-absorption-capacities-of-different-mouthguards
#1
Melina Simonetta Bochnig, Min-Jung Oh, Theresa Nagel, Fred Ziegler, Paul-Georg Jost-Brinkmann
BACKGROUND/AIMS: In this in vitro study the protective qualities of different mouthguard types were examined during small hard object collisions. The aim was to investigate inconclusive aspects of hard inserts, nylon nets and air spaces as reinforcements in the anterior region and the protection qualities of ethylene vinyl acetate (EVA). MATERIALS AND METHODS: Five different mouthguards with a labial thickness between 2 mm and 11 mm made of materials of varying stiffness were investigated...
February 23, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28231340/the-widely-used-nicotiana-benthamiana-16c-line-has-an-unusual-t-dna-integration-pattern-including-a-transposon-sequence
#2
Joshua G Philips, Fatima Naim, Michał T Lorenc, Kevin J Dudley, Roger P Hellens, Peter M Waterhouse
Nicotiana benthamiana is employed around the world for many types of research and one transgenic line has been used more extensively than any other. This line, 16c, expresses the Aequorea victoria green fluorescent protein (GFP), highly and constitutively, and has been a major resource for visualising the mobility and actions of small RNAs. Insights into the mechanisms studied at a molecular level in N. benthamiana 16c are likely to be deeper and more accurate with a greater knowledge of the GFP gene integration site...
2017: PloS One
https://www.readbyqxmd.com/read/28231165/seafood-safety-and-quality-the-consumer-s-role
#3
Doris T Hicks
All the good news about seafood-the health and nutritional benefits, the wide varieties and flavors-has had a positive effect on consumption: people are eating more seafood (http://www.seagrant.sunysb.edu/seafood/pdfs/SeafoodSavvy.pdf). Yet consumers want to be assured that seafood is as safe as, or safer to eat than, other foods. When you hear "seafood safety", think of a safety net designed to protect you, the consumer, from food-borne illness. Every facet of the seafood industry, from harvester to consumer, plays a role in holding up the safety net...
October 28, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230638/mtor-inhibition-cardiovascular-diseases-dyslipidemia-and-atherosclerosis
#4
Ammar Kurdi, Wim Martinet, Guido R Y De Meyer
Inhibitors of the mechanistic target of rapamycin (mTOR) have unique anti-atherosclerotic effects such as depletion of plaque macrophages, induction of autophagy and activation of cholesterol efflux. However, a common side effect of their use is dyslipidemia, a well-known risk factor for atherosclerosis. Indeed, mTOR inhibitors prevent lipid storage, increase LDL cholesterol levels and activate lipolysis. Although the net effect of mTOR inhibition seems favorable, the use of cholesterol lowering drugs to manage dyslipidemia remains the most recommended strategy...
February 23, 2017: Transplantation
https://www.readbyqxmd.com/read/28230366/investigation-of-ionization-pattern-of-the-adjacent-acidic-residues-in-the-dxdxe-motif-of-gh-18-chitinases-using-theoretical-pka-calculations
#5
Piyanat Meekrathok, Predrag Kukic, Jens Erik Nielsen, Wipa Suginta
GH-18 chitinases are chitinolytic enzymes, primarily responsible for the recycling of insoluble chitin biomaterials. These enzymes contain three invariant acidic active-site residues within a DXDXE motif, which play a synergistic role in the catalytic cycle of chitin degradation. We employed a pKa calculation approach to approximate the protonation states of residues D1, D2 and E in the DXDXE motif of 75 GH-18 chitinases. Theoretical pH-activity profiles of these enzymes were subsequently constructed and compared with the experimentally determined pH-activity profiles...
February 23, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28230278/deletion-of-psychiatric-risk-gene-cacna1c-impairs-hippocampal-neurogenesis-in-cell-autonomous-fashion
#6
Bianca Völkening, Kai Schönig, Golo Kronenberg, Dusan Bartsch, Tillmann Weber
Ca(2+) is a universal signal transducer which fulfills essential functions in cell development and differentiation. CACNA1C, the gene encoding the alpha-1C subunit (i.e., Cav 1.2) of the voltage-dependent l-type calcium channel (LTCC), has been implicated as a risk gene in a variety of neuropsychiatric disorders. To parse the role of Cav 1.2 channels located on astrocyte-like stem cells and their descendants in the development of new granule neurons, we created Tg(GLAST-CreERT2) /Cacna1c(fl/fl) /RCE:loxP mice, a transgenic tool that allows cell-type-specific inducible deletion of Cacna1c...
February 23, 2017: Glia
https://www.readbyqxmd.com/read/28230067/life-strategy-and-grazing-intensity-responses-of-brachionus-calyciflorus-fed-on-different-concentrations-of-microcystin-producing-and-microcystin-free-microcystis-aeruginosa
#7
Ye Liang, Kai Ouyang, Xinglan Chen, Yuqi Su, Jiaxin Yang
The occurrence of Microcystis blooms is a worldwide concern due to the numerous adverse effects on zooplankton. We therefore hypothesized that the cyanobacterium Microcystis aeruginosa is harmful to rotifer growth. Population and individual experiments were conducted with the same proportional volumes of Chlorella and Microcystis for given food densities. Life-table parameters, life-history traits, and the grazing intensity of Brachionus calyciflorus were evaluated after they had fed on microcystin-producing and microcystin-free Microcystis, both alone and combined with an edible alga (Chlorella pyrenoidosa), at concentrations of 1 × 10(5), 1 × 10(6), and 1 × 10(7) cells mL(-1)...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229948/mixing-and-capping-techniques-for-activated-carbon-based-sediment-remediation-efficiency-and-adverse-effects-for-lumbriculus-variegatus
#8
Sebastian Abel, Inna Nybom, Kimmo Mäenpää, Sarah E Hale, Gerard Cornelissen, Jarkko Akkanen
Activated carbon (AC) has been proven to be highly effective for the in-situ remediation of sediments contaminated with a wide range of hydrophobic organic contaminants (HOCs). However, adverse biological effects, especially to benthic organisms, can accompany this promising remediation potential. In this study, we compare both the remediation potential and the biological effects of several AC materials for two application methods: mixing with sediment (MIX) at doses of 0.1 and 1.0% based on sediment dw and thin layer capping (TLC) with 0...
February 16, 2017: Water Research
https://www.readbyqxmd.com/read/28229947/high-throughput-screening-and-scale-up-of-cocrystals-using-resonant-acoustic-mixing
#9
Karthik Nagapudi, Evelyn Yanez Umanzor, Colin Masui
This paper explores the effectiveness of resonant acoustic mixing RAM for screening and scale up of cocrystals 16 cocrystal systems were selected as test cases based on previous literature precedent A 96 well plate set up in conjunction with zirconia beads was used for cocrystal screening using RAM A success rate of 80% was obtained in the screen for plates containing solvent or solvent plus Zirconia beads A proof of concept production of hydrated and anhydrous cocrystals of 1:1 Theophylline Citric acid system at a 400mg scale was demonstrated using solvent and bead assisted RAM Finally the parameters affecting the scale up of 2:1 Theophylline Oxalic acid cocrystals was explored in a systematic fashion using a Design of Experiments DOE approach The RAM parameters of acceleration and mixing time were optimized using the DOE approach A quantitative XRPD method was developed to determine the extent of conversion to the cocrystal when using RAM Mixing time of 2hours and an acceleration of 60 G were determined to be optimal The optimized parameters were used to demonstrate scale up of 2:1 Theophylline Oxalic acid cocrystals at an 80 gram scale with a net yield of 94% RAM is thus established as an environmentally friendly mechanochemical technique for both high throughput screening and scaled up production of cocrystals...
February 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28229830/neutrophil-extracellular-traps-formation-in-patients-with-eosinophilic-granulomatosis-with-polyangiitis-association-with-eosinophilic-inflammation
#10
Joanna Natorska, Michał Ząbczyk, Jakub Siudut, Piotr Krawiec, Lucyna Mastalerz, Anetta Undas
OBJECTIVES: Eosinophilic granulomatosis with polyangiitis (EGPA) is associated with an inflammation and the presence of antineutrophil cytoplasmic antibodies (ANCA). Thus, we investigated the impact of ANCAs and eosinophilic inflammation on neutrophil activation and extracellular traps (NETs) formation. METHODS: We recruited 29 patients in the remission of EGPA (17 ANCA-negative and 12 ANCA-positive, including 7 p-ANCA-positive and 5 c-ANCA-positive patients). Healthy donors' neutrophils were stimulated with EGPA patients' serum...
February 9, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28229182/outpatient-unicompartmental-knee-arthroplasty-who-is-afraid-of-outpatient-surgery
#11
Alexander Hoorntje, Koen L M Koenraadt, Margreet G Boevé, Rutger C I van Geenen
PURPOSE: In recent years, duration of hospitalisation after knee arthroplasty has decreased and fast track and outpatient surgery protocols have been developed. Studies have shown that outpatient surgery is feasible, safe, and cost effective. However, the psychological well-being of patients undergoing outpatient surgery has never been described before. The purpose of this study was to investigate how patients experience outpatient surgery for unicompartmental knee arthroplasty (UKA), examining levels of anxiety and depression, satisfaction, and pain...
February 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28229028/small-scale-spatial-variation-in-population-and-individual-level-reproductive-parameters-of-the-blue-legged-hermit-crab-clibanarius-tricolor
#12
J Antonio Baeza, Donald C Behringer
Management of the few regulated ornamental fisheries relies on inadequate information about the life history of the target species. Herein, we investigated the reproductive biology of the most heavily traded marine invertebrate in the western Atlantic; the blue-legged hermit crab Clibanarius tricolor. We report on density, individual-level, and population-level reproductive parameters in 14 populations spanning the Florida Keys. In C. tricolor, abundance, population-level, and individual-level reproductive parameters exhibited substantial small-scale spatial variation in the Florida Keys...
2017: PeerJ
https://www.readbyqxmd.com/read/28228921/scuttle-flies-diptera-phoridae-inhabiting-rabbit-carcasses-confined-to-plastic-waste-bins-in-malaysia-include-new-records-and-an-undescribed-species
#13
Raja M Zuha, See Huong-Wen, R Henry L Disney, Baharudin Omar
Scuttle flies (Diptera: Phoridae) are small-sized insects of forensic importance. They are well known for diversified species and habitats, but in the context of forensic entomology, scuttle flies' inhabitance of corpses remains inadequately explored. With recent reports indicating the existence of more scuttle fly species possibly inhabiting these environments, a decomposition study using animal carcasses in enclosed environments was conducted. The aim was to record the occurrence of scuttle flies on rabbit carcasses placed in sealed plastic waste bins for a 40-day period...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228920/checklist-of-gastropods-from-the-exclusive-economic-zone-eez-sarawak-malaysia
#14
Wan Zabidii Wan Morni, Siti Akmar Khadijah Ab Rahim, Richard Rumpet, Jamil Musel, Ruhana Hassan
This study provides the first marine gastropod checklist from the Sarawak Exclusive Economic Zone (EEZ). Gastropod samples were collected from selected stations in the Sarawak EEZ using an otter trawl net with a stretched mesh size of 38 mm at the cod end. The trawling operations were conducted more than 12 nautical miles from the coast, and the area was divided into three depth strata: I) 20-50 m, II) 50-100 m and III) 100-200 m. A total of 23 gastropod species were identified during the two-month sampling period from 16 August until 6 October 2015, representing 8 superfamilies, 15 families and 20 genera...
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28228868/primary-neuroendocrine-carcinoma-of-the-breast-report-of-2-cases-and-literature-review
#15
Fernando Collado-Mesa, Jose M Net, Geetika A Klevos, Monica M Yepes
Neuroendocrine tumors of the breast are very rare accounting for less than 0.1% of all breast cancers and less than 1% of all neuroendocrine tumors. Focal neuroendocrine differentiation can be found in different histologic types of breast carcinoma including in situ and invasive ductal or invasive lobular. However, primary neuroendocrine carcinoma of the breast requires the expression of neuroendocrine markers in more than 50% of the cell population, the presence of ductal carcinoma in situ, and the absence of clinical evidence of concurrent primary neuroendocrine carcinoma of any other organ...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28228772/responses-of-nitrogen-utilization-and-apparent-nitrogen-loss-to-different-control-measures-in-the-wheat-and-maize-rotation-system
#16
Zhengping Peng, Yanan Liu, Yingchun Li, Yahya Abawi, Yanqun Wang, Mingxin Men, Duc-Anh An-Vo
Nitrogen (N) is an essential macronutrient for plant growth and excessive application rates can decrease crop yield and increase N loss into the environment. Field experiments were carried out to understand the effects of N fertilizers on N utilization, crop yield and net income in wheat and maize rotation system of the North China Plain (NCP). Compared to farmers' N rate (FN), the yield of wheat and maize in reduction N rate by 21-24% based on FN (RN) was improved by 451 kg ha(-1), N uptakes improved by 17 kg ha(-1) and net income increased by 1671 CNY ha(-1), while apparent N loss was reduced by 156 kg ha(-1)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28228741/perception-and-modeling-of-affective-qualities-of-musical-instrument-sounds-across-pitch-registers
#17
Stephen McAdams, Chelsea Douglas, Naresh N Vempala
Composers often pick specific instruments to convey a given emotional tone in their music, partly due to their expressive possibilities, but also due to their timbres in specific registers and at given dynamic markings. Of interest to both music psychology and music informatics from a computational point of view is the relation between the acoustic properties that give rise to the timbre at a given pitch and the perceived emotional quality of the tone. Musician and nonmusician listeners were presented with 137 tones produced at a fixed dynamic marking (forte) playing tones at pitch class D# across each instrument's entire pitch range and with different playing techniques for standard orchestral instruments drawn from the brass, woodwind, string, and pitched percussion families...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28228728/perivascular-adipose-tissue-s-impact-on-norepinephrine-induced-contraction-of-mesenteric-resistance-arteries
#18
Nadia Ayala-Lopez, Janice M Thompson, Stephanie W Watts
Background: Perivascular adipose tissue (PVAT) can decrease vascular contraction to NE. We tested the hypothesis that metabolism and/or uptake of vasoactive amines by mesenteric PVAT (MPVAT) could affect NE-induced contraction of the mesenteric resistance arteries. Methods: Mesenteric resistance vessels (MRV) and MPVAT from male Sprague-Dawley rats were used. RT-PCR and Western blots were performed to detect amine metabolizing enzymes. The Amplex® Red Assay was used to quantify oxidase activity by detecting the oxidase reaction product H2O2 and the contribution of PVAT on the mesenteric arteries' contraction to NE was measured by myography...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28228465/prognostic-value-of-residual-urine-volume-gfr-by-24-hour-urine-collection-and-egfr-in-patients-receiving-dialysis
#19
Mi Jung Lee, Jung Tak Park, Kyoung Sook Park, Young Eun Kwon, Hyung Jung Oh, Tae-Hyun Yoo, Yong-Lim Kim, Yon Su Kim, Chul Woo Yang, Nam-Ho Kim, Shin-Wook Kang, Seung Hyeok Han
BACKGROUND AND OBJECTIVES: Residual kidney function can be assessed by simply measuring urine volume, calculating GFR using 24-hour urine collection, or estimating GFR using the proposed equation (eGFR). We aimed to investigate the relative prognostic value of these residual kidney function parameters in patients on dialysis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Using the database from a nationwide prospective cohort study, we compared differential implications of the residual kidney function indices in 1946 patients on dialysis at 36 dialysis centers in Korea between August 1, 2008 and December 31, 2014...
February 22, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28228422/elevated-reward-response-to-receipt-of-palatable-food-predicts-future-weight-variability-in-healthy-weight-adolescents
#20
Samantha R Winter, Sonja Yokum, Eric Stice, Karol Osipowicz, Michael R Lowe
Background: Both an elevated brain-reward-region response to palatable food and elevated weight variability have been shown to predict future weight gain.Objective: We examined whether the brain-reward response to food is related to future weight variability.Design: A total of 162 healthy-weight adolescents, who were aged 14-18 y at baseline, were enrolled in the study and were assessed annually over a 3-y follow-up period with 127 participants completing the final 3-y follow-up assessment. With the use of functional magnetic resonance imaging, we tested whether the neural responses to a cue that signaled an impending milkshake receipt and the receipt of the milkshake predicted weight variability over the follow-up period...
February 22, 2017: American Journal of Clinical Nutrition
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