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https://www.readbyqxmd.com/read/29331090/enhanced-chondrogenesis-of-mesenchymal-stem-cells-over-silk-fibroin-chitosan-chondroitin-sulfate-three-dimensional-scaffold-in-dynamic-culture-condition
#1
Parinita Agrawal, Krishna Pramanik, Varshini Vishwanath, Amit Biswas, Akalabya Bissoyi, Pradeep Kumar Patra
Chondroitin sulfate (Ch) is one of the main structural components of cartilage tissue, therefore, its presence in tissue engineered scaffold is expected to enhance cartilage regeneration. Previously, silk fibroin/chitosan (SF/CS) blend was proven to be a potential biomaterial for tissue development. In this study, the effect of Ch on physicochemical and biological properties of SF/CS blend was investigated and scaffolds with 0.8 wt% Ch was found to be favorable. The scaffolds possess pore size of 37-212 µm, contact angle 46...
January 13, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29328519/surface-modification-using-the-biomimetic-method-in-alumina-zirconia-porous-ceramics-obtained-by-the-replica-method
#2
André D R Silva, Willian R Rigoli, Denise Osiro, Daphne C R Mello, Luana M R Vasconcellos, Anderson O Lobo, Eliria M J A Pallone
The modification of biomaterials approved by the Food and Drug Administration could be an alternative to reduce the period of use in humans. Porous bioceramics are widely used as support structures for bone formation and repair. This composite has essential characteristics for an implant, including good mechanical properties, high chemical stability, biocompatibility and adequate aesthetic appearance. Here, three-dimensional porous scaffolds of Al2 O3 containing 5% by volume of ZrO2 were produced by the replica method...
January 12, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29328111/development-of-a-spatially-dispersed-short-coherence-interferometry-sensor-using-diffraction-grating-orders-publisher-s-note
#3
Mothana A Hassan, Haydn Martin, Xiang Jiang
This publisher's note amends the author listing and the funding and acknowledgment sections in Appl. Opt.57, 6391 (2017)APOPAI0003-693510.1364/AO.56.006391.
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29327988/alexa-siri-cortana-and-more-an-introduction-to-voice-assistants
#4
Matthew B Hoy
Voice assistants are software agents that can interpret human speech and respond via synthesized voices. Apple's Siri, Amazon's Alexa, Microsoft's Cortana, and Google's Assistant are the most popular voice assistants and are embedded in smartphones or dedicated home speakers. Users can ask their assistants questions, control home automation devices and media playback via voice, and manage other basic tasks such as email, to-do lists, and calendars with verbal commands. This column will explore the basic workings and common features of today's voice assistants...
January 2018: Medical Reference Services Quarterly
https://www.readbyqxmd.com/read/29327217/cryobiotechnology-of-apple-malus-spp-development-progress-and-future-prospects
#5
REVIEW
Min-Rui Wang, Long Chen, Jaime A Teixeira da Silva, Gayle M Volk, Qiao-Chun Wang
Cryopreservation provides valuable genes for further breeding of elite cultivars, and cryotherapy improves the production of virus-free plants in Malus spp., thus assisting the sustainable development of the apple industry. Apple (Malus spp.) is one of the most economically important temperate fruit crops. Wild Malus genetic resources and existing cultivars provide valuable genes for breeding new elite cultivars and rootstocks through traditional and biotechnological breeding programs. These valuable genes include those resistant to abiotic factors such as drought and salinity, and to biotic factors such as fungi, bacteria and aphids...
January 11, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29325154/growth-and-carbon-balance-are-differently-regulated-by-tree-and-shoot-fruiting-contexts-an-integrative-study-on-apple-genotypes-with-contrasted-bearing-patterns
#6
Benoît Pallas, Sylvie Bluy, Jérôme Ngao, Sébastien Martinez, Anne Clément-Vidal, Jean-Jacques Kelner, Evelyne Costes
In plants, carbon source-sink relationships are assumed to affect their reproductive effort. In fruit trees, carbon source-sink relationships are likely to be involved in their fruiting behavior. In apple, a large variability in fruiting behaviors exists, from regular to biennial, which has been related to the within-tree synchronization vs desynchronization of floral induction in buds. In this study, we analyzed if carbon assimilation, availability and fluxes as well as shoot growth differ in apple genotypes with contrasted behaviors...
January 9, 2018: Tree Physiology
https://www.readbyqxmd.com/read/29324860/correction-polygalacturonase-gene-pgxb-in-aspergillus-niger-is-a-virulence-factor-in-apple-fruit
#7
Cheng-Qian Liu, Kang-Di Hu, Ting-Ting Li, Ying Yang, Feng Yang, Yan-Hong Li, He-Ping Liu, Xiao-Yan Chen, Hua Zhang
[This corrects the article DOI: 10.1371/journal.pone.0173277.].
2018: PloS One
https://www.readbyqxmd.com/read/29324498/five-steps-to-successfully-implement-and-evaluate-propensity-score-matching-in-clinical-research-studies
#8
Steven J Staffa, David Zurakowski
In clinical research, the gold standard level of evidence is the randomized controlled trial (RCT). The availability of nonrandomized retrospective data is growing; however, a primary concern of analyzing such data is comparability of the treatment groups with respect to confounding variables. Propensity score matching (PSM) aims to equate treatment groups with respect to measured baseline covariates to achieve a comparison with reduced selection bias. It is a valuable statistical methodology that mimics the RCT, and it may create an "apples to apples" comparison while reducing bias due to confounding...
January 9, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29322633/preclinical-evaluation-of-melanocyte-transplantation-by-chitosan-based-melanocyte-spheroid-patch-to-skin-prepared-by-controlled-sunburn-blistering
#9
Sabrina Mai-Yi Fan, Po-Hua Chen, Yu-Ting Tseng, Jin-Bon Hong, Wannhsin Chen, Tsen-Fang Tsai, Sung-Jan Lin
Transplantation of autologous cultured melanocytes as cell suspension has been used for the treatment of vitiligo. The recipient site is often prepared by laser-mediated dermabrasion. Such procedures encounter disadvantages including prolonged transplantation duration, unsecured cell adherence to lesional skin and potential scarring. To improve this, here we propose a method by preparing recipient sites before transplantation by psoralen and ultraviolet A (PUVA)-induced sunburn followed by transplanting cells with a chitosan-based melanocyte spheroid patch...
January 10, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29322629/material-dependent-fretting-corrosion-in-spinal-fusion-devices-evaluation-of-onset-and-long-term-response
#10
Vaneet Singh, Jacob P Shorez, Sachin A Mali, Nadim J Hallab, Jeremy L Gilbert
Posterior spinal fusion implants include number of interconnecting components, which are subjected to micromotion under physiological loading conditions inducing a potential for fretting corrosion. There is very little known about the fretting corrosion in these devices in terms of the minimum angular displacement (threshold) necessary to induce fretting corrosion or the amount of fretting corrosion that can arise during the life of the implant. Therefore, the first goal was to evaluate the threshold fretting corrosion in three anatomical orientations and second the long-term fretting corrosion for the three different material types of spinal implants under physiological loading conditions...
January 10, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29322077/near-infrared-hyperspectral-dataset-of-healthy-and-infected-apple-tree-leaves-images-for-the-early-detection-of-apple-scab-disease
#11
Maroua Nouri, Nathalie Gorretta, Pierre Vaysse, Michel Giraud, Christian Germain, Barna Keresztes, Jean-Michel Roger
This dataset presents two series of hyperspectral images of healthy and infected apple tree leaves acquired daily, from two days after inoculation until an advanced stage of infection (11 days after inoculation). The hyperspectral images were calibrated by reflection correction and registered to match the geometry of one reference image. On the last experiment day, scab positions are provided.
February 2018: Data in Brief
https://www.readbyqxmd.com/read/29321882/timescale-effects-on-the-environmental-control-of-carbon-and-water-fluxes-of-an-apple-orchard
#12
Leonardo Montagnani, Damiano Zanotelli, Massimo Tagliavini, Enrico Tomelleri
Model parameterization and validation of earth-atmosphere interactions are generally performed using a single timescale (e.g., nearly instantaneous, daily, and annual), although both delayed responses and hysteretic effects have been widely recognized. The lack of consideration of these effects hampers our capability to represent them in empirical- or process-based models. Here we explore, using an apple orchard ecosystem in the North of Italy as a simplified case study, how the considered timescale impacts the relative importance of the single environmental variables in explaining observed net ecosystem exchange (NEE) and evapotranspiration (ET)...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321037/acute-aortoiliac-occlusive-disease-during-percutaneous-transluminal-angioplasty-in-the-setting-of-st-elevation-myocardial-infarction-a-case-report
#13
Anthony H Kashou, Nabil Braiteh, Ali Zgheib, Hisham E Kashou
BACKGROUND: Aortoiliac occlusive disease, which is also referred to as Leriche syndrome, is a chronic atherosclerotic occlusive disease that occurs at the level of the aortic bifurcation. It is often thought to present with a triad of clinical symptoms: (1) intermittent lower extremity vascular claudication, (2) impotence, and (3) weak/absent femoral pulses. CASE PRESENTATION: We report a case of a 47-year-old Caucasian woman who presented with an acute inferior ST-elevation myocardial infarction...
January 11, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29320996/healthy-apple-program-to-support-child-care-centers-to-alter-nutrition-and-physical-activity-practices-and-improve-child-weight-a-cluster-randomized-trial
#14
Jodi D Stookey, Jane Evans, Curtis Chan, Lisa Tao-Lew, Tito Arana, Susan Arthur
BACKGROUND: North Carolina Nutrition and Physical Activity Self-Assessment for Child Care (NAP SACC) resources improve child body mass index (BMI) when the resources are introduced by nurses to child care providers, and offered with workshops and incentives. In San Francisco, public health and child care agencies partnered to adapt NAP SACC resources into an annual "Healthy Apple" quality improvement program (HAP). METHODS: This cluster randomized controlled trial pilot-tested integration of the HAP with bi-annual public health screenings by nurses...
December 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/29316208/effect-of-bone-sialoprotein-coated-three-dimensional-printed-calcium-phosphate-scaffolds-on-primary-human-osteoblasts
#15
Anja Klein, Andreas Baranowski, Ulrike Ritz, Hermann Götz, Sascha Heinemann, Stefan Mattyasovszky, Pol M Rommens, Alexander Hofmann
The combination of the two techniques of rapid prototyping 3D-plotting and bioactive surface functionalization is presented, with emphasis on the in vitro effect of Bone Sialoprotein (BSP) on primary human osteoblasts (hOBs). Our primary objective was to demonstrate the BSP influence on the expression of distinctive osteoblast markers in hOBs. Secondary objectives included examinations of the scaffolds' surface and the stability of BSP-coating as well as investigations of cell viability and proliferation. 3D-plotted calcium phosphate cement (CPC) scaffolds were coated with BSP via physisorption...
January 9, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29315644/solar-uv-light-regulates-flavonoid-metabolism-in-apple-malus-x-domestica
#16
Rebecca A Henry-Kirk, Blue Plunkett, Miriam Hall, Tony McGhie, Andrew C Allan, Jason J Wargent, Richard V Espley
Ultraviolet-B light (UV-B) is one environmental signal perceived by plants that affects the flavonoid pathway and influences the levels of anthocyanins, flavonols and proanthocyanidins. To understand the mechanisms underlying UV exposure, apple trees were grown under spectral filters that altered transmission of solar UV light. Fruit analysis showed that UV induced changes in physiology, metabolism and gene expression levels during development over a season. These changes were sustained after storage. Under low UV ripening was delayed, fruit size decreased, and anthocyanin and flavonols were reduced...
January 6, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29315028/effects-of-pichia-guilliermondii-and-hot-air-treatment-on-the-postharvest-preservation-of-red-fuji-apple-quality-attributes
#17
Yan Zhao, Jingjing Yin
The effects of individual and combined Pichia guilliermondii (at 1 × 108 CFU mL-1) and hot air (at 38°C for 96 h) treatments on the three major postharvest diseases Botrytis cinerea, Penicillium expansum, and Colletotrichum gloeosporioides, as well as the quality and antioxidant content of Red Fuji ( Malus pumila var. domestica) apple fruit, were investigated in this work. Results suggested that the combined hot air and antagonistic yeast ( P. guilliermondii) treatment effectively and completely inhibited the infection of apple fruit wounds by the three major postharvest diseases...
February 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29314748/cyclotriphosphate-associated-to-fluoride-increases-hydroxyapatite-resistance-to-acid-attack
#18
Jackeline G Amaral, Juliano P Pessan, José Antonio S Souza, João Carlos S Moraes, Alberto Carlos B Delbem
This study evaluated the effect of sodium trimetaphosphate (TMP) associated or not with fluoride (F) on the structure and dissolution of carbonated hydroxyapatite (CHA). Synthetic CHA powder (1.0 g) was suspended in solutions containing TMP at 0-10%, associated with 0, 1100, 4500, or 9000 ppm F, and the precipitates were submitted to a pH cycle (n = 6/group). Samples were analyzed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. F, calcium (Ca) and phosphorous (P) concentrations were determined in CHA, while P and F were analyzed in the supernatants...
January 4, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29314671/different-compact-hybrid-langmuir-blodgett-film-coatings-modify-biomineralization-and-the-ability-of-osteoblasts-to-grow
#19
Amanda N de Faria, Marcos A E Cruz, Gília C M Ruiz, Daniela C Zancanela, Pietro Ciancaglini, Ana P Ramos
Calcium phosphates (CaPs) are biomaterials widely used in tissue regeneration with outstanding biological performance. Although the tremendous improvements achieved in CaP's materials research over the years, their interaction with physiological environments still need to be fully understood. The aim of this study is to explore a biomimetic Langmuir-Blodgett (LB) membrane to template the growth of hydroxyapatite (HAp) coatings on Ti surfaces and the ability of these coatings in inducing biomineralization by osteoblasts cultured in vitro...
January 4, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29311201/travelling-wave-amplitudes-as-solutions-of-the-phase-field-crystal-equation
#20
I G Nizovtseva, P K Galenko
The dynamics of the diffuse interface between liquid and solid states is analysed. The diffuse interface is considered as an envelope of atomic density amplitudes as predicted by the phase-field crystal model (Elder et al. 2004 Phys. Rev. E70, 051605 (doi:10.1103/PhysRevE.70.051605); Elder et al. 2007 Phys. Rev. B75, 064107 (doi:10.1103/PhysRevB.75.064107)). The propagation of crystalline amplitudes into metastable liquid is described by the hyperbolic equation of an extended Allen-Cahn type (Galenko & Jou 2005 Phys...
February 28, 2018: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
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