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https://www.readbyqxmd.com/read/28545221/correction-quantitative-ultrasound-assessment-of-breast-tumor-response-to-chemotherapy-using-a-multi-parameter-approach
#1
Hadi Tadayyon, Lakshmanan Sannachi, Mehrdad Gangeh, Ali Sadeghi-Naini, William Tran, Maureen E Trudeau, Kathleen Pritchard, Sonal Ghandi, Sunil Verma, Gregory J Czarnota
No abstract text is available yet for this article.
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28545154/site-specific-phosphorylation-of-casein-kinase-1-%C3%AE-ck1%C3%AE-regulates-its-activity-towards-the-circadian-regulator-per2
#2
Gracie Wee Ling Eng, Edison, David M Virshup
Circadian rhythms are intrinsic ~24 hour cycles that regulate diverse aspects of physiology, and in turn are regulated by interactions with the external environment. Casein kinase 1 delta (CK1δ, CSNK1D) is a key regulator of the clock, phosphorylating both stabilizing and destabilizing sites on the PER2 protein, in a mechanism known as the phosphoswitch. CK1δ can itself be regulated by phosphorylation on its regulatory domain, but the specific sites involved, and the role this plays in control of circadian rhythms as well as other CK1-dependent processes is not well understood...
2017: PloS One
https://www.readbyqxmd.com/read/28545085/splicing-factor-sf3b1k700e-mutant-dysregulates-erythroid-differentiation-via-aberrant-alternative-splicing-of-transcription-factor-tal1
#3
Shuiling Jin, Hairui Su, Ngoc-Tung Tran, Jing Song, Sydney S Lu, Ying Li, Suming Huang, Omar Abdel-Wahab, Yanyan Liu, Xinyang Zhao
More than 60% of myeloid dysplasia syndrome (MDS) contains mutations in genes encoding for splicing factors such as SF3B1, U2AF, SRSF2 and ZRSR2. Mutations in SF3B1 are associated with 80% cases of refractory anemia with ring sideroblast (RARS), a subtype of MDS. SF3B1K700E is the most frequently mutated site among mutations on SF3B1. Yet the molecular mechanisms on how mutations of splicing factors lead to defective erythropoiesis are not clear. SF3B1K700E mutant binds to an RNA binding protein, RBM15, stronger than the wild type SF3B1 protein in co-immunoprecipitation assays...
2017: PloS One
https://www.readbyqxmd.com/read/28544832/percutaneous-antegrade-trans-septal-closure-of-mitral-paravalvular-leak-without-creation-of-an-arteriovenous-wire-loop-in-patients-with-coexistent-mechanical-aortic-valve
#4
Teoman Kilic, Senol Coskun, Kurtulus Karauzum, Sadan Yavuz, Tayfun Sahin
BACKGROUND: Various approaches such as antegrade trans-septal, retrograde transfemoral and transapical techniques have been used to close mitral paravalvular leak (PVL) in patients with an aortic prosthesis. During the implementation of these techniques, an arteriovenous guidewire loop is often created for device delivery. However, passing through a mechanical aortic valve may cause hemodynamic compromise and prolong the procedure. To date, no studies have evaluated antegrade mitral PVL closure without the use of an arteriovenous wire loop in patients with a mechanical aortic prosthesis...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28544747/k-ras-mutation-and-amplification-status-is-predictive-of-resistance-and-high-basal-pakt-is-predictive-of-sensitivity-to-everolimus-in-biliary-tract-cancer-cell-lines
#5
Yvonne Yeung, David K Lau, Fiona Chionh, Hoanh Tran, Janson W T Tse, Andrew J Weickhardt, Mehrdad Nikfarjam, Andrew M Scott, Niall C Tebbutt, John M Mariadason
Advanced biliary tract cancer (BTC) has a poor prognosis and limited treatment options. The PI3K/Akt/mTOR signaling pathway is hyperactivated in a subset of BTCs and clinical activity to the mTOR inhibitor everolimus has been observed in some BTC patients. The goal of this study was to identify biomarkers predictive of everolimus response. Twenty BTC cell lines were assessed for everolimus sensitivity with a spectrum of growth inhibitory responses observed. Molecular biomarkers of sensitivity and resistance were identified by interrogation of the activation status of the Ras/MAPK and PI3K/Akt/mTOR pathways...
May 24, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28544159/simultaneous-measurement-of-t1-b1-and-pharmacokinetic-model-parameters-using-active-contrast-encoding-ace-mri
#6
Jin Zhang, Kerryanne Winters, Olivier Reynaud, Sungheon Gene Kim
The aim of this study was to assess the feasibility of combining dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) with the measurement of the radiofrequency (RF) transmit field B1 and pre-contrast longitudinal relaxation time T10 . A novel approach has been proposed to simultaneously estimate B1 and T10 from a modified DCE-MRI scan that actively encodes the washout phase of the curve with different amounts of T1 and B1 weighting using multiple flip angles and repetition times, hence referred to as active contrast encoding (ACE)-MRI...
May 22, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28544085/e-tc-development-and-pilot-testing-of-a-web-based-intervention-to-reduce-anxiety-and-depression-in-survivors-of-testicular-cancer
#7
L E Heiniger, A B Smith, I Olver, P Grimison, B Klein, A Wootten, J-A M Abbott, M A Price, M McJannett, B Tran, M R Stockler, H Gurney, P N Butow
e-TC is an online intervention designed to address common psychosocial concerns of testicular cancer survivors. It aims to reduce anxiety, depression and fear of cancer recurrence by providing evidence-based information and psychological intervention. This paper details the development and pilot testing of e-TC. During pilot testing, 25 men (with varying psychological profiles) who had completed treatment for testicular cancer, 6 months to 5 years ago (which had not recurred), used e-TC over a 10-week period and provided quantitative and qualitative feedback on the feasibility and acceptability of the programme...
May 22, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28544072/morphological-control-of-heteroleptic-cis-and-trans-pd2-l2-l-2-cages
#8
Witold M Bloch, Julian J Holstein, Wolf Hiller, Guido H Clever
Control over the integrative self-sorting of metallo-supramolecular assemblies opens up possibilities for introducing increased complexity and function into a single self-assembled architecture. Herein, the relationship between the geometry of three ligand components and morphology of three self-sorted heteroleptic [Pd2 L2 L'2 ](4+) cages is examined. Pd-mediated assembly of two bis-monodentate pyridyl ligands with native bite angles of 75° and 120° affords a cis-[Pd2 L2 L'2 ](4+) cage while the same reaction with two ligands with bite angles of 75° and 60° gives an unprecedented, self-penetrating structural motif; a trans-[Pd2 (anti-L)2 L'2 ](4+) heteroleptic cage with a "doubly bridged figure eight" topology...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544039/cofactor-free-direct-photoactivation-of-enoate-reductases-for-asymmetric-reduction-of-c-c-bonds
#9
Sahng Ha Lee, Da Som Choi, Milja Pesic, Yang Woo, Caroline Paul, Frank Hollmann, Chan Beum Park
Enoate reductases from the family of Old Yellow Enzymes (OYEs) can catalyze stereoselective trans-hydrogenation of activated C=C bonds. Here, we report visible light-driven activation of OYEs through NAD(P)H-free, direct transfer of photoexcited electrons from xanthene dyes to the prosthetic flavin moiety. Our spectroscopic and electrochemical analyses verified spontaneous association of rose bengal and its derivatives with OYEs. Illumination of a white light-emitting-diode triggered photoreduction of OYEs by xanthene dyes, which facilitated the enantioselective reduction of C=C bonds in the absence of NADH...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28543955/percutaneous-trans-hepatic-route-for-dual-chamber-pacemaker-implantation-in-a-patient-with-post-glenn-operation
#10
Jiafu Wei, Ying Xu, Yuan Fang
No abstract text is available yet for this article.
May 24, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28543885/dce-mri-prediction-of-survival-time-for-patients-with-glioblastoma-multiforme-using-an-adaptive-neuro-fuzzy-based-model-and-nested-model-selection-technique
#11
Azimeh N V Dehkordi, Alireza Kamali-Asl, Ning Wen, Tom Mikkelsen, Indrin J Chetty, Hassan Bagher-Ebadian
This pilot study investigates the construction of an Adaptive Neuro-Fuzzy Inference System (ANFIS) for the prediction of the survival time of patients with glioblastoma multiforme (GBM). ANFIS is trained by the pharmacokinetic (PK) parameters estimated by the model selection (MS) technique in dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) data analysis, and patient age. DCE-MRI investigations of 33 treatment-naïve patients with GBM were studied. Using the modified Tofts model and MS technique, the following physiologically nested models were constructed: Model 1, no vascular leakage (normal tissue); Model 2, leakage without efflux; Model 3, leakage with bidirectional exchange (influx and efflux)...
May 25, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28543867/an-age-dependent-fitness-cost-of-migration-old-trans-saharan-migrating-spoonbills-breed-later-than-those-staying-in-europe-and-late-breeders-have-lower-recruitment
#12
Tamar Lok, Linde Veldhoen, Otto Overdijk, Joost M Tinbergen, Theunis Piersma
Migration is a widespread phenomenon in the animal kingdom. On the basis of the considerable variation that exists between and within species, and even within populations, we may be able to infer the (age- and sex-specific) ecological trade-offs and constraints moulding migration systems from assessments of fitness associated with migration and wintering in different areas. During three consecutive breeding seasons, we compared the reproductive performance (timing of breeding, breeding success, chick body condition and post-fledging survival) of Eurasian spoonbills Platalea leucorodia that breed at a single breeding site in The Netherlands, but migrate different distances (ca...
May 25, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28543784/improvement-of-hydration-and-epidermal-barrier-function-in-human-skin-by-a-novel-compound-isosorbide-dicaprylate
#13
Ratan K Chaudhuri, Krzysztof Bojanowski
OBJECTIVE: The study involved the synthesis of a novel derivative of caprylic acid - isosorbide dicaprylate (IDC) - and the evaluation of its potential in improving water homeostasis and epidermal barrier function in human skin. METHODS: The effect of IDC on gene expression was assayed in skin organotypic cultures by DNA microarrays. The results were then confirmed for a few key genes by quantitative PCR, immuno- and cytochemistry. Final validation of skin hydration properties was obtained by four separate clinical studies...
May 24, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28543757/transcatheter-aortic-valve-replacement-for-a-bicuspid-aortic-valve-following-replacement-of-the-ascending-aorta
#14
Paolo Nardi, Marco Russo, Guglielmo Saitto, Gian Paolo Ussia, Giovanni Ruvolo
A normally functioning bicuspid aortic valve that is spared during replacement of the ascending aorta may ultimately require replacement due to structural deterioration. We report the use of trans-aortic valve replacement to replace a stenotic BAC 17 years following replacement of the ascending aorta.
May 21, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28543191/methadone-buprenorphine-and-naltrexone-for-the-treatment-of-opioid-use-disorder-in-pregnant-women
#15
Tran H Tran, Brooke L Griffin, Rebecca H Stone, Kathleen M Vest, Timothy J Todd
Pregnant women with opioid use disorder can be treated with methadone, buprenorphine, or naltrexone to reduce opioid use and improve retention to treatment. In this review, we compare the pregnancy outcomes of methadone, buprenorphine, and naltrexone in clinical trials and discuss the potential behavioral and developmental effects of these agents seen in offspring in animal studies. Important clinical considerations in the management of opioid use disorder in pregnant women and their infants are also discussed...
May 24, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28542916/spatial-rearrangement-of-purkinje-cell-subsets-forms-the-transverse-and-longitudinal-compartmentalization-in-the-mouse-embryonic-cerebellum
#16
Suteera Vibulyaseck, Hirofumi Fujita, Yuanjun Luo, Anh Khoa Tran, Arata Oh-Nishi, Yuichi Ono, Shinji Hirano, Izumi Sugihara
Transversely-oriented lobules and longitudinally-arrayed stripes of Purkinje cell subsets subdivide the cerebellar cortex into multiple compartments that are involved in diverse functions. In the mammalian cerebellum, anterior and posterior lobules, which are involved in somatosensorimotor function, show an alternation of aldolase C (zebrin II) -positive and -negative stripes, whereas the central lobules (lobules VIb-VII and crus I), which are implicated in non-motor functions, show a laterally-expanded arrangement solely of aldolase C-positive stripes...
May 24, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28542630/dose-dependent-effect-of-silver-nanoparticles-agnps-on-fertility-and-survival-of-drosophila-an-in-vivo-study
#17
Akanksha Raj, Prasanna Shah, Namita Agrawal
Silver nanoparticles (AgNPs) containing consumer products have been proliferating in the market due to its unique antimicrobial property, however, lack of in-depth knowledge about their potential effect on human health in a longer run is of great concern. Therefore, we investigated dose-dependent in vivo effect of AgNPs using Drosophila as a model system. Drosophila, a genetically tractable organism with distinct developmental stages, short life cycle and significant homology with human serves as an ideal organism to study nanomaterial-mediated toxicity...
2017: PloS One
https://www.readbyqxmd.com/read/28542579/transcriptomic-dissection-reveals-wide-spread-differential-expression-in-chickpea-during-early-time-points-of-fusarium-oxysporum-f-sp-ciceri-race-1-attack
#18
Sumanti Gupta, Anirban Bhar, Moniya Chatterjee, Amartya Ghosh, Sampa Das
Plants' reaction to underground microorganisms is complex as sessile nature of plants compels them to prioritize their responses to diverse microorganisms both pathogenic and symbiotic. Roots of important crops are directly exposed to diverse microorganisms, but investigations involving root pathogens are significantly less. Thus, more studies involving root pathogens and their target crops are necessitated to enrich the understanding of underground interactions. Present study reported the molecular complexities in chickpea during Fusarium oxysporum f...
2017: PloS One
https://www.readbyqxmd.com/read/28542511/association-of-cyp2a6-activity-with-lung-cancer-incidence-in-smokers-the-multiethnic-cohort-study
#19
Sungshim L Park, Sharon E Murphy, Lynne R Wilkens, Daniel O Stram, Stephen S Hecht, Loïc Le Marchand
While smoking is the primary cause of lung cancer, only 11-24% of smokers develop the malignancy over their lifetime. The primary addictive agent in tobacco smoke is nicotine and variation in nicotine metabolism may influence the smoking levels of an individual. Therefore, inter-individual variation in lung cancer risk among smokers may be due in part to differences in the activity of enzymes involved in nicotine metabolism. In most smokers, cytochrome P450 2A6 (CYP2A6)-catalyzed C-oxidation accounts for >75% of nicotine metabolism, and the activity of this enzyme has been shown to correlate with the amount of nicotine and carcinogens drawn from cigarettes...
2017: PloS One
https://www.readbyqxmd.com/read/28542502/in-vivo-transduction-of-neurons-with-tat-uch-l1-protects-brain-against-controlled-cortical-impact-injury
#20
Hao Liu, Marie E Rose, Xiecheng Ma, Sherman Culver, C Edward Dixon, Steven H Graham
Many mechanisms or pathways are involved in secondary post-traumatic brain injury, such as the ubiquitin-proteasome pathway (UPP), axonal degeneration and neuronal cell apoptosis. UCH-L1 is a protein that is expressed in high levels in neurons and may have important roles in the UPP, autophagy and axonal integrity. The current study aims to evaluate the role of UCH-L1 in post-traumatic brain injury (TBI) and its potential therapeutic effects. A novel protein was constructed that fused the protein transduction domain (PTD) of trans-activating transduction (TAT) protein with UCH-L1 (TAT-UCH-L1) in order to promote neuronal transduction...
2017: PloS One
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