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https://www.readbyqxmd.com/read/28437969/experimental-generation-of-complex-optical-fields-for-diffraction-limited-optical-focus-with-purely-transverse-spin-angular-momentum
#1
Jian Chen, Chenhao Wan, Lingjiang Kong, Qiwen Zhan
We demonstrate a method to generate complex optical fields at the pupil plane of a high numerical aperture (NA) objective lens for the creation of diffraction limited optical focus with purely transverse spin angular momentum. The complex optical fields are analytically deduced through reversing the radiated patterns from two electric dipoles, which are located at the focal point of the high NA lens and oscillate respectively in x- and z- directions with phase difference of π/2. The derived fields can be experimentally created with a vectorial optical field generator...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437900/model-and-reconstruction-of-a-k-edge-contrast-agent-distribution-with-an-x-ray-photon-counting-detector
#2
Bo Meng, Wenxiang Cong, Yan Xi, Bruno De Man, Jian Yang, Ge Wang
Contrast-enhanced computed tomography (CECT) helps enhance the visibility for tumor imaging. When a high-Z contrast agent interacts with X-rays across its K-edge, X-ray photoelectric absorption would experience a sudden increment, resulting in a significant difference of the X-ray transmission intensity between the left and right energy windows of the K-edge. Using photon-counting detectors, the X-ray intensity data in the left and right windows of the K-edge can be measured simultaneously. The differential information of the two kinds of intensity data reflects the contrast-agent concentration distribution...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437720/determination-of-a-novel-anticancer-ampk-activator-hernandezine-in-rat-plasma-and-tissues-with-a-validated-uhplc-ms-ms-method-application-to-pharmacokinetics-and-tissue-distribution-study
#3
Yang Song, Zhibin Wang, Baozhen Zhang, Yujia Zhang, Weipeng Zhang, Chunjuan Yang, Fanhao Meng, Xuesong Feng
Hernandezine, a novel anticancer AMPK activator, is a major active constituent of Thalictrum Ranunculaceae. A simple, specific and sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS) method has been developed and validated for the quantification of hernandezine in rat plasma and tissues after intravenous administration. Sample preparation was carried out through a protein-precipitation extraction with acetonitrile using tetrandrine as internal standard (IS). The chromatographic separation was achieved by using an Agilent ZORBAX Eclipse Plus C18 column with a mobile phase of acetonitrile and water (containing 10mM ammonium acetate) in an isocratic elution way...
April 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28437608/crispr-cas9-mediated-dna-unwinding-detected-using-site-directed-spin-labeling
#4
Narin S Tangprasertchai, Rosa Di Felice, Xiaojun Zhang, Ian M Slaymaker, Carolina Vazquez Reyes, Wei Jiang, Remo Rohs, Peter Z Qin
The RNA-guided CRISPR-Cas9 nuclease has revolutionized genome engineering, yet its mechanism for DNA target selection is not fully understood. A crucial step in Cas9 target recognition involves unwinding of the DNA duplex to form a three-stranded R-loop structure. Work reported here demonstrates direct detection of Cas9-mediated DNA unwinding by a combination of site-directed spin labeling and Molecular Dynamics simulations. The results support a model in which the unwound non-target strand is stabilized by a positively-charged patch located between the two nuclease domains of Cas9, and reveal uneven increases in flexibility along the unwound non-target strand upon scissions of the DNA backbone...
April 24, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28437555/polymorphisms-of-alui-and-hin1i-loci-of-the-igf-1r-gene-and-their-genetic-effects-on-growth-traits-in-bian-chickens
#5
P F Wu, D Wang, C F Jin, X Q Zhang, H Q Wu, L Zhang, F X Ding, K Z Xie, G X Zhang
Growth traits are important economic traits in broiler chicken production. AluI and Hin1I loci are two restriction sites, which are respectively located in exons 2 and 3 of the IGF-1R gene. These two loci are significantly related to the growth traits in Jinghai Yellow chickens. In this study, a correlation analysis was performed between these two loci and the growth traits of Bian chickens. The results showed a G376A mutation at the AluI site and a C919A mutation at the Hin1I site, which respectively resulted in three genotypes AA, AB, and BB in exon 2 and three genotypes CC, CD, and DD in exon 3...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437551/association-of-interleukin-6-gene-polymorphisms-and-circulating-levels-with-keloid-scars-in-a-chinese-han-population
#6
X J Zhu, W Z Li, H Li, C Q Fu, J Liu
The aim of the present study is to explore the effect of IL-6 gene polymorphisms on the development of keloid scar (KS) in the Chinese Han population. Genotyping of IL-6 was performed by the polymerase chain reaction (PCR), followed by restriction fragment length polymorphism assays (PCR-RFLP). Serum level of IL-6 was measured using enzyme-linked immunosorbent assay (ELISA). Results indicated that when the IL-6 -572 CC homozygote genotype was used as the reference group, the GG genotype was found to be associated with a significantly increased risk of KS (GG vs CC: OR = 2...
April 20, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28437538/effects-of-diagnosis-by-newborn-screening-for-cystic-fibrosis-on-weight-and-length-in-the-first-year-of-life
#7
Daniel H Leung, Sonya L Heltshe, Drucy Borowitz, Daniel Gelfond, Margaret Kloster, James E Heubi, Michael Stalvey, Bonnie W Ramsey
Importance: Since the implementation of universal newborn screening (NBS) for cystic fibrosis (CF), the timing and magnitude of growth deficiency or its association with correlates of disease among infants with CF who underwent NBS has not been well described. Objective: To examine incremental weight gain, linear growth, and clinical features in the first year of life among infants with CF who underwent NBS. Design, Setting, and Participants: The Baby Observational and Nutrition Study (BONUS), a multicenter, longitudinal, observational cohort study, was conducted during regular CF clinic visits in the first 12 months of life at 28 US Cystic Fibrosis Foundation-accredited Care Centers from January 7, 2012, through May 31, 2015...
April 24, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28437447/carbonic-anhydrase-iii-car3-is-not-required-for-fatty-acid-synthesis-and-does-not-protect-against-high-fat-diet-induced-obesity-in-mice
#8
Sarah W Renner, Lauren M Walker, Lawrence J Forsberg, Jonathan Z Sexton, Jay E Brenman
Carbonic anhydrases are a family of enzymes that catalyze the reversible condensation of water and carbon dioxide to carbonic acid, which spontaneously dissociates to bicarbonate. Carbonic anhydrase III (Car3) is nutritionally regulated at both the mRNA and protein level. It is highly enriched in tissues that synthesize and/or store fat: liver, white adipose tissue, brown adipose tissue, and skeletal muscle. Previous characterization of Car3 knockout mice focused on mice fed standard diets, not high-fat diets that significantly alter the tissues that highly express Car3...
2017: PloS One
https://www.readbyqxmd.com/read/28437115/development-and-implementation-of-advanced-fitting-methods-for-the-calculation-of-accurate-molecular-structures
#9
Marco Mendolicchio, Emanuele Penocchio, Daniele Licari, Nicola Tasinato, Vincenzo Barone
The determination of accurate equilibrium molecular structures plays a fundamental role for understanding many physical-chemical properties of molecules, ranging from the precise evaluation of the electronic structure to the analysis of dynamical and environmental effects in tuning their overall behavior. For this purpose the so-called semi-experimental approach, based on a non-linear least-squares fit of the moments of inertia associated to a set of available isotopologues, allows one to obtain very accurate results, without the unfavorable computational cost characterizing high-level quantum chemical methods...
April 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28436990/tcrp1-promotes-nih-3t3-cell-transformation-by-over-activating-pdk1-and-akt1
#10
C Wang, H Liu, Q Qiu, Z Zhang, Y Gu, Z He
Tongue cancer resistance-related protein 1 (TCRP1) gene was first cloned from the multidrug resistance tongue cancer cell (Tca8113/pingyangmycin) in our lab. Our precious studies demonstrated that TCRP1 was involving in chemotherapy and radiotherapy resistance of tongue cancer cells, lung cancer cells and ovarian cancer cells. In this study, we showed that TCRP1 overexpression promotes cell transformation and tumorigenesis through hyperphosphorylation of the oncogenic kinase 3-phosphoinositide-dependent protein kinase-1 (PDK1) and AKT1, whereas inhibition of PDK1 by OSU-03012 or PDK1 small interfering RNA reversed TCRP1-mediated cell transformation...
April 24, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28436984/genomic-analyses-identify-hundreds-of-variants-associated-with-age-at-menarche-and-support-a-role-for-puberty-timing-in-cancer-risk
#11
Felix R Day, Deborah J Thompson, Hannes Helgason, Daniel I Chasman, Hilary Finucane, Patrick Sulem, Katherine S Ruth, Sean Whalen, Abhishek K Sarkar, Eva Albrecht, Elisabeth Altmaier, Marzyeh Amini, Caterina M Barbieri, Thibaud Boutin, Archie Campbell, Ellen Demerath, Ayush Giri, Chunyan He, Jouke J Hottenga, Robert Karlsson, Ivana Kolcic, Po-Ru Loh, Kathryn L Lunetta, Massimo Mangino, Brumat Marco, George McMahon, Sarah E Medland, Ilja M Nolte, Raymond Noordam, Teresa Nutile, Lavinia Paternoster, Natalia Perjakova, Eleonora Porcu, Lynda M Rose, Katharina E Schraut, Ayellet V Segrè, Albert V Smith, Lisette Stolk, Alexander Teumer, Irene L Andrulis, Stefania Bandinelli, Matthias W Beckmann, Javier Benitez, Sven Bergmann, Murielle Bochud, Eric Boerwinkle, Stig E Bojesen, Manjeet K Bolla, Judith S Brand, Hiltrud Brauch, Hermann Brenner, Linda Broer, Thomas Brüning, Julie E Buring, Harry Campbell, Eulalia Catamo, Stephen Chanock, Georgia Chenevix-Trench, Tanguy Corre, Fergus J Couch, Diana L Cousminer, Angela Cox, Laura Crisponi, Kamila Czene, George Davey Smith, Eco J C N de Geus, Renée de Mutsert, Immaculata De Vivo, Joe Dennis, Peter Devilee, Isabel Dos-Santos-Silva, Alison M Dunning, Johan G Eriksson, Peter A Fasching, Lindsay Fernández-Rhodes, Luigi Ferrucci, Dieter Flesch-Janys, Lude Franke, Marike Gabrielson, Ilaria Gandin, Graham G Giles, Harald Grallert, Daniel F Gudbjartsson, Pascal Guénel, Per Hall, Emily Hallberg, Ute Hamann, Tamara B Harris, Catharina A Hartman, Gerardo Heiss, Maartje J Hooning, John L Hopper, Frank Hu, David J Hunter, M Arfan Ikram, Hae Kyung Im, Marjo-Riitta Järvelin, Peter K Joshi, David Karasik, Manolis Kellis, Zoltan Kutalik, Genevieve LaChance, Diether Lambrechts, Claudia Langenberg, Lenore J Launer, Joop S E Laven, Stefania Lenarduzzi, Jingmei Li, Penelope A Lind, Sara Lindstrom, YongMei Liu, Jian'an Luan, Reedik Mägi, Arto Mannermaa, Hamdi Mbarek, Mark I McCarthy, Christa Meisinger, Thomas Meitinger, Cristina Menni, Andres Metspalu, Kyriaki Michailidou, Lili Milani, Roger L Milne, Grant W Montgomery, Anna M Mulligan, Mike A Nalls, Pau Navarro, Heli Nevanlinna, Dale R Nyholt, Albertine J Oldehinkel, Tracy A O'Mara, Sandosh Padmanabhan, Aarno Palotie, Nancy Pedersen, Annette Peters, Julian Peto, Paul D P Pharoah, Anneli Pouta, Paolo Radice, Iffat Rahman, Susan M Ring, Antonietta Robino, Frits R Rosendaal, Igor Rudan, Rico Rueedi, Daniela Ruggiero, Cinzia F Sala, Marjanka K Schmidt, Robert A Scott, Mitul Shah, Rossella Sorice, Melissa C Southey, Ulla Sovio, Meir Stampfer, Maristella Steri, Konstantin Strauch, Toshiko Tanaka, Emmi Tikkanen, Nicholas J Timpson, Michela Traglia, Thérèse Truong, Jonathan P Tyrer, André G Uitterlinden, Digna R Velez Edwards, Veronique Vitart, Uwe Völker, Peter Vollenweider, Qin Wang, Elisabeth Widen, Ko Willems van Dijk, Gonneke Willemsen, Robert Winqvist, Bruce H R Wolffenbuttel, Jing Hua Zhao, Magdalena Zoledziewska, Marek Zygmunt, Behrooz Z Alizadeh, Dorret I Boomsma, Marina Ciullo, Francesco Cucca, Tõnu Esko, Nora Franceschini, Christian Gieger, Vilmundur Gudnason, Caroline Hayward, Peter Kraft, Debbie A Lawlor, Patrik K E Magnusson, Nicholas G Martin, Dennis O Mook-Kanamori, Ellen A Nohr, Ozren Polasek, David Porteous, Alkes L Price, Paul M Ridker, Harold Snieder, Tim D Spector, Doris Stöckl, Daniela Toniolo, Sheila Ulivi, Jenny A Visser, Henry Völzke, Nicholas J Wareham, James F Wilson, Amanda B Spurdle, Unnur Thorsteindottir, Katherine S Pollard, Douglas F Easton, Joyce Y Tung, Jenny Chang-Claude, David Hinds, Anna Murray, Joanne M Murabito, Kari Stefansson, Ken K Ong, John R B Perry
The timing of puberty is a highly polygenic childhood trait that is epidemiologically associated with various adult diseases. Using 1000 Genomes Project-imputed genotype data in up to ∼370,000 women, we identify 389 independent signals (P < 5 × 10(-8)) for age at menarche, a milestone in female pubertal development. In Icelandic data, these signals explain ∼7.4% of the population variance in age at menarche, corresponding to ∼25% of the estimated heritability. We implicate ∼250 genes via coding variation or associated expression, demonstrating significant enrichment in neural tissues...
April 24, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28436979/successful-chimeric-ag-receptor-modified-t-cell-therapy-for-isolated-testicular-relapse-after-hematopoietic-cell-transplantation-in-an-acute-lymphoblastic-leukemia-patient
#12
J Yu, Y Hu, C Pu, Z Liang, Q Cui, H Zhang, Y Luo, J Shi, A Jin, L Xiao, Z Wu, H Huang
No abstract text is available yet for this article.
April 24, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28436973/a-review-of-hematopoietic-cell-transplantation-in-china-data-and-trends-during-2008-2016
#13
L-P Xu, D-P Wu, M-Z Han, H Huang, Q-F Liu, D-H Liu, Z-M Sun, L-H Xia, J Chen, H-X Wang, C Wang, C-F Li, Y-R Lai, J-M Wang, D-B Zhou, H Chen, Y-P Song, T Liu, K-Y Liu, X-J Huang
Hematopoietic cell transplantation (HCT) activity in China was surveyed to assess its current status. A record number of HCTs (21 884: 16 631 allogeneic (76%) and 5253 autologous (24%)) were reported by 76 centers in China between 1 January 2008 and 30 June 2016. HCT trends included continued growth in transplant activity, a continued rapid increase in haploidentical donors (HID), and slower growth for unrelated donors, matched-related donors (MRD) and cord blood transplantation (CBT). The proportion of HID HCT among allogeneic HCTs increased from 29...
April 24, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28436950/mre11-stability-is-regulated-by-ck2-dependent-interaction-with-r2tp-complex
#14
P von Morgen, K Burdova, T G Flower, N J O'Reilly, S J Boulton, S J Smerdon, L Macurek, Z Hořejší
The MRN (MRE11-RAD50-NBS1) complex is essential for repair of DNA double-strand breaks and stalled replication forks. Mutations of the MRN complex subunit MRE11 cause the hereditary cancer-susceptibility disease ataxia-telangiectasia-like disorder (ATLD). Here we show that MRE11 directly interacts with PIH1D1, a subunit of heat-shock protein 90 cochaperone R2TP complex, which is required for the assembly of large protein complexes, such as RNA polymerase II, small nucleolar ribonucleoproteins and mammalian target of rapamycin complex 1...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28436948/mitochondrial-elongation-mediated-glucose-metabolism-reprogramming-is-essential-for-tumour-cell-survival-during-energy-stress
#15
J Li, Q Huang, X Long, X Guo, X Sun, X Jin, Z Li, T Ren, P Yuan, X Huang, H Zhang, J Xing
To date, mechanisms of tumour cell survival under energy stress are not well understood. Cumulative evidence is beginning to reveal that specific mitochondrial morphologies are often associated with energetic states and survival of cells. However, the functional roles of mitochondria in the metabolic adaptation of tumour cells to energy stress remain to be elucidated. In this study, we first investigated the changes in mitochondrial morphology induced by nutrition deprivation in tumour cells, and the underlying molecular mechanism...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28436618/natural-history-of-aortic-root-dilation-through-young-adulthood-in-a-hypermobile-ehlers-danlos-syndrome-cohort
#16
Alyssa Ritter, Carrie Atzinger, Brandon Hays, Jeanne James, Amy Shikany, Derek Neilson, Lisa Martin, Kathryn Nicole Weaver
Hypermobile Ehlers-Danlos syndrome (hEDS) is a common inherited connective tissue disorder characterized by joint hypermobility. The natural history of aortic root dilation (AoD), a potential complication of EDS, has not been well characterized in this population. We describe the natural history of aortic root size in a large cohort of patients with hEDS. A cohort of 325 patients with HEDS was identified at Cincinnati Children's Hospital Medical Center (CCHMC), including 163 patients from a previous study. Medical records were reviewed and each participant's height, weight, and aortic dimensions from up to four echocardiograms were documented...
April 24, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28436603/parent-perception-of-the-impact-of-using-thickened-fluids-in-children-with-dysphagia
#17
Patricia Krummrich, Barbara Kline, Kate Krival, Michael Rubin
BACKGROUND: Oropharyngeal dysphagia occurs in children without known neurological disorders, increasing their risk for respiratory problems and inadequate intake. Clinicians may recommend thickening nutritive fluids; however, there is little research regarding the impact of thickening nutritive fluids on clinical outcomes in children. METHODS: We used a parental reporting tool to determine whether parents identified changes in signs of dysphagia or volume of intake when thickened fluids were incorporated into an individualized feeding program for dysphagic children without known neurological problems...
April 24, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28436602/accuracy-of-circulating-histones-in-predicting-persistent-organ-failure-and-mortality-in-patients-with-acute-pancreatitis
#18
T Liu, W Huang, P Szatmary, S T Abrams, Y Alhamdi, Z Lin, W Greenhalf, G Wang, R Sutton, C H Toh
BACKGROUND: Early prediction of acute pancreatitis severity remains a challenge. Circulating levels of histones are raised early in mouse models and correlate with disease severity. It was hypothesized that circulating histones predict persistent organ failure in patients with acute pancreatitis. METHODS: Consecutive patients with acute pancreatitis fulfilling inclusion criteria admitted to Royal Liverpool University Hospital were enrolled prospectively between June 2010 and March 2014...
April 24, 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28436510/unique-structural-properties-of-dna-interstrand-cross-links-formed-by-a-new-antitumor-dinuclear-pt-ii-complex
#19
O Hrabina, J Kasparkova, T Suchankova, V Novohradsky, Z Guo, Viktor Brabec
The DNA interstrand cross-links of the antitumor drug {[cis-Pt(NH3)2Cl]2(4,4'-methylenedianiline)}(2+) (1) play a prevalent role in its antitumor effects. Complex 1 forms DNA long-range interstrand cross-links uniquely in the 3'-3' direction. Conformational distortions induced by these interstrand cross-links in DNA represent a potential structural motif for recognition by high-mobility-group proteins.
April 24, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28436326/evaluation-and-characterization-of-nutritive-properties-of-the-jelly-ear-culinary-medicinal-mushroom-auricularia-auricula-judae-agaricomycetes-from-nigeria
#20
Reginald Chibueze Ohiri, Essien Eka Bassey
This study investigated the nutritive properties of the culinary-medicinal mushroom Auricularia auricula- judae. From the analysis, among the major minerals, potassium was found in the highest concentration, with a value of 172.03 ± 8.62 mg/kg, whereas manganese had the highest concentration among trace elements, with a value of 1.66 ± 0.11 mg/kg. Glutamic acid was the amino acid detected in the largest amounts in this study, with a value of 10.09 ± 1.86 mg/kg. Although glutamine and asparagine were not detected in this mushroom, cysteine and methionine had the lowest concentrations, with values of 0...
2017: International Journal of Medicinal Mushrooms
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