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https://www.readbyqxmd.com/read/27900430/visible-and-red-emissive-molecular-beacons-for-optical-temperature-measurements-and-quality-control-in-diagnostic-assays-utilizing-temperature-dependent-amplification-reactions
#1
Zerrin Fidan, Andy Wende, Ute Resch-Genger
Quality control requirements imposed on assays used in clinical diagnostics and point-of-care-diagnostic testing (POCT), utilizing amplification reactions performed at elevated temperatures of 35 to 95 °C are very stringent. As the temperature of a reaction vessel has a large impact on the specificity and sensitivity of the amplification reaction, simple tools for local in situ temperature sensing and monitoring are required for reaction and assay control. We describe here a platform of stem-and-loop structured DNA hairpins (molecular beacons, MBs), absorbing and emitting in the visible and red spectral region, rationally designed for precise temperature measurements in microfluidic assays for POCT, and their application for temperature measurements in a common DNA-based molecular biological assay utilizing thermophilic helicase-dependent amplification (tHDA)...
November 29, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27881593/dairy-food-intake-is-associated-with-reproductive-hormones-and-sporadic-anovulation-among-healthy-premenopausal-women
#2
Keewan Kim, Jean Wactawski-Wende, Kara A Michels, Torie C Plowden, Ellen N Chaljub, Lindsey A Sjaarda, Sunni L Mumford
BACKGROUND: Dairy food intake has been associated with infertility; however, little is known with regard to associations with reproductive hormones or anovulation. OBJECTIVE: We investigated whether intakes of dairy foods and specific nutrients were associated with reproductive hormone concentrations across the cycle and the risk of sporadic anovulation among healthy women. METHODS: We prospectively measured serum reproductive hormones ≤8 times/menstrual cycle for 2 cycles from 259 regularly menstruating women (mean age: 27...
November 23, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27879043/uncovering-key-structural-features-of-an-enantioselective-peptide-catalyzed-acylation-utilizing-advanced-nmr-techniques
#3
Eliška Procházková, Andreas Kolmer, Julian Ilgen, Mira Schwab, Lukas Kaltschnee, Maic Fredersdorf, Volker Schmidts, Raffael C Wende, Peter R Schreiner, Christina M Thiele
We report on a detailed NMR spectroscopic study of the catalyst-substrate interaction of a highly enantioselective oligopeptide catalyst that is used for the kinetic resolution of trans-cycloalkane-1,2-diols via monoacylation. The extraordinary selectivity has been rationalized by molecular dynamics as well as density functional theory (DFT) computations. Herein we describe the conformational analysis of the organocatalyst studied by a combination of nuclear Overhauser effect (NOE) and residual dipolar coupling (RDC)-based methods that resulted in an ensemble of four final conformers...
November 23, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27872138/micrornas-103-107-coordinately-regulate-macropinocytosis-and-autophagy
#4
Jong Kook Park, Han Peng, Julia Katsnelson, Wending Yang, Nihal Kaplan, Ying Dong, Joshua Z Rappoport, CongCong He, Robert M Lavker
Macropinocytosis, by which cells ingest large amounts of fluid, and autophagy, the lysosome-based catabolic process, involve vesicular biogenesis (early stage) and turnover (end stage). Much is known about early-stage events; however, our understanding of how the end stages of these processes are governed is incomplete. Here we demonstrate that the microRNA-103/107(miR-103/107) family, which is preferentially expressed in the stem cell-enriched limbal epithelium, coordinately regulates aspects of both these activities...
December 5, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27846573/a-pathogenic-role-for-t-cell-derived-il-22bp-in-inflammatory-bowel-disease
#5
Penelope Pelczar, Mario Witkowski, Laura Garcia Perez, Jan Kempski, Anna G Hammel, Leonie Brockmann, Dörte Kleinschmidt, Sandra Wende, Cathleen Haueis, Tanja Bedke, Marco Witkowski, Susanne Krasemann, Stefan Steurer, Carmen J Booth, Philipp Busch, Alexandra König, Ursula Rauch, Daniel Benten, Jakob R Izbicki, Thomas Rösch, Ansgar W Lohse, Till Strowig, Nicola Gagliani, Richard A Flavell, Samuel Huber
Intestinal inflammation can impair mucosal healing, thereby establishing a vicious cycle leading to chronic inflammatory bowel disease (IBD). However, the signaling networks driving chronic inflammation remain unclear. Here we report that CD4(+) T cells isolated from patients with IBD produce high levels of interleukin-22 binding protein (IL-22BP), the endogenous inhibitor of the tissue-protective cytokine IL-22. Using mouse models, we demonstrate that IBD development requires T cell-derived IL-22BP. Lastly, intestinal CD4(+) T cells isolated from IBD patients responsive to treatment with antibodies against tumor necrosis factor-α (anti-TNF-α), the most effective known IBD therapy, exhibited reduced amounts of IL-22BP expression but still expressed IL-22...
October 21, 2016: Science
https://www.readbyqxmd.com/read/27846053/inaccurate-self-report-of-height-and-its-impact-on-misclassification-of-body-mass-index-in-postmenopausal-women
#6
Xiaodan Mai, Jill N Sperrazza, Britt A Marshall, Kathleen M Hovey, Jean Wactawski-Wende
OBJECTIVE: Self-reported height is commonly used in population obesity research. Evidence has also shown a positive association between depression and obesity. We examined the extent of height misreporting and its impact on body mass index (BMI) calculations and classification, and explored whether depression is associated with height misreporting. METHODS: The Buffalo Osteoporosis and Periodontal Disease Follow-up Study enrolled 1,015 postmenopausal women between 2002 and 2006...
November 14, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27828315/wide-band-dispersionless-slow-light-in-hetero-mim-plasmonic-waveguide
#7
Dacheng Li, Kang Du, Shuhai Liang, Wending Zhang, Ting Mei
A flat slow-light band over a wide frequency range is obtained in the hetero-MIM (metal-insulator-metal) waveguide with zero group velocity dispersion (GVD). The zero GVD originates from dispersion compensation by the photonic mode and the plasmonic mode, the mechanism of which does not exist in the homo-MIM structure. By changing dielectric permittivity of the insulator or the difference of two different metallic plasma frequencies, the group index and the bandwidth can be tuned. The dispersionless slow light characteristic in the hetero-MIM waveguide may be useful in the new design of plasmonic devices...
October 3, 2016: Optics Express
https://www.readbyqxmd.com/read/27825105/mir-184-exhibits-angiostatic-properties-via-regulation-of-akt-and-vegf-signaling-pathways
#8
Jong Kook Park, Han Peng, Wending Yang, Julia Katsnelson, Olga Volpert, Robert M Lavker
Corneal avascularity is critical for achieving transparency necessary for proper transmission of light to the lens and visual acuity. Although much is known about angiogenesis and angiostasis, the precise regulation of these processes in the cornea is unclear. MicroRNA (miR)-184, the most abundant corneal epithelial miRNA, has been suggested to function in corneal angiostasis by altering VEGF signaling; however, the mechanism(s) underlying this regulation have not been addressed. Using a combination of in vitro and in vivo assays to evaluate angiogenesis, we demonstrated that human limbal epithelial keratinocytes (HLEKs) engineered to overexpress miR-184 secreted lower amounts of angiogenic mitogens...
October 7, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27821202/food-composition-tables-in-resource-poor-settings-exploring-current-limitations-and-opportunities-with-a-focus-on-animal-source-foods-in-sub-saharan-africa
#9
Julia de Bruyn, Elaine Ferguson, Margaret Allman-Farinelli, Ian Darnton-Hill, Wende Maulaga, John Msuya, Robyn Alders
Animal-source foods (ASF) have the potential to enhance the nutritional adequacy of cereal-based diets in low- and middle-income countries, through the provision of high-quality protein and bioavailable micronutrients. The development of guidelines for including ASF in local diets requires an understanding of the nutrient content of available resources. This article reviews food composition tables (FCT) used in sub-Saharan Africa, examining the spectrum of ASF reported and exploring data sources for each reference...
November 8, 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27820659/no-increase-in-fractures-after-stopping-hormone-therapy-results-from-the-women-s-health-initiative
#10
Nelson B Watts, Jane A Cauley, Rebecca D Jackson, Andrea Z LaCroix, Cora E Lewis, JoAnn E Manson, Joan Neuner, Lawrence S Phillips, Marcia L Stefanick, Jean Wactawski-Wende, Carolyn Crandall
CONTEXT: The Women's Health Initiative (WHI) hormone therapy (HT) trials showed protection against hip and total fractures but a later observational report suggested loss of benefit and a rebound increased risk after stopping. OBJECTIVE: To examine fractures after discontinuation of HT Design and Setting: Two placebo-controlled randomized trials Patients: 15,187 WHI participants who continued active HT or placebo through the intervention period and did not take HT in the post-intervention period Interventions: Conjugated equine estrogen + medroxyprogesterone acetate (CEE+MPA) in naturally menopausal women and conjugated equine estrogen (CEE) alone in women with prior hysterectomy Main Outcome Measures: Total and hip fractures through 5 years after discontinuation Results: Hip fractures were infrequent (∼2...
November 7, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27805691/high-order-optical-vortex-generation-in-a-few-mode-fiber-via-cascaded-acoustically-driven-vector-mode-conversion
#11
Wending Zhang, Ligang Huang, Keyan Wei, Peng Li, Biqiang Jiang, Dong Mao, Feng Gao, Ting Mei, Guoquan Zhang, Jianlin Zhao
We propose a method to generate the high-order optical vortex in a few-mode fiber via cascaded acoustically driven vector mode conversion. Theoretical analysis showed that the vector mode conversion induced by the acoustically induced fiber grating (AIFG) could occur between two HE modes with adjacent azimuthal numbers. In the experiment conducted at 532 nm, two AIFGs were simultaneously induced in the same segment of the fiber by a radio frequency source containing two different frequency components. One AIFG was used to convert the left- and right-handed circular polarization fundamental modes to the ±1-order vortex modes, which were then further converted to the ±2-order vortex modes by the other AIFG...
November 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27795732/association-between-parity-and-obesity-patterns-in-a-middle-aged-and-older-chinese-population-a-cross-sectional-analysis-in-the-tongji-dongfeng-cohort-study
#12
Wending Li, Yi Wang, Lijun Shen, Lulu Song, Hui Li, Bingqing Liu, Jing Yuan, Youjie Wang
BACKGROUND: Higher parity has been implicated as a risk factor for obesity of women. The objective of the study was to examine whether parity was associated with general obesity or abdominal obesity, or both, among middle-aged and older Chinese women. METHODS: A total of 12,829 Chinese women (mean age: 64.8 years) with at least one live birth were selected from the Dongfeng-Tongji Cohort Study (phase II). We used body mass index to assess general obesity, and waist-to-hip ratio (WHR), waist-to-height ratio (WHtR) and waist circumference (WC) to assess abdominal obesity...
2016: Nutrition & Metabolism
https://www.readbyqxmd.com/read/27775176/the-impact-of-stroke-nurse-navigation-on-patient-compliance-post-discharge
#13
Tonya Deen, Theresa Terna, Elizabeth Kim, Brian Leahy, Wende Fedder
PURPOSE: The purpose of this study was to describe the impact a Stroke Nurse Navigation Program has on concurrent chart reviews and patient compliance post discharge. DESIGN: Phase I: Concurrent chart review of The Joint Commission Primary Stroke Center core measures for ischemic stroke patients. Phase II: Longitudinal study of 100 ischemic stroke patients discharged to home. METHODS: Telephone surveys were conducted at prescribed intervals posthospital discharge (Phase II)...
October 24, 2016: Rehabilitation Nursing: the Official Journal of the Association of Rehabilitation Nurses
https://www.readbyqxmd.com/read/27754808/low-dose-aspirin-and-sporadic-anovulation-in-the-eager-randomized-trial
#14
Rose G Radin, Lindsey A Sjaarda, Neil J Perkins, Robert M Silver, Zhen Chen, Laurie L Lesher, Noya Galai, Jean Wactawski-Wende, Sunni L Mumford, Enrique F Schisterman
CONTEXT: Among women with a single, recent pregnancy loss, daily preconception low-dose aspirin (LDA) increased the live birth rate with no effect on pregnancy loss. The mechanism underlying this effect is unclear, but it may work through ovulation. OBJECTIVE: We estimated the effect of LDA on the per-cycle risk of anovulation among eumenorrheic women. DESIGN: The Effects of Aspirin in Gestation and Reproduction trial, a multi-center, randomized, double-blind, placebo-controlled trial of daily LDA on reproductive outcomes...
October 18, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27748744/metabolic-phenotypes-of-obesity-frequency-correlates-and-change-over-time-in-a-cohort-of-postmenopausal-women
#15
G C Kabat, Wy-Y Wu, J W Bea, C Chen, L Qi, M L Stefanick, R T Chlebowski, D S Lane, J Wactawski-Wende, S Wassertheil-Smoller, T E Rohan
OBJECTIVE: The possibility that a subset of persons who are obese may be metabolically healthy-referred to as the 'metabolically healthy obese' (MHO) phenotype -- has attracted attention recently. However, few studies have followed individuals with MHO or other obesity phenotypes over time to assess change in their metabolic profiles. The aim of the present study was to examine transitions over a 6-year period among different states defined simultaneously by body mass index and presence/absence of the metabolic syndrome...
October 17, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27742674/body-mass-index-waist-circumference-diabetes-and-risk-of-liver-cancer-for-u-s-adults
#16
Peter T Campbell, Christina C Newton, Neal D Freedman, Jill Koshiol, Michael C Alavanja, Laura E Beane Freeman, Julie E Buring, Andrew T Chan, Dawn Q Chong, Mridul Datta, Mia M Gaudet, J Michael Gaziano, Edward L Giovannucci, Barry I Graubard, Albert R Hollenbeck, Lindsey King, I-Min Lee, Martha S Linet, Julie R Palmer, Jessica L Petrick, Jenny N Poynter, Mark P Purdue, Kim Robien, Lynn Rosenberg, Vikrant V Sahasrabuddhe, Catherine Schairer, Howard D Sesso, Alice J Sigurdson, Victoria L Stevens, Jean Wactawski-Wende, Anne Zeleniuch-Jacquotte, Andrew G Renehan, Katherine A McGlynn
Incidence rates for liver cancer have increased 3-fold since the mid-1970s in the United States in parallel with increasing trends for obesity and type II diabetes mellitus. We conducted an analysis of baseline body mass index (BMI), waist circumference (WC), and type II diabetes mellitus with risk of liver cancer. The Liver Cancer Pooling Project maintains harmonized data from 1.57 million adults enrolled in 14 U.S.-based prospective studies. Cox regression estimated HRs and 95% confidence intervals (CI) adjusted for age, sex, study center, alcohol, smoking, race, and BMI (for WC and type II diabetes mellitus)...
October 15, 2016: Cancer Research
https://www.readbyqxmd.com/read/27739181/position-statement-of-the-israeli-society-for-musculoskeletal-medicine-on-intramuscular-stimulation-for-myofascial-pain-syndrome-a-delphi-process
#17
Motti Ratmansky, Amir Minerbi, Leonid Kalichman, John Kent, Osnat Wende, Aharon S Finestone, Simon Vulfsons
OBJECTIVE: To develop consensus on a position paper on the use of intramuscular stimulation (IMS) for the treatment of myofascial pain syndrome (MPS) by physicians in Israel. METHODS: The Israeli Society of Musculoskeletal Medicine ran a modified Delphi process to gather opinions from a multidisciplinary expert panel. Eight experts in the treatment of MPS were chosen and asked to participate, and six participated. The position paper was iterated three times. RESULTS: After three iterations, general consensus was reached by all six experts...
October 14, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27726335/relay-like-exchange-mechanism-through-a-spin-radical-between-tbpc2-molecules-and-graphene-ni-111-substrates
#18
Simone Marocchi, Andrea Candini, David Klar, Willem Van den Heuvel, Haibei Huang, Filippo Troiani, Valdis Corradini, Roberto Biagi, Valentina De Renzi, Svetlana Klyatskaya, Kurt Kummer, Nicholas B Brookes, Mario Ruben, Heiko Wende, Umberto Del Pennino, Alessandro Soncini, Marco Affronte, Valerio Bellini
We investigate the electronic and magnetic properties of \ce{TbPc2} single ion magnets adsorbed on a graphene/Ni(111) substrate, by density-functional theory (DFT), ab-initio complete active space self-consistent field calculations, and x-ray magnetic circular dichroism (XMCD) experiments. Despite the presence of the graphene decoupling layer a sizable antiferromagnetic coupling between Tb and Ni is observed in the XMCD experiments. The molecule-surface interaction is rationalized by the DFT analysis and is found to follow a relay-like communication pathway, where the radical spin on the organic Pc ligands mediates the interaction between Tb ion and Ni substrate spins...
October 11, 2016: ACS Nano
https://www.readbyqxmd.com/read/27623223/in%C3%A2-vivo-genome-editing-as-a-potential-treatment-strategy-for-inherited-retinal-dystrophies
#19
Mert Yanik, Brigitte Müller, Fei Song, Jacqueline Gall, Franziska Wagner, Wolfgang Wende, Birgit Lorenz, Knut Stieger
In vivo genome editing represents an emerging field in the treatment of monogenic disorders, as it may constitute a solution to the current hurdles in classic gene addition therapy, which are the low levels and limited duration of transgene expression. Following the introduction of a double strand break (DSB) at the mutational site by highly specific endonucleases, such as TALENs (transcription activator like effector nucleases) or RNA based nucleases (clustered regulatory interspaced short palindromic repeats - CRISPR-Cas), the cell's own DNA repair machinery restores integrity to the DNA strand and corrects the mutant sequence, thus allowing the cell to produce protein levels as needed...
September 10, 2016: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/27579533/three-new-pancreatic-cancer-susceptibility-signals-identified-on-chromosomes-1q32-1-5p15-33-and-8q24-21
#20
Mingfeng Zhang, Zhaoming Wang, Ofure Obazee, Jinping Jia, Erica J Childs, Jason Hoskins, Gisella Figlioli, Evelina Mocci, Irene Collins, Charles C Chung, Christopher Hautman, Alan A Arslan, Laura Beane-Freeman, Paige M Bracci, Julie Buring, Eric J Duell, Steven Gallinger, Graham G Giles, Gary E Goodman, Phyllis J Goodman, Aruna Kamineni, Laurence N Kolonel, Matthew H Kulke, Núria Malats, Sara H Olson, Howard D Sesso, Kala Visvanathan, Emily White, Wei Zheng, Christian C Abnet, Demetrius Albanes, Gabriella Andreotti, Lauren Brais, H Bas Bueno-de-Mesquita, Daniela Basso, Sonja I Berndt, Marie-Christine Boutron-Ruault, Maarten F Bijlsma, Hermann Brenner, Laurie Burdette, Daniele Campa, Neil E Caporaso, Gabriele Capurso, Giulia Martina Cavestro, Michelle Cotterchio, Eithne Costello, Joanne Elena, Ugo Boggi, J Michael Gaziano, Maria Gazouli, Edward L Giovannucci, Michael Goggins, Myron Gross, Christopher A Haiman, Manal Hassan, Kathy J Helzlsouer, Nan Hu, David J Hunter, Elzbieta Iskierka-Jazdzewska, Mazda Jenab, Rudolf Kaaks, Timothy J Key, Kay-Tee Khaw, Eric A Klein, Manolis Kogevinas, Vittorio Krogh, Juozas Kupcinskas, Robert C Kurtz, Maria T Landi, Stefano Landi, Loic Le Marchand, Andrea Mambrini, Satu Mannisto, Roger L Milne, Rachel E Neale, Ann L Oberg, Salvatore Panico, Alpa V Patel, Petra H M Peeters, Ulrike Peters, Raffaele Pezzilli, Miquel Porta, Mark Purdue, J Ramón Quiros, Elio Riboli, Nathaniel Rothman, Aldo Scarpa, Ghislaine Scelo, Xiao-Ou Shu, Debra T Silverman, Pavel Soucek, Oliver Strobel, Malin Sund, Ewa Małecka-Panas, Philip R Taylor, Francesca Tavano, Ruth C Travis, Mark Thornquist, Anne Tjønneland, Geoffrey S Tobias, Dimitrios Trichopoulos, Yogesh Vashist, Pavel Vodicka, Jean Wactawski-Wende, Nicolas Wentzensen, Herbert Yu, Kai Yu, Anne Zeleniuch-Jacquotte, Charles Kooperberg, Harvey A Risch, Eric J Jacobs, Donghui Li, Charles Fuchs, Robert Hoover, Patricia Hartge, Stephen J Chanock, Gloria M Petersen, Rachael S Stolzenberg-Solomon, Brian M Wolpin, Peter Kraft, Alison P Klein, Federico Canzian, Laufey T Amundadottir
Genome-wide association studies (GWAS) have identified common pancreatic cancer susceptibility variants at 13 chromosomal loci in individuals of European descent. To identify new susceptibility variants, we performed imputation based on 1000 Genomes (1000G) Project data and association analysis using 5,107 case and 8,845 control subjects from 27 cohort and case-control studies that participated in the PanScan I-III GWAS. This analysis, in combination with a two-staged replication in an additional 6,076 case and 7,555 control subjects from the PANcreatic Disease ReseArch (PANDoRA) and Pancreatic Cancer Case-Control (PanC4) Consortia uncovered 3 new pancreatic cancer risk signals marked by single nucleotide polymorphisms (SNPs) rs2816938 at chromosome 1q32...
August 1, 2016: Oncotarget
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