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https://www.readbyqxmd.com/read/28454168/laser-waveform-control-of-extreme-ultraviolet-high-harmonics-from-solids
#1
Yong Sing You, Mengxi Wu, Yanchun Yin, Andrew Chew, Xiaoming Ren, Shima Gholam-Mirzaei, Dana A Browne, Michael Chini, Zenghu Chang, Kenneth J Schafer, Mette B Gaarde, Shambhu Ghimire
Solid-state high-harmonic sources offer the possibility of compact, high-repetition-rate attosecond light emitters. However, the time structure of high harmonics must be characterized at the sub-cycle level. We use strong two-cycle laser pulses to directly control the time-dependent nonlinear current in single-crystal MgO, leading to the generation of extreme ultraviolet harmonics. We find that harmonics are delayed with respect to each other, yielding an atto-chirp, the value of which depends on the laser field strength...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454097/upregulation-of-calprotectin-in-mild-ige-mediated-ovalbumin-hypersensitivity
#2
Qingling Zhu, Feng Li, Junli Wang, Jingqiu Ma, Xiaoyang Sheng
Calprotectin, also known as S100A8/A9, has been linked to gut inflammation caused by IgE-mediated food hypersensitivities, but the pathophysiologic abnormalities it causes remain to be determined. We created a mild food hypersensitivity model through oral gavage of ovalbumin in Norway brown rats without using immune adjuvant. Changes in the levels of calprotectin and inflammation-associated cytokines were then observed over time. We found that fecal calprotectin as well as jejunal and liver TLR4, TNF-α, NF-κB, IL-1β, and IL-6 were upregulated in hypersensitive rats...
April 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28453881/effect-of-an-acute-exercise-bout-on-immediate-post-exercise-irisin-concentration-in-adults-a-meta-analysis
#3
REVIEW
Jill Fox, Brittany V Rioux, Eric D B Goulet, Neil M Johanssen, Damon L Swift, Danielle R Bouchard, Hal Loewen, Martin Sénéchal
BACKGROUND: Irisin is a recently discovered myokine that increases adipocyte metabolism, induces further "browning" of white adipose tissue, and enhance glucose metabolism. No study has ever determined how an acute bout of exercise impacts immediate post-exercise irisin concentration using a meta-analytic approach. OBJECTIVE: To determine the impact of an acute bout of exercise on the magnitude of post-exercise irisin concentration in adults using meta-analytic procedures...
April 28, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28453575/genome-wide-association-study-of-red-blood-cell-traits-in-hispanics-latinos-the-hispanic-community-health-study-study-of-latinos
#4
Chani J Hodonsky, Deepti Jain, Ursula M Schick, Jean V Morrison, Lisa Brown, Caitlin P McHugh, Claudia Schurmann, Diane D Chen, Yong Mei Liu, Paul L Auer, Cecilia A Laurie, Kent D Taylor, Brian L Browning, Yun Li, George Papanicolaou, Jerome I Rotter, Ryo Kurita, Yukio Nakamura, Sharon R Browning, Ruth J F Loos, Kari E North, Cathy C Laurie, Timothy A Thornton, Nathan Pankratz, Daniel E Bauer, Tamar Sofer, Alex P Reiner
Prior GWAS have identified loci associated with red blood cell (RBC) traits in populations of European, African, and Asian ancestry. These studies have not included individuals with an Amerindian ancestral background, such as Hispanics/Latinos, nor evaluated the full spectrum of genomic variation beyond single nucleotide variants. Using a custom genotyping array enriched for Amerindian ancestral content and 1000 Genomes imputation, we performed GWAS in 12,502 participants of Hispanic Community Health Study and Study of Latinos (HCHS/SOL) for hematocrit, hemoglobin, RBC count, RBC distribution width (RDW), and RBC indices...
April 28, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28453524/peripheral-huntingtin-silencing-does-not-ameliorate-central-signs-of-disease-in-the-b6-httq111-mouse-model-of-huntington-s-disease
#5
Sydney R Coffey, Robert M Bragg, Shawn Minnig, Seth A Ament, Jeffrey P Cantle, Anne Glickenhaus, Daniel Shelnut, José M Carrillo, Dominic D Shuttleworth, Julie-Anne Rodier, Kimihiro Noguchi, C Frank Bennett, Nathan D Price, Holly B Kordasiewicz, Jeffrey B Carroll
Huntington's disease (HD) is an autosomal dominant neurodegenerative disease whose predominant neuropathological signature is the selective loss of medium spiny neurons in the striatum. Despite this selective neuropathology, the mutant protein (huntingtin) is found in virtually every cell so far studied, and, consequently, phenotypes are observed in a wide range of organ systems both inside and outside the central nervous system. We, and others, have suggested that peripheral dysfunction could contribute to the rate of progression of striatal phenotypes of HD...
2017: PloS One
https://www.readbyqxmd.com/read/28453521/soy-moratorium-impacts-on-soybean-and-deforestation-dynamics-in-mato-grosso-brazil
#6
Jude H Kastens, J Christopher Brown, Alexandre Camargo Coutinho, Christopher R Bishop, Júlio César D M Esquerdo
Previous research has established the usefulness of remotely sensed vegetation index (VI) data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to characterize the spatial dynamics of agriculture in the state of Mato Grosso (MT), Brazil. With these data it has become possible to track MT agriculture, which accounts for ~85% of Brazilian Amazon soy production, across periods of several years. Annual land cover (LC) maps support investigation of the spatiotemporal dynamics of agriculture as they relate to forest cover and governance and policy efforts to lower deforestation rates...
2017: PloS One
https://www.readbyqxmd.com/read/28453409/it-s-time-for-ems-to-administer-ketamine-analgesia
#7
Robert Cousins, Dustin Anderson, Frank Dehnisch, Andrew Brown, Sean McKay, Erik S Glassman
No abstract text is available yet for this article.
May 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28453382/flow-cytometric-single-cell-analysis-reveals-heterogeneity-between-adipose-depots
#8
Badwi B Boumelhem, Stephen J Assinder, Kim S Bell-Anderson, Stuart T Fraser
Understanding adipose tissue heterogeneity is hindered by the paucity of methods to analyze mature adipocytes at the single cell level. Here, we report a system for analyzing live adipocytes from different adipose depots in the adult mouse. Single cell suspensions of buoyant adipocytes were separated from the stromal vascular fraction and analyzed by flow cytometry. Compared to other lipophilic dyes, Nile Red uptake effectively distinguished adipocyte populations. Nile Red fluorescence increased with adipocyte size and granularity and could be combined with MitoTracker® Deep Red or fluorescent antibody labeling to further dissect adipose populations...
April 14, 2017: Adipocyte
https://www.readbyqxmd.com/read/28453364/quantification-of-ucp1-function-in-human-brown-adipose-tissue
#9
Craig Porter
Brown adipose tissue (BAT) mitochondria are distinct from their counterparts in other tissues in that ATP production is not their primary physiologic role. BAT mitochondria are equipped with a specialized protein known as uncoupling protein 1 (UCP1). UCP1 short-circuits the electron transport chain, allowing mitochondrial membrane potential to be transduced to heat, making BAT a tissue capable of altering energy expenditure and fuel metabolism in mammals without increasing physical activity. The recent discovery that adult humans have metabolically active BAT has rekindled an interest in this intriguing tissue, with the overarching aim of manipulating BAT function to augment energy expenditure as a countermeasure for obesity and the metabolic abnormalities it incurs...
April 14, 2017: Adipocyte
https://www.readbyqxmd.com/read/28449304/a-case-of-familial-transmission-of-the-newly-described-dnmt3a-overgrowth-syndrome
#10
Gabrielle Lemire, Julie Gauthier, Jean-François Soucy, Marie-Ange Delrue
DNMT3A-Overgrowth Syndrome (also known as Tatton-Brown-Rahman Syndrome) (MIM 615879) has recently been described in 13 individuals with de novo heterozygous mutations in DNMT3A gene. This autosomal dominant condition is characterized by overgrowth, dysmorphic facial features and moderate intellectual disability. Missense and truncating point mutations, a small in-frame deletion, as well as microdeletion 2p23 have been reported. Moreover, DNMT3A is commonly somatically mutated in acute myeloid leukemia. We herein report a family with two siblings and their father affected by the syndrome...
April 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28449262/predictive-mechanisms-linking-brain-opioids-to-chronic-pain-vulnerability-and-resilience
#11
REVIEW
Anthony Kenneth Peter Jones, Christopher Andrew Brown
Chronic pain is a major global healthcare problem that is currently inadequately treated. In addition, the current use of opioids for treatment has reached far beyond the paucity of evidence for long-term benefits relative to risks. Benefit-risk models for opioid and non-opioid treatments would benefit from a rational, mechanism-based understanding of neuroplastic and neurochemical contributions to chronic pain. Here we evaluate the findings and limitations of representative research investigating brain neuroplasticity and neurochemistry in chronic pain...
April 27, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28449223/the-impact-of-a-sibling-s-life-limiting-genetic-condition-on-adult-brothers-and-sisters
#12
Erica Brown, Jane Coad, Anita Franklin
It is estimated that rare diseases affect the lives of over three million people in the United Kingdom. Of these, a significant proportion are children and young people with genetic life-limiting or life-shortening conditions. This study used a qualitative approach with in-depth semi-structured interviews to explore the experiences of 10 adult siblings of a baby diagnosed with Trisomy 13 (Patau syndrome) or Trisomy 18 (Edward syndrome). Findings illustrate that parental grief from the time of their child's diagnosis onward is also experienced by siblings...
April 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28449110/veqtl-mapper-variance-association-mapping-for-molecular-phenotypes
#13
Andrew Anand Brown
Motivation: Genetic loci associated with the variance of phenotypic traits have been of recent interest as they can be signatures of genetic interactions, gene by environment interactions, parent of origin effects and canalisation. We present a fast efficient tool to map loci affecting variance of gene expression and other molecular phenotypes in cis. Results: Applied to the publicly available Geuvadis gene expression dataset, we identify 816 loci associated with variance of gene expression using an additive model, and 32 showing differences in variance between homozygous and heterozygous alleles, signatures of parent of origin effects...
April 25, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28449006/a-meta-analysis-comparing-the-risk-of-metastases-in-patients-with-rectal-cancer-and-mri-detected-extramural-vascular-invasion-mremvi-vs-mremvi-negative-cases
#14
Muhammed R S Siddiqui, Constantinos Simillis, Chris Hunter, Manish Chand, Jemma Bhoday, Aurelie Garant, Te Vuong, Giovanni Artho, Shahnawaz Rasheed, Paris Tekkis, Al-Mutaz Abulafi, Gina Brown
BACKGROUND: Pathological extramural vascular invasion (EMVI) is an independent prognostic factor in rectal cancer, but can also be identified on MRI-detected extramural vascular invasion (mrEMVI). We perform a meta-analysis to determine the risk of metastatic disease at presentation and after surgery in mrEMVI-positive patients compared with negative tumours. METHODS: Electronic databases were searched from January 1980 to March 2016. Conventional meta-analytical techniques were used to provide a summative outcome...
April 27, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28448947/traveling-from-the-hypothalamus-to-the-adipose-tissue-the-thermogenic-pathway
#15
REVIEW
Cristina Contreras, Rubén Nogueiras, Carlos Diéguez, Kamal Rahmouni, Miguel López
Brown adipose tissue (BAT) is a specialized tissue critical for non-shivering thermogenesis producing heat through mitochondrial uncoupling; whereas white adipose tissue (WAT) is responsible of energy storage in the form of triglycerides. Another type of fat has been described, the beige adipose tissue; this tissue emerges in existing WAT depots but with thermogenic ability, a phenomenon known as browning. Several peripheral signals relaying information about energy status act in the brain, particularly the hypothalamus, to regulate thermogenesis in BAT and browning of WAT...
April 15, 2017: Redox Biology
https://www.readbyqxmd.com/read/28448808/identifying-conflict-potential-in-a-coastal-and-marine-environment-using-participatory-mapping
#16
Susan A Moore, Greg Brown, Halina Kobryn, Jennifer Strickland-Munro
Planning for coastal and marine environments is often characterized by conflict over current and proposed uses. Marine spatial planning has been proposed as a way forward, however, social data are often missing impeding decision-making. Participatory mapping, a technique useful for providing social data and predict conflict potential, is being used in an increasing number of terrestrial applications to inform planning, but has been little used in the marine realm. This study collected social data for an extensive coastline in northwestern Australia via 167 in-depth face-to-face interviews including participant mapping of place values...
April 24, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28448580/sildenafil-normalizes-bowel-transit-in-preclinical-models-of-constipation
#17
Sarah K Sharman, Bianca N Islam, Yali Hou, Margaux Usry, Allison Bridges, Nagendra Singh, Subbaramiah Sridhar, Satish Rao, Darren D Browning
Guanylyl cyclase-C (GC-C) agonists increase cGMP levels in the intestinal epithelium to promote secretion. This process underlies the utility of exogenous GC-C agonists such as linaclotide for the treatment of chronic idiopathic constipation (CIC) and irritable bowel syndrome with constipation (IBS-C). Because GC-C agonists have limited use in pediatric patients, there is a need for alternative cGMP-elevating agents that are effective in the intestine. The present study aimed to determine whether the PDE-5 inhibitor sildenafil has similar effects as linaclotide on preclinical models of constipation...
2017: PloS One
https://www.readbyqxmd.com/read/28448273/magnetic-induction-spectroscopy-mis-probe-design-for-cervical-tissue-measurements
#18
Jau-Yi Wang, Timothy Healey, Anthony Barker, Brian Brown, Chris Monk, Dilly Anumba
OBJECTIVE: Gradiometers have the advantage of increasing measuring sensitivity, which is particularly useful in magnetic induction spectroscopy (MIS) for bio-impedance measurements. Traditional gradiometers use a pair of field sensing coils equally distant and on opposite sides of a drive coil, which provides high immunity to interference. In this paper, a ferrite-cored coaxial gradiometer probe of 29 mm diameter has been developed for measuring the impedance spectra of cervical tissues in vivo...
April 27, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28448250/recruiting-community-partners-for-veggie-van-strategies-and-lessons-learned-from-a-mobile-market-intervention-in-north-carolina-2012-2015
#19
Gina L Tripicchio, Jacqueline Grady Smith, Janelle Armstrong-Brown, Jared McGuirt, Lindsey Haynes-Maslow, Sarah Mardovich, Alice S Ammerman, Lucia Leone
BACKGROUND: Food access interventions are promising strategies for improving dietary intake, which is associated with better health. However, studies examining the relationship between food access and intake are limited to observational designs, indicating a need for more rigorous approaches. The Veggie Van (VV) program was a cluster-randomized intervention designed to address the gap between food access and intake. In this article, we aim to describe the approaches involved in recruiting community partners to participate in VV...
April 27, 2017: Preventing Chronic Disease
https://www.readbyqxmd.com/read/28448167/standardized-error-severity-score-ess-ratings-to-quantify-risk-associated-with-child-restraint-system-crs-and-booster-seat-misuse
#20
Christina M Rudin-Brown, Chelsea Kramer, Robin Langerak, Andrea Scipione, Shelley Kelsey
OBJECTIVE: Although numerous research studies have reported high levels of error and misuse of child restraint systems (CRS) and booster seats in experimental and real world scenarios, conclusions are limited because they provide little information regarding which installation issues pose the highest risk and thus should be targeted for change. Beneficial to legislating bodies and researchers alike would be a standardized, globally relevant, assessment of the potential injury risk associated with more common forms of CRS and booster seat misuse, which could be applied with observed error frequency, for example, in car seat clinics or during prototype user testing, to better identify and characterize the installation issues of greatest risk to safety...
April 27, 2017: Traffic Injury Prevention
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