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https://www.readbyqxmd.com/read/28426779/reference-standards-for-lean-mass-measures-using-ge-dual-energy-x-ray-absorptiometry-in-caucasian-adults
#1
Mary T Imboden, Ann M Swartz, Holmes W Finch, Matthew P Harber, Leonard A Kaminsky
OBJECTIVE: To develop reference values by age and sex for LM measures using GE-Healthcare DXA systems. METHODS: A de-identified sample was obtained from Ball State University's Clinical Exercise Physiology Laboratory and University of Wisconsin-Milwaukee's Physical Activity & Health Research Laboratory. DXA scans of 2,076 women and 1,251 men were completed using a GE Lunar Prodigy or iDXA. Percentiles (%ile) were calculated for all variables of interest (LM, LMI, %LM, and ALMI) and a factorial ANOVA was used to assess differences for each variable between 10-year age groups and sex, as well as the interaction between age and sex...
2017: PloS One
https://www.readbyqxmd.com/read/28418218/regulation-of-salt-marsh-mosquito-populations-by-the-18-6-year-lunar-nodal-cycle
#2
Ilia Rochlin, James T Morris
The 18.6-year lunar-nodal cycle drives changes in tidal amplitude globally, affecting coastal habitat formation, species and communities inhabiting rocky shores, and salt marsh vegetation. However, the cycle's influence on salt marsh fauna lacked sufficient long-term data for testing its effect. We circumvented this problem by using salt marsh mosquito records obtained over a period of over four decades in two estuaries in the northeastern USA. Salt marsh mosquito habitat is near the highest tide level where the impact of the nodal cycle on flood frequency is greatest...
April 18, 2017: Ecology
https://www.readbyqxmd.com/read/28418034/light-and-circadian-controlled-genes-respond-to-a-broad-light-spectrum-in-puffer-fish-derived-fugu-eye-cells
#3
Keiko Okano, Shoichi Ozawa, Hayao Sato, Sawa Kodachi, Masaharu Ito, Toshiaki Miyadai, Akihiro Takemura, Toshiyuki Okano
Some cell lines retain intrinsic phototransduction pathways to control the expression of light-regulated genes such as the circadian clock gene. Here we investigated the photosensitivity of a Fugu eye, a cell line established from the eye of Takifugu rubripes, to examine whether such a photosensitive nature is present. Microarray analysis identified 15 genes that showed blue light-dependent change at the transcript level. We investigated temporal profiles of the light-induced genes, as well as Cry and Per, under light-dark, constant light (LL), and constant dark (DD) conditions by quantitative RT-PCR...
April 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417839/mortality-due-to-cardiovascular-disease-among-apollo-lunar-astronauts
#4
Robert J Reynolds, Steven M Day
INTRODUCTION: Recent research has postulated increased cardiovascular mortality for astronauts who participated in the Apollo lunar missions. The conclusions, however, are based on small numbers of astronauts, are derived from methods with known weaknesses, and are not consistent with prior research. METHODS: Records for NASA astronauts and U.S. Air Force astronauts were analyzed to produce standardized mortality ratios. Lunar astronauts were compared to astronauts who have never flown in space (nonflight astronauts), those who have only flown missions in low Earth orbit (LEO astronauts), and the U...
May 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28416795/neutrophil-stunning-by-metoprolol-reduces-infarct-size
#5
Jaime García-Prieto, Rocío Villena-Gutiérrez, Mónica Gómez, Esther Bernardo, Andrés Pun-García, Inés García-Lunar, Georgiana Crainiciuc, Rodrigo Fernández-Jiménez, Vinatha Sreeramkumar, Rafael Bourio-Martínez, José M García-Ruiz, Alfonso Serrano Del Valle, David Sanz-Rosa, Gonzalo Pizarro, Antonio Fernández-Ortiz, Andrés Hidalgo, Valentín Fuster, Borja Ibanez
The β1-adrenergic-receptor (ADRB1) antagonist metoprolol reduces infarct size in acute myocardial infarction (AMI) patients. The prevailing view has been that metoprolol acts mainly on cardiomyocytes. Here, we demonstrate that metoprolol reduces reperfusion injury by targeting the haematopoietic compartment. Metoprolol inhibits neutrophil migration in an ADRB1-dependent manner. Metoprolol acts during early phases of neutrophil recruitment by impairing structural and functional rearrangements needed for productive engagement of circulating platelets, resulting in erratic intravascular dynamics and blunted inflammation...
April 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28416727/remotely-distinguishing-and-mapping-endogenic-water-on-the-moon
#6
Rachel L Klima, Noah E Petro
Water and/or hydroxyl detected remotely on the lunar surface originates from several sources: (i) comets and other exogenous debris; (ii) solar-wind implantation; (iii) the lunar interior. While each of these sources is interesting in its own right, distinguishing among them is critical for testing hypotheses for the origin and evolution of the Moon and our Solar System. Existing spacecraft observations are not of high enough spectral resolution to uniquely characterize the bonding energies of the hydroxyl molecules that have been detected...
May 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28409386/nocturnal-oviposition-behavior-of-blowflies-diptera-calliphoridae-in-the-southern-hemisphere-south-africa-and-australia-and-its-forensic-implications
#7
Kirstin A Williams, James F Wallman, Bryan D Lessard, Christopher R J Kavazos, D Nkosinathi Mazungula, Martin H Villet
Published research has offered contradictory evidence of the occurrence of nocturnal oviposition by carrion-breeding blowflies, a behavior that can affect the interpretation of forensic estimates of a minimum post mortem interval (minPMI) by up to 12 hours, depending on latitude and season. The majority of published studies are from the northern hemisphere. Field experiments were conducted in South Africa and Australia that extend observations to species of the southern hemisphere. Various vertebrate carrion was exposed at night in summer under different lunar phases and/or artificial lighting, and in woodland and pasture areas...
April 13, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28408672/the-genome-sequence-of-avibacterium-paragallinarum-strain-cl-has-a-large-repertoire-of-insertion-sequence-elements
#8
Guillermo Horta-Valerdi, Maria Patricia Sanchez-Alonso, Victor M Perez-Marquez, Erasmo Negrete-Abascal, Sergio Vaca-Pacheco, Ismael Hernandez-Gonzalez, Zulema Gomez-Lunar, Gabriela Olmedo-Álvarez, Candelario Vázquez-Cruz
The draft genome sequence of Avibacterium paragallinarum strain CL serovar C is reported here. The genome comprises 154 contigs corresponding to 2.4 Mb with 41% G+C content and many insertion sequence (IS) elements, a characteristic not previously reported in A. paragallinarum.
April 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28388669/reference-standards-for-body-fat-measures-using-ge-dual-energy-x-ray-absorptiometry-in-caucasian-adults
#9
Mary T Imboden, Whitney A Welch, Ann M Swartz, Alexander H K Montoye, Holmes W Finch, Matthew P Harber, Leonard A Kaminsky
BACKGROUND: Dual energy x-ray absorptiometry (DXA) is an established technique for the measurement of body composition. Reference values for these variables, particularly those related to fat mass, are necessary for interpretation and accurate classification of those at risk for obesity-related health complications and in need of lifestyle modifications (diet, physical activity, etc.). Currently, there are no reference values available for GE-Healthcare DXA systems and it is known that whole-body and regional fat mass measures differ by DXA manufacturer...
2017: PloS One
https://www.readbyqxmd.com/read/28374651/relationship-between-lunar-cycle-and-haemorrhagic-complication-rate-in-surgery
#10
Edoardo Raposio, Giorgia Caruana, Pierluigi Santi, Ferdinando Cafiero
BACKGROUND: The aim of this study was to evaluate a possible relationship between lunar cycles and haemorrhagic complication rate in surgery. MATERIALS AND METHODS: The possible relationship between moon phases and surgical outcome was tested by evaluating the haemorrhagic complication rate for 18,760 patients who underwent surgery between January 2001 and December 2008 at the National Institute for Cancer Research in Genoa. A total of 103 lunar phases were considered using Chi-square (χ(2)) test analysis, and patients were allocated a surgery date...
April 4, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28371841/field-modeling-and-ray-tracing-of-a-miniature-scanning-electron-microscope-beam-column
#11
Jody S Loyd, Don A Gregory, Jessica A Gaskin
A miniature scanning electron microscope (SEM) focusing column design is introduced and its potential performance assessed through an estimation of parameters that affect the probe radius, to include source size, spherical and chromatic aberration, diffraction and space charge broadening. The focusing column, a critical component of any SEM capable of operating on the lunar surface, was developed by the NASA Marshall Space Flight Center and Advanced Research Systems. The ray-trace analysis presented uses a model of the electrostatic field (within the focusing column) that is first calculated using the boundary element method (BEM)...
March 28, 2017: Microscopy
https://www.readbyqxmd.com/read/28364325/vitamin-d-status-and-abdominal-aortic-calcification-in-postmenopausal-women
#12
A El Maghraoui, T Hamza, S Sadni, A El Maataoui, A Majjad, A Rezqi, Z Ouzzif, A Mounach
Vitamin D has an important role in bone metabolism and may be involved in the process of vascular calcification. The objective of this study was to evaluate the effect of vitamin D status on the presence of abdominal aortic calcification (AAC). We enrolled, in a cross-sectional study, 429 postmenopausal women [mean age, weight, and BMI of 59.5 ± 8.3 (50-83) years, 75.8 ± 13.3 (35-165) kg, and 29.9 ± 5.2 (14.6-50.8) kg/m(2), respectively]. Lateral vertebral fracture assessment (VFA) images and scans of the lumbar spine and proximal femur were obtained using a Lunar Prodigy densitometer...
March 31, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28317904/robust-and-elastic-lunar-and-martian-structures-from-3d-printed-regolith-inks
#13
Adam E Jakus, Katie D Koube, Nicholas R Geisendorfer, Ramille N Shah
Here, we present a comprehensive approach for creating robust, elastic, designer Lunar and Martian regolith simulant (LRS and MRS, respectively) architectures using ambient condition, extrusion-based 3D-printing of regolith simulant inks. The LRS and MRS powders are characterized by distinct, highly inhomogeneous morphologies and sizes, where LRS powder particles are highly irregular and jagged and MRS powder particles are rough, but primarily rounded. The inks are synthesized via simple mixing of evaporant, surfactant, and plasticizer solvents, polylactic-co-glycolic acid (30% by solids volume), and regolith simulant powders (70% by solids volume)...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285937/prevention-of-cardiac-adverse-events-associated-with-the-use-of-drugs-in-patients-with-severe-mental-illness-case-report
#14
Elena López-Lunar, Cristóbal Manuel Rodríguez-Leal, Rosa María Provencio-Arranz, José Manuel Carrascosa-Bernáldez, Álvaro Rivera-Villaverde
No abstract text is available yet for this article.
March 9, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28261864/total-and-visceral-adiposity-are-associated-with-prevalent-vertebral-fracture-in-women-but-not-men-at-age-62-years-the-newcastle-thousand-families-study
#15
Karen Hind, Mark Pearce, Fraser Birrell
Low body weight is an established risk factor for osteoporosis and fracture, but the skeletal risks of higher adiposity are unclear and appear sex-specific and site-dependent. The aim of this study was to investigate associations of total fat mass (TFM), visceral adipose tissue (VAT), and C-reactive protein (CRP) with bone mineral density (BMD) and prevalent vertebral fracture (VF) in men and women aged 62 years. A total of 352 men and women aged 62.5 ± 0.5 years from the Newcastle Thousand Families Study cohort received dual-energy X-ray absorptiometry (DXA) evaluations of femoral neck and lumbar spine BMD, of the lateral spine for vertebral fracture assessment, and of the whole body for TFM and VAT (GE Lunar CoreScan, Madison, WI, USA)...
March 6, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28258604/the-effect-of-lunisolar-tidal-acceleration-upon-stem-elongation-growth-nutations-and-leaf-movements-in-peppermint-mentha-%C3%A3-piperita-l
#16
Urszula Zajączkowska, Peter W Barlow
• Orbital movement of the Moon generates a system of gravitational fields which periodically alters the gravitational force on Earth. This lunar tidal acceleration (Etide) is known to act as an external environmental factor affecting many growth and developmental phenomena in plants. Our study has focused on the lunar tidal influence on stem elongation growth, nutations, and leaf movements of peppermint. • Plants were continuously recorded by time-lapse photography under constant illumination as well in constant illumination following five days of alternating dark-light cycles...
March 3, 2017: Plant Biology
https://www.readbyqxmd.com/read/28258473/sarcopenia-in-rheumatoid-arthritis-prevalence-influence-of-disease-activity-and-associated-factors
#17
Ange Ngeuleu, F Allali, L Medrare, A Madhi, H Rkain, N Hajjaj-Hassouni
Evaluate the prevalence of sarcopenia on patients with rheumatoid arthritis (RA), the influence of sarcopenia on disease activity and factors associated with sarcopenia. One hundred and twenty-three patients aged over 18 years with RA based on the 1987 ACR/EULAR classification criteria were enrolled. We performed a whole body DXA scan using a dual-energy X-ray absorptiometry (DXA) scanner lunar prodigy to measure fat mass, lean mass, and bone mass in the whole body and body parts. According to the anthropometric equation by Baumgartner et al...
March 3, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28246647/evaporative-fractionation-of-zinc-during-the-first-nuclear-detonation
#18
James M D Day, Frédéric Moynier, Alex P Meshik, Olga V Pradivtseva, Donald R Petit
Volatile element and compound abundances vary widely in planets and were set during the earliest stages of solar system evolution. Experiments or natural analogs approximating these early conditions are limited. Using silicate glass formed from arkosic sands during the first nuclear detonation at the Trinity test site, New Mexico, we show that the isotopes of zinc were fractionated during evaporation. The green silicate glasses, termed "trinitite," show +0.5 ± 0.1‰/atomic mass unit isotopic fractionation from ~200 m to within 10 m of ground zero of the detonation, corresponding to an α fractionation factor between 0...
February 2017: Science Advances
https://www.readbyqxmd.com/read/28224926/a-30-month-worksite-based-lifestyle-program-to-promote-cardiovascular-health-in-middle-aged-bank-employees-design-of-the-tansnip-pesa-randomized-controlled-trial
#19
Jennifer K Coffeng, Hidde P van der Ploeg, José M Castellano, Juan M Fernández-Alvira, Borja Ibáñez, Inés García-Lunar, Allard J van der Beek, Antonio Fernández-Ortiz, Agustín Mocoroa, Laura García-Leal, Evelyn Cárdenas, Carolina Rojas, María I Martínez-Castro, Silvia Santiago-Sacristán, Miriam Fernández-Gallardo, José M Mendiguren, Sameer Bansilal, Willem van Mechelen, Valentín Fuster
BACKGROUND: Cardiovascular disease (CVD) is the leading cause of death worldwide. With atherosclerosis as the underlying cause for many CVD events, prevention or reduction of subclinical atherosclerotic plaque burden (SAPB) through a healthier lifestyle may have substantial public health benefits. OBJECTIVE: The objective was to describe the protocol of a randomized controlled trial investigating the effectiveness of a 30-month worksite-based lifestyle program aimed to promote cardiovascular health in participants having a high or a low degree of SAPB compared with standard care...
February 2017: American Heart Journal
https://www.readbyqxmd.com/read/28222408/severe-osteoporosis-with-multiple-spontaneous-vertebral-fractures-in-a-young-male-carrying-triple-polymorphisms-in-the-vitamin-d-receptor-collagen-type-1-and-low-density-lipoprotein-receptor-related-peptide-5-genes
#20
Maria P Yavropoulou, Panagoulia Kollia, Dimitris Chatzidimitriou, Stavroula Samara, Lemonia Skoura, John G Yovos
Osteoporosis is a common disease with a strong genetic component. Several studies have reported the vitamin D receptor (VDR), collagen type I (COL1A1), and LDL receptor-related protein 5 (LRP5) genes as the most likely candidates. However, most of the studies have been carried out in postmenopausal women and older men and show inconsistent results. CASE PRESENTATION: We report a case of a 26-year old male who presented with severe back pain of acute onset, unrelated to any kind of trauma, and diffuse myalgia...
October 2016: Hormones: International Journal of Endocrinology and Metabolism
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