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https://www.readbyqxmd.com/read/28241409/twin-rectal-tonsils-mimicking-carcinoid-or-mucosa-associated-lymphoid-tissue-lymphoma
#1
Masanori Takehara, Naoki Muguruma, Shinji Kitamura, Tetsuo Kimura, Koichi Okamoto, Hiroshi Miyamoto, Yoshimi Bando, Tetsuji Takayama
The rectal tonsil is a rare polypoid lesion exclusively found in the rectum and is considered a reactive proliferation of the lymphoid tissue. Although this lesion is benign, we recommend that it should be differentiated from carcinoid or polypoid type of mucosaassociated lymphoid tissue (MALT) lymphomas, based on gross findings. In this case report, we describe a case of rectal lesions with a unique appearance in a 41-year-old man. Colonoscopy revealed two 5-mm-sized nodules located opposite from each other on the left and right sides of the lower rectum...
February 28, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/28240990/bi-modal-nanoheteroepitaxy-of-gaas-on-si-by-metal-organic-vapor-phase-epitaxy
#2
Ivan Prieto, Roksolana Kozak, Oliver Skibitzki, Marta D Rossell, Peter Zaumseil, Giovanni Capellini, Emilio Gini, Karsten Kunze, Yadira Arroyo Rojas Dasilva, Rolf Erni, Thomas Schroeder, Hans von Känel
Nano-heteroepitaxial growth of GaAs on Si(001) by metal organic vapor phase epitaxy was investigated to study emerging materials phenomena on the nano-scale of III-V/Si interaction. Arrays of Si nano-tips (NTs) embedded in a SiO2 matrix were used as substrates. The NTs had top Si openings of 50-90 nm serving as seeds for the selective growth of GaAs nano-crystals (NCs). The structural and morphological properties were investigated by high resolution scanning electron microscopy, atomic force microscopy, electron backscatter diffraction, x-ray diffraction, and high resolution scanning transmission electron microscopy...
February 27, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28240987/structural-and-optical-characterization-of-gaas-nano-crystals-selectively-grown-on-si-nano-tips-by-movpe
#3
Oliver Skibitzki, Ivan Prieto, Roksolana Kozak, Giovanni Capellini, Peter Zaumseil, Yadira Arroyo Rojas Dasilva, Marta D Rossell, Rolf Erni, Hans von Känel, Thomas Schroeder
We present the nanoheteroepitaxial growth of gallium arsenide (GaAs) on nano-patterned silicon (Si) (001) substrates fabricated using a CMOS technology compatible process. The selective growth of GaAs nano-crystals (NCs) was achieved at 570 °C by MOVPE. A detailed structure and defect characterization study of the grown nano-heterostructures was performed using scanning transmission electron microscopy, x-ray diffraction, micro-Raman, and micro-photoluminescence (μ-PL) spectroscopy. The results show single-crystalline, nearly relaxed GaAs NCs on top of slightly, by the SiO2-mask compressively strained Si nano-tips (NTs)...
February 27, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28240920/multivariate-analysis-of-genetic-and-environmental-influences-on-parenting-in-adolescence
#4
Megan W Patterson, Amanda K Cheung, Frank D Mann, Elliot M Tucker-Drob, K Paige Harden
Adolescents whose parents are affectionate, maintain consistent rules, and are knowledgeable about their whereabouts tend to exhibit more adaptive levels of psychological functioning across multiple domains. Behavioral genetic research has documented the sensitivity of parenting to genetically influenced child characteristics and behaviors. Yet, the question of whether the correlations between parenting behaviors are driven by overlapping parent effects, overlapping child effects, or some combination of the two remains open...
February 27, 2017: Journal of Family Psychology: JFP
https://www.readbyqxmd.com/read/28240821/-invited-review-genetic-research-on-alcohol-use-outcomes-in-african-american-populations-a-review-of-the-literature-associated-challenges-and-implications
#5
REVIEW
Danielle M Dick, Peter Barr, Mignonne Guy, Aashir Nasim, Denise Scott
BACKGROUND AND OBJECTIVES: There have been remarkable advances in understanding genetic influences on complex traits; however, individuals of African descent have been underrepresented in genetic research. METHODS: We review the limitations of existing genetic research on alcohol phenotypes in African Americans (AA) including both twin and gene identification studies, possible reasons for underrepresentation of AAs in genetic research, the implications of the lack of racially diverse samples, and special considerations regarding conducting genetic research in AA populations...
February 27, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28240386/genetic-and-environmental-influences-on-mean-diffusivity-and-volume-in-subcortical-brain-regions
#6
Nathan A Gillespie, Michael C Neale, Donald J Hagler, Lisa T Eyler, Christine Fennema-Notestine, Carol E Franz, Michael J Lyons, Linda K McEvoy, Anders M Dale, Matthew S Panizzon, William S Kremen
Increased mean diffusivity (MD) is hypothesized to reflect tissue degeneration and may provide subtle indicators of neuropathology as well as age-related brain changes in the absence of volumetric differences. Our aim was to determine the degree to which genetic and environmental variation in subcortical MD is distinct from variation in subcortical volume. Data were derived from a sample of 387 male twins (83 MZ twin pairs, 55 DZ twin pairs, and 111 incomplete twin pairs) who were MRI scanned as part of the Vietnam Era Twin Study of Aging...
February 27, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28240343/term-twin-birth-impact-of-mode-of-delivery-on-outcome
#7
Elina Ylilehto, Outi Palomäki, Heini Huhtala, Jukka Uotila
The main aims of this study were to compare maternal and neonatal outcomes in term twin birth according to the planned mode of delivery and to study the effects of chorionicity and inter-twin delivery time on neonatal outcome MATERIAL AND METHODS: A single-center cohort study of 495 women with twin deliveries at ≥ 37+0 weeks of gestation. Term twin deliveries were divided into a trial of labor group (TOL, 69.3%) and a planned cesarean section (CS) group (30.7%). The primary outcomes were maternal and neonatal morbidity RESULTS: 80...
February 27, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28239200/the-influence-of-pulsed-electroplating-frequency-and-duty-cycle-on-copper-film-microstructure-and-stress-state
#8
James B Marro, Taghi Darroudi, Chukwudi A Okoro, Yaw S Obeng, Kathleen C Richardson
In this work we studied the impact of pulse electroplating parameters on the cross-sectional and surface microstructures of blanket copper films using electron backscattering diffraction and x-ray diffraction. The films evaluated were highly (111) textured in the direction perpendicular to the film surface. The degree of preferential orientation was found to decrease with longer pulse on-times, due to strain energy driven growth of other grain orientations. Residual biaxial stresses were also measured in the films and higher pulse frequencies during deposition led to smaller biaxial stresses in the films...
January 2017: Thin Solid Films
https://www.readbyqxmd.com/read/28238729/discordant-retinopathy-of-prematurity-in-twin-anemia-polycythemia-sequence
#9
Mariana Patricia Sheales, Shivanand Sheth, Andrew G Edwards, Susan Mary Carden
No abstract text is available yet for this article.
February 23, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28238291/modelling-the-risk-factors-for-birth-weight-in-twin-gestations-a-quantile-regression-approach
#10
A John Michael, Belavendra Antonisamy, S Mahasampath Gowri, Ramasami Prakash
Birth weight is used as a proxy for the general health condition of newborns. Low birth weight leads to adverse events and its effects on child growth are both short- and long-term. Low birth weight babies are more common in twin gestations. The aim of this study was to assess the effects of maternal and socio-demographic risk factors at various quantiles of the birth weight distribution for twin gestations using quantile regression, a robust semi-parametric technique. Birth records of multiple pregnancies from between 1991 and 2005 were identified retrospectively from the birth registry of the Christian Medical College and hospitals in Vellore, India...
February 27, 2017: Journal of Biosocial Science
https://www.readbyqxmd.com/read/28237885/assessment-of-tobacco-alcohol-and-cannabinoid-metabolites-in-645-meconium-samples-of-newborns-compared-to-maternal-self-reports
#11
Sandrine Lamy, Benjamin Hennart, Estelle Houivet, Sylvain Dulaurent, Heloise Delavenne, Jacques Benichou, Delphine Allorge, Stéphane Marret, Florence Thibaut
Prenatal psychoactive substance exposure has significant impact on neonatal health and child development and the development of reliable biomarkers is critical. Meconium presents several advantages for detecting prenatal exposure to psychoactive substances, as it is easy to collect and provides a broad time frame of exposure (third trimester). The aim of our study was to compare the prevalence of alcohol, tobacco and/or cannabis use during the third trimester of pregnancy (using maternal self-reports) with the results of meconium testing of their metabolites in newborns (cotinine, ethyl-glucuronide (EtG) and cannabinoid metabolites)...
February 13, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28237540/heritability-of-the-femoral-intima-media-thickness
#12
Bence Fejer, Adam D Tarnoki, David L Tarnoki, Pierleone Lucatelli, Levente Littvay, Pal Maurovich-Horvat, Adam L Jermendy, Attila Kovacs, Erika Godor, Corrado Fagnani, Maria A Stazi, Andrea A Molnar, Fabrizio Fanelli, Carlo Cirelli, Filippo Farina, Claudio Baracchini, Giorgio Meneghetti, Giacomo Pucci, Gyorgy Jermendy, Bela Merkely, Giuseppe Schillaci, Emanuela Medda
BACKGROUND: The measurement of femoral intima-media thickness (IMT) is underutilized in the clinical practice, although it is a surrogate marker of cardiovascular disease. MATERIALS AND METHODS: 388 Hungarian and Italian twins (121 monozygotic, 73 dizygotic pairs) underwent bilateral B-mode sonography of femoral arteries. IMT was measured by semiautomated software, where available, or by calipers. RESULTS: Within-pair correlation in monozygotic twins was higher than in dizygotics for each parameter...
February 22, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28237326/metabolic-profiling-of-stages-of-healthy-pregnancy-in-hu-sheep-using-nuclear-magnetic-resonance-nmr
#13
Lingwei Sun, Yixuan Guo, Yixuan Fan, Haitao Nie, Ruocheng Wang, Feng Wang
Nutrition is one of the most important factors affecting the reproductive performance of animals. Changes in the ovine maternal metabolism during pregnancy are critical to fetal development. To understand the differences in ovine metabolic changes that occur during normal pregnancy, pregnant ewes carrying twin fetuses (n = 8) were selected at 35 days of gestation (dG). All ewes received 100% of National Research Council (NRC) requirements of all nutrients and energy during this experiment. At 50, 70, 90, and 110 dG, maternal plasma samples were collected and designated as one of four corresponding time points (T1, T2, T3, and T4, respectively)...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28236812/unusual-twinning-resulting-in-chimerism-a-systematic-review-on-monochorionic-dizygotic-twins
#14
Henrike E Peters, Tamar E König, Marieke O Verhoeven, Roel Schats, Velja Mijatovic, Johannes C F Ket, Cornelis B Lambalk
Traditionally, it is understood that dizygotic (DZ) twins always have a dichorionic placenta. However, with 8% blood chimerism in DZ twins, placental sharing is probably more common than previously has been recognized. In this article, we will review all available cases of monochorionic dizygotic (MCDZ) twins. A total of 31 twins have been described in literature. A monochorionic diamniotic placenta is reported in all cases. Assisted reproductive technology is responsible for the origin of the pregnancy in 82...
February 27, 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/28236696/effect-of-ethyl-ester-l-lysine-triisocyanate-addition-to-produce-reactive-pla-pcl-bio-polyester-blends-for-biomedical-applications
#15
Annamaria Visco, Davide Nocita, Alberto Giamporcaro, Sara Ronca, Giuseppe Forte, Alessandro Pistone, Claudia Espro
We report in this paper the effects of Ethyl Ester L-Lysine Triisocyanate (LTI) on the physical-mechanical properties of Poly(lactide)/Poly(ε-caprolactone) (PLA/PCL) polyesters blends. The PLA/PCL ratios considered were 20/80, 50/50 and 80/20 (wt/wt %) and LTI was added in amounts of 0.0-0.5-1.0 phr. PLA and PCL reacted with LTI during processing in a Brabender twin screw internal mixer to produce block copolymers in-situ. The resulting blends have been characterized by torque measurements, uniaxial tensile tests, Differential Scanning Calorimeter, contact angle measurements with a Phosphate Buffered Saline (PBS) solution, ATR analysis and morphological SEM observations...
February 16, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28236250/group-b-streptococcal-disease-in-infants-in-the-first-year-of-life-a-nationwide-surveillance-study-in-japan-2011-2015
#16
Kousaku Matsubara, Kiyoshi Hoshina, Masatoshi Kondo, Isao Miyairi, Yoshiya Yukitake, Yusuke Ito, Kisei Minami, Ryuichi Genkawa
PURPOSE: This study aimed to describe the epidemiology of childhood group B streptococcus (GBS) disease including late late-onset disease (LLOD) and to clinically characterize recurrent cases and twin-sibling cases in Japan. METHODS: We collected information on infants (<1 year of age) with invasive GBS disease and institutional information about births and transfers through a nationwide questionnaire between 2011 and 2015. RESULTS: We identified 133 infants with early-onset disease (EOD), 274 late-onset disease (LOD), and 38 LLOD from 149 institutes...
February 25, 2017: Infection
https://www.readbyqxmd.com/read/28235922/twinning-project-strengthens-links-between-vet-schools
#17
(no author information available yet)
No abstract text is available yet for this article.
February 25, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28235399/case-report-of-an-atypical-early-onset-x-linked-retinoschisis-in-monozygotic-twins
#18
Vittoria Murro, Roberto Caputo, Giacomo Maria Bacci, Andrea Sodi, Dario Pasquale Mucciolo, Sara Bargiacchi, Sabrina Rita Giglio, Gianni Virgili, Stanislao Rizzo
BACKGROUND: X-linked Retinoschisis (XLRS) is one of the most common macular degenerations in young males, with a worldwide prevalence ranging from 1:5000 to 1:20000. Clinical diagnosis of XLRS can be challenging due to the highly variable phenotypic presentation and limited correlation has been identified between mutation type and disease severity or progression. CASE PRESENTATION: We report the atypical early onset of XLRS in 3-month-old monozygotic twins. Fundus examination was characterized by severe bullous retinal schisis with pre-retinal and intraretinal haemorrhages...
February 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28234976/the-influence-of-sexual-activity-on-the-vaginal-microbiota-and-gardnerella-vaginalis-clade-diversity-in-young-women
#19
Lenka A Vodstrcil, Jimmy Twin, Suzanne M Garland, Christopher K Fairley, Jane S Hocking, Matthew G Law, Erica L Plummer, Katherine A Fethers, Eric P F Chow, Sepehr N Tabrizi, Catriona S Bradshaw
OBJECTIVES: To examine the influence of sexual activity on the composition and consistency of the vaginal microbiota over time, and distribution of Gardnerella vaginalis clades in young women. METHODS: Fifty-two participants from a university cohort were selected. Vaginal swabs were self-collected every 3-months for up to 12 months with 184 specimens analysed. The vaginal microbiota was characterised using Roche 454 V3/4 region 16S rRNA sequencing, and G.vaginalis clade typing by qPCR...
2017: PloS One
https://www.readbyqxmd.com/read/28234366/suppressing-the-image-smear-of-the-vibration-modulation-transfer-function-for-remote-sensing-optical-cameras
#20
Jin Li, Zilong Liu, Si Liu
In on-board photographing processes of satellite cameras, the platform vibration can generate image motion, distortion, and smear, which seriously affect the image quality and image positioning. In this paper, we create a mathematical model of a vibrating modulate transfer function (VMTF) for a remote-sensing camera. The total MTF of a camera is reduced by the VMTF, which means the image quality is degraded. In order to avoid the degeneration of the total MTF caused by vibrations, we use an Mn-20Cu-5Ni-2Fe (M2052) manganese copper alloy material to fabricate a vibration-isolation mechanism (VIM)...
February 20, 2017: Applied Optics
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