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https://www.readbyqxmd.com/read/28926704/chromatographic-properties-of-minimal-aspect-ratio-monolithic-silica-columns
#1
Takeshi Hara, Shunta Futagami, Wim De Malsche, Sebastiaan Eeltink, Herman Terryn, Gino V Baron, Gert Desmet
We report on a study wherein we synthesized TMOS-based silica monolithic skeletons in capillaries with an i.d. of 5 and 10 μm to produce skeleton structures with very low capillary-to-domain size aspect-ratios. These structures include the absolute minimal aspect-ratio case of a monolithic structure whose cross-section only contains a single node point. With domain-sized based reduced plate heights running as low as hmin = 1.3-1.5 for retained coumarin dyes providing a retention factor of k = 0.6-1.0, the study confirms the classic observation that ultra-low aspect ratio columns generate a markedly lower dispersion than columns with a larger aspect ratio made in the past by Knox, Jorgenson and Kennedy for the packed bed of spheres, but now for silica monoliths...
September 19, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28926618/teneurin-2-presence-in-rat-and-human-odontoblasts
#2
K R Torres-da-Silva, G W L Tessarin, C A Dias, I Z Guiati, E Ervolino, A Gonçalves, I M Beneti, D A Lovejoy, C A Casatti
Teneurins are transmembrane proteins consisting of four paralogues (Ten-1-4), notably expressed in the central nervous system during development. All teneurins contain a bioactive peptide in their carboxyl terminal named teneurin C-terminal associated peptide (TCAP). The present study analyzed the detailed distribution of teneurin-2-like immunoreactive (Ten-2-LI) cells in developing and mature rat molar teeth, as well as in mature human dental pulps. Ten-2 and TCAP-2 genic expressions were also evaluated in rat and human dental pulps...
2017: PloS One
https://www.readbyqxmd.com/read/28926407/dysfunctional-hdl-from-hiv-individuals-promotes-monocyte-derived-foam-cell-formation-in-vitro
#3
Thomas A Angelovich, Anna C Hearps, Michael N Oda, Mark S Borja, Diana Huynh, Stefanie Homann, Anthony Jaworowski, Theodoros Kelesidis
OBJECTIVE: The role of HDL function in HIV-related atherosclerotic cardiovascular disease (CVD) is unclear. HDLs isolated from HIV+ [HIV(+)HDL] and HIV-uninfected individuals (HDL) were assessed for HDL function and ability to promote monocyte-derived foam cell formation (MDFCF) (a key event in HIV-related CVD) ex vivo. DESIGN/METHODS: Using an established in vitro model of atherogenesis and plasma samples from an established cross-sectional study of virologically-suppressed HIV+ males on stable effective antiretroviral therapy (ART) and with low CVD risk (median age: 42 years; n = 10), we explored the impact of native HDL [HIV(+)HDL] on MDFCF...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926404/metabolic-health-across-the-body-mass-index-spectrum-in-hiv-infected-and-hiv-uninfected-men
#4
Jordan E Lake, Xiuhong Li, Frank J Palella, Kristine M Erlandson, Dorothy Wiley, Lawrence Kingsley, Lisa P Jacobson, Todd T Brown
OBJECTIVES: In the general population, metabolic health (MH) often declines as body mass index (BMI) increases. However, some obese individuals maintain MH. HIV and antiretroviral therapy (ART) have been associated with metabolic disturbances. We hypothesized that HIV-infected (HIV+) men on suppressive ART experience less MH than HIV-uninfected (HIV-) men across all BMI categories. DESIGN/METHODS: In a cross-sectional analysis of 1018 HIV+ and 1092 HIV- men enrolled in the Multicenter AIDS Cohort Study, Poisson regression with robust variance determined associations between HIV serostatus and MH prevalence (defined as meeting 2 of 5 NCEP/ATP III metabolic syndrome criteria), adjusting for age, race, BMI category, smoking and hepatitis C virus infection status...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926398/association-of-a-3-untranslated-region-polymorphism-in-pcsk9-with-hiv-viral-load-and-cd4-levels-in-hiv-hepatitis-c-virus-co-infected-women
#5
Mark H Kuniholm, Hua Liang, Kathryn Anastos, Deborah Gustafson, Seble Kassaye, Marek Nowicki, Beverly E Sha, Emilia J Pawlowski, Stephen J Gange, Bradley E Aouizerat, Tatiana Pushkarsky, Michael I Bukrinsky, Vinayaka R Prasad
OBJECTIVE: To assess variation in genes that regulate cholesterol metabolism in relation to the natural history of HIV infection. DESIGN: Cross-sectional and longitudinal analysis of the Women's Interagency HIV Study (WIHS). METHODS: We examined 2,050 single nucleotide polymorphisms (SNPs) in 19 genes known to regulate cholesterol metabolism in relation to HIV viral load and CD4 T cell levels in a multiracial cohort of 1,066 antiretroviral therapy (ART) naïve women...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926363/blood-pressure-measurements-over-thin-and-thick-sleeves-in-the-frail-elderly
#6
Sachiko Ozone, Mikiya Sato, Ayumi Takayashiki, Takuya Sato, Aya Matsushita, Hisashi Yoshimoto, Tetsuhiro Maeno
OBJECTIVE: Blood pressure (BP) measurement is recommended on bare arms, but undressing the arms for BP measurements is often difficult for frail elderly individuals. We aimed to assess the accuracy of BP measurements over arms with thin and thick clothing among the frail elderly. PARTICIPANTS AND METHODS: This is a cross-sectional study. Individuals aged 65 years or older were recruited from three long-term care facilities in Japan between April and May 2016. The main outcome measures were BP measurements (a) on a bare arm, (b) over a thin shirt, (c) over a thin shirt and a cardigan, and (d) over the sleeve of a thin shirt and a cardigan rolled up to the elbow...
September 18, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28925711/role-of-counterion-in-the-adsorption-behavior-of-1-1-ionic-surfactants-at-fluid-interfaces-adsorption-properties-of-alkali-perfluoro-n-octanoates-at-the-air-water-interface
#7
Klaus Lunkenheimer, Katrina Geggel, Dietrich Prescher
Equilibrium surface tension (σe) versus bulk concentration (c) isotherms of aqueous, surface-chemically pure solutions of various alkali perfluoro-n-octanoates were measured at 295 K. These 1:1 ionic surfactant systems belong to the pseudo nonionic ones. Evaluating the different σe vs log c isotherms by basic adsorption equations reveals that they follow ideal surface behavior. The novelty of this investigation exists in the fact that the surface area demand per molecule adsorbed calculated from the experimental σe vs log c isotherms is identical to that of the hydrated alkali cation...
September 19, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28925586/haemopref-further-evaluation-of-patient-perception-and-preference-for-treatment-in-a-real-world-setting
#8
S Bonanad, M Schulz, A Gordo, D Spurden, M Cicchetti, J C Cappelleri, C Tolley, H Staunton, E Brohan
INTRODUCTION: Adherence to haemophilia A (HA) treatment may be influenced by patients' beliefs about their condition and treatment. Furthermore, difficulties administering treatment may lead to poor adherence. New treatment strategies aim to reduce the burden associated with administration and to improve patient perception of treatment, which, in turn, increase adherence levels. AIMS: This study aimed to examine patient perception of HA treatment and related factors using patient-reported outcome (PRO) questionnaires and to confirm the psychometric properties of a recently developed questionnaire, the HaemoPREF...
September 19, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28925569/prescribing-errors-intercepted-by-pharmacist-intervention-in-care-of-patients-hospitalised-with-breast-and-gynaecological-cancer-at-a-brazilian-teaching-hospital
#9
A C Ferracini, A T Rodrigues, A A de Barros, S F Derchain, P G Mazzola
Oncologic inpatients often require multiple drug therapy. They may be at higher risk of experiencing prescribing errors, which pharmacist interventions may help to avoid. This study aimed to evaluate the types of prescribing errors, pharmaceutical interventions and differences in clinical significance, in prescriptions for hospitalised patients with breast and gynaecological cancer. A cross-sectional, prospective study was conducted at the oncology ward of a clinic specialised in breast and gynaecology cancer...
September 19, 2017: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28924741/spectrum-of-infectious-diseases-among-newly-arrived-eritrean-refugees-in-switzerland-a-cross-sectional-study
#10
Afona Chernet, Andreas Neumayr, Christoph Hatz, Kerstin Kling, Véronique Sydow, Katharina Rentsch, Jürg Utzinger, Nicole Probst-Hensch, Hanspeter Marti, Beatrice Nickel, Niklaus D Labhardt
OBJECTIVES: Our study aimed at determining the prevalence of selected infectious diseases among recently arrived Eritrean refugees in Switzerland. METHODS: In this cross-sectional study, asymptomatic Eritrean migrants aged ≥16 years who arrived <24 months ago were recruited at refugee centres in Switzerland. Infectious disease screening included serology for HIV, hepatitis B and C, syphilis and schistosomiasis, polymerase chain reaction (PCR) for malaria, stool microscopy for helminths and intestinal protozoa and circulating cathodic antigen (CCA) testing in urine for schistosomiasis...
September 19, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28924546/sirenomelia-associated-with-hypoplastic-left-heart-in-a-newborn
#11
H Turgut, R Ozdemir, I K Gokce, C Karakurt, A Karadag
Sirenomelia, also known as "mermaid malformation/syndrome," is a rare, serious congenital anomaly characterized by variable degrees of fusion of the lower limbs and associated with severe malformations of vertebral, genitourinary, cardiovascular system and single umbilical artery. The first pregnancy of a 25-year-old woman resulted in one twin born by Cesarian section at 32 weeks' gestation, who was referred to our hospital with cyanosis, a congenital anomaly and respiratory distress. On physical examination, there was no urogenital region and anal fissure and gender was indeterminate...
June 30, 2017: Balkan Journal of Medical Genetics: BJMG
https://www.readbyqxmd.com/read/28924398/what-does-the-future-hold-for-scientific-journals-visual-abstracts-and-other-tools-for-communicating-research
#12
REVIEW
Vahagn C Nikolian, Andrew M Ibrahim
Journals fill several important roles within academic medicine, including building knowledge, validating quality of methods, and communicating research. This section provides an overview of these roles and highlights innovative approaches journals have taken to enhance dissemination of research. As journals move away from print formats and embrace web-based content, design-centered thinking will allow for engagement of a larger audience. Examples of recent efforts in this realm are provided, as well as simplified strategies for developing visual abstracts to improve dissemination via social media...
September 2017: Clinics in Colon and Rectal Surgery
https://www.readbyqxmd.com/read/28924274/quantitative-volumetric-analysis-of-a-retinoic-acid-induced-hypoplastic-model-of-chick-thymus-using-image-j
#13
Ayesha Haque, Muhammad Yunus Khan
OBJECTIVE: To assess the total volume change in a retinoic acid-induced, hypoplastic model of a chick thymus using Image-J. METHODS: This experimental study was carried out at the anatomy department of College of Physicians and Surgeons, Islamabad, Pakistan, from February 2009 to February 2010, and comprised fertilised chicken eggs. The eggs were divided into experimental group A and control group C. Group A was injected with 0.3µg of retinoic acid via yolk sac to induce a defective model of a thymus with hypoplasia...
September 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28924181/common-and-dissociable-regional-cerebral-blood-flow-differences-associate-with-dimensions-of-psychopathology-across-categorical-diagnoses
#14
A N Kaczkurkin, T M Moore, M E Calkins, R Ciric, J A Detre, M A Elliott, E B Foa, A Garcia de la Garza, D R Roalf, A Rosen, K Ruparel, R T Shinohara, C H Xia, D H Wolf, R E Gur, R C Gur, T D Satterthwaite
The high comorbidity among neuropsychiatric disorders suggests a possible common neurobiological phenotype. Resting-state regional cerebral blood flow (CBF) can be measured noninvasively with magnetic resonance imaging (MRI) and abnormalities in regional CBF are present in many neuropsychiatric disorders. Regional CBF may also provide a useful biological marker across different types of psychopathology. To investigate CBF changes common across psychiatric disorders, we capitalized upon a sample of 1042 youths (ages 11-23 years) who completed cross-sectional imaging as part of the Philadelphia Neurodevelopmental Cohort...
September 19, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28923650/does-renal-tubular-injury-induced-local-tissue-hypoxia-involve-post-transplantation-erythrocytosis
#15
A Unal, S Ata, C Karakurkcu, M Z Ciraci, I Kocyigit, M H Sipahioglu, B Tokgoz, O Oymak
BACKGROUND: The pathogenesis of post-transplantation erythrocytosis (PTE) is not well understood and appears to be multifactorial. Our hypothesis in this study was that several factors, including toxicity of calcineurin inhibitor, immunologic factors, and chronic allograft nephropathy, can trigger local tissue hypoxia in peritubular interstitium, which is where production of erythropoietin (EPO) takes place. This local interstitial tissue hypoxia can cause an increase in renal EPO production, which induces the development of PTE...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923229/randomized-controlled-trials-in-neuroendocrine-tumors
#16
REVIEW
John C McAuliffe, Edward M Wolin
Understanding of neuroendocrine tumors has increased greatly in the last 2 decades. Along with this, the prevalence of neuroendocrine tumors has increased because of the ubiquitous use of cross-sectional imaging, improved endoscopic screening, and the indolent nature of the disease. Up to 35% of patients have symptoms at the time of diagnosis, whereas the others have occult disease. Neuroendocrine tumors are a diverse group of malignancies with unique clinical courses. This article critically reviews the most important randomized controlled trials for neuroendocrine tumors and introduces a few awaiting completion...
October 2017: Surgical Oncology Clinics of North America
https://www.readbyqxmd.com/read/28923188/poor-sleep-moderates-the-relationship-between-daytime-napping-and-inflammation-in-black-and-white-men
#17
Karen P Jakubowski, Jennifer M Boylan, Jenny M Cundiff, Karen A Matthews
OBJECTIVES: To test whether napping was associated with 2 inflammatory markers with known relationships to cardiovascular disease: high-sensitivity C-reactive protein (hsCRP) and interleukin-6 (IL-6). Because IL-6 is known to impact central inflammatory processes that relate to sleep regulation, including subjective fatigue, we tested whether this relationship was moderated by sleep duration, sleep efficiency, and self-reported sleep quality. DESIGN: Cross-sectional...
October 2017: Sleep Health
https://www.readbyqxmd.com/read/28923107/food-choice-motives-including-sustainability-during-purchasing-are-associated-with-a-healthy-dietary-pattern-in-french-adults
#18
B Allès, S Péneau, E Kesse-Guyot, J Baudry, S Hercberg, C Méjean
BACKGROUND: Sustainability has become a greater concern among consumers that may influence their dietary intake. Only a few studies investigated the relationship between sustainable food choice motives and diet and they focused on specific food groups. OBJECTIVE: This cross-sectional study aimed to assess the associations between food choice motives during purchasing, with a focus on sustainability, and dietary patterns in a large sample of French adults. DESIGN: Food choice motives were collected in 31,842 adults from the NutriNet-Santé study, using a validated 63 items questionnaire gathered into 9 dimension scores: ethics and environment, traditional and local production, taste, price, environmental limitation (i...
September 18, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28923064/investigating-the-importance-of-the-local-food-environment-for-fruit-and-vegetable-intake-in-older-men-and-women-in-20-uk-towns-a-cross-sectional-analysis-of-two-national-cohorts-using-novel-methods
#19
S Hawkesworth, R J Silverwood, B Armstrong, T Pliakas, K Nanchahal, C Sartini, A Amuzu, G Wannamethee, J Atkins, S E Ramsay, J P Casas, R W Morris, P H Whincup, Karen Lock
BACKGROUND: Local neighbourhood environments can influence dietary behavior. There is limited evidence focused on older people who are likely to have greater dependence on local areas and may suffer functional limitations that amplify any neighbourhood impact. METHODS: Using multi-level ordinal regression analysis we investigated the association between multiple dimensions of neighbourhood food environments (captured by fine-detail, foot-based environmental audits and secondary data) and self-reported frequency of fruit and vegetable intake...
September 18, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28923007/patients-beliefs-regarding-informed-consent-for-low-risk-pragmatic-trials
#20
Rafael Dal-Ré, Antonio J Carcas, Xavier Carné, David Wendler
BACKGROUND: The requirement to obtain written informed consent may undermine the potential of pragmatic randomized clinical trials (pRCTs) to improve evidence-based care. This requirement could compromise trials statistical power or even force it to close them down prematurely. However, recent data from the U.S. and Spain suggest that a majority of the public endorses written consent for low-risk pRCTs. The present manuscript assesses whether this view is shared by patients. METHODS: This was a cross-sectional, probability-based survey, with a 2 × 2 factorial design, assessing support for written informed consent versus verbal consent or general notification for two low-risk pRCTs in hypertension, one comparing 2 drugs with similar risk/benefit profiles and the other comparing the same drug being taken in the morning or at night...
September 18, 2017: BMC Medical Research Methodology
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