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Rohan lewis

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https://www.readbyqxmd.com/read/29566206/actissist-proof-of-concept-trial-of-a-theory-driven-digital-intervention-for-psychosis
#1
Sandra Bucci, Christine Barrowclough, John Ainsworth, Matthew Machin, Rohan Morris, Katherine Berry, Richard Emsley, Shon Lewis, Dawn Edge, Iain Buchan, Gillian Haddock
Background: Timely access to intervention for psychosis is crucial yet problematic. As such, health care providers are forming digital strategies for addressing mental health challenges. A theory-driven digital intervention that monitors distressing experiences and provides real-time active management strategies could improve the speed and quality of recovery in psychosis, over and above conventional treatments. This study assesses the feasibility and acceptability of Actissist, a digital health intervention grounded in the cognitive model of psychosis that targets key early psychosis domains...
March 16, 2018: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29440632/detecting-rna-base-methylations-in-single-cells-by-in-situ-hybridization
#2
Rohan T Ranasinghe, Martin R Challand, Kristina A Ganzinger, Benjamin W Lewis, Charlotte Softley, Wolfgang H Schmied, Mathew H Horrocks, Nadia Shivji, Jason W Chin, James Spencer, David Klenerman
Methylated bases in tRNA, rRNA and mRNA control a variety of cellular processes, including protein synthesis, antimicrobial resistance and gene expression. Currently, bulk methods that report the average methylation state of ~104 -107 cells are used to detect these modifications, obscuring potentially important biological information. Here, we use in situ hybridization of Molecular Beacons for single-cell detection of three methylations (m6 2 A, m1 G and m3 U) that destabilize Watson-Crick base pairs. Our method-methylation-sensitive RNA fluorescence in situ hybridization-detects single methylations of rRNA, quantifies antibiotic-resistant bacteria in mixtures of cells and simultaneously detects multiple methylations using multicolor fluorescence imaging...
February 13, 2018: Nature Communications
https://www.readbyqxmd.com/read/29413366/relative-impairments-in-hemodynamic-exercise-reserve-parameters-in-heart-failure-with-preserved-ejection-fraction-a-study-level-pooled-analysis
#3
Ambarish Pandey, Rohan Khera, Bryan Park, Mark Haykowsky, Barry A Borlaug, Gregory D Lewis, Dalane W Kitzman, Javed Butler, Jarett D Berry
OBJECTIVES: The aim of this study was to compare the relative impairment in different exercise hemodynamic reserve parameters in patients with heart failure with preserved ejection fraction (HFpEF) and control patients using a study-level meta-analysis. BACKGROUND: A cardinal manifestation of chronic HFpEF is severely decreased exercise capacity. Developing effective therapies for exercise intolerance in HFpEF requires optimal understanding of the factors underlying exercise intolerance...
February 2018: JACC. Heart Failure
https://www.readbyqxmd.com/read/29377190/human-placental-oxygenation-in-late-gestation-experimental-and-theoretical-approaches
#4
Gareth A Nye, Emma Ingram, Edward D Johnstone, Oliver E Jensen, Henning Schneider, Rohan M Lewis, Igor L Chernyavsky, Paul Brownbill
The placenta is crucial for life. It is an ephemeral but complex organ acting as the barrier interface between maternal and fetal circulations, providing exchange of gases, nutrients, hormones, waste products and immunoglobulins. Many gaps exist in our understanding of the detailed placental structure and function, particularly in relation to oxygen handling and transfer in healthy and pathological states in utero. Measurements to understand oxygen transfer in vivo in the human are limited, with no general agreement on the most appropriate methods...
January 26, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29273272/ifpa-meeting-2017-workshop-report-clinical-placentology-3d-structure-based-modeling-of-placental-function-placental-bed-and-treating-placental-dysfunction
#5
Ganesh Acharya, John Aplin, Paul Brownbill, Judith Bulmer, Graham Burton, Larry Chamley, Igor Chernyavsky, Alys Clark, Sally Collins, Elizabeth Cottrell, Mark Dilworth, David Elad, Marcel Filoche, Natalie Hannan, Alexander E P Heazell, Oliver Jensen, Edward D Johnstone, Lopa Leach, Rohan Lewis, Terry Morgan, Jenny Myers, Gareth Nye, Michelle Oyen, Carolyn Salafia, Henning Schneider, Perrie O'Tierney-Ginn
Workshops are an important part of the IFPA annual meeting as they allow for discussion of specialized topics. At IFPA meeting 2017 there were four themed workshops, all of which are summarized in this report. These workshops discussed new knowledge and technological innovations in the following areas of research: 1) placental bed; 2) 3D structural modeling; 3) clinical placentology; 4) treatment of placental dysfunction.
December 15, 2017: Placenta
https://www.readbyqxmd.com/read/29206689/placental-fatty-acid-transfer
#6
Rohan M Lewis, Christian Wadsack, Gernot Desoye
PURPOSE OF REVIEW: This review outlines recent advances in placental lipid transport in relation to maternal metabolic status and pregnancy outcome. A particular focus of this review will be on the way these findings may influence our understanding of placental transfer of the essential fatty acid docosahexaenoic acid (DHA) which is crucial for fetal neurodevelopment and of lipid transfer as a predisposing factor for childhood obesity. RECENT FINDINGS: Placental metabolism may determine the quantity and composition of fatty acids delivered to the fetus...
March 2018: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29195081/corrigendum-to-klinefelter-s-syndrome-47-xxy-is-in-excess-among-men-with-sj%C3%A3-gren-s-syndrome-clin-immunol-168-2016-25-29
#7
Valerie M Harris, Rohan Sharma, Joshua Cavett, Biji T Kurien, Ke Liu, Kristi A Koelsch, Astrid Rasmussen, Lida Radfar, David Lewis, Donald U Stone, C Erick Kaufman, Shibo Li, Barbara Segal, Daniel J Wallace, Michael H Weisman, Swamy Venuturupalli, Jennifer A Kelly, Marta E Alarcon-Riquelme, Bernardo Pons-Estel, Roland Jonsson, Xianglan Lu, Jacques-Eric Gottenberg, Juan-Manuel Anaya, Deborah S Cunninghame-Graham, Andrew J W Huang, Michael T Brennan, Pamela Hughes, Ilias Alevizos, Corinne Miceli-Richard, Edward C Keystone, Vivian P Bykerk, Gideon Hirschfield, Gang Xie, Katherine A Siminovitch, Wan-Fai Ng, Gunnel Nordmark, Sara Magnusson Bucher, Per Eriksson, Roald Omdal, Nelson L Rhodus, Maureen Rischmueller, Michael Rohrer, Marie Wahren-Herlenius, Torsten Witte, Xavier Mariette, Christopher J Lessard, John B Harley, Kathy L Sivils, R Hal Scofield
No abstract text is available yet for this article.
February 2018: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29190337/optimizing-research-to-speed-up-availability-of-pediatric-antiretroviral-drugs-and-formulations
#8
Martina Penazzato, Devasena Gnanashanmugam, Pablo Rojo, Marc Lallemant, Linda L Lewis, Francesca Rocchi, Agnes Saint Raymond, Nathan Ford, Rohan Hazra, Carlo Giaquinto, Yodit Belew, Diana M Gibb, Elaine J Abrams
Globally 1.8 million children are living with human immunodeficiency virus (HIV), yet only 51% of those eligible actually start treatment. Research and development (R&D) for pediatric antiretrovirals (ARVs) is a lengthy process and lags considerably behind drug development in adults. Providing safe, effective, and well-tolerated drugs for children remains critical to ensuring scale-up globally. We review current approaches to R&D for pediatric ARVs and suggest innovations to enable simplified, faster, and more comprehensive strategies to develop optimal formulations...
June 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29161409/transfer-and-metabolism-of-cortisol-by-the-isolated-perfused-human-placenta
#9
Laura I Stirrat, Bram G Sengers, Jane E Norman, Natalie Z M Homer, Ruth Andrew, Rohan M Lewis, Rebecca M Reynolds
Context: Fetal overexposure to glucocorticoids in utero is associated with fetal growth restriction and is postulated to be a key mechanism linking suboptimal fetal growth with cardiovascular disease in later life. Objective: To develop a model to predict maternal-fetal glucocorticoid transfer. We hypothesized placental 11-β-hydroxysteroid dehydrogenase-type 2 (11β-HSD2) would be the major rate-limiting step in maternal cortisol transfer to the fetus. Design: We used a deuterated cortisol tracer in the ex vivo placental perfusion model, in combination with computational modeling, to investigate the role of interconversion of cortisol and its inactive metabolite cortisone on transfer of cortisol from mother to fetus...
February 1, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28714092/serial-block-face-scanning-electron-microscopy-of-erythrocytes-protruding-through-the-human-placental-syncytiotrophoblast
#10
Eleni Palaiologou, Patricia Goggin, David S Chatelet, Emma M Lofthouse, Christopher Torrens, Bram G Sengers, Jane K Cleal, Anton Page, Rohan M Lewis
The syncytiotrophoblast forms a continuous barrier between the maternal and fetal circulations. Here we present a serial block-face scanning electron microscopy (SBFSEM) study, based on a single image stack, showing pooling of fetal blood underneath a region of stretched syncytiotrophoblast that has become detached from the basement membrane. Erythrocytes are protruding from discrete holes in the syncytiotrophoblast suggesting that, under specific circumstances, the syncytiotrophoblast may be permeable to fetal cells...
October 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28692793/rare-x-chromosome-abnormalities-in-systemic-lupus-erythematosus-and-sj%C3%A3-gren-s-syndrome
#11
Rohan Sharma, Valerie M Harris, Joshua Cavett, Biji T Kurien, Ke Liu, Kristi A Koelsch, Anum Fayaaz, Kaustubh S Chaudhari, Lida Radfar, David Lewis, Donald U Stone, C Erick Kaufman, Shibo Li, Barbara Segal, Daniel J Wallace, Michael H Weisman, Swamy Venuturupalli, Jennifer A Kelly, Bernardo Pons-Estel, Roland Jonsson, Xianglan Lu, Jacques-Eric Gottenberg, Juan-Manuel Anaya, Deborah S Cunninghame-Graham, Andrew J W Huang, Michael T Brennan, Pamela Hughes, Ilias Alevizos, Corinne Miceli-Richard, Edward C Keystone, Vivian P Bykerk, Gideon Hirschfield, Gunnel Nordmark, Sara Magnusson Bucher, Per Eriksson, Roald Omdal, Nelson L Rhodus, Maureen Rischmueller, Michael Rohrer, Marie Wahren-Herlenius, Torsten Witte, Marta Alarcón-Riquelme, Xavier Mariette, Christopher J Lessard, John B Harley, Wan-Fai Ng, Astrid Rasmussen, Kathy L Sivils, R Hal Scofield
OBJECTIVE: Sjögren's syndrome (SS) and systemic lupus erythematosus (SLE) are related by clinical and serologic manifestations as well as genetic risks. Both diseases are more commonly found in women than in men, at a ratio of ~10 to 1. Common X chromosome aneuploidies, 47,XXY and 47,XXX, are enriched among men and women, respectively, in either disease, suggesting a dose effect on the X chromosome. METHODS: We examined cohorts of SS and SLE patients by constructing intensity plots of X chromosome single-nucleotide polymorphism alleles, along with determining the karyotype of selected patients...
November 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28646147/whole-organ-vascular-casting-and-microct-examination-of-the-human-placental-vascular-tree-reveals-novel-alterations-associated-with-pregnancy-disease
#12
Toluwalope O Junaid, Robert S Bradley, Rohan M Lewis, John D Aplin, Edward D Johnstone
Experimental methods that allow examination of the intact vascular network of large organs, such as the human placenta are limited, preventing adequate comparison of normal and abnormal vascular development in pregnancy disease. Our aims were (i) to devise an effective technique for three-dimensional analyses of human placental vessels; (ii) demonstrate the utility of the technique in the comparison of placental vessel networks in normal and fetal growth restriction (FGR) complicated pregnancies. Radiopaque plastic vessel networks of normal and FGR placentas (n = 12/group) were created by filling the vessels with resin and corroding the surrounding tissues...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28301855/placental-lipid-and-fatty-acid-transfer-in-maternal-overnutrition
#13
REVIEW
Rohan M Lewis, Gernot Desoye
BACKGROUND: The increasing incidence of childhood obesity is a significant public health challenge, the consequences of which extend across the life course. SUMMARY: Diet and exercise are clearly the major contributors to childhood obesity, but the factors predisposing to obesity may become established in the womb. Worryingly maternal overnutrition, in particular when it leads to obesity and diabetes, perpetuate an intergenerational cycle of obesity through its effects on placental function and fetal metabolism...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28229827/anti-la-positive-anti-ro-negative-subset-of-primary-sj%C3%A3-gren-s-syndrome-anti-la-is-a-reality-but-is-the-disease
#14
Debashish Danda, Rohan Sharma, Dat Truong, Kristi A Koelsch, Biji T Kurien, Harini Bagavant, Umesh Deshmukh, C Erick Kaufman, David M Lewis, Donald U Stone, Lida Radfar, Astrid Rasmussen, Kathy L Sivils, Robert H Scofield
OBJECTIVES: To characterise the serological and clinical findings in primary Sjögren's syndrome in which anti-La was found without anti-Ro. We hypothesised that a significant portion of these are falsely negative for anti-Ro60. METHODS: Twenty-nine sera from primary Sjögren's syndrome patients were tested for antibodies directed against La and Ro. Anti-La was detected using bovine La treated with or without DNAase and RNAase to identify potential false positivity...
May 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27913585/the-influence-of-placental-metabolism-on-fatty-acid-transfer-to-the-fetus
#15
Simone Perazzolo, Birgit Hirschmugl, Christian Wadsack, Gernot Desoye, Rohan M Lewis, Bram G Sengers
The factors determining fatty acid transfer across the placenta are not fully understood. This study used a combined experimental and computational modeling approach to explore placental transfer of nonesterified fatty acids and identify the rate-determining processes. Isolated perfused human placenta was used to study the uptake and transfer of 13 C-fatty acids and the release of endogenous fatty acids. Only 6.2 ± 0.8% of the maternal 13 C-fatty acids taken up by the placenta was delivered to the fetal circulation...
February 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/27820656/insulinlike-growth-factor-binding-protein-1-and-ghrelin-predict-health-outcomes-among-older-adults-cardiovascular-health-study-cohort
#16
Robert C Kaplan, Garrett Strizich, Chino Aneke-Nash, Clara Dominguez-Islas, Petra Bužková, Howard Strickler, Thomas Rohan, Michael Pollak, Lewis Kuller, Jorge R Kizer, Anne Cappola, Christopher I Li, Bruce M Psaty, Anne Newman
Context: Multiple diseases may explain the association of the growth hormone/insulinlike growth factor-I (GH/IGF-I) axis with longevity. Objective: To relate circulating GH/IGF-I system protein levels with major health events. Design and Setting: This is a cohort study set in 4 US communities. Participants: Adults (N = 2268) 65 years and older free of diabetes and cardiovascular disease. Measurements: We assessed insulinlike growth factor binding protein-1 (IGFBP-1) and ghrelin in fasting and 2-hour oral glucose tolerance test (OGTT) blood samples, as well as fasting IGF-I and IGFBP-3...
January 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27678346/shared-and-distinct-patterns-of-oligodendroglial-response-in-%C3%AE-synucleinopathies-and-tauopathies
#17
Zdenek Rohan, Ivan Milenkovic, Mirjam I Lutz, Radoslav Matej, Gabor G Kovacs
Pathological protein deposits in oligodendroglia are common but variable features of various neurodegenerative conditions. To evaluate oligodendrocyte response in neurodegenerative diseases (NDDs) with different extents of oligodendroglial protein deposition we performed immunostaining for tubulin polymerization-promoting protein p25α (TPPP/p25α), α-synuclein (α-syn), phospho-tau, ubiquitin, myelin basic protein, and the microglial marker HLA-DR. We investigated cases of multiple system atrophy ([MSA] n = 10), Lewy body disease ([LBD] n = 10), globular glial tauopathy ([GGT] n = 7) and progressive supranuclear palsy ([PSP] n = 10)...
December 1, 2016: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/27327862/a-randomized-trial-assessing-the-impact-of-three-different-glycoprotein-iib-iiia-antagonists-on-glycoprotein-iib-iiia-platelet-receptor-inhibition-and-clinical-endpoints-in-patients-with-acute-coronary-syndromes
#18
RANDOMIZED CONTROLLED TRIAL
Lewis E Holmes, Rohan Gupta, Saissan Rajendran, John Luu, John K French, Craig P Juergens
AIMS: To compare three glycoprotein IIb/IIIa receptor antagonists (GPIs) in terms of platelet inhibition and major adverse cardiac events (MACEs), and assess the rate of bleeding and MACEs between GPIs and coadministered P2Y12 agents. METHODS: Eighty-three acute coronary syndrome (ACS) patients undergoing percutaneous coronary intervention (PCI) with planned GPI use were randomized to receive high-dose bolus tirofiban, double-bolus eptifibatide, or abciximab followed by a 12-hour infusion...
October 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/27197275/serum-estrogens-and-estrogen-metabolites-and-endometrial-cancer-risk-among-postmenopausal-women
#19
Louise A Brinton, Britton Trabert, Garnet L Anderson, Roni T Falk, Ashley S Felix, Barbara J Fuhrman, Margery L Gass, Lewis H Kuller, Ruth M Pfeiffer, Thomas E Rohan, Howard D Strickler, Xia Xu, Nicolas Wentzensen
BACKGROUND: Although endometrial cancer is clearly influenced by hormonal factors, few epidemiologic studies have investigated the role of endogenous estrogens or especially estrogen metabolites. METHODS: We conducted a nested case-control study within the Women's Health Initiative Observational Study (WHI-OS), a cohort of 93,676 postmenopausal women recruited between 1993 and 1998. Using baseline serum samples from women who were non-current hormone users with intact uteri, we measured 15 estrogens/estrogen metabolites via HPLC/MS-MS among 313 incident endometrial cancer cases (271 type I, 42 type II) and 354 matched controls, deriving adjusted ORs and 95% confidence intervals (CI) for overall and subtype-specific endometrial cancer risk...
July 2016: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/27109640/klinefelter-s-syndrome-47-xxy-is-in-excess-among-men-with-sj%C3%A3-gren-s-syndrome
#20
MULTICENTER STUDY
Valerie M Harris, Rohan Sharma, Joshua Cavett, Biji T Kurien, Ke Liu, Kristi A Koelsch, Astrid Rasmussen, Lida Radfar, David Lewis, Donald U Stone, C Erick Kaufman, Shibo Li, Barbara Segal, Daniel J Wallace, Michael H Weisman, Swamy Venuturupalli, Jennifer A Kelly, Marta E Alarcon-Riquelme, Bernardo Pons-Estel, Roland Jonsson, Xianglan Lu, Jacques-Eric Gottenberg, Juan-Manuel Anaya, Deborah S Cunninghame-Graham, Andrew J W Huang, Michael T Brennan, Pamela Hughes, Ilias Alevizos, Corinne Miceli-Richard, Edward C Keystone, Vivian P Bykerk, Gideon Hirschfield, Gang Xie, Wan-Fai Ng, Gunnel Nordmark, Sara Magnusson Bucher, Per Eriksson, Roald Omdal, Nelson L Rhodus, Maureen Rischmueller, Michael Rohrer, Marie Wahren-Herlenius, Torsten Witte, Xavier Mariette, Christopher J Lessard, John B Harley, Kathy L Sivils, R Hal Scofield
Primary Sjögren's syndrome (pSS) has a strong female bias. We evaluated an X chromosome dose effect by analyzing 47,XXY (Klinefelter's syndrome, 1 in 500 live male births) among subjects with pSS. 47,XXY was determined by examination of fluorescence intensity of single nucleotide polymorphisms from the X and Y chromosomes. Among 136 pSS men there were 4 with 47,XXY. This was significantly different from healthy controls (1 of 1254 had 47,XXY, p=0.0012 by Fisher's exact test) as well men with rheumatoid arthritis (0 of 363 with 47,XXY), but not different compared to men with systemic lupus erythematosus (SLE) (4 of 136 versus 8 of 306, Fisher's exact test p=NS)...
July 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
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