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Emily Wonder, Lorena Simón-Gracia, Pablo Scodeller, Ramsey N Majzoub, Venkata Ramana Kotamraju, Kai K Ewert, Tambet Teesalu, Cyrus R Safinya
Cationic liposome-nucleic acid (CL-NA) complexes, which form spontaneously, are a highly modular gene delivery system. These complexes can be sterically stabilized via PEGylation [PEG: poly (ethylene glycol)] into nanoparticles (NPs) and targeted to specific tissues and cell types via the conjugation of an affinity ligand. However, there are currently no guidelines on how to effectively navigate the large space of compositional parameters that modulate the specific and nonspecific binding interactions of peptide-targeted NPs with cells...
March 2, 2018: Biomaterials
Hong Duan, Luis F de Navas, Fuqu Hu, Kailiang Sun, Yannis E Mavromatakis, Kayla Viets, Cyrus Zhou, Joshua Kavaler, Robert J Johnston, Andrew Tomlinson, Eric C Lai
Photoreceptors in the crystalline Drosophila eye are recruited by receptor tyrosine kinase (RTK)/Ras signaling, mediated by the Epidermal Growth Factor receptor (EGFR) and Sevenless receptor. Analyses of an allelic deletion series of the mir-279/996 locus, along with a panel of modified genomic rescue transgenes, show that normal Drosophila eye patterning depends on both miRNAs. Transcriptional reporter and activity sensor transgenes reveal expression and function of miR-279/996 in non-neural cells of the developing eye...
March 14, 2018: Development
Roshanak Alialy, Sasan Tavakkol, Elham Tavakkol, Amir Ghorbani-Aghbologhi, Alireza Ghaffarieh, Seon Ho Kim, Cyrus Shahabi
The advent of the digital pathology has introduced new avenues of diagnostic medicine. Among them, crowdsourcing has attracted researchers' attention in the recent years, allowing them to engage thousands of untrained individuals in research and diagnosis. While there exist several articles in this regard, prior works have not collectively documented them. We, therefore, aim to review the applications of crowdsourcing in human pathology in a semi-systematic manner. We first, introduce a novel method to do a systematic search of the literature...
2018: Journal of Pathology Informatics
Naoya Yamaguchi, Shinya Anraku, Erwan Paineau, Cyrus R Safinya, Patrick Davidson, Laurent J Michot, Nobuyoshi Miyamoto
Exploring the interaction of nucleic acids with clay minerals is important to understand such issues as the persistence in soils of biomolecules and the appearance of genetic polymers in prebiotic environments. Colloidal dispersions of double stranded DNA and clay nanosheets may also provide interesting model systems to study the statistical physics of mixtures of semi-flexible rods and plates. Here, we show that adding very small amounts of DNA to liquid-crystalline montmorillonite and beidellite smectite clay suspensions strongly widens the isotropic/nematic phase coexistence region...
March 12, 2018: Scientific Reports
Christine M Embury, Alex I Wiesman, Amy L Proskovec, Elizabeth Heinrichs-Graham, Timothy J McDermott, Grace H Lord, Kaitlin L Brau, Andjela T Drincic, Cyrus V Desouza, Tony W Wilson
It is now generally accepted that diabetes increases the risk for cognitive impairment, but the precise mechanisms are poorly understood. A critical problem in linking diabetes to cognitive impairment is that patients often have multiple comorbidities (e.g., obesity, hypertension) that have been independently linked to cognitive deficits. Herein, we focus on young adults with and without type 1 diabetes who were virtually free of such comorbidities. The two groups were matched on major health and demographic factors, and all participants completed a verbal working memory task during magnetoencephalographic (MEG) brain imaging...
March 12, 2018: Diabetes
Steven Ger Nyanjom, Cyrus Tare, Fred Wamunyokoli, George Fredrick Obiero
Tsetse flies (Glossina) are vectors of African trypanosomiasis. Olfaction plays a critical role in Glossina behavior, including larviposition, feeding, and reproduction. Odorant receptors (ORs) are important in insect chemoreception as they bind volatile odorants and transport them to olfactory receptor neurons to elicit behavioral response. To better understand Glossina chemoreception, we used quantitative polymerase chain reaction to examine the expression levels of ORs in female and male Glossina morsitans morsitans Wiedemann, 1850 (Diptera: Glossinidae) antennae and legs...
February 26, 2018: Journal of Medical Entomology
Cyrus Jahansouz, Christopher Staley, Scott Kizy, Hongliang Xu, Ann V Hertzel, Jessi Coryell, Stephanie Singroy, Matthew Hamilton, Meri DuRand, David A Bernlohr, Michael J Sadowsky, Alexander Khoruts, Sayeed Ikramuddin
OBJECTIVE: The aim of this study was to test whether the perioperative composition of intestinal microbiota can contribute to variable outcomes following vertical sleeve gastrectomy (VSG). SUMMARY OF BACKGROUND DATA: Although bariatric surgery is the most effective treatment for obesity, metabolic outcomes are variable. METHODS: Diet-induced obese mice were randomized to VSG or sham surgery, with or without exposure to antibiotics that selectively suppress mainly gram-positive (fidaxomicin, streptomycin) or gram-negative (ceftriaxone) bacteria on postoperative days (POD) 1-4...
March 8, 2018: Annals of Surgery
Ilse Bloom, Calum Shand, Cyrus Cooper, Sian Robinson, Janis Baird
The increasing recognition of sarcopenia, the age-related loss of skeletal muscle mass and function (muscle strength and physical performance), as a determinant of poor health in older age, has emphasized the importance of understanding more about its aetiology to inform strategies both for preventing and treating this condition. There is growing interest in the effects of modifiable factors such as diet; some nutrients have been studied but less is known about the influence of overall diet quality on sarcopenia...
March 5, 2018: Nutrients
Parth Bhatt, Achint Patel, Varun Kumar, Anusha Lekshminarayanan, Viranchi Patel, Srilatha Alapati, Zeenia Cyrus Billimoria
BACKGROUND: We investigated the effect of hospital volume on percutaneous closure of atrial septal defect/patent foramen ovale (ASD) among pediatric patients. METHODS: We identified patients undergoing percutaneous closure of ASD with device using International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) procedure code 35.52 from the National Inpatient Sample, years 2002-2011. Patients with age ≤ 18 years and primary diagnosis code 745...
March 5, 2018: World Journal of Pediatrics: WJP
Roger Sun, Ines Koubaa, Elaine Johanna Limkin, Isabelle Dumas, Enrica Bentivegna, Eduardo Castanon, Sébastien Gouy, Cynthia Baratiny, Fyo Monnot, Pierre Maroun, Samy Ammari, Elise Zareski, Corinne Balleyguier, Éric Deutsch, Philippe Morice, Christine Haie-Meder, Cyrus Chargari
Objective: We report outcomes of cervical cancer patients with bladder invasion (CCBI) at diagnosis, with focus on the incidence and predictive factors of vesicovaginal fistula (VVF). Results: Seventy-one patients were identified. Twenty-one (30%) had para-aortic nodal involvement. Eight had VVF at diagnosis. With a mean follow-up time of 34.2 months (range: 1.9 months-14.8 years), among 63 patients without VVF at diagnosis, 15 (24%) developed VVF. A VVF occurred in 19% of patients without local relapses (9/48) and 40% of patients with local relapse (6/15)...
February 6, 2018: Oncotarget
Mark Warner, Cyrus Mostajeran
We solve the forward and inverse problems associated with the transformation of flat sheets with circularly symmetric director fields to surfaces of revolution with non-trivial topography, including Gaussian curvature, without a stretch elastic cost. We deal with systems slender enough to have a small bend energy cost. Shape change is induced by light or heat causing contraction along a non-uniform director field in the plane of an initially flat nematic sheet. The forward problem is, given a director distribution, what shape is induced? Along the way, we determine the Gaussian curvature and the evolution with induced mechanical deformation of the director field and of material curves in the surface (proto-radii) that will become radii in the final surface...
February 2018: Proceedings. Mathematical, Physical, and Engineering Sciences
M D Cyrus Oster, M D Theodore Stein, M D Sumire Kitahara, M D Serhan Alkan, Qin Huang
Primary effusion lymphoma (PEL) is a distinct clinicopathologic entity usually characterized by presentation as a lymphomatous body cavity effusion in the absence of solid tumor mass or dissemination during its clinical course. PEL can also rarely occur as a solid lymphoma involving nodal and extranodal sites and is referred to as extracavitary PEL. Here we report a unique case of extracavitary PEL in a 49year-old HIV-seropositive patient, who presented with vague abdominal pain and 20 pound weight loss. Esophagogastroduodenoscopy and colonoscopy revealed >100 broad based intestinal polyps ranging from 2 mm to 3cm in size, spreading from the duodenum to the rectum as a typical impression of "intestinal polyposis syndrome"...
March 2, 2018: Human Pathology
Patricia Aguilar-Calvo, Cyrus Bett, Alejandro M Sevillano, Timothy D Kurt, Jessica Lawrence, Katrin Soldau, Per Hammarström, K Peter R Nilsson, Christina J Sigurdson
Prion aggregates typically spread into the central nervous system (CNS), likely via peripheral nerves. Yet prion conformers differ in their capacity to penetrate the CNS; certain fibrillar prions replicate persistently in lymphoid tissues with no CNS entry, leading to chronic silent carriers. Subclinical carriers of variant Creutzfeldt-Jakob (vCJD) prions in the United Kingdom have been estimated at 1:2000, and vCJD prions have been transmitted through blood transfusion, however the circulating prion conformers that neuroinvade remain unclear...
March 5, 2018: Brain Pathology
Elena Cyrus, Diana M Sheehan, Kristopher Fennie, Mariana Sanchez, Christyl T Dawson, Marsha Cameron, Lorene Maddox, Mary Jo Trepka
Prompt HIV diagnosis decreases the risk of HIV transmission and improves health outcomes. The study objective was to examine rates of delayed HIV diagnosis among non-Latino Black Caribbean immigrants in Florida. The sample included 39,008 Black HIV-positive individuals, aged 13 or older from the Caribbean and the mainland U.S. Delayed HIV diagnosis was defined as AIDS diagnosis within three months of HIV diagnosis. After adjusting for demographic factors, year of HIV diagnosis, transmission mode, neighborhood level socioeconomic status, and rural-urban residence, a disparity persisted for Caribbean-born Blacks in the Bahamas and Haiti compared with U...
2018: Journal of Health Care for the Poor and Underserved
Elisa J de Koning, Erik J Timmermans, Natasja M van Schoor, Brendon Stubbs, Tessa N van den Kommer, Elaine M Dennison, Federica Limongi, Maria Victoria Castell, Mark H Edwards, Rocio Queipo, Cyrus Cooper, Paola Siviero, Suzan van der Pas, Nancy L Pedersen, Mercedes Sánchez-Martínez, Dorly J H Deeg, Michael D Denkinger
Pain is a key symptom of Osteoarthritis (OA) and has been linked to poor mental health. Pain fluctuates over time within individuals, but a paucity of studies have considered day-to-day fluctuations of joint pain in relation to affective symptoms in older persons with OA. This study investigated the relationship of both pain severity and within-person pain variability with anxiety and depression symptoms in 832 older adults with OA who participated in the European Project on OSteoArthritis (EPOSA): a six-country cohort study...
February 26, 2018: Journal of Pain: Official Journal of the American Pain Society
Klara Morsley, Anne Miller, Raashid Luqmani, Francesc Fina-Aviles, Muhammad Kassim Javaid, Christopher J Edwards, Rafael Pinedo-Villanueva, Manuel Medina, Sebastian Calero, Cyrus Cooper, Nigel Arden, Daniel Prieto-Alhambra
OBJECTIVE: Rheumatoid factor (RF) testing is used in primary care in the diagnosis of rheumatoid arthritis (RA); however a positive RF may occur without RA. Incorrect use of RF testing may lead to increased costs and delayed diagnoses. The aim was to assess the performance of RF as a test for RA and to estimate the costs associated with its use in a primary care setting. MATERIAL AND METHODS: A retrospective cohort study using the Information System for the Development of Research in Primary Care database (contains primary care records and laboratory results of >80% of the Catalonian population, Spain)...
February 26, 2018: Reumatología Clinica
Geoffroy Canlorbe, Cyril Touboul, Cyrus Chargari, Enrica Bentivegna, Amandine Maulard, Patricia Pautier, Catherine Genestie, Philippe Morice, Sébastien Gouy
AIM: To evaluate the influence on relapse-free survival (RFS) and overall survival (OS) of a transitory protective stoma (TPS) at the time of complete cytoreductive surgery for advanced-stage ovarian cancer. PATIENTS AND METHODS: From our Institution, we retrospectively selected patients from 2006 to 2011 with ovarian cancer with the following criteria: stage IIIB to IVA (pleural effusion) according to the International Federation of Gynaecology and Obstetrics classification; complete cytoreductive surgery (CC0 according to Sugarbaker's classification); and a low anterior resection...
March 2018: Anticancer Research
Simone Schadt, Bojan Bister, Swapan K Chowdhury, Christoph Funk, Cornelis E C A Hop, W Griffith Humphreys, Fumihiko Igarashi, Alexander D James, Mark Kagan, S Cyrus Khojasteh, Angus N R Nedderman, Chandra Prakash, Frank Runge, Holger Scheible, Douglas K Spracklin, Piet Swart, Susanna Tse, Josh Yuan, R Scott Obach
Since the introduction of MIST guidance by FDA in 2008 there have been major changes in the experimental methods for the identification and quantification of metabolites, ways to evaluate coverage of metabolites, and the timing of critical clinical and non-clinical studies to generate these information. In this cross-industry article we discuss how the increased focus on human drug metabolites and their potential contribution to safety and drug-drug interactions has influenced the approaches taken by industry for the identification and quantitation of human drug metabolites...
February 27, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Mohamad Z Saltagi, Cyrus C Rabbani, Jonathan Y Ting, Thomas S Higgins
BACKGROUND: Interest in the pathophysiology and management of phantom smells has increased rapidly over the last decade. A PubMed search for the term "phantosmia" demonstrated a near-doubling of articles published on phantosmia within the past 7 years. We aimed to systematically review the literature on the management of phantosmia. METHODS: The PubMed, EMBASE, and Cochrane databases were searched for articles published since January 1990, using terms combined with pertinent Boolean search operators...
February 27, 2018: International Forum of Allergy & Rhinology
Eugene McCloskey, Helena Johansson, Nicholas C Harvey, Lee Shepstone, Elizabeth Lenaghan, Ric Fordham, Ian Harvey, Amanda Howe, Cyrus Cooper, Shane Clarke, Neil Gittoes, Alison Heawood, Richard Holland, Tarnya Marshall, Terence W O'Neill, Tim J Peters, Niamh Redmond, David Torgerson, John A Kanis
The SCreening for Osteoporosis in Older women for the Prevention of fracture [SCOOP] study was a community-based screening intervention, in women aged 70 to 85 years in the UK. In the screening arm, licensed osteoporosis treatments were recommended in women identified to be at high risk of hip fracture using the FRAX risk assessment tool (including BMD measurement). In the control arm, standard care was provided. Screening led to a 28% reduction in hip fractures over 5 years. In this planned post hoc analysis, we wished to examine for interactions between screening effectiveness on fracture outcome (any, osteoporotic and hip fractures) on the one hand and baseline FRAX 10-year probability of hip fracture on the other...
February 26, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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