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https://www.readbyqxmd.com/read/28087602/novel-application-of-3d-contrast-enhanced-cmr-to-define-fibrotic-structure-of-the-human-sinoatrial-node-in-vivo
#1
Thomas A Csepe, Jichao Zhao, Lidiya V Sul, Yufeng Wang, Brian J Hansen, Ning Li, Anthony J Ignozzi, Anna Bratasz, Kimerly A Powell, Ahmet Kilic, Peter J Mohler, Paul M L Janssen, John D Hummel, Orlando P Simonetti, Vadim V Fedorov
AIMS: The adult human sinoatrial node (SAN) has a specialized fibrotic intramural structure (35-55% fibrotic tissue) that provides mechanical and electrical protection from the surrounding atria. We hypothesize that late gadolinium-enhanced cardiovascular magnetic resonance (LGE-CMR) can be applied to define the fibrotic human SAN structure in vivo. METHODS AND RESULTS: LGE-CMR atrial scans of healthy volunteers (n olu, 23-52 y.o.) using a 3 Tesla magnetic resonance imaging system with a spatial resolution of 1...
January 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28087351/central-nervous-system-vasculitis-in-adults-an-update
#2
REVIEW
Lívia Almeida Dutra, Alexandre Wagner Silva de Souza, Gabriela Grinberg-Dias, Orlando Graziani Povoas Barsottini, Simone Appenzeller
Primary central nervous system vasculitis (PCNSV) is a challenging diagnosis due to broad clinical manifestations and variable specificity and sensitivity of laboratory and imaging diagnostic tools. Differential diagnosis include reversible cerebral vasoconstriction syndrome (RCVS), secondary vasculitis of the CNS and other noninflammatory vasculopathies. Brain biopsy is essential for definitive diagnosis and to exclude mimickers. Recent data show data large-vessel PCNSV present worse prognosis when compared to small-vessel PCNSV...
January 10, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28078844/a-natural-formula-containing-lactoferrin-equisetum-arvensis-soy-isoflavones-and-vitamin-d3-modulates-bone-remodeling-and-inflammatory-markers-in-young-and-aged-rats
#3
L Menghini, C Ferrante, L Leporini, L Recinella, A Chiavaroli, S Leone, G Pintore, M Vacca, G Orlando, L Brunetti
A pivotal role in osteoporosis development is played by radical oxygen species (ROS), the increased production of which is related to inhibited osteoblastic activity and bone formation. A new field of research could involve medicinal plants with antioxidant and protective effects in osteoporosis. Furthermore, considering the multifactorial metabolic aspects of osteoporosis, the pharmacological association of multiple medicinal plants could improve patient response. The aim of the present study is to evaluate in vitro and in vivo the protective effects of a natural formula containing lactoferrin 12%, Equisetum arvensis ES 54%, soy isoflavones 34% and vitamin D3 0...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078455/retention-of-laparoscopic-and-robotic-skills-among-medical-students-a-randomized-controlled-trial
#4
Megan S Orlando, Lauren Thomaier, Melinda G Abernethy, Chi Chiung Grace Chen
BACKGROUND: Although simulation training beneficially contributes to traditional surgical training, there are less objective data on simulation skills retention. OBJECTIVE: To investigate the retention of laparoscopic and robotic skills after simulation training. METHODS: We present the second stage of a randomized single-blinded controlled trial in which 40 simulation-naïve medical students were randomly assigned to practice peg transfer tasks on either laparoscopic (N = 20, Fundamentals of Laparoscopic Surgery, Venture Technologies Inc...
January 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28074935/neutrophil-elastase-cleavage-of-the-gc1q-domain-impairs-the-emilin1-%C3%AE-4%C3%AE-1-integrin-interaction-cell-adhesion-and-anti-proliferative-activity
#5
Orlando Maiorani, Eliana Pivetta, Alessandra Capuano, Teresa Maria Elisa Modica, Bruna Wassermann, Francesco Bucciotti, Alfonso Colombatti, Roberto Doliana, Paola Spessotto
The extracellular matrix glycoprotein EMILIN1 exerts a wide range of functions mainly associated with its gC1q domain. Besides providing functional significance for adhesion and migration, the direct interaction between α4β1 integrin and EMILIN1-gC1q regulates cell proliferation, transducing net anti-proliferative effects. We have previously demonstrated that EMILIN1 degradation by neutrophil elastase (NE) is a specific mechanism leading to the loss of functions disabling its regulatory properties. In this study we further analysed the proteolytic activity of NE, MMP-3, MMP-9, and MT1-MMP on EMILIN1 and found that MMP-3 and MT1-MMP partially cleaved EMILIN1 but without affecting the functional properties associated with the gC1q domain, whereas NE was able to fully impair the interaction of gC1q with the α4β1 integrin by cleaving this domain outside of the E933 integrin binding site...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28073472/the-interaction-between-cyanobacteria-and-zooplankton-in-a-more-eutrophic-world
#6
REVIEW
Kemal Ali Ger, Pablo Urrutia-Cordero, Paul C Frost, Lars-Anders Hansson, Orlando Sarnelle, Alan E Wilson, Miquel Lürling
As blooms of cyanobacteria expand and intensify in freshwater systems globally, there is increasing interest in their ecological effects. In addition to being public health hazards, cyanobacteria have long been considered a poor quality food for key zooplankton grazers that link phytoplankton to higher trophic levels. While past laboratory studies have found negative effects of nutritional constraints and defensive traits (i.e., toxicity and colonial or filamentous morphology) on the fitness of large generalist grazers (i...
April 2016: Harmful Algae
https://www.readbyqxmd.com/read/28067982/sensation-loss-after-superficial-parotidectomy-a-prospective-controlled-multicenter-trial
#7
Maria Grosheva, Sami Shabli, Gerd Fabian Volk, Barbara Sommer, Laura Ludwig, Mira Finkensieper, Claus Wittekindt, Jens Peter Klussmann, Orlando Guntinas-Lichius, Dirk Beutner
BACKGROUND: The purpose of this study was to evaluate the occurrence of hypoesthesia after superficial parotidectomy depending on preservation of posterior branch of the great auricular nerve (GAN). METHODS: This prospective, controlled, double blind, multicenter trial included 130 patients. The posterior branch was preserved in 93 patients (GAN group), and ligated in 33 patients (non-GAN group). In 4 patients, GAN status was unknown. Included patients underwent sensory testing (TouchTest) and subjective evaluation at 6, 12, and 24 months after surgery...
January 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/28067909/smchd1-mutations-associated-with-a-rare-muscular-dystrophy-can-also-cause-isolated-arhinia-and-bosma-arhinia-microphthalmia-syndrome
#8
Natalie D Shaw, Harrison Brand, Zachary A Kupchinsky, Hemant Bengani, Lacey Plummer, Takako I Jones, Serkan Erdin, Kathleen A Williamson, Joe Rainger, Alexei Stortchevoi, Kaitlin Samocha, Benjamin B Currall, Donncha S Dunican, Ryan L Collins, Jason R Willer, Angela Lek, Monkol Lek, Malik Nassan, Shahrin Pereira, Tammy Kammin, Diane Lucente, Alexandra Silva, Catarina M Seabra, Colby Chiang, Yu An, Morad Ansari, Jacqueline K Rainger, Shelagh Joss, Jill Clayton Smith, Margaret F Lippincott, Sylvia S Singh, Nirav Patel, Jenny W Jing, Jennifer R Law, Nalton Ferraro, Alain Verloes, Anita Rauch, Katharina Steindl, Markus Zweier, Ianina Scheer, Daisuke Sato, Nobuhiko Okamoto, Christina Jacobsen, Jeanie Tryggestad, Steven Chernausek, Lisa A Schimmenti, Benjamin Brasseur, Claudia Cesaretti, Jose E García-Ortiz, Tatiana Pineda Buitrago, Orlando Perez Silva, Jodi D Hoffman, Wolfgang Mühlbauer, Klaus W Ruprecht, Bart L Loeys, Masato Shino, Angela M Kaindl, Chie-Hee Cho, Cynthia C Morton, Richard R Meehan, Veronica van Heyningen, Eric C Liao, Ravikumar Balasubramanian, Janet E Hall, Stephanie B Seminara, Daniel Macarthur, Steven A Moore, Koh-Ichiro Yoshiura, James F Gusella, Joseph A Marsh, John M Graham, Angela E Lin, Nicholas Katsanis, Peter L Jones, William F Crowley, Erica E Davis, David R FitzPatrick, Michael E Talkowski
Arhinia, or absence of the nose, is a rare malformation of unknown etiology that is often accompanied by ocular and reproductive defects. Sequencing of 40 people with arhinia revealed that 84% of probands harbor a missense mutation localized to a constrained region of SMCHD1 encompassing the ATPase domain. SMCHD1 mutations cause facioscapulohumeral muscular dystrophy type 2 (FSHD2) via a trans-acting loss-of-function epigenetic mechanism. We discovered shared mutations and comparable DNA hypomethylation patterning between these distinct disorders...
January 9, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28060676/karyotype-diversity-and-evolutionary-trends-in-armored-catfish-species-of-the-genus-harttia-siluriformes-loricariidae
#9
Daniel Rodrigues Blanco, Marcelo Ricardo Vicari, Roberto Laridondo Lui, Josiane Baccarin Traldi, Vanessa Bueno, Juliana de Fátima Martinez, Heleno Brandão, Osvaldo Takeshi Oyakawa, Orlando Moreira Filho
Most species of the genus Harttia inhabits the headwaters of small tributaries, but some species are restricted to the main channel of some rivers. This feature, combined with limited dispersal ability, leads to the formation of small isolated populations with reduced gene flow. Currently, there are 23 taxonomically defined and recognized species, and 17 of these are found in Brazil, distributed in several hydrographic basins. Despite this diversity, few chromosomal data for the species belonging to this genus are found in the literature...
January 6, 2017: Zebrafish
https://www.readbyqxmd.com/read/28054447/comparison-of-hospital-outcomes-and-resource-use-in-acute-copd-exacerbation-patients-managed-by-teaching-versus-nonteaching-services-in-a-community-hospital
#10
Khalid Abusaada, Leen Alsaleh, Victor Herrera, Yuan Du, Hassan Baig, George Everett
RATIONALE, AIMS, AND OBJECTIVES: The impact of teaching versus nonteaching services on outcomes and resource use in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is unknown. The aim of the study is to evaluate the impact of an internal medicine teaching service compared to a nonteaching service on outcomes and resource use in patients admitted with AECOPD in a community teaching hospital. METHODS: A retrospective cohort study of patients admitted for a primary diagnosis of chronic obstructive pulmonary disease exacerbation to Florida Hospital Orlando, a large community teaching hospital, between January 1, 2011, and December 31, 2014...
January 4, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28052652/anti-angiogenic-therapy-in-patients-with-advanced-gastric-and-gastroesophageal-junction-cancer-a-systematic-review
#11
Li-Tzong Chen, Do-Youn Oh, Min-Hee Ryu, Kun-Huei Yeh, Winnie Yeo, Roberto Carlesi, Rebecca Cheng, Jongseok Kim, Mauro Orlando, Yoon-Koo Kang
Despite advancements in therapy for advanced gastric and gastroesophageal junction cancers, their prognosis remains dismal. Tumor angiogenesis plays a key role in cancer growth and metastasis, and recent studies indicate that pharmacologic blockade of angiogenesis is a promising approach to therapy. In this systematic review, we summarize current literature on the clinical benefit of anti-angiogenic agents in advanced gastric cancer. We conducted a systematic search of PubMed and conference proceedings including the American Society of Clinical Oncology, the European Society for Medical Oncology, and the European Cancer Congress...
January 3, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28051761/mobile-phone-intervention-for-heart-failure-in-a-minority-urban-county-hospital-population-usability-and-patient-perspectives
#12
Stuti Dang, Chandana Karanam, Carlos Gómez-Orozco, Orlando Gómez-Marín
BACKGROUND: Chronic heart failure (HF) is a complex and costly disease. Daily weight and symptom monitoring is the cornerstone of HF management. Little information exists about feasibility of a mobile monitoring intervention among minority patients with HF. METHODS: We developed and tested usability of a mobile-monitoring system in minority patients with HF in a 2:1 randomized controlled trial. We tracked usage and obtained feedback on usability and the system overall at 1, 2, and 3 months...
January 4, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28051357/outcomes-of-a-mobile-phone-intervention-for-heart-failure-in-a-minority-county-hospital-population
#13
Stuti Dang, Chandana Karanam, Orlando Gómez-Marín
BACKGROUND: Chronic Heart Failure (HF) causes significant morbidity, mortality, and cost. Managing HF requires considerable self-management skills and self-efficacy. Little information exists about feasibility and potential impact of a mobile monitoring intervention to improve self-efficacy and quality of life (QoL) among minority patients with HF. MATERIALS AND METHODS: We developed a mobile phone-assisted case management program and tested its impact on outcomes in minority patients with HF in a 2:1 randomized controlled trial...
January 4, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28050869/the-separation-and-quantitation-of-peptides-with-and-without-oxidation-of-methionine-and-deamidation-of-asparagine-using-hydrophilic-interaction-liquid-chromatography-with-mass-spectrometry-hilic-ms
#14
Majors J Badgett, Barry Boyes, Ron Orlando
Peptides with deamidated asparagine residues and oxidized methionine residues are often not resolved sufficiently to allow quantitation of their native and modified forms using reversed phase (RP) chromatography. The accurate quantitation of these modifications is vital in protein biotherapeutic analysis because they can affect a protein's function, activity, and stability. We demonstrate here that hydrophilic interaction liquid chromatography (HILIC) adequately and predictably separates peptides with these modifications from their native counterparts...
January 3, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28040676/the-role-of-papillary-muscle-approximation-in-mitral-valve-repair-for-the-treatment-of-secondary-mitral-regurgitation
#15
REVIEW
Christos G Mihos, Evin Yucel, Orlando Santana
SummarySecondary mitral regurgitation (MR) is present in up to half of patients with dilated cardiomyopathy, and is associated with a poor prognosis. It primarily results from progressive left ventricular remodelling, papillary muscle displacement and tethering of the mitral valve leaflets. Mitral valve repair with an undersized ring annuloplasty is the reparative procedure of choice in the treatment of secondary MR. However, this technique is associated with a 30-60% incidence of recurrent moderate or greater MR at mid-term follow-up, which results in progressive deterioration of left ventricular function and increased morbidity...
December 30, 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28036394/first-identification-and-description-of-rickettsioses-and-q-fever-as-causes-of-acute-febrile-illness-in-nicaragua
#16
Megan E Reller, Ijeuru Chikeka, Jeremy J Miles, J Stephen Dumler, Christopher W Woods, Orlando Mayorga, Armando J Matute
BACKGROUND: Rickettsial infections and Q fever present similarly to other acute febrile illnesses, but are infrequently diagnosed because of limited diagnostic tools. Despite sporadic reports, rickettsial infections and Q fever have not been prospectively studied in Central America. METHODOLOGY/PRINCIPAL FINDINGS: We enrolled consecutive patients presenting with undifferentiated fever in western Nicaragua and collected epidemiologic and clinical data and acute and convalescent sera...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28036163/immunosensors-for-c-reactive-protein-based-on-ultrathin-films-of-carboxylated-cellulose-nanofibrils
#17
Yanxia Zhang, Orlando J Rojas
C-reactive protein (CRP) is an acute phase protein that has been widely used as a predictor of cardiovascular diseases. We report herein the synthesis of immunosensors based on carboxylated cellulose nanofibrils (CNF) for CRP detection, as demonstrated by quartz crystal microgravimetry (QCM). QCM sensors carrying ultrathin films of carboxylated CNF were prepared by using two protocols: (i) spin coating of CNF on QCM resonators followed by carboxylation via in situ oxidation with 2,2,6,6-tetramethyl-piperidine 1-oxyl (TEMPO) and, (ii) carboxymethylation of CNF in aqueous dispersion followed by spin coating deposition on the QCM resonators...
December 30, 2016: Biomacromolecules
https://www.readbyqxmd.com/read/28032368/clinical-presentation-and-echocardiographic-characteristics-of%C3%A2-uhl-s-anomaly
#18
Christos G Mihos, Maiteder Larrauri-Reyes, Evin Yucel, Orlando Santana
Uhl's anomaly is a rare cardiac malformation that results in partial or complete absence of the right ventricular myocardium. It most commonly presents in prenatal or newborn infants; however, it may also be found in some adults as advanced right-sided heart failure. Differential diagnoses include arrhythmogenic right ventricular dysplasia and Ebstein's anomaly. Herein, we describe the clinical presentation of Uhl's anomaly in a previously undiagnosed middle-aged adult, and review the echocardiographic criteria used to diagnose and differentiate this rare, albeit important, myocardial disorder...
December 29, 2016: Echocardiography
https://www.readbyqxmd.com/read/28029548/hybrid-systems-based-on-gold-nanostructures-and-porphyrins-as-promising-photosensitizers-for-photodynamic-therapy
#19
Daniele C Ferreira, Camila S Monteiro, Claudilene R Chaves, Gustavo A M Sáfar, Roberto L Moreira, Maurício V B Pinheiro, Dayse C S Martins, Luiz Orlando Ladeira, Klaus Krambrock
Gold nanostructures of two different shapes (spheres and rods) were synthesized to form a colloidal hybrid system with 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrin tosylate salt (H2TM4PyP(OTs)4) (POR) for applications in photodynamic therapy (PDT) using light in the visible spectral range. Electron paramagnetic resonance (EPR) experiments in combination with spin trapping were used for the detection of reactive oxygen species (ROS) and evaluation of the efficiency of these novel hybrid systems as photosensitizers...
October 26, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28027973/the-role-of-imaging-tools-for-the-diagnosis-of-borderline-ovarian-tumors-a-systematic-review-and-meta-analysis
#20
REVIEW
Giuliano Moysés Borrelli, Leandro Accardo de Mattos, Marina de Paula Andres, Manoel Orlando da Costa Gonçalves, Rosanne M Kho, Mauricio Simões Abrão
Borderline ovarian tumors (BOTs) are tumors with low malignant potential that occurs most often in young women. Its preoperative diagnosis can improve surgical strategy and reproductive approach. This study systematically reviews the literature for the accuracy of transvaginal ultrasound (TVUS), magnetic resonance (MRI) and computed tomography (CT) in the diagnostic of borderline ovarian tumors. We conducted a search in Pubmed/Medline of articles in English of the last 5 years and included 14 studies for systematic review and 9 of them in the meta-analysis...
December 24, 2016: Journal of Minimally Invasive Gynecology
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