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https://www.readbyqxmd.com/read/28445914/clinical-significance-of-intraluminal-contrast-enhancement-in-patients-with-spontaneous-cervical-artery-dissection-a%C3%A2-black-blood-mri-study
#1
Eva Coppenrath, Olga Lenz, Nora Sommer, Nina Lummel, Jennifer Linn, Karla Treitl, Fabian Bamberg, Maximilian Reiser, Thomas Pfefferkorn, Tobias Saam
Purpose Recent studies have suggested that intraluminal thrombi show contrast enhancement on carotid black-blood T1w MRI. The aim of this study was to evaluate the significance of intraluminal contrast enhancement (iCE) regarding symptom status in patients with spontaneous cervical artery dissection (sCAD). Methods 33 consecutive patients (19 men) with sCAD received a brain MRI (DIFF, T2w, T2*w, FLAIR) and a multi-sequence 3T-MRI with fat-saturated high-resolution black-blood T1w-sequences pre- and post-contrast, contrast-enhanced MR angiography and TOF images of carotid and vertebral arteries...
April 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28445732/the-hect-family-ubiquitin-ligase-eel-1-regulates-neuronal-function-and-development
#2
Karla J Opperman, Ben Mulcahy, Andrew C Giles, Monica G Risley, Rayna L Birnbaum, Erik D Tulgren, Ken Dawson-Scully, Mei Zhen, Brock Grill
Genetic changes in the HECT ubiquitin ligase HUWE1 are associated with intellectual disability, but it remains unknown whether HUWE1 functions in post-mitotic neurons to affect circuit function. Using genetics, pharmacology, and electrophysiology, we show that EEL-1, the HUWE1 ortholog in C. elegans, preferentially regulates GABAergic presynaptic transmission. Decreasing or increasing EEL-1 function alters GABAergic transmission and the excitatory/inhibitory (E/I) balance in the worm motor circuit, which leads to impaired locomotion and increased sensitivity to electroshock...
April 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28443975/breastfeeding-assessment-instruments-and-their-use-in-clinical-practice
#3
Bárbara Tideman Sartorio, Kelly Pereira Coca, Karla Oliveira Marcacine, Érika de Sá Vieira Abuchaim, Ana Cristina Freitas de Vilhena Abrão
Objectives: To identify breastfeeding assessment tools, their application in clinical practice, and their validation and cross-cultural adaptation. Method: This is an integrative review of literature obtained from six databases and an online library, conducted from August 2014 to December 2015, without a temporal delimitation. Results: We identified 19 assessment tools, of which 12 were validated and five were cross-culturally adapted. In terms of adaptation, the tools were used to assess the risk of early weaning (BAPT) and the perception/behaviour of mothers during nursing (BSES-SF and IIFAS)...
April 20, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28438636/identification-of-chemotaxis-operon-cheyza-and-chea-gene-expression-under-stressful-conditions-in-piscirickettsia-salmonis
#4
Romina Albornoz, Karla Valenzuela, Juan P Pontigo, Patricio Sánchez, Pamela Ruiz, Ruben Avendaño-Herrera, Alex Romero, Cristian Oliver, Alejandro Yáñez
Piscirickettsia salmonis is the etiological agent of piscirickettsiosis, which, as the main systemic disease in the Chilean salmon industry, causes significant economic losses. This bacterium can produce biofilm as a persistence and survival strategy in adverse conditions. In other bacteria, cheA is a key gene for modulating the onset of bacterial chemotaxis, as well as having a secondary role in biofilm production. Notwithstanding this association, the potential relationships between biofilm formation and genes involved in P...
April 21, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28436089/a-novel-dense-granule-protein-gra41-regulates-timing-of-egress-and-calcium-sensitivity-in-toxoplasma-gondii
#5
Kaice A LaFavers, Karla M Márquez-Nogueras, Isabelle Coppens, Silvia N J Moreno, Gustavo Arrizabalaga
Toxoplasma gondii is an obligate intracellular apicomplexan parasite with high seroprevalence in humans. Repeated lytic cycles of invasion, replication and egress drive both the propagation and the virulence of this parasite. Key steps in this cycle, including invasion and egress, depend on tightly regulated calcium fluxes and, while many of the calcium-dependent effectors have been identified, the factors that detect and regulate the calcium fluxes are mostly unknown. To address this knowledge gap, we used a forward genetic approach to isolate mutants resistant to extracellular exposure to the calcium ionophore A23187...
April 24, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28432698/quantitative-evaluation-of-metal-artifacts-using-different-cbct-devices-high-density-materials-and-field-of-views
#6
Marina Codari, Karla de Faria Vasconcelos, Laura Ferreira Pinheiro Nicolielo, Francisco Haiter Neto, Reinhilde Jacobs
OBJECTIVE: To objectively compare the influence of different cone-beam computed tomography (CBCT) devices, high-density materials and field of views (FOVs) on metal artifact expression. MATERIAL AND METHODS: For this in vitro study, three customized acrylic resin phantoms containing high-density materials cylinders: titanium, copper-aluminum alloy and amalgam were scanned on three CBCT devices using high-resolution protocols, same voxel size (0.2 mm) and different FOVs...
April 22, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28432565/parapharyngodon-hugoi-n-sp-a-new-nematode-oxyuroidea-pharyngodonidae-of-the-tree-frog-trachycephalus-typhonius-linnaeus-from-the-brazilian-pantanal-including-a-key-to-the-congeners-from-amphibians-of-the-american-continent
#7
Felipe B Pereira, Karla M Campião, José L Luque, Luiz E R Tavares
A new nematode Parapharyngodon hugoi n. sp. (Oxyuroidea: Pharyngodonidae) is described parasitising the large intestine of the tree frog Trachycephalus typhonius (Linnaeus) (Anura: Hylidae) from the wetlands of Pantanal, State of Mato Grosso do Sul, Brazil. The new species exhibits a unique structure of the posterior cloacal lip in males, which is supported by a rigid V-shaped structure. Parapharyngodon hylidae parasitic in hylid frogs, including T. typhonius, from Mexico, is the most similar congener to P...
April 21, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28432151/dehydration-enhances-multiple-physiological-defense-mechanisms-in-a-desert-lizard-heloderma-suspectum
#8
Karla T Moeller, Guillaume Demare, Scott Davies, Dale F DeNardo
The physiological challenges associated with dehydration can induce an increase in plasma glucocorticoid concentrations, a response thought to provide the mechanism for dehydration suppressing immune function. However, a comprehensive examination of the interrelationship of dehydration, stress, and immune function has not been conducted within a single species. We previously demonstrated that Gila monsters (Heloderma suspectum), which inhabit a xeric environment with a predictable seasonal drought, have enhanced measures of innate immunity when dehydrated...
April 21, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28428649/role-of-magnetic-resonance-imaging-in-the-planning-of-breast-cancer-treatment-strategies-comparison-with-conventional-imaging-techniques
#9
Luciana Karla Lira França, Almir Galvão Vieira Bitencourt, Hugo Lamartine Souza Paiva, Caroline Baptista Silva, Nara Pacheco Pereira, Jociana Paludo, Luciana Graziano, Camila Souza Guatelli, Juliana Alves de Souza, Elvira Ferreira Marques
OBJECTIVE: To assess the role of magnetic resonance imaging (MRI) in the planning of breast cancer treatment strategies. MATERIALS AND METHODS: The study included 160 women diagnosed with breast cancer, who underwent breast MRI for preoperative staging. Using Pearson's correlation coefficient (r), we compared the size of the primary tumor, as determined by MRI, by conventional imaging (mammography and ultrasound), and in the pathological examination (gold standard)...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28427647/ascorbic-acid-stability-in-fruit-juices-during-thermosonication
#10
Karla Aguilar, Alfonso Garvín, Albert Ibarz, Pedro E D Augusto
Thermosonication is an emerging technology useful for inactivating microorganisms and enzymes in fruit juices. However, the effect of the ultrasound processing on the ascorbic acid content is not clear and the results reported in the literature are contradictory. In this work, the impact of sonication and thermosonication on the ascorbic acid content was first evaluated in model systems. Degassed model solutions at four different pH values (3-6) were processed with or without sonication for 60min at two different conditions of temperature (25 and 55°C)...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427285/premenstrual-dysphoric-disorder-symptoms-following-ovarian-suppression-triggered-by-change-in-ovarian-steroid-levels-but-not-continuous-stable-levels
#11
Peter J Schmidt, Pedro E Martinez, Lynnette K Nieman, Deloris E Koziol, Karla D Thompson, Linda Schenkel, Paul G Wakim, David R Rubinow
OBJECTIVE: Premenstrual dysphoric disorder (PMDD) symptoms are eliminated by ovarian suppression and stimulated by administration of ovarian steroids, yet they appear with ovarian steroid levels indistinguishable from those in women without PMDD. Thus, symptoms could be precipitated either by an acute change in ovarian steroid levels or by stable levels above a critical threshold playing a permissive role in expression of an underlying infradian affective "pacemaker." The authors attempted to determine which condition triggers PMDD symptoms...
April 21, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28427108/an-unusual-hypoechoic-solid-mass-in-the-pancreatic-head
#12
Valentin Blank, Katrin Schierle, Ulrich Hacker, Toni Herta, Vladan Vucinic, Albrecht Hoffmeister, Joachim Mössner, Boris Jansen-Winkeln, Volker Keim, Thomas Karlas
Solid pancreatic lesions found on imaging procedures are suspicious for malignancy and, therefore, demand immediate diagnostic evaluation and therapy. In the case of indeterminate histology, a primary resection should be considered in order to preserve the possibility of curative surgery, although rare entities may be initially disregarded. We present here the case of a 48-year-old female patient with a hypoechoic lesion of the pancreatic head, which was clearly delineated from the surrounding pancreatic tissue...
April 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28427091/-development-and-evaluation-of-herzwegweiser-de-an-informational-website-designed-for-post-rehabilitation-support-of-cardiac-patients-and-their-healthcare-professionals-in-berlin-brandenburg
#13
Sabine Stamm-Balderjahn, Susanne Bartel, Kristin Wilke, Karla Spyra
ObjectiveThe internet portal 'herzwegweiser.de' was developed to assist individuals with cardiovascular diseases in the phase III rehabilitation in the region of Berlin-Brandenburg. It provides information on this specific disease as well as on aftercare services, e. g. regional cardiac groups. For the medical and therapeutic colleagues specific information such as treatment guidelines and a cardiac group placement service for trainers and medical doctors were set up. MethodsThe study was based on a mixed-methods design...
April 20, 2017: Die Rehabilitation
https://www.readbyqxmd.com/read/28424664/spotted-fever-epidemiology-and-vector-rickettsia-host-relationship-in-rio-de-janeiro-state
#14
Diego C Montenegro, Karla Bitencourth, Stefan V de Oliveira, Ana P Borsoi, Karen M Cardoso, Maria S B Sousa, Cristina Giordano-Dias, Marinete Amorim, Nicolau M Serra-Freire, Gilberto S Gazêta, Reginaldo P Brazil
The eco-epidemiological scenario of spotted fever (SF), a tick-borne disease that affects humans and other animals in several countries around the world, was analyzed in Rio de Janeiro (RJ) State, Brazil. During the last 34 years, 990 SF cases were reported in RJ (the Brazilian state with the highest population density), including 116 cases confirmed by serology (RIFI) or PCR, among 42.39% of the municipalities with reported cases of SF. The epidemiologic dynamics of SF in RJ State are very heterogeneous in time and space, with outbreaks, high mortality rates and periods of epidemiological silence (no SF cases reported)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28422293/an-autocrine-atp-release-mechanism-regulates-basal-ciliary-activity-in-airway-epithelium
#15
Karla Droguett, Mariana Rios, Daniela V Carreño, Camilo Navarrete, Christian Fuentes, Manuel Villalón, Nelson P Barrera
Extracellular nucleotides, including ATP, are locally released by the airway epithelium and stimulate ciliary activity in a [Ca(2+) ]i dependent manner after mechanical stimulation of ciliated cells. However, it is unclear if the released ATP is involved in regulating basal ciliary activity and mediating changes in ciliary activity in response to chemical stimulation. In this study we evaluated ciliary beat frequency (CBF) and ciliary beating forces in primary cultures from mouse tracheal epithelium, using videomicroscopy and atomic force microscopy (AFM), respectively...
April 19, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28421788/factors-associated-with-sarcopenia-in-institutionalized-elderly
#16
Alice Ferreira Mesquita, Emanuelle Cruz da Silva, Michaela Eickemberg, Anna Karla Carneiro Roriz, Jairza Maria Barreto-Medeiros, Lílian Barbosa Ramos
INTRODUCTION: The sarcopenia is a negative aspect for the health of the elderly, increased the risk for disease and mortality. Additionally can contributes greatly to functional reducing capacity and quality of life. OBJECTIVE: To identify the prevalence and factors associated with sarcopenia in institutionalized elderly. METHODS: This is a cross-sectional study, conducted with 216 elderly people, aged ≥ 60 years, of both sexes, residents in long-term care facilities in Salvador-Bahia, Brazil...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421512/new-insights-into-cockroach-allergens
#17
REVIEW
Anna Pomés, Geoffrey A Mueller, Thomas A Randall, Martin D Chapman, L Karla Arruda
PURPOSE OF REVIEW: This review addresses the most recent developments on cockroach allergen research in relation to allergic diseases, especially asthma. RECENT FINDINGS: The number of allergens relevant to cockroach allergy has recently expanded considerably up to 12 groups. New X-ray crystal structures of allergens from groups 1, 2, and 5 revealed interesting features with implications for allergen standardization, sensitization, diagnosis, and therapy. Cockroach allergy is strongly associated with asthma particularly among children and young adults living in inner-city environments, posing challenges for disease control...
April 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28414523/presence-of-toxoplasma-gondii-in-drinking-water-from-an-endemic-region-in-southern-mexico
#18
Ivonne B Hernandez-Cortazar, Karla Y Acosta-Viana, Eugenia Guzman-Marin, Antonio Ortega-Pacheco, Jose C Segura-Correa, Matilde Jimenez-Coello
Toxoplasmosis can be acquired through the ingestion of contaminated drinking water with oocysts of Toxoplasma gondii, highly resistant to the routinely disinfection processes; based on chlorination commonly used in the water supply industry. The aim of this study was to determine the presence of T. gondii DNA in samples of public drinking water from an endemic region of southern Mexico. In total 74 samples of water (5 L each) were collected from the three well fields (I, II, and III) and 71 independent wells, distributing public drinking water to the city of Merida Yucatan, after passing through the chlorination process...
April 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28411259/cerebral-embolic-protection-devices-during-transcatheter-aortic-valve-implantation-systematic-review-and-meta-analysis
#19
Rodrigo Bagur, Karla Solo, Saleh Alghofaili, Luis Nombela-Franco, Chun Shing Kwok, Samual Hayman, Reed A Siemieniuk, Farid Foroutan, Frederick A Spencer, Per O Vandvik, Tim G Schäufele, Mamas A Mamas
BACKGROUND AND PURPOSE: Silent ischemic embolic lesions are common after transcatheter aortic valve implantation (TAVI). The use of embolic protection devices (EPD) may reduce the occurrence of these embolic lesions. Thus, a quantitative overview and credibility assessment of the literature was necessary to draw a robust message about EPD. Therefore, the aim of this meta-analysis was to study whether the use of EPD reduces silent ischemic and clinically evident cerebrovascular events associated with TAVI...
April 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28410766/endobronquial-leiomyoma-outcome-of-conservative-management
#20
Francisco García Gómez, Ana Triviño, Karla Tello Collantes
No abstract text is available yet for this article.
April 11, 2017: Archivos de Bronconeumología
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