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Zhenjun Zhang, Guy R Fogel, Zhenhua Liao, Yitao Sun, Weiqiang Liu
Inappropriate lordotic angle of lumbar fusion cage could be associated with cage damage or subsidence. The biomechanical influence of cage lordotic angle on lumbar spine has not been fully investigated. Four surgical finite element models were constructed by inserting cages with various lordotic angles at L3-L4 disc space. The four motion modes were simulated. The range of motion (ROM) decreased with increased lordotic angle of cage in flexion, extension, and rotation, whereas it was not substantially changed in bending...
March 7, 2018: Computer Methods in Biomechanics and Biomedical Engineering
Chadi Y Saad, Joshua Fogel, Sofia Rubinstein
OBJECTIVES: Errors in drug dosing lead to poor patient outcomes and are common in patients with chronic kidney disease (CKD). Because the majority of patients with CKD are being treated by physicians specializing in internal medicine, we studied the awareness and knowledge that internal medicine resident trainees (IMRTs) have regarding the correct dosage of commonly used analgesic and neuropsychotropic medications for patients with CKD. METHODS: We surveyed 353 IMRTs about their awareness of whether a medication needs dose adjustment in patients with CKD and knowledge for medication adjustment by level of glomerular filtration rate...
March 2018: Southern Medical Journal
Zhenjun Zhang, Hui Li, Guy R Fogel, Dingding Xiang, Zhenhua Liao, Weiqiang Liu
In lumbar interbody fusion, a porous additive manufactured (AM) cage can provide more desirable stiffness, and may be beneficial to bone ingrowth. The biomechanical influence of porous cages on stability, subsidence, and facet contact force has not been fully described. The aim of this study was to verify biomechanical effects of porous cages. Surgical finite element (FE) model of transforaminal lumbar interbody fusion (TLIF) was constructed. The partially porous (PP) cages and fully porous (FP) cages were applied...
February 23, 2018: Computers in Biology and Medicine
Pavel Goldstein, Irit Weissman-Fogel, Guillaume Dumas, Simone G Shamay-Tsoory
The mechanisms underlying analgesia related to social touch are not clear. While recent research highlights the role of the empathy of the observer to pain relief in the target, the contribution of social interaction to analgesia is unknown. The current study examines brain-to-brain coupling during pain with interpersonal touch and tests the involvement of interbrain synchrony in pain alleviation. Romantic partners were assigned the roles of target (pain receiver) and observer (pain observer) under pain-no-pain and touch-no-touch conditions concurrent with EEG recording...
February 26, 2018: Proceedings of the National Academy of Sciences of the United States of America
Marcus W Ni, Ray O Prather, Giovanna Rodriguez, Rachel Quinn, Eduardo Divo, Mark Fogel, Alain J Kassab, William M DeCampli
Children born with anatomic or functional "single ventricle" must progress through two or more major operations to sustain life. This management sequence culminates in the total cavopulmonary connection, or "Fontan" operation. A consequence of the "Fontan circulation", however, is elevated central venous pressure and inadequate ventricular preload, which contribute to continued morbidity. We propose a solution to these problems by increasing pulmonary blood flow using an "injection jet" (IJS) in which the source of blood flow and energy is the ventricle itself...
February 20, 2018: Cardiovascular Engineering and Technology
Michael P DiLorenzo, Elizabeth Goldmuntz, Susan C Nicolson, Mark A Fogel, Laura Mercer-Rosa
Introduction The right ventricular adaptations early after surgery in infants with tetralogy of Fallot are important to understand the changes that occur later on in life; this physiology has not been fully delineated. We sought to assess early postoperative right ventricular remodelling in patients with tetralogy of Fallot by cardiac MRI. Materials and method Subjects with tetralogy of Fallot under 1 year of age were recruited following complete surgical repair for tetralogy of Fallot. Protocol-based cardiac MRI to assess anatomy, function, and flows was performed before hospital discharge using the feed and sleep technique, an unsedated imaging technique...
February 15, 2018: Cardiology in the Young
John A Bellone, Jeffrey R Murray, Paolo Jorge, Travis G Fogel, Mary Kim, Desiree R Wallace, Richard E Hartman
OBJECTIVES: We tested whether supplementing with pomegranate polyphenols can enhance cognitive/functional recovery after stroke. METHODS: In this parallel, block-randomized clinical trial, we administered commercially-available pomegranate polyphenol or placebo pills twice per day for one week to adult inpatients in a comprehensive rehabilitation setting starting approximately 2 weeks after stroke. Pills contained 1 g of polyphenols derived from whole pomegranate, equivalent to levels in approximately 8 oz of juice...
February 13, 2018: Nutritional Neuroscience
Roman Guryn, Marek Staszewski, Anna Stasiak, Daniel McNaught Flores, Wiesława Agnieszka Fogel, Rob Leurs, Krzysztof Walczyński
H₃ receptors present on histaminergic and non-histaminergic neurons, act as autoreceptors or heteroreceptors controlling neurotransmitter release and synthesis. Previous, studies have found that the compound N-methyl-N-3-phenylalkyl-2-[2-(4-n-propylpiperazin-1-yl)-1,3-thiazol-5-yl]ethan-1-amine (ADS-531, 2c) exhibits high in vitro potency toward H₃ guinea pig jejunal receptors, with pA₂ = 8.27. To optimize the structure of the lead compound ADS-531, a series of 5-substituted-2-thiazol-4-n-propylpiperazines 3 were synthesized and subjected to in vitro pharmacological characterization; the alkyl chain between position 2 of the thiazole ring and the terminal secondary N-methylamino function was elongated from three to four methylene groups and the N-methylamino functionality was substituted by benzyl-, 2-phenylethyl-, and 3-phenyl-propyl- moieties...
February 3, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Deborah Fogel, José Luis Fuentes, Luz Marina Soto, Wilson Lafuente, Rodrigo Moncayo-Estrada, Carlos López
We analyzed the infestation of the attached copepod species Lepeophtheirus sp on a wild population of Sciades herzbergii. The infestation and occurrence of attached copepods were related to body size, maturity and sex of host and the presence of lesions on fish skin were described. In 61 fish specimens (37 males and 24 females), total of 218 ectoparasitic copepods, including 204 mature and 14 immature stages were found. Copepods were attached to different regions of fish body without any regular pattern. The prevalence of infestation was 80...
December 2017: International Journal for Parasitology. Parasites and Wildlife
David M Baker, Christopher J Freeman, Jane C Y Wong, Marilyn L Fogel, Nancy Knowlton
Coastal oceans are increasingly eutrophic, warm and acidic through the addition of anthropogenic nitrogen and carbon, respectively. Among the most sensitive taxa to these changes are scleractinian corals, which engineer the most biodiverse ecosystems on Earth. Corals' sensitivity is a consequence of their evolutionary investment in symbiosis with the dinoflagellate alga, Symbiodinium. Together, the coral holobiont has dominated oligotrophic tropical marine habitats. However, warming destabilizes this association and reduces coral fitness...
January 29, 2018: ISME Journal
Phyllis D Morgan, Jennifer Stone, Mahaman Moussa, Joshua Fogel, Linda Steele
This study examined the grade experience for online nurse practitioner students (N = 3760) who took more than 1 clinical course per academic term as compared with those who did not. Students who had more than 1 clinical course per term had a greater percentage of clinical course failures than other students (2.1% vs 0.8%, P = .001). Nurse practitioner programs should develop clear policies and guidelines for students taking more than 1 clinical course at a time.
January 25, 2018: Nurse Educator
Megan Comerford, Rachel Fogel, James Robert Bailey, Prianka Chilukuri, Naga Chalasani, Craig Steven Lammert
BACKGROUND: Conventional approaches to participant recruitment are often inadequate in rare disease investigation. Social networking sites such as Facebook may provide a vehicle to circumvent common research limitations and pitfalls. We report our preliminary experience with Facebook-based methodology for participant recruitment and participation into an ongoing study of autoimmune hepatitis (AIH). OBJECTIVE: The goal of our research was to conduct a pilot study to assess whether a Facebook-based methodology is capable of recruiting geographically widespread participants into AIH patient-oriented research and obtaining quality phenotypic data...
January 18, 2018: Journal of Medical Internet Research
Susan H Eshleman, Estelle Piwowar-Manning, Mariya V Sivay, Barbara Debevec, Stephanie Veater, Laura McKinstry, Linda-Gail Bekker, Sharon Mannheimer, Robert M Grant, Margaret A Chesney, Thomas J Coates, Beryl A Koblin, Jessica M Fogel
BACKGROUND: Assays that detect HIV antigen (Ag) and antibody (Ab) can be used to screen for HIV infection. OBJECTIVES: To compare the performance of the BioPlex 2200 HIV Ag-Ab assay and two other Ag/Ab combination assays for detection of acute HIV infection. STUDY DESIGN: Samples were obtained from 24 individuals (18 from the US, 6 from South Africa); these individuals were classified as having acute infection based on the following criteria: positive qualitative RNA assay; two negative rapid tests; negative discriminatory test...
January 11, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Phillip M Trusty, Timothy C Slesnick, Zhenglun Alan Wei, Jarek Rossignac, Kirk R Kanter, Mark A Fogel, Ajit P Yoganathan
The ultimate goal of Fontan surgical planning is to provide additional insights into the clinical decision-making process. In its current state, surgical planning offers an accurate hemodynamic assessment of the pre-operative condition, provides anatomical constraints for potential surgical options, and produces decent post-operative predictions if boundary conditions are similar enough between the pre-operative and post-operative states. Moving forward, validation with post-operative data is a necessary step in order to assess the accuracy of surgical planning and determine which methodological improvements are needed...
January 16, 2018: Journal of Cardiovascular Translational Research
Jeremy Viczko, Valya Sergeeva, Laura B Ray, Adrian M Owen, Stuart M Fogel
Sleep facilitates the consolidation (i.e., enhancement) of simple, explicit (i.e., conscious) motor sequence learning (MSL). MSL can be dissociated into egocentric (i.e., motor) or allocentric (i.e., spatial) frames of reference. The consolidation of the allocentric memory representation is sleep-dependent, whereas the egocentric consolidation process is independent of sleep or wake for explicit MSL. However, it remains unclear the extent to which sleep contributes to the consolidation of implicit (i.e., unconscious) MSL, nor is it known what aspects of the memory representation (egocentric, allocentric) are consolidated by sleep...
February 2018: Learning & Memory
Guilherme de Rezende Dias, Thais Tenorio Soares Fujii, Bernardo Fernandes Fogel, Ricardo Lourenço-de-Oliveira, Teresa Fernandes Silva-do-Nascimento, André Nóbrega Pitaluga, Carlos José Carvalho-Pinto, Antonio Bernardo Carvalho, Alexandre Afrânio Peixoto, Luísa Damazio Pitaluga Rona
BACKGROUND: Anopheles (Kerteszia) cruzii is the primary vector of human and simian malarias in Brazilian regions covered by the Atlantic Rainforest. Previous studies found that An. cruzii presents high levels of behavioural, chromosomal and molecular polymorphisms, which led to the hypothesis that it may be a complex of cryptic species. Here, An. cruzii specimens were collected in five sites in South-East Brazil located at different altitudes on the inner and coastal slopes of two mountain ranges covered by Atlantic Rainforest, known as Serra do Mar and Serra da Mantiqueria...
January 15, 2018: Parasites & Vectors
Gregori Galofré-Vilà
This paper reviews the current wealth of anthropometric history since the early efforts of Robert Fogel in the 1970s. The survey is based on a quantitative systematic review of the literature and counts a total of 447 peer-reviewed articles being published in the main leading journals in economic history, economics and biology. Data are analysed using network analysis by journal and author and the main contributions of anthropometric history are highlighted, pointing to future areas of inquiry. The contributions of books and book chapters are also quantified and analysed...
December 16, 2017: Economics and Human Biology
Brent L Fogel
The autosomal-recessive cerebellar ataxias comprise more than half of the known genetic forms of ataxia and represent an extensive group of clinically heterogeneous disorders that can occur at any age but whose onset is typically prior to adulthood. In addition to ataxia, patients often present with polyneuropathy and clinical symptoms outside the nervous system. The most common of these diseases is Friedreich ataxia, caused by mutation of the frataxin gene, but recent advances in genetic analysis have greatly broadened the ever-expanding number of causative genes to over 50...
2018: Handbook of Clinical Neurology
Brent L Fogel
The influence of genetics on neurologic disease is broad and it is becoming more common that clinicians are presented with a patient whose disease is likely of genetic origin. In the search for mutations causing Mendelian disorders, advances in genetic testing methodology have propelled modern neurologic practice beyond single-gene testing into the realm of genomic medicine, where routine evaluations encompass hundreds or thousands of genes, or even the entire exome, representing all protein-coding genes in the genome...
2018: Handbook of Clinical Neurology
Stéphanie Buart, Stéphane Terry, Muhammad Z Noman, Emilie Lanoy, Céline Boutros, Paul Fogel, Philippe Dessen, Guillaume Meurice, Yann Gaston-Mathé, Philippe Vielh, Séverine Roy, Emilie Routier, Virginie Marty, Sophie Ferlicot, Luc Legrès, Morad El Bouchtaoui, Nyam Kamsu-Kom, Jane Muret, Eric Deutsch, Alexander Eggermont, Jean-Charles Soria, Caroline Robert, Salem Chouaib
Gradients of hypoxia occur in most solid tumors and cells found in hypoxic regions are associated with the most aggressive and therapy-resistant fractions of the tumor. Despite the ubiquity and importance of hypoxia responses, little is known about the variation in the global transcriptional response to hypoxia in melanoma. Using microarray technology, whole genome gene expression profiling was first performed on established melanoma cell lines. From gene set enrichment analyses, we derived a robust 35 probes signature (hypomel for HYPOxia MELanoma) associated with hypoxia-response pathways, including 26 genes up regulated, and 9 genes down regulated...
December 12, 2017: Oncotarget
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