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https://www.readbyqxmd.com/read/28811043/treatment-of-the-fixation-surface-improves-glenoid-prosthesis-longevity-in-vitro
#1
Sarah Junaid, Sanjay Sanghavi, Carolyn Anglin, Anthony Bull, Roger Emery, Andrew A Amis, Ulrich Hansen
Many commercial cemented glenoid components claim superior fixation designs and increased survivability. However, both research and clinical studies have shown conflicting results and it is unclear whether these design variations do improve loosening rates. Part of the difficulty in investigating fixation failure is the inability to directly observe the fixation interface, a problem addressed in this study by using a novel experimental set-up. Cyclic loading-displacement tests were carried out on 60 custom-made glenoid prostheses implanted into a bone substitute...
July 22, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28807628/vertebral-alveolar-echinococcosis-a-case-report-systematic-analysis-and-review-of-the-literature
#2
REVIEW
Thomas Raphael Meinel, Bruno Gottstein, Vanessa Geib, Marius Johann Keel, Ruggero Biral, Markus Mohaupt, Jan Brügger
Alveolar echinococcosis caused by Echinococcus multilocularis is an infrequent zoonosis with a high degree of disability, morbidity, and mortality, especially in disease clusters of the northern hemisphere. The diagnosis is complicated by extended incubation time, diverse clinical manifestations, and mimicking of differential diagnoses. The primary organ affected is the liver, but extrahepatic disease is possible, with vertebral involvement in only a few dozen cases described worldwide. Although vertebral alveolar echinococcosis seems to be rare, it might be under diagnosed, and it might be seen more often as the number of people with immunocompromised conditions increases...
August 11, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28796519/coarse-grained-modelling-of-antibodies-from-small-angle-scattering-profiles
#3
Daniel Corbett, Max Hebditch, Rose Keeling, Peng Ke, Sofia Ekizoglou, Prasad Srinivasan Sarangapani, Jai A Pathak, Christopher F van der Walle, Shahid Uddin, Clair Baldock, Carlos Avendano, Robin A Curtis
Predicting the concentrated solution behaviour for monoclonal antibodies requires developing and using minimal models to describe their shape and interaction potential. Towards this end, the small-angle X-ray scattering (SAXS) profiles for a monoclonal antibody (COE-03) have been measured under solution conditions chosen to produce weak self-association. The experiments are complemented with molecular simulations of a three-bead antibody model with and without inter-bead attraction. The scattering profile is extracted directly from the molecular simulation to avoid using the decoupling approximation...
August 10, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28794282/partial-efficacy-of-a-broadly-neutralizing-antibody-against-cell-associated-shiv-infection
#4
Matthew S Parsons, Sarah B Lloyd, Wen Shi Lee, Anne B Kristensen, Thakshila Amarasena, Rob J Center, Brandon F Keele, Jeffrey D Lifson, Celia C LaBranche, David Montefiori, Bruce D Wines, P Mark Hogarth, Kristine M Swiderek, Vanessa Venturi, Miles P Davenport, Stephen J Kent
Broadly neutralizing antibodies (BnAbs) protect macaques from cell-free simian/human immunodeficiency virus (SHIV) challenge, but their efficacy against cell-associated SHIV is unclear. Virus in cell-associated format is highly infectious, present in transmission-competent bodily fluids, and potentially capable of evading antibody-mediated neutralization. The PGT121 BnAb, which recognizes an epitope consisting of the V3 loop and envelope glycans, mediates antibody-dependent cellular cytotoxicity and neutralization of cell-to-cell HIV-1 transmission...
August 9, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28793183/utilisation-of-eye-health-care-services-in-australia-the-national-eye-health-survey
#5
Joshua Foreman, Jing Xie, Stuart Keel, Hugh R Taylor, Mohamed Dirani
IMPORTANCE: National data on eye healthcare service utilisation will inform Australia's eye health policy. BACKGROUND: To investigate the utilisation of eye healthcare services by Australians. DESIGN: Cross-sectional survey PARTICIPANTS: Indigenous Australians aged 40 years and older and non-Indigenous Australians aged 50 years and older. METHODS: 1738 Indigenous Australians and 3098 non-Indigenous Australians were recruited from 30 randomly-selected sites, stratified by remoteness...
August 9, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28770347/web-thickness-determines-the-therapeutic-effect-of-endoscopic-keel-placement-on-anterior-glottic-web
#6
Jian Chen, Fang Shi, Min Chen, Yue Yang, Lei Cheng, Haitao Wu
This work is a retrospective analysis to investigate the critical risk factor for the therapeutic effect of endoscopic keel placement on anterior glottic web. Altogether, 36 patients with anterior glottic web undergoing endoscopic lysis and silicone keel placement were enrolled. Their voice qualities were evaluated using the voice handicap index-10 (VHI-10) questionnaire, and improved significantly 3 months after surgery (21.53 ± 3.89 vs 9.81 ± 6.68, P < 0.0001). However, 10 (27.8%) cases had web recurrence during the at least 1-year follow-up...
August 2, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28764765/late-phase-immune-responses-limiting-oocyst-survival-are-independent-of-tep1-function-yet-display-strain-specific-differences-in-anopheles-gambiae
#7
Hyeogsun Kwon, Benjamin R Arends, Ryan C Smith
BACKGROUND: There is emerging evidence that mosquito anti-Plasmodium immunity is multimodal with distinct mechanisms for killing malaria parasites at either the ookinete or oocyst stages. Early-phase responses targeting the ookinete require complement-like components circulating in the mosquito hemolymph that result in TEP1-mediated lysis or melanization. Additional responses mediated by the LL3 and STAT pathways limit oocyst survival through unknown mechanisms that require mosquito hemocyte function...
August 1, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28761797/correlated-evolution-of-sternal-keel-length-and-ilium-length-in-birds
#8
Tao Zhao, Di Liu, Zhiheng Li
The interplay between the pectoral module (the pectoral girdle and limbs) and the pelvic module (the pelvic girdle and limbs) plays a key role in shaping avian evolution, but prior empirical studies on trait covariation between the two modules are limited. Here we empirically test whether (size-corrected) sternal keel length and ilium length are correlated during avian evolution using phylogenetic comparative methods. Our analyses on extant birds and Mesozoic birds both recover a significantly positive correlation...
2017: PeerJ
https://www.readbyqxmd.com/read/28760683/functional-morphology-of-hummingbird-bill-tips-their-function-as-tongue-wringers
#9
Alejandro Rico-Guevara, Margaret A Rubega
Nectarivores are animals that have evolved adaptations to efficiently exploit floral nectar as the main source of energy in their diet. It is well known that hummingbirds can extract nectar with impressive speed from flowers. However, despite decades of study on nectar intake rates, the mechanism by which feeding is ultimately achieved - the release of nectar from the tongue so that it can pass into the throat and be ingested - has not been elucidated. By using microCT scanning and macro high-speed videography we scrutinized the morphology and function of hummingbird bill tips, looking for answers about the nectar offloading process...
July 28, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28752913/prevalence-of-retinal-vein-occlusion-in-the-australian-national-eye-health-survey
#10
Stuart Keel, Jing Xie, Joshua Foreman, Peter van Wijngaarden, Hugh R Taylor, Mohamed Dirani
IMPORTANCE: In Australia, knowledge of the epidemiology of retinal vein occlusion (RVO) remains scarce due to a paucity of recent population-based data. The National Eye Health Survey (NEHS, 2015-16) provides an up-to-date estimate of the prevalence of RVO in non-Indigenous and Indigenous Australian adults. BACKGROUND: To determine the prevalence and associations of retinal vein occlusion (RVO) in a national sample of Indigenous and non-Indigenous Australian adults...
July 28, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28749588/primary-cutaneous-cd4-positive-small-medium-sized-pleomorphic-t-cell-lymphoproliferative-disorder-report-of-a-case-and-review-of-the-literature
#11
Brett H Keeling, Alde Carlo P Gavino, Joan Admirand, Anthony C Soldano
Primary cutaneous small/medium-sized T-cell lymphoma (PCSM-TCL), which was included in the WHO-EORTC classification for cutaneous lymphomas as a provisional entity in 2008, has recently been reclassified as a lymphoproliferative disorder (PCSM-TCLPD) due to its indolent behavior and uncertain malignant potential. Treatment with local therapies is usually curative, though there have been reports of aggressive, systemic disease. This spectrum of disease behavior evokes the consideration that this entity may actually be multiple diseases with a shared clinicopathologic features rather than a singular disease process with a variety of behaviors...
July 27, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28748668/identification-of-novel-simian-endogenous-retroviruses-that-are-indistinguishable-from-simian-retrovirus-srv-on-current-srv-diagnostic-assays
#12
Richard Grant, Brandon Keele, LaRene Kuller, Robin Watanabe, Alex Perret, Jeremy Smedley
Simian betaretroviruses include the well-known exogenous simian retroviruses (SRV-1 through SRV-8), and some closely related simian endogenous retroviruses (SERV). Here, we characterized two new viral genomes, which appear to represent novel SERVs but have characteristics of both SRV and SERV highlighting the need to develop new assays providing molecular and serologic differentiation of SERV and SRV to avoid false positives.
August 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28742695/does-surgeon-sex-matter-practice-patterns-and-outcomes-of-female-and-male-surgeons
#13
Catherine E Sharoky, Morgan M Sellers, Luke J Keele, Christopher J Wirtalla, Giorgos C Karakousis, Jon B Morris, Rachel R Kelz
OBJECTIVE: We sought to compare postoperative outcomes of female surgeons (FS) and male surgeons (MS) within general surgery. SUMMARY OF BACKGROUND DATA: FS in the workforce are increasing in number. Female physicians provide exceptional care in other specialties. Differences in surgical outcomes of FS and MS have not been examined. METHODS: We linked the AMA Physician Masterfile to discharge claims from New York, Florida, and Pennsylvania (2012 to 2013) to examine practice patterns and to compare surgical outcomes of FS and MS...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28740240/predicting-the-spread-of-the-asian-hornet-vespa-velutina-following-its-incursion-into-great-britain
#14
Matt J Keeling, Daniel N Franklin, Samik Datta, Mike A Brown, Giles E Budge
The yellow-legged or Asian hornet (Vespa velutina) is native to South-East Asia, and is a voracious predator of pollinating insects including honey bees. Since its accidental introduction into South-Western France in 2004, V. velutina has spread to much of western Europe. The presence of V. velutina in Great Britain was first confirmed in September 2016. The likely dynamics following an initial incursion are uncertain, especially the risk of continued spread, and the likely success of control measures. Here we extrapolate from the situation in France to quantify the potential invasion of V...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28738007/comparison-of-intraosseous-pentobarbital-administration-and-thoracic-compression-for-euthanasia-of-anesthetized-sparrows-passer-domesticus-and-starlings-sturnus-vulgaris
#15
Joanne R Paul-Murphy, Andrew Engilis, Peter J Pascoe, D Colette Williams, Kate A Gustavsen, Tracy L Drazenovich, M Kevin Keel, Tamsen M Polley, Irene E Engilis
OBJECTIVE To compare intraosseous pentobarbital treatment (IPT) and thoracic compression (TC) on time to circulatory arrest and an isoelectric electroencephalogram (EEG) in anesthetized passerine birds. ANIMALS 30 wild-caught adult birds (17 house sparrows [Passer domesticus] and 13 European starlings [Sturnus vulgaris]). PROCEDURES Birds were assigned to receive IPT or TC (n = 6/species/group). Birds were anesthetized, and carotid arterial pulses were monitored by Doppler methodology. Five subdermal braided-wire electrodes were used for EEG...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28737288/linkage-disequilibrium-among-commonly-genotyped-snp-variants-detected-from-bull-sequence
#16
W M Snelling, L A Kuehn, B N Keel, R M Thallman, G L Bennett
Genomic prediction utilizing causal variants could increase selection accuracy above that achieved with SNPs genotyped by currently available arrays used for genomic selection. A number of variants detected from sequencing influential sires are likely to be causal, but noticeable improvements in prediction accuracy using imputed sequence variant genotypes have not been reported. Improvement in accuracy of predicted breeding values may be limited by the accuracy of imputed sequence variants. Using genotypes of SNPs on a high-density array and non-synonymous SNPs detected in sequence from influential sires of a multibreed population, results of this examination suggest that linkage disequilibrium between non-synonymous and array SNPs may be insufficient for accurate imputation from the array to sequence...
July 24, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28732684/the-impact-of-current-infection-levels-on-the-cost-benefit-of-vaccination
#17
Matt J Keeling, Katherine A Broadfoot, Samik Datta
When considering a new vaccine programme or modifying an existing one, economic cost-benefit analysis, underpinned by predictive epidemiological modelling, is a key component. This analysis is intimately linked to the willingness to pay for additional QALYs (quality-adjusted life-years) gained; currently in England and Wales a health programme is economically viable if the cost per QALY gained is less than £ 20,000, and models are often used to assess if a vaccine programme is likely to fall below this threshold cost...
July 8, 2017: Epidemics
https://www.readbyqxmd.com/read/28732006/drivers-for-rift-valley-fever-emergence-in-mayotte-a-bayesian-modelling-approach
#18
Raphaëlle Métras, Guillaume Fournié, Laure Dommergues, Anton Camacho, Lisa Cavalerie, Philippe Mérot, Matt J Keeling, Catherine Cêtre-Sossah, Eric Cardinale, W John Edmunds
Rift Valley fever (RVF) is a major zoonotic and arboviral hemorrhagic fever. The conditions leading to RVF epidemics are still unclear, and the relative role of climatic and anthropogenic factors may vary between ecosystems. Here, we estimate the most likely scenario that led to RVF emergence on the island of Mayotte, following the 2006-2007 African epidemic. We developed the first mathematical model for RVF that accounts for climate, animal imports and livestock susceptibility, which is fitted to a 12-years dataset...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28730988/radiostereometric-analysis-of-keeled-versus-pegged-glenoid-components-in-total-shoulder-arthroplasty-a-randomized-feasibility-study
#19
RANDOMIZED CONTROLLED TRIAL
Trevor C Gascoyne, Sheila M B McRae, Sara L Parashin, Jeff R S Leiter, Martin J Petrak, Eric R Bohm, Peter B MacDonald
BACKGROUND: This study aimed to assess differences in the fixation and functional outcomes between pegged and keeled all-polyethylene glenoid components for standard total shoulder arthroplasty. METHODS: Patients were randomized to receive a keeled or pegged all-polyethylene glenoid component. We used model-based radiostereometric analysis (RSA) to assess glenoid fixation and subjective outcome measures to assess patient function. Follow-up examinations were completed at 6 weeks and 6, 12 and 24 months after surgery...
August 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28728785/operative-strategies-to-reduce-cerebral-embolic-events-during-on-and-off-pump-coronary-artery-bypass-surgery-a-stratified-prospective-randomized-trial
#20
Michael E Halkos, Aaron Anderson, Jose Nilo G Binongo, Anthony Stringer, Yi Lasanajak, Vinod H Thourani, Omar M Lattouf, Robert A Guyton, Kim T Baio, Eric Sarin, William B Keeling, N Renee Cook, Katherine Carssow, Alexis Neill, Kathryn E Glas, John D Puskas
OBJECTIVE: To determine the impact of different aortic clamping strategies on the incidence of cerebral embolic events during coronary artery bypass grafting (CABG). METHODS: Between 2012 and 2015, 142 patients with low-grade aortic disease (epiaortic ultrasound grade I/II) undergoing primary isolated CABG were studied. Those undergoing off-pump CABG were randomized to a partial clamp (n = 36) or clampless facilitating device (CFD; n = 36) strategy. Those undergoing on-pump CABG were randomized to a single-clamp (n = 34) or double-clamp (n = 36) strategy...
June 16, 2017: Journal of Thoracic and Cardiovascular Surgery
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