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https://www.readbyqxmd.com/read/27923216/efficacy-of-a-cellular-bone-allograft-for-foot-and-ankle-arthrodesis-and-revision-nonunion-procedures
#1
Travis J Dekker, Peter White, Samuel B Adams
BACKGROUND: Bone graft substitutes are often required in patients at risk for nonunion, and therefore, an allograft that most closely mimics an autograft is highly sought after. This study explored the utility and efficacy of a cellular bone allograft used for foot and ankle arthrodesis and revision nonunion procedures in a patient population at risk for nonunion. METHODS: An institutional review board-approved retrospective review of consecutive patients who underwent arthrodesis and revision nonunion procedures with a cellular bone allograft was performed at a single academic institution...
October 23, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27923202/structure-based-optimization-of-salt-bridge-network-across-the-complex-interface-of-ptpn4-pdz-domain-with-its-peptide-ligands-in-neuroglioma
#2
Xian Xiao, Qiang-Hua He, Li-Yan Yu, Song-Qing Wang, Yang Li, Hua Yang, Ai-Hua Zhang, Xiao-Hong Ma, Yu-Jie Peng, Bing Chen
The PTP non-receptor type 4 (PTPN4) is an important regulator protein in learning, spatial memory and cerebellar synaptic plasticity; targeting the PDZ domain of PTPN4 has become as attractive therapeutic strategy for human neuroglioma. Here, we systematically examined the complex crystal structures of PTPN4 PDZ domain with its known peptide ligands; a number of charged amino acid residues were identified in these ligands and in the peptide-binding pocket of PDZ domain, which can constitute a complicated salt-bridge network across the complex interface...
November 30, 2016: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/27923180/insight-into-the-structure-and-stability-of-tc-and-re-dmsa-complexes-a-computational-study
#3
Daniel Hernández-Valdés, Alejandro Blanco-González, Ariel García-Fleitas, Zalua Rodríguez-Riera, Giuseppe Meola, Roger Alberto, Ulises Jáuregui-Haza
Meso-2,3-dimercaptosuccinic acid (DMSA) is used in nuclear medicine as ligand for preparation of diagnostic and therapy radiopharmaceuticals. DMSA has been the subject of numerous investigations during the past three decades and new and significant information of the chemistry and pharmacology of DMSA complexes have emerged. In comparison to other ligands, the structure of some DMSA complexes is unclear up today. The structures and applications of DMSA complexes are strictly dependent on the chemical conditions of their preparation, especially pH and components ratio...
November 27, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/27922974/training-and-validating-a-deep-convolutional-neural-network-for-computer-aided-detection-and-classification-of-abnormalities-on-frontal-chest-radiographs
#4
Mark Cicero, Alexander Bilbily, Errol Colak, Tim Dowdell, Bruce Gray, Kuhan Perampaladas, Joseph Barfett
OBJECTIVES: Convolutional neural networks (CNNs) are a subtype of artificial neural network that have shown strong performance in computer vision tasks including image classification. To date, there has been limited application of CNNs to chest radiographs, the most frequently performed medical imaging study. We hypothesize CNNs can learn to classify frontal chest radiographs according to common findings from a sufficiently large data set. MATERIALS AND METHODS: Our institution's research ethics board approved a single-center retrospective review of 35,038 adult posterior-anterior chest radiographs and final reports performed between 2005 and 2015 (56% men, average age of 56, patient type: 24% inpatient, 39% outpatient, 37% emergency department) with a waiver for informed consent...
December 5, 2016: Investigative Radiology
https://www.readbyqxmd.com/read/27922970/morphometric-analysis-of-sella-turcica-using-cone-beam-computed-tomography
#5
Yasin Yasa, Ali Ocak, Ibrahim Sevki Bayrakdar, Suayip Burak Duman, Ismail Gumussoy
OBJECTIVE: The purpose of this study was to assess morphological shape and morphometric analysis of the sella turcica using cone beam computed tomography (CBCT) in different planes of section (coronal and sagittal). MATERIALS AND METHODS: CBCT images of 177 subjects of which 51 males and 126 females in the age group of 11 to 73 years were included in the study population. Linear dimensions which include the length, depth, diameter, and interclinoid distance were measured and the shape of sella turcica was analyzed...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922969/orbital-morphometry-a-computed-tomography-analysis
#6
Jaswinder Singh, Roselinda Ab Rahman, Zainul Ahmad Rajion, Johari Abdullah, Irfan Mohamad
INTRODUCTION: The human orbit is a complex anatomic region, which plays predominant role in the evaluation of craniofacial complex. A thorough understanding of the relationship of the distance from orbital rim to the important vital structures of the orbital apex is required for the surgeon to perform safe and effective surgery. OBJECTIVES: To evaluate and compare the depth and distances from various points of the orbital rim to the fissures and foramina of the orbital apex between genders in the local population...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922967/cervical-spine-deformity-in-long-standing-untreated-congenital-muscular-torticollis
#7
Mohammed Ahmed Hussein, In Sik Yun, Hanna Park, Yong Oock Kim
BACKGROUND: Congenital muscular torticollis (CMT) is a benign condition. With early diagnosis and appropriate management, it can be cured completely, leaving no residual deformity. However, long-standing, untreated CMT can lead to permanent craniofacial deformities and asymmetry. METHODS: Four adult patients presented to the author with long-standing, untreated CMT. Initial clinical assessment demonstrated tightness of the sternocleidomastoid muscle on the affected side...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922933/the-cross-sectional-association-between-vasomotor-symptoms-and-hemostatic-parameter-levels-in-postmenopausal-women
#8
Laura B Harrington, Marc Blondon, Mary Cushman, Andrew M Kaunitz, Jacques E Rossouw, Matthew A Allison, Lisa W Martin, Karen C Johnson, Jan Rosing, Nancy F Woods, Andrea Z LaCroix, Susan R Heckbert, Barbara McKnight, Nicholas L Smith
OBJECTIVE: Vasomotor symptoms (VMS) may be a marker of cardiovascular risk. We aimed to evaluate the cross-sectional association of VMS presence and severity with hemostatic parameter levels measured at baseline among Women's Health Initiative (WHI) Hormone Therapy trial postmenopausal participants. METHODS: This cross-sectional analysis included 2,148 postmenopausal women with measures of VMS presence and severity reported in the 4 weeks before WHI baseline, who were not using warfarin or hormone therapy and for whom the following baseline hemostatic parameters were measured within the WHI Cardiovascular Disease Biomarker Case-Control Study: antithrombin, plasminogen activator inhibitor-1, protein C antigen, total and free protein S antigen, total and free tissue factor pathway inhibitor, D-dimer, normalized activated protein C sensitivity ratio, and thrombin generation...
December 5, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27922893/craniofacial-fibrous-dysplasia-retrospective-study-on-the-relationship-between-the-tumor-volume-changes-and-the-circulating-serum-calcitonin-and-serum-alkaline-phosphatase
#9
Mohammed Ahmed Hussein, In Sik Yun, Bo Ok Kim, Yong Oock Kim
BACKGROUND: The purpose of this study was to determine the usefulness of serum alkaline phosphatase (ALP) and calcitonin in the follow-up of tumor volume changes in patients with craniofacial fibrous dysplasia. METHODS: Twenty patients with isolated craniofacial fibrous dysplasia were included, who met our criteria for long-term follow-up. Three-dimensional computed tomography scans were obtained, and tumor segmentation was performed. The tumor volume was measured preoperatively, immediate postoperative and during long-term follow-up...
December 5, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27922886/bioengineered-renal-cell-therapy-device-for-clinical-translation
#10
Christopher J Pino, Angela J Westover, Deborah A Buffington, H David Humes
The Bioartificial Renal Epithelial Cell System (BRECS), is a cell-based device to treat acute kidney injury through renal cell therapy from an extracorporeal circuit. To enable widespread implementation of cell therapy, the BRECS was designed to be cryopreserved as a complete device, cryostored, cryoshipped to an end-use site, thawed as a complete device, and employed in a therapeutic extracorporeal hemofiltration circuit. This strategy overcomes storage and distribution issues that have been previous barriers to cell therapy...
December 2, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27922845/continued-under-recognition-of-acute-respiratory-distress-syndrome-after-the-berlin-definition-what-is-the-solution
#11
John G Laffey, Tài Pham, Giacomo Bellani
PURPOSE OF REVIEW: Timely recognition of acute respiratory distress syndrome (ARDS) may allow for more prompt management and less exacerbation of lung injury. However, the absence of a diagnostic test for ARDS means that the diagnosis of ARDS requires clinician recognition in what is usually a complicated and evolving illness. We review data concerning the extent of recognition of ARDS in the era of the Berlin definition of ARDS. RECENT FINDINGS: ARDS continues to be under-recognized - even in the era of the more recent 'Berlin' definition, and significant delay in its recognition is common...
December 5, 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/27922808/vascular-assessment-for-transcatheter-aortic-valve-replacement-intravascular-ultrasound-compared-with-computed-tomography
#12
Essa Essa, Nader Makki, Peter Bittenbender, Quinn Capers, Barry George, Gregory Rushing, Juan Crestanello, Konstantinos Dean Boudoulas, Scott M Lilly
BACKGROUND: Assessment of the femoral and iliac arteries is essential prior to transcatheter aortic valve replacement (TAVR). It is critical for establishing candidacy for a femoral approach, and can help predict vascular complications. Although computed tomography angiography (CTA) is the standard imaging modality, it has limitations. OBJECTIVE: This study compared CTA with intravascular ultrasound (IVUS) in patients undergoing TAVR evaluation. METHODS: Fifteen patients undergoing pre-TAVR coronary angiography and hemodynamic assessment were recruited...
December 2016: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/27922723/the-american-indian-and-alaska-native-dentist-workforce-in-the-united-states
#13
Elizabeth Mertz, Cynthia Wides, Paul Gates
OBJECTIVES: The purpose of this article is to describe the American Indian/Alaska Native (AI/AN) dentist workforce, the general practice patterns of these providers, and their contributions to oral health care for AI/AN and underserved patients. METHODS: A national sample survey of underrepresented minority dentists was conducted in 2012 and received a 34 percent response rate for self-reported AI/AN dentists. Data were weighted for selection and response bias to be nationally representative...
December 6, 2016: Journal of Public Health Dentistry
https://www.readbyqxmd.com/read/27922660/combined-vision-and-wearable-sensors-based-system-for-movement-analysis-in-rehabilitation
#14
Sofija Spasojević, Tihomir V Ilić, Slađan Milanović, Veljko Potkonjak, Aleksandar Rodić, José Santos-Victor
BACKGROUND: Traditional rehabilitation sessions are often a slow, tedious, disempowering and non-motivational process, supported by clinical assessment tools, i.e. evaluation scales that are prone to subjective rating and imprecise interpretation of patient's performance. Poor patient motivation and insufficient accuracy are thus critical factors that can be improved by new sensing / processing technologies. OBJECTIVES: We aim to develop a portable and affordable system, suitable for home rehabilitation, which combines vision-based and wearable sensors...
December 6, 2016: Methods of Information in Medicine
https://www.readbyqxmd.com/read/27922631/dataset-of-eye-disease-related-proteins-analyzed-using-the-unfolding-mutation-screen
#15
Caitlyn L McCafferty, Yuri V Sergeev
A number of genetic diseases are a result of missense mutations in protein structure. These mutations can lead to severe protein destabilization and misfolding. The unfolding mutation screen (UMS) is a computational method that calculates unfolding propensities for every possible missense mutation in a protein structure. The UMS validation demonstrated a good agreement with experimental and phenotypical data. 15 protein structures (a combination of homology models and crystal structures) were analyzed using UMS...
December 6, 2016: Scientific Data
https://www.readbyqxmd.com/read/27922578/facet-joint-violation-during-percutaneous-pedicle-screw-placement-a-comparison-of-two-techniques
#16
Oliver Tannous, Ehsan Jazini, Tristan B Weir, Kelley E Banagan, Eugene Y Koh, D Greg Anderson, Daniel E Gelb, Steven C Ludwig
STUDY DESIGN: A comparative study of facet joint violation (FJV) using two percutaneous surgical techniques. OBJECTIVE: To compare the rate of iatrogenic FJV and medial pedicle wall breach between two methods of percutaneous pedicle screw instrumentation in the thoracic and lumbar spine. SUMMARY OF BACKGROUND DATA: Variable iatrogenic damage to the facet joints has been reported to occur with percutaneous pedicle screw techniques, compared with the open approach, which has been associated with adjacent segment disease...
December 2, 2016: Spine
https://www.readbyqxmd.com/read/27922539/effect-of-tomographic-operator-inaccuracies-and-respiratory-motion-on-pet-ct-lung-nodule-images-smearing
#17
Joël Daouk, Pascal Bailly, Roger Bouzerar, Marc-Étienne Meyer
BACKGROUND: In thoracic PET/computed tomography (CT) imaging, uptake foci usually appear smeared because of postreconstruction smoothing and respiratory motion. OBJECTIVE: The aim of the present study was to assess the respective contributions of the reconstruction process and respiratory motion on PET/CT images. MATERIALS AND METHODS: Thirty-one pulmonary lesions were studied. Free-breathing PET/CT acquisitions were followed by a 10-min respiratory-gated PET/CT acquisition...
December 2, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27922517/a-5-year-follow-up-of-study-patients-with-asymptomatic-iron-deficiency-anemia-using-a-nurse-led-pathway
#18
Sarah Ann Townsend, Danny Cheung, Elaine Horne, Rupert Ransford
A protocol-driven, systematic pathway was developed to allow rapid and coordinated investigation of patients with iron-deficiency anemia (IDA) in a nurse-delivered outpatient setting. The study objective was to assess the safety and efficacy of the pathway by 5-year outcome data for the exclusion of gastrointestinal (GI) malignancy. This is a 5-year follow-up study of 122 patients entered onto the pathway with negative initial upper and lower GI investigations. The study was conducted at Hereford County Hospital NHS Trust (a district general hospital serving 220,00 people)...
November 2016: Gastroenterology Nursing: the Official Journal of the Society of Gastroenterology Nurses and Associates
https://www.readbyqxmd.com/read/27922485/effect-of-abdominal-visceral-fat-on-the-development-of-new-erosive-oesophagitis-a-prospective-cohort-study
#19
Su Youn Nam, Young-Woo Kim, Bum Joon Park, Kum Hei Ryu, Il Ju Choi, Byung-Ho Nam, Hyun Boem Kim
OBJECTIVES: Although abdominal visceral fat has been associated with erosive oesophagitis in cross-sectional studies, there are no data that describe its longitudinal effects. We aimed to evaluate the longitudinal effects of abdominal visceral fat on the development of new erosive oesophagitis in patients who did not have erosive oesophagitis at baseline. MATERIALS AND METHODS: This was a single-centre prospective study. A total of 1503 participants without erosive oesophagitis at baseline were followed up for 34 months and they underwent oesophagogastroduodenoscopy and computed tomography at both baseline and during follow-up...
December 2, 2016: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/27922475/internal-consistency-and-convergent-validity-of-the-portuguese-versions-of-the-global-appraisal-of-individual-needs-initial-and-short-screener-validity-of-the-portuguese-gain-i-and-ss
#20
Heloísa Garcia Claro, Márcia Aparecida Ferreira de Oliveira, Ivan Filipe de Almeida Lopes Fernandes, Janet C Titus, Rosana Ribeiro Tarifa, Thais Fernandes Rojas, Paula Hayasi Pinho
: The goal of this article is to present evidence on the internal consistency and convergent validity of the Brazilian Portuguese versions of the Global Appraisal of Individual Needs-"Initial" and "Short Screener" versions. METHODS: One hundred sixty-eight individuals from an inpatient service and/or a community-based outpatient service located in São Paulo were interviewed using the Brazilian Portuguese versions of the instruments. The internal consistency of the instruments scales was computed, along with evidence for the convergent validity between corresponding subscales of the Initial and Short Screener instruments...
October 2016: Journal of Addictions Nursing
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