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https://www.readbyqxmd.com/read/28109138/adaptations-in-the-microarchitecture-and-load-distribution-of-maternal-cortical-and-trabecular-bone-in-response-to-multiple-reproductive-cycles-in-rats
#1
Chantal M J de Bakker, Allison R Altman-Singles, Yihan Li, Wei-Ju Tseng, Connie Li, X Sherry Liu
Pregnancy, lactation, and weaning result in dramatic changes in maternal calcium metabolism. In particular, the increased calcium demand during lactation causes a substantial degree of maternal bone loss. This reproductive bone loss has been suggested to be largely reversible, as multiple clinical studies have found that parity and lactation history have no adverse effect on post-menopausal fracture risk. However, the precise effects of pregnancy, lactation, and post-weaning recovery on maternal bone structure are not well understood...
January 21, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28109122/bleeding-in-the-retroperitoneal-space-under-the-broad-ligament-as-a-result-of-uterine-perforation-after-dilatation-and-curettage-report-of-a-case
#2
Hisato Tokuda, Satoshi Nakago, Hiroki Kato, Tetsuya Oishi, Fumikazu Kotsuji
Uterine perforation, a complication of dilation and curettage, is typically recognized immediately after the procedure by clinical symptoms of peritoneal irritation resulting from intraperitoneal bleeding. Our patient complained of having an uncomfortable feeling, slight dizziness, palpitation in the sitting position and abdominal discomfort but did not show signs of peritoneal irritation 24 h after dilation and curettage. However, she suddenly complained of abdominal pain. Tenderness and rebound tenderness were detected at the lower abdominal wall...
January 21, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28109103/-value-of-diffusion-weighted-imaging-1-h-magnetic-resonance-spectroscopy-and-3d-whole-brain-arterial-spin-labeling-in-the-diagnosis-of-medulloblastoma
#3
Dong-Liang Cheng, Wen-Sheng Wang, Yi-Xin Hu, Meng-Lin Chen, Ge Wen, Li-Na Cheng, Jing Wu, Liu-Qing Yan
OBJECTIVE: To explore the value of diffusion-weighted imaging (DWI), (1)H-magnetic resonance spectroscopy (1H-MRS) and 3D whole-brain arterial spin labeling (3D ASL) in the diagnosis of medulloblastoma in the posterior cranial fossa. METHODS: The magnetic resonance imaging (MRI) findings of 16 patients with pathologically confirmed medulloblastoma in the posterior cranial fossa were analyzed retrospectively. All the patients were examined with plane and enhanced brain MRI scans; 5 patients also underwent examinations with DWI, 12 with MRS, and 5 with 3D ASL...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109070/peste-des-petits-ruminants-risk-factors-and-space-time-clusters-in-mymensingh-bangladesh
#4
M S Rony, A K M A Rahman, M M Alam, N Dhand, M P Ward
Using a hospital-based case-control study design, our aim was to identify risk factors for-and space-time clusters of-Peste des Petits Ruminants (PPR) in Mymensingh, Bangladesh. Three hundred and eighty PPR cases diagnosed between January 2005 and December 2014 at the Bangladesh Agricultural University Veterinary Teaching Hospital (BAUVTH) were selected; three controls per case from BAUVTH were then selected (n = 1,048). From records, data extracted included information on date of report, location, age, breed, sex and body weight of goats...
January 21, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28108623/tumor-induced-stromal-stat1-accelerates-breast-cancer-via-deregulating-tissue-homeostasis
#5
Victoria R Zellmer, Patricia M Schnepp, Sarah L Fracci, Xuejuan Tan, Erin N Howe, Siyuan Zhang
: The tumor microenvironment (TME) is a dynamic tissue space in which the tumor exists, plays a significant role in tumor initiation, and is a key contributor in cancer progression; however, little is known about tumor-induced changes in the adjacent tissue stroma. Herein, tumor-induced changes in the TME were explored at the morphological and molecular level to further understand cancer progression. Tumor-adjacent mammary glands (TAGs) displayed altered branching morphology, expansion of myofibroblasts, and increased mammosphere formation, broadly suggesting a tumor-induced field effect...
January 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28108618/timing-of-decompressive-hemicraniectomy-for-stroke-a-nationwide-inpatient-sample-analysis
#6
Hormuzdiyar H Dasenbrock, Faith C Robertson, Henrikas Vaitkevicius, M Ali Aziz-Sultan, Donovan Guttieres, Ian F Dunn, Rose Du, William B Gormley
BACKGROUND AND PURPOSE: Previous clinical trials were not designed to discern the optimal timing of decompressive craniectomy for stroke, and the ideal surgical timing in patients with space-occupying infarction who do not exhibit deterioration within 48 hours is debated. METHODS: Patients undergoing decompressive craniectomy for stroke were extracted from the Nationwide Inpatient Sample (2002-2011). Multivariable logistic regression evaluated the association of surgical timing with mortality, discharge to institutional care, and poor outcome (a composite end point including death, tracheostomy and gastrostomy, or discharge to institutional care)...
January 20, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28108575/uniportal-thoracoscopic-decortication-for-pleural-empyema-and-the-role-of-ultrasonographic-preoperative-staging%C3%A2
#7
Stefano Bongiolatti, Luca Voltolini, Sara Borgianni, Roberto Borrelli, Giorgia Tancredi, Domenico Viggiano, Alessandro Gonfiotti
OBJECTIVES: The surgical approach to chronic pleural empyema is still controversial. Video-assisted thoracic surgery (VATS) debridement and decortication has shown favourable outcomes, while the uniportal VATS (U-VATS) approach is still anecdotal. We report our experience with ultrasonographic (US) preoperative staging followed by U-VATS decortication for pleural empyema. METHODS: We performed a retrospective analysis of patients who underwent surgical treatment of stage II and stage III pleural empyema from 2012 to 2015...
January 19, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28108548/the-effect-of-left-ventricular-pacing-on-transmural-activation-delay-in-myopathic-human-hearts
#8
Andreu Porta-Sánchez, Paul Angaran, Stéphane Massé, Krishnakumar Nair, Talha Farid, Karthikeyan Umapathy, John Asta, Sigfus Gizurarson, Kumaraswamy Nanthakumar
AIMS: Left ventricular (LV) epicardial pacing (LVEpiP) in human myopathic hearts does not decrease global epicardial activation delay compared with right ventricular (RV) endocardial pacing (RVEndoP); however, the effect on transmural activation delay has not been evaluated. To characterize the transmural electrical activation delay in human myopathic hearts during RVEndoP and LVEpiP compared with global epicardial activation delay. METHODS AND RESULTS: Explanted hearts from seven patients (5 male, 46 ± 10 years) undergoing cardiac transplantation were Langendorff-perfused and mapped using an epicardial sock electrode array (112 electrodes) and 25 transmural plunge needles (four electrodes, 2 mm spacing), for a total of 100 unipolar transmural electrodes...
January 20, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28108476/dynamic-analysis-of-the-mesenchymal-epithelial-transition-of-blood-brain-barrier-forming-glia-in-drosophila
#9
Tina Schwabe, Xiaoling Li, Ulrike Gaul
During development, many epithelia are formed by a mesenchymal-epithelial transition (MET). Here, we examine the major stages and underlying mechanisms of MET during blood-brain barrier formation in Drosophila We show that contact with the basal lamina is essential for the growth of the barrier-forming subperineurial glia (SPG). Septate junctions (SJs), which provide insulation of the paracellular space, are not required for MET, but are necessary for the establishment of polarized SPG membrane compartments...
January 20, 2017: Biology Open
https://www.readbyqxmd.com/read/28108428/identifying-topics-for-e-cigarette-user-generated-contents-a-case-study-from-multiple-social-media-platforms
#10
Yongcheng Zhan, Ruoran Liu, Qiudan Li, Scott James Leischow, Daniel Dajun Zeng
BACKGROUND: Electronic cigarette (e-cigarette) is an emerging product with a rapid-growth market in recent years. Social media has become an important platform for information seeking and sharing. We aim to mine hidden topics from e-cigarette datasets collected from different social media platforms. OBJECTIVE: This paper aims to gain a systematic understanding of the characteristics of various types of social media, which will provide deep insights into how consumers and policy makers effectively use social media to track e-cigarette-related content and adjust their decisions and policies...
January 20, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28108306/bone-remodeling-as-a-spatial-evolutionary-game
#11
Marc D Ryser, Kevin A Murgas
Bone remodeling is a complex process involving cell-cell interactions, biochemical signaling and mechanical stimuli. Early models of the biological aspects of remodeling were non-spatial and focused on the local dynamics at a fixed location in the bone. Several spatial extensions of these models have been proposed, but they generally suffer from two limitations: first, they are not amenable to analysis and are computationally expensive, and second, they neglect the role played by bone-embedded osteocytes. To address these issues, we developed a novel model of spatial remodeling based on the principles of evolutionary game theory...
January 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28108305/efficient-dynamic-programming-algorithm-with-prior-knowledge-for-protein-%C3%AE-strand-alignment
#12
Mostafa Sabzekar, Mahmoud Naghibzadeh, Javad Sadri
One of the main tasks towards the prediction of protein β-sheet structure is to predict the native alignment of β-strands. The alignment of two β-strands defines similar regions that may reflect functional, structural, or evolutionary relationships between them. Therefore, any improvement in β-strands alignment not only reduces the computational search space but also improves β-sheet structure prediction accuracy. To define the alignment scores, previous studies utilized predicted residue-residue contacts (contact maps)...
January 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28108048/bullous-pseudobullous-pustular-dermatoses
#13
Mark R Wick
Several dermatoses are typified by the formation of spaces (blisters; bullae) within or beneath the epidermis. These may be acellular or filled with particular species of inflammatory cells. Etiological categories include infectious, immune-mediated, genetic, drug-related, and idiopathic lesions. Examples of such disorders include impetigo, Herpes virus infections, pemphigus, bullous pemphigoid and pemphigoid gestationis, epidermolysis bullosa acquisita, IgA-related dermatoses, inherited epidermolysis bullosa variants, Hailey-Hailey disease, and porphyria cutanea tarda...
December 14, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28108004/nonlinear-svm-dtc-for-induction-motor-drive-using-input-output-feedback-linearization-and-high-order-sliding-mode-control
#14
Abdelkarim Ammar, Amor Bourek, Abdelhamid Benakcha
This paper presents a nonlinear Direct Torque Control (DTC) strategy with Space Vector Modulation (SVM) for an induction motor. A nonlinear input-output feedback linearization (IOFL) is implemented to achieve a decoupled torque and flux control and the SVM is employed to reduce high torque and flux ripples. Furthermore, the control scheme performance is improved by inserting a super twisting speed controller in the outer loop and a load torque observer to enhance the speed regulation. The combining of dual nonlinear strategies ensures a good dynamic and robustness against parameters variation and disturbance...
January 17, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28107843/staff-perspectives-regarding-the-implementation-of-a-yoga-intervention-with-chronic-pain-self-management-in-a-clinical-setting
#15
Emily A Waddington, Reid K Rogers Fuller, Rachel C K Barloon, Grace H Comiskey, Jennifer Dickman Portz, Helen Holmquist-Johnson, Arlene A Schmid
Chronic pain affects millions of Americans and can be addressed through multiple modalities, interventions, and strategies. Yoga and self-management have been proven effective in treating chronic pain, but little research has been conducted on the feasibility and implementation barriers related to these alternative intervention forms. In our qualitative study, we examined staff perceptions regarding the feasibility of implementing yoga along with established self-management at a pain management clinic in Colorado...
February 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28107826/alveolar-sarcoma-of-the-parapharyngeal-space-a-case-report
#16
Sarina Navarro, Jose F Carrillo, Dorian Yarih Garcia Ortega, Kuauhyama Luna-Ortiz
No abstract text is available yet for this article.
January 17, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28107810/hierarchically-ordered-porous-and-high-volume-poly-caprolactone-pcl-microchannel-scaffolds-enhanced-axon-growth-in-transected-spinal-cords
#17
Dena Shahriari, Jacob Y Koffler, Mark H Tuszynski, Wendy M Campana, Jeff S Sakamoto
The goal of this work was to design nerve guidance scaffolds with a unique architecture to maximize the open volume available for nerve growth. Poly caprolactone (PCL) was selected as the scaffold material based on its biocompatibility and month-long degradation. Yet, dense PCL does not exhibit suitable properties such as porosity, stiffness, strength and cell adhesion to function as an effective nerve guidance scaffold. To address these shortcomings, PCL was processed using a modified salt-leaching technique to create uniquely controlled interconnected porosity...
January 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28107739/on-the-synthesis-of-nanostructured-akermanite-scaffolds-via-space-holder-method-the-effect-of-the-spacer-size-on-the-porosity-and-mechanical-properties
#18
Aliakbar Najafinezhad, Majid Abdellahi, Sepideh Nasiri-Harchegani, Ali Soheily, Mohammadsaleh Khezri, Hamid Ghayour
In the present study, for the first time, the space holder method was used to prepare akermanite scaffolds with high porous structures, high interconnectivity, and high compressive strength, while the role of different spacer sizes on the akermanite scaffold properties was also evaluated. The results showed that the increase in the NaCl particle size which was used as spacer leads to an increase of the pore size and interconnectivity and a decrease of compressive strength. When the size of the spacer was 420-600µm and more than 600µm, a total porosity of 82 and 83% and a compressive strength of 0...
January 3, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28107655/discrimination-between-naphthacene-and-triphenylene-using-cellulose-tris-4-methylbenzoate-and-cellulose-tribenzoate-a-computational-study
#19
Yusuke Murakami, Tohru Shibata, Kazuyoshi Ueda
The mechanisms of naphthacene and triphenylene discrimination using commercially available cellulose tris(4-methylbenzoate) (CMB) and cellulose tribenzoate (CB) chiral stationary phases were investigated using molecular mechanics calculations. Naphthacene and triphenylene could be separated by liquid chromatography on CMB and CB, with triphenylene being eluted earlier than naphthacene on both phases. However, the corresponding separation factor is much larger for CMB than for CB. The docking of these polycyclic aromatic hydrocarbons to the above polymers suggested that the most important sites of CMB and CB for interacting with these hydrocarbons are located at equivalent positions, featuring a space surrounded by main chain glucose units and benzoyl side chains...
January 7, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28107498/delineating-substrate-diversity-of-disparate-short-chain-dehydrogenase-reductase-from-debaryomyces-hansenii
#20
Arindam Ghatak, Nagakumar Bharatham, Anirudh P Shanbhag, Santanu Datta, Janani Venkatraman
Short-chain dehydrogenase reductases (SDRs) have been utilized for catalyzing the reduction of many aromatic/aliphatic prochiral ketones to their respective alcohols. However, there is a paucity of data that elucidates their innate biological role and diverse substrate space. In this study, we executed an in-depth biochemical characterization and substrate space mapping (with 278 prochiral ketones) of an unannotated SDR (DHK) from Debaryomyces hansenii and compared it with structurally and functionally characterized SDR Synechococcus elongatus...
2017: PloS One
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