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https://www.readbyqxmd.com/read/28214027/arrested-geomorphic-trajectories-and-the-long-term-hidden-potential-for-change
#1
L Allan James
Geomorphic systems often experience morphological changes that define a trajectory over decadal time periods. These trends can be halted by natural inhibitors such as vegetation, knickpoints, bed armor, or bank cohesion, or by anthropogenic inhibitors such as revetment, levees, or dams. Details about where and how channels and floodplains are stabilized are often poorly understood, which poses a risk that modern projects could unwittingly remove critical stabilizing elements (inhibitors) and unleash an episode of rapid change...
February 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28213973/transforming-growth-factor-%C3%AE-induces-bone-marrow-mesenchymal-stem-cell-migration-via-noncanonical-signals-and-n-cadherin
#2
Maria Jose Dubon, Jinyeong Yu, Sanghyuk Choi, Ki-Sook Park
Transforming growth factor-beta (TGF-β) induces the migration and mobilization of bone marrow-derived mesenchymal stem cells (BM-MSCs) to maintain bone homeostasis during bone remodeling and facilitate the repair of peripheral tissues. Although many studies have reported the mechanisms through which TGF-β mediates the migration of various types of cells, including cancer cells, the intrinsic cellular mechanisms underlying cellular migration and mobilization of BM-MSCs mediated by TGF-β are unclear. In this study, we showed that TGF-β activated noncanonical signaling molecules, such as Akt, extracellular signal-regulated kinase 1/2 (ERK1/2), focal adhesion kinase (FAK), and p38, via TGF-β type I receptor in human BM-MSCs and murine BM-MSC-like ST2 cells...
February 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28213796/the-manchester-repair-an-instructional-video
#3
Caroline E Walsh, Lin L Ow, N Rajamaheswari, Peter L Dwyer
OBJECTIVE: The Manchester repair, developed in the UK by Donald, described in 1908, and later modified by Fothergill, is a well-studied and proven surgical treatment for uterovaginal prolapse when uterine preservation is desired. This operation is currently not widely performed in parts of the world (USA) but is becoming increasing popular in Europe. The objective of this video is to demonstrate our surgical technique and recommendations for successful completion of the procedure. METHODS: This patient is a 39-year-old woman with two previous vaginal deliveries who presented with a 1-year history of vaginal protrusion...
February 17, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28213446/acetylcholine-release-in-prefrontal-cortex-promotes-gamma-oscillations-and-theta-gamma-coupling-during-cue-detection
#4
W M Howe, H J Gritton, N Lusk, Erik A Roberts, Vaughn L Hetrick, Joshua D Berke, Martin Sarter
The capacity for using external cues to guide behavior ("cue detection") constitutes an essential aspect of attention and goal-directed behavior. The cortical cholinergic input system, via phasic increases in prefrontal acetylcholine release, plays an essential role in attention by mediating such cue detection. However, the relationship between cholinergic signaling during cue detection and neural activity dynamics in prefrontal networks remains unclear. Here we combined sub-second measures of cholinergic signaling, neurophysiological recordings, and cholinergic receptor blockade to delineate the cholinergic contributions to prefrontal oscillations during cue detection in rats...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213336/linking-the-mobilization-of-dissolved-organic-matter-in-catchments-and-its-removal-in-drinking-water-treatment-to-its-molecular-characteristics
#5
Julia Raeke, Oliver J Lechtenfeld, Jörg Tittel, Marieke R Oosterwoud, Katrin Bornmann, Thorsten Reemtsma
Drinking water reservoirs in the Northern Hemisphere are largely affected by the decadal-long increase in riverine dissolved organic carbon (DOC) concentrations. The removal of DOC in drinking water treatment is costly and predictions are needed to link DOC removal efficiency to its mobilization in catchments, both of which are determined by the molecular composition. To study the effect of hydrological events and land use on the molecular characteristics of dissolved organic matter (DOM), 36 samples from three different catchment areas in the German low mountain ranges, with DOC concentrations ranging from 3 to 32 mg L(-1), were examined...
February 8, 2017: Water Research
https://www.readbyqxmd.com/read/28211211/circulating-fibrocyte-mobilization-in-negative-pressure-wound-therapy
#6
Dezhi Chen, Yong Zhao, Zonghuan Li, Kangquan Shou, Xun Zheng, Pengcheng Li, Baiwen Qi, Aixi Yu
Non-healing diabetic wounds are difficult to treat. They also create heavy financial burdens for both patients and society. Negative pressure wound therapy (NPWT) has been adopted to treat intractable wounds and has proved to be effective. However, the mechanisms that underlie the effects of this treatment are not entirely understood. Circulating fibrocytes are unique haematopoietic-derived stem cells that have been reported to play a pivotal role in wound healing. Here, we have investigated the effect of NPWT on fibrocyte mobilization and the role of fibrocyte mobilization in the healing of diabetic wounds during NPWT...
February 17, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28210846/stem-cell-reviews-and-reports-cell-trafficking-stem-cell-mobilization-and-homing-and-hematopoiesis-section
#7
EDITORIAL
Louis M Pelus
No abstract text is available yet for this article.
February 16, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28210654/postoperative-rehabilitation-after-rotator-cuff-repair-a-web-based-survey-of-aana-and-aossm-members
#8
Scott Mollison, Jason J Shin, Alexander Glogau, R Cole Beavis
BACKGROUND: Postoperative rehabilitation after arthroscopic rotator cuff repair (ARCR) remains controversial and suffers from limited high-quality evidence. Therefore, appropriate use criteria must partially depend on expert opinion. HYPOTHESIS/PURPOSE: The purpose of the study was to determine and report on the standard and modified rehabilitation protocols after ARCR used by member orthopaedic surgeons of the American Orthopaedic Society for Sports Medicine (AOSSM) and the Arthroscopy Association of North America (AANA)...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28209173/moving-from-legality-to-reality-how-medical-abortion-methods-were-introduced-with-implementation-science-in-zambia
#9
Tamara Fetters, Ghazaleh Samandari, Patrick Djemo, Bellington Vwallika, Stephen Mupeta
BACKGROUND: Although abortion is technically legal in Zambia, the reality is far more complicated. This study describes the process and results of galvanizing access to medical abortion where abortion has been legal for many years, but provision severely limited. It highlights the challenges and successes of scaling up abortion care using implementation science to document 2 years of implementation. METHODS: An intervention between the Ministry of Health, University Teaching Hospital and the international organization Ipas, was established to introduce medical abortion and to address the lack of understanding and implementation of the country's abortion law...
February 16, 2017: Reproductive Health
https://www.readbyqxmd.com/read/28209144/modified-enhanced-recovery-after-surgery-eras-protocols-for-patients-with-obstructive-colorectal-cancer
#10
Dai Shida, Kyoko Tagawa, Kentaro Inada, Keiichi Nasu, Yasuji Seyama, Tsuyoshi Maeshiro, Sachio Miyamoto, Satoru Inoue, Nobutaka Umekita
BACKGROUND: Enhanced recovery after surgery (ERAS) protocols are now well-known to be useful for elective colorectal surgery, as they result in shorter hospital stays without adversely affecting morbidity. However, the efficacy and safety of ERAS protocols for patients with obstructive colorectal cancer have yet to be clarified. METHODS: We evaluated 122 consecutive resections for obstructive colorectal cancer performed between July 2008 and November 2012 at Tokyo Metropolitan Bokutoh Hospital...
February 16, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28209143/collaborative-leadership-and-the-implementation-of-community-based-fall-prevention-initiatives-a-multiple-case-study-of-public-health-practice-within-community-groups
#11
Maureen Markle-Reid, Cathy Dykeman, Jenny Ploeg, Caralyn Kelly Stradiotto, Angela Andrews, Susan Bonomo, Sarah Orr-Shaw, Niyati Salker
BACKGROUND: Falls among community-dwelling older adults are a serious public health concern. While evidence-based fall prevention strategies are available, their effective implementation requires broad cross-sector coordination that is beyond the capacity of any single institution or organization. Community groups comprised of diverse stakeholders that include public health, care providers from the public and private sectors and citizen volunteers are working to deliver locally-based fall prevention...
February 16, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28208957/open-reduction-and-internal-fixation-of-displaced-calcaneum-intra-articular-fractures-by-locking-calcaneal-plate
#12
Santosha, Shams Gulrez, Arambam Mahendra Singh, Sanjib Waikhom, Vishal Pakhrin, Sagnik Mukherjee, Rajkumar Debbarma, Prabhu Shrinivas Prashant
INTRODUCTION: Calcaneal fractures constitute the most common fractures in hindfoot. Lots of controversies exist in the management of calcaneal fractures but now-a-days, it is preferable to perform open reduction and internal fixation and early mobilizatation. AIM: To evaluate the functional outcome after open reduction and internal fixation of displaced intra-articular fractures of the calcaneum by locking calcaneal plate. MATERIALS AND METHODS: The study was conducted in the Department of Orthopaedic Surgery from September 2013 to April 2016...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208769/localisation-microscopy-of-breast-epithelial-erbb-2-receptors-and-gap-junctions-trafficking-after-%C3%AE-irradiation-neuregulin-1%C3%AE-and-trastuzumab-application
#13
Götz Pilarczyk, Ines Nesnidal, Manuel Gunkel, Margund Bach, Felix Bestvater, Michael Hausmann
In cancer, vulnerable breast epithelium malignance tendency correlates with number and activation of ErbB receptor tyrosine kinases. In the presented work, we observe ErbB receptors activated by irradiation-induced DNA injury or neuregulin- 1 β application, or alternatively, attenuated by a therapeutic antibody using high resolution fluorescence localization microscopy. The gap junction turnover coinciding with ErbB receptor activation and co-transport is simultaneously recorded. DNA injury caused by 4 Gray of 6 MeV photon γ -irradiation or alternatively neuregulin- 1 β application mobilized ErbB receptors in a nucleograde fashion-a process attenuated by trastuzumab antibody application...
February 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208468/colloidal-polycrystalline-monolayers-under-oscillatory-shear
#14
Ivo Buttinoni, Mathias Steinacher, Hendrik Th Spanke, Juho Pokki, Severin Bahmann, Bradley Nelson, Giuseppe Foffi, Lucio Isa
In this paper we probe the structural response to oscillatory shear deformations of polycrystalline monolayers of soft repulsive colloids with varying area fraction over a broad range of frequencies and amplitudes. The particles are confined at a fluid interface, sheared using a magnetic microdisk, and imaged through optical microscopy. The structural and mechanical response of soft materials is highly dependent on their microstructure. If crystals are well understood and deform through the creation and mobilization of specific defects, the situation is much more complex for disordered jammed materials, where identifying structural motifs defining plastically rearranging regions remains an elusive task...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208087/morphomechanical-alterations-in-the-medial-gastrocnemius-muscle-in-patients-with-a-repaired-achilles-tendon-associations-with-outcome-measures
#15
Wei-Chen Peng, Yi-Ping Chang, Yuan-Hung Chao, S N Fu, Christer Rolf, Tiffany Tf Shih, Sheng-Chu Su, Hsing-Kuo Wang
BACKGROUND: Functional deficits are found in ankles that have sustained an Achilles rupture. This study sought to evaluate and compare the morphomechanical characteristics of the medial gastrocnemius muscle in the legs of participants within six months of a unilateral Achilles repair to determine any correlations between those characteristics and objective outcomes and self-reported functional levels. METHODS: Fifteen participants were assessed via measurements of muscle morphologies (fascicle length, pennation angle, and muscle thickness) in a resting state, the mechanical properties of the proximal aponeurosis of the medial gastrocnemius muscle, the pennation angle during ramping maximal voluntary isometric contractions (MVIC), the heel raise test, and the Taiwan Chinese version of the Lower Extremity Functional Scale (LEFS-TC) questionnaire...
February 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28207914/memories-of-intimate-partner-violence-and-the-process-of-change
#16
Matan White, David E Pollio, Barry A Hong, Carol S North
BACKGROUND: One in 4 U.S. women experience intimate partner violence (IPV) during their lives. Despite the magnitude of this problem, little is known about the natural history of relationships involving IPV and how women exit them. METHODS: Narrative interviews were conducted using open-ended qualitative narrative techniques with a convenience sample of 7 women who had ended a relationship of ≥6 months' duration involving IPV at least 6 months ago. The interviews were audio recorded and transcribed...
February 2017: Annals of Clinical Psychiatry: Official Journal of the American Academy of Clinical Psychiatrists
https://www.readbyqxmd.com/read/28207750/functional-exploration-of-the-ift-a-complex-in-intraflagellar-transport-and-ciliogenesis
#17
Bing Zhu, Xin Zhu, Limei Wang, Yinwen Liang, Qianqian Feng, Junmin Pan
Intraflagellar transport (IFT) particles or trains are composed of IFT-A and IFT-B complexes. To assess the working mechanism of the IFT-A complex in IFT and ciliogenesis, we have analyzed ift43 mutants of Chlamydomnonas in conjunction with mutants of the other IFT-A subunits. An ift43 null mutant or a mutant with a partial deletion of the IFT43 conserved domain has no or short flagella. The mutants accumulate not only IFT-B but also IFT-Ain the short flagella, which is in contrast to an ift140 null mutant...
February 16, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28207574/laparoscopic-and-open-surgical-treatment-in-gastroduodenal-perforations-our-experience
#18
Rita Laforgia, Giovanni Balducci, Giuseppe Carbotta, Antonio Prestera, Maria Grazia Sederino, Giulia Casamassima, Marina Minafra, Pierluca Sallustio, Nicola Palasciano
INTRODUCTION: Peptic ulcer perforation (PPU) is a common surgical emergency and the mortality rate ranges 10% to 40%, especially in elderly patients. Laparoscopic repair achieved encouraging results. MATERIALS AND METHODS: We enrolled patients performing surgical repair for PPU from January 2007 to December 2015 in our surgical unit. The aim of this retrospective observational study was to compare the results of PPU laparoscopic repair with open technique. The following characteristics of patients were evaluated: age, sex and American Society of Anesthesiologists classification...
February 15, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28206794/the-devil-is-in-the-details-comparisons-of-episodic-simulations-of-positive-and-negative-future-events
#19
Vannia A Puig, Karl K Szpunar
Over the past decade, psychologists have devoted considerable attention to episodic simulation-the ability to imagine specific hypothetical events. Perhaps one of the most consistent patterns of data to emerge from this literature is that positive simulations of the future are rated as more detailed than negative simulations of the future, a pattern of results that is commonly interpreted as evidence for a positivity bias in future thinking. In the present article, we demonstrate across two experiments that negative future events are consistently simulated in more detail than positive future events when frequency of prior thinking is taken into account as a possible confounding variable and when level of detail associated with simulated events is assessed using an objective scoring criterion...
February 16, 2017: Emotion
https://www.readbyqxmd.com/read/28203542/robotic-trans-atrial-and-trans-mitral-ventricular-septal-resection
#20
REVIEW
W Randolph Chitwood
Localized ventricular septal hypertrophy, also known as idiopathic hypertrophic subaortic stenosis or idiopathic hypertrophic subaortic septal obstruction (IHSS), can create severe ventricular outflow obstruction. This often results in a high sub-aortic pressure gradient with potentially lethal symptoms. In 1960, Braunwald described the hemodynamic characteristics of IHSS, and thereafter, Morrow developed a trans-aortic approach to resect a large part of the ventricular septum, enlarging the outflow tract. The Morrow operation has remained the gold standard for surgically treating this pathology...
January 2017: Annals of Cardiothoracic Surgery
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