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https://www.readbyqxmd.com/read/28534135/automated-algorithm-for-counting-microbleeds-in-patients-with-familial-cerebral-cavernous-malformations
#1
Xiaowei Zou, Blaine L Hart, Marc Mabray, Mary R Bartlett, Wei Bian, Jeffrey Nelson, Leslie A Morrison, Charles E McCulloch, Christopher P Hess, Janine M Lupo, Helen Kim
PURPOSE: Familial cerebral cavernous malformation (CCM) patients present with multiple lesions that can grow both in number and size over time and are reliably detected on susceptibility-weighted imaging (SWI). Manual counting of lesions is arduous and subject to high variability. We aimed to develop an automated algorithm for counting CCM microbleeds (lesions <5 mm in diameter) on SWI images. METHODS: Fifty-seven familial CCM type-1 patients were included in this institutional review board-approved study...
May 22, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28520898/pyrenoid-loss-impairs-carbon-concentrating-mechanism-induction-and-alters-primary-metabolism-in-chlamydomonas-reinhardtii
#2
Madeline C Mitchell, Gergana Metodieva, Metodi V Metodiev, Howard Griffiths, Moritz T Meyer
Carbon-concentrating mechanisms (CCMs) enable efficient photosynthesis and growth in CO2-limiting environments, and in eukaryotic microalgae localisation of Rubisco to a microcompartment called the pyrenoid is key. In the model green alga Chlamydomonas reinhardtii, Rubisco preferentially relocalises to the pyrenoid during CCM induction and pyrenoid-less mutants lack a functioning CCM and grow very poorly at low CO2. The aim of this study was to investigate the CO2 response of pyrenoid-positive (pyr+) and pyrenoid-negative (pyr-) mutant strains to determine the effect of pyrenoid absence on CCM induction and gene expression...
May 18, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28520892/on-the-cradle-of-ccm-research-discovery-development-and-challenges-ahead
#3
Aaron Kaplan
Herein, 40 years after its discovery, I briefly and critically survey the development of ideas that propelled research on CO2-concentrating mechanisms (CCMs; a term proposed by Dean Price) of phytoplankton, mainly focusing on cyanobacteria. This is not a comprehensive review on CCM research, but a personal view on the past developments and challenges that lie ahead.
May 18, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28515476/spin-orbit-torque-induced-magnetic-domain-wall-motion-in-ta-cofe-nanowires-with-sloped-perpendicular-magnetic-anisotropy
#4
Yue Zhang, Shijiang Luo, Xiaofei Yang, Chang Yang
In materials with the gradient of magnetic anisotropy, spin-orbit-torque-induced magnetization behaviour has attracted attention because of its intriguing scientific principle and potential application. Most of the magnetization behaviours microscopically originate from magnetic domain wall motion, which can be precisely depicted using the standard cooperative coordinate method (CCM). However, the domain wall motion in materials with the gradient of magnetic anisotropy using the CCM remains lack of investigation...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28510761/the-diversity-of-carbon-dioxide-concentrating-mechanisms-in-marine-diatoms-as-inferred-from-their-genetic-content
#5
Chen Shen, Christopher L Dupont, Brian M Hopkinson
Marine diatoms are one of the most ecologically significant primary producers in the ocean. Most diatoms use a CO2-concentrating mechanism (CCM) to overcome the scarcity of CO2 in the ocean and limitations of the carbon-fixing enzyme Rubisco. However, the CCMs in model diatoms differ substantially in their genetic make-up and structural organization. To assess the extent of CCM diversity in marine diatoms more generally, we analyzed genome and transcriptome data from 31 diatom strains to identify putative CCM genes, examine the overall CCM architecture, and study CCM development in the context of the evolutionary history of these diatoms...
May 16, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28509895/-chronic-malnutrition-among-children-under-five-in-peru-a-spatial-analysis-of-nutritional-data-2010-2016
#6
Akram Hernández-Vásquez, Elena Tapia-López
OBJECTIVE: Peru has implemented various strategies seeking to improve nutritional indicators in children under five years old. However, high prevalence of malnutrition in some regions still remains. The aim of this study was to assess changes in regional prevalence and to determine the presence of district conglomerates with a high prevalence of chronic childhood malnutrition (CCM) in 2010 and 2016. METHODS: A comparative descriptive analysis by regions and a district-level spatial analysis were conducted employing indicators reported by the Nutritional Status Information System...
May 19, 2017: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/28509888/cardiac-contractility-modulation-a-technical-guide-for-device-implantation
#7
Jürgen Kuschyk, Axel Kloppe, Stephan Schmidt-Schweda, Hendrik Bonnemeier, Benny Rousso, Susanne Röger
This article provides a technical description of common implant practice for delivery of cardiac contractility modulation (CCM) therapy to heart failure patients. As of September 2016, the authors of this article collectively have been involved with more than 400 system implantations in five medical centers, beginning with the advent of CCM therapy approximately 12 years ago. CCM therapy has been evaluated in a variety of studies, and was shown to be safe and effective and of benefit to patient quality of life and exercise capacity...
2017: Reviews in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28505361/the-possible-evolution-and-future-of-co2-concentrating-mechanisms
#8
John A Raven, John Beardall, Patricia Sánchez-Baracaldo
CO2-concentrating mechanisms (CCMs), based either on active transport of inorganic carbon (biophysical CCMs) or on biochemistry involving supplementary carbon fixation into C4 acids (C4 and CAM), play a major role in global primary productivity. However, the ubiquitous CO2-fixing enzyme in autotrophs, Rubisco, evolved at a time when atmospheric CO2 levels were very much higher than today and O2 was very low and, as CO2 and O2 approached (by no means monotonically), today's levels, at some time subsequently many organisms evolved a CCM that increased the supply of CO2 and decreased Rubisco oxygenase activity...
May 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28503485/surgical-approaches-for-symptomatic-cerebral-cavernous-malformations-of-the-thalamus-and-brainstem
#9
Dale Ding, Robert M Starke, R Webster Crowley, Kenneth C Liu
OBJECTIVE: Surgical resection of thalamic and brainstem cerebral cavernous malformations (CCMs) is associated with significant operative morbidity, but it may be outweighed, in some cases, by the neurological damage from recurrent hemorrhage in these eloquent areas. The goals of this retrospective cohort study are to describe the technical nuances of surgical approaches and determine the postoperative outcomes for CCMs of the thalamus and brainstem. MATERIALS AND METHODS: We reviewed an institutional database of patients harboring thalamic or brainstem CCMs, who underwent surgical resection from 2010 to 2014...
March 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/28500274/combined-hmg-coa-reductase-and-prenylation-inhibition-in-treatment-of-ccm
#10
Sayoko Nishimura, Ketu Mishra-Gorur, JinSeok Park, Yulia V Surovtseva, Said M Sebti, Andre Levchenko, Angeliki Louvi, Murat Gunel
Cerebral cavernous malformations (CCMs) are common vascular anomalies that develop in the central nervous system and, more rarely, the retina. The lesions can cause headache, seizures, focal neurological deficits, and hemorrhagic stroke. Symptomatic lesions are treated according to their presentation; however, targeted pharmacological therapies that improve the outcome of CCM disease are currently lacking. We performed a high-throughput screen to identify Food and Drug Administration-approved drugs or other bioactive compounds that could effectively suppress hyperproliferation of mouse brain primary astrocytes deficient for CCM3...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28492932/population-based-prevalence-of-cerebral-cavernous-malformations-in-older-adults-mayo-clinic-study-of-aging
#11
Kelly D Flemming, Jonathan Graff-Radford, Jeremiah Aakre, Kejal Kantarci, Giuseppe Lanzino, Robert D Brown, Michelle M Mielke, Rosebud O Roberts, Walter Kremers, David S Knopman, Ronald C Petersen, Clifford R Jack
Importance: The prevalence of cerebral cavernous malformation (CCM) is unknown. Case ascertainment in most previous studies was based on autopsy data or clinical convenience samples, often without detailed clinical or radiologic information. Objective: To determine the prevalence of CCM in a population-based sample of older adults. Design, Setting, and Participants: This prospective imaging study included 4721 participants aged 50 to 89 years who were enrolled between January 1, 2004, and December 15, 2015, in the Mayo Clinic Study of Aging, a longitudinal, population-based study of residents of Olmsted County, Minnesota...
May 8, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28489816/endothelial-tlr4-and-the-microbiome-drive-cerebral-cavernous-malformations
#12
Alan T Tang, Jaesung P Choi, Jonathan J Kotzin, Yiqing Yang, Courtney C Hong, Nicholas Hobson, Romuald Girard, Hussein A Zeineddine, Rhonda Lightle, Thomas Moore, Ying Cao, Robert Shenkar, Mei Chen, Patricia Mericko, Jisheng Yang, Li Li, Ceylan Tanes, Dmytro Kobuley, Urmo Võsa, Kevin J Whitehead, Dean Y Li, Lude Franke, Blaine Hart, Markus Schwaninger, Jorge Henao-Mejia, Leslie Morrison, Helen Kim, Issam A Awad, Xiangjian Zheng, Mark L Kahn
Cerebral cavernous malformations (CCMs) are a cause of stroke and seizure for which no effective medical therapies yet exist. CCMs arise from the loss of an adaptor complex that negatively regulates MEKK3-KLF2/4 signalling in brain endothelial cells, but upstream activators of this disease pathway have yet to be identified. Here we identify endothelial Toll-like receptor 4 (TLR4) and the gut microbiome as critical stimulants of CCM formation. Activation of TLR4 by Gram-negative bacteria or lipopolysaccharide accelerates CCM formation, and genetic or pharmacologic blockade of TLR4 signalling prevents CCM formation in mice...
May 10, 2017: Nature
https://www.readbyqxmd.com/read/28484556/clear-cell-meningioma-intraoperative-diagnosis-by-squash-cytology-case-report-and-review-of-the-literature
#13
Vaishali Walke, Shantilal M Sisodia, Sanjay Bijwe, Purwa Patil
Clear-cell meningioma (CCM), an unusual subset of meningioma has prominent, clear-cell morphology. It is a wolf in sheep's clothing characterized by benign histologic attributes, but tendency for recurrence (61%) and metastasis. Therefore, WHO has classified it as grade II meningioma. Fine-needle aspiration cytology diagnosis is simple, rapid, cost-effective and reliable procedure primarily aimed at preoperative diagnosis of advanced and metastatic extracranial tumor. Preoperative and/or intraoperative cytodiagnosis of CCM demand expertise in the evaluation of cytology smears...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484060/prediction-of-primary-care-depression-outcomes-at-six-months-validation-of-doc-6-%C3%A2
#14
Kurt B Angstman, Gregory M Garrison, Cesar A Gonzalez, Daniel W Cozine, Elizabeth W Cozine, David J Katzelnick
BACKGROUND: The goal of this study was to develop and validate an assessment tool for adult primary care patients diagnosed with depression to determine predictive probability of clinical outcomes at 6 months. METHODS: We retrospectively reviewed 3096 adult patients enrolled in collaborative care management (CCM) for depression. Patients enrolled on or before December 31, 2013, served as the training set (n = 2525), whereas those enrolled after that date served as the preliminary validation set (n = 571)...
May 2017: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/28475703/cibinetide-improves-corneal-nerve-fiber-abundance-in-patients-with-sarcoidosis-associated-small-nerve-fiber-loss-and-neuropathic-pain
#15
Daniel A Culver, Albert Dahan, Daiva Bajorunas, Maria Jeziorska, Monique van Velzen, Leon P H J Aarts, Jinny Tavee, Martijn R Tannemaat, Ann N Dunne, Rita I Kirk, Ioannis N Petropoulos, Anthony Cerami, Rayaz A Malik, Michael Brines
Purpose: Sarcoidosis frequently is complicated by small nerve fiber loss (SNFL), which can be quantified using corneal confocal microscopy (CCM). Prior studies suggest that the innate repair receptor agonist cibinetide reverses corneal nerve loss. This phase 2b, 28-day, randomized trial of 64 subjects with sarcoid-associated SNFL and neuropathic pain assessed the effect of cibinetide on corneal nerve fiber area (CNFA) and regenerating intraepidermal fibers (GAP-43+) as surrogate endpoints for disease modification, pain severity, and functional capacity (6-minute walk test [6MWT])...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28474749/loss-of-smarce1-expression-is-a-specific-diagnostic-marker-of-clear-cell-meningioma-a-comprehensive-immunophenotypical-and-molecular-analysis
#16
Arnault Tauziede-Espariat, Béatrice Parfait, Aurore Besnard, Joëlle Lacombe, Johan Pallud, Sanaa Tazi, Stéphanie Puget, Guillaume Lot, Benoît Terris, Julie Cohen, Michel Vidaud, Dominique Figarella-Branger, Franck Monnien, Marc Polivka, Homa Adle-Biassette, Pascale Varlet
Clear cell meningioma (CCM) is a rare grade II histopathological subtype that usually occurs in young patients and displays high recurrence rate. Germline SMARCE1 mutations have been described in hereditary forms of this disease and more recently in small syndromic and sporadic CCM series. The diagnostic value of SMARCE1 in distinguishing between CCM and other meningioma variants has not been yet established. The aim of our study was to investigate the status of SMARCE1 in a series of CCMs and its morphological mimickers...
May 5, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28473673/feasibility-of-implementing-chronic-care-model-in-the-malaysian-public-primary-care-setting
#17
F Ariffin, A S Ramli, M H Daud, J Haniff, S Abdul-Razak, S Selvarajah, V K Lee, S F Tong, M A Bujang
INTRODUCTION: Non-communicable diseases (NCD) is a global health threat. the Chronic Care Model (CCM) was proven effective in improving NCD management and outcomes in developed countries. Evidence from developing countries including Malaysia is limited and feasibility of CCM implementation has not been assessed. this study intends to assess the feasibility of public primary health care clinics (PHC) in providing care according to the CCM. METHODOLOGY: A cross-sectional survey was conducted to assess the public PHC ability to implement the components of CCM...
April 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28463091/curcumin-increases-efficiency-of-%C3%AE-irradiation-in-gliomas-by-inhibiting-hedgehog-signaling-pathway
#18
Xiangqi Meng, Jinquan Cai, Jichao Liu, Bo Han, Fei Gao, Weida Gao, Yao Zhang, Jinwei Zhang, Zhefeng Zhao, Chuanlu Jiang
It was reported that γ-irradiation had a controversial therapeutic effect on glioma cells. We aimed to investigate the cytotoxic effect on the glioma cells induced by γ-irradiation and explore the treatment to rescue the phenotype alteration of remaining cells. We used transwell assay to detect the glioma cell invasion and migration capacity. Cell proliferation and apoptosis were tested by the CCK-8 assay and flow cytometry respectively. Western Blot was used to detect the activity of Hedgehog signaling pathway and Epithelial-to-Mesenchymal Transition (EMT) status...
May 2, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28447834/perspectives-of-low-income-chronically-ill-patients-on-complex-care-management
#19
Alice Y Mao, Rachel Willard-Grace, Leslie Dubbin, Louise Aronson, Alicia Fernandez, Nancy J Burke, Julia Finch, Elizabeth Davis
INTRODUCTION: Low-income, chronically ill adults disproportionately experience poor health outcomes despite increased health care use and costs. Complex care management (CCM) programs are an innovative approach to improving outcomes for these patients, but little is known about the patients' experiences in CCM programs in safety net primary care settings. METHOD: The authors conducted semistructured interviews with 13 CCM participants in a safety net primary care clinic to explore their perceptions of their health and their experiences with CCM...
April 27, 2017: Families, Systems & Health: the Journal of Collaborative Family Healthcare
https://www.readbyqxmd.com/read/28444330/progress-and-challenges-of-engineering-a-biophysical-carbon-dioxide-concentrating-mechanism-into-higher-plants
#20
Benjamin D Rae, Benedict M Long, Britta Förster, Nghiem D Nguyen, Christos N Velanis, Nicky Atkinson, Wei Yih Hee, Bratati Mukherjee, G Dean Price, Alistair J McCormick
Growth and productivity in important crop plants is limited by the inefficiencies of the C3 photosynthetic pathway. Introducing CO2-concentrating mechanisms (CCMs) into C3 plants could overcome these limitations and lead to increased yields. Many unicellular microautotrophs, such as cyanobacteria and green algae, possess highly efficient biophysical CCMs that increase CO2 concentrations around the primary carboxylase enzyme, Rubisco, to enhance CO2 assimilation rates. Algal and cyanobacterial CCMs utilize distinct molecular components, but share several functional commonalities...
April 24, 2017: Journal of Experimental Botany
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