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https://www.readbyqxmd.com/read/29330938/predictive-value-of-neutrophil-to-lymphocyte-ratio-in-long-term-outcomes-of-left-main-and-or-three-vessel-disease-in-patients-with-acute-myocardial-infarction
#1
Na Xu, Xiao-Fang Tang, Yi Yao, Xueyan- Zhao, Jue- Chen, Zhan- Gao, Yuejin- Yang, Run-Lin Gao, Bo Xu, Jin-Qing Yuan
OBJECTIVES: We sought to evaluate the independent predictive value of left main disease (LMD) and/or three-vessel disease (LMD/3VD) in acute myocardial infarction (AMI) patients. BACKGROUND: Patients with acute coronary syndrome resulting from LMD and/or three-vessel disease (LMD/3VD) are at the highest risk of adverse cardiovascular events. Neutrophil to lymphocyte ratio (NLR) has been proposed as a marker of cardiovascular risk, but the prognostic value of NLR in patients with LMD/3VD who underwent percutaneous coronary intervention (PCI) is not clearly defined...
January 13, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29297944/solvent-effects-on-differentiation-of-mouse-brain-tissue-using-laser-microdissection-cut-and-drop-sampling-with-direct-mass-spectral-analysis
#2
John F Cahill, Vilmos Kertesz, Tiffany Porta, J C Yves LeBlanc, Ron M A Heeren, Gary J Van Berkel
RATIONALE: Laser microdissection-liquid vortex capture/electrospray ionization mass spectrometry (LMD-LVC/ESI-MS) has potential for on-line classification of tissue but an investigation into what analytical conditions provide best spectral differentiation has not been conducted. The effects of solvent, ionization polarity, and spectral acquisition parameters on differentiation of mouse brain tissue regions are described. METHODS: Individual 40 × 40 μm microdissections from cortex, white, grey, granular, and nucleus regions of mouse brain tissue were analyzed using different capture/ESI solvents, in positive and negative ion mode ESI, using time-of-flight (TOF)-MS and sequential window acquisitions of all theoretical spectra (SWATH)-MS (a permutation of tandem-MS), and combinations thereof...
January 3, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29295528/comparison-of-microstructure-and-mechanical-properties-of-scalmalloy%C3%A2-produced-by-selective-laser-melting-and-laser-metal-deposition
#3
Mustafa Awd, Jochen Tenkamp, Markus Hirtler, Shafaqat Siddique, Markus Bambach, Frank Walther
The second-generation aluminum-magnesium-scandium (Al-Mg-Sc) alloy, which is often referred to as Scalmalloy®, has been developed as a high-strength aluminum alloy for selective laser melting (SLM). The high-cooling rates of melt pools during SLM establishes the thermodynamic conditions for a fine-grained crack-free aluminum structure saturated with fine precipitates of the ceramic phase Al₃-Sc. The precipitation allows tensile and fatigue strength of Scalmalloy® to exceed those of AlSi10Mg by ~70%. Knowledge about properties of other additive manufacturing processes with slower cooling rates is currently not available...
December 23, 2017: Materials
https://www.readbyqxmd.com/read/29248376/postoperative-radiosurgery-for-the-treatment-of-metastatic-brain-tumor-evaluation-of-local-failure-and-leptomeningeal-disease
#4
Paul M Foreman, Bradford E Jackson, Karan P Singh, Andrew K Romeo, Barton L Guthrie, Winfield S Fisher, Kristen O Riley, James M Markert, Christopher D Willey, Markus Bredel, John B Fiveash
In patients undergoing surgical resection of a metastatic brain tumor, whole brain radiation therapy reduces the risk of recurrence and neurologic death. Focal radiation has the potential to mitigate neurocognitive side effects. We present an institutional experience of postoperative radiosurgery for the treatment of brain metastases. A retrospective review of a prospectively maintained institutional radiosurgery database was performed for the years 2005-2015 identifying all adult patients treated with postoperative radiosurgery to the tumor bed...
December 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29230121/leptomeningeal-disease-and-the-evolving-role-of-molecular-targeted-therapy-and-immunotherapy
#5
REVIEW
Katharine Hall Thomas, Robert A Ramirez
Background: Leptomeningeal disease (LMD) is a complication that results from solid tumor metastasis. Prognosis is extremely poor. As therapeutic options for solid tumors improve, the rate of LMD continues to increase. Until recently, treatment has been limited to radiation therapy, intrathecal chemotherapy, and systemic chemotherapy, with an overall survival of 2-3 months. Targeted molecular therapy and immunotherapies are promising new options for increasing overall survival and clinical improvement; however, optimal clinical management remains unknown...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/29224050/maldi-imaging-combined-with-laser-microdissection-based-microproteomics-for-protein-identification-application-to-intratumor-heterogeneity-studies
#6
Rémi Longuespée, Deborah Alberts, Dominique Baiwir, Gabriel Mazzucchelli, Nicolas Smargiasso, Edwin De Pauw
Matrix-assisted laser desorption ionization (MALDI) imaging is widely used for in situ proteomic mapping and finds multiple applications in pathology. However, low fragmentation yields in MALDI avoid an optimal identification of peptides from tissues. On the other hand, LMD-based microproteomic analyses allow for the identification of hundreds to thousands of proteins from small tissue regions. Herein, we present the combination of MALDI imaging and LMD-based microproteomic approaches for parallel identification...
December 10, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29214042/maternal-weight-in-the-postpartum-results-from-the-delta-healthy-sprouts-trial
#7
Lisa M Tussing-Humphreys, Jessica L Thomson, Nefertiti OjiNjideka Hemphill, Melissa H Goodman, Alicia S Landry
Background: Excessive postnatal weight retention may pose a threat to a woman's health and future pregnancies. Women in the Lower Mississippi Delta (LMD) region of Mississippi suffer from among the highest rates of obesity in the U.S. and are more likely to gain an excessive amount of weight during pregnancy. The aim of this study was to determine if LMD women who received a lifestyle enhanced maternal, infant, and early childhood home visiting (MIECHV) curriculum had more favorable weight outcomes through 12-months postpartum compared to women who received a standard MIECHV curriculum...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/29188211/response-of-leptomeningeal-dissemination-of-anaplastic-glioma-to-temozolomide-experience-of-two-cases
#8
Jin Woo Bae, Eun Kyung Hong, Ho-Shin Gwak
The incidence of leptomeningeal dissemination (LMD) of anaplastic glioma has been increasing. LMD can be observed at the time of initial presentation or the time of recurrence. As a result of both rarity and unusual presentation, a standard therapy has not yet been suggested. In contrast to leptomeningeal carcinomatosis for systemic solid cancers, a relatively prolonged survival is observed in some patients with LMD of anaplastic gliomas. Treatment modalities include whole craniospinal irradiation, intra-cerebrospinal fluid (CSF) chemotherapy, and systemic chemotherapy...
October 2017: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/29184999/lc-ms-ms-imaging-with-thermal-film-based-laser-microdissection
#9
Michiko Oya, Hiromi Suzuki, Andrea Roxanne J Anas, Koichi Oishi, Kenji Ono, Shun Yamaguchi, Megumi Eguchi, Makoto Sawada
Mass spectrometry (MS) imaging is a useful tool for direct and simultaneous visualization of specific molecules. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is used to evaluate the abundance of molecules in tissues using sample homogenates. To date, however, LC-MS/MS has not been utilized as an imaging tool because spatial information is lost during sample preparation. Here we report a new approach for LC-MS/MS imaging using a thermal film-based laser microdissection (LMD) technique. To isolate tissue spots, our LMD system uses a 808-nm near infrared laser, the diameter of which can be freely changed from 2...
November 28, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29170908/local-control-and-overall-survival-for-adjuvant-stereotactic-radiosurgery-in-patients-with-residual-or-recurrent-disease
#10
Tavish Nanda, Andrew Yaeh, Cheng-Chia Wu, Ashish Jani, Shumaila Saad, Yasir H Qureshi, Keith A Cauley, Jeraldine Lesser, Simon K Cheng, Steven R Isaacson, Michael B Sisti, Jeffrey N Bruce, Guy M McKhann, Sameer A Sheth, Andrew B Lassman, Tony J C Wang
Prior studies of post-operative stereotactic radiosurgery (SRS) have not distinguished between Adjuvant SRS (ARS) versus Adjuvant SRS to residual/recurrent disease (ARD). In this study, we defined ARS and ARD and investigated local control (LC), overall survival (OS), distant development of brain metastases (DBF), and leptomeningeal disease (LMD). We retrospectively identified BM patients who received surgical resection and SRS for BM from an IRB approved database between Jan 2009-Aug 2015. Patients were stratified into two groups: ARS and ARD...
November 23, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29119531/the-non-operative-management-of-asymptomatic-liver-hydatids-ending-echinococcophobia
#11
Farrokh Saidi, Farrokh Habibzadeh
BACKGROUND: Cystic echinococcosis is common in many countries and involves the liver in 75% of cases. The current belief is that all incidentally discovered asymptomatic liver hydatids must be subjected to some types of interventional treatments pre-emptively for fear of some presumably impending complications. We conducted this study to assess the prognosis of patients with liver hydatids without any surgical interventions. Furthermore, we tried to predict the outcome of the cyst using two radiological signs...
November 8, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29066948/is-arc-mrna-unique-a-search-for-mrnas-that-localize-to-the-distal-dendrites-of-dentate-gyrus-granule-cells-following-neural-activity
#12
Christopher A de Solis, Anna A Morales, Matthew P Hosek, Alex C Partin, Jonathan E Ploski
There have been several attempts to identify which RNAs are localized to dendrites; however, no study has determined which RNAs localize to the dendrites following the induction of synaptic activity. We sought to identify all RNA transcripts that localize to the distal dendrites of dentate gyrus granule cells following unilateral high frequency stimulation of the perforant pathway (pp-HFS) using Sprague Dawley rats. We then utilized laser microdissection (LMD) to very accurately dissect out the distal 2/3rds of the molecular layer (ML), which contains these dendrites, without contamination from the granule cell layer, 2 and 4 h post pp-HFS...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29034509/3d-diffusion-weighted-129-xe-mri-for-whole-lung-morphometry
#13
Ho-Fung Chan, Neil J Stewart, Graham Norquay, Guilhem J Collier, Jim M Wild
PURPOSE: To obtain whole lung morphometry measurements from (129) Xe in a single breath-hold with 3D multiple b-value (129) Xe diffusion-weighted MRI (DW-MRI) with an empirically optimized diffusion time and compressed sensing for scan acceleration. METHODS: Prospective three-fold undersampled 3D multiple b-value hyperpolarized (129) Xe DW-MRI datasets were acquired, and the diffusion time (Δ) was iterated so as to provide diffusive length scale (LmD ) estimates from the stretched exponential model (SEM) that are comparable to those from (3) He...
October 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28989744/mixed-matrix-membranes-with-enhanced-antifouling-activity-probing-the-surface-tailoring-potential-of-tiron-and-chromotropic-acid-for-nano-tio2
#14
Avishek Pal, T K Dey, A K Debnath, Bharat Bhushan, A K Sahu, R C Bindal, Soumitra Kar
Mixed-matrix membranes (MMMs) were developed by impregnating organofunctionalized nanoadditives within fouling-susceptible polysulfone matrix following the non-solvent induced phase separation (NIPS) method. The facile functionalization of nanoparticles of anatase TiO2 (nano-TiO2) by using two different organoligands, viz. Tiron and chromotropic acid, was carried out to obtain organofunctionalized nanoadditives, FT-nano-TiO2 and FC-nano-TiO2, respectively. The structural features of nanoadditives were evaluated by X-ray diffraction, X-ray photoelectron spectroscopy, Raman and Fourier transform infrared spectroscopy, which established that Tiron leads to the blending of chelating and bridging bidentate geometries for FT-nano-TiO2, whereas chromotropic acid produces bridging bidentate as well as monodentate geometries for FC-nano-TiO2...
September 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28974415/hypofractionated-stereotactic-radiation-therapy-to-the-resection-bed-for-intracranial-metastases
#15
MULTICENTER STUDY
Audrey Keller, Mélanie Doré, Hélène Cebula, François Thillays, François Proust, Ioana Darié, Stéphane-André Martin, Gregory Delpon, François Lefebvre, Georges Noël, Delphine Antoni
PURPOSE: To retrospectively report the outcomes of a large multicenter cohort of patients treated with surgery and hypofractionated stereotactic radiation therapy (HFSRT) to the resection cavities of brain metastases (BMs). METHODS AND MATERIALS: Between March 2008 and February 2015, 181 patients with no prior whole-brain radiation therapy (WBRT) were treated by HFSRT to the surgical bed of BM at the dose of 33 Gy (3 × 11 Gy). The primary endpoint was local control...
December 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28968585/treatment-and-prognosis-of-leptomeningeal-disease-secondary-to-metastatic-breast-cancer-a-single-centre-experience
#16
Belinda Kingston, Hamzeh Kayhanian, Chloe Brooks, Nicola Cox, Narda Chaabouni, Stefania Redana, Eleftheria Kalaitzaki, Ian Smith, Mary O'Brien, Stephen Johnston, Marina Parton, Jill Noble, Susie Stanway, Alistair Ring, Nicholas Turner, Alicia Okines
PURPOSE: Leptomeningeal disease (LMD) is an uncommon complication of advanced breast cancer. The prognosis is poor, and although radiotherapy (RT), systemic and intra-thecal (IT) chemotherapy are accepted treatment modalities, efficacy data are limited. This study was designed to evaluate potential predictors of survival in this patient group. METHODS: Breast cancer patients with LMD diagnosed by MRI in a 10-year period (2004-2014) were identified from electronic patient records...
December 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28967051/additive-manufacturing-of-titanium-alloys-in-the-biomedical-field-processes-properties-and-applications
#17
Francesco Trevisan, Flaviana Calignano, Alberta Aversa, Giulio Marchese, Mariangela Lombardi, Sara Biamino, Daniele Ugues, Diego Manfredi
The mechanical properties and biocompatibility of titanium alloy medical devices and implants produced by additive manufacturing (AM) technologies - in particular, selective laser melting (SLM), electron beam melting (EBM) and laser metal deposition (LMD) - have been investigated by several researchers demonstrating how these innovative processes are able to fulfil medical requirements for clinical applications. This work reviews the advantages given by these technologies, which include the possibility to create porous complex structures to improve osseointegration and mechanical properties (best match with the modulus of elasticity of local bone), to lower processing costs, to produce custom-made implants according to the data for the patient acquired via computed tomography and to reduce waste...
September 25, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28935572/macrophage-infiltration-is-a-causative-factor-for-ligamentum-flavum-hypertrophy-through-the-activation-of-collagen-production-in-fibroblasts
#18
Takeyuki Saito, Masamitsu Hara, Hiromi Kumamaru, Kazu Kobayakawa, Kazuya Yokota, Ken Kijima, Shingo Yoshizaki, Katsumi Harimaya, Yoshihiro Matsumoto, Kenichi Kawaguchi, Mitsumasa Hayashida, Yutaka Inagaki, Keiichiro Shiba, Yasuharu Nakashima, Seiji Okada
Ligamentum flavum (LF) hypertrophy causes lumbar spinal canal stenosis, leading to leg pain and disability in activities of daily living in elderly individuals. Although previous studies have been performed on LF hypertrophy, its pathomechanisms have not been fully elucidated. In this study, we demonstrated that infiltrating macrophages were a causative factor for LF hypertrophy. Induction of macrophages into the mouse LF by applying a microinjury resulted in LF hypertrophy along with collagen accumulation and fibroblasts proliferation at the injured site, which were very similar to the characteristics observed in the severely hypertrophied LF of human...
September 19, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28900274/characterization-and-identification-of-a-woody-lesion-mimic-mutant-lmd-showing-defence-response-and-resistance-to-alternaria-alternate-in-birch
#19
Ranhong Li, Su Chen, Guifeng Liu, Rui Han, Jing Jiang
Lesion mimic mutants (LMM) usually show spontaneous cell death and enhanced defence responses similar to hypersensitive response (HR) in plants. Many LMM have been reported in rice, wheat, maize, barley, Arabidopsis, etc., but little was reported in xylophyta. BpGH3.5 is an early auxin-response factor which regulates root elongation in birch. Here, we found a T-DNA insertion mutant in a BpGH3.5 transgenic line named lmd showing typical LMM characters and early leaf senescence in Betula platyphylla × B...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28838092/percutaneous-coronary-intervention-vs-coronary-artery-bypass-grafting-for-left-main-revascularization-an-updated-meta-analysis
#20
Navkaranbir S Bajaj, Nirav Patel, Rajat Kalra, Peter Marogil, Ashwanikumar Bhardwaj, Garima Arora, Pankaj Arora
Aims: The optimal revascularization strategy for left main coronary artery disease (LMD) remains controversial, especially with two recent randomized controlled trials showing conflicting results. We sought to address this controversy with our analysis. Methods and results: Comprehensive literature search was performed. We compared percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) for LMD revascularization using standard meta-analytic techniques...
July 1, 2017: European Heart Journal. Quality of Care & Clinical Outcomes
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