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https://www.readbyqxmd.com/read/29453053/ultrasound-molecular-imaging-of-acute-cardiac-transplantation-rejection-using-nanobubbles-targeted-to-t-lymphocytes
#1
Jinfeng Liu, Yihan Chen, Guohua Wang, Qing Lv, Yali Yang, Jing Wang, Pingyu Zhang, Jie Liu, Yu Xie, Li Zhang, Mingxing Xie
Clinical surveillance of acute heart transplantation rejection requires repeated invasive endomyocardial biopsies and noninvasive diagnostic techniques are desperately needed. It is acknowledged that T lymphocyte infiltration is the central process of acute rejection. We hypothesized that ultrasound molecular imaging with T lymphocyte-targeted nanobubbles could be used to detect acute rejection in heart transplantation. In this study, nanobubbles bearing anti-CD3 antibody (NB CD3 ) or isotype antibody (NB con ) were prepared and characterized...
February 8, 2018: Biomaterials
https://www.readbyqxmd.com/read/29452619/monitoring-response-to-therapy
#2
REVIEW
Mike M Sathekge, Alfred O Ankrah, Ismaheel Lawal, Mariza Vorster
Monitoring response to treatment is a key element in the management of infectious diseases, yet controversies still persist on reliable biomarkers for noninvasive response evaluation. Considering the limitations of invasiveness of most diagnostic procedures and the issue of expression heterogeneity of pathology, molecular imaging is better able to assay in vivo biologic processes noninvasively and quantitatively. The usefulness of 18 F-FDG-PET/CT in assessing treatment response in infectious diseases is more promising than for conventional imaging...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29450799/iron-oxide-labeling-does-not-affect-differentiation-potential-of-human-bone-marrow-mesenchymal-stem-cells-exhibited-by-their-differentiation-into-cardiac-and-neuronal-cells
#3
Sujata Mohanty, Krishan Gopal Jain, Sushmita Bose Nandy, Anupama Kakkar, Manoj Kumar, Amit Kumar Dinda, Harpal Singh, Alok Ray
Mesenchymal stem cells (MSCs) have shown promising outcomes in cardiac and neuronal diseases. Efficient and noninvasive tracking of MSCs is essential to harness their therapeutic potential. Iron oxide nanoparticles (IONPs) have emerged as effective means to label stem cells and visualize them using magnetic resonance imaging (MRI). It is known that IONPs do not affect viability and cell proliferation of stem cells. However, very few studies have demonstrated differentiation potential of iron oxide-labeled MSCs and their differentiation into specific lineages that can contribute to cellular therapies...
February 15, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29450711/renal-fat-fraction-and-diffusion-tensor-imaging-in-patients-with-early-stage-diabetic-nephropathy
#4
Yuan-Cheng Wang, Yinglian Feng, Chun-Qiang Lu, Shenghong Ju
OBJECTIVE: To investigate the renal fat fraction and water molecular diffusion features in patients with early-stage DN using Dixon imaging and diffusion tensor imaging (DTI). METHODS: Sixty-one type 2 diabetics (normoalbuminuria: n = 40; microalbuminuria: n = 21) and 34 non-diabetic volunteers were included. All participants received three-point Dixon imaging and DTI using a 3.0-T magnetic resonance imager. The fat fraction [FF] and DTI features [fractional anisotropy (FA), apparent diffusion coefficient (ADC), tract counts and length from DTI tractography] were collected...
February 15, 2018: European Radiology
https://www.readbyqxmd.com/read/29450695/a-clinical-approach-to-arrhythmias-revisited-in-2018-from-ecg-over-noninvasive-and-invasive-electrophysiology-to-advanced-imaging
#5
REVIEW
L Jordaens
Understanding arrhythmias and their treatment is not always easy. The current straightforward approach with catheter ablation and device therapy is an amazing achievement, but does not make management of underlying or other cardiac disease and pharmacological therapy unnecessary. The goal of this paper is to describe how much of the knowledge of the 1980s and early 1990s can and should still be applied in the modern treatment of patients with arrhythmias. After an introduction, this review will focus on paroxysmal atrial fibrillation and a prototype of 'idiopathic' ventricular arrhythmias, two diseases with a striking similarity, and will discuss the arrhythmogenesis...
February 15, 2018: Netherlands Heart Journal
https://www.readbyqxmd.com/read/29449411/molecular-imaging-in-drug-discovery-and-development
#6
Jonathan R Lindner, Jeanne Link
Noninvasive imaging has played an increasing role in the process of cardiovascular drug development. This review focuses specifically on the use of molecular imaging, which has been increasingly applied to improve and accelerate certain preclinical steps in drug development, including the identification of appropriate therapeutic targets, evaluation of on-target and off-target effects of candidate therapies, assessment of dose response, and the evaluation of drug or biological biodistribution and pharmacodynamics...
February 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29449141/neurometabolites-alteration-in-the-acute-phase-of-mild-traumatic-brain-injury-mtbi-an-in-vivo-proton-magnetic-resonance-spectroscopy-1h-mrs-study
#7
Vigneswaran Veeramuthu, Pohchoo Seow, Vairavan Narayanan, Jeannie Hisu Ding Wong, Li Kuo Tan, Aditya Tri Hernowo, Norlisah Ramli
RATIONALE AND OBJECTIVES: Magnetic resonance spectroscopy is a noninvasive imaging technique that allows for reliable assessment of microscopic changes in brain cytoarchitecture, neuronal injuries, and neurochemical changes resultant from traumatic insults. We aimed to evaluate the acute alteration of neurometabolites in complicated and uncomplicated mild traumatic brain injury (mTBI) patients in comparison to control subjects using proton magnetic resonance spectroscopy (1H magnetic resonance spectroscopy)...
February 12, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29448119/estimation-of-hepatic-fat-fraction-using-modified-dixon-magnetic-resonance-imaging-techniques-effect-of-liver-cirrhosis
#8
Jeeyoung Min, Hee Sun Park, Young Jun Kim, Mi Hye Yu, Sung Il Jung, Hae Jeong Jeon
PURPOSE: To evaluate modified Dixon MRI techniques in hepatic fat estimation and to assess the effect of cirrhosis. METHODS: 235 patients who underwent liver MRI were included. Correlation between modified Dixon techniques with MRS was assessed. Accuracy of MR techniques in hepatic fat estimation was calculated, and the result was compared between patients with/without liver cirrhosis. RESULTS: Correlation between modified Dixon and MRS was better in group without liver cirrhosis, and accuracy of modified Dixon method was higher in group without liver cirrhosis...
February 7, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29447788/the-influence-of-febuxostat-on-coronary-artery-endothelial-dysfunction-in-patients-with-coronary-artery-disease-a-phase-4-randomized-placebo-controlled-double-blind-crossover-trial
#9
Allison G Hays, Micaela Iantorno, Michael Schär, Shenghan Lai, Matthew Czarny, Elayne Breton, Robert N Palmer, Andrew Whelton, Robert G Weiss, Gary Gerstenblith
BACKGROUND: The xanthine oxidase (XO) system is a significant source of vascular oxidative stress, which is believed to impair endothelial function, an important contributor to atherosclerotic disease. We tested whether febuxostat, a potent XO inhibitor, improves coronary endothelial function (CEF) in patients with stable coronary artery disease (CAD) in a single-center, randomized, placebo-controlled, double-blind crossover trial. METHODS: CEF was measured using noninvasive magnetic resonance imaging (MRI) assessment of changes in 30 patients with stable CAD and baseline impaired CEF...
March 2018: American Heart Journal
https://www.readbyqxmd.com/read/29446940/ru-ii-compounds-next-generation-anticancer-metallotherapeutics
#10
Sreekanth Thota, Daniel A Rodrigues, Debbie C Crans, Eliezer J Barreiro
Metal based therapeutics are a precious class of drugs in oncology research that include examples of theranostic drugs, which are active both in diagnostic, specifically imaging, and therapeutics applications. Ruthenium compounds have shown selective bioactivity and the ability to overcome the resistance that platinum-based therapeutics face, making them effective oncotherapeutic competitors in rational drug invention approaches. The development of antineoplastic ruthenium therapeutics is of particular interest because ruthenium containing complexes NAMI-A, KP1019 and KP1339 entered clinical trials and DW1/2 is in preclinical levels...
February 15, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29446721/fluorescent-imaging-of-amyloid-%C3%AE-deposits-in-brain-an-overview-of-probe-development-and-a-highlight-of-the-applications-for-in-vivo-imaging
#11
Hualong Fu, Mengchao Cui
The β-amyloid (Aβ) plaques presented within the brain parenchyma have been widely proved to be one of the hallmarks of Alzheimer's disease (AD). According to the amyloid cascade hypothesis, the accumulation of Aβ plaques in brain is intrinsic and fundamental for disease onset, and much research about the early diagnosis of AD has based on this. A recent development in Aβ detection has focused on the mapping of the molecule events in the brain using an exquisite, noninvasive, and inexpensive optical imaging technique, which has stimulated the rapid development of Aβ-specific fluorescent probes...
February 13, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29446156/3d-nir-ii-molecular-imaging-distinguishes-targeted-organs-with-high-performance-nir-ii-bioconjugates
#12
Shoujun Zhu, Sonia Herraiz, Jingying Yue, Mingxi Zhang, Hao Wan, Qinglai Yang, Zhuoran Ma, Yan Wang, Jiahuan He, Alexander L Antaris, Yeteng Zhong, Shuo Diao, Yi Feng, Ying Zhou, Kuai Yu, Guosong Hong, Yongye Liang, Aaron J Hsueh, Hongjie Dai
Greatly reduced scattering in the second near-infrared (NIR-II) region (1000-1700 nm) opens up many new exciting avenues of bioimaging research, yet NIR-II fluorescence imaging is mostly implemented by using nontargeted fluorophores or wide-field imaging setups, limiting the signal-to-background ratio and imaging penetration depth due to poor specific binding and out-of-focus signals. A newly developed high-performance NIR-II bioconjugate enables targeted imaging of a specific organ in the living body with high quality...
February 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29446066/resource-use-during-the-last-6-months-of-life-of-individuals-dying-with-and-of-alzheimer-s-disease
#13
Kristof Faes, Joachim Cohen, Lieven Annemans
OBJECTIVES: To compare resource use during the last 6 months of life of individuals diagnosed with Alzheimer's disease (AD) but for whom AD was not formally identified as the underlying cause of death (dying with AD) with that of those who had AD as underlying cause of death (dying of AD). DESIGN: Full-population retrospective analysis. SETTING: Belgium. PARTICIPANTS: All Belgian decedents in 2012. MEASUREMENTS: We linked participants' healthcare, population, and death certificate data...
February 15, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29444709/mucinous-cystic-neoplasm-of-the-liver-with-extrahepatic-growth-presenting-with-ascending-cholangitis-diagnosed-by-endoscopic-ultrasound-features-a-case-report
#14
Tanawat Pattarapuntakul, Bancha Ovartlarnporn, Jaksin Sottisuporn
BACKGROUND: Mucinous cystic neoplasm of the liver with extrahepatic growth is a rare benign epithelial neoplasm of the biliary system that presents with a mass effect or is incidentally found on imaging. The tumor affects mostly the common hepatic duct, which is difficult to diagnose preoperatively by radiology, endoscopy, or cystic fluid analysis. Endoscopic ultrasound is a noninvasive tool for the evaluation of features of a cystic lesion and the extent of disease. Optimal treatment is complete tumor resection...
February 15, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29444286/techniques-to-ensure-accurate-targeting-for-delivery-of-awake-laser-interstitial-thermotherapy
#15
Dimitri Laurent, Seth F Oliveria, Michael Shang, Frank Bova, Rachel Freedman, Maryam Rahman
BACKGROUND: Magnetic resonance imaging (MRI) guided laser interstitial thermal therapy (LITT) is an emerging neurosurgical treatment modality that is typically performed under general anesthesia. We describe a novel workflow developed at the University of Florida to deliver LITT in conscious patients without the use of general anesthesia. OBJECTIVE: To describe a novel workflow for LITT implementation in the awake patient with equivalent treatment results when compared to procedures performed under general anesthesia...
February 10, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29443780/analysis-of-the-characteristics-of-optical-coherence-tomography-angiography-for-retinal-cavernous-hemangioma-a-case-report
#16
Shuyuan Lyu, Ming Zhang, Ruikang K Wang, Yunxia Gao, Qinqin Zhang, Xiaoxue Min
RATIONALE: Retinal cavernous hemangioma is a rare congenital vascular malformation with typical fundus changes. Optical coherence tomography angiography (OCTA), which is in rise in the recent years, is a rapid and noninvasive technology to assist in obtaining information regarding the blood flow changes in the fundus lesions from different layers without injecting a contrast agent. PATIENT CONCERNS: A 40-year-old male patient with visual occlusion in the right eye for >1 month was reported...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29443643/comprehensive-examination-of-the-athlete-s-shoulder
#17
Eric J Cotter, Charles P Hannon, David Christian, Rachel M Frank, Bernard R Bach
CONTEXT: Shoulder pain and dysfunction are common, with patients presenting complaints to both primary and orthopaedic physicians. History and physical examination remain essential to creating a differential diagnosis, even as noninvasive imaging has improved. EVIDENCE ACQUISITION: Literature was obtained through keyword searches based on the pathology in question (eg, rotator cuff) and the keywords physical examination using PubMed from January 1, 1980, through September 20, 2017...
February 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29441225/assessment-of-the-agreement-between-cerebral-hemodynamic-indices-quantified-using-dynamic-susceptibility-contrast-and-dynamic-contrast-enhanced-perfusion-magnetic-resonance-imagings
#18
Seyed Salman Zakariaee, Mohammad Ali Oghabian, Kavous Firouznia, Guive Sharifi, Farshid Arbabi, Farhad Samiei
Background: Brain tumor is one of the most common tumors. A successful treatment might be achieved with an early identification. Pathological investigation as the gold standard method for tumor identification has some limitations. Noninvasive assessment of tumor specifications may be possible using perfusion-weighted magnetic resonance imaging (MRI). Cerebral blood volume (CBV) and cerebral blood flow (CBF) could be calculated based on dynamic contrast-enhanced MRI (DCE-MRI) in addition to dynamic susceptibility contrast MRI (DSC-MRI) modality...
2018: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29440768/a-meta-analysis-of-diffusion-tensor-imaging-of-substantia-nigra-in-patients-with-parkinson-s-disease
#19
Xiao-Yan Deng, Li Wang, Ting-Ting Yang, Rui Li, Gang Yu
Parkinson's disease (PD) is a common neurodegenerative disease characterized by severe, selective loss of pigmented neurons in the substantial nigra (SN). Previous studies have indicated that such loss could be detected by diffusion tensor imaging (DTI). Here, we try to consolidate current DTI data to both quantitatively determine the imaging changes in SN, as well as explore the potential use of DTI for PD diagnosis. Fourteen research articles are included in this meta-analysis, each obtained by searching PubMed, EMBASE, or Cochrane library database dated until July 2017...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29438830/sample-and-substrate-preparation-for-exploring-living-neurons-in-culture-with-quantitative-phase-imaging
#20
REVIEW
Sébastien A Lévesque, Jean-Michel Mugnes, Erik Bélanger, Pierre Marquet
Quantitative phase imaging (QPI) has recently emerged as a powerful new quantitative microscopy technique suitable for the noninvasive exploration of the structure and dynamics of transparent specimens, including living cells in culture. Indeed, the quantitative phase signal (QPS), induced by transparent living cells, can be detected with a nanometric axial sensitivity, and contains a wealth of information about both cell morphology and content. However, QPS is also sensitive to various sources of experimental noise...
February 10, 2018: Methods: a Companion to Methods in Enzymology
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