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https://www.readbyqxmd.com/read/29232185/18f-fdg-pet-biomarkers-help-detect-early-metabolic-response-to-irreversible-electroporation-and-predict-therapeutic-outcomes-in-a-rat-liver-tumor-model
#1
Xifu Wang, Zhanliang Su, Tianchu Lyu, Matteo Figini, Daniel Procissi, Junjie Shangguan, Chong Sun, Bin Wang, Na Shang, Shanzhi Gu, Quanhong Ma, Andrew C Gordon, Kai Lin, Jian Wang, Robert J Lewandowski, Riad Salem, Vahid Yaghmai, Andrew C Larson, Zhuoli Zhang
Purpose To test the hypothesis that biomarkers of fluorine 18 (18F) fluorodeoxyglucose (FDG) positron emission tomography (PET) can be used for the early detection of therapeutic response to irreversible electroporation (IRE) of liver tumor in a rodent liver tumor model. Materials and Methods The institutional animal care and use committee approved this study. Rats were inoculated with McA-RH7777 liver tumor cells in the left median and left lateral lobes. Tumors were allowed to grow for 7 days to reach a size typically at least 5 mm in longest diameter, as verified with magnetic resonance (MR) imaging...
December 12, 2017: Radiology
https://www.readbyqxmd.com/read/29231794/intracranial-contrast-transit-times-on-digital-subtraction-angiography-decrease-more-in-patients-with-delayed-intraparenchymal-hemorrhage-after-pipeline
#2
Denise Brunozzi, Sophia F Shakur, Fady T Charbel, Ali Alaraj
Background Pipeline embolization devices (PEDs) are used for endovascular treatment of cerebral aneurysms but can be associated with delayed ipsilateral intraparenchymal hemorrhage (DIPH). Changes in intracranial hemodynamics after PED are poorly understood. Objective Here, we assess hemodynamic changes after PED in patients and compare these changes in patients with and without DIPH (DIPH+ and DIPH-). Methods Records of patients with distal internal carotid artery (ICA) aneurysms treated with PED at our institution between 2012 and 2017 were retrospectively reviewed...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29229867/intracranial-pulsatility-in-patients-with-cerebral-small-vessel-disease-a-systematic-review
#3
Yulu Shi, Michael J Thrippleton, Ian Marshall, Joanna M Wardlaw
Growing evidence suggests that increased intracranial pulsatility is associated with cerebral small vessel disease (SVD). We systematically reviewed papers that assessed intracranial pulsatility in subjects with SVD. We included 27 cross-sectional studies (n=3356): 20 used Doppler ultrasound and 7 used phase-contrast MRI. Most studies measured pulsatility in the internal carotid or middle cerebral arteries (ICA, MCA), whereas few assessed veins or cerebrospinal fluid (CSF). Methods to reduce bias and risk factor adjustment were poorly reported...
December 11, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29224765/pre-and-post-operative-application-of-acoustic-rhinometry-in-children-with-otitis-media-with-effusion-and-with-or-without-adenoid-hypertrophy-a-retrospective-analysis
#4
Dan Lai, Gang Qin, Junmei Pu, Lu Liu, Yiying Yang
BACKGROUND: There is no standardized scheme for preoperative evaluation of adenoid hypertrophy or a consensus on surgical indications for adenoidectomy in children with otitis media with effusion (OME), especially for young children intolerant to nasal endoscopic assessment. The aim of this study was to evaluate the efficacy and reliability of acoustic rhinometry (AR) in evaluating benefits from adenoidectomy in children with OME. METHOD: Children with OME who were scheduled for surgical intervention were reviewed and AR tests performed preoperatively and postoperatively...
December 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29222799/middle-cerebral-artery-occlusion-by-an-intraluminal-suture-method
#5
Rosalia Crupi, Rosanna Di Paola, Emanuela Esposito, Salvatore Cuzzocrea
Stroke represents the most common fatal neurological disease especially in highly developed countries. Even today, treatment options are very limited. The development of new therapeutic approaches replies, to a great extent, on experimental rodent models of focal cerebral ischemia. Since ~80% of ischemic strokes occur in the area of middle cerebral artery (MCA), a number of these stroke models are based on this artery. The intraluminal monofilament model of MCA occlusion involves the insertion of a surgical filament inside the external carotid artery and its extension into the internal carotid artery until the tip occludes the source of the MCA-thus arresting blood flow with resultant infarction in the MCA area...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29216493/intimate-partner-violence-against-women-circumstances-of-aggressions-and-oral-maxillofacial-traumas-a-medical-legal-and-forensic-approach
#6
Ítalo de Macedo Bernardino, Luzia Michelle Santos, Alysson Vinicius Porto Ferreira, Tomás Lucio Marques de Almeida Lima, Lorena Marques da Nóbrega, Sérgio d'Avila
INTRODUCTION: Intimate partner violence (IPV) is a serious public health problem that frequently results in oral-maxillofacial traumas, generating high social and economic costs. The aim of this study was to describe the profile of women victims of IPV and determine the pattern of oral-maxillofacial traumas, according to a medical-legal and forensic perspective. An exploratory study of 1361 suspected cases of women victims of IPV was carried out based on database of an Institute of Legal Medicine and Forensic Dentistry of Northeastern Brazil during a period of 4 years...
December 4, 2017: Legal Medicine
https://www.readbyqxmd.com/read/29216156/butterfly-inspired-micro-concavity-array-film-for-color-conversion-efficiency-improvement-of-quantum-dot-based-light-emitting-diodes
#7
Shudong Yu, Baoshan Zhuang, Junchi Chen, Zongtao Li, Longshi Rao, Binhai Yu, Yong Tang
Inspired by the Papilio blumei butterfly, quantum-dot (QD) film coupled with micro-concavity array (MCA) films is proposed in this Letter to enhance color conversion efficiency (CCE) of QD-based light-emitting diodes (LEDs). The diameter, aspect ratio, and pitch of the MCA are optimized in the optical simulations. Both the simulation and experimental results show that the scattering and double reflection effects are the key to the CCE improvement of QD films. The results show that the CCEs are increased from 19...
December 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/29215761/in-vivo-differentiation-of-common-basal-cell-carcinoma-subtypes-by-microvascular-and-structural-imaging-using-dynamic-optical-coherence-tomography
#8
Lotte Themstrup, Nathalie De Carvalho, Sabrina Mai Nielsen, Jonas Olsen, Silvana Ciardo, Sandra Schuh, Birgit Meinecke-Hansen Nørnberg, Julia Welzel, Martina Ulrich, Giovanni Pellacani, Gregor B E Jemec
BACKGROUND: The subtype of basal cell carcinoma (BCC) influences the choice of treatment. Optical coherence tomography (OCT) is a non-invasive imaging tool and recent development of angiographic version of OCT has extended the application of OCT to image the cutaneous microvasculature (so called dynamic OCT, D-OCT). This study explores D-OCT's ability to differentiate the common BCC subtypes by microvascular and structural imaging. METHODS: 81 patients with 98 BCC lesions, consisting of three subtypes: 27 superficial BCC (sBCC), 55 nodular BCC (nBCC) and 16 infiltrative BCC (iBCC), were D-OCT scanned at three European dermatology centres...
December 7, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/29215168/decreased-signal-intensity-ratio-on-mra-reflects-misery-perfusion-on-spect-in-patients-with-intracranial-stenosis
#9
Masatomo Miura, Makoto Nakajima, Akiko Fujimoto, Shinya Shiraishi, David S Liebeskind, Yukio Ando
BACKGROUND AND PURPOSE: Acetazolamide reactivity on 123 I-IMP SPECT is used to detect misery perfusion due to intracranial atherosclerosis. Noninvasive fractional flow assessed by signal intensity ratio (SIR) on time of flight-magnetic resonance angiography (TOF-MRA) might offer a feasible alternative to identify high-risk intracranial stenosis. METHODS: Data from consecutive patients with unilateral middle cerebral artery (MCA) stenosis who underwent both TOF-MRA and acetazolamide reactivity on 123 I-IMP SPECT were retrospectively analyzed...
December 7, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29214780/mismatch-between-tof-mr-angiography-and-ct-angiography-of-the-middle-cerebral-artery-may-be-a-critical-sign-in-cerebrovascular-dynamics
#10
Keiji Igase, Michiya Igase, Ichiro Matsubara, Kazuhiko Sadamoto
PURPOSE: Although time-of-flight (TOF)-magnetic resonance angiography (MRA) can clearly depict intracranial arteries, the arterial flow of middle cerebral artery (MCA) is occasionally not detected. We evaluated this phenomenon with reference to cerebrovascular dynamics. MATERIALS AND METHODS: Seventeen patients with suspected occlusion of MCA or internal carotid artery on TOF-MRA were enrolled. All patients underwent CT angiography (CTA) and quantitative cerebral blood flow (CBF) examination for measurement of resting CBF and cerebrovascular reactivity (CVR)...
January 2018: Yonsei Medical Journal
https://www.readbyqxmd.com/read/29214402/decision-making-and-neurosurgeons-agreement-in-the-management-of-aneurysmal-subarachnoid-haemorrhage-based-on-computed-tomography-angiography
#11
Nicolai Maldaner, Jan-Karl Burkhardt, Martin Nikolaus Stienen, Johannes Goldberg, David Bervini, Philippe Bijlenga, Davide Croci, Daniel Zumofen, Donato D'Alonzo, Serge Marbacher, Rodolfo Maduri, Roy Thomas Daniel, Carlo Serra, Giuseppe Esposito, Marian C Neidert, Oliver Bozinov, Luca Regli
BACKGROUND: To determine the neurosurgeon's agreement in aneurysmal subarachnoid haemorrhage (aSAH) management with special emphasis on the rater's level of experience. A secondary aim was to analyse potential aneurysm variables associated with the therapeutic recommendation. METHOD: Basic clinical information and admission computed tomography angiography (CTA) images of 30 consecutive aSAH patients were provided. Twelve neurosurgeons independently evaluated aneurysm characteristics and gave recommendations regarding the emergency management and aneurysm occlusion therapy...
December 7, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29210166/phytoceuticals-in-fenugreek-ameliorate-vldl-overproduction-and-insulin-resistance-via-the-insig-signaling-pathway
#12
Rituraj Khound, Jing Shen, Yongyan Song, Dipak Santra, Qiaozhu Su
SCOPE: This study aimed to characterize the effect of fenugreek (Trigonella foenum-graecum) seed and its phytoceutical trigonelline in anti-metabolic inflammation and ameliorating overproduction of very low density lipoprotein (VLDL) in insulin resistance. METHODS AND RESULTS: Two groups of genetic hyperlipidemic mice generated by depletion of cAMP responsive binding protein H (CREBH) were fed either a chow containing 2% fenugreek seed or vehicle for 7 weeks. Q-RT-PCR and immunoblotting analysis demonstrated that fenugreek seed containing diet inhibited hepatic SREBP-1c activation and the subsequent de novo lipogenesis by enhancing expression of insulin-inducible gene-1 (Insig-1) and gene-2 (Insig-2)...
December 6, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29202815/normothermia-after-decompressive-surgery-for-space-occupying-middle-cerebral-artery-infarction-a-protocol-based-approach
#13
Jan Rahmig, Matthias Kuhn, Hermann Neugebauer, Eric Jüttler, Heinz Reichmann, Hauke Schneider
BACKGROUND: Moderate hypothermia after decompressive surgery might not be beneficial for stroke patients. However, normothermia may prove to be an effective method of enhancing neurological outcomes. The study aims were to evaluate the application of a pre-specified normothermia protocol in stroke patients after decompressive surgery and its impact on temperature load, and to describe the functional outcome of patients at 12 months after treatment. METHODS: We analysed patients with space-occupying middle cerebral artery (MCA) infarction treated with decompressive surgery and a pre-specified temperature management protocol...
December 4, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29202730/selection-bias-in-clinical-stroke-trials-depending-on-ability-to-consent
#14
Benjamin Hotter, Lena Ulm, Sarah Hoffmann, Mira Katan, Joan Montaner, Alejandro Bustamante, Andreas Meisel
BACKGROUND: Clinical trials are the hallmark of evidence-based medicine, but recruitment is often challenging, especially in stroke trials investigating patients not being able to give informed consent. In some nations, ethics committees will not approve of inclusion in a clinical study via consent of a legal representative. The ethical dilemma of including or excluding those patients has not been properly addressed, as there is little data on the effect of stroke characteristics on the ability to give informed consent...
December 4, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29201539/assessment-of-cerebral-blood-flow-with-magnetic-resonance-imaging-in-children-with-sickle-cell-disease-a-quantitative-comparison-with-transcranial-doppler-ultrasonography
#15
Paula L Croal, Jackie Leung, Przemyslaw Kosinski, Manohar Shroff, Isaac Odame, Andrea Kassner
Introduction: Transcranial Doppler ultrasonography (TCD) is a clinical tool for stratifying ischemic stroke risk by identifying abnormal elevations in blood flow velocity (BFV) in the middle cerebral artery (MCA). However, TCD is not effective at screening for subtle neurologic injury such as silent cerebral infarcts. To better understand this disparity, we compared TCD measures of BFV with tissue-level cerebral blood flow (CBF) using arterial spin-labeling MRI in children with and without sickle cell disease, and correlated these measurements against clinical hematologic measures of disease severity...
November 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29198890/evaluation-of-patency-after-vascular-anastomosis-using-quantitative-evaluation-of-visualization-time-in-indocyanine-green-video-angiography
#16
Shunsuke Nakagawa, Yasuo Murai, Fumihiro Matano, Eitaro Ishisaka, Akio Morita
BACKGROUND: In vascular reconstructive surgery, intraoperative confirmation of the patency is performed by angiography, Doppler, or indocyanine videoangiography, but it is sometimes insufficient. OBJECTIVE: Using the FLOW 800 system (Carl Zeiss, Germany), we confirmed the patency in a quantitative relative evaluation of the timing of the luminance change of the regions of interest (ROIs) on the donor and recipient. METHODS: Thirty-seven patients (58 anastomoses) were divided into two groups: arteriosclerotic ischemic disease (CI group; n=23) or cerebral aneurysm (AN group; n=14)...
November 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29198574/design-and-application-of-a-fluorogenic-assay-for-monitoring-inflammatory-caspase-activity
#17
Raj Ranganathan, Gena Lenti, Nicholas M Tassone, Brian J Scannell, Cathrine A Southern, Caitlin E Karver
Various fluorogenic assays exist for monitoring the activity of inflammatory caspases. However, there are no continuous assays that provide C-terminal substrate sequence specificity for inflammatory caspases. As a first step towards this, we have developed a continuous in vitro assay that relies on monitoring emission from tryptophan after cleavage of a quenching coumarin chromophore. The coumarin can be attached as an amino acid side chain or capping the C-terminus of the peptide. When the coumarin is a side chain, it allows for C-terminal and N-terminal sequence specificities to be explored...
November 30, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/29191051/preoperative-evaluation-of-moyamoya-spontaneous-anastomosis-of-combined-revascularization-donor-vessels-in-adults-by-duplex-ultrasonography
#18
Li Chen, Bin Xu, Yong Wang, Yujun Liao, Huiwen Pan, Yi Wang
OBJECTIVE: To evaluate the preoperative diagnostic value of duplex ultrasonography in moyamoya spontaneous anastomosis of combined revascularization donor vessels in adults. METHODS: A total of 99 preoperative adult patients who underwent superficial temporal artery-to-middle cerebral artery (STA-MCA) anastomosis were retrospectively analyzed. Each side of the cerebral hemisphere was examined as a separate procedure. A total of 198 cerebral hemispheres were divided into three groups: a collateral, non-collateral, and control group based on digital subtraction angiography (DSA)...
November 30, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29190679/infarct-morphology-assessment-in-patients-with-carotid-artery-middle-cerebral-artery-occlusion-using-fast-fluid-attenuated-inversion-recovery-flair-vascular-hyperintensity-fvh
#19
Deng-Yue Zhai, Shuang-Gen Zhu, Wei Zhang, Xue Li, You-Ling Zhu
We aim to evaluate the value of fast fluid-attenuated inversion recovery (FLAIR) vascular hyperintensity (FVH) in assessing infarct morphology in patients with symptomatic internal carotid artery (ICA) or middle cerebral artery (MCA) occlusions. Magnetic resonance (MR) diffusion-weighted imaging (DWI) FLAIR sequences, and carotid/cerebral magnetic resonance angiography of 102 patients with symptomatic ICA or MCA occlusions were evaluated. The location and score of FVH were determined using Olindo's method; patients were classified as having Low or High FVHs based on FVH score, and either Distal or Proximal FVH based on FVH location...
2017: PloS One
https://www.readbyqxmd.com/read/29183174/limit-of-intraoperative-near-infrared-spectroscopy-monitoring-during-endovascular-thrombectomy-in-acute-ischemic-stroke
#20
Ryo Hiramatsu, Motomasa Furuse, Ryokichi Yagi, Hiroyuki Ohnishi, Naokado Ikeda, Naosuke Nonoguchi, Shinji Kawabata, Shigeru Miyachi, Toshihiko Kuroiwa
Endovascular thrombectomy is recommended for a persistent ischemic penumbra if recanalization cannot be achieved by the intravenous (IV) administration of recombinant tissue-plasminogen activator (rt-PA) alone. Although endovascular thrombectomy is a powerful treatment for major cerebral artery occlusion, the monitoring of recanalization and reperfusion during acute ischemic stroke presents a therapeutic challenge, and a previous study reported the usefulness of near-infrared spectroscopy (NIRS) for intraoperative monitoring during emergency endovascular thrombectomy for acute large ischemic stroke...
January 1, 2017: Interventional Neuroradiology
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