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https://www.readbyqxmd.com/read/28095688/effect-of-gold-nanoparticle-size-and-coating-on-labeling-monocytes-for-ct-tracking
#1
Peter Chhour, Johoon Kim, Barbara Benardo, Alfredo Tovar, Shaameen Mian, Harold I Litt, Victor A Ferrari, David P Cormode
With advances in cell therapies, interest in cell tracking techniques to monitor the migration, localization, and viability of these cells continues to grow. X-ray computed tomography (CT) is a cornerstone of medical imaging but has been limited in cell tracking applications due to its low sensitivity toward contrast media. In this study, we investigate the role of size and surface functionality of gold nanoparticles for monocyte uptake to optimize the labeling of these cells for tracking in CT. We synthesized gold nanoparticles (AuNP) that range from 15 to 150 nm in diameter and examined several capping ligands, generating 44 distinct AuNP formulations...
January 18, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28057690/related-allopolyploids-display-distinct-floral-pigment-profiles-and-transgressive-pigments
#2
Elizabeth W McCarthy, Andrea E Berardi, Stacey D Smith, Amy Litt
PREMISE OF THE STUDY: Both polyploidy and shifts in floral color have marked angiosperm evolution. Here, we investigate the biochemical basis of the novel and diverse floral phenotypes seen in allopolyploids in Nicotiana (Solanaceae) and examine the extent to which the merging of distinct genomes alters flavonoid pigment production. METHODS: We analyzed flavonol and anthocyanin pigments from Nicotiana allopolyploids of different ages (N. tabacum, 0.2 million years old; several species from Nicotiana section Repandae, 4...
January 5, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28046666/su-f-j-03-treatment-planning-for-laser-ablation-therapy-in-presence-of-heterogeneous-tissue-a-retrospective-study
#3
R Madankan, C MacLellan, S Fahrenholtz, J Weinberg, G Rao, J Hazle, R Stafford, D Fuentes
PURPOSE: MR guided Laser Induced Thermal Therapy (MRgLITT) is an effective technique for cancerous tissue destruction in brain. Precise modeling of the thermal ablation procedure is important for treatment planning for MRgLITT. Physical properties of target tissue such as optical attenuation (µ) highly affect the outcome of thermal ablation modeling. Hence to ensure accuracy of modeling scheme, it is crucial to precisely estimate patient specific heterogeneity in these parameters. METHODS: A steady-state Bioheat model is used for simulation of temperature field over the heterogeneous target tissue...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28009635/perioperative-and-anesthetic-considerations-for-neurosurgical-laser-interstitial-thermal-therapy-ablations
#4
Federico Jimenez-Ruiz, Benjamin Arnold, Claudio E Tatsui, Juan P Cata
OBJECTIVE: To describe the anesthetic considerations in patients undergoing laser interstitial thermal therapy (LITT) for neurosurgical procedures. BACKGROUND: LITT for neurosurgical procedures is being increasingly used in a variety of central nervous system diseases. Several studies have demonstrated promising results including a shorter hospital stay. Given the rising trend for the use of LITT, anesthesiologists need to be familiar with the anesthetic considerations to provide care for patients undergoing these types of procedures...
December 22, 2016: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28003942/clinical-usage-and-economic-effectiveness-of-a-recently-developed-epidermal-autograft-harvesting-system-in-13-chronic-wound-patients-in-a-university-based-wound-center
#5
Angela Hulsey, Paul Linneman, Jeff Litt
INTRODUCTION:  Chronic wounds are a significant healthcare problem in the United States. Their costs approach 25 billion dollars in the United States. Current wound-care treatments of local wound care, moist dressings, and source control, while necessary for wound healing, are frequently not enough to ensure complete wound closure. The current surgical technique of split-thickness skin grafting is an operative procedure, painful, time-consuming, and leaves significant donor site wounds...
November 14, 2016: Curēus
https://www.readbyqxmd.com/read/27995431/prototype-willingness-model-drinking-cognitions-mediate-personalized-normative-feedback-efficacy
#6
Melissa A Lewis, Dana M Litt, Mary Tomkins, Clayton Neighbors
Personalized normative feedback (PNF) interventions have been shown to be efficacious at reducing college student drinking. Because descriptive norms have been shown to mediate PNF efficacy, the current study focused on examining additional prototype willingness model social reaction cognitions, namely, prototypes and willingness, as mediators of intervention efficacy. We expected the PNF interventions to be associated with increased prototype favorability of students who do not drink, which would in turn be associated with decreased willingness to drink and subsequently, less drinking...
December 19, 2016: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/27995263/outpatient-management-of-transient-ischaemic-attack
#7
Victor Weng Keong Loh, Derek Tuck Loong Soon, Leonard Leong Litt Yeo
Stroke is a significant cause of death and disability in Singapore; in 2014, it was the fourth most common cause of death. Transient ischaemic attack (TIA) is defined as a transient episode of neurological dysfunction caused by focal brain, spinal cord or retinal ischaemia without evidence of acute infarction. The diagnosis of TIA/acute stroke needs to be considered in all patients who present with sudden focal neurological dysfunction. Prompt referral for assessment, neuroimaging and intervention provides the best chance for neurological recovery and/or minimising further neurological damage...
December 2016: Singapore Medical Journal
https://www.readbyqxmd.com/read/27995127/stereotactic-laser-ablation-for-medically-intractable-epilepsy-the-next-generation-of-minimally-invasive-epilepsy-surgery
#8
REVIEW
Michael J LaRiviere, Robert E Gross
Epilepsy is a common, disabling illness that is refractory to medical treatment in approximately one-third of patients, particularly among those with mesial temporal lobe epilepsy. While standard open mesial temporal resection is effective, achieving seizure freedom in most patients, efforts to develop safer, minimally invasive techniques have been underway for over half a century. Stereotactic ablative techniques, in particular, radiofrequency (RF) ablation, were first developed in the 1960s, with refinements in the 1990s with the advent of modern computed tomography and magnetic resonance-based imaging...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/27993917/visceral-artery-aneurysms-an-atypical-presentation-of-large-vessel-vasculitis
#9
Brendan Litt, Benedetto Mussari, Gabrielle Gauvin, David Alcoloumbre
No abstract text is available yet for this article.
December 19, 2016: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/27940712/strengthening-early-intervention-for-very-preterm-infants
#10
Marie C McCormick, Jonathan S Litt
No abstract text is available yet for this article.
December 2016: Pediatrics
https://www.readbyqxmd.com/read/27940511/the-outcomes-of-very-preterm-infants-is-it-time-to-ask-different-questions
#11
Marie C McCormick, Jonathan S Litt
No abstract text is available yet for this article.
January 2017: Pediatrics
https://www.readbyqxmd.com/read/27905093/magnetic-resonance-imaging-guided-laser-interstitial-thermal-therapy-for-treatment-of-drug-resistant-epilepsy
#12
Joon Y Kang, Michael R Sperling
Surgery is the most effective treatment for drug-resistant epilepsy. Long-term studies demonstrate that about 60% to 80% of patients become seizure-free after anterior temporal lobectomy and a majority of patients (about 95%) report significant seizure reduction after surgery. In the last few years, there has been significant advances in minimally invasive surgical techniques to treat drug-resistant epilepsy. These minimally invasive procedures have significant advantages over open surgery in that they produce less immediate discomfort and disability, while allowing for greater preservation of functional tissue...
November 30, 2016: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/27896038/focal-seizures-induced-by-intracranial-electroencephalogram-grids
#13
Eric Hudgins, Mesha-Gay Brown, Brian Litt, Kathryn Davis, Andrew G Richardson, Timothy Lucas
Here we present a unique, but important seizure variant directly related to placement of subdural grids. Two distinct epileptogenic zones were identified, one which correlated with the patient's baseline seizures and a separate zone associated with atypical semiology and localization. Inspection of this zone at surgery revealed cortical deformation from the grid itself. The patient underwent successful surgical resection of the primary epileptogenic zone, but not that of the atypical zone. She remains seizure free at two years following surgery...
October 15, 2016: Curēus
https://www.readbyqxmd.com/read/27893578/propylthiouracil-associated-leukocytoclastic-necrotizing-cutaneous-vasculitis-a-case-report-and-review-of-the-literature
#14
Anji E Wall, Sheena M Weaver, Jeffrey S Litt, Lisa Rae
The purpose of this case report and review of the literature is to provide an exploration of the clinical symptoms, diagnosis, prevention, and management of propylthiouracil (PTU)-associated vasculitis in the intensive care setting. A PubMed search of the available literature was conducted using the MeSH search terms "propylthiouracil" and "vasculitis." The literature search returned 121 articles. Twenty-five were excluded because they were not in English. Fifty-nine case reports or case studies describing PTU-associated vasculitis were included...
November 11, 2016: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/27883904/enabling-an-open-data-ecosystem-for-the-neurosciences
#15
Martin Wiener, Friedrich T Sommer, Zachary G Ives, Russell A Poldrack, Brian Litt
No abstract text is available yet for this article.
November 23, 2016: Neuron
https://www.readbyqxmd.com/read/27861328/laser-interstitial-thermal-therapy-for-mesial-temporal-lobe-epilepsy
#16
Robert T Wicks, Walter J Jermakowicz, Jonathan R Jagid, Daniel E Couture, Jon T Willie, Adrian W Laxton, Robert E Gross
: Approximately one-third of patients with epilepsy do not achieve adequate seizure control through medical management alone. Mesial temporal lobe epilepsy (MTLE) is one of the most common forms of medically refractory epilepsy referred for surgical management. Stereotactic laser amygdalohippocampotomy using magnetic resonance-guided laser interstitial thermal therapy (MRg-LITT) is an important emerging therapy for MTLE. Initial published reports support MRg-LITT as a less invasive surgical option with a shorter hospital stay and fewer neurocognitive side effects compared with craniotomy for anterior temporal lobectomy with amygdalohippocampectomy and selective amygdalohippocampectomy...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27861323/stereotactic-laser-interstitial-thermal-therapy-for-recurrent-high-grade-gliomas
#17
Ian Lee, Steven Kalkanis, Constantinos G Hadjipanayis
BACKGROUND: The value of maximal safe cytoreductive surgery in recurrent high-grade gliomas (HGGs) is gaining wider acceptance. However, patients may harbor recurrent tumors that may be difficult to access with open surgery. Laser interstitial thermal therapy (LITT) is emerging as a technique for treating a variety of brain pathologies, including primary and metastatic tumors, radiation necrosis, and epilepsy. OBJECTIVE: To review the role of LITT in the treatment of recurrent HGGs, for which current treatments have limited efficacy, and to discuss the possible role of LITT in the disruption of the blood-brain barrier to increase delivery of chemotherapy locoregionally...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27861322/laser-ablation-of-newly-diagnosed-malignant-gliomas-a-meta-analysis
#18
Michael E Ivan, Alireza M Mohammadi, Nicoleta De Deugd, Joshua Reyes, Gregor Rodriguez, Ashish Shah, Gene H Barnett, Ricardo J Komotar
BACKGROUND: Magnetic resonance-guided laser-interstitial thermotherapy (MR-LITT) is a minimally invasive technique that shows promise in neuro-oncology because of its superiority in delivering precise minimally invasive thermal energy with minimal collateral damage. OBJECTIVE: In this analysis, we investigate initial data on the use of MR-LITT in the treatment of newly diagnosed high-grade gliomas. METHODS: With the use of the PubMed, OVID, and Google-scholar database systems, a comprehensive search of the English literature was performed...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27861321/laser-interstitial-thermal-therapy-technology-physics-of-magnetic-resonance-imaging-thermometry-and-technical-considerations-for-proper-catheter-placement-during-magnetic-resonance-imaging-guided-laser-interstitial-thermal-therapy
#19
Nitesh V Patel, Matthew Mian, R Jason Stafford, Brian V Nahed, Jon T Willie, Robert E Gross, Shabbar F Danish
: Laser-induced thermal therapy has become a powerful tool in the neurosurgical armamentarium. The physics of laser therapy are complex, but a sound understanding of this topic is clinically relevant, as many centers have incorporated it into their treatment algorithm, and educated patients are demanding consideration of its use for their disease. Laser ablation has been used for a wide array of intracranial lesions. Laser catheter placement is guided by stereotactic planning; however, as the procedure has popularized, the number of ways in which the catheter can be inserted has also increased...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27861320/laser-interstitial-thermal-therapy-lighting-the-way-to-a-new-treatment-option-in-neurosurgery
#20
Roberto Diaz, Michael E Ivan, Simon Hanft, Steve Vanni, Glen Manzano, Jonathan Jagid, Ricardo J Komotar
LITT, laser interstitial therapyNd:YAG, neodymium-doped yttrium aluminum.
December 2016: Neurosurgery
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