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https://www.readbyqxmd.com/read/28642288/ferumoxytol-enhanced-magnetic-resonance-imaging-assessing-inflammation-after-myocardial-infarction
#1
Colin G Stirrat, Shirjel R Alam, Thomas J MacGillivray, Calum D Gray, Marc R Dweck, Jennifer Raftis, William Sa Jenkins, William A Wallace, Renzo Pessotto, Kelvin Hh Lim, Saeed Mirsadraee, Peter A Henriksen, Scott Ik Semple, David E Newby
OBJECTIVES: Macrophages play a central role in the cellular inflammatory response to myocardial infarction (MI) and predict subsequent clinical outcomes. We aimed to assess temporal changes in cellular inflammation and tissue oedema in patients with acute MI using ultrasmallsuperparamagnetic particles of iron oxide (USPIO)-enhanced MRI. METHODS: Thirty-one patients were recruited following acute MI and followed up for 3 months with repeated T2 and USPIO-enhanced T2*-mapping MRI...
June 22, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28641244/computerized-lung-sound-screening-for-pediatric-auscultation-in-noisy-field-environments
#2
Dimitra Emmanouilidou, Eric D McCollum, Daniel E Park, Mounya Elhilali
GOAL: Chest auscultations offer a non-invasive and low-cost tool for monitoring lung disease. However, they present many shortcomings including inter-listener variability, subjectivity, and vulnerability to noise and distortions. The current work proposes a computer-aided approach to process lung signals acquired in the field under adverse noisy conditions, by improving the signal quality and offering automated iden- tification of abnormal auscultations indicative of respiratory pathologies...
June 19, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28638436/in-vivo-label-free-mapping-of-the-effect-of-a-photosystem-ii-inhibiting-herbicide-in-plants-using-chlorophyll-fluorescence-lifetime
#3
Elizabeth Noble, Sunil Kumar, Frederik G Görlitz, Chris Stain, Chris Dunsby, Paul M W French
BACKGROUND: In order to better understand and improve the mode of action of agrochemicals, it is useful to be able to visualize their uptake and distribution in vivo, non-invasively and, ideally, in the field. Here we explore the potential of plant autofluorescence (specifically chlorophyll fluorescence) to provide a readout of herbicide action across the scales utilising multiphoton-excited fluorescence lifetime imaging, wide-field single-photon excited fluorescence lifetime imaging and single point fluorescence lifetime measurements via a fibre-optic probe...
2017: Plant Methods
https://www.readbyqxmd.com/read/28636544/analysis-of-esr1-and-pik3ca-mutations-in-plasma-cell-free-dna-from-er-positive-breast-cancer-patients
#4
Takashi Takeshita, Yutaka Yamamoto, Mutsuko Yamamoto-Ibusuki, Mai Tomiguchi, Aiko Sueta, Keiichi Murakami, Yoko Omoto, Hirotaka Iwase
BACKGROUND: The measurement of ESR1 and PIK3CA mutations in plasma cell-free DNA (cfDNA) has been studied as a non-invasive method to quickly assess and monitor endocrine therapy (ET) resistant metastatic breast cancer (MBC) patients. METHODS: The subjects of this retrospective study were a total of 185 plasma samples from 86 estrogen receptor-positive BC patients, of which 151 plasma samples were from 69 MBC patients and 34 plasma samples were from 17 primary BC (PBC) patients...
June 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636537/metabolic-pathway-for-the-universal-fluorescent-recognition-of-tumor-cells
#5
Ana Fernandez-Carrascal, Manuel Garcia-Algar, Moritz Nazarenus, Alicia Torres-Nuñez, Luca Guerrini, Neus Feliu, Wolfgang J Parak, Eduardo Garcia-Rico, Ramon A Alvarez-Puebla
Quantification of circulating tumor cells (CTCs) in blood samples from cancer patients is a non-invasive approach to monitoring the status of the disease. Most of the methods proposed in the recent years are phenomenological and rely on the use of antibodies labelled with fluorophores, magnetic particles, or immobilized on surfaces to capture the CTCs. Herein, we designed and optimized a method that employs a glucose analogue labelled with a fluorophore which takes advantage of the different metabolic pathways of cancer cells to discern them from normal ones...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635619/on-the-importance-of-accurate-quantification-of-individual-volatile-metabolites-in-exhaled-breath
#6
David Smith, Patrik Spanel
It is argued that shortcomings of certain approaches to breath analysis research based on superficial interpretation of non-quantitative data are inadvertently inhibiting the progression of non-invasive breath analysis into clinical practice. The objective of this perspective is to suggest more clinically profitable approaches to breath research. Thus, following a discourse on the challenges and expectations in breath research, a brief indication is given of the analytical techniques currently used for the analysis of very humid exhaled breath...
June 21, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28635172/doxorubicin-kinetics-and-effects-on-lung-cancer-cell-lines-using-in-vitro-raman-micro-spectroscopy-binding-signatures-drug-resistance-and-dna-repair
#7
Zeineb Farhane, Franck Bonnier, Orla Howe, Alan Casey, Hugh J Byrne
Raman micro-spectroscopy is a non-invasive analytical tool, whose potential in cellular analysis and monitoring drug mechanisms of action has already been demonstrated, and which can potentially be used in pre-clinical and clinical applications for the prediction of chemotherapeutic efficacy. To further investigate such potential clinical application, it is important to demonstrate its capability to differentiate drug mechanisms of action and cellular resistances. Using the example of Doxorubicin (DOX), in this study, it was used to probe the cellular uptake, signatures of chemical binding and subsequent cellular responses, of the chemotherapeutic drug in two lung cancer cell lines, A549 and Calu-1...
June 21, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28634614/detection-of-the-circulating-tumor-dnas-in-angioimmunoblastic-t-cell-lymphoma
#8
Mamiko Sakata-Yanagimoto, Rie Nakamoto-Matsubara, Daisuke Komori, Tran B Nguyen, Keiichiro Hattori, Toru Nanmoku, Takayasu Kato, Naoki Kurita, Yasuhisa Yokoyama, Naoshi Obara, Yuichi Hasegawa, Atsushi Shinagawa, Shigeru Chiba
Recent genetic studies identified that the disease-specific G17V RHOA mutation, together with mutations in TET2, DNMT3A, and IDH2, is a hallmark of angioimmunoblastic T cell lymphomas (AITL). The diagnostic value of these mutations is now being investigated. Circulating tumor DNAs (ctDNAs) may offer a non-invasive testing for diagnosis and disease monitoring of cancers. To investigate whether these mutations are useful markers for ctDNAs in AITL and its related lymphomas, we performed targeted sequencing for TET2, RHOA, DNMT3A, and IDH2 in paired tumors and cell-free DNAs from 14 patients at diagnosis...
June 20, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28631914/-impact-of-cpap-therapy-on-erectile-function-during-sleep-and-testosterone-level-in-men-with-sleep-apnea-syndrome
#9
I M Madaeva, O N Berdina, N V Semenova, V V Madaev, I N Gutnik, L I Kolesnikova
The article presents the results of a polysomnographic study with simultaneous monitoring spontaneous nocturnal erections - Nocturnal Penile Tumescences (NPT) in 69 men with age-related androgen deficiency (AAD). Of these, 45 patients were diagnosed with obstructive sleep apnea syndrome (OSAS). In 34 of the 45 patients with OSAS, regimens of non-invasive ventilation with positive-positive airway pressure (CPAP) were selected. Titration was carried out using automatic CPAP-devices for 2 months. The control group (n=24) comprised men with AAD, matched by the "copy-pair" type without clinical manifestations of respiratory disturbances during sleep...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28629374/multi-purpose-ecg-telemetry-system
#10
Mohamed Marouf, Goran Vukomanovic, Lazar Saranovac, Miroslav Bozic
BACKGROUND: The Electrocardiogram ECG is one of the most important non-invasive tools for cardiac diseases diagnosis. Taking advantage of the developed telecommunication infrastructure, several approaches that address the development of telemetry cardiac devices were introduced recently. Telemetry ECG devices allow easy and fast ECG monitoring of patients with suspected cardiac issues. Choosing the right device with the desired working mode, signal quality, and the device cost are still the main obstacles to massive usage of these devices...
June 19, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28628438/haemophilus-influenzae-type-a-meningitis-in-immunocompetent-child-oman-2015
#11
Kiran P Sawardekar
Meningitis caused by Haemophilus influenzae type b (Hib) was eliminated in Oman after the introduction of Hib vaccine in 2001. However, a case of H. influenzae type a meningitis was diagnosed in a child from Oman in 2015, which highlights the need to monitor the incidence of invasive non-Hib H. influenzae disease.
July 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28628215/monitoring-pathogen-induced-sickness-in-mice-and-rats
#12
Daria Kolmogorova, Emma Murray, Nafissa Ismail
Sickness behavior monitoring, a technique for examining the development of sickness symptomatology following infection, is necessary in experiments studying neurochemical and physiological changes associated with pathogen-induced immune activation. However, the results of sickness behavior monitoring are difficult to reconcile due to inconsistencies in protocol methods and rater bias. The protocol described herein offers a non-invasive and unbiased approach to assess the progression of pathogen-induced sickness behaviors...
June 19, 2017: Current Protocols in Mouse Biology
https://www.readbyqxmd.com/read/28626803/estimation-of-insulin-secretion-glucose-uptake-by-tissues-and-liver-handling-of-glucose-using-a-mathematical-model-of-glucose-insulin-homeostasis-in-lean-and-obese-mice
#13
Michael Brenner, Sakineh Esmaeili Mohsen Abadi, Ramin Balouchzadeh, H Felix Lee, Hoo Sang Ko, Michael Johns, Nehal Malik, Joshua J Lee, Guim Kwon
Destruction of the insulin-producing β-cells is the key determinant of diabetes mellitus regardless of their types. Due to their anatomical location within the islets of Langerhans scattered throughout the pancreas, it is difficult to monitor β-cell function and mass clinically. To this end, we propose to use a mathematical model of glucose-insulin homeostasis to estimate insulin secretion, glucose uptake by tissues, and hepatic handling of glucose. We applied the mathematical model by Lombarte et al. (2013) to compare various rate constants representing glucose-insulin homeostasis between lean (11% fat)- and high fat diet (HFD; 45% fat)-fed mice...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28626013/sleep-disrupts-high-level-speech-parsing-despite-significant-basic-auditory-processing
#14
Shiri Makov, Omer Sharon, Nai Ding, Michal Ben-Shachar, Yuval Nir, Elana Zion Golumbic
The extent to which the sleeping brain processes sensory information remains unclear. This is particularly true for continuous and complex stimuli, such as speech, in which information is organized into hierarchically embedded structures. Recently, novel metrics for assessing the neural representation of continuous speech have been developed, using non-invasive brain recordings. Those were so far tested during wakefulness. Here we investigated, for the first time, the sleeping brain's capacity to process continuous speech at different hierarchical levels, using a newly developed Concurrent Hierarchical Tracking (CHT) approach that can online monitor the neural representation and processing-depth of continuous speech...
June 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28625639/longitudinal-monitoring-of-ctdna-egfr-mutation-burden-from-urine-correlates-with-patient-response-to-egfr-tkis-a-case-series
#15
Nishan Tchekmedyian, Raja Mudad, Fernando F Blanco, Victoria M Raymond, Jordan Garst, Mark G Erlander, Eric Haura, David Berz
Targetable, somatic EGFR mutations are highly prevalent in patients with non-small cell lung cancer (NSCLC), making them eligible for tyrosine kinase inhibitor (TKI) therapy. Circulating tumor DNA (ctDNA), isolated from blood or urine, has been demonstrated to reliably identify somatic tumor associated EGFR mutations, specifically in patients with inconclusive biopsy. When conventional imaging modalities are inconclusive, quantitative assessment of systemic ctDNA burden has the potential to assess therapeutic response...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28623400/a-novel-eyelid-motion-monitor
#16
Adi Hanuka, Maor Itzhak, Alon Berger, Mony Orbach, Eli Shoshan, Levi Schächter, Daniel Briscoe
BACKGROUND: Eyelid motion analysis can provide important information about ophthalmic, neurologic, and systemic diseases. Routine assessment of eyelid function is currently based mainly on clinical examination estimating Levator Function and static palpebral fissure measurements. Most clinical tools developed to date are cumbersome expensive and difficult to operate. Currently there is no widely available, affordable device providing user friendly precision based evaluation of eyelid kinematics...
June 16, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28622665/non-invasive-in-situ-measurement-of-blood-lactate-using-microwave-sensors
#17
Alex Mason, Olga Korostynska, Julien Louis, Luis Eduardo Cordova-Lopez, Badr Abdullah, Jacob Greene, Rob Connell, John Hopkins
GOAL: This paper reports the use of a novel electromagnetic sensor technique for real-time non-invasive monitoring of blood lactate in human subjects. METHODS: The technique was demonstrated on 34 participants who undertook a cycling regime, with rest period before and after, to produce a rising and falling lactate response curve. Sensors attached to the arm and legs of participants gathered spectral data, blood samples were measured using a Lactate Pro V2, as well as temperature and heart rate data were collected...
June 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28621440/t-lymphocytes-dominate-local-leukocyte-infiltration-in-response-to-intradermal-injection-of-functionalized-graphene-based-nanomaterial
#18
G F Erf, D M Falcon, K S Sullivan, S E Bourdo
Graphene-based nanomaterials (GBN) have many potential biomedical applications. However, information regarding their biological properties and interactions with cells and/or soluble factors within a complex tissue is limited. The objective of this study was to use the growing feather (GF) of chickens as a minimally invasive cutaneous test-site to assess and monitor leukocyte recruitment in response to intradermal GBN injection. Specifically, the dermis of 20 GFs per chicken was injected with 10 μl of phosphate-buffered saline (PBS)-vehicle or 10 μl of 300 μg ml(-1) oxygen-functionalized (f) GBN (6 chickens/treatment)...
June 16, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28619277/non-invasive-estimation-of-temperature-during-physiotherapeutic-ultrasound-application-using-the-average-gray-level-content-of-b-mode-images-a-metrological-approach
#19
André V Alvarenga, Volker Wilkens, Olga Georg, Rodrigo P B Costa-Félix
Healing therapies that make use of ultrasound are based on raising the temperature in biological tissue. However, it is not possible to heal impaired tissue by applying a high dose of ultrasound. The temperature of the tissue is ultimately the physical quantity that has to be assessed to minimize the risk of undesired injury. Invasive temperature measurement techniques are easy to use, despite the fact that they are detrimental to human well being. Another approach to assessing a rise in tissue temperature is to derive the material's general response to temperature variations from ultrasonic parameters...
June 12, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28616284/intrapleural-perfusion-thermo-chemotherapy-for-pleural-effusion-caused-by-lung-carcinoma-under-vats
#20
Runlei Hu, Hong Jiang, Hu Li, Dongshan Wei, Guoqing Wang, Shenglin Ma
BACKGROUND: The aim of this study was to assess the effectiveness of intrapleural perfusion thermo-chemotherapy (IPTC) under video-assisted thoracoscopic surgery (VATS) for malignant pleural effusion (MPE) caused by lung carcinoma. METHODS: In this retrospective study, fifty-four patients with moderate or large amounts of ipsilateral MPE secondary to non-small cell lung cancer (NSCLC) underwent pleural biopsy and IPTC under VATS. IPTC was performed by perfusing the pleural cavity with 43...
May 2017: Journal of Thoracic Disease
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