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https://www.readbyqxmd.com/read/28723942/comparative-analysis-of-vaginal-microbiota-sampling-using-16s-rrna-gene-analysis
#1
Seppo Virtanen, Ilkka Kalliala, Pekka Nieminen, Anne Salonen
BACKGROUND: Molecular methods such as next-generation sequencing are actively being employed to characterize the vaginal microbiota in health and disease. Previous studies have focused on characterizing the biological variation in the microbiota, and less is known about how factors related to sampling contribute to the results. Our aim was to investigate the impact of a sampling device and anatomical sampling site on the quantitative and qualitative outcomes relevant for vaginal microbiota research...
2017: PloS One
https://www.readbyqxmd.com/read/28723841/military-civilian-partnership-in-device-innovation-development-commercialization-and-application-of-resuscitative-endovascular-balloon-occlusion-of-the-aorta-reboa
#2
Todd E Rasmussen, Jonathan L Eliason
Noncompressible torso hemorrhage (NCTH) and shock is a leading cause of trauma-related mortality and evidence suggests that survival from this injury pattern has not improved in decades. As such, innovating new approaches and devices, including technologies which can be used by providers within a short of time after severe injury, is a priority for the military. Guided by wartime observations, and through partnerships with civilian academia and private investment, the military has led an effort to define resuscitative endovascular balloon occlusion of the aorta (REBOA) and assess its potential to address this problem...
July 19, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28723838/transcatheter-pulmonary-valve-implantation-valve-technology-and-procedural-outcome
#3
Arash Salavitabar, Patrick Flynn, Ralf J Holzer
PURPOSE OF REVIEW: Procedural technique and short-term outcomes of transcatheter pulmonary valve implantation (TPVI) have been widely described. The purpose of this article is to provide an update on current valve technology, and to focus on recent data surrounding TPVI in the dilated right ventricular outflow tract (RVOT), hybrid interventions, significant outcomes, and procedural costs. RECENT FINDINGS: Transcatheter valve technology has expanded with current trials evaluating self-expandable valves that can be implanted in dilated RVOTs...
July 18, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28723834/talking-with-a-doctor-during-a-visit-elicits-increases-in-systolic-and-diastolic-blood-pressure
#4
Wenqiang Qi, Qinghua Wu, Yanqing Wu, Qiang Peng, Ping Li, Xiaoshu Cheng, Hai Su
OBJECTIVE: To investigate the impact of talking with doctors on blood pressure (BP) in outpatients. PATIENTS AND METHODS: This study included 122 hypertensive and 78 normotensive outpatients. BP was measured initially in silence with oscillometric BP monitors three times at 1-min intervals as follows: pre-1, pre-2, and pre-3. BP was then measured with the same device immediately, at 3 min, and at 5 min after talking commenced as follows: during-1, during-3, and during-5...
July 18, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28723833/concordance-of-motion-sensor-and-clinician-rated-fall-risk-scores-in-older-adults
#5
Julie Elledge
As the older adult population in the United States continues to grow, developing reliable, valid, and practical methods for identifying fall risk is a high priority. Falls are prevalent in older adults and contribute significantly to morbidity and mortality rates and rising health costs. Identifying at-risk older adults and intervening in a timely manner can reduce falls. Conventional fall risk assessment tools require a health professional trained in the use of each tool for administration and interpretation...
July 18, 2017: Computers, Informatics, Nursing: CIN
https://www.readbyqxmd.com/read/28723718/three-dimensional-head-mounted-gaming-task-procedure-maximizes-effects-of-vestibular-rehabilitation-in-unilateral-vestibular-hypofunction-a-randomized-controlled-pilot-trial
#6
Alessandro Micarelli, Andrea Viziano, Ivan Augimeri, Domenico Micarelli, Marco Alessandrini
Considering the emerging advantages related to virtual reality implementation in clinical rehabilitation, the aim of the present study was to discover possible (i) improvements achievable in unilateral vestibular hypofunction patients using a self-assessed head-mounted device (HMD)-based gaming procedure when combined with a classical vestibular rehabilitation protocol (HMD group) as compared with a group undergoing only vestibular rehabilitation and (ii) HMD procedure-related side effects. Therefore, 24 vestibular rehabilitation and 23-matched HMD unilateral vestibular hypofunction individuals simultaneously underwent a 4-week rehabilitation protocol...
July 18, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28723717/localized-muscle-vibration-reverses-quadriceps-muscle-hypotrophy-and-improves-physical-function-a-clinical-and-electrophysiological-study
#7
Maria Grazia Benedetti, Gennaro Boccia, Lorenzo Cavazzuti, Elena Magnani, Elisabetta Mariani, Alberto Rainoldi, Roberto Casale
Quadriceps weakness has been associated with knee osteoarthritis (OA). High-frequency localized muscle vibration (LMV) has been proposed recently for quadriceps strengthening in patients with knee OA. The purpose of this study was (a) to investigate the clinical effectiveness of high-frequency LMV on quadriceps muscle in patients with knee OA and (b) to disentangle, by means of surface electromyography (sEMG), the underlying mechanism. Thirty patients, aged between 40 and 65 years, and clinically diagnosed with knee OA were included in this randomized, controlled, single-blinded pilot study...
July 18, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28723370/evaluation-and-management-of-postprostatectomy-incontinence-a-systematic-review-of-current-literature
#8
REVIEW
Alexander Kretschmer, Wilhelm Hübner, Jaspreet S Sandhu, Ricarda M Bauer
CONTEXT: Radical prostatectomy is the most common reason for male stress urinary incontinence. There is still uncertainty about its diagnostic and therapeutic management. OBJECTIVE: To evaluate current evidence regarding the diagnosis and therapy of postprostatectomy incontinence (PPI). EVIDENCE ACQUISITION: A systematic review of the literature was performed in October 2015 using the Medline database. EVIDENCE SYNTHESIS: Diagnosis and conservative treatment of PPI are currently mostly based on expert opinions...
August 2016: European Urology Focus
https://www.readbyqxmd.com/read/28723304/the-quest-for-durable-lesions-in-catheter-ablation-of-atrial-fibrillation-technological-advances-in-radiofrequency-catheters-and-balloon-devices
#9
Tilman Maurer, Karl-Heinz Kuck
Atrial fibrillation is the most common cardiac arrhythmia and represents a growing clinical, social and economic challenge. Catheter ablation for symptomatic atrial fibrillation has evolved from an experimental procedure into a widespread therapy and offers a safe and effective treatment option. A prerequisite for durable PVI are transmural and contiguous circumferential lesions around the pulmonary veins. However, electrical reconnection of initially isolated pulmonary veins remains a primary concern and is a dominant factor for arrhythmia recurrence during long-term follow up...
July 19, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28723211/improving-fore-a-new-inlet-design-for-filtering-samples-through-individual-microarray-spots
#10
Victoria de Lange, Marco Habegger, Marco Schmidt, János Vörös
In this publication we present an improvement to our previously introduced vertical flow microarray, the FoRe array, which capitalizes on the fusion of immunofiltration and densely packed micron test sites. Filtering samples through individual microarray spots allows us to rapidly analyze dilute samples with high-throughput and high signal-to-noise. Unlike other flowthrough microarrays, in the FoRe design samples are injected into micron channels and sequentially exposed to different targets. This arrangement makes it possible to increase the sensitivity of the microarray by simply increasing the sample volume or to rapidly reconcentrate samples after preprocessing steps dilute the analyte...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723207/wearable-flexible-and-multifunctional-healthcare-device-with-an-isfet-chemical-sensor-for-simultaneous-sweat-ph-and-skin-temperature-monitoring
#11
Shogo Nakata, Takayuki Arie, Seiji Akita, Kuniharu Takei
Real-time daily healthcare monitoring may increase the chances of predicting and diagnosing diseases in their early stages which, currently, occurs most frequently during medical check-ups. Next-generation noninvasive healthcare devices, such as flexible multifunctional sensor sheets designed to be worn on skin, are considered to be highly suitable candidates for continuous real-time health monitoring. For healthcare applications, acquiring data on the chemical state of the body, alongside physical characteristics such as body temperature and activity, are extremely important for predicting and identifying potential health conditions...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723197/in-vivo-biosensing-progress-and-perspectives
#12
Guoxin Rong, Simon R Corrie, Heather A Clark
In vivo biosensors are emerging as powerful tools in biomedical research and diagnostic medicine. Distinct from "labels" or "imaging", in vivo biosensors are designed for continuous and long-term monitoring of target analytes in real biological systems and should be selective, sensitive, reversible and biocompatible. Due to the challenges associated with meeting all of the analytical requirements, we found relatively few reports of research groups demonstrating devices that meet the strict definition in vivo...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723192/mechanistic-challenges-and-advantages-of-biosensor-miniaturization-into-the-nanoscale
#13
Leyla Soleymani, Feng Li
Over the past few decades, there has been tremendous interest in developing biosensing systems that combine high sensitivity and specificity with rapid sample-to-answer times, portability, low-cost operation, and ease-of-use. Miniaturizing the biosensor dimensions into the nanoscale has been identified as a strategy for addressing the functional requirements of point-of-care and wearable biosensors. However, it is important to consider that decreasing the critical dimensions of biosensing elements impacts the two most important performance metrics of biosensors: limit-of-detection and response time...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723187/wearable-flexible-and-stretchable-glove-biosensor-for-on-site-detection-of-organophosphorus-chemical-threats
#14
Rupesh K Mishra, Lee J Hubble, Aida Martín, Rajan Kumar, Abbas Barfidokht, Jayoung Kim, Mustafa M Musameh, Ilias L Kyratzis, Joseph Wang
A flexible glove-based electrochemical biosensor with highly stretchable printed electrode system has been developed as a wearable point-of-use screening tool for defense and food security applications. This disposable-mechanically robust "lab-on-a-glove" integrates a stretchable printable enzyme-based biosensing system and active surface for swipe sampling on different fingers, and is coupled with a compact electronic interface for electrochemical detection and real-time wireless data transmission to a smartphone device...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723186/ingestible-sensors
#15
Kourosh Kalantar-Zadeh, Nam Ha, Jian Zhen Ou, Kyle J Berean
Ingestible sensing capsules are fast emerging as a critical technology that has the ability to greatly impact health, nutrition, and clinical areas. These ingestible devices are noninvasive and hence are very attractive for customers. With widespread access to smart phones connected to the Internet, the data produced by this technology can be readily seen and reviewed online, and accessed by both users and physicians. The outputs provide invaluable information to reveal the state of gut health and disorders as well as the impact of food, medical supplements, and environmental changes on the gastrointestinal tract...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723182/cross-linked-gold-nanoparticle-membrane-resonators-as-microelectromechanical-vapor-sensors
#16
Hendrik Schlicke, Malte Behrens, Clemens J Schröter, Gregor T Dahl, Hauke Hartmann, Tobias Vossmeyer
We report a novel approach for the detection of volatile compounds employing electrostatically driven drumhead resonators as sensing elements. The resonators are based on freestanding membranes of alkanedithiol cross-linked gold nanoparticles (GNPs), which are able to sorb analytes from the gas phase. Under reduced pressure, the fundamental resonance frequency of a resonator is continuously monitored while the device is exposed to varying partial pressures of toluene, 4-methylpentan-2-one, 1-propanol, and water...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723173/laser-scribed-graphene-electrodes-for-aptamer-based-biosensing
#17
Christoph Fenzl, Pranati Nayak, Thomas Hirsch, Otto S Wolfbeis, Husam N Alshareef, Antje J Baeumner
Graphene as a transducer material has produced some of the best-performing sensing approaches to date opening the door toward integrated miniaturized all-carbon point-of-care devices. Addressing this opportunity, laser-scribed graphene (LSG) electrodes are demonstrated here as highly sensitive and reliable biosensor transducers in blood serum analysis. These flexible electrodes with large electrochemical surface areas were fabricated using a direct-write laser process on polyimide foils. A universal immobilization approach is established by anchoring 1-pyrenebutyric acid to the graphene and subsequently covalently attaching an aptamer against the coagulation factor thrombin as an exemplary bioreceptor to the carboxyl groups...
May 26, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723167/sensitive-detection-of-mmp9-enzymatic-activities-in-single-cell-encapsulated-microdroplets-as-an-assay-of-cancer-cell-invasiveness
#18
Zhao Yu, Lu Zhou, Ting Zhang, Rui Shen, Chenxi Li, Xu Fang, Gareth Griffiths, Jian Liu
Matrix metalloproteinases (MMPs) are typically up-regulated in cancer cells, and play a critical role in assisting metastasis by the breakdown of the extracellular matrix. Here we report an effective strategy for cell invasiveness assay by integrating MMP9 functional activity analysis with single cell-encapsulated microdroplets. A flow focusing capillary microfluidic device has been assembled using "off-the-shelf" fluidic components for high-throughput generation of microdroplets. Tumor cells, MMP9 specific peptides, and other cofactors can be loaded into the device and encapsulated into individual droplets as dynamic microreactors for proteolytic cleavage of the substrate...
May 26, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723147/quantum-dot-based-molecularly-imprinted-polymers-on-three-dimensional-origami-paper-microfluidic-chip-for-fluorescence-detection-of-phycocyanin
#19
Bowei Li, Zhong Zhang, Ji Qi, Na Zhou, Song Qin, Jaebum Choo, Lingxin Chen
In this work, we developed a novel strategy using fluorescent quantum dots (QDs) combined with molecularly imprinted polymers (MIPs) on three-dimensional (3D) origami paper-based microfluidic devices for specific recognition and sensitive detection of phycocyanin. This method can realize the liquid phase of QDs@MIPs being transferred to the solid-phase paper base and achieve easy portability for the analysis. Under optimal conditions, we successfully demonstrated the proposed paper@QDs@MIPs 3D microfluidic chip for the sensitive and selective detection of phycocyanin protein target in a simple and robust manner...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723139/sensitive-cytokine-assay-based-on-optical-fiber-allowing-localized-and-spatially-resolved-detection-of-interleukin-6
#20
Guozhen Liu, Kaixin Zhang, Annemarie Nadort, Mark R Hutchinson, Ewa M Goldys
We demonstrated a cytokine detection device based on gold nanoparticle modified silica optical fiber for the monitoring of locally variable cytokine interleukin-6 (IL-6) concentrations using a sandwich immunoassay scheme. The fiber is designed to be introduced into an intrathecal catheter with micrometer-sized holes drilled along its length to enable fluid exchange between the outside and inside of the catheter. An exposed optical fiber (diameter 125 μm) modified with a layer of gold nanoparticles was functionalized with the IL-6 capture antibody to form the sensing interface...
February 24, 2017: ACS Sensors
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