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https://www.readbyqxmd.com/read/29128285/prolonged-and-localized-sweat-stimulation-by-iontophoretic-delivery-of-the-slowly-metabolized-cholinergic-agent-carbachol
#1
Phillip Simmers, S Kevin Li, Gerald Kasting, Jason Heikenfeld
BACKGROUND: Continuous non-invasive sampling and sensing of multiple classes of analytes could revolutionize medical diagnostics and wearable technologies, but also remains highly elusive because of the many confounding factors for candidate biofluids such as interstitial fluid, tears, saliva, and sweat. Eccrine sweat biosensing has seen a recent surge in demonstrations of wearable sampling and sensing devices. However, for subjects at rest, access to eccrine sweat is highly limited and unpredictable compared to saliva and tears...
November 8, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29064607/hypothalamic-pituitary-thyroid-hpt-axis-functioning-in-anxiety-disorders-a-systematic-review
#2
REVIEW
Susanne Fischer, Ulrike Ehlert
Depression has repeatedly been linked to subclinical hypothyroidism, and thyroid hormones have successfully been used to augment antidepressant treatment. By contrast, the extent of thyroid dysfunction in anxiety disorders remains less clear. This is surprising, given that anxiety-related symptoms (e.g., nervousness, palpitations, increased perspiration) are highly prevalent in hyperthyroidism. The present study was undertaken to synthesize the literature on hypothalamic-pituitary-thyroid (HPT) axis functioning in anxiety disorders...
October 24, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/29060733/development-of-a-thermal-associated-pain-index-score-using-infrared-thermography-for-objective-pain-assessment
#3
M Czaplik, N Hochhausen, H Dohmeier, C Barbosa Pereira, R Rossaint
Without any doubt, research in biomedical engineering and anesthesiology achieved diverse ground-breaking successes for the sake of patient safety and for optimization of medical treatment in the last decades. Particularly anesthesia has become increasingly comfortable and safer due to new monitoring devices and further techniques. However, assessment of pain still relies on self-reporting of the patient using a Numeric Rating Scale ranging from 0 to 10. Obviously, this method suffers from severe restraints when unconscious, anesthetized or uncooperative subjects or children are involved as patients...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29042582/portable-biosensor-for-monitoring-cortisol-in-low-volume-perspired-human-sweat
#4
David Kinnamon, Ramesh Ghanta, Kai-Chun Lin, Sriram Muthukumar, Shalini Prasad
A non-faradaic label-free cortisol biosensor was demonstrated using MoS2 nanosheets integrated into a nanoporous flexible electrode system. Low volume (1-5 μL) sensing was achieved through use of a novel sensor stack design comprised of vertically aligned metal electrodes confining semi-conductive MoS2 nanosheets. The MoS2 nanosheets were surface functionalized with cortisol antibodies towards developing an affinity biosensor specific to the physiological relevant range of cortisol (8.16 to 141.7 ng/mL) in perspired human sweat...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923015/transcriptome-analysis-of-pseudostellaria-heterophylla-in-response-to-the-infection-of-pathogenic-fusarium-oxysporum
#5
Xianjin Qin, Hongmiao Wu, Jun Chen, Linkun Wu, Sheng Lin, Muhammad Umar Khan, Mohammad Reza Boorboori, Wenxiong Lin
BACKGROUND: Pseudostellaria heterophylla (P. heterophylla), a herbaceous perennial, belongs to Caryophyllaceae family and is one of the Chinese herbal medicine with high pharmacodynamic value. It can be used to treat the spleen deficiency, anorexia, weakness after illness and spontaneous perspiration symptoms. Our previous study found that consecutive monoculture of Pseudostellaria heterophylla could lead to the deterioration of the rhizosphere microenvironment. The specialized forms of pathogenic fungus Fusarium oxysporum f...
September 18, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28858812/a-thermally-powered-isfet-array-for-on-body-ph-measurement
#6
Matthew Douthwaite, Ermis Koutsos, David C Yates, Paul D Mitcheson, Pantelis Georgiou
Recent advances in electronics and electrochemical sensors have led to an emerging class of next generation wearables, detecting analytes in biofluids such as perspiration. Most of these devices utilize ion-selective electrodes (ISEs) as a detection method; however, ion-sensitive field-effect transistors (ISFETs) offer a solution with improved integration and a low power consumption. This work presents a wearable, thermoelectrically powered system composed of an application-specific integrated circuit (ASIC), two commercial power management integrated circuits and a network of commercial thermoelectric generators (TEGs)...
August 24, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28803369/volume-balance-and-intradialytic-ultrafiltration-rate-in-the-hemodialysis-patient
#7
REVIEW
Jason A Chou, Kamyar Kalantar-Zadeh
PURPOSE OF REVIEW: Volume management in hemodialysis patients is often challenging. Assessing volume status and deciding how much fluid to remove during hemodialysis, the so-called ultrafiltration rate (UFR), has remained a conundrum. RECENT FINDINGS: To date there is no objective assessment tool to determine the needed UFR during each hemodialysis session. Higher volume overload or higher UFR is associated with poor outcomes including worse mortality and unfavorable clinical outcomes...
October 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28795753/single-wearable-sensing-energy-device-based-on-photoelectric-biofuel-cells-for-simultaneous-analysis-of-perspiration-and-illuminance
#8
You Yu, Junfeng Zhai, Yong Xia, Shaojun Dong
Wearable electronics are essential for the construction of epidermal energy supply and portable healthcare devices. Herein, a self-powered wearable electronic device based on a photoelectric biofuel cell has been introduced for the first time to simultaneously detect the perspiration lactate and monitor the ambient illuminance depending on independent parameters. The functions of harvesting energy, detection of body function and monitoring of ambient have been merged into a single wireless sensor. This novel design may provide a wide range of smart and exciting wearable electronics...
August 24, 2017: Nanoscale
https://www.readbyqxmd.com/read/28782691/first-case-of-autonomic-dysreflexia-following-elective-lower-thoracic-spinal-cord-transection-in-a-spina-bifida-adult
#9
Juanita Garces, Mansour Mathkour, Tyler Scullen, Lora Kahn, Erin Biro, Alex Pham, Olawale A R Sulaiman, Roger Smith, Cuong J Bui
BACKGROUND: Spinal cord transection is a radical but effective treatment for highly selective cases of symptomatic spinal retethering in paraplegic spina bifida patients. Autonomic dysreflexia (AD) is a potentially life-threatening syndrome involving a dysregulated sympathetic discharge reflex commonly seen following cervical and high thoracic spinal cord injury, leading to a disconnect between autonomic pathways above and below the lesion that can lead to severe complications including uncontrolled hypertension, bradycardia, stroke, and potentially death...
August 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28782353/a-self-powered-wearable-noninvasive-electronic-skin-for-perspiration-analysis-based-on-piezo-biosensing-unit-matrix-of-enzyme-zno-nanoarrays
#10
Wuxiao Han, Haoxuan He, Linlin Zhang, Chuanyi Dong, Hui Zeng, Yitong Dai, Lili Xing, Yan Zhang, Xinyu Xue
The emerging multifunctional flexible electronic-skin for establishing body-electric interaction can enable real-time monitoring of personal health status as a new personalized medicine technique. A key difficulty in the device design is the flexible power supply. Here a self-powered wearable noninvasive electronic-skin for perspiration analysis has been realized on the basis of a piezo-biosensing unit matrix of enzyme/ZnO nanoarrays. The electronic-skin can detect lactate, glucose, uric acid, and urea in the perspiration, and no outside electrical power supply or battery is used in the biosensing process...
August 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28748727/silk-fabric-dyed-with-extract-of-sophora-flower-bud
#11
Su Yan, Shanshan Pan, Junling Ji
This study analysed the use of sophora flower bud extract for dyeing and the resulting colour character and fastness of dyed silk fabric. The pigment composition on the silk fabric and recycling of this extract were also studied. The results indicated that the dyed silk fabric possessed good washing, rubbing and perspiration fastness, and the pigment composition on the silk fabric was mainly rutin and quercetin. The average recovery rate of the dye was 55.00%. These results demonstrate that the sophora flower bud extract is an effective natural dye...
July 27, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28724276/fatal-small-intestinal-ischemia-due-to-methamphetamine-intoxication-report-of-a-case-with-autopsy-results
#12
Hamid Attaran
Methamphetamine is one of the most common abused drugs, so its various effects on different body organs should be familiar to all physicians. Regarding its gastrointestinal sequels, there are few reports of ischemic colitis induced by its vasoconstrictive effects. This is the first report of isolated small intestinal infarction resulting in death following methamphetamine toxicity. A 40-year-old woman with a past history of medical treatment for obesity referred to hospital with severe chest and back pain, perspiration, nausea, agitation, high blood pressure, bradycardia and subsequent lethargy and vasomotor instability...
May 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28706557/comparative-pharmacokinetics-and-bioavailability-of-three-ephedrines-in-rat-after-oral-administration-of-unprocessed-and-honey-fried-ephedra-extract-by-response-surface-experimental-design
#13
Yezhe Cheng, Yu Zhang, Hang Xing, Kun Qian, Longshan Zhao, Xiaohui Chen
Ephedra have been used as a common traditional Chinese medicine for thousands of years. However, the perspiration effect of the unprocessed ephedra was too strong. Clinical trials have shown that processing methods play a critical role in moderating the perspiration property of ephedra according to the needs. A LC-MS/MS method was developed and validated to compare the pharmacokinetic properties of the three ephedrines after oral administration of unprocessed and honey-fried ephedra extract. The contents of honey, frying temperature, and frying time were set at 20%, 116°C, and 7 min by the Box-Behnken response surface method, respectively...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28675233/integrated-sudomotor-axon-reflex-sweat-stimulation-for-continuous-sweat-analyte-analysis-with-individuals-at-rest
#14
Zachary Sonner, Eliza Wilder, Trudy Gaillard, Gerald Kasting, Jason Heikenfeld
Eccrine sweat has rapidly emerged as a non-invasive, ergonomic, and rich source of chemical analytes with numerous technological demonstrations now showing the ability for continuous electrochemical sensing. However, beyond active perspirers (athletes, workers, etc.), continuous sweat access in individuals at rest has hindered the advancement of both sweat sensing science and technology. Reported here is integration of sudomotor axon reflex sweat stimulation for continuous wearable sweat analyte analysis, including the ability for side-by-side integration of chemical stimulants & sensors without cross-contamination...
July 25, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28667529/unbiased-race-based-massive-parallel-surveys-of-human-iga-antibody-repertoires
#15
Hanane El Bannoudi, Céline Anquetil, Marc J Braunstein, Sergei L Kosakovsky Pond, Gregg J Silverman
For investigations of human B-cell receptor (BCR) repertoires, we have developed a protocol for large-scale surveys of human antibody heavy chain (VH) rearrangements. Here we study IgA repertoires, as more IgA antibodies are synthesized in the human body on a daily level than all other isotypes combined. In fact, IgA is secreted at all mucosal surfaces, and it is also secreted in the perspiration that coats our cutaneous surfaces. In these studies we can characterize the IgA clonal diversity of B-cell populations obtained from any donor...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28582974/breathable-vapor-toxicant-barriers-based-on-multilayer-graphene-oxide
#16
Ruben Spitz Steinberg, Michelle Cruz, Naser G A Mahfouz, Yang Qiu, Robert H Hurt
There is tremendous interest in graphene-based membranes as protective molecular barriers or molecular sieves for separation technologies. Graphene oxide (GO) films in the dry state are known to be effective barriers for molecular transport and to expand in the presence of moisture to create enlarged intersheet gallery spaces that allow rapid water permeation. Here we explore an application for GO membranes as water-breathable barrier layers for personal protective equipment, which are designed to allow outward perspiration while protecting the wearer from chemical toxicants or biochemical agents in the local environment...
June 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28533010/initial-investigation-of-the-corrosion-stability-of-craniofacial-implants
#17
Thamara Beline, Aljomar José Vechiato Filho, Alvin G Wee, Cortino Sukotjo, Daniela Micheline Dos Santos, Thaís Bianca Brandão, Valentim Adelino Ricardo Barão
STATEMENT OF PROBLEM: Although craniofacial implants have been used for retention of facial prostheses, failures are common. Titanium undergoes corrosion in the oral cavity, but the corrosion of craniofacial implants requires evaluation. PURPOSE: The purpose of this in vitro study was to investigate the corrosion stability of commercially pure titanium (CP Ti) exposed to simulated human perspiration at 2 different pH levels (5.5 and 8). MATERIAL AND METHODS: Fifteen titanium disks were divided into 3 groups (n=5 per group)...
May 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28518006/cooling-effects-of-wearer-controlled-vaporization-for-extravehicular-activity
#18
Kunihiko Tanaka, Daiki Nagao, Kosuke Okada, Koji Nakamura
INTRODUCTION: The extravehicular activity suit currently used by the United States in space includes a liquid cooling and ventilation garment (LCVG) that controls thermal conditions. Previously, we demonstrated that self-perspiration for evaporative cooling (SPEC) garment effectively lowers skin temperature without raising humidity in the garment. However, the cooling effect is delayed until a sufficient dose of water permeates and evaporates. In the present study, we hypothesized that wearer-controlled vaporization improves the cooling effect...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28462102/systematic-review-of-type-specific-pathophysiological-symptoms-of-sasang-typology
#19
REVIEW
Yoo Ri Han, Han Byul Lee, Sang Yun Han, Byung Joo Kim, Soo Jin Lee, Han Chae
Previous studies on the Sasang typology have focused on the differential diagnosis of each Sasang type with type-specific pathophysiological symptoms (TSPS). The purpose of this study was to elucidate the latent physiological mechanism related to these clinical indicators. We searched six electronic databases for articles published from 1990 to 2015 using the Sasang typology-related keywords, and found and analyzed 35 such articles. The results were summarized into six TSPS categories: perspiration, temperature preference, sleep, defecation, urination, and susceptibility to stress...
June 2016: Integrative medicine research
https://www.readbyqxmd.com/read/28438272/inspiration-perspiration-and-execution-an-innovator-s-perspective
#20
Josh Makower
Josh Makower, MD, is a General Partner at New Enterprise Associates, Consulting Professor of Medicine at Stanford University Medical School, Co-Founder of Stanford's Biodesign Innovation Program, and Founder and Executive Chairman of the medical device incubator, ExploraMed Development, LLC.
May 2017: Surgery
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