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https://www.readbyqxmd.com/read/29767510/non-enzymatic-wearable-sensor-for-electrochemical-analysis-of-perspiration-glucose
#1
Xiaofei Zhu, Yinhui Ju, Jian Chen, Deye Liu, Hong Liu
We report a non-enzymatic wearable sensor for electrochemical analysis of perspiration glucose. Multi-potential steps are applied on a Au electrode, including a high negative pretreatment potential step for proton reduction which produc-es a localized alkaline condition, a moderate potential step for electrocatalytic oxidation of glucose under the alkaline condi-tion, and a positive potential step to clean and reactivate the electrode surface for the next detection. Fluorocarbon-based materials were coated on the Au electrode for improving the selectivity and robustness of the sensor...
May 16, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29761203/the-weighing-chair-of-sanctorius-sanctorius-a-replica
#2
Teresa Hollerbach
In 1614, the physician Sanctorius Sanctorius (1561-1636) published his most famous work entitled Ars […] de statica medicina (On static medicine). This is a work composed of aphorisms that present the practical results of a series of weighing procedures, rather than theoretical observations. De statica medicina is the result of a large number of test series that Sanctorius carried out over many years with the weighing chair he constructed himself in order to quantify the so-called perspiratio insensibilis, an insensible perspiration of the human body...
May 14, 2018: NTM
https://www.readbyqxmd.com/read/29715706/needlescopic-video-assisted-thoracic-bilateral-t4-sympathicotomy-for-the-treatment-of-primary-palmar-hyperhidrosis-an-analysis-of-200-cases
#3
Xing Feng, Xiaoling Xiong, Er Jin, Wen Meng
BACKGROUND:  Primary palmar hyperhidrosis (PPH) is featured by aberrantly perspiration of the hands, which may bring a lot of inconvenience to patient's daily life and work. The purpose of this study is to summarize the clinical effect of needlescopic video-assisted thoracic bilateral T4 sympathicotomy for the treatment of PPH. PATIENTS AND METHODS:  Between January 2009 and March 2014, 200 patients received needlescopic video-assisted thoracic bilateral T4 sympathicotomy...
May 1, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/29695724/simultaneous-lancet-free-monitoring-of-alcohol-and-glucose-from-low-volumes-of-perspired-human-sweat
#4
Ashlesha Bhide, Sriram Muthukumar, Amreek Saini, Shalini Prasad
A lancet-free, label-free biosensor for simultaneous detection of sweat glucose and alcohol was demonstrated using zinc oxide thin films integrated into a nanoporous flexible electrode system. Sensing was achieved from perspired human sweat at low volumes (1-3 μL), comparable to ambient conditions without external stimulation. Zinc oxide thin film electrodes were surface functionalized with alcohol oxidase enzyme and with glucose oxidase enzyme towards developing an affinity biosensor specific to the physiological relevant range of alcohol comprising of 0-2 drinks (0-50 mg/dl) and physiologically relevant range of glucose ranging from hypo- to hyper-glycaemia (50-130 mg/dl) in perspired human sweat...
April 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29659250/concurrent-harvesting-ambient-energy-by-hybrid-nanogenerators-for-wearable-self-powered-systems-and-active-remote-sensing
#5
Haiwu Zheng, Yunlong Zi, Xu He, Hengyu Guo, Ying-Chih Lai, Jie Wang, Steven L Zhang, Changsheng Wu, Gang Cheng, Zhong Lin Wang
Harvesting energy available from ambient environment is highly desirable for powering personal electronics and health applications. Due to natural process and human activities, steam can be produced by boilers, human perspiration and the wind exists ubiquitously. In the outdoor environment, these two phenomena usually exist at the same place, which contain heat and mechanical energies simultaneously. However, previous studies have isolated them as separate sources of energy to harvest and hence failed to utilize them effectively...
April 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29651916/assessment-of-exposure-risk-of-irinotecan-and-its-active-metabolite-sn-38-through-perspiration-during-chemotherapy
#6
Kei Irie, Akira Okada, Yoshio Masuda, Keizo Fukushima, Nobuyuki Sugioka, Chiyuki Okuda, Akito Hata, Reiko Kaji, Yutaka Okada, Nobuyuki Katakami, Shoji Fukushima
Background Irinotecan (CPT-11) is the key drug used in chemotherapy for many malignant tumors. CPT-11 has cholinergic activity and induces perspiration during intravenous administration. In this study, concentrations of CPT-11 and its active metabolite, SN-38, released during perspiration were measured and risk of exposure of these drugs was assessed. Method Beads of sweat were collected using a dropper from four patients undergoing a chemotherapy regimen involving intravenous administration of CPT-11. The concentrations of CPT-11 and SN-38 in sweat were measured using liquid chromatography tandem mass spectrometry...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29618907/green-tobacco-sickness-a-brief-review
#7
REVIEW
Shailee Fotedar, Vikas Fotedar
Green tobacco sickness (GTS) is the condition that mainly affects the tobacco harvesters. The condition is prevalent in Asian and South American tobacco harvesters. The present review was conducted to discuss the etiology, epidemiology, symptoms, and prevention of GTS. It is caused by the absorption of nicotine through the skin while the workers are engaged in handling the uncured tobacco leaves. The symptoms include nausea, vomiting, pallor, dizziness, headaches, increased perspiration, chills, abdominal pain, diarrhea, increased salivation, prostration, weakness, breathlessness, and occasional lowering of blood pressure...
September 2017: Indian Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29608436/dental-anxiety-among-israeli-postgraduate-pediatric-dental-students-and-their-instructors
#8
Sigalit Blumer, Diana Ram, Liora Costa, Benjamin Peretz
OBJECTIVE: To measure the dental anxiety levels of post-graduate pediatric dental students (PGS) and their instructors, and their ranking of the most anxiety provoking situations in the dental situation; to investigate gender differences with regard to dental anxiety. STUDY DESIGN: Twenty-four PGS and 31 of their instructors completed a three-section questionnaire on socio demographic information, dental anxiety scale (DAS) and dental fear survey (DFS). RESULTS: The overall mean DAS and DFS scores were similar for both groups...
2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29547773/portable-electrochemical-sensor-based-on-4-aminobenzoic-acid-functionalized-herringbone-carbon-nanotubes-for-the-determination-of-ascorbic-acid-and-uric-acid-in-human-fluids
#9
A Abellán-Llobregat, C González-Gaitán, L Vidal, A Canals, E Morallón
A new portable electrochemical sensor based on 4-aminobenzoic acid-modified herringbone carbon nanotubes (hCNTs-4ABA/Au-IDA) has been developed for the simultaneous determination of ascorbic acid (AA) and uric acid (UA) in physiological fluids. AA and UA were quantified by chronoamperometry at 0.1 and 0.32 V, respectively, in phosphate buffer solution (PBS 0.25 M, pH 7.0). Significant results were obtained for the separate quantification of AA and UA, with a limit of detection (LOD) of 0.65 μM for both analytes, and sensitivities of (9...
June 30, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29500398/a-printed-organic-amplification-system-for-wearable-potentiometric-electrochemical-sensors
#10
Rei Shiwaku, Hiroyuki Matsui, Kuniaki Nagamine, Mayu Uematsu, Taisei Mano, Yuki Maruyama, Ayako Nomura, Kazuhiko Tsuchiya, Kazuma Hayasaka, Yasunori Takeda, Takashi Fukuda, Daisuke Kumaki, Shizuo Tokito
Electrochemical sensor systems with integrated amplifier circuits play an important role in measuring physiological signals via in situ human perspiration analysis. Signal processing circuitry based on organic thin-film transistors (OTFTs) have significant potential in realizing wearable sensor devices due to their superior mechanical flexibility and biocompatibility. Here, we demonstrate a novel potentiometric electrochemical sensing system comprised of a potassium ion (K+ ) sensor and amplifier circuits employing OTFT-based pseudo-CMOS inverters, which have a highly controllable switching voltage and closed-loop gain...
March 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29491276/effect-of-passion-fruit-seed-extract-rich-in-piceatannol-on-the-skin-of-women-a-randomized-placebo-controlled-double-blind-trial
#11
Hiroko Maruki-Uchida, Minoru Morita, Yoshikazu Yonei, Masahiko Sai
Piceatannol has been reported to have a wide variety of effects on the skin, including promoting collagen production, inhibiting melanin synthesis, inducing the antioxidant glutathione, and eliminating reactive oxygen species. In this study, a randomized, placebo-controlled, double-blind trial was conducted to clinically evaluate the effects of piceatannol-rich passion fruit seed extract on the skin of healthy Japanese women (age, 35-54 y). Thirty-two women with dry skin received either passion fruit seed extract (5 mg piceatannol) or a placebo (dextrin) for 8 wk...
2018: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/29481417/so-you-want-to-be-a-success-aspire-inspire-and-perspire-a-lot
#12
Rod J Rohrich
No abstract text is available yet for this article.
March 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29459303/the-human-skin-as-a-sub-thz-receiver-does-5g-pose-a-danger-to-it-or-not
#13
Noa Betzalel, Paul Ben Ishai, Yuri Feldman
In the interaction of microwave radiation and human beings, the skin is traditionally considered as just an absorbing sponge stratum filled with water. In previous works, we showed that this view is flawed when we demonstrated that the coiled portion of the sweat duct in upper skin layer is regarded as a helical antenna in the sub-THz band. Experimentally we showed that the reflectance of the human skin in the sub-THz region depends on the intensity of perspiration, i.e. sweat duct's conductivity, and correlates with levels of human stress (physical, mental and emotional)...
May 2018: Environmental Research
https://www.readbyqxmd.com/read/29447045/a-four-channel-electrical-impedance-spectroscopy-module-for-cortisol-biosensing-in-sweat-based-wearable-applications
#14
Devangsingh Sankhala, Sriram Muthukumar, Shalini Prasad
A four-channel electrochemical impedance spectroscopy (EIS) analyzer module has been demonstrated on flexible chemi-impedance sensors fabricated with gold electrodes for wearable applications. The module can perform time division multiplexed (TDM) impedance measurements on four sensors at 1 kHz. In this work, we characterize the system for the detection of cortisol in an ultralow volume (1-3 µL) of perspired human sweat, sensor performance, and effects during continuous cortisol dosing and with pH and temperature variations expected on the surface of the skin that would be representative of use conditions as seen by a wearable device...
February 1, 2018: SLAS Technology
https://www.readbyqxmd.com/read/29329593/targeting-ectodysplasin-promotor-by-crispr-dcas9-effector-effectively-induces-the-reprogramming-of-human-bone-marrow-derived-mesenchymal-stem-cells-into-sweat-gland-like-cells
#15
Sujing Sun, Jun Xiao, Jiahui Huo, Zhijun Geng, Kui Ma, Xiaoyan Sun, Xiaobing Fu
BACKGROUND: Patients with a deep burn injury are characterized by losing the function of perspiration and being unable to regenerate the sweat glands. Because of their easy accession, multipotency, and lower immunogenicity, bone marrow-derived mesenchymal stem cells (BM-MSCs) represent as an ideal biological source for cell therapy. The aim of this study was to identify whether targeting the promotor of ectodysplasin (EDA) by CRISPR/dCas9-effector (dCas9-E) could induce the BM-MSCs to differentiate into sweat gland-like cells (SGCs)...
January 12, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29249879/a-spectrophotometric-analysis-of-extraoral-aging-conditions-on-the-color-stability-of-maxillofacial-silicone
#16
Siddharth Mehta, D B Nandeeshwar
Context: Surveys have reported color fading as the most frequent reasons patients given for disliking their prostheses. Aim: The aim of the study is to compare the color variation between two maxillofacial silicone elastomers after subjecting them to extraoral aging conditions. Subjects and Methods: A total of 80 samples were made from M511 Maxillofacial Rubber (Part A: Part B = 10:1) and Z004 Platinum Silicone Rubber (Part A: Part B = 1:1) and divided into two main Groups A and B (40 each)...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29233679/graphene-paper-supported-mos-2-nanocrystals-monolayer-with-cu-submicron-buds-high-performance-flexible-platform-for-sensing-in-sweat
#17
Zhengyun Wang, Shuang Dong, Mengxi Gui, Muhammad Asif, Wei Wang, Feng Wang, Hongfang Liu
Flexible sweat biosensors are of considerable current interest for the development of wearable smart miniature devices. In this work, we report a novel type of flexible and electrochemical sweat platform fabricated by depositing Cu submicron buds on freestanding graphene paper (GP) carrying MoS2 nanocrystals monolayer for bio-functional detection of glucose and lactate. Quantitative analysis of glucose and lactate was carried out by using amperometric i-t method. Linear ranges were obtained between 5 and 1775 μM for glucose and 0...
February 15, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29171366/-palmar-and-axillary-hyperhidrosis-in-children-endoscopic-thoracic-sympathectomy-using-clips-for-an-underestimated-problem
#18
S M Hermelijn, I H Boersma, M H Dekker, S van Duin, J M Schnater
BACKGROUND: Palmar and axillary hyperhidrosis are defined as perspiration exceeding the body's 'normal' physiological need for thermal regulation. This condition affects about 1% of adolescents and children and may lead to psychosocial problems and poor school performance. CASE DESCRIPTION: We carried out an endoscopic thoracic sympathectomy (ETS) with clips in a 14-year-old girl and a 16-year-old girl who suffered from debilitating palmar and axillary hyperhidrosis...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29168215/non-corticosteroid-adherence-and-itch-severity-influence-perception-of-itch-in-atopic-dermatitis
#19
Satoshi Takeuchi, Junna Oba, Hitokazu Esaki, Masutaka Furue
Topical corticosteroid phobia is an important problem in the treatment of atopic dermatitis as it can affect the ability to control disease severity and itch by reducing treatment adherence. Topical corticosteroid phobia often ends up even non-corticosteroid adherence. As such, non-corticosteroid adherence, disease severity and itch are likely to be associated with each other, but their relationship has yet to be thoroughly investigated. Thus, the purpose of this study is to investigate it in atopic dermatitis...
February 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29128285/prolonged-and-localized-sweat-stimulation-by-iontophoretic-delivery-of-the-slowly-metabolized-cholinergic-agent-carbachol
#20
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...
January 2018: Journal of Dermatological Science
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