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https://www.readbyqxmd.com/read/28929829/quantitative-sensory-testing-for-assessment-of-somatosensory-function-in-human-oral-mucosa-a-review
#1
Pin Zhou, Yaming Chen, Jinglu Zhang, Kelun Wang, Peter Svensson
OBJECTIVE: This narrative review provides an overview of the quantitative sensory testing (QST) to assess somatosensory function in human oral mucosa. MATERIAL AND METHODS: A literature search was conducted in the PubMed database to identify studies in vivo on human oral mucosa using QST methods. A list of 149 articles was obtained and screened. A total of 36 relevant articles remained and were read in full text. Manual search of the reference lists identified eight additional relevant studies...
September 20, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28929244/analyzing-polymeric-matrix-for-fabrication-of-a-biodegradable-microneedle-array-to-enhance-transdermal-delivery
#2
Kuo-Yuan Hwa, Vincent H S Chang, Yao-Yi Cheng, Yue-Da Wang, Pey-Shynan Jan, Boopathi Subramani, Min-Ju Wu, Bo-Kai Wang
Traditional drug delivery systems, using invasive, transdermal, and oral routes, are limited by various factors, such as the digestive system environment, skin protection, and sensory nerve stimulation. To improve the drug delivery system, we fabricated a polysaccharide-based, dissolvable microneedle-based array, which combines the advantages of both invasive and transdermal delivery systems, and promises to be an innovative solution for minimally invasive drug delivery. In this study, we designed a reusable aluminum mold that greatly improved the efficiency and convenience of microneedle fabrication...
September 19, 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28899680/the-cephalic-phase-insulin-response-to-nutritive-and-low-calorie-sweeteners-in-solid-and-beverage-form
#3
Jaapna Dhillon, Janice Y Lee, Richard D Mattes
The purpose of the study was to examine the role of the cephalic phase insulin response (CPIR) following exposure to nutritive and low-calorie sweeteners in solid and beverage form in overweight and obese adults. In addition, the role of learning on the CPIR to nutritive and low-calorie sweetener exposure was tested. Sixty-four overweight and obese adults (age: 18-50years, BMI: 24-37kg/m(2), body fat percentage>25% for men and >32% for women) were sham-fed (at 2-minute intervals for 14min) a randomly assigned test load comprised of a nutritive (sucrose) or low-calorie sweetener (sucralose) in beverage or solid form in phase 1 of the study...
September 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28865394/clinical-measures-of-balance-in-people-with-type-two-diabetes-a-systematic-literature-review
#4
REVIEW
C J Dixon, T Knight, E Binns, B Ihaka, D O'Brien
Approximately 422 million people have diabetes mellitus worldwide, with the majority diagnosed with type 2 diabetes mellitus (T2DM). The complications of diabetes mellitus include diabetic peripheral neuropathy (DPN) and retinopathy, both of which can lead to balance impairments. Balance assessment is therefore an integral component of the clinical assessment of a person with T2DM. Although there are a variety of balance measures available, it is uncertain which measures are the most appropriate for this population...
August 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28860992/rewarding-effects-of-operant-dry-licking-behavior-on-neuronal-firing-in-the-nucleus-accumbens-core
#5
Enrico Patrono, Jumpei Matsumoto, Hiroshi Nishimaru, Yusaku Takamura, Ikhruud C Chinzorig, Taketoshi Ono, Hisao Nishijo
Certain eating behaviors are characterized by a trend of elevated food consumption. However, neural mechanisms mediating the motivation for food consumption are not fully understood. Food impacts the brain-rewarding-system via both oral-sensory and post-ingestive information. Recent studies have reported an important role of visceral gut information in mediating dopamine (DA) release in the brain rewarding system. This is independent of oral sensation, suggesting a role of the gut-brain-DA-axis in feeding behavior...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28856690/the-transcription-factor-phox2b-distinguishes-between-oral-and-non-oral-sensory-neurons-in-the-geniculate-ganglion
#6
Lisa Ohman-Gault, Tao Huang, Robin Krimm
Many basic characteristics of gustatory neurons remain unknown, partly due to the absence of specific markers. Some neurons in the geniculate ganglion project to taste regions in the oral cavity, whereas others innervate the outer ear. We hypothesized that the transcription factor Phox2b would identify oral cavity-projecting neurons in the geniculate ganglion. To test this possibility, we characterized mice in which Phox2b-Cre mediated gene recombination labeled neurons with tdTomato. Nerve labeling revealed that all taste neurons projecting through the chorda tympani (27%) and greater superficial petrosal nerves (15%) expressed Phox2b during development, whereas non-oral somatosensory neurons (58%) in the geniculate ganglion did not...
August 30, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28839378/a-novel-quantitative-prediction-approach-for-astringency-level-of-herbs-based-on-an-electronic-tongue
#7
Xue Han, Hong Jiang, Dingkun Zhang, Yingying Zhang, Xi Xiong, Jiaojiao Jiao, Runchun Xu, Ming Yang, Li Han, Junzhi Lin
BACKGROUND: The current astringency evaluation for herbs has become dissatisfied with the requirement of pharmaceutical process. It needed a new method to accurately assess astringency. METHODS: First, quinine, sucrose, citric acid, sodium chloride, monosodium glutamate, and tannic acid (TA) were analyzed by electronic tongue (e-tongue) to determine the approximate region of astringency in partial least square (PLS) map. Second, different concentrations of TA were detected to define the standard curve of astringency...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28811549/diagnosing-peri-implant-disease-using-the-tongue-as-a-24-7-detector
#8
J Ritzer, T Lühmann, C Rode, M Pein-Hackelbusch, I Immohr, U Schedler, T Thiele, S Stübinger, B V Rechenberg, J Waser-Althaus, F Schlottig, M Merli, H Dawe, M Karpíšek, R Wyrwa, M Schnabelrauch, L Meinel
Our ability of screening broad communities for clinically asymptomatic diseases critically drives population health. Sensory chewing gums are presented targeting the tongue as 24/7 detector allowing diagnosis by "anyone, anywhere, anytime". The chewing gum contains peptide sensors consisting of a protease cleavable linker in between a bitter substance and a microparticle. Matrix metalloproteinases in the oral cavity, as upregulated in peri-implant disease, specifically target the protease cleavable linker while chewing the gum, thereby generating bitterness for detection by the tongue...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28796325/temporal-texture-profile-and-identification-of-glass-transition-temperature-as-an-instrumental-predictor-of-stickiness-in-a-caramel-system
#9
Emily J Mayhew, Shelly J Schmidt, Pascal Schlich, Soo-Yeun Lee
Stickiness is an important texture attribute in many food systems, but its meaning can vary by person, product, and throughout mastication. This variability and complexity makes it difficult to devise analytical tests that accurately and consistently predict sensory stickiness. Glass transition temperature (Tg ) is a promising candidate for texture prediction. Our objective is to elucidate the temporal profile of stickiness in order to probe the relationship between Tg and dynamic stickiness perception. Nine caramel samples with diverse texture and thermal profiles were produced for sensory testing and differential scanning calorimetry...
August 10, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28738104/psychosocial-profiles-of-temporomandibular-disorder-pain-patients-proposal-of-a-new-approach-to-present-complex-data
#10
Simple Futarmal Kothari, Lene Baad-Hansen, Peter Svensson
AIMS: To propose a visual method to screen and assess psychosocial functioning in temporomandibular disorder (TMD) pain patients in comparison with age- and gender-matched healthy controls by forming individual profiles and to evaluate the association between psychosocial profiles and quantitative sensory testing (QST) findings of TMD pain patients. METHODS: TMD patients (n = 58) and control participants (n = 41) completed a set of questionnaires profiling their psychosocial function, and QST was performed at the temporomandibular joint (TMJ) on both sides of the face in all participants...
July 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28728082/oral-infections-comorbidities-and-sensory-evidences-in-elderly-cross-sectional-study
#11
Nathalia Santos Viana Silva, Luciana Alvarenga da Silva, Omar Jaluul, Wilson Jacob-Filho, Silvia Regina Dowgan Tesseroli de Siqueira
BACKGROUND: Oral infections affect the general health and overlap with chronic diseases due to infectious-immune mechanisms. On the other side, sensory abnormalities may be symptoms of this association. OBJECTIVE: To evaluate the prevalence of oral infections, comorbidities, health parameters and sensory abnormalities in elderly patients. METHODS: Thirty (30) elderly with mean age 70.4 yo, distributed according to ages were evaluated with a protocol that included demographics, comorbidities, medications, laboratory tests, blood pressure, heart rate, mini-mental state examination, clinical oral evaluation and systematized sensory testing (gustative, olfactory, thermal, mechanical and pain thresholds)...
July 1, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28719961/artyfechinostomum-malayanum-metacercariae-encysted-in-pila-sp-snails-purchased-from-phnom-penh-cambodia
#12
Woon-Mok Sohn, Tai-Soon Yong, Keeseon S Eom, Muth Sinuon, Hoo-Gn Jeoung, Jong-Yil Chai
The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145-165 μm in diameter, having a cyst wall of 6-10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28686664/somatosensory-function-in-patients-with-secondary-adrenal-insufficiency-treated-with-two-different-doses-of-hydrocortisone-results-from-a-randomized-controlled-trial
#13
Jorien Werumeus Buning, Karl-Heinz Konopka, Pauline Brummelman, Janneke Koerts, Robin P F Dullaart, Gerrit van den Berg, Melanie M van der Klauw, Oliver Tucha, Bruce H R Wolffenbuttel, André P van Beek
BACKGROUND: Low cortisol levels are associated with several functional pain syndromes. In patients with secondary adrenal insufficiency (SAI), the lack in endogenous cortisol production is substituted by the administration of oral hydrocortisone (HC). Our previous study showed that a lower dose of HC led to an increase in reported subjective pain symptoms. Whether different doses of HC substitution alter somatosensory functioning in SAI patients has not been established yet. METHODS: In this randomized double blind cross-over trial, forty-six patients with SAI participated...
2017: PloS One
https://www.readbyqxmd.com/read/28680300/repeated-oral-administration-of-human-serum-albumin-protects-from-the-cerebral-ischemia-in-rat-brain-following-mcao
#14
Hyejin Park, Minyoung Hong, Gil-Ja Jhon, Youngmi Lee, Minah Suh
Albumin is known to have neuroprotective effects. The protein has a long half-life circulation, and its effects can therefore persist for a long time to aid in the recovery of brain ischemia. In the present study, we investigated the neuroprotective effects of human serum albumin (HSA) on brain hemodynamics. Albumin is administrated using repeated oral gavage to the rodents. Sprague-Dawley rats underwent middle cerebral artery occlusion procedures and served as a stroke model. Afterwards, 25% human serum albumin (1...
June 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28624575/intestinal-fungal-dysbiosis-associates-with-visceral-hypersensitivity-in-patients-with-irritable-bowel-syndrome-and-rats
#15
Sara Botschuijver, Guus Roeselers, Evgeni Levin, Daisy M Jonkers, Olaf Welting, Sigrid Em Heinsbroek, Heleen H de Weerd, Teun Boekhout, Matteo Fornai, Ad A Masclee, Frank H J Schuren, Wouter J de Jonge, Jurgen Seppen, Rene M van den Wijngaard
BACKGROUND & AIMS: Visceral hypersensitivity is one feature of irritable bowel syndrome (IBS). Bacterial dysbiosis might be involved in activation of nociceptive sensory pathways, but there have been few studies of the role of the mycobiome (the fungal microbiome) in development of IBS. We analyzed intestinal mycobiomes of patients with IBS and a rat model of visceral hypersensitivity. METHODS: We used internal transcribed spacer 1-based metabarcoding to compare fecal mycobiomes of 18 healthy volunteers with those of 39 patients with IBS (with visceral hypersensitivity or normal levels of sensitivity)...
June 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28595328/genetic-lineage-tracing-in-taste-tissues-using-sox2-creert2-strain
#16
Makoto Ohmoto, Wenwen Ren, Yugo Nishiguchi, Junji Hirota, Peihua Jiang, Ichiro Matsumoto
Taste cells in taste buds are epithelial sensory cells. Old taste bud cells die and are replaced by new ones generated from taste stem cells. Identifying and characterizing adult taste stem cells is therefore important to understand how peripheral taste tissues are maintained. SOX2 is expressed in oral epithelium including gustatory papillae and has been proposed to be a marker of adult taste stem/progenitor cells. Nevertheless, this hypothesis has never been directly tested. Here, by single-color genetic lineage tracing using Sox2-CreERT2 strain, we reveal that all types of taste bud cells distributed throughout the oral epithelium are derived from stem cells that express SOX2...
September 1, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28573724/human-roughness-perception-and-possible-factors-effecting-roughness-sensation
#17
Tugba Aktar, Jianshe Chen, Rammile Ettelaie, Melvin Holmes, Brian Henson
Surface texture sensation is significant for business success, in particular for solid surfaces for most of the materials; including foods. Mechanisms of roughness perception are still unknown, especially under different conditions such as lubricants with varying viscosities, different temperatures, or under different force loads during the observation of the surface. This work aims to determine the effect of those unknown factors, with applied sensory tests on 62 healthy participants. Roughness sensation of fingertip was tested under different lubricants including water and diluted syrup solutions at room temperature (25C) and body temperature (37C) by using simple pair-wise comparison to observe the just noticeable difference threshold and perception levels...
June 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28573374/effects-of-trpv1-and-trpa1-activators-on-the-cramp-threshold-frequency-a-randomized-double-blind-placebo-controlled-trial
#18
Michael Behringer, Stephanie Nowak, Jannik Leyendecker, Joachim Mester
PURPOSE: Previous data indicate that a strong sensory input from orally administered TRPV1 and TRPA1 activators alleviates muscle cramps in foot muscles by reducing the α-motor neuron hyperexcitability. We investigated if TRP activators increase the cramp threshold frequency of the medial gastrocnemius. METHODS: We randomly assigned 22 healthy male participants to an intervention (IG) and a control group (CG). While participants of the IG ingested a mixture of TRPV1 and TRPA1 activators, the CG received a placebo...
August 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28556911/a-comparison-of-the-lubrication-behavior-of-whey-protein-model-foods-using-tribology-in-linear-and-elliptical-movement
#19
Caroline L Campbell, E Allen Foegeding, Fred van de Velde
Lubrication is an important factor in the sensory evaluation of food products. Tribology provides a theoretical framework and instrumental methods for evaluating frictional properties between two moving surfaces and the lubrication behavior of products between these surfaces. Relating frictional measurements to sensory properties detected during oral processing requires careful and pertinent choices in surface materials and testing conditions. The aims of this study were to investigate: (a) differences in lubrication behavior of a range of food textures and (b) the differences between linear and elliptical movement and added saliva to understand the contribution of food structure to friction...
May 29, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28556476/neurophysiological-changes-associated-with-implant-associated-augmentation-procedures-in-the-lower-jaw
#20
Amely Hartmann, Claudia Welte-Jzyk, Marcus Seiler, Monika Daubländer
BACKGROUND: Neurophysiological changes after oral and maxillofacial surgery remain one of the topics of current research. PURPOSE: This study evaluated if implant placement associated with augmentation procedures increases the possibility of sensory disturbances or result in impaired quality of life during the healing period. MATERIAL AND METHODS: Patients who had obtained an implant placement in the lower jaw in combination with augmentation procedures were examined by implementing a comprehensive Quantitative Sensory Testing (QST) protocol for extra- and intraoral use...
May 29, 2017: Clinical Implant Dentistry and related Research
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