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https://www.readbyqxmd.com/read/28817591/susceptibility-of-bovine-dental-enamel-with-initial-erosion-lesion-to-new-erosive-challenges
#1
Gabriela Cristina de Oliveira, Guida Paola Genovez Tereza, Ana Paula Boteon, Brunna Mota Ferrairo, Priscilla Santana Pinto Gonçalves, Thiago Cruvinel da Silva, Heitor Marques Honório, Daniela Rios
This in vitro study evaluated the impact of initial erosion on the susceptibility of enamel to further erosive challenge. Thirty bovine enamel blocks were selected by surface hardness and randomized into two groups (n = 15): GC- group composed by enamel blocks without erosion lesion and GT- group composed by enamel blocks with initial erosion lesion. The baseline profile of each block was determined using the profilometer. The initial erosion was produced by immersing the blocks into HCl 0.01 M, pH 2.3 for 30 seconds, under stirring...
2017: PloS One
https://www.readbyqxmd.com/read/28815484/diagnostic-performance-of-a-newly-developed-salivary-cortisol-and-cortisone-measurement-using-an-lc-ms-ms-method-with-simple-and-rapid-sample-preparation
#2
K Mészáros, G Karvaly, Z Márta, B Magda, J Tőke, N Szücs, M Tóth, K Rácz, A Patócs
BACKGROUND: Late-night salivary cortisol level is one of the first-line tests recommended by the Endocrine Society for the diagnosis of endogenous hypercortisolism. Most routine laboratories measure cortisol levels using immunoassay tests which fail to determine low cortisol levels accurately due to the numerous interfering substances. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method with simple and rapid sample preparation was developed for the simultaneous measurement of cortisol and cortisone and its performance in the diagnosis of endogenous hypercortisolism was evaluated...
August 16, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28815185/saliva-derived-host-defense-peptides-histatin1-and-ll-37-increase-secretion-of-antimicrobial-skin-and-oral-mucosa-chemokine-ccl20-in-an-il-1%C3%AE-independent-manner
#3
Mireille A Boink, Sanne Roffel, Kamran Nazmi, Jan G M Bolscher, Enno C I Veerman, Susan Gibbs
Even though skin and oral mucosae are continuously in contact with commensal and opportunistic microorganisms, they generally remain healthy and uninflamed. Host defense peptides (HDPs) make up the body's first line of defense against many invading pathogens and are involved in the orchestration of innate immunity and the inflammatory response. In this study, we investigated the effect of two salivary HDPs, LL-37 and Hst1, on the inflammatory and antimicrobial response by skin and oral mucosa (gingiva) keratinocytes and fibroblasts...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28814935/knowledge-and-attitude-of-dental-students-towards-hiv-aids-patients-in-melaka-malaysia
#4
Vijendra Pal Singh, Izni Syazana Osman, Nur Amanina Rahmat, Nur Ashikin Abu Bakar, Nurul Fathin Natasha Abdul Razak, Sowmya Nettem
BACKGROUND: Cross contamination of HIV is a real threat today. Dental treatment often includes direct contact with a patient's blood and saliva, therefore dental professionals can be easily exposed to HIV microorganisms. Hence, it is essential to gain insight into dental students' knowledge and attitude towards HIV patients. METHOD: A cross-sectional survey of 186 clinical year dental students (year 3, 4 and 5) in the 2015-2016 academic session at the Faculty of Dentistry, Melaka-Manipal Medical College (MMMC), Manipal University, Melaka volunteered to participate in the study...
May 2017: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28814903/ixeris-dentata-extract-regulates-salivary-secretion-through-the-activation-of-aquaporin-5-and-prevents-diabetes-induced-xerostomia
#5
Kashi Raj Bhattarai, Sang-Won Lee, Seung Hyun Kim, Hyung-Ryong Kim, Han-Jung Chae
The aim of this study was to investigate the effects of Ixeris dentata (IXD) extract to improve the salivation rate in dry mouth induced by diabetes. Both control and diabetic rats were treated with a sublingual spray of either water or IXD extract to determine the effects of IXD on salivation. During the study, we observed that IXD extract treatment increased the salivary flow rate in diabetic rats. The expression of α-amylase was increased significantly in both saliva and glandular tissue lysates of IXD-treated diabetic rats...
2017: Journal of Experimental Pharmacology
https://www.readbyqxmd.com/read/28814859/inhibitory-effect-of-zirconium-oxide-nanoparticles-on-candida-albicans-adhesion-to-repaired-polymethyl-methacrylate-denture-bases-and-interim-removable-prostheses-a-new-approach-for-denture-stomatitis-prevention
#6
Mohammed M Gad, Ahmad M Al-Thobity, Suliman Y Shahin, Badar T Alsaqer, Aiman A Ali
BACKGROUND: Despite drawbacks, cold-cured acrylic resin is still the most common material used in denture repair. Zirconia nanoparticles were among the reinforcements added to increase the strength of the resin. The effect on Candida due to the addition of zirconia nanoparticles to the resin has not been investigated. PURPOSE: The aim of this study was to evaluate the effect of zirconia nanoparticles added to cold-cured acrylic resin on Candida albicans adhesion...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28814367/relationship-between-salivary-cortisol-levels-and-children-s-behavior-during-a-dental-examination
#7
Wanessa Botega Curcio, Lucas Guimarães Abreu, Camila Faria Carrada, Flávia Almeida Ribeiro Scalioni, Rosangela Almeida Ribeiro
PURPOSE: To correlate the salivary cortisol levels in children attending a university dental clinic with their behavior during the dental appointment. METHODS: A prospective study was conducted with 43 seven- to 10-year-old children whose behavior during the dental appointment was assessed using the Frankl scale. Participants were divided into two groups: (1) cooperative children; and (2) uncooperative children. All children had four saliva samples collected as follows: prior to the dental examination (S1); shortly after the dental examination (S2); 30 minutes after waking up in the morning after the day of the appointment (S3); and in the afternoon, 24 hours after the dental appointment (S4)...
May 15, 2017: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28813487/effect-of-masticatory-stimulation-on-the-quantity-and-quality-of-saliva-and-the-salivary-metabolomic-profile
#8
Nobuyuki Okuma, Makiko Saita, Noriyuki Hoshi, Tomoyoshi Soga, Masaru Tomita, Masahiro Sugimoto, Katsuhiko Kimoto
BACKGROUND: This study characterized the changes in quality and quantity of saliva, and changes in the salivary metabolomic profile, to understand the effects of masticatory stimulation. METHODS: Stimulated and unstimulated saliva samples were collected from 55 subjects and salivary hydrophilic metabolites were comprehensively quantified using capillary electrophoresis-time-of-flight mass spectrometry. RESULTS: In total, 137 metabolites were identified and quantified...
2017: PloS One
https://www.readbyqxmd.com/read/28813252/oxytocin-a-parenting-hormone
#9
REVIEW
Ruth Feldman, Marian J Bakermans-Kranenburg
In non-human mammals mothering is hormone-dependent, with crucial roles for oxytocin and prolactin. While human parenting is not hormone-dependent, hormonal changes in oxytocin, vasopressin, prolactin, testosterone, and cortisol prime and accompany the expression of parenting. In the following we focus on oxytocin (OT) as a key hormone in human parenting. OT is a nine-amino-acid neuropeptide hormone which evolved from the ancient vasotocin molecule approximately 650 MYO. OT is implicated in sociality across vertebrate evolution and substantial research has pinpointed its role in birth, lactation, and maternal care in mammals...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28812980/application-of-an-in-vitro-digestion-model-for-210po-bioaccessibility-assessment-in-seafood
#10
Carla Roselli, Donatella Desideri, Laura Feduzi, Lucia Ugolini, Maria Assunta Meli
This study aims to investigate the bioaccessibility of 210Po in seafood and the impact of food preparation on this radionuclide. Polonium bioaccessibility is the fraction of 210Po mobilized from food matrices into digestive extractants when applying an in vitro digestion model. The degree of bioaccessibility of 210Po in food has important implications for estimating ingestion doses from this radionuclide. The simulation of gastrointestinal digestion was divided into three stages through the use of synthetic saliva, gastric and bile-pancreas solutions...
August 16, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28812969/functional-expression-of-bmp7-receptors-in-oral-epithelial-cells-interleukin-17f-production-in-response-to-bmp7
#11
Kensuke Nishio, Yasumasa Ozawa, Hisanori Ito, Takashi Kifune, Tatsuya Narita, Toshimitsu Iinuma, Nobuhito Gionhaku, Masatake Asano
BACKGROUND: Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-β (TGF-β) superfamily. Recently, BMP7 has been demonstrated to be produced by salivary glands and contribute to embryonic branching in mice. The BMP7 in saliva is thought to be delivered to the oral cavity and is expected to contact with stratified squamous epithelial cells which line the surface of oral mucosa. In this study, we attempted to investigate the effects of BMP7 on oral epithelial cells...
October 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28812221/multimodal-neuroimaging-in-schizophrenia-description-and-dissemination
#12
C J Aine, H J Bockholt, J R Bustillo, J M Cañive, A Caprihan, C Gasparovic, F M Hanlon, J M Houck, R E Jung, J Lauriello, J Liu, A R Mayer, N I Perrone-Bizzozero, S Posse, J M Stephen, J A Turner, V P Clark, Vince D Calhoun
In this paper we describe an open-access collection of multimodal neuroimaging data in schizophrenia for release to the community. Data were acquired from approximately 100 patients with schizophrenia and 100 age-matched controls during rest as well as several task activation paradigms targeting a hierarchy of cognitive constructs. Neuroimaging data include structural MRI, functional MRI, diffusion MRI, MR spectroscopic imaging, and magnetoencephalography. For three of the hypothesis-driven projects, task activation paradigms were acquired on subsets of ~200 volunteers which examined a range of sensory and cognitive processes (e...
August 15, 2017: Neuroinformatics
https://www.readbyqxmd.com/read/28811937/association-between-salivary-leptin-levels-and-taste-perception-in-children
#13
Lénia Rodrigues, Rosa Espanca, Ana Rodrigues Costa, Célia Miguel Antunes, Clarinda Pomar, Fernando Capela-Silva, Cristina Conceição Pinheiro, Francisco Amado, Elsa Lamy
The satiety inducing hormone leptin acts not only at central nervous system but also at peripheral level. Leptin receptors are found in several sense related organs, including the mouth. A role of leptin in sweet taste response has been suggested but, until now, studies have been based on in vitro experiments, or in assessing the levels of the hormone in circulation. The present study investigated whether the levels of leptin in saliva are related to taste perception in children and whether Body Mass Index (BMI) affects such relationship...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28811748/salivary-diagnostic-markers-in-males-and-females-during-rest-and-exercise
#14
Kay Rutherfurd-Markwick, Carlene Starck, Deborah K Dulson, Ajmol Ali
BACKGROUND: Saliva is a useful diagnostic tool for analysis in sports, exercise and nutrition research, as collection is easy and non-invasive and it contains a large number of analytes affected by a range of physiological and pathological stressors and conditions. This study examined key salivary electrolytes and stress and immune markers in males and females at rest and during exercise. METHODS: Unstimulated whole saliva from 20 healthy, recreationally active participants (8 males and 12 females) was analysed for flow rate, osmolality, sodium (Na(+)), potassium (K(+)), chloride (Cl(-)), secretory immunoglobulin A (SIgA), α-amylase activity and cortisol during both rest and moderate intensity (70% peak power) cycling exercise in a randomised crossover design...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28811549/diagnosing-peri-implant-disease-using-the-tongue-as-a-24-7-detector
#15
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/28811296/a-novel-d2o-tracer-method-to-quantify-rna-turnover-as-a-biomarker-of-de-novo-ribosomal-biogenesis-in-vitro-in-animal-models-and-in-human-skeletal-muscle
#16
Matthew S Brook, Daniel J Wilkinson, W Kyle Mitchell, Jonathan L Lund, Bethan E Phillips, Nathaniel J Sweczyk, Heikki Kainulainen, Sanna Lensu, Lauren G Koch, Steve L Britton, Paul L Greenhaff, Kenneth Smith, Philip J Atherton
Current methods to quantify RNA dynamics are beset with limitations. Here, we developed a novel stable isotope (D2O)-methodology to quantify RNA synthesis (i.e. ribosomal biogenesis) in cells, animal models, and humans. Firstly, proliferating C2C12 cells were incubated in D2O-enriched media and myotubes (±) 50ng.ml(-1) IGF-1. Secondly, rat quadriceps [untrained n=9; 7-wks interval-"like" training n=13] were collected after ~3-wks D2O (70-Atom%) administration, with body-water enrichment (BWE) monitored via blood sampling...
August 15, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28811190/how-to-quench-your-thirst-the-effect-of-water-based-products-varying-in-temperature-and-texture-flavour-and-sugar-content-on-thirst
#17
L van Belzen, E M Postma, S Boesveldt
The sensation of thirst plays an important role in the consumption of water or other fluids to rehydrate the body in order to keep bodily functions working properly. An increase in saliva secretion, wetting the mouth by ingestion of liquids, and cooling and sour components in products can alleviate this sensation already before absorption of fluids by the body. This study aimed to investigate the thirst-quenching ability of water-based products differing in temperature and texture (cold solids and cool liquids), flavour (flavoured and non-flavoured) and sugar content in two consecutive experiments...
August 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28811117/bilayered-buccal-films-as-child-appropriate-dosage-form-for-systemic-administration-of-propranolol
#18
Angela Abruzzo, Fiore Pasquale Nicoletta, Francesco Dalena, Teresa Cerchiara, Barbara Luppi, Federica Bigucci
Buccal mucosa has emerged as an attractive site for systemic administration of drug in paediatric patients. This route is simple and non-invasive, even if the saliva wash-out effect and the relative permeability of the mucosa can reduce drug absorption. Mucoadhesive polymers represent a common employed strategy to increase the contact time of the formulation at the application site and to improve drug absorption. Among the different mucoadhesive dosage forms, buccal films are particularly addressed for paediatric population since they are thin, adaptable to the mucosal surface and able to offer an exact and flexible dose...
August 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28810984/impact-of-a-7-day-field-training-on-oral-health-condition-in-japan-ground-self-defense-force-personnel
#19
Koji Yamashita, Takeshi Nishiyama, Emi Nagata, Atik Ramadhani, Miki Kawada-Matsuo, Hitoshi Komatsuzawa, Takahiko Oho
INTRODUCTION: In the Japan Ground Self-Defense Force (JGSDF), personnel periodically perform intensive training that mimics the conditions seen in battle and during natural disasters. Military training involves intensive, stressful conditions, and changes in immune responses have been found in personnel following training. Good oral condition is important for military personnel to fulfill their duties; however, they have difficulty performing daily oral care under training conditions...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810685/characterising-the-exposure-of-prison-staff-to-second-hand-tobacco-smoke
#20
Sean Semple, Helen Sweeting, Evangelia Demou, Greig Logan, Rachel O'Donnell, Kate Hunt
Second-hand tobacco smoke (SHS) is an avoidable and harmful exposure in the workplace but >25000 prison staff continue to be exposed on a daily basis in the UK and many more worldwide. SHS exposures in prisons are incompletely understood but may be considerable given the large proportion of smoking prisoners and limited ventilation. This study characterized the exposure of prison staff to SHS in all 15 prisons in Scotland using multiple methods. Exposure assessment strategies included 6-day area measurement of fine Particulate Matter (PM2...
August 1, 2017: Annals of Work Exposures and Health
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