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https://www.readbyqxmd.com/read/28210452/ewing-sarcoma-of-the-oral-cavity-a-review
#1
REVIEW
Maria Margaix-Muñoz, José Bagán, Rafael Poveda-Roda
OBJECTIVES: A review is made of the clinical, diagnostic, therapeutic and survival characteristics of Ewing sarcoma (ES) of the oral cavity. MATERIAL AND METHODS: A systematic literature search was carried out, with restrictions referred to time (1960-2014), language (English and Spanish) and type of study (case reports, letters, datasets, reviews). The following MeSH terms and boolean operators were used: Ewing AND Sarcoma AND [tongue, jaw, maxilla, cheek, condyle OR temporomandibular, floor AND mouth, gum OR gingiva, palate OR palatal, lip, uvula, head AND neck]...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28209191/knowledge-of-caries-risk-factors-indicators-among-japanese-and-irish-adult-patients-with-different-socio-economic-profiles-a-cross-sectional-study
#2
Makiko Nishi, Máiréad Harding, Virginia Kelleher, Helen Whelton, Finbarr Allen
BACKGROUND: A previous study has shown deficient knowledge of caries risk factors/indicators in a Japanese adult population regarded to have a high interest in preventive dentistry. No prior research has investigated caries risk knowledge in an Irish adult population. We hypothesise there may be unexpected differences or similarities in knowledge across countries with similar levels of economic development when comparing groups with different socio-economic and cultural profiles. Understanding what influences knowledge is important for the development of effective and efficient caries prevention strategies...
February 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28199326/a-mathematical-model-of-calcium-dynamics-in-hsy-cells
#3
Jung Min Han, Akihiko Tanimura, Vivien Kirk, James Sneyd
Saliva is an essential part of activities such as speaking, masticating and swallowing. Enzymes in salivary fluid protect teeth and gums from infectious diseases, and also initiate the digestion process. Intracellular calcium (Ca2+) plays a critical role in saliva secretion and regulation. Experimental measurements of Ca2+ and inositol trisphosphate (IP3) concentrations in HSY cells, a human salivary duct cell line, show that when the cells are stimulated with adenosine triphosphate (ATP) or carbachol (CCh), they exhibit coupled oscillations with Ca2+ spike peaks preceding IP3 spike peaks...
February 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28196869/structural-insights-unravel-the-zymogenic-mechanism-of-the-virulence-factor-gingipain-k-from-porphyromonas-gingivalis-a-causative-agent-of-gum-disease-from-the-human-oral-microbiome
#4
Anja Pomowski, Isabel Uson, Zuzanna M Nowakowska, Florian Veillard, Maryta N Sztukowska, Tibisay Guevara, Theodoros Goulas, Danuta Mizgalska, Magdalena L Nowak, Barbara A Potempa, James A Huntington, Jan Potempa, F Xavier Gomis-Ruth
Skewing of the human oral microbiome causes dysbiosis and preponderance of bacteria such as Porphyromonas gingivalis, the main etiological agent of periodontitis. P. gingivalis secretes proteolytic gingipains (Kgp and RgpA/B) as zymogens inhibited by a pro-domain that is removed during extracellular activation. Unraveling the molecular mechanism of Kgp zymogenicity is essential to design inhibitors blocking its activity. Here, we found that the isolated 209-residue Kgp pro-domain is a boomerang-shaped all-β protein similar to the RgpB pro-domain...
February 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28180007/characteristics-of-cellular-composition-of-periodontal-pockets
#5
REVIEW
Petro Hasiuk, Nataliya Hasiuk, Dmytro Kindiy, Victoriya Ivanchyshyn, Dmytro Kalashnikov, Sergiy Zubchenko
PURPOSE: The development of inflammatory periodontal disease in young people is an urgent problem of today's periodontology, and requires a development of new methods that would give an opportunity not only to diagnose but also for prognosis of periodontitis course in a given patients contingent. RESULTS: Cellular structure of periodontal pockets is presented by hematogenous and epithelial cells. Our results are confirmed by previous studies, and show that the penetration of periodontal pathogens leads to formation in periodontal tissue of a highly active complex compounds-cytokines that are able to modify the activity of neutrophils and reduce their specific antibacterial properties...
December 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28177110/oral-health-status-knowledge-and-practice-among-pregnant-women-attending-omdurman-maternity-hospital-sudan
#6
H M El-Mahdi Ibrahim, A M Mudawi, I A Ghandour
Good oral health is important in pregnancy but little is known about the oral health and knowledge and practices of pregnant Sudanese women. This cross-sectional study was conducted to address this gap. A sample of 420 pregnant women attending the prenatal clinic at Omdurman maternity hospital were interviewed and examined for caries and periodontal disease. The mean age of the women was 27.1 (SD 5.8) years, 52.4% had > primary school education and 7.1% were employed. Only 12% had a high level of oral health knowledge and 21...
February 1, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/28144851/application-of-diverse-natural-polymers-in-the-design-of-oral-gels-for-the-treatment-of-periodontal-diseases
#7
Auleep Ganguly, Cheng Kang Ian, Ravi Sheshala, Priyadarshi Soumyaranjan Sahu, Haider Al-Waeli, Venkata Srikanth Meka
The objective of this study was to prepare periodontal gels using natural polymers such as badam gum, karaya gum and chitosan. These gels were tested for their physical and biochemical properties and assessed for their antibacterial activity against Aggregatibacter actinomycetemcomitans and Streptococcus mutans, two pathogens associated with periodontal disease. Badam gum, karaya gum and chitosan were used to prepare gels of varying concentrations. Moxifloxacin hydrochloride, a known antimicrobial drug was choosen in the present study and it was added to the above gels...
March 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28129034/alkyl-polyglycoside-a-highly-promising-adjuvant-in-intranasal-split-influenza-vaccines
#8
Hui Wu, Yuanyuan Bao, Xiang Wang, Dongming Zhou, Wenzhe Wu
Influenza viral infections are significant global public health concerns due to the morbidity and mortality associated with acute respiratory disease, secondary complications, and pandemic threats; thus, continuous efforts have been made to develop potent influenza vaccines. In this study, three different mucosal adjuvants-alkyl polyglycoside (APG), gellan gum, and chitosan (CS)-were evaluated for their efficacy in intranasal A/H1N1 or B split influenza vaccines administered to BALB/c mice. Protective immunity was monitored by serum analysis for IgG, hemagglutination inhibition (HI), and neutralizing antibody levels, as well as mucosal IgA levels in nasal and pulmonary lavage fluids...
January 27, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28092925/risk-based-management-of-dental-procedures-in-patients-with-inherited-bleeding-disorders-development-of-a-dental-bleeding-risk-assessment-and-treatment-tool-debratt
#9
L Rasaratnam, P Chowdary, D Pollard, B Subel, C Harrington, U R Darbar
INTRODUCTION: Successful outcomes in dental management for patients with inherited bleeding disorders require close collaboration between haematology teams and dentists. AIM: To review outcomes of an interdisciplinary pathway for dental procedures by assessing adequacy and appropriateness of haemostatic management. METHODS: Two hundred dental procedures in 30 patients with inherited bleeding disorders were included. A Dental Bleeding Risk Assessment and Treatment Tool (DeBRATT) was developed to identify four categories of bleeding risk (no risk, low, moderate and high risk of bleeding) in relation to the severity of the bleeding disorder and the invasiveness of dental procedure...
January 16, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28089334/masticatory-function-and-oral-health-related-quality-of-life-in%C3%A2-patients-after-partial-maxillectomies-with-closed-or%C3%A2-open%C3%A2-defects
#10
Mohamed M Said, Takafumi Otomaru, Yesiboli Yeerken, Hisashi Taniguchi
STATEMENT OF PROBLEM: The healing pattern after surgical resection of tumors of the oral cavity involving the maxilla may vary from one patient to another. The result may be open communication between the oral and nasal cavities (open defect) or complete oronasal separation after healing of the defect area (closed defect). PURPOSE: The purpose of this clinical study was to compare masticatory function and oral health-related quality of life (OHRQoL) between patients with closed and open defects who had undergone a partial maxillectomy and were wearing dentomaxillary prostheses...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28072887/dengue-fever-in-travellers-and-risk-of-local-spreading-case-reports-from-southern-italy-and-literature-update
#11
Claudia Fabrizio, Luciana Lepore, Maria Chironna, Gioacchino Angarano, Annalisa Saracino
Dengue fever (DF), an arbovirosis caused by Dengue viruses (DV, serotypes 1-4), is responsible for an increasing number of travel-related acute febrile illnesses due to population growth, climate changes, spreading by viremic travellers, and improved laboratory diagnosis. The presence of efficient vectors (mosquito Aedes albopictus) has also been described in temperate regions including Italy which is considered the most heavily infected European country. Normally characterized by non-specific signs and symptoms, DF incidence is probably underestimated, especially in non-endemic countries, but the risk of severe forms is substantial...
January 2017: New Microbiologica
https://www.readbyqxmd.com/read/28072691/the-effectiveness-and-safety-of-dual-antiplatelet-therapy-in-ischemic-cerebrovascular-disease-with-intracranial-and-extracranial-arteriostenosis-in-chinese-patients-a-randomized-and-controlled-trail
#12
RANDOMIZED CONTROLLED TRIAL
Feng-Tong Zuo, Hui Liu, Hui-Jun Wu, Na Su, Jie-Qiong Liu, Ai-Qin Dong
BACKGROUND: There are limited data on the effect of dual antiplatelet treatment with clopidogrel plus aspirin in patients with ischemic cerebrovascular disease and intracranial and extracranial arteriostenosis. The aim of our study was to evaluate the efficacy and safety of aspirin plus clopidogrel in the treatment of ischemic cerebrovascular disease with intracranial and extracranial arteriostenosis. METHODS: Patients with clinically evident acute cerebral infarction or transient ischemic attack combined with intracranial and extracranial arteriostenosis (greater than 50%) who were unsuitable or reluctance to perform stent implantation were enrolled in this study...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28011615/impact-and-cost-effectiveness-of-selective-human-papillomavirus-vaccination-of-men-who-have-sex-with-men
#13
Allen Lin, Koh J Ong, Peter Hobbelen, Eleanor King, David Mesher, W John Edmunds, Pam Sonnenberg, Richard Gilson, Irenjeet Bains, Yoon H Choi, Clare Tanton, Kate Soldan, Mark Jit
BACKGROUND: Men who have sex with men (MSM) have a high lifetime risk of anogenital warts and cancers related to infection with human papillomavirus (HPV). They also benefit less from herd protection than heterosexual males in settings with female-only HPV vaccination. METHODS: We evaluated the potential health impact and cost-effectiveness of offering vaccination to MSM who visit genito-urinary medicine clinics. We used a mathematical model of HPV 6/11/16/18 sexual transmission within an MSM population in England, parameterised with sexual behaviour, GUM attendance, HPV prevalence, HIV prevalence, warts and cancer incidence data...
December 23, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28010157/evaluation-of-immune-response-in-challenged-chickens-vaccinated-with-newcastle-disease-vaccine-using-gums-from-cedrela-odorata-and-khaya-senegalensis-as-delivery-agents
#14
V O Oyebanji, B O Emikpe, Omolade A Oladele, M O Odeniyi, A Salami, O I Osowole, O B Kasali, O A Akinboade
Immune response of challenged chickens following previous vaccinations with Newcastle disease vaccine using gums from Cedrela odorata and Khaya senegalensis as delivery agent were evaluated. Two hundred and fifty-two (252) one-day old chickens were divided into vaccine-gum oral (GVOR), vaccine-gum ocular (GVOC), vaccine oral (VOR), vaccine ocular (VOC), gum oral (GOR), gum ocular (GOC), No-gum-no-vaccine/challenged (NGNV/C) & No-gum-no-vaccine/unchallenged (NGNV/U) groups. They were vaccinated at days 21 & 42 and challenged at day 84...
December 23, 2016: Journal of Immunoassay & Immunochemistry
https://www.readbyqxmd.com/read/28008227/transbuccal-delivery-of-betahistine-dihydrochloride-from-mucoadhesive-tablets-with-a-unidirectional-drug-flow-in-vitro-ex-vivo-and-in-vivo-evaluation
#15
Mohamed A El-Nabarawi, Adel A Ali, Heba M Aboud, Amira H Hassan, Amany H Godah
OBJECTIVE: Betahistine dihydrochloride (BH.2HCl), an anti-vertigo histamine analog used in the treatment of Ménière's disease, undergoes extensive first-pass metabolism and suffers from short biological half-life. The aim of the present work was to develop and estimate controlled release mucoadhesive buccal tablets of BH.2HCl with a unidirectional drug flow to overcome this encumbrance. METHODS: A direct compression method was adopted for preparation of the tablets using mucoadhesive polymers like guar gum, hydroxypropyl methyl cellulose K4M, sodium carboxymethyl cellulose and their combinations...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28005268/health-information-quality-of-websites-on-periodontology
#16
Isabella Bizzi, Pietro Ghezzi, Priyamvada Paudyal
AIM: This study aimed to assess the quality of the information available on the Web on gum disease. METHODS: The term "gum disease" was searched in Google and in MedlinePlus. The first 200 websites were analysed by the Journal of the American Medical Association (JAMA) criteria and the Health On the Net Foundation (HONCode) certification, instruments for assessing quality of health information. Data were analysed the Mann-Whitney test or Kruskal-Wallis test, followed by the Dunn's test, using the GraphPad Prism Software version 6...
December 22, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27981377/myrrh-exerts-barrier-stabilising-and-protective-effects-in-ht-29-b6-and-caco-2-intestinal-epithelial-cells
#17
Rita Rosenthal, Julia Luettig, Nina A Hering, Susanne M Krug, Uwe Albrecht, Michael Fromm, Jörg-Dieter Schulzke
PURPOSE: Myrrh, the oleo-gum resin of Commiphora molmol, is well known for its anti-inflammatory properties. In different animal models, it protected against DSS-, TNBS- and oxazolone-induced colitis. To date, no information concerning the effect of myrrh on barrier properties are available. Thus, this study investigates the effect of myrrh on paracellular barrier function in the absence or presence of the pro-inflammatory cytokine TNFα. METHODS: Monolayers of human colon cell lines HT-29/B6 and Caco-2 were incubated with myrrh under control conditions or after challenge with the pro-inflammatory cytokine TNFα...
December 15, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27973608/microbial-community-composition-impacts-pathogen-iron-availability-during-polymicrobial-infection
#18
Apollo Stacy, Nader Abraham, Peter Jorth, Marvin Whiteley
Iron is an essential nutrient for bacterial pathogenesis, but in the host, iron is tightly sequestered, limiting its availability for bacterial growth. Although this is an important arm of host immunity, most studies examine how bacteria respond to iron restriction in laboratory rather than host settings, where the microbiome can potentially alter pathogen strategies for acquiring iron. One of the most important transcriptional regulators controlling bacterial iron homeostasis is Fur. Here we used a combination of RNA-seq and chromatin immunoprecipitation (ChIP)-seq to characterize the iron-restricted and Fur regulons of the biofilm-forming opportunistic pathogen Aggregatibacter actinomycetemcomitans...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27934807/transmission-of-mutans-streptococci-in-mother-child-pairs
#19
S G Damle, Renu Yadav, Shalini Garg, Abhishek Dhindsa, Vikas Beniwal, Ashish Loomba, Shailja Chatterjee
BACKGROUND & OBJECTIVES: Dental caries is an infectious, transmissible disease. Maternal transfer of mutans streptococci (MS) has been a subject of research. The aim of this study was to evaluate the transmission of MS from mother to children through genetic analysis. METHODS: Thirty mother-child pairs were included and divided into three groups according to the age of the children. Saliva samples were collected and MS colonies from each mother-child pair were isolated...
August 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/27924596/methods-to-study-antagonistic-activities-among-oral-bacteria
#20
Fengxia Qi, Jens Kreth
Most bacteria in nature exist in multispecies communities known as biofilms. In the natural habitat where resources (nutrient, space, etc.) are usually limited, individual species must compete or collaborate with other neighboring species in order to perpetuate in the multispecies community. The human oral cavity is colonized by >700 microbial species known as the indigenous microbiota. This indigenous flora normally maintains an ecological balance through antagonistic as well as mutualistic interspecies interactions...
2017: Methods in Molecular Biology
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