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https://www.readbyqxmd.com/read/28445526/biosynthesis-of-the-oxygenated-diterpene-nezukol-in-the-medicinal-plant-isodon-rubescens-is-catalyzed-by-a-pair-of-diterpene-synthases
#1
Kyle A Pelot, David M Hagelthorn, J Bennett Addison, Philipp Zerbe
Plants produce an immense diversity of natural products (i.e. secondary or specialized metabolites) that offer a rich source of known and potentially new pharmaceuticals and other desirable bioproducts. The Traditional Chinese Medicinal plant Isodon rubescens (Lamiaceae) contains an array of bioactive labdane-related diterpenoid natural products. Of these, the ent-kauranoid oridonin is the most prominent specialized metabolite that has been extensively studied for its potent antimicrobial and anticancer efficacy...
2017: PloS One
https://www.readbyqxmd.com/read/28443880/asymmetric-synthesis-of-ent-fragransin-c1
#2
Santikorn Chaimanee, Manat Pohmakotr, Chutima Kuhakarn, Vichai Reutrakul, Darunee Soorukram
The first asymmetric synthesis of ent-fragransin C1 was reported. The key step involves an intramolecular C-O bond formation (furan ring formation) via chemoselective generation of the benzylic carbocation leading to the 2,3-anti-3,4-syn-4,5-anti-tetrahydrofuran moiety as a single diastereomer in good yield. Our synthesis confirms that ent-fragransin C1 possesses 2R,3R,4S,5S configurations.
April 26, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28442409/sinonasal-mucosal-melanoma-a-44-case-study-and-literature-analysis
#3
M Dréno, M Georges, F Espitalier, C Ferron, A Charnolé, B Dréno, O Malard
OBJECTIVES: Sinonasal mucosal melanoma is a rare disease, representing 4% of nasal cavity and paranasal sinus malignancies. The aim of this study was to assess the clinical characteristics, progression and treatment of this disease and to identify prognostic factors. MATERIAL AND METHODS: This retrospective review presents a cohort of 44 patients treated for a melanoma arising from the nasal cavity and paranasal sinuses, in the ENT Head and Neck Surgery Department of the University Hospital of Nantes (France) between 1988 and 2015...
April 22, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28441001/-mexican-asthma-guidelines-guima-2017
#4
Désirée Larenas-Linnemann, Jorge Salas-Hernández, Juan Carlos Vázquez-García, Ignacio Ortiz-Aldana, Margarita Fernández-Vega, Blanca Estela Del Río-Navarro, María Del Carmen Cano-Salas, Jorge Agustín Luna-Pech, José Antonio Ortega-Martell, Jade Romero-Lombard, Erika Del Carmen López-Estrada, Jimena Villaverde-Rosas, José Luis Mayorga-Butrón, Mario Humberto Vargas-Becerra, Martín Bedolla-Barajas, Noel Rodríguez-Pérez, Ambrocio Aguilar-Aranda, Carlos Adrián Jiménez-González, Carlos García-Bolaños, Claudia Garrido-Galindo, David Alejandro Mendoza-Hernández, Enrique Mendoza-López, Gerardo López-Pérez, Guillermo Hideo Wakida-Kuzonoki, Héctor Hernán Ruiz-Gutiérrez, Héctor León-Molina, Héctor Martínez-De la Lanza, Héctor Stone-Aguilar, Javier Gómez-Vera, Jorge Olvera-Salinas, José Joel Oyoqui-Flores, José Luis Gálvez-Romero, José Santos Lozano-Sáenz, Juan Ignacio Salgado-Gama, Marcos Alejandro Jiménez-Chobillon, Martha Angélica García-Avilés, Martha Patricia Guinto-Balanzar, Miguel Alejandro Medina-Ávalos, Robert Camargo-Angeles, Rogelio García-Torrentera, Saraí Toral-Freyre, Gabriel Montes-Narváez, Héctor Solorio-Gómez, Juan Rosas-Peña, Sergio Jesús Romero-Tapia, Adela Reyes-Herrera, Francisco Cuevas-Schacht, Joaquín Esquer-Flores, José Antonio Sacre-Hazouri, Lorenzo Compean-Martínez, Pablo Julián Medina-Sánchez, Sergio Garza-Salinas, Carlos Báez-Loyola, Iraís Romero-Alvarado, José Luis Miguel-Reyes, Laura Elizabeth Huerta-Espinosa, Manuel Ángel Correa-Flores, Ricardo Castro-Martínez
BACKGROUND: The need for a national guideline, with a broad basis among specialists and primary care physicians was felt in Mexico, to try unifying asthma management. As several high-quality asthma guidelines exist worldwide, it was decided to select the best three for transculturation. METHODS: Following the internationally recommended methodology for guideline transculturation, ADAPTE, a literature search for asthma guidelines, published 1-1-2007 through 31-12-2015 was conducted...
2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/28440088/head-and-neck-giant-cell-arteritis-an-autoimmune-disease-with-many-faces
#5
Markus Wirth, Lucas Schirmer, Benedikt Hofauer, Magdalena Lenschow, Daria Loos, Klaus Thuermel, Andreas Knopf
CONCLUSION: A high rate of infrequent presentations of giant cell arteritis were seen in the ENT department and should be anticipated as a differential diagnosis in every older patient with odynophagia with high CRP values without cause in thorough ENT examination. OBJECTIVE: To describe the clinical manifestation of head and neck giant cell arteritis and to derive a diagnostic pathway covering atypical cases. METHOD: Single-center, retrospective analysis of cases with GCA in the head and neck region (HN-GCA) (2002-2012) to describe the clinical presentation and to derive a diagnostic pathway covering manifestations presenting to an ENT department...
April 25, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28439693/hyperplasia-and-the-degree-and-activity-of-inflammation-in-chronic-recurrent-tonsillitis-a-histopathological-study
#6
Jan Wittlinger, Petar Stankovic, Ulrike Girrbach, Tanja Gradistanac, Christian Güldner, Afshin Teymoortash, Stephan Hoch, Thomas Günzel, Thomas Wilhelm
Postoperative haemorrhage following tonsillectomy occurs in 5.98% of all cases with up to 10 deaths reported annually in Germany. When comparing tonsillectomy (TE) and tonsillotomy (TT), the same long-term frequency of ENT infections is displayed in children and young adults. However, taking postoperative haemorrhaging into account, TT is more favourable. Chronic tonsillitis is one of the most common indications for TE in the adult population; however, a histopathological characterization may reveal objective criteria and provide a foundation for routinely performing TT in adults too...
April 24, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28439206/is-operavox-a-clinically-useful-tool-for-the-assessment-of-voice-in-a-general-ent-clinic
#7
Richard Teck Kee Siau, Jay Goswamy, Sue Jones, Sadie Khwaja
BACKGROUND: Objective acoustic analysis is a key component of multidimensional voice assessment. OperaVOX is an iOS app which has been shown to be comparable to Multi Dimensional Voice Program for most principal measures of vocal function. As a relatively cheap, portable and easily accessible form of acoustic analysis, OperaVOX may be more clinically useful than laboratory-based software in many situations. This study aims to determine whether correlation exists between acoustic measurements obtained using OperaVOX, and perceptual evaluation of voice...
2017: BMC Ear, Nose, and Throat Disorders
https://www.readbyqxmd.com/read/28436701/two-cytotoxic-6-7-seco-spiro-lacton-ent-kauranoids-from-isodon-rubescens
#8
Guo-Yong Luo, Rui Deng, Jing-Jie Zhang, Jiang-Hai Ye, Lu-Tai Pan
The present study was performed to investigate the chemical components of the branches and leaves of Isodon rubescens. Two 6,7-seco-spiro-lacton-ent-kauranoids were obtained. Based on the extensive spectroscopic analyses, their structures were elucidated as 6-epi-11-O-acetylangustifolin (1) and 11-O-acetylangustifolin (2), respectively. The structure of 2 was further comfirmed by X-ray crystallography analysis. MTT method was employed to evaluate their cytotoxity against human lung cancer cell lines A549 and leukemia cell lines K562...
April 24, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28434154/protective-effects-of-cell-free-supernatant-and-live-lactic-acid-bacteria-isolated-from-thai-pigs-against-a-pandemic-strain-of-porcine-epidemic-diarrhea-virus
#9
Wandee Sirichokchatchawan, Gun Temeeyasen, Dachrit Nilubol, Nuvee Prapasarakul
Porcine epidemic diarrhea virus (PEDV) is a coronavirus which causes severe diarrhea and fatal dehydration in piglets. In general, probiotic supplements could enhance recovery and protect piglets against enteric pathogens. Seven local lactic acid bacteria (LAB), (Ent. faecium 79N and 40N, Lact. plantarum 22F, 25F and 31F, Ped. acidilactici 72N and Ped. pentosaceus 77F) from pig feces were well-characterized as high potential probiotics. Cell-free supernatants (CFS) and live LAB were evaluated for antiviral activities by co-incubation on Vero cells and challenged with a pandemic strain of PEDV isolated from pigs in Thailand...
April 22, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28434016/chronic-rhinosinusitis-and-mood-disturbance
#10
S E Erskine, C Hopkins, A Clark, S Anari, A Robertson, S Sunkaraneni, J A Wilson, J Beezhold, C M Philpott
BACKGROUND: This study is part of the Chronic Rhinosinusitis Epidemiology Study (CRES). The overarching aim is to determine factors that influence the onset and severity of chronic rhinosinusitis (CRS). The aim of this analysis is to determine whether those with CRS are more likely to report psychiatric morbidity and in particular mood disturbance compared with healthy controls. METHODS: CRES consists of a study-specific questionnaire regarding demographic and socioeconomic factors and past medical history as well as a nasal symptom score (SNOT-22) and SF-36 (QoL - quality of life tool)...
April 23, 2017: Rhinology
https://www.readbyqxmd.com/read/28432675/transoral-thyroidectomy-advantages-and-limitations
#11
G Dionigi, R P Tufano, J Russell, H Y Kim, E Piantanida, A Anuwong
In this opinion paper of the Journal of Endocrinological Investigation, leading experts in the field report on their current clinical experience with a novel approach for thyroid gland surgery, namely, "transoral thyroidectomy" (TOT). This feasible and novel surgical procedure does not require visible incisions and is, therefore, a truly scarless surgery. Patients meeting the following criteria can be considered as candidates for TOT: (a) an ultrasonographically (US) estimated thyroid diameter ≤10 cm; (b) US-estimated gland volume ≤45 mL; (c) nodule size ≤50 mm; (d) presence of a benign tumor such as a thyroid cyst or a single- or multi-nodular goiter; (e) Bethesda 3 and/or 4 category and (f) papillary microcarcinoma without the evidence of metastasis...
April 21, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28432145/bacterial-siderophores-hijack-neutrophil-functions
#12
Piu Saha, Beng San Yeoh, Rodrigo A Olvera, Xia Xiao, Vishal Singh, Deepika Awasthi, Bhagawat C Subramanian, Qiuyan Chen, Madhu Dikshit, Yanming Wang, Carole A Parent, Matam Vijay-Kumar
Neutrophils are the primary immune cells that respond to inflammation and combat microbial transgression. To thrive, the bacteria residing in their mammalian host have to withstand the antibactericidal responses of neutrophils. We report that enterobactin (Ent), a catecholate siderophore expressed by Escherichia coli, inhibited PMA-induced generation of reactive oxygen species (ROS) and neutrophil extracellular traps (NETs) in mouse and human neutrophils. Ent also impaired the degranulation of primary granules and inhibited phagocytosis and bactericidal activity of neutrophils, without affecting their migration and chemotaxis...
April 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28429163/antimicrobial-susceptibility-of-bacterial-isolates-from-patients-presenting-with-ear-nose-and-throat-ent-infections-in-the-german-community-healthcare-setting
#13
B Olzowy, M Kresken, M Havel, D Hafner, B Körber-Irrgang
Empiric initial antibiotic therapy of bacterial infections is based primarily upon the susceptibility of the most common causative pathogens. The purpose of this study was to provide susceptibility data on six bacterial species known to cause ear, nose and throat (ENT) infections. A total of 1066 isolates collected during a nationwide laboratory-based surveillance study were analysed. All Streptococcus pyogenes isolates were penicillin (PEN)-susceptible, indicating that natural penicillins can still be recommended as the first-line treatment for group A streptococcal tonsillopharyngitis...
April 20, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28426216/total-syntheses-of-highly-oxidized-ent-kaurenoids-pharicin-a-pharicinin-b-7-o-acetylpseurata-c-and-pseurata-c-a-5-2-cascade-approach
#14
Chi He, Jialei Hu, Yubing Wu, Hanfeng Ding
The unprecedented oxidative dearomatization-induced [5+2] cycloaddition/pinacol-type 1,2-acyl migration cascade efficiently generates a quaternary carbon center and assembles the highly oxygenated bicyclo[3.2.1]octane framework of ent-kaurene diterpenoids. By incorporation of the subsequent retro-aldol/aldol process and singlet oxygen ene reaction, this concise and convergent approach has enabled the first asymmetric total syntheses of pharicin A, pharicinin B, 7-O-acetylpseurata C, and pseurata C.
April 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28422031/the-importance-of-labyrinthine-examination-in-the-prognosis-and-therapy-for-balance-in-spinocerebellar-ataxia
#15
João Henrique Faryniuk, Bianca Simone Zeigelboim, Hélio Afonso Ghizoni Teive, Vinicius Ribas Fo, Paulo Breno Noronha Liberalesso, Jair Mendes Marques
INTRODUCTION: Spinocerebellar ataxias (SCAs) are a heterogeneous group of neurodegenerative diseases that are characterized by the presence of progressive cerebellar ataxia. OBJECTIVE: Identify vestibular disorders and demonstrate the importance of labyrinthine examination in the prognosis and therapy for balance in patients with SCAs. MATERIALS AND METHODS: The study had a retrospective cross-sectional design and evaluated 57 patients, mean age of 41...
April 19, 2017: International Tinnitus Journal
https://www.readbyqxmd.com/read/28421806/diet-and-liver-apoptosis-in-rats-a-particular-metabolic-pathway
#16
Maria Emilia Lopes Monteiro, Analucia Rampazzo Xavier, Vilma Blondet Azeredo
INTRODUCTION: Various studies have indicated an association between modifi cation in dietary macronutrient composition and liver apoptosis. OBJECTIVE: To explain how changes in metabolic pathways associated with a high-protein, high-fat, and low-carbohydrate diet causes liver apoptosis. METHODS: Two groups of rats were compared. An experimental diet group (n = 8) using a high-protein (59.46%), high-fat (31.77%), and low-carbohydrate (8.77%) diet versus a control one (n = 9) with American Institute of Nutrition (AIN)-93-M diet...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421777/quality-control-of-enteral-nutrition-therapy-in-cancer-patients-at-nutritional-risk
#17
Ariana Lee, Ronaldo Sousa Oliveira Filho, Thais De Campos Cardenas, Gislaine Aparecida Ozório, Juliana Pereira Lima Gropp, Dan Linetzky Waitzberg
INTRODUCTION: Quality indicators in nutritional therapy (QINTs) allow for the practical assessment of quality in the management of enteral nutrition therapy (ENT) among hospitalized patients. OBJECTIVE: To control ENT quality in cancer patients at nutritional risk. METHODS: A prospective, observational study was performed with cancer patients over 19 years of age who had undergone exclusive ENT for at least 72 h. Nutritional Risk Screening was used to assess nutritional risk; in the presence of nutritional risk, the Subjective Global Assessment (SGA) was used...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421169/high-prevalence-of-virulence-genes-in-specific-genotypes-of-atypical-enteropathogenic-escherichia-coli
#18
Yanmei Xu, Xiangning Bai, Yujuan Jin, Bin Hu, Hong Wang, Hui Sun, Ruyue Fan, Shanshan Fu, Yanwen Xiong
Atypical enteropathogenic Escherichia coli (aEPEC) strains are emerging enteropathogens that have been detected worldwide. A collection of 228 aEPEC strains (121 from diarrheal patients, 27 from healthy carriers, 47 from animals and 33 from raw meats) were investigated for serotypes, virulence gene profiles and phylogenetic relationships. Sixty-six O serogroups were identified. Serogroup O51 was the most prevalent, followed by O119, O26 and O76. For the 20 virulence genes detected, statistically significant differences were observed in the overall prevalence of efa1 (lifA), nleB, nleE, set/ent, paa, and ehxA genes among strains from diarrheal patients, healthy carriers, animals and raw meats, respectively...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28419129/factors-related-to-axial-length-elongation-and-myopia-progression-in-orthokeratology-practice
#19
Bingjie Wang, Rajeev K Naidu, Xiaomei Qu
PURPOSE: To investigate which baseline factors are predictive for axial length growth over an average period of 2.5 years in a group of children wearing orthokeratology (OK) contact lenses. METHODS: In this retrospective study, the clinical records of 249 new OK wearers between January 2012 and December 2013 from the contact lens clinic at the Eye and ENT Hospital of Fudan University were reviewed. The primary outcome measure was axial length change from baseline to the time of review (July-August 2015)...
2017: PloS One
https://www.readbyqxmd.com/read/28418775/research-101-an-initiative-to-encourage-and-facilitate-quality-resident-research-in-a-military-setting
#20
Kathryn E Marshall, Tanisha L Hammill
Objective Describe and evaluate a structured research program initiated at a tertiary Department of Defense (DOD) Medical Training Facility (MTF) to encourage and facilitate the conduct of research investigations, specifically among residents and junior or inexperienced investigators, but applicable for all DOD otolaryngology (ENT) and audiology providers. Methods A new comprehensive program was deployed in the ENT clinic at Madigan Army Medical Center (MAMC) to help improve the research program. Identified gaps in research methods and regulatory training were incorporated into the existing graduate medical education program along with structured mentorship between residents and senior staff...
April 1, 2017: Otolaryngology—Head and Neck Surgery
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