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https://www.readbyqxmd.com/read/28335320/cellular-interactions-and-formation-of-an-epithelial-nanocoating-like-barrier-with-mesoporous-silica-nanoparticles
#1
Xuan Li, Ka Yan Pang, Tsz Wing Ng, Ping Chung Leung, Cheng Fei Zhang, Ken Cham-Fai Leung, Lijian Jin
Oral mucosa as the front-line barrier in the mouth is constantly exposed to a complex microenvironment with multitudinous microbes. In this study, the interactions of mesoporous silica nanoparticles (MSNs) with primary human gingival epithelial cells were analyzed for up to 72 h, and their diffusion capacity in the reconstructed human gingival epithelia (RHGE) and porcine ear skin models was further assessed at 24 h. It was found that the synthesized fluorescent mesoporous silica nanoparticles (RITC-NPs) with low cytotoxicity could be uptaken, degraded, and/or excreted by the human gingival epithelial cells...
October 27, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334083/susceptibility-of-seven-selected-tomato-cultivars-to-tuta-absoluta-lepidoptera-gelechiidae-implications-for-its-management
#2
Saeedeh Ghaderi, Yaghoub Fathipour, Shahriar Asgari
Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a serious pest originating from South America that affects tomato production in many countries, particularly in Iran (since 2010). In this study, by using age-stage, two-sex life-table parameters, the resistance of seven tomato cultivars, namely, 'Primo Early', 'Rio Grande', 'Cal JN3', 'Petomech', 'Early Urbana Y', 'Super 2270', and 'Super Strain B' to T. absoluta, was evaluated under laboratory conditions (25 ± 1 °C, 60 ± 5% RH, and a photoperiod of 16:8 (L:D) h)...
February 19, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28333779/impact-of-chronic-suppurative-otitis-media-in-pediatric-cochlear-implant-recipients-insight-into-the-challenges-from-a-tertiary-referral-center-in-uk
#3
Paramita Baruah, Kate Hanvey, Richard Irving, Konstance Tzifa
OBJECTIVE: Analyze the presentation and evolution of chronic suppurative otitis media (CSOM) in children with cochlear implants (CI) and explore the merit of early intervention. STUDY DESIGN: Retrospective patient review. SETTING: Tertiary referral hospital and cochlear implant programme. PATIENTS: Children with a CI who developed CSOM. INTERVENTION: Tympanoplasty. MAIN OUTCOME MEASURES: Disease control, recurrence of cholesteatoma, cochlear implant preservation...
March 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28333389/the-cochlea-of-the-enigmatic-pygmy-right-whale-caperea-marginata-informs-mysticete-phylogeny
#4
Travis Park, Felix G Marx, Erich M G Fitzgerald, Alistair R Evans
The pygmy right whale, Caperea marginata, is the least understood extant baleen whale (Cetacea, Mysticeti). Knowledge on its basic anatomy, ecology, and fossil record is limited, even though its singular position outside both balaenids (right whales) and balaenopteroids (rorquals + grey whales) gives Caperea a pivotal role in mysticete evolution. Recent investigations of the cetacean cochlea have provided new insights into sensory capabilities and phylogeny. Here, we extend this advance to Caperea by describing, for the first time, the inner ear of this enigmatic species...
March 23, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28332779/intrafamilial-phenotypic-variability-in-a-polish-family-with-sensenbrenner-syndrome-and-biallelic-wdr35-mutations
#5
Joanna Walczak-Sztulpa, Anna Wawrocka, Agata Sobierajewicz, Lukasz Kuszel, Jan Zawadzki, Ryszard Grenda, Anna Swiader-Lesniak, Beata Kocyla-Karczmarewicz, Anna Wnuk, Anna Latos-Bielenska, Krystyna H Chrzanowska
Sensenbrenner syndrome (cranioectodermal dysplasia, CED) is a very rare autosomal recessive ciliopathy. Cranioectodermal dysplasia is characterized by craniofacial, skeletal, and ectodermal abnormalities. About 50 patients have been described to date. Sensenbrenner syndrome belongs to a group of ciliary chondrodysplasias and is a genetically heterogeneous disorder. Mutations in five genes: IFT122, WDR35, IFT43, WDR19, and IFT52 have been associated with CED. All known genes encode proteins that are part of the intraflagellar transport complex, which plays an important role in the assembly and maintenance of cilia...
March 23, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28332011/delayed-otolith-development-does-not-impair-vestibular-circuit-formation-in-zebrafish
#6
Richard Roberts, Jeffrey Elsner, Martha W Bagnall
What is the role of normally patterned sensory signaling in development of vestibular circuits? For technical reasons, including the difficulty in depriving animals of vestibular inputs, this has been a challenging question to address. Here we take advantage of a vestibular-deficient zebrafish mutant, rock solo (AN66) , in order to examine whether normal sensory input is required for formation of vestibular-driven postural circuitry. We show that the rock solo (AN66) mutant is a splice site mutation in the secreted glycoprotein otogelin (otog), which we confirm through both whole genome sequencing and complementation with an otog early termination mutant...
March 22, 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28330290/successful-cloning-of-an-adult-breeding-boar-from-the-novel-chinese-guike-no-1-swine-specialized-strain
#7
Jun-Yu Nie, Xiang-Xing Zhu, Bing-Kun Xie, Su-Qun Nong, Qing-Yan Ma, Hui-Yan Xu, Xiao-Gan Yang, Yang-Qing Lu, Ke-Huan Lu, Yu-Ying Liao, Sheng-Sheng Lu
Somatic cloning, also known as somatic cell nuclear transfer (SCNT), is a promising technology which has been expected to rapidly extend the population of elaborately selected breeding boars with superior production performance. Chinese Guike No. 1 pig breed is a novel swine specialized strain incorporated with the pedigree background of Duroc and Chinese Luchuan pig breeds, thus inherits an excellent production performance. The present study was conducted to establish somatic cloning procedures of adult breeding boars from the Chinese Guike No...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329655/new-keratinocyte-carcinomas-worsen-skin-related-quality-of-life
#8
Julia A Siegel, Mary-Margaret Chren, Martin A Weinstock
Keratinocyte carcinoma (KC) is the most common malignancy in the U.S. Because KC affects many people but has a low mortality rate, it is important to consider the impact of KC on skin-related quality of life (QoL). We aimed to determine if KCs, actinic keratoses (AKs), and several demographic and health-related factors were associated with skin- related QoL in those at high risk for KC. We used data from a double-blind, placebo- controlled trial in which 932 veterans with multiple prior KCs were randomized to apply topical 5-fluorouracil (5-FU) or vehicle control cream to the face/ears...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329594/perforating-gout-of-the-ear
#9
Leigh Sutton, Palak Parekh
Gout is the most common cause of inflammatory arthritis in men over 40 [1]. The prevalence of gout in the US is approximately 3.9%. Tophus is a characteristic sign of gout and results when monosodium urate deposits at the joint, skin, or cartilage. Tophi develop in 12-35% of patients who are diagnosed with gout [2]. We report a case of a 70-year-old man who was diagnosed with squamous cell carcinoma of the helix via shave biopsy. During Mohs micrographic surgery, a vigorous foreign-body reaction was noted. Review of the initial biopsy slides identified crystals with pseudoepitheliomatous hyperplasia (PEH) rendering a diagnosis of gout...
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329568/localized-cutaneous-argyria-report-of-two-patients-and-literature-review
#10
Bryce David Beutler, Robert A Lee, Philip R Cohen
BackgroundLocalized cutaneous argyria is a rare skin condition caused by direct contact with silver or silver particles. It presents as asymptomatic gray or blue-gray macules that appear similar to blue nevi. Histologic features include brown-colored or black-colored silver granules in the basement membrane and dermis, most commonly surrounding eccrine glands, elastic fibers, and collagen fibrils. The condition is most frequently observed in individuals who are regularly exposed to small silver particles, such as silversmiths and welders...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328389/tablet-based-hearing-screening-test
#11
Alessandra G Samelli, Camila M Rabelo, Seisse G G Sanches, Camila P Aquino, Denise Gonzaga
INTRODUCTION: Hearing loss (HL) affects people worldwide, many of whom are children. Especially in developing countries, epidemiological data on the prevalence of HL are insufficient to implement effective health promotion programs. In this preliminary study with young adults, we describe and validate a tablet-based hearing screening test developed for interactive remote hearing screening and compare the performance of an audiometry screening tablet application with conventional audiometry...
February 22, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/28326059/unilateral-cochlear-implantation-reduces-tinnitus-loudness-in-bimodal-hearing-a-prospective-study
#12
Jérôme J Servais, Karl Hörmann, Elisabeth Wallhäusser-Franke
Perceptive and receptive aspects of subjective tinnitus like loudness and tinnitus-related distress are partly independent. The high percentage of hearing loss in individuals with tinnitus suggests causality of hearing impairment particularly for the tinnitus percept, leading to the hypothesis that restoration of auditory input has a larger effect on tinnitus loudness than on tinnitus-related distress. Furthermore, it is assumed that high levels of depression or anxiety prevent reductions of tinnitus loudness and distress following restoration of activity in the cochlea...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28325168/impact-of-pharyngofixation-in-cleft-palate-repair-surgery-on-the-development-of-chronic-adhesive-otitis-media
#13
L Otruba, P Schalek, Z Hornáčková
BACKGROUND: A significant percentage of children with cleft palate suffer from otitis media with effusion and its consequences, such as deafness, chronic adhesive otitis and cholesteatoma. This study aimed to determine whether these effects can be minimised by selecting pharyngofixation as the surgical technique for cleft palate correction. METHODS: A retrospective study was performed of 155 patients (308 ears) who underwent surgery from age 5 months to 8 years and were followed up for 36-84 months...
March 22, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28322111/hpv-in-larynx-squamous-cell-carcinoma-new-serotypes-and-survival-study-within-10-year-follow-up
#14
Alvaro Sánchez Barrueco, Fernando González Galán, David Lora Pablos, José Miguel Villacampa Aubá, Claudio Ballestín Carcavilla, Carlos Cenjor Español, Carlos Almodóvar Álvarez
Objective To determine the presence of human papillomavirus (HPV) in head and neck squamous cell carcinoma, specifically in the larynx without the bias of other sublocations, and to describe the different serotypes of HPV and their impact on overall and disease-free survival after 10-year follow-up. Study Design Retrospective case series with chart review of ear, nose, and throat oncologic database. Setting Academic tertiary care hospital. Subjects A total of 123 samples of larynx squamous cell carcinoma were included, only from the glottis and treated only with surgery between 1977 and 2005...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28321772/paragangliomas-of-the-head-and-neck-an-overview-from-diagnosis-to-genetics
#15
Michelle D Williams
Paragangliomas (PGL) develop from the parasympathetic system in the head and neck (HN) and arise primarily in four distinct areas: Carotid body, vagal, middle ear, and larynx. Globally, the diagnosis and morphologic features are the same regardless of anatomic site, however the incidence, frequency of genetic alterations/syndromes and differential diagnosis vary. It is now recognized that nearly 40% of all HN PGLs are hereditary, including a significant subset without a known family history. Now pathologists are central to the evaluation for diagnosis and further management of patients with HNPGLs...
March 20, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28320734/topless-mediates-brassinosteroid-control-of-shoot-boundaries-and-root-meristem-development-in-arabidopsis-thaliana
#16
Ana Espinosa-Ruiz, Cristina Martínez, Miguel de Lucas, Norma Fàbregas, Nadja Bosch, Ana I Caño-Delgado, Salomé Prat
The transcription factor bri1-EMS-SUPRESSOR1 (BES1) is a master regulator of brassinosteroid (BR)-regulated gene expression. BES1 together with BRASSINAZOLE-RESISTANT1 (BZR1) drive activated or repressed expression of several genes, and have a prominent role in negative regulation of BR synthesis. Here, we report that BES1 interaction with TOPLESS (TPL), via its ERF-associated amphiphilic repression EAR motif, is essential for BES1-mediated control of organ boundary formation in the SAM and the regulation of the quiescent center (QC) cell division in roots...
March 20, 2017: Development
https://www.readbyqxmd.com/read/28319939/radical-scavenging-activity-of-a-sunscreen-enriched-by-antioxidants-providing-protection-in-the-whole-solar-spectral-range
#17
Carla Souza, Patrícia Maia Campos, Sabine Schanzer, Stephanie Albrecht, Silke B Lohan, Jürgen Lademann, Maxim E Darvin, Martina C Meinke
BACKGROUND/AIM: The main reason for extrinsic skin aging is the negative action of free radicals. The formation of free radicals in the skin has been associated with ultraviolet (UV) exposure and also to visible (VIS) and near-infrared (NIR) irradiations. The aim of the present study was to evaluate the efficacy of a sunscreen in the whole solar range. METHODS: The radical-scavenging activity of a sunscreen in the UV, VIS, and NIR ranges was evaluated using electron paramagnetic resonance spectroscopy...
March 21, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28319625/photoprotection-prevents-skin-cancer-let-s-make-it-fashionable-to-wear-sun-protective-clothing
#18
Jeffrey M Milch, Nicholas F Logemann
Protection from UV radiation (UVR) is of paramount importance in preventing skin cancers, the majority of which occur on sun-exposed areas of the face, ears, and neck. A reusable, inexpensive, and truly simple measure of personal protection that greatly reduces exposure to UVR, thereby reducing the risk for developing skin cancers, can be achieved simply by regularly wearing a wide-brimmed hat. In some areas of the world where sunny climates are pervasive and exposure to UVR is part of everyday life, fashion trends, policy, and public health initiatives are in sync, and photoprotection with wide-brimmed hats is embraced as a common and fashionable practice...
February 2017: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28306652/tests-of-eustachian-tube-function-the-effect-of-testing-technique-on-tube-opening-in-healthy-ears
#19
Matthew E Smith, Andrew J C Blythe, Charlotte Baker, Charlie C Zou, Peter J A Hutchinson, James R Tysome
OBJECTIVE: There is no agreement on the best clinical test for Eustachian tube (ET) dysfunction. Numerous tests have been developed to detect ET opening, and all require a patient to perform a Valsalva, Toynbee or sniff maneuver, or to swallow on demand. We aimed to characterize existing tests of ET function in healthy ears, and identify the optimal method and patient maneuver for each test. Our own normative data is presented alongside published comparisons. STUDY DESIGN: Diagnostic test cohort study...
March 16, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28304003/a-huge-thornwaldt-s-cyst-causing-hearing-loss-in-an-adult-patient
#20
Nazim Bozan, Yunus Feyyat Sakin, Pinar Kundi, Muzaffer Ari, Ferhat Bozkus
Nasopharynx (NP) is anatomically difficult to explore adequately. The pharyngeal bursa (PB) is a recess lined with respiratory epithelium along the posterior wall of the nasopharynx between the longus capitis muscles. If the opening through which the bursa drains into the nasopharynx becomes obstructed, a Thornwaldt's cyst (TC) might develop. Small-sized cysts are mostly asymptomatic, whereas large-sized cysts may lead to various nasal and otologic symptoms depending on their localization. In this report, we present a 71-year-old case with a huge TC who presented to our clinic with the complaints of snoring, nasal obstruction, periodic halitosis, postnasal drip, headache, and hearing loss in the left ear and underwent total excision of the cyst through transnasal endoscopy...
March 2017: JPMA. the Journal of the Pakistan Medical Association
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