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https://www.readbyqxmd.com/read/28547886/the-suction-mechanism-of-the-pipid-frog-pipa-pipa-linnaeus-1758
#1
David Cundall, Edward Fernandez, Frances Irish
Most suction-feeding, aquatic vertebrates create suction by rapidly enlarging the oral cavity and pharynx. Forceful enlargement of the pharynx is powered by longitudinal muscles that retract skeletal elements of the hyoid, more caudal branchial arches, and, in many fish, the pectoral girdle. This arrangement was thought to characterize all suction-feeding vertebrates. However, it does not exist in the permanently aquatic, tongueless Pipa pipa, an Amazonian frog that can catch fish. Correlating high-speed (250 and 500 fps) video records with anatomical analysis and functional tests shows that fundamental features of tetrapod body design are altered to allow P...
May 25, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28547793/the-anatomy-and-physiology-of-normal-and-abnormal-swallowing-in-oropharyngeal-dysphagia
#2
REVIEW
A Sasegbon, S Hamdy
BACKGROUND: Eating and drinking are enjoyable activities that positively impact on an individual's quality of life. The ability to swallow food and fluid is integral to the process of eating. Swallowing occupies a dual role being both part of the enjoyment of eating and being a critically important utilitarian activity to enable adequate nutrition and hydration. Any impairment to the process of swallowing can negatively affect a person's perception of their quality of life. The process of swallowing is highly complex and involves muscles in the mouth, pharynx, larynx, and esophagus...
May 25, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28538392/maculopapular-rash-after-intravitreal-injection-of-an-antivascular-endothelial-growth-factor-aflibercept-for-treating-age-related-macular-degeneration-a-case-report
#3
Norihiro Nagai, Mari Ibuki, Hajime Shinoda, Kaori Kameyama, Kazuo Tsubota, Yoko Ozawa
RATIONALE: Aflibercept, an anti-vascular endothelial growth factor (VEGF) drug, is used for treatment of colon cancer as well as retinal diseases, including wet age-related macular degeneration (AMD). It is injected into the vitreous cavity of eyes for treatment of AMD. Although vascular suppression-including cardiovascular events-and local infection related to the injection procedure are well-known potential adverse events, pathological immune responses after intravitreal aflibercept (IVA) injection have not been described...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28535134/upper-airway-obstruction-secondary-to-anticoagulant-rodenticide-toxicosis-in-five-dogs
#4
Corinne Lawson, Mauria O'Brien, Maureen McMichael
Five dogs were presented with clinical signs compatible with upper airway obstruction, including stridor, stertor, coughing, gagging, and varying degrees of respiratory distress. All dogs had radiographic findings of soft tissue opacity in the area of the pharynx, larynx, or trachea, and several had narrowing of the tracheal lumen. Coagulation abnormalities (prolonged prothrombin time, activated partial thromboplastin time) were present in the four dogs that underwent testing. Four of five dogs were treated for the coagulopathy, presumably due to anticoagulant rodenticide toxicosis, and survived to discharge...
May 23, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28534519/two-forms-of-death-in-ageing-caenorhabditis-elegans
#5
Yuan Zhao, Ann F Gilliat, Matthias Ziehm, Mark Turmaine, Hongyuan Wang, Marina Ezcurra, Chenhao Yang, George Phillips, David McBay, William B Zhang, Linda Partridge, Zachary Pincus, David Gems
Ageing generates senescent pathologies, some of which cause death. Interventions that delay or prevent lethal pathologies will extend lifespan. Here we identify life-limiting pathologies in Caenorhabditis elegans with a necropsy analysis of worms that have died of old age. Our results imply the presence of multiple causes of death. Specifically, we identify two classes of corpse: early deaths with a swollen pharynx (which we call 'P deaths'), and later deaths with an atrophied pharynx (termed 'p deaths'). The effects of interventions on lifespan can be broken down into changes in the frequency and/or timing of either form of death...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28533917/management-of-esophageal-caustic-injury
#6
EDITORIAL
Mark Anthony A De Lusong, Aeden Bernice G Timbol, Danny Joseph S Tuazon
Ingestion of caustic substances and its long-term effect on the gastrointestinal system maintain its place as an important public health issue in spite of the multiple efforts to educate the public and contain its growing number. This is due to the ready availability of caustic agents and the loose regulatory control on its production. Substances with extremes of pH are very corrosive and can create severe injury in the upper gastrointestinal tract. The severity of injury depends on several aspects: Concentration of the substance, amount ingested, length of time of tissue contact, and pH of the agent...
May 6, 2017: World Journal of Gastrointestinal Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28533859/-a-particular-type-of-cicatricial-pemphigoid-with-unique-iga-deposit
#7
Amina Aounallah, Mariem Jrad, Mehdi Ksiaa, Sana Mokni, Wafa Saidi, Lobna Boussofara, Badreddine Sriha, Mohamed Denguezli, Najet Ghariani, Colandane Belajouza, Rafia Nouira
Cicatricial Pemphigoid is a subepithelial bullous dermatosis which essentially involves the mucous membranes with cicatricial evolution We report the case of a 66-year old patient hospitalized with erosive gingivitis associated with dysphagia, dyspnea and blurred vision. Dermatologic examination showed erosive lesions involving the palate and the pharynx. Ophthalmologic examination showed symblepharons, ectropion and bilateral cataract. Gingival biopsy revealed a necrotic detachment of the buccal epithelium...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28530056/-cutaneous-leishmaniasis-in-israel-2016-an-update
#8
REVIEW
Michal Solomon, Eli Schwartz
Leishmaniasis is endemic in Israel and is increasing in its frequency. The pathogens that cause cutaneous leishmaniasis (CL) in Israel are Leishmania major (L. major) and Leishmania tropica (L. tropica). In recent years, there have been significant changes in the distribution of these species. L. major is endemic mainly in the Negev, Arava and the Beit She'an Valley. L. tropica is endemic in Tiberias, northern Sea of Galilee, Samaria and in the vicinity of Jerusalem such as at Kfar Adumim, Ma'ale Adumim and Anathoth (north-east of Jerusalem)...
October 2016: Harefuah
https://www.readbyqxmd.com/read/28528730/sir-charles-bell-unheralded-laryngologist
#9
Elliot Abemayor
INTRODUCTION: Sir Charles Bell is renowned and revered as an outstanding surgeon, anatomist, clinician and teacher and his many contributions to various medical fields have been amply described. What are less well-known are his contributions to the field of laryngology. METHODS: Selected clinical and physiological publications by Bell were examined that addressed issues related specifically to the airway or pharynx. These included both case reports and case series...
April 21, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28528491/high-resolution-manometry-evaluation-of-pressures-at-the-pharyngo-upper-esophageal-area-in-patients-with-oropharyngeal-dysphagia-due-to-vagal-paralysis
#10
Bruno Rezende Pinna, Fernando A M Herbella, Noemi de Biase, Thays C G Vaiano, Marco G Patti
The motility of the pharynx, upper esophageal sphincter (UES), and proximal esophagus in patients with oropharyngeal dysphagia is still not entirely understood. High-resolution manometry (HRM) was recently added to the armamentarium for the study of this area. This study aims to describe HRM findings in patients with vagal paralysis. Sixteen patients (mean age 54 years, 69% females) with oropharyngeal dysphagia due to unilateral vagal paralysis were prospectively studied. All patients underwent HRM. Motility of the UES and at the topography of the velopharynx and epiglottis were recorded...
May 20, 2017: Dysphagia
https://www.readbyqxmd.com/read/28528251/biological-activity-and-safety-profile-of-the-essential-oil-from-fruits-of-heracleum-mantegazzianum-sommier-levier-apiaceae
#11
Krystyna Skalicka-Woźniak, Agnieszka Grzegorczyk, Łukasz Świątek, Magdalena Walasek, Jarosław Widelski, Barbara Rajtar, Małgorzata Polz-Dacewicz, Anna Malm, Hosam O Elansary
A composition of essential oils obtained from Heracleum mantegazzianum (Apiaceae) was examined using a GC-MS method. n-Octyl acetate (19.92%), n-hexyl-2-methylbutanoate (10.84%), n-octanol (10.13%), n-octyl butanoate (8.88%), n-octyl-2-methylbutanoate (8.01%), n-hexyl acetate (7.11%), n-octyl isobutanoate (5.5%) and n-hexyl isobutanoate (5.43%) were the main compounds. The high-performance counter-current chromatography was applied for purification of aliphatic alcohols and esters. A mixture of n-hexane, acetonitrile and tetr-butyl methyl ether (1:1:0...
May 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28527873/comparison-of-xenon-with-led-illuminant-in-difficult-and-inhalation-injury-airway-scenario-a-randomized-crossover-manikin-study
#12
Andreas Moritz, Johannes Prottengeier, Joachim Schmidt
PURPOSE: The purpose of this study was to compare the effectiveness of a Xenon halogen with a light-emitting diode (LED) laryngoscope light handle in a difficult airway scenario, as well as in an inhalation injury airway scenario that combines a difficult airway and a limited view. METHODS: We recruited forty-two anesthetists into a randomized crossover trial. Each performed tracheal intubation (TI) with a Xenon halogen and a LED light handle in the two manikin scenarios...
May 8, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28527023/-high-resolution-manometry-of-pharyngeal-swallowing-dynamics
#13
REVIEW
M Jungheim, M Ptok
BACKGROUND: To transport a bolus from the mouth into the stomach, regular contraction of the pharyngeal muscles and a coordinated function of the upper esophageal sphincter (UES) are necessary. The muscle contraction generates intraluminal pressure, which pushes the bolus continuously forward. In contrast to imaging studies, manometric methods enable assessment of intraluminal pressure buildup and the function of the muscles involved. These methods were initially established for the esophagus and have been used increasingly in the pharynx for 7-8 years...
May 19, 2017: HNO
https://www.readbyqxmd.com/read/28515630/an-exception-to-the-rule-no-association-between-antibiotic-resistance-and-decreased-disinfectant-microbicidal-efficacy-orthophthalaldehyde-opa-and-pseudomonas-aeruginosa-isolated-from-icu-and-paraplegic-patients
#14
REVIEW
R Herruzo, M J Vizcaíno, I Herruzo
BACKGROUND: Antibiotic resistance and decreased susceptibility to disinfectants are not usually associated in microorganisms, but we have found an exception to this rule: P. aeruginosa versus orthophthalaldehyde (OPA). METHODS: Bactericidal effect of OPA was measured at 10 minutes on endodoncy files contaminated with an ATCC strain (control) or 206 strains of P. aeruginosa recently isolated from 206 ICU and paraplegic patients in a tertiary university hospital, in two consecutive years...
March 2017: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/28514359/-the-mathematical-approaches-to-differential-diagnostics-of-acute-pharyngeal-diseases
#15
A P Yastremsky, A I Izvin
The objective of the present study was to elaborate the program for differential diagnostics of acute pharyngeal diseases based on the 'ENT-Neuro' artificial neuronal network. The study group was formed by means of sampling patients with acute pharyngeal diseases from a set of case histories of the subjects presenting with acute inflammatory diseases. The data thus obtained were employed to develop the expert system to support the decision making process with the use of the 'ENT-Neuro' artificial neuronal network that allows to carry out diagnostics of various inflammatory diseases of the pharynx including the following nosological entities: paratonsillitis, parapharyngitis, acute tonsillitis, and acute pharyngitis, with the minimal probability of erroneous diagnosis (4%)...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28513864/the-influence-of-non-rigid-anatomy-and-patient-positioning-on-endoscopy-ct-image-registration-in-the-head-and-neck
#16
W Scott Ingram, Jinzhong Yang, Richard Wendt, Beth M Beadle, Arvind Rao, Xin A Wang, Laurence E Court
PURPOSE: To assess the influence of non-rigid anatomy and differences in patient positioning between CT acquisition and endoscopic examination on endoscopy-CT image registration in the head and neck. METHODS: Radiotherapy planning CTs and 31-35 daily treatment-room CTs were acquired for nineteen patients. Diagnostic CTs were acquired for thirteen of the patients. The surfaces of the airways were segmented on all scans and triangular meshes were created to render virtual endoscopic images with a calibrated pinhole model of an endoscope...
May 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28511419/nasal-nk-t-cell-lymphoma-presenting-with-perforation-of-palate-a-case-report-and-review-of-literature
#17
Shreyas N Shah, Priyank R Mistry, Girish R Chauhan, Vishal Chauhan, Jayshankar Pillai
Nasal Natural Killer (NK)/T cell lymphoma, commonly mentioned in the literature as Lethal Midline Granuloma (LMG) is an unusual pathology of the oro-maxillo-facial region characterized by aggressive and progressive destruction of the face, nose, palate and pharynx. This disease is now classified as a T-cell lymphoma based on modern cytogenetics, immunologic and molecular studies. However, it is mentioned in various literatures by various names. Here, we present one such clinically diagnosed, histopathologically and immunologically confirmed case of LMG, designated as NK/T cell lymphoma in a 56-year-old male...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509140/a-rare-adult-case-of-poststreptococcal-acute-glomerulonephritis-with-a-retropharyngeal-abscess
#18
Tsuyoshi Takashima, Sae Hirata, Mai Nonaka, Keiichiro Matsumoto, Yuki Awanami, Masatora Yamasaki, Makoto Fukuda, Motoaki Miyazono, Yuji Ikeda
Retropharyngeal abscess is an infection involving the retropharyngeal space which is posterior to the pharynx and oesophagus, and it results as a complication of a primary infection elsewhere in the head and neck including the nasopharynx, paranasal sinuses, or middle ear, which drain lymph to the retropharyngeal lymph nodes. Their lymph nodes are prominent in children and atrophy with age. Therefore, retropharyngeal abscess is most frequently encountered in children, with 75% of cases occurring before the age of 5 years, and often in the first year of life...
May 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28495877/a-maternal-effect-selfish-genetic-element-in-caenorhabditis-elegans
#19
Eyal Ben-David, Alejandro Burga, Leonid Kruglyak
Selfish genetic elements spread in natural populations and have an important role in genome evolution. We discovered a selfish element causing embryonic lethality in crosses between wild strains of the nematode Caenorhabditis elegans The element is made up of sup-35, a maternal-effect toxin that kills developing embryos, and pha-1, its zygotically expressed antidote. pha-1 has long been considered essential for pharynx development on the basis of its mutant phenotype, but this phenotype arises from a loss of suppression of sup-35 toxicity...
May 11, 2017: Science
https://www.readbyqxmd.com/read/28494532/risk-of-second-primary-cancer-in-people-with-non-melanoma-skin-cancer-a-nationwide-cohort-study
#20
Shu-Hui Wang, Ching-Chi Chi, Zi-Hao Zhao, Tao-Hsin Tung
Purpose: Previous western studies have found Caucasians with skin cancer, either melanoma or non-melanoma skin cancer (NMSC), have an elevated risk of second primary cancer. Our objective was to assess the risk of second primary cancer in Taiwanese with NMSC. Materials and Methods: By using data from Taiwan's National Health Insurance Research Database, we conducted a population-based cohort study to assess the risk of incident second primary cancer in Taiwanese affected by NMSC...
May 10, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
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