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https://www.readbyqxmd.com/read/28110467/an-overview-of-autosomal-dominant-tumour-syndromes-with-prominent-features-in-the-oral-and-maxillofacial-region
#1
REVIEW
Robert A Kennedy, Selvam Thavaraj, Salvador Diaz-Cano
Several autosomal dominant inherited tumour syndromes demonstrate prominent features in the oral and maxillofacial region. Although multiple organ systems are frequently involved, the target organs more frequently affected are the skin (nevoid basal cell carcinoma syndrome, Brooke-Spiegler syndrome, Birt-Hogg-Dube syndrome and Muir-Torre syndrome), gastrointestinal tract (Peutz-Jegher syndrome and Gardner syndrome) or endocrine system (multiple endocrine neoplasia type 2b and hyperparathyroidism-jaw tumour syndrome)...
January 21, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28110457/reduced-proliferation-and-colony-formation-of-head-and-neck-squamous-cell-carcinoma-hnscc-after-dual-targeting-of-egfr-and-hedgehog-pathways
#2
Hannes Liebig, Georg Günther, Marlen Kolb, Christian Mozet, Andreas Boehm, Andreas Dietz, Gunnar Wichmann
PURPOSE: The hedgehog signalling pathway (Hh) is frequently active in head and neck squamous cell carcinoma (HNSCC). Overexpressed Hh associates with poor prognosis. The Hh inhibitor vismodegib targets smoothened, and based on molecular data, may prevent resistance to EGFR targeting. METHODS: To elucidate potential roles of vismodegib in HNSCC therapy, its sole effects and those combined with cisplatin, docetaxel, and cetuximab on HNSCC cell lines were assessed by MTT metabolisation and BrdU incorporation...
January 21, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28110182/a-large-taper-mismatch-is-one-of-the-key-factors-behind-high-wear-rates-and-failure-at-the-taper-junction-of-total-hip-replacements-a-finite-element-wear-analysis
#3
Ariyan Ashkanfar, David J Langton, Thomas J Joyce
Total hip replacement (THR) is one of the most successful orthopaedic surgeries; however, failures can occur due to adverse reactions to wear debris. Recently, a large number of failures linked to the release of metal particles from the taper junction between femoral head and femoral stem have been reported. One possible reason for this may be design variations such as taper mismatches associated with the taper and trunnion angles. Could a large taper mismatch lead to inappropriate contact mechanics and increase relative micromotion and thus wear? In this study, 3D finite element (FE) models of a commercial THR from a perfectly matched interface to large taper mismatches and a wear algorithm were used to investigate the extent of wear that could occur at this junction and identify the optimum tolerances in order to reduce the wear...
January 12, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#4
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28110030/high-morbidity-and-mortality-after-lower-extremity-injuries-in-malawi
#5
Maganizo B Chagomerana, Jared Tomlinson, Sven Young, Mina C Hosseinipour, Leonard Banza, Clara N Lee
INTRODUCTION: A lower extremity injury can be a devastating event in low-income countries due to limited access to surgical care. Its incidence, treatment patterns, and outcomes, however, have not been well-described. METHODS: We prospectively enrolled all patients admitted with lower extremity trauma to a tertiary hospital in Lilongwe, Malawi between October 2010 and September 2011. Patients with a lower extremity injury but primarily admitted for unrelated reasons were excluded...
January 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28110028/surgical-ethical-and-psychosocial-considerations-in-head-transplantation
#6
REVIEW
Allen Furr, Mark A Hardy, Juan P Barret, John H Barker
Transplanting a head and brain is perhaps the final frontier of organ transplantation. The goal of body-to-head transplantation (BHT) is to sustain the life of individuals who suffer from terminal disease, but whose head and brain are healthy. Ideally BHT could provide a lifesaving treatment for several conditions where none currently exists. BHT is no ordinary experiment, to transfer a head to another body involves extraordinarily complex medical challenges as well as ethical and existential dilemmas that were previously confined to the imagination of writers of fiction...
January 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28109774/a-tomatinase-like-enzyme-acts-as-a-virulence-factor-in-the-wheat-pathogen-fusarium-graminearum
#7
Jason Carere, Aurélie H Benfield, Mélodie Ollivier, Chunji J Liu, Kemal Kazan, Donald M Gardiner
During their interactions with plants, fungal pathogens employ large numbers of pathogenesis- associated molecules including secreted effectors and enzymes that can degrade various defence compounds. However, in many cases, in planta targets of pathogen-produced enzymes remain unknown. We identified a gene in the wheat pathogen Fusarium graminearum, encoding a putative enzyme that shows 84% sequence identity to FoTom1, a tomatinase produced by the tomato pathogen Fusarium oxysporum f. sp. lycopersici. In F...
January 18, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28109633/the-american-college-of-radiology-and-the-american-brachytherapy-society-practice-parameter-for-the-performance-of-low-dose-rate-brachytherapy
#8
Akila N Viswanathan, Beth A Erickson, Geoffrey S Ibbott, William Small, Patricia J Eifel
Brachytherapy is the use of radionuclides to treat malignancies or benign conditions by means of a radiation source placed close to or into the tumor or treatment site. This practice parameter refers only to the use of radionuclide brachytherapy. Brachytherapy alone or combined with external beam therapy plays an important role in the management and treatment of patients with cancer. Low-dose-rate (LDR) brachytherapy has traditionally been used for treating prostate, head and neck, breast, cervical, and endometrial cancers as well as obstructive bile duct, esophageal, or bronchial lesions...
January 2017: Brachytherapy
https://www.readbyqxmd.com/read/28109518/the-controversial-existence-ratio-of-medial-head-of-triceps-canal
#9
Sheng Zhong, Bo Wu, Xingyu Fan, Junxue Song
No abstract text is available yet for this article.
January 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28109507/surgery-of-the-head-and-neck-in-patient-with-kniest-dysplasia-is-wound-healing-an-issue
#10
Qasim Husain, Jungsuk Cho, Jay Neugarten, Vikash K Modi
Kniest dysplasia is a type II collagen disorder that arises from a genetic mutation of the COL2A1 gene that results in short stature, midface anomalies, tracheomalacia, and hearing loss. Disruption of the normal collagen pathway can lead to many changes given its critical role in the body, and can cause complications with respect to wound healing. We present a case in which a patient with Kniest dysplasia successfully underwent multiple procedures in the head and neck region including cochlear implantation, mandibular distraction, palatoplasty, and laryngotracheal reconstruction...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28109486/a-population-based-analysis-of-the-implementation-of-pediatric-facemasks-in-girls-youth-lacrosse
#11
Andrew Walls, David Kasle, Nicole Aaronson, Earl Harley, Erik Waldman
OBJECTIVE: To determine the incidence, relative risk reduction, odds ratio and absolute risk reduction of head and ear injuries associated with the implementation of pediatric facial eye guards in lacrosse events. STUDY DESIGN: Cross Sectional Review of a National Database. STUDY LOCATION: National Emergency Injury Survelliance System. METHODS: Our group retrospectively reviewed a nationwide sampling estimate of 809 patients who presented to emergency rooms with head and ear injuries during lacrosse events...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28109485/ampleness-of-head-movements-of-children-and-adolescents-with-sensorineural-hearing-loss
#12
Renato de Souza Melo
INTRODUCTION: Head movements are controlled by the vestibular system. Children with sensorineural hearing loss can present restrictions in ampleness of head movements due to damage in the vestibule-cochlear systems, resulting from injury in the inner ear. OBJECTIVE: To evaluate the ampleness of head movements of children with normal hearing and children with sensorineural hearing loss and compare data between groups. METHODS: Cross-sectional study that evaluated the ampleness of head movements of 96 students, being 48 with normal hearing and 48 with sensorineural hearing loss, of both sexes, with aged between 7 and 18 years old...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28109483/otorhinolaryngology-head-and-neck-surgery-in-a-low-income-country-the-haitian-experience
#13
Maxwell P Kligerman, Anahuma Alexandre, Patrick Jean-Gilles, David Walmer, Mack L Cheney, Anna H Messner
OBJECTIVE: Little is known regarding the diagnosis and management of pediatric surgical conditions of the head and neck in low-income countries. Haiti, the western hemisphere's poorest country, recently developed its first Otorhinolaryngology (ORL) department at the Hopital de L'Universite d'Etat d'Haiti (HUEH). This manuscript assesses the caseload at HUEH with a special emphasis on pediatric cases, with the aim of characterizing ORL related conditions and their treatments in low-income countries...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28109476/a-three-lncrna-signature-derived-from-the-atlas-of-ncrna-in-cancer-tanric-database-predicts-the-survival-of-patients-with-head-and-neck-squamous-cell-carcinoma
#14
Wei Cao, Jian-Nan Liu, Zeqi Liu, Xu Wang, Ze-Guang Han, Tong Ji, Wan-Tao Chen, Xin Zou
OBJECTIVE: Long non-coding RNAs (lncRNAs) have important biological functions and can be used as prognostic biomarkers in cancer. To identify a lncRNA prognostic signature for head and neck squamous cell carcinoma (HNSCC). METHOD: We analysed RNA-seq data derived from the TANRIC database to identify a lncRNA prognostic signature model using the orthogonal partial least squares discrimination analysis (OPLS-DA) and 1.5-fold expression change criterion methods. The prognosis prediction model based on the lncRNA signatures and clinical parameters were evaluated using the 5-fold cross validation method...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109473/competing-causes-of-death-in-the-head-and-neck-cancer-population
#15
Sean T Massa, Nosayaba Osazuwa-Peters, Kara M Christopher, Lauren D Arnold, Mario Schootman, Ronald J Walker, Mark A Varvares
PURPOSE/OBJECTIVES: The increasing survivorship of head and neck squamous cell carcinoma (HNSCC) comes with a risk of death from other causes, known as competing causes. The demographics of HNSCC are also evolving with increasing incidence of Human Papillomavirus (HPV) associated tumors. This study describes competing causes of death for the HNSCC population compared to the general population and identifies associated risk factors. METHODS: Adult patients with first mucosal HNSCC (2004-2011) were identified from the Surveillance, Epidemiology and End Result database...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109472/depression-and-survival-in-head-and-neck-cancer-patients
#16
Katherine Rieke, Kendra K Schmid, William Lydiatt, Julia Houfek, Eugene Boilesen, Shinobu Watanabe-Galloway
OBJECTIVE: Though depression often afflicts head and neck cancer (HNC) patients, few studies have examined the association between depression and survival in this particular cancer population. The objective of this study is to investigate the five-year survival of HNC patients by depression status. MATERIALS AND METHODS: This study used SEER-Medicare data from 2002-2010 and identified depression diagnosis two years before and one year after cancer diagnosis. HNC patients were identified using ICD-O3 codes and depression was identified using ICD-9-CM codes from Medicare claims...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109471/smoking-status-regulates-a-novel-panel-of-piwi-interacting-rnas-in-head-and-neck-squamous-cell-carcinoma
#17
Aswini R Krishnan, Avinaash Korrapati, Angela E Zou, Yuanhao Qu, Xiao Qi Wang, Joseph A Califano, Jessica Wang-Rodriguez, Scott M Lippman, Melbourne F Hovell, Weg M Ongkeko
OBJECTIVE: Smoking remains a primary etiological factor in head and neck squamous cell carcinoma (HNSCC). Given that non-coding RNAs (ncRNAs), including PIWI-interacting RNAs (piRNAs), have emerged as mediators of initiation and progression in head and neck malignancies, we undertook a global study of piRNA expression patterns in smoking-associated HNSCC. MATERIALS AND METHODS: Using RNA-sequencing data from 256 current smoker and lifelong nonsmoker samples in The Cancer Genome Atlas (TCGA), we analyzed the differential expression patterns of 27,127 piRNAs across patient cohorts stratified by tobacco use, with HPV16 status and tumor status taken into account...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109470/the-fate-of-the-free-flap-pedicle-after-free-tissue-transfer-to-the-head-and-neck-area
#18
Maarten L V Van Genechten, Martin D Batstone
OBJECTIVES: Little is understood about what happens to the vascular pedicle following free tissue transfer in the head and neck region. The viability of a free flap completely depends on the vascular supply by its vascular pedicle until neovascularization occurs from surrounding tissues. The aim of this study is to find out how long a vascular pedicle lasts following free tissue transfer in the head and neck region. MATERIALS AND METHODS: Patients were recruited from the Maxillofacial Unit at the Royal Brisbane & Women's Hospital...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109469/associations-between-neighbourhood-support-and-financial-burden-with-unmet-needs-of-head-and-neck-cancer-survivors
#19
Katie M O'Brien, Aileen Timmons, Phyllis Butow, Rachael Gooberman-Hill, Eleanor O'Sullivan, Myles Balfe, Linda Sharp
PURPOSE: To assess the unmet needs of head and neck cancer survivors and investigate associated factors. In particular, to explore whether social support (family/friends and neighbours) and financial burden are associated with unmet needs of head and neck cancer (HNC) survivors. METHODS: This was a cross-sectional study of HNC survivors, with 583 respondents included in the analysis. Information was collected on unmet supportive care needs as measured by the Supportive Care Needs Survey (SCNS-SF34)...
February 2017: Oral Oncology
https://www.readbyqxmd.com/read/28109468/preclinical-models-in-hnscc-a-comprehensive-review
#20
REVIEW
Benoite Méry, Chloé Rancoule, Jean-Baptiste Guy, Sophie Espenel, Anne-Sophie Wozny, Priscilla Battiston-Montagne, Dominique Ardail, Michael Beuve, Gersende Alphonse, Claire Rodriguez-Lafrasse, Nicolas Magné
Head and neck cancer remains a significant public health concern. About 60% of patients die within 5years due to local recurrence. Head and neck squamous cell carcinoma (HNSCC) cell lines are important preclinical models in the search for new therapies against this disease. Furthermore, there is a need to test novel drugs before introduction into clinical practice. A preclinical model that closely resembles the in vivo situation would be highly valuable. In the last few decades, a multicellular spheroid model has gained attention as its behavior was comparable to in vivo tumors...
February 2017: Oral Oncology
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