Comparative analysis of the expression of E-cadherin, β-catenin,and β1 integrin in congenital and acquired cholesteatoma

E-cadherin, β-catenin, and β1 integrin are important cell adhesion molecules to maintain epithelial structure and function. We investigated the expression of these cell adhesion molecules in cholesteatomas to understand the role of cell–cell and cell–extracellular matrix interaction in cholesteatomas. An immunohistochemical investigation was carried out on 35 cholesteatoma tissue samples (14 congenital, 21 acquired cholesteatomas) and 10 normal retroauricular skin (RAS) tissues which are obtained during middle ear surgery. The expression rate was measured to find out differences between retroauricular skin and cholesteatoma, as well as between congenital and acquired cholesteatoma. E-cadherin expression rate was significantly lower in the cholesteatoma (spinous layer 88.7 ± 17.9 %, granular layer 54.6 ± 22.6 %) than in the RAS (100 %, 74.4 ± 7.4 %) and in the acquired (83.3 ± 19.4 %, 48.1 ± 22.9 %) than in the congenital (96.7 ± 12.0 %, 64.4 ± 18.8 %). β-catenin expression rate was significantly lower in the cholesteatoma (spinous layer 84.1 ± 17.2 %, granular layer 28.7 ± 30.8 %) than in the RAS (100 %, 75.9 ± 6.1 %) and in the acquired (78.1 ± 17.0 %, 17.1 ± 22.3 %) than in the congenital (93.2 ± 13.5 %, 46.1 ± 34.2 %). The expression pattern of β-catenin is similar to that of E-cadherin. In β1 integrin, there was no significant difference of the expression rate between RAS and cholesteatoma, as well as between congenital and acquired cholesteatoma. In conclusion, the expression of E-cadherin and β-catenin is reduced in cholesteatoma, and the reduction is more pronounced in acquired cholesteatoma than in congenital cholesteatoma. Acquired cholesteatomas showed more aggressive characteristics than congenital cholesteatomas in terms of cell–cell adhesion.     

Value of angiography and embolisation in treatment of head and neck vascular malformations at Otolaryngology Department, Poznań University of Medical Sciences, Poland

Angiography is an invasive, radiological investigation of vascular system. It plays an important role within variety of diagnostic tools in head and neck pathologies. In selected cases with well defined tumor supply vessels, angiography may be combined with intravascular obliteration. This possibility widen indications, which comprise diagnostic arteriographies - visualization of blood supply and extension of vascularization; therapeutic and diagnostic arteriographies - palliative or radical in character, dependent on pathology; and therapeutic angiographies as adjuvant therapy prior to surgical treatment. Authors present their experience with endovascular techniques application in head and neck pathologies. Material comprised 59 angiographies performed in patients treated at Otolaryngology Department at Poznań University of Medical Sciences between 2000-2007. In conclusion authors emphasize advantages and disadvantages, as well as, the role of the endovascular treatment in head and neck surgery.     

Immunogold TEM of otoconin 90 and otolin - relevance to mineralization of otoconia, and pathogenesis of benign positional vertigo

Implementation of the deep-etch technique enabled unprecedented definition of substructural elements of otoconia, including the fibrillar meshwork of the inner core with its globular attachments. Subsequently the effects of the principal soluble otoconial protein, otoconin 90, upon calcite crystal growth in?vitro were determined, including an increased rate of nucleation, inhibition of growth kinetics and significant morphologic changes. The logical next step, ultrastructural localization of otoconin 90, by means of immunogold TEM in young mature mice, demonstrated a high density of gold particles in the inner core in spite of a relatively low level of mineralization. Here gold particles are typically arranged in oval patterns implying that otoconin 90 is attached to a scaffold consisting of the hexagonal fibrillar meshwork, characteristic of otolin. The level of mineralization is much higher in the outer cortex where mineralized fiber bundles are arranged parallel to the surface. Following decalcification, gold particles, as well as matrix fibrils, presumed to consist of a linear structural phenotype of otolin, are aligned in identical direction, suggesting that they serve as scaffold to guide mineralization mediated by otoconin 90. In the faceted tips, the level of mineralization is highest, even though the density of gold particles is relatively low, conceivably due to the displacement by the dense mineral phase. TEM shows that individual crystallites assemble into iso-oriented columns. Columns are arranged in parallel lamellae which convert into mineralized blocks for hierarchical assembly into the complex otoconial mosaic. Another set of experiments based on immunogold TEM in young mice demonstrates that the fibrils interconnecting otoconia consist of the short chain collagen otolin. By two years of age the superficial layer of mouse otoconia (corresponding to mid-life human) has become demineralized resulting in weakening or loss of anchoring of the fibrils interconnecting otoconia. Consequently, otoconia detached from each other may be released into the endolymphatic space by minor mechanical disturbances. In humans, benign positional vertigo (BPV) is believed to result from translocation of otoconia from the endolymphatic space into the semi-circular canals rendering their receptors susceptible to stimulation by gravity causing severe attacks of vertigo. The combinations of these observations in humans, together with the presented animal experiments, provide a tentative pathogenetic basis of the early stage of BPV.     

Patient,disease, and outcome characteristics of benign paroxysmal positional vertigo with and without Meniere’s disease

Abstract

Background: Meniere’s disease (MD)-associated benign paroxysmal positional vertigo (BPPV) is complex and difficult to diagnose, and reports of its prevalence, pathologic features and outcomes are sparse and conflicting.

Objective: Report disease characteristics and outcomes associated with the presence of MD in patients with BPPV.

Materials/methods: A retrospective study of patients with BPPV between 2007 and 2017 at a single, high-volume institution.

Results: Of 1581 patients with BPPV identified, 7.1% had MD and 71.9% of those patients had BPPV in the same ear(s) as MD. Patients with MD were more likely to have lateral semicircular canalithiasis (11.6% vs. 5.5%, p?=?.009) and multiple canalithiasis (7.1% vs. 2.5%, p?=?.005). MD was associated with an increased rate of resolution of BPPV (p?=?.008) but also increased time to resolution (p?=?.007). There was no association between MD and recurrence of BPPV.

Conclusions: MD is associated with lateral canalithiasis. Contrary to prior reports, BPPV in MD can affect either ear and was not associated with poorer outcomes than idiopathic BPPV.

Significance: The largest series to date investigating disease and outcome characteristics for BPPV in MD is presented. These data inform diagnosis and expectations in the management of these complex patients.     

Questionnaire investigation of musicians’ use of hearing protectors,self reported hearing disorders,and their experience of their working environment

Musicians in symphony orchestras are exposed to harmful sound levels. Although research shows that industrial workers have a higher propensity to noise-induced hearing loss, musicians can also develop a hearing loss from noise exposure. Furthermore, musicians can suffer from tinnitus, hyperacusis, and distortion, among other hearing disorders, which can affect their work more severely than a hearing loss. This study investigated the use of hearing protectors, the prevalence of self-reported hearing disorders among musicians, and the importance of these hearing disorders to the musicians. The musicians at three Danish symphony orchestras were asked to complete a questionnaire on the topic. Results showed that Danish musicians are aware of the dangers of loud music, yet they rarely use hearing protectors and not always correctly; however, musicians with hearing disorders use hearing protectors more frequently. In addition, the musicians questioned suffered from different hearing disorders. Education is needed to change musicians’ opinion of hearing conservation and hearing protectors. The education must be directed to both the musicians and the administration of the symphony orchestras.     

Study of the prevalence of impaired hearing and its determinants in the city of Itajaí, Santa Catarina State,Brazil

The number of people with impaired hearing is increasing; knowing its magnitude is essential for public health.ObjectiveTo study the prevalence and determinants of impaired hearing in Itajaí/SC.MethodsA population-based survey based on a World Health Organization protocol. Field research was carried out from July 2008 to 2011. Procedures for evaluating hearing in households: questionnaire, measurement of noise, otoscopy, pure tone audiometry at 1000, 2000, and 4000 Hz, tympanometry, and acoustic reflexes: individuals above 4 years; children under 4 years: evoked otoacoustic emissions (OAE), cocleo-palpebral reflex(CPR), tympanometry, and acoustic reflexes. In the elderly population a questionnaire of perception of hearing loss was applied.ResultsThe study sample consisted of 379 individuals – 45.38% were males and 54.62% were females. Age-range: 11.34% up to 10 years; 64.39% 10 to 60 years, 24.27% over 60 years. Evaluation of the best hearing ear showed that 74.1% of residents had normal hearing, 18.9% had mild hearing loss, 5.1% had moderate hearing loss, 1.9% had severe hearing loss. Disabling impaired hearing was detected in 26 subjects: one child (otitis media); four adults (one otitis, one noise-induced, two idiopathic); 21 elderlies (presbyacusis). Of eight children under 4 years all presented CPR, three were normal examinations, two had absent OAE bilaterally, one had absent OAE in the right ear and one in the left ear.ConclusionThe prevalence of disabling impaired hearing in Itajaí was 7%; the highest prevalence was in the 50-year and above age group – the main cause was presbyacusis.     

A case of cortical deafness and loss of vestibular and somatosensory sensations caused by cerebrovascular lesions in bilateral primary auditory cortices,auditory radiations,and postcentral gyruses – complete loss of hearing despite normal DPOAE and ABR

Conclusion: A right-handed 38-year-old man’s complete loss of hearing could be diagnosed as cortical deafness caused by cerebral vascular lesions in bilateral auditory cortices. Objective: The aim of this case report was to study the pathophysiology of a particular patient who manifested deafness without residual hearing and lost somatosensory sensation, vestibular sensation, and articulation ability after a right internal carotid-posterior communicating artery (IC-PC) aneurysm and subarachnoidal hemorrhage. Methods: MRI, aphasia and neurological tests, subjective and objective audiometry, and vestibular function tests were performed. Results: The neurological test revealed system loss of somatosensory sensation with normal motor function and articulation ability. Brain imaging revealed extensive infarction in the bilateral primary auditory cortices, postcentral gyruses, and the bilateral partial third frontal gyruses. Pure-tone audiometry of both ears revealed off-the-scale results and speech audiometry demonstrated 0% maximum speech discrimination. However, objective audiometry showed normal distortion product otoacoustic emissions (DPOAE) and normal auditory brainstem response (ABR). The patient showed 0% perception of environmental, speech, and music sounds in both ears. He was unable to feel vestibular sensation despite normal caloric nystagmus. He showed no damage to his larynx or articulation organs.     

Older adults’ performance on the speech,spatial, and qualities of hearing scale (SSQ): Test-retest reliability and a comparison of interview and self-administration methods

Abstract

The purposes of the study were to examine the test-retest properties of the speech, spatial, and qualities of hearing scale (SSQ) and to determine if the method of test administration affected these properties. Four groups of 40 older adult participants completed the SSQ twice at an interval of about a half year, using either the same or different administration methods at the two test times. The SSQ was administered using an interview method and/or it was self-administered and then returned by mail. Although the method of test administration did not systematically affect scores on the SSQ, the highest test-retest correlation (r = 0.83) was observed using the interview method at both test times, making it the best choice for the purpose of demonstrating the effectiveness of interventions. The other three combinations of dual-administration in this study also provided reliable results and may be preferable because the self-administration method is less time-consuming and labour-intensive. In conclusion, both the interview and self-administration methods are recommended, but with the best choice depending on the goals of the tester.

Sumario

El propósito de este estudio fue examinar las propiedades test-retest de la escala de audición del habla, espacial y de cualidades (SSQ) y determinar si el método de administración de la prueba afecta esas propiedades. Cuatro grupos de 40 participantes adultos mayores completaron el SSQ dos veces con un intervalo de cerca de medio año, usando (tanto) el mismo o un diferente método de administración en los dos tiempos de la prueba. El SSQ se administró usando un método de entrevista y/o por la auto aplicación y luego, enviado por correo. No obstante que el método de administración de la prueba no afectó sistemáticamente las puntuaciones del SSQ, la mayor correlación test-retest (r = 0.83) se observó usando el método de entrevista en los dos tiempos de la prueba, haciendo de él la mejor selección para demostrar la efectividad de las intervenciones. Las otras tres combinaciones de la administración doble en este estudio, dieron resultados confiables y pueden ser preferibles, porque el método de auto aplicación consume menos tiempo y requiere menor trabajo intensivo. En conclusión, se recomiendan tanto los métodos de entrevista como el de auto aplicación, pero la mejor selección dependerá de las metas del examinador.     

Localisation and direction of spread in oral and oropharyngeal cancer in the material of Head and Neck Oncological Surgery Department, University of Medical Sciences in Poznań

The directions of tumor spread are determined by the anatomy of the affected organ. The vessel, nerve anatomy and presence of structures, that may potentially constitute a barrier for spread out of the tumor are of crucial importance. The aim of this paper was to presentation of the spreading directions of oral cavity and oropharyngeal squamous cell cancer based on the own experience. Material include 163 patients surgically treated between 2003-2003 in Department of ENT, Head and Neck Oncological Surgery Department in Poznań. The examination was conducted on the base of retrospective analysis of ambulatory charts and the hospital files. Results: 163 (90%) patients were operated for primary oral and oropharyngeal cancer. The primary localization included in the palatine tonsil (82 patients), trunk of the tongue (48 patients) and floor of the mouth (20 patients) were predominated. The spread directions included: floor of the mouth (36) soft palate (35), base of tongue (33), hypopharynx (20) and trunk of tongue (16). The 31 crossed the midline, 27 infiltrated the tonsillopalatine angle, 9 retromolar area and 3 the mucosa of the cheek. Knowledge of anatomy facility in clinical evaluation of spreading malignancy. It helps in proper qualification to surgery or radiotherapy.     

A Randomized, Double-blinded, Open Label Study of the Efficacy and Safety of Cefcapene Pivoxil and Amoxicillin·Clavulanate in Acute Presumed Bacterial Rhinosinusitis

Objectives

Currently established first line therapy of acute (presumed bacterial) rhinosinusitis (ARS) consists of 10 to 14 days of oral amoxicillin or cephalosporins. This study compared the clinical efficacy and tolerance of cefcapene pivoxil (CP) and amoxicillin-clavulanate (AMC) in patients with ARS.

Methods

A randomized, open labeled, double-blinded trial of ARS patients over 15 years of age was performed. Patients diagnosed with ARS received paranasal sinus X-rays and nasal endoscopies and 2 weeks of either CP (150 mg, 3 times/ day) or AMC (625 mg, amoxicillin 500 mg, 3 times/day). All patients revisited the clinic on days 7, 14, and 28 for evaluation of changes in symptoms, endoscopy, and monitoring of any adverse reactions. Demographics, clinical characteristics and drug efficacy were also compared between the two groups.

Results

Among the 60 initially enrolled patients (CP 30, AMC 30), 5 patients in the CP group and 6 in the AMC group were excluded due to poor compliance. There were no significant differences in demographic data including age, sex, initial signs and symptoms, endoscopic and X-ray findings between the two groups. Rates of improvement after 2 weeks were 96% and 95.8% in the CP and AMC group, respectively. Sinus symptoms were changed significantly after 2 and 4 weeks, however, there was no difference between groups (P=0.41). The most common adverse reaction was gastrointestinal complication, diarrhea occurred in 1 patient in the CP group and 6 in the AMC group (P=0.04).

Conclusion

CP and AMC were both effective in treating ARS. The difference of treatment outcome was not found between the two groups, however, gastrointestinal complications were less prevalent in the CP group.     

Ear, nose, and throat manifestations of Sjögren's syndrome: retrospective review of a multidisciplinary clinic

OBJECTIVE: To assess the otolaryngologic manifestations of S?gren's syndrome (SS). DESIGN: A retrospective case study. SETTING: The Toronto Hospital. METHOD: Case note review of 196 patients evaluated in a multidisciplinary clinic for this disease. Patients were retrospectively classified according to the revised international classification. MAIN OUTCOME MEASURES: The prevalence of subjective and objective audiologic and otorhinolaryngologic abnormalities. RESULTS: One hundred eleven patients were diagnosed with primary and 26 with secondary SS, leaving 60 with unclassified sicca syndrome. There was minimal otologic pathology. There was a mildly increased prevalence of sensorineural deafness in secondary SS (41-60 years, 36%; 61-80 years, 70%). Approximately 50% of patients in each group complained of nasal symptoms, but only 20% had abnormal findings on rhinoscopy. Similarly, 60 to 70% in each group complained of throat symptoms, but only 20% had abnormal findings on indirect laryngoscopy. Thirty-eight percent of primary patients had parotid gland symptoms, and 25% had abnormally swollen glands, with eight subsequently diagnosed with lymphoma. No patients in the other two groups had abnormal parotid glands. CONCLUSIONS: SS does not appear to be associated with increased otologic or audiologic disease, except perhaps in conjunction with systemic autoimmunity. Nose and throat symptoms are common in SS, but the complications of mucosal dryness on examination are unusual (approximately 20%). Primary SS can cause serious parotid morbidity secondary to inflammation and infection. There is also a significant risk of lymphomas that often present as parotid masses, necessitating long-term follow-up.     

Psychological, neural, endocrine, and immune study of stress in tinnitus patients: any correlation between psychometric and biochemical measures?

OBJECTIVES: The present study was carried out in tinnitus patients in order to study the psychological distress and the biochemical measures of this stressful condition. Psychological features were compared to immune and neuroendocrine parameters in order to verify in these subjects the possible presence of psychological and somatic responses to stress. METHODS: We studied 85 tinnitus patients who underwent hematochemical immune tests: lymphocyte subpopulations (CD3; CD4; CD3+CD4; CD8; CD19; CD16NK; CD3+CD16+CD56; and CD4/CD8), cortisol, adrenocorticotropic hormone, beta-endorphin, prolactin, and urinary catecholamine. RESULTS: Clinically, significant scores were obtained for hysteria, depression, paranoia, hypochondrias, and social introversion; and high scores were obtained for anxiety, depression, care for health, difficulty of treatment, low self-esteem, family and work difficulties, and social discomfort. There was a low to medium level of self-perception of stress. The less a subject felt stressed, the higher was his or her satisfaction level in the areas of psychological and physical functioning. The scores on the tests and the biochemical measures did not show a significant correlation, but there was a tendency to correlation for the lymphocytes CD19 and CD16NK and for adrenocorticotropic hormone. CONCLUSIONS: The comparison between the psychometric and biochemical variables did not reveal any significant correlation among stress perception, daily satisfaction, and the biochemical parameters of stress.     

Epidemiological features of cancers of the oral cavity,oropharynx, hypopharynx and larynx cancer in Réunion Island

IntroductionThis study had two objectives: firstly, to identify and compare characteristics of cancer of the oral cavity, oropharynx, hypopharynx and larynx in Réunion Island, a tropical French overseas territory in the southern hemisphere; and secondly, to discuss how incidence of these cancers is presented in the international literature.Material and methodA retrospective study included 599 patients diagnosed with cancer of the oral cavity, oropharynx, hypopharynx or larynx between 2009 and 2013 in Réunion Island. Demographic characteristics and data on alcohol consumption, smoking habits and HPV infection were analyzed. Standardized incidences were calculated for the worldwide population for both genders.ResultsSex ratio was 7.7 and mean age was 60 years. Cancer consisted of squamous cell carcinoma in 99.1% of patients. Three hundred and forty over 375 patients (81.25%) showed alcohol abuse; 309/359 (86.1%) were smokers; 31/184 (16%) had HPV infection. On the International Agency for Research on Cancer (IARC) anatomic classification, the incidence of “other pharynx” locations was 9.3/100,000 for men and 0.7/100,000 for women, and incidence of “larynx” locations was 6.4/100,000 for men and 0.4/100,000 for women.ConclusionRéunion Island features some particularities in terms of incidence: women are less than half as likely as in Metropolitan France to develop any type of cancer, whereas incidence in males is among highest in France. The presentation of results in cancer registries could be improved in line with everyday practice in head and neck surgery.     

Latex allergy, a special risk for patients of otorhinolaryngology and head and neck surgery?

A total of 206 patients of the otorhinolaryngology (ORL) department and 204 of the visceral surgery department of the Ludwig Maximilians University of Munich were preoperatively evaluated for latex-specific sensitization. A prick test, a questionnaire, and an enzyme-linked immunosorbent assay immunoprecipitation for IgE antibodies were performed. Latex is a widely spread allergen, and it does not only concern healthcare populations. Within the ORL surgery group, 43 (20.9%) patients were sensitized against latex allergen, and 2 of them were reported to manifest symptoms in consorting with latex. In the cohort of visceral surgery patients, we detected only 23 patients (11.3%) with sensitization against latex. Moreover, most patients were positively detected with the skin prick test (86.4%), whereas the enzyme-linked immunosorbent assay method was less sensitive (18.3%). Patients of the ORL department were considerably more frequently exposed to latex protein particles than patients of the visceral surgery department. This difference attributes to their significant difference in mean age: 44 years in the ORL patients group versus 58 years in the visceral patients cohort. Furthermore, we did not find any correlation to the number of past operations--although undergoing any surgical procedures is a well-known risk factor in other studies about latex sensitization in surgical patients.     

Increased expression of VEGF, iNOS, IL-1β, and IL-17 in a rabbit model of gastric content-induced middle ear inflammation

Objective

To investigate the histopathological changes and the expression of vascular endothelial growth factor (VEGF), inducible NO-synthase (iNOS), endothelial NO-synthase (eNOS), interleukin (IL)-1β, and IL-17 in the rabbit middle ear mucosa after direct gastric content exposure.

Methods

Exploratory controlled study in which histological and immunochemical features were studied after gastric content-induced inflammation was established in rabbits. Sixteen healthy rabbits were divided into two equal groups. Gastric contents of an animal were injected into the middle ear of the same animal for 20 days. Saline was injected into the middle ear of the animals in the control group. The rabbits were humanely killed on day 27. Inflammation was assayed by light microscopy. Immunochemical staining was performed for VEGF, iNOS, eNOS, IL-1β, and IL-17 expression. Experimental and control animals were examined using the same protocol.

Results

The expression levels of VEGF, iNOS, IL-1β, and IL-17 differed significantly between the experimental and control groups (p = 0.018, p = 0.010, p = 0.002, and p = 0.002, respectively). The expression level of eNOS was not significantly different between the two groups (p = 0.132).

Conclusion

This study demonstrates that gastroesophagial reflux induced middle ear inflammation is associated with increased expression of VEGF, IL-1β, IL-17, and iNOS.