The Role of Biofilms in Chronic Otitis Media-Active Squamosal Disease: An Evaluative Study

2021 ◽  
Vol 42 (9) ◽  
pp. e1279-e1285
Author(s):  
Gautam Bir Singh ◽  
Sonali Malhotra ◽  
Subhash Chandra Yadav ◽  
Ravinder Kaur ◽  
Devanshu Kwatra ◽  
...  
Keyword(s):  
Otitis Media ◽  
Chronic Otitis Media ◽  
Evaluative Study

Factors associated with the development of paediatric chronic otitis media by age nine: a prospective longitudinal cohort study of 6560 children

2020 ◽  
pp. 1-12
Author(s):  
P J Clamp ◽  
K De-Loyde ◽  
A R Maw ◽  
S Gregory ◽  
J Golding ◽  
...  
Keyword(s):  
Cohort Study ◽  
Otitis Media ◽  
Maternal Education ◽  
Univariate Analysis ◽  
Chronic Otitis Media ◽  
Birth Cohort Study ◽  
Control Group ◽  
Factors Associated ◽  
Prospective Longitudinal

Abstract Objective This study aimed to analyse social, health and environmental factors associated with the development of chronic otitis media by age nine. Method This was a prospective, longitudinal, birth cohort study of 6560 children, reviewed at age nine. Chronic otitis media defined as previous surgical history or video-otoscopic changes of tympanic membrane retraction, perforation or cholesteatoma. Non-affected children were used as the control group. Results Univariate analysis demonstrated an association between chronic otitis media and otorrhoea, snoring, grommet insertion, adenoidectomy, tonsillectomy, hearing loss, abnormal tympanograms and preterm birth. Multivariate analysis suggests many of these factors may be interrelated. Conclusion The association between chronic otitis media and otorrhoea, abnormal tympanograms and grommets supports the role of the Eustachian tube and otitis media (with effusion or acute) in the pathogenesis of chronic otitis media. The role of snoring, adenoidectomy and tonsillectomy is unclear. Associations suggested by previous studies (sex, socioeconomic group, parental smoking, maternal education, childcare, crowding and siblings) were not found to be significant predictors in this analysis.

Role of anaerobes in chronic otitis media

1983 ◽  
Vol 8 (1) ◽  
pp. 47-51 ◽  
Author(s):  
G. G. BROWNING ◽  
G. PICOZZI ◽  
G. SWEENEY ◽  
I. T. CALDER
Keyword(s):  
Otitis Media ◽  
Chronic Otitis Media

The role of allergic rhinitis in suppurative chronic otitis media, prelaminary reports

2007 ◽  
Vol &NA; ◽  
pp. S77
Author(s):  
Mehdi Bakhshaee ◽  
Mohsen Rajati ◽  
Mohammad Feraydouni ◽  
Ehsan Khadivi
Keyword(s):  
Allergic Rhinitis ◽  
Otitis Media ◽  
Chronic Otitis Media

Bone Resorption in Chronic Otitis Media the Role of Mast Cells

1985 ◽  
Vol 100 (1-2) ◽  
pp. 72-80 ◽  
Author(s):  
Gilead Berger ◽  
Michael Hawke ◽  
J. Kenneth Ekem
Keyword(s):  
Mast Cells ◽  
Bone Resorption ◽  
Otitis Media ◽  
Chronic Otitis Media

Mast cells positive for cluster of differentiation 117 protein: are they players or conductor in the orchestra of cholesteatoma?

2012 ◽  
Vol 126 (8) ◽  
pp. 775-779
Author(s):  
A O Calli ◽  
A Sari ◽  
F Cakalagaoglu ◽  
A A Altinboga ◽  
C Calli ◽  
...  
Keyword(s):  
Growth Factor ◽  
Mast Cells ◽  
Otitis Media ◽  
Potential Role ◽  
Keratinocyte Growth Factor ◽  
Chronic Otitis Media ◽  
Targeted Treatments ◽  
Growth Factor Production ◽  
Cluster Of Differentiation

AbstractBackground:The pathogenesis of cholesteatoma remains unclear, despite several theories. Alterations in the density of mast cells positive for cluster of differentiation 117 protein (also known as CD117) can be critical to cholesteatoma formation, due to the effect on keratinocyte growth factor production. This study aimed to investigate the potential role of these mast cells in cholesteatoma pathogenesis.Methods:The number and density of mast cells positive for cluster of differentiation 117 protein were immunohistochemically analysed in 52 patients: 22 with chronic otitis media alone (group one), 25 with chronic otitis media with cholesteatoma (group two) and five controls.Results:The number of these mast cells was much higher in group two (in cholesteatoma matrix tissue) than in group one (in chronic otitis media granulation tissue) or the controls (in normal post-auricular skin). The density of these mast cells was significantly greater in group two than in group one or the controls (p < 0.05). The number and density of these mast cells was much greater in group one than in controls (p < 0.01).Conclusion:Mast cells positive for cluster of differentiation 117 protein could play a role in cholesteatoma formation. Further investigation of the role of these mast cells in cholesteatoma may suggest new ways of addressing this disorder, and may enable the development of targeted treatments.

The Role of Coagulase-Negative Staphylococci in Chronic Otitis Media With Effusion

1982 ◽  
Vol 90 (6) ◽  
pp. 837-843 ◽  
Author(s):  
Joel M. Bernstein ◽  
Diane Dryja ◽  
Erwin Neter
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Otitis Media With Effusion ◽  
Chronic Otitis Media ◽  
Antibiotic Sensitivity ◽  
Middle Ear Effusion ◽  
Coagulase Negative Staphylococci ◽  
Heterogenous Group ◽  
Ear Effusion

Twenty-eight middle ear effusions from 27 patients with chronic otitis media with effusion were studied for the presence of bacteria. The most common isolates were coagulase-negative staphylococci. However, biochemical and antibiotic sensitivity patterns demonstrated that these organisms represented a heterogenous group. At least three subtypes of coagulase-negative staphylococci were identified from the middle ear effusions, and in only one instance was the isolate from the ear canal identical with that of the middle ear effusion. The data presented suggest that coagulase-negative staphylococci from the middle ear effusions may not be contaminants; however, it cannot be determined from this study whether these organisms play a role as pathogens or as the result of indolent colonization.

Immunoglobulin E in Chronic Middle Ear Effusions

1978 ◽  
Vol 87 (2) ◽  
pp. 197-201 ◽  
Author(s):  
Daniel M. Lewis ◽  
James L. Schram ◽  
Herbert G. Birck ◽  
David J. Lim ◽  
Gerald Gleich
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Immunoglobulin E ◽  
Otitis Media With Effusion ◽  
Chronic Otitis Media ◽  
Causative Factor ◽  
Serum Samples ◽  
Double Antibody ◽  
Paired Serum

To investigate the possible role of allergy in otitis media with effusion (OME), the immunoglobulin E (IgE) content of 138 middle ear effusions (MEE) and paired serum samples from patients with chronic otitis media with effusion was determined. The initial 62 paired specimens were assayed for IgE by the radioimmunosorbent test (RIST), while the later 76 paired specimens were assayed for IgE by the paper radioimmunosorbent test (PRIST). When the results obtained by these two techniques were compared, it was noted that the PRIST procedure gave significantly lower IgE values for effusions than the RIST method. When the effusion-to-serum ratios (E/S ratios) were computed from the PRIST data, the E/S ratio was less than one, while RIST data gave an E/S ratio greater than one. The results obtained with the PRIST procedure were confirmed by double antibody radioimmunoassay for IgE. Thus, the PRIST procedure appears to measure the IgE content of MEE more accurately, and the results obtained by this procedure fail to support the concept of allergy as a major causative factor in OME.

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