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PubMed2005

Characterization of the immunological features of tuberculous pericardial effusions in HIV positive and HIV negative patients in contrast with non-tuberculous effusions.

OBJECTIVE: To investigate the immunopathogenesis of pericardial tuberculosis (TB) and the influence of human immunodeficiency virus (HIV) on the anti-tuberculous immune response. DESIGN: Consecutive patients presenting with large pericardial effusions were subjected to a full clinical examination and pericardiocentesis. Aspirated fluid was sent for biochemistry, differential leukocyte count, flow cytometric analysis and determination of cytokine levels. Pericardial tissue was sent for TB culture and histopathological evaluation. Diagnoses were made according to pre-determined criteria. RESULTS: Fifty-six patients were included and divided into HIV positive TB (n = 22), HIV negative TB (n = 21) and non-tuberculous effusions (n = 13). Peripheral blood neutrophil, lymphocyte and monocyte counts were significantly lower in HIV positive TB patients. Lymphocytes were the dominant cell type in tuberculous pericardial effusions. CD4+ cells dominated in HIV negative tuberculous effusions, whereas CD8+ cells dominated in HIV positive TB. The difference in the concentration of IFN-gamma levels in the tuberculous and non-tuberculous pericardial effusions was statistically significant. Despite significant differences in pericardial CD4+ cell counts, IFN-gamma levels were similarly elevated in HIV negative and HIV positive tuberculous effusions. Highest levels of pericardial IL-10 were observed in samples associated with least tissue necrosis, suggesting the possibility of a tissue protective immunoregulatory role for IL-10. CONCLUSIONS: Tuberculous pericardial effusions result from a T helper1 (Th1)-dominant immune response. IFN-gamma producing CD4+ lymphocytes dominate in HIV negative patients, whereas CD8+ seem to play a more important role in HIV positive patients. Infection with HIV leads to the depletion of immunocompetent cells such as monocytes, NK cells and neutrophils.

AIDS-Related Opportunistic Infections↗
PubMed2000

Carbohydrate antigen expression in primary tumors, metastatic lesions, and serous effusions from patients diagnosed with epithelial ovarian carcinoma: evidence of up-regulated Tn and Sialyl Tn antigen expression in effusions.

The object of this study was the investigation of carbohydrate antigen expression in malignant epithelial cells and benign mesothelial cells in serous effusions from patients diagnosed with epithelial ovarian carcinomas. In addition, to compare antigen expression in carcinoma cells in effusions with those of corresponding primary tumors and metastatic lesions. Sections from 63 malignant effusions from ovarian carcinoma patients and 15 reactive effusions were immunohistochemically stained, using 5 monoclonal antibodies for Lewis(y), Sialyl Lewis(x), Tn, and Sialyl Tn antigens. Tissue sections (n = 97) from corresponding primary ovarian carcinomas and metastatic lesions, as well as from 12 malignant mesotheliomas, were additionally stained using the above panel. Staining for the 4 antigens was seen in carcinoma cells in serous effusions in the majority of cases (range = 71% to 85%). In contrast, immunoreactivity was detected in mesothelial cells in only 6% to 23% of the specimens studied (P < .001 for all 5 markers). With the exception of B3 antibody against Lewis(y) antigen, malignant mesotheliomas stained negative, infrequently showing focal immunoreactivity. An up-regulation of Tn and Sialyl Tn expression was detected in carcinoma cells in effusions when compared with both primary tumors (P < .003 and P < .007, respectively) and metastatic lesions (P < .034 and .041, respectively). Cancer-associated carbohydrate antigens can thus be used as an adjunct in the differentiation between malignant epithelial and reactive mesothelial cells. Ovarian carcinoma cells in effusions show up-regulation of Tn and Sialyl Tn, possibly representing a transient phenotypic alteration facilitating metastasis.

Antigens, Tumor-Associated, Carbohydrate↗
PubMed2003

Clinical evaluation of HER-2/neu protein in malignant pleural effusion-associated lung adenocarcinoma and as a tumor marker in pleural effusion diagnosis.

PURPOSE: Lung adenocarcinoma presenting as malignant pleural effusion (MPE) is common in Taiwan. Microscopically, the involved pleurae are infiltrated by numerous tumor foci, which suggests that the cancer cells are highly invasive. Overexpression of HER-2/neu has been related to proliferation, antiapoptosis, and the high invasiveness of various cancer cells. We therefore were interested in studying the role of HER-2/neu in MPE-associated adenocarcinoma cell lung cancer (ADCLC). EXPERIMENTAL DESIGN: The expression of HER-2/neu in pleural effusion was measured by ELISA. The HER-2/neu protein expression on tumor cells was evaluated by immunohistochemical (IHC) staining, and gene amplification was assayed by fluorescence in situ hybridization. RESULTS: The mean value of HER-2/neu in pleural effusions of patients with ADCLC and other nonmalignant lung diseases was 9.9 and 2.7 ng/ml, respectively. The difference is statistically significant (P < 0.001). Compared with cytokeratin 19 fragment CYFRA 21-1, the performance of HER-2/neu as a tumor marker in pleural effusion diagnosis was better. Overexpression of HER-2/neu in tumor tissues was found in 70% (23 of 32) of patients with MPE-associated ADCLC, 30% (13 of 43) with stage I/II non-small cell lung cancer (NSCLC), and 44% (14 of 32) with stage III NSCLC. The incidence of HER-2/neu overexpression in tumor tissues of patients with MPE-associated ADCLC was significantly higher than that of patients with stage I-III NSCLC without MPE. HER-2/neu gene amplification was uncommon (1.9%). The correlation between the IHC H-score in tumor samples and the pleural effusion level of HER-2/neu was significant (P < 0.01). A higher incidence of HER-2/neu expression beyond the cutoff point (5.5 ng/ml) in pleural effusions was also found in patients whose IHC H-scores were >50. CONCLUSIONS: These findings indicate that HER-2/neu is important in the pathogenesis of MPE-associated ADCLC and is a potential tumor marker for a diagnosis of pleural effusion.

Adenocarcinoma↗
PubMed2000

Oral or topical nasal steroids for hearing loss associated with otitis media with effusion in children.

BACKGROUND: OME is common and may cause hearing loss with associated developmental delay. Treatment remains controversial. The effect of both systemic and intra-nasal steroids on effusions has been assessed by randomised controlled trials. OBJECTIVES: To examine evidence for or against treating children with hearing loss associated with OME with systemic or topical nasal steroids. SEARCH STRATEGY: Searches were conducted in February 2000. We searched the Cochrane Controlled Trials Register using the terms 'otitis-media', 'otitis media with effusion', 'glue ear', or 'OME', and 'steroids', 'glucocorticoids, synthetic', 'glucocorticoids, topical', 'anti-inflammatory agents, steroidal'. EMBASE and MEDLINE were also searched for additional information. SELECTION CRITERIA: Randomised controlled trials of oral and topical nasal steroids, either alone or in combination with another agent such as an antibiotic, were included. EXCLUSIONS: publications in abstract form only since adequate appraisal was not possible; uncontrolled, non-randomised or retrospective studies; studies reporting outcomes with ears (rather than children) as the unit of analysis. DATA COLLECTION AND ANALYSIS: Data were extracted from the published reports by the two authors independently (CCB and JH van der V) using standardised data extraction forms and methodology. The methodological quality of the included studies were independently assessed by the two authors using the scheme described in the Cochrane Handbook. Dichotomous results were expressed as an odds ratio using a fixed effects model together with the 95% confidence intervals. Continuous data were analysed using the weighted mean difference in a fixed effects model. Tests for heterogeneity between studies were performed using a Mantel-Haenszel approach. In trials with a cross over design, post-crossover treatment data were not used. MAIN RESULTS: No study prospectively documented hearing loss associated with OME prior to randomisation. Follow up was short term. No serious or lasting side effects were reported in the four studies that did mention side effects. Most comparisons involved small numbers of subjects. The odds ratio for OME persisting after short term follow up for children treated with oral steroids plus antibiotic compared to control plus antibiotic was 0.32 (95% CI 0.20 to 0.52). However there was significant heterogeneity between studies (p<0.01). Trends favoured steroids for most other comparisons, but confidence intervals included unity. There was no evidence of benefit for steroid treatment in the longer term, and no study assessed effect of steroid treatment on language development. REVIEWER'S CONCLUSIONS: There is evidence that steroids combined with an antibiotic lead to a quicker resolution of OME in the short term. However, there is not evidence for long term benefit from treating hearing loss associated with OME with either oral or topical nasal steroids. These treatments are therefore not recommended at the present time. Future studies should document hearing loss associated with OME before the start of study treatment. Follow up should be longer and ideally include symptom, audiometry and developmental outcomes. Data should not be presented with ears as the unit of analysis.

Administration, Intranasal↗
PubMed2006

Delayed effusive pericarditis and recurrent pleural effusion after radiation treatment for Hodgkin's disease responsive to per os doxycycline.

We present our experience with a patient with effusive pericarditis and recurrent pleural effusion that first developed 23 yr after radiation treatment for the nodular sclerosis type of Hodgkin's disease. Extensive diagnostic work up including pericardial and pleural biopsy, excluded any other cause (than radiation) of the recurrent pleural effusion. Pericarditis and pleural effusion were not controlled with regimens including steroid and non-steroid anti-inflammatory agents. The fluid collections improved only with per os doxycycline (100 mg twice a day). Four episodes of recurrent pleural effusions were also controlled with per os doxycycline. Although the concentration of doxycycline in the pericardial and pleural fluid when given orally is smaller compared with that achieved by direct installation of the agent, the fact that all episodes of pleural effusion improved with an agent commonly used for pleurodesis is intriguing.

Administration, Oral↗
PubMed2001

Primary pleural effusion posttransplant lymphoproliferative disorder: Distinction from secondary involvement and effusion lymphoma.

Pleural effusion presentation of posttransplant lymphoproliferative disorder (PTLD) is relatively uncommon. Most examples of effusion-based PTLD have been secondary to widespread solid organ involvement, and are associated with an aggressive clinical course. We report on a case of primary effusion PTLD in a 70-yr-old male liver transplant recipient with a history of hepatitis B infection. Cytomorphologically, the pleural fluid specimen showed a monomorphous population of intermediate to large-sized transformed lymphoid cells, with irregular multilobated nuclear contours and readily identifiable mitotic figures. Flow cytometric immunophenotypic studies revealed a CD5-negative, CD10-negative, lambda immunoglobulin light chain-positive, monoclonal B-lymphocyte (CD19-positive/CD20-positive) population. The immunocytochemical stain for CD30 antigen was negative. In situ hybridization study for Epstein-Barr virus (EBV) early RNA (EBER) and Southern blot analysis for EBV terminal repeat sequences were both positive. Southern blot analysis for human herpes virus-8 (HHV-8) was negative. No solid-organ PTLD was identified, and the cytologic results supported the diagnosis of primary effusion PTLD. Immunosuppression was decreased, and 8 mo following the diagnosis of pleural fluid PTLD, the patient was stable and his pleural effusion had markedly diminished. Recognition of primary effusion PTLD and its distinction from PTLD secondarily involving the body fluids and from other lymphomas is important, since the behavior and prognosis appear different.

Aged↗
PubMed1990

Viscoelastic properties of middle ear effusions from pediatric otitis media with effusion and their relation to gross appearance.

The viscosity and the elasticity were measured in 146 individual middle ear effusions (MEEs) from 93 children with otitis media with effusion (OME). The effusions were classified into serous or mucoid type by their macroscopic appearance. The distribution of elasticity showed two peaks, corresponding to the peaks of serous and mucoid types of effusions. There were a small number of effusions in the intermediate range of elasticity, where the effusions were most effectively transported by the cilia. These findings suggests that the MEEs of pediatric OME are accumulations of rheologically suboptimal fluid in the middle ear cavity.

Child↗
PubMed1995

Effect of body position on gas exchange in patients with unilateral pleural effusion: influence of effusion volume.

The objective of this study was to evaluate the effect of lateral body position on gas exchange in patients with unilateral pleural effusion, with special reference to the influence of effusion volume. Thirty consecutive patients with unilateral pleural effusion, without evidence of parenchymal pulmonary involvement, were entered into the study. Arterial blood gas tensions (PaO2, PaCO2) were randomly measured in both right and left lateral decubitus body positions, while breathing room air. To assess the influence of the effusion volume, roentgenographic and functional parameters were used. Among the latter, FVC, FEV1, TLC and RV were determined. The influence of the presence or absence of pleuritic pain on gas exchange was also assessed. There was no significant difference in PaCO2 between right and left lateral decubitus body positions (31.1 +/- 4.2 vs. 31.0 +/- 4.5 mmHg). The differences in PaO2 between the two body positions ranged from 0.5-25 mmHg (mean 9.3 +/- 6.6 mmHg). Mean PaO2 with the normal-side (control) down (PaO2-N) (81.4 +/- 8.5 mmHg) was higher, but without significant statistical difference, than mean PaO2 with the effusion-side down (PaO2-E) (78.0 +/- 12.5 mmHg). PaO2-N was higher than PaO2-E in 22 of 30 patients (conventional), and lower in eight patients (paradoxical). No consistent relationship was found for alterations in PaO2 in different positions with the volume of effusion, either when estimated by a roentgenographic method or when using spirometric or plethysmographic values.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed2006

Level of antibodies against mycobacterial glycolipid in the effusion for diagnosis of tuberculous pleural effusion.

BACKGROUND: Diagnosing tuberculous pleural effusion (pTB) is often difficult because the culturing of tubercle bacilli results in a negative test in the majority of cases. Serological tests for the detection of antibodies to tuberculous glycolipid (TBGL) and lipoarabinomannan (LAM) have been introduced for the diagnosis of pulmonary tuberculosis. We examined the levels of these antibodies, adenosine deaminase (ADA) and interferon-gamma (IFN-gamma) in the pleural effusion and compared their diagnostic values in pTB. METHODS: We studied 65 patients with pleural effusion. Of those, 19 patients were diagnosed as having pTB according to our broad case definition. The etiologies in the other 46 patients were malignant effusion, transdative effusion and miscellaneous diseases. Determiner TBGL antibody (D-TBGL-Ab) and MycoDot were used for the detection of anti-LAM and anti-TBGL antibodies, respectively, in the pleural effusion. RESULTS: The sensitivity of ADA was 78.9% (15/19) and the specificity 97.8% (45/46). The sensitivity of IFN-gamma was 84.2% (16/19) and the specificity 93.5% (43/46). The sensitivities of D-TBGL-Ab and MycoDot were both 52.6% (10/19) and their specificities were 95.7% (44/46) and 97.8% (45/46), respectively. When DTBGL-Ab (cutoff point: 2.0 U/ml) and ADA activity (cutoff point: 57 IU/l) were combined, the sensitivity was 94.7% (18/19) and the specificity 93.5% (43/46). CONCLUSIONS: In the diagnosis of pTB, D-TBGL-Ab and MycoDot each have low sensitivity but high specificity. When D-TBGL-Ab is used in combination with ADA, the sensitivity and specificity are both >90%. We conclude that D-TBGL-Ab and ADA in combination are useful in the diagnosis of pTB.

Adenosine Deaminase↗
PubMed1990

Viscosity of effusion in the middle ear and eustachian tube in patients with otitis media with effusion.

The viscosity of middle ear effusion (MEE) in the tympanic cavity and in the bony portion of the eustachian tube (ET) was compared in 11 specimens (10 patients) with otitis media with effusion (OME). Twenty microliters of effusion from the bony portion of the ET was sampled through myringotomy on the anterosuperior quadrant of the tympanic membrane with a micro-syringe with a curved needle. MEE in the hypotympanum was also sampled by separately puncturing the posteroinferior quadrant of the tympanic membrane. Using the microviscometer developed by one of the authors, the relative viscosity of these effusions were measured, and their natural logarithmic values were compared between the two sites mentioned above in each patient by obtaining their ratios (ET/ME). Effusion was found to have a significantly higher viscosity in the bony portion of the ET than in the hypotympanum (paired t-test: t = 3.859, p less than 0.01). In two patients with OME (serous mastoiditis) due to radiation to the temporal region, the ratios of the viscosity were comparatively small. On the other hand, excluding these two patients with serous mastoiditis mentioned above, the ratios were highest in two patients with a history of more than 60 days of hearing loss. These results were considered to be a clue to the possibility that viscous effusion aggravates ET function as a result of OME.

Adult↗
PubMed1998

Soluble adhesion molecules in middle ear effusions from patients with chronic otitis media with effusion.

Soluble forms of intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) have been identified in the peripheral blood and other body fluids. These soluble adhesion molecules have been reported to reflect the upregulation of cell surface ICAM-1 and VCAM-1 expression in inflammatory diseases. The levels of soluble ICAM-1 and soluble VCAM-1 in 37 middle ear effusions from 37 patients with chronic otitis media with effusion (OME) were quantitatively determined with enzyme-linked immunosorbent assays. The levels of soluble ICAM-1 in mucoid effusions were significantly higher than those in serous effusions, but the levels of soluble VCAM-1 did not differ significantly between the two types of effusion. The levels of soluble VCAM-1 in effusions from atopic patients were significantly higher than those from non-atopic patients, whereas the levels of soluble ICAM-1 in samples from atopic patients were significantly lower than those from non-atopic patients. Therefore, our data suggest that an increase in soluble VCAM-1 plays a more important role in the pathogenesis of OME in atopic patients than in non-atopic patients. In addition, soluble ICAM-1 is likely to play a more important role in the pathogenesis of OME in nonatopic patients than soluble VCAM-1.

Adult↗
PubMed1997

Compositional differences between bilateral middle ear effusions in otitis media with effusion: evidence for a different etiology?

The aim of this study was to clarify the site of primary pathology in otitis media with effusion. Effusions were collected from 64 children with bilateral effusions at the time of myringotomy. The rheological properties and biochemical compositions of effusions were measured for 23 pairs of effusions, and the levels of the inflammatory mediators TNF alpha, IL-1beta, and IL-8 were measured in 41 pairs using specific enzyme-linked immunosorbent assays (ELISAs). Measurements from paired ears were compared using analysis of variance (ANOVA) tests and significant differences were found for reduced specific viscosity, mucin content, protein content, and levels of IL-8. The results demonstrate that the two ears have different immunological processes or rates of processes which might explain the significantly different rheological properties of effusions. This suggests that each ear undergoes pathological changes independently and has implications for using the opposite ear as a control in clinical trials.

Analysis of Variance↗
PubMed2006

Comparison of human herpes virus 8 related primary effusion lymphoma with human herpes virus 8 unrelated primary effusion lymphoma-like lymphoma on the basis of HIV: report of 2 cases and review of 212 cases in the literature.

BACKGROUND: Primary lymphomatous effusion is a rare lymphoma that arises in the body cavity and has a peculiar proliferative form, lacking a tumor. This primary lymphomatous effusion includes human herpes virus 8 (HHV8)-related primary effusion lymphoma (PEL) and HHV8-unrelated PEL-like lymphoma. We attempted to clarify the nature of the primary lymphomatous effusion. METHODS: Using 'PEL' and 'body cavity-based lymphoma' (BCBL) as key words, reports written in English were collected from PubMed. Primary lymphomatous effusion was defined as BCBL with primary effusion and without tumor at onset. Adding our 2 PEL-like lymphoma cases, each case was studied as to the patients' and lymphomas' characteristics, therapy and survival time. Moreover, each item was compared among four groups according to the presence of HHV8 and HIV. RESULTS: In 214 cases investigated, there was no difference in proliferation, but an apparent difference in age, gender, phenotype, effectiveness and prognosis among the four groups. CONCLUSIONS: Both PEL and PEL-like lymphoma are thought to be characterized by a peculiar proliferation, regardless of the presence of HHV8. Dividing PEL or PEL-like lymphoma into two subgroups on the basis of HIV presentation might also be appropriate.

Aged↗
PubMed1999

[Intrapleural administration with OK-432 and cultured autologous pleural effusion lymphocytes for breast cancer patients with malignant pleural effusions: analysis of 84 patients over a 14-year period].

Autologous effusion lymphocytes cultured for 9-13 days with condition medium containing T cell growth factor were transferred after intrapleural administration with a streptococcal preparation, OK-432, for 84 breast cancer patients with cytologically-confirmed malignant pleural effusion. Effusion disappeared in 54 and decreased in 19 patients, while in 11 the treatment was ineffective (87% response). A positive cytology changed to negative in 52 of 55 (95%) of the patients tested, while in 29 patients, effusion sample could not be obtained after treatment. A multivariate analysis of prognostic factors showed a significantly poorer prognosis in patients with the following concomitant metastases: liver metastasis, lung metastasis with lymphangitis carcinomatosa, and simultaneous bilateral effusions. Median survival time (MST) of all patients was 9 months (5-year survival: 18%). However, MST of the patients with limited disease (patients without liver metastasis, lymphangitis, or bilateral effusion) was 23 months (5-year survival: 28%). Ten patients survived more than 5 years (3 survived over 10 years) after the treatment among 46 patients with follow-up periods of > 5 years.

Adult↗
PubMed2004

Characterization of effusion-infiltrating T cells: benign versus malignant effusions.

PURPOSE: While naïve T cells circulate between peripheral blood and lymph nodes, memory effector T cells acquire certain surface molecules that enable them to travel to peripheral tissues and exert their effector function. We analyzed whether deficient numbers of effector-type T cells within the malignant effusion might contribute to tumor escape from immunosurveillance. EXPERIMENTAL DESIGN: We analyzed the expression of a broad range of adhesion molecules and chemokine receptors (CD62L, CD56, CCR4, CCR5, CCR7, CXCR3, CLA, and integrin alpha 4 beta 7) on tumor-associated lymphocytes in effusions and peripheral blood lymphocytes of patients with malignant ascites (n = 11) or malignant pleural effusion (n = 16). A tumor-associated lymphocyte:peripheral blood lymphocyte ratio was calculated as an indicator for homing of lymphocytes into the effusions and was compared with patients with nonmalignant ascites (n = 17). RESULTS: Patients with malignancies show an increased enrichment of T cells expressing the phenotype of "naïve" (CD62L+ and CD45RA+CCR7+), "central memory" (CD45RA-CCR7+), and type 2-polarized (CCR4+) T cells within their effusions. In contrast, enrichment of "effector"-type (CD45RA-CCR7- or CD45RA+CCR7-) and presumably type 1-polarized T cells (CCR5+) at the tumor site is deficient. The same is true for natural killer cells and potentially cytotoxic CD56+ T cells. CONCLUSIONS: Here we show for the first time that patients with malignant effusions show a deficient enrichment of T cells expressing the phenotype of type-1-polarized effector T cells at the tumor site. This mechanism is likely to contribute to the escape of tumor cells from immunosurveillance.

CD4-Positive T-Lymphocytes↗
PubMed2003

The incidence of diastolic right atrial collapse in patients with pleural effusion in the absence of pericardial effusion.

The aim of this study was to describe the incidence of cardiac chamber collapse assessed by echocardiography and explore possible mechanisms in a clinical population of 116 patients with pleural effusion in the absence of pericardial effusion. We found that the frequency of chamber collapse was 18% in patients with pleural effusion in the absence of pericardial effusion, thus cardiac chamber collapse occurs in patients with pleural effusion.

Aged↗
PubMed2002

[Thoracoscopic video-assisted talcum pleurodesis (TTP)--effective treatment of malignant pleural effusion].

INTRODUCTION: Aim of the palliative therapeutic procedure should be a fast, efficient and pain free treatment of the malignant pleural effusions. PATIENTS AND METHOD: Since 1995 the results of malignant pleural effusions treatment were analyzed retrospectively in 46 patients who underwent 51 video-assisted TTP. The most frequent origin of malignant pleural effusion was breast cancer, followed by bronchial carcinoma. Precondition for video-assisted TTP was the verification of a malignant pleural effusion by cytology. RESULTS: Following TTP one patient suffered from pneumonia, two recurrent diseases occurred. Four patients died due to their severe primary malignancy. Average hospitalization was 8 days (3-55). CONCLUSION: Video-assisted TTP is the standard procedure in palliative treatment of malignant pleural effusion; the recurrence rate is low and the technique minimal invasive.

Adult↗
PubMed1996

Association of otitis media with effusion and allergy as demonstrated by intradermal skin testing and eosinophil cationic protein levels in both middle ear effusions and mucosal biopsies.

This study was performed to ascertain the role of allergy, as defined by skin testing and histochemical markers, in the pathogenesis of otitis media with effusion (OME). A historical perspective of allergy as it relates to OME is presented. The study included 89 patients: 48 with persistent effusion but no recent acute infection, 25 with purulent OME complicated by a superimposed infection, and 16 control subjects. All 89 patients had persistent effusion for more than 2 months and subsequently required the placement of tympanostomy tubes. Allergy was defined using the radioallergosorbent test (RAST), serum immunoglobulin E (IgE) levels, and skin tests. Allergies were present in 97% of the patients with nonacute OME. The relationship between allergy and OME was corroborated clinically in 89% of patients and was also substantiated by elevated levels of effusion eosinophil cationic protein (ECP) in 87.5% of OME patients. Histologically, polyclonal antibody staining for ECP demonstrated the presence of eosinophils in middle ear mucosal biopsy specimens. This study confirms that OME is a sign of allergic inflammation in the middle ear that is associated with an increase in eosinophils and a concomitant release of ECP into the effusion in individuals with allergy demonstrated by skin testing.

Adolescent↗