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At least 955 records · Page 53Linked to original sources
PubMed2003

Quantitative cytokine gene expression in human tonsils at excision and during histoculture assessed by standardized and calibrated real-time PCR and novel data processing.

Real-time reverse transcription polymerase chain reaction (RT-PCR) assays were developed for the quantification of expression of the genes for human interleukin (IL)-1beta, IL-2, IL-6, IL-8, IL-10, IL-12, IL-15, interferon (IFN)-gamma, tumor necrosis factor (TNF)-alpha, transforming growth factor (TGF)-beta and for the endogenous reference hydroxymethylbilane synthase (HMBS). The assays detected as little as five plasmid copies and were 100% specific. The creation and integration of a calibration sample into the assays permitted their calibration across experiments. To handle the high number of generated data, the correlator of advanced real-time assays (CARTA) software was designed to organize samples and to automatically control and analyze TaqMan real-time RT-PCR data. The RT-PCR assays were applied to quantify levels of cytokine gene expression in human palatine tonsils at excision and during 4 days of histoculture. Similar longitudinal patterns of cytokine gene expression were observed in all donors, but the variations in spontaneous expression levels between donors were large. The expression levels in histocultures were constant over time and similar to the expression levels at excision except for IL-6 and IL-8, which markedly increased following the first 24 h of culture, possibly due to the initial stress. The standardized and calibrated RT-PCR assays quantify gene expression of human cytokines proved sensitive and specific for the investigation of cell behavior at the molecular level and the newly established CARTA software, a reliable tool for rapid data handling. Tonsil histocultures could serve as a valuable ex vivo model system for further, donor-dependent, studies on activation or repression of cytokine gene expression.

Calibration↗
PubMed2006

Post-tonsillectomy morbidity and quality of life in pediatric patients with obstructive tonsils and adenoid: microdebrider vs electrocautery.

OBJECTIVE: To prospectively compare outcomes in children over age 2 with obstructive adenotonsillar hypertrophy when tonsillectomy is performed utilizing an intracapsular microdebrider technique versus low-wattage electrocautery technique. STUDY DESIGN AND SETTING: Prospective, single-blind, randomized controlled trial at a tertiary care children's hospital. RESULTS: Among the 300 children, those treated with the microdebrider resumed normal activity faster, with a median recovery of 2.5 days, and stopped taking pain medication sooner, with the median time to the last dose of 4 days. The microdebrider group were 3 times more likely to no longer need pain medications at 3 days postoperatively and 2.5 times less likely to be still needing pain medication 7 days postoperatively. They were twice as likely to be at a normal activity level by 3 days postoperatively and were less likely to still not have attained normal activity and normal diet after 7 days. There was no difference between groups in median days to return to normal diet (3.0 to 3.5 days). At 1-month follow-up, children in the microdebrider group were 5 times more likely to have residual tonsil tissue. CONCLUSIONS: Intracapsular tonsillectomy in children with obstructive adenotonsillar hypertrophy results in improved peri-operative outcomes. Residual tonsil tissue is more common with use of the microdebrider; however, the incidence of future obstruction or infection is unknown. EBM RATING: A-1b.

Adenoidectomy↗
PubMed2002

[Report of a case: large tonsillolith in palatine tonsil].

A 69-year-old woman presented with a one-year history of dysphagia and a hard overgrowth of the right palatine tonsil visible in oral examination. Computerized Tomography scan showed a big calcified lesion inside the tonsil not seen in a pharyngoscopy. Tonsillectomy was performed and a giant tonsillolith was found inside the resected piece. The calculus was 3 x 2 x 2.3 cm and with an irregular-pyramidal shape. Normal tonsillar tissue with many colonies of Actionomyces inside the tonsillar crypts was the definitive pathological feature.

Aged↗
PubMed2005

[Metastasis in the palatine tonsil as the first sign of a gastric adenocarcinoma].

Gastric adenocarcinomas rarely give rise to metastases in the palatine tonsils; twelve such cases have been published. In two of them the tonsillar tumour was the first sign of the disease. We present a patient with a tumour of the palatine tonsil and cervical lymph node involvement who was diagnosed as having an adenocarcinoma of "signet ring" cells in the histopathology and cytology studies. Finding such cells directed us to the stomach in our search for the primary.

Carcinoma, Signet Ring Cell↗
PubMed1991

Pathology of infection caused by Dermatophilus-like organisms in porcine tonsils.

The authors investigated the occurrence of Dermatophilus-like organisms in sulphur granules of porcine tonsils. Light and electron microscopic studies, together with histochemical examination, were carried out to elucidate the mode of growth of the organism in the tonsils, the interaction between the organisms and host cells, and the nature of the radiating clubs around the organisms. Sulphur granules were found in about 15 and 70 per cent of market pigs and breeding pigs, respectively. Of the pigs having tonsillar granules, Dermatophilus-like organisms were observed in about 70 per cent of market pigs, and in nearly all breeding pigs. The organisms invaded tonsillar crypts to produce lesions resembling actinomycotic abscesses up to 5 mm in diameter. Dermatophilus-like organisms were demonstrated in various morphological forms ranging from filamentous to tuber-shaped or coccoid bodies. In the lesion, the bacterial cells adjacent to the host cell reaction showed distinct degenerative changes forming thick amorphous masses on the surface of the bacterial cells. The amorphous masses seemed to be derived from the bacterial cells but showed histochemical components different from those of the bacterial cells. These masses had numerous protrusions forming clubs. Phagocytic neutrophils close to the amorphous masses were presumed to play a role in deposition of the club material. Macrophages also appeared to participate in the inflammation leading to a granulomatous lesion. These findings suggested that the clubs might be formed by an interaction between the organisms and host cell reaction.

Abscess↗
PubMed1999

Sore throat, tonsillitis, and adenoiditis.

Diseases of the adenoids and tonsils are a frequent cause for patients to seek medical attention. A thorough understanding of the disease processes reflected in the adenoids and tonsils and their diagnosis and treatment is an important part of routine care delivery. Diagnostic methodologies and timing of surgical intervention are reviewed along with general considerations relating to the differential diagnosis in adult and pediatric patients.

Abscess↗
PubMed1982

T-lymphocyte subsets in follicular lymphomas compared with those in non-neoplastic lymph nodes and tonsils.

Using monoclonal antibodies on frozen sections, the authors define the anatomic localization of T-lymphocyte subsets in follicular lymphomas as well as in nonneoplastic lymph nodes and tonsils. The percentage of Leu-1+ T cells in the follicles of follicular lymphomas (20 per cent) was virtually identical to that seen in the follicles of nonneoplastic lymph nodes or tonsils (22 per cent). There were 50 per cent T cells in the interfollicular regions of follicular lymphomas and 75 per cent in the paracortical regions of the nonneoplastic specimens. In neoplastic follicles the number of Leu-3a+ cells was 67 per cent of the number of Leu-1+ cells, whereas, virtually the entire T-cell population in the nonneoplastic follicles expressed the Leu-3a antigen. These T cells of helper phenotype may facilitate the neoplastic process or an immune response against it or may be bystanders to the B-cell proliferation. Hum Pathol 13:618-625, 1982

Antibodies, Monoclonal↗
PubMed1998

Neurotrophins and their receptors in the pigeon caecal tonsil. An immunohistochemical study.

Neurotrophins are growth factors which bind to signal-transducing receptors called Trk proteins. The neurotrophins and their receptor proteins are present in the mammalian and avian lymphoid organs, thus suggesting that these factors could act upon cells of the immune system. Nevertheless, little is known about the cellular distribution of neurotrophins and their receptor proteins in avian lymphoid tissues. In this study we use immunohistochemistry to detect the cellular localisation of neurotrophins and their receptor proteins in the pigeon caecal tonsil, used as a model for avian secondary lymphoid organs. Rabbit polyclonal antibodies against neurotrophins (nerve growth factor -NGF-, brain-derived neurotrophic factor -BDNF- and neurotrophin -3 NT-3-) and against specific epitopes of TrkA, TrkB and TrkC proteins were used. Cytokeratins, vimentin, S-100 protein and chromogranin A were studied in parallel to identify cells which seemed to express neurotrophins and Trk proteins. TrkA-like protein was seen in the intestinal epithelium, whereas TrkB-like and TrkC-like proteins was found in cells which we identified as dendritic cells and macrophages. BDNF-like and NT-3-like reactivity was localised in intestinal epithelial cells, especially endocrine cells. Present results add further evidence to the presumptive immune role of neurotrophins and their receptors and the possible functions of these peptides in the caecal tonsil are discussed.

Animals↗
PubMed2002

Spontaneous resolution of recurrent tonsillitis in pediatric patients on the surgical waiting list.

OBJECTIVE: To assess the impact of the waiting list on the spontaneous resolution of recurrent acute tonsillitis in children. METHODS: We have evaluated 623 cases placed on the waiting list for elective tonsillectomy (with or without adenoidectomy) between February 1994 and May 1999 at our institution. In each child, age, time on the waiting list, type of procedure and outcome were registered. There were two possible outcomes after the preoperative evaluation: tonsillectomy was still indicated or tonsillectomy was not necessary. RESULTS: Mean length of time on the waiting list was 10.8 months (range: 3.0-35.6 months; median: 8.2 months). In 507 of the 623 children (81.4%), the operation was still indicated. However, 116 patients (18.6%) did not need surgery because of spontaneous resolution of the clinical picture. No relation was found between outcome and age, time on the waiting list or type of procedure (P>0.05). CONCLUSION: There was no clinical evidence for claiming that resolution of recurrent acute tonsillitis in children is spontaneous with time.

Child↗
PubMed1985

Obstructive hypertrophic adenoids and tonsils as a cause of infantile failure to thrive: reversed by tonsillectomy and adenoidectomy.

Isolated failure to thrive in an infant caused by chronic hypoventilation due to hypertrophic adenoids and tonsils, has not been previously described. A 9 month-old infant presented with weight loss and mild clinical respiratory signs. Hypoxemia and CO2 retention, however, were documented by transcutaneous gas measurement, and ENT examination revealed enlarged tonsils and adenoids. Adenoidectomy and tonsillectomy at 9 1/2 months of age completely reversed the patient's hypoventilation and growth pattern. While the exact mechanism of failure to thrive secondary to upper airway obstruction in infancy is not clear, we conclude that routine ENT evaluation should be a regular part of the workup of infants under one year who suffer from failure to thrive.

Adenoidectomy↗
PubMed1998

Melatonin restores and enhances the human type B tonsillar lymphocyte subset in recurrent acute tonsillitis.

Tonsils have a privileged situation in the immune system in that they are in touch with the environment. Melatonin is a hormone that is influenced by the circadian environmental variations of dark-light and is a modulator of the immune system. We have studied a group of thirty five children with recurrent acute tonsillitis that were submitted for tonsillectomy. Tonsillar lymphocyte subsets were determined before and after culture through flow cytometry in a tonsillar mononuclear suspension. After the culture, the lymphocyte subsets of type B suffered a decrease that was restored in the presence of melatonin or phytohemaglutinin, and even increased above the values of the control when the culture was accomplished in the presence of both substances. This process was specific for B cells, no occurrence for T lymphocytes or natural killer cells. Melatonin is found in the crossroads of the interaction of the microorganisms, pollens or inert substances with the tonsillar lymphocytes in the production of the immune defences. Further study is required on tonsillar pathology to explain its physiopathology and its possible therapeutic role.

Acute Disease↗
PubMed1997

Acute lingual tonsillitis.

A 45-year-old woman presented to the emergency department (ED) with a 3-day history of fever, progressive sore throat, dysphagia, and difficulty speaking. She was diagnosed with acute lingual tonsillitis. The ED physician must consider this rarely discussed disorder when presented with the previously mentioned signs and symptoms. This will allow for prompt diagnosis and treatment of acute lingual tonsillitis and may help to avoid potential airway compromise.

Acute Disease↗
PubMed2001

The role of beta-lactamase producing bacteria and bacterial interference in streptococcal tonsillitis.

The causes of penicillin failure in eradicating group A beta-haemolytic streptococcal pharyngo-tonsillitis are described. The mechanisms accounting for the failure include the presence in the tonsils of beta-lactamase producing bacteria and the absence of bacterial interference. The use of antimicrobials that can overcome and modulate these two phenomena and achieve better cure of the infection is described.

Anti-Bacterial Agents↗
PubMed2001

[Treatment of acute group A beta-hemolytic streptococcal tonsillitis in children with a 5-day course of josamycin].

MATERIAL AND METHODS: In this randomized open study, 325 children aged two to 15 years with acute tonsillitis and a positive test of GA beta H streptococcal antigen were treated with josamycin 50 mg.kg-1.day-1 b.i.d for 5 days, or penicillin 50,000 to 100,000 IU/day t.i.d for 10 days. Clinical assessments and throat cultures for GA beta HS isolation were performed at the inclusion visit (V1), at the end of treatment visit (V2: day 12 for all patients) and at the follow-up visit (V3: day 30). In case of positive GA beta HS culture, the bacterial DNA by RFLP was performed to differentiate between the persistence (presence of original strain at V2), relapse (eradication at V2 and acquisition of same strain at V3) and reinfection (eradication at V2 and acquisition of different strain at V3). RESULTS: Two hundred and twenty-three patients were included in the bacteriological and clinical criteria per protocol analysis. At V2, eradication rates were comparable: 82% in josamycin and 80% in penicillin patients; clinical cure rates were 90% and 89%. At V3, relapse of GAS assessed only on clinically and bacteriologically cured patients at V2 occurred in 12% of josamycin patients and 12.8% of penicillin patients. Tolerance was good; 14% and 10% of josamycin and penicillin patients respectively experienced an adverse event. CONCLUSION: In this non-inferiority study, the efficacy of a 5-day course of josamycin is comparable to reference treatment in GA beta HS tonsillitis in children.

Acute Disease↗
PubMed1980

Serum immunoglobulins in patients with chronic tonsillitis.

In this work, the serum immunoglobulin (IgG, IgA, IgM and IgD) levels were determined in ten patients with chronic tonsillitis. The serum immunoglobulins were estimated before and two months after tonsillectomy, using the radial immuno-diffusion method. Ten normal individuals with intact tonsils were chosen as a control group. The patients had elevated serum levels of IgG and IgA. These high levels may be due to repeated antigenic stimulation. The IgM and IgD were not significantly higher than in the normal controls. The serum IgG level did decrease significantly following tonsillectomy; the other three immunoglobulins were reduced, but insignificantly. The fall in immunoglobulins may be due to a reduction in the antigenic load, to the removal of immunoglobulin-producing tissue, or to alteration in the oropharyngeal pathogenic bacteria. Tonsillectomy does not seem to compromise immunological integrity or the immunoglobulin-producting apparatus. Estimations of the serum immunoglobulin, or simply of IgA, may help us to select those candidates for adeno-tonsillectomy who will have a good prognosis, or at least to exclude those with an underlying sub-clinical immunodeficiency disease.

Adolescent↗
PubMed1990

Infectious mononucleosis complicated by lingual tonsillitis.

Although upper airway obstruction and superimposed infection are well-known complications of infectious mononucleosis, lingual tonsillitis in this context has not been mentioned in the literature. We describe a case of acute bacterial lingual tonsillitis with airway obstruction complicating infectious mononucleosis. The role of the base of tongue region in the pathophysiology of infectious mononucleosis is discussed.

Acute Disease↗
PubMed1993

Polypoid lipoma of the palatine tonsil.

A polypoid, pedunculated tumour of the left palatine tonsil was incidentally detected in a 42-year-old female. It was composed of mature fat and was covered by a nonkeratinizing squamous epithelium with an underlying rim of fibrous tissue. The literature on tonsillar lipoma is reviewed and the differential diagnosis of polypoid lesions of the tonsil is discussed.

Adult↗
PubMed1995

Lemierre syndrome--a forgotten complication of acute tonsillitis.

Lemierre syndrome, also known as postanginal sepsis, is an illness characterized by the development of a fusobacterial septicaemia with multiple metastatic foci following an attack of acute tonsillitis. It typically affects previously healthy adolescents and young adults who, following an attack of sore throat, become acutely ill with hyperpyrexia, rigors and multiple metastatic abscesses. The clinical picture tends to vary widely because of the possible involvement of a number of body systems and organs in the disease process. This serious complication of oropharyngeal sepsis had a mortality rate in excess of 90 per cent in the pre-antibiotic era. Although now rarely seen and often forgotten, it remains a potentially life-threatening condition. We present four cases of post-tonsillitis fusobacterial septicaemia to illustrate the variability of the clinical presentation and stormy clinical course frequently associated with this rare syndrome.

Acute Disease↗