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PloS One 2023Palatine tonsils (PT) are B cell-predominant lymphoid organs that provide primary immune responses to airborne and dietary pathogens. Numerous histopathological and...
Palatine tonsils (PT) are B cell-predominant lymphoid organs that provide primary immune responses to airborne and dietary pathogens. Numerous histopathological and immunological studies have been conducted on PT, yet no investigations have been conducted on its metabolic profile. We performed high-resolution magic angle spinning nuclear magnetic resonance spectroscopy-based metabolic profiling in 35 pediatric and 28 adult human palatine tonsillar tissue samples. A total of 36 metabolites were identified, and the levels of 10 metabolites were significantly different depending on age. Among them, partial correlation analysis shows that glucose levels increased with age, whereas glycine, phosphocholine, phosphoethanolamine, and ascorbate levels decreased with age. We confirmed the decrease in immunometabolic activity in adults through metabolomic analysis, which had been anticipated from previous histological and immunological studies on the PT. These results improve our understanding of metabolic changes in the PT with aging and serve as a basis for future tonsil-related metabolomic studies.
Topics: Humans; Child; Adult; Palatine Tonsil; Aging; B-Lymphocytes; Metabolomics
PubMed: 37523386
DOI: 10.1371/journal.pone.0288871 -
Romanian Journal of Morphology and... 2015The human palatine tonsils represent a mucosa-associated lymphoid tissue with a significant function in mucosal protection against alimentary and airborne pathogens. The...
The human palatine tonsils represent a mucosa-associated lymphoid tissue with a significant function in mucosal protection against alimentary and airborne pathogens. The ultrastructure of different morphological compartments in the human palatine tonsil was studied in eighteen tonsils obtained from the patients who had undergone elective tonsillectomy due to chronic tonsillitis. The tonsillar specimens were analyzed by scanning and transmission electron microscopy. The results showed the presence of tight junctions between superficial epithelial cells of the oropharyngeal tonsillar surface. The crypt epithelium is a sponge-like structure infiltrated by non-epithelial cells, mostly lymphocytes, and is characterized by the presence of small pores - microcrypts occupied by large microvillus cells and/or lymphocytes. Antigen-presenting Langerhans cells with typical intracytoplasmic Birbeck granules were also found in the crypt epithelium. The lymphoid follicles are composed of lymphocytes and two types of non-lymphoid follicular cells: small fibroblast-like cells and large cells, morphologically consistent with antigen-bearing follicular dendritic cells or macrophages. The interfollicular areas consisted of a dense network of reticular cells and reticular fibers; many lymphocytes were interspersed between the reticular fibers. In addition to arterioles and high endothelial venules in the interfollicular lymphoid tissue, some fenestrated capillaries were seen intraepithelially and subepithelially. The complex ultrastructure of the human palatine tonsil provides a microenvironment necessary for antigen uptake, antigen processing and immune response.
Topics: Adult; Epithelium; Humans; Lymphoid Tissue; Palatine Tonsil; Young Adult
PubMed: 26193201
DOI: No ID Found -
British Journal of Hospital Medicine... Dec 2022
Topics: Humans; Palatine Tonsil; Polyps
PubMed: 36594774
DOI: 10.12968/hmed.2022.0289 -
Frontiers in Immunology 2021Tonsil hyperplasia is the most common cause of pediatric obstructive sleep apnea (OSA). Despite the growing knowledge in tissue immunology of tonsils, the...
Tonsil hyperplasia is the most common cause of pediatric obstructive sleep apnea (OSA). Despite the growing knowledge in tissue immunology of tonsils, the immunopathology driving tonsil hyperplasia and OSA remains unknown. Here we used multi-parametric flow cytometry to analyze the composition and phenotype of tonsillar innate lymphoid cells (ILCs), T cells, and B cells from pediatric patients with OSA, who had previous polysomnography. Unbiased clustering analysis was used to delineate and compare lymphocyte heterogeneity between two patient groups: children with small tonsils and moderate OSA (n = 6) or large tonsils and very severe OSA (n = 13). We detected disturbed ILC and B cell proportions in patients with large tonsils, characterized by an increase in the frequency of naïve CD27CD21 B cells and a relative reduction of ILCs. The enrichment of naïve B cells was not commensurate with elevated Ki67 expression, suggesting defective differentiation and/or migration rather than cellular proliferation to be the causative mechanism. Finally, yet importantly, we provide the flow cytometry data to be used as a resource for additional translational studies aimed at investigating the immunological mechanisms of pediatric tonsil hyperplasia and OSA.
Topics: Child, Preschool; Female; Flow Cytometry; Humans; Hyperplasia; Immunity, Innate; Lymphocytes; Male; Memory B Cells; Palatine Tonsil; Receptors, CXCR5; Sleep Apnea, Obstructive; Tumor Necrosis Factor Receptor Superfamily, Member 7
PubMed: 34745084
DOI: 10.3389/fimmu.2021.674080 -
Science (New York, N.Y.) Feb 2022Deciphering immune responses to viruses and vaccines using human tonsil organoids.
Deciphering immune responses to viruses and vaccines using human tonsil organoids.
Topics: Adaptive Immunity; Humans; Immunogenicity, Vaccine; Organoids; Palatine Tonsil; Vaccines; Virus Diseases
PubMed: 35201866
DOI: 10.1126/science.abn9652 -
BioMed Research International 2018To evaluate the value of Brodsky tonsil scale in predicting the objective tonsil volume and to identify the potential factors that might interfere with the accuracy of...
PURPOSE
To evaluate the value of Brodsky tonsil scale in predicting the objective tonsil volume and to identify the potential factors that might interfere with the accuracy of prediction.
METHODS
A total of 87 adult patients who underwent single tonsillectomy or uvulopalatopharyngoplasty (UPPP) procedure including tonsillectomy in our hospital between Jan 2015 and Dec 2016 were included. The data of Brodsky tonsil scale evaluated preoperatively and objective tonsil volume evaluated postoperatively were collected for analysis.
RESULTS
Among the 87 adult patients included, 85 patients underwent bilateral tonsillectomy, while only 2 underwent unilateral procedure. Therefore, a total of 172 tonsils were included. Significant positive correlations were established between Brodsky scale and objective volume for either right (R = 0.647), left (R = 0.664), or overall tonsils (R = 0.654) (all < 0.001). However, volume overlaps could be found between 2+ and 3+ tonsils. Age [odds ratio (OR) = 4.053, = 0.003] and body mass index (BMI; OR=1.740, = 0.044) were found to be independent factors that could influence the consistency between the Brodsky scale and objective volume. As a result, a formula "Index = -1.409+1.399×age+0.554×BMI" was constructed for the evaluation of the consistency.
CONCLUSION
Tonsil grading was significantly correlated with tonsil volume; preoperative tonsil grading that reflected the real tonsil volume was regarded as the protocol for the evaluation of the tonsil size. Age and BMI were independent factors that could affect the consistency between tonsil grade and tonsil volume. A mathematical model was estimated to predict the consistency accurately.
Topics: Adult; Body Mass Index; Female; Humans; Male; Middle Aged; Organ Size; Palatine Tonsil; Prospective Studies; Tonsillectomy
PubMed: 30474041
DOI: 10.1155/2018/6434872 -
Tidsskrift For Den Norske Laegeforening... Mar 2021Tonsillectomy and tonsillotomy are common surgical procedures, especially among children and adolescents. Post-operative bleeding is a potentially alarming and dangerous...
BACKGROUND
Tonsillectomy and tonsillotomy are common surgical procedures, especially among children and adolescents. Post-operative bleeding is a potentially alarming and dangerous complication. We wished to identify the prevalence of postoperative bleeding and associated risk factors in Ålesund hospital.
MATERIAL AND METHOD
The study is based on a retrospective review of the records of all patients who underwent tonsil surgery at Ålesund hospital in the five-year period from 2015-2019.
RESULTS
Of 1394 patients who underwent tonsil surgery, tonsillectomy was performed in 1285 patients and tonsillotomy in 109 patients. Thirty patients (2.2 %) had primary haemorrhage (< 24 hours). Twenty patients (1.4 %) were hospitalised due to secondary haemorrhage (> 24 hours), after an average of 5.4 days. Five patients (0.4 %) were reoperated due to postoperative bleeding. No postoperative bleeding was recorded after tonsillotomy. Increased risk of late postoperative bleeding was found for patients aged 16 years and over, and patients with primary haemorrhage.
INTERPRETATION
The proportion of cases of postoperative bleeding was low compared to international studies. Our figures are likely representative for other otorhinolaryngology departments in Norway, and may provide useful information to clinicians and patients prior to tonsil surgery.
Topics: Adolescent; Child; Humans; Norway; Palatine Tonsil; Postoperative Hemorrhage; Retrospective Studies; Tonsillectomy
PubMed: 33754678
DOI: 10.4045/tidsskr.20.0813 -
Stem Cells (Dayton, Ohio) Oct 2019Since the discovery of stem cells and multipotency characteristics of mesenchymal stem cells (MSCs), there has been tremendous development in regenerative medicine. MSCs... (Review)
Review
Since the discovery of stem cells and multipotency characteristics of mesenchymal stem cells (MSCs), there has been tremendous development in regenerative medicine. MSCs derived from bone marrow have been widely used in various research applications, yet there are limitations such as invasiveness of obtaining samples, low yield and proliferation rate, and questions regarding their practicality in clinical applications. Some have suggested that MSCs from other sources, specifically those derived from palatine tonsil tissues, that is, tonsil-derived MSCs (TMSCs), could be considered as a new potential therapeutic tool in regenerative medicine due to their superior proliferation rate and differentiation capabilities with low immunogenicity and ease of obtaining. Several studies have determined that TMSCs have differentiation potential not only into the mesodermal lineage but also into the endodermal as well as ectodermal lineages, expanding their potential usage and placing them as an appealing option to consider for future studies in regenerative medicine. In this review, the differentiation capacities of TMSCs and their therapeutic competencies from past studies are addressed. Stem Cells 2019;37:1252-1260.
Topics: Humans; Mesenchymal Stem Cells; Palatine Tonsil; Regenerative Medicine; Tissue Engineering
PubMed: 31287931
DOI: 10.1002/stem.3058 -
RoFo : Fortschritte Auf Dem Gebiete Der... Sep 2018
Topics: Calcinosis; Dental Implantation, Endosseous; Female; Humans; Imaging, Three-Dimensional; Incidental Findings; Mandibular Diseases; Middle Aged; Palatine Tonsil; Pharyngeal Diseases; Radiography, Dental, Digital; Radiography, Panoramic
PubMed: 29590667
DOI: 10.1055/a-0591-4659 -
BMJ Case Reports Feb 2021Two patients suffering from chronic recurrent tonsillitis were reported. The first patient was confirmed infected with COVID-19, 3 weeks prior to tonsillectomy. The...
Two patients suffering from chronic recurrent tonsillitis were reported. The first patient was confirmed infected with COVID-19, 3 weeks prior to tonsillectomy. The detritus and tonsil specimen were further analysed through real-time PCR (RT-PCR) and revealed amplification of the fragment N and ORF1ab genes of SARS-CoV-2. The second patient had a negative IgM and positive IgG antibody for COVID-19; however, the nasopharyngeal swab indicated negative for SARS-CoV-2. Tonsillectomy was performed 2 weeks after the swab; the tonsil specimen was analysed through RT-PCR and revealed amplification of the N2 and RdRp gene of SARS-CoV-2. According to both results, the presence of the SARS-CoV-2 gene remains to be detected in tonsil and/or detritus after 2-3 weeks after recovery. Hence, it is suggested that it is necessary to use adequate protection when performing tonsillectomy on early recovered patients with COVID-19. Furthermore, tonsillectomy would be more advisable to be performed after the fourth week after recovery from COVID-19.
Topics: Adult; COVID-19; COVID-19 Nucleic Acid Testing; Female; Humans; Male; Palatine Tonsil; SARS-CoV-2; Tonsillectomy; Tonsillitis; Young Adult
PubMed: 33547127
DOI: 10.1136/bcr-2020-239108