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Tonsillitis I: Introduction

Tonsillitis I: Introduction

Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat.
Etiology
Three primary contributing factors have been identified.

Tonsillitis II: Management

Tonsillitis II: Management

This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity.

Chronic Pharyngitis

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...

Role of Matrix Metalloproteases in Degradation of ECM

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...

Inflammation

Inflammation

Inflammatory Response I: Vascular and Cellular

Inflammatory Response I: Vascular and Cellular

The inflammatory response is the body's defense against infection, injury, or irritation from bacteria, trauma, toxins, or heat. Inflammation helps locate and destroy pathogens and remove damaged tissue elements to heal the body. During this initial phase, fluid, blood products, and nutrients migrate to the injured area, resulting in redness, heat, swelling, ache, and loss of function. Moreover, signs of systemic inflammation include fever, increased WBC count, malaise, anorexia, nausea,...

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Updated: Mar 12, 2026

Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue

Isolation of Tonsillar Mononuclear Cells to Study Ex Vivo Innate Immune Responses in a Human Mucosal Lymphoid Tissue

Published on: June 14, 2020

Systemic matrix metalloproteinase-8 response in chronic tonsillitis.

Taru Ilmarinen¹, Triin Lont¹, Jaana Hagström^2,3

¹a Department of Otorhinolaryngology - Head and Neck Surgery , University of Helsinki and Helsinki University Hospital , Helsinki , Finland.

Infectious Diseases (London, England)

|November 3, 2016

Summary

Chronic tonsillitis is linked to higher systemic matrix metalloproteinase (MMP)-8. Patients with tonsillar cancer show elevated MMP-8 and tissue inhibitor of metalloproteinase (TIMP)-1 levels compared to those with benign tonsillar disease.

Keywords:

HPV Head and neck cancer MMP-8 TIMP-1 tonsillitis

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Published on: February 22, 2017

Area of Science:

Inflammation research
Oncology biomarkers
Head and neck pathology

Background:

Low-grade systemic inflammation contributes to chronic diseases like coronary heart disease.
Chronic tonsillitis's long-term health impacts are not well-documented.
Systemic matrix metalloproteinase (MMP)-8 and tissue inhibitor of metalloproteinase (TIMP)-1 are implicated in inflammatory conditions and cancer prognosis.

Purpose of the Study:

To investigate systemic MMP-8 and TIMP-1 levels in patients with benign tonsillar disease and tonsillar squamous cell carcinoma.
To explore the association between chronic tonsillitis and systemic MMP-8 response.
To determine the correlation between these biomarkers and human papillomavirus (HPV) status in tonsillar cancer.

Main Methods:

Analyzed serum MMP-8 (S-MMP-8) using immunofluorometric assay and serum TIMP-1 (S-TIMP-1) using immunosorbent assay.
Included 175 patients undergoing tonsillectomy for benign tonsillar disease and 33 control patients with tonsillar squamous cell carcinoma.
Determined tonsillar HPV status via PCR.

Main Results:

Chronic tonsillitis without hypertrophy was associated with an enhanced systemic MMP-8 response.
Patients with tonsillar squamous cell carcinoma exhibited significantly higher S-MMP-8 and S-TIMP-1 concentrations than those with benign tonsillar disease.
No correlation was found between S-MMP-8 or S-TIMP-1 levels and tonsillar HPV positivity.

Conclusions:

Systemic MMP-8 elevation is linked to chronic tonsillitis.
Elevated S-MMP-8 and S-TIMP-1 may serve as potential biomarkers for tonsillar squamous cell carcinoma.
HPV status does not appear to influence MMP-8 or TIMP-1 levels in this context.