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Related Concept Videos

Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
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Sputum Studies II: Culture and Sensitivity01:20

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Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
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Tonsillitis I: Introduction01:30

Tonsillitis I: Introduction

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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.
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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
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Related Experiment Video

Updated: Mar 1, 2026

Retroductal Submandibular Gland Instillation and Localized Fractionated Irradiation in a Rat Model of Salivary Hypofunction
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Retroductal Submandibular Gland Instillation and Localized Fractionated Irradiation in a Rat Model of Salivary Hypofunction

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Highlight: Understanding radiation sialadenitis.

Michael B Yaffe1

  • 1Science Signaling, AAAS, Washington, DC 20005, USA.

Science Signaling
|June 8, 2017
PubMed
Summary
This summary is machine-generated.

Radiation therapy for head and neck cancers can cause salivary gland complications due to a nonapoptotic function of caspase-3. This finding reveals a new mechanism behind treatment side effects.

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Radiation Treatment of Organotypic Cultures from Submandibular and Parotid Salivary Glands Models Key In Vivo Characteristics
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Murine Salivary Functional Assessment via Pilocarpine Stimulation Following Fractionated Radiation
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Murine Salivary Functional Assessment via Pilocarpine Stimulation Following Fractionated Radiation

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Related Experiment Videos

Last Updated: Mar 1, 2026

Retroductal Submandibular Gland Instillation and Localized Fractionated Irradiation in a Rat Model of Salivary Hypofunction
07:44

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Radiation Treatment of Organotypic Cultures from Submandibular and Parotid Salivary Glands Models Key In Vivo Characteristics
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Murine Salivary Functional Assessment via Pilocarpine Stimulation Following Fractionated Radiation
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Murine Salivary Functional Assessment via Pilocarpine Stimulation Following Fractionated Radiation

Published on: May 4, 2018

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Area of Science:

  • Oncology
  • Molecular Biology
  • Radiotherapy

Background:

  • Radiation therapy is a cornerstone treatment for head and neck cancers.
  • Salivary gland dysfunction is a common and debilitating side effect of this therapy.
  • The precise molecular mechanisms driving these complications remain incompletely understood.

Purpose of the Study:

  • To investigate the role of caspase-3 in the pathogenesis of radiation-induced salivary gland complications.
  • To explore potential nonapoptotic functions of caspase-3 in salivary gland tissue following radiation exposure.

Main Methods:

  • Utilized mouse models of head and neck radiation.
  • Assessed salivary gland function and histology post-irradiation.
  • Performed molecular analyses to evaluate caspase-3 activity and localization, distinguishing apoptotic from nonapoptotic roles.

Main Results:

  • Radiation therapy induced significant salivary gland dysfunction.
  • Caspase-3 activation was observed, but not primarily through apoptotic pathways.
  • Evidence suggests a nonapoptotic role for caspase-3 in mediating tissue damage and functional decline in salivary glands.

Conclusions:

  • The study identifies a nonapoptotic function of caspase-3 as a key contributor to salivary gland complications after head and neck cancer radiation.
  • This provides a novel molecular target for mitigating treatment-related toxicities.