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Chronic Pharyngitis01:23

Chronic Pharyngitis

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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,...
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Irritable Bowel Syndrome I: Introduction01:17

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
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Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
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Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
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Cystic Fibrosis: Management01:24

Cystic Fibrosis: Management

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Cystic fibrosis (CF) is an autosomal recessive disorder that predominantly affects individuals of Northern European descent, occurring at a rate of 1 in 3500. It is caused by a genetic mutation in a gene on chromosome 7, most commonly the ΔF508 mutation, that codes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This results in thicker mucus secretions and obstruction pathologies in multiple organs, including the lungs and sinuses.
Sinus disease and chronic...
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Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
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Changes in the Microbiome During Chronic Rhinosinusitis.

Mateusz de Mezer1, Nina Chalama2, Cheyanna Bratt2

  • 1Department of Immunobiology, Poznań University of Medical Sciences, Rokietnicka 8 St., 60-812 Poznań, Poland.

Pathogens (Basel, Switzerland)
|January 25, 2025
PubMed
Summary

Chronic rhinosinusitis (CRS) involves complex interactions between the nasal microbiome and immune responses. Understanding these microbial communities is key to uncovering CRS causes and developing personalized treatments.

Keywords:
chronic rhinosinusitis (CRS)dysbiosisinverted papillomamicrobiomenasal polypsotolaryngologyupper airway

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Area of Science:

  • Otolaryngology
  • Microbiology
  • Immunology

Background:

  • Chronic rhinosinusitis (CRS) is a prevalent sinonasal inflammatory condition with an unclear etiology.
  • Emerging research highlights the role of the nasal microbiome in CRS pathogenesis and chronicity.
  • The sinonasal environment harbors diverse microbial communities, including bacteria like *Staphylococcus* and *Corynebacterium*, and pathogens such as *Haemophilus influenza*.

Purpose of the Study:

  • To explore the intricate relationship between microbial residents and the pathogenesis of the diseased sinonasal environment.
  • To investigate the influence of the nasal microbiome on the chronicity of CRS.
  • To examine the potential role of viral infections and benign mucosal lesions (inverted papillomas) in CRS development.

Main Methods:

  • This review synthesizes current research on the sinonasal microbiome in CRS.
  • It analyzes the composition and abundance of microbial species in healthy versus diseased states.
  • The review considers the interplay between bacteria, viruses, fungi, and host immunity.

Main Results:

  • The sinus microbiota in CRS patients are often dominated by *Staphylococcus* and *Corynebacterium*.
  • *Haemophilus influenza* is found in higher abundances in CRS patients compared to healthy individuals.
  • Viral infections may contribute to the recurrence and chronicity of sinonasal conditions like inverted papillomas.

Conclusions:

  • Discerning distinct 'healthy' and 'diseased' sinonasal microbiomes is crucial for understanding CRS etiology.
  • Identifying 'keystone' microbial species could pave the way for microbiome-tailored CRS treatments.
  • Further research is needed to fully elucidate the complex interplay of microbial, viral, fungal, and immunological factors in CRS.