Salivary Epidermal Growth Factor (EGF) Concentration Before and After Treatment of Reflux Laryngitis
Salivary Epidermal Growth Factor (EGF) Concentration Before and After Treatment of Reflux Laryngitis: Final Results
  • Phase

  • Study Type

  • Status

    Completed No Results Posted
  • Intervention/Treatment

    omeprazole ...
  • Study Participants

Saliva plays a key role in the homeostasis of the digestive tract
The reflux of gastroesophageal contents may cause damage to the esophageal, laryngeal and pharyngeal mucosas
There seems to be no correlation between the severity of reflux episodes and the intensity of inflammatory changes, suggesting individual protective mechanisms to refluxate exposure
Inorganic and Organic Salivary changes have been associated to Gastroesophageal Reflux Disease (GERD) and its supraesophageal manifestations, especially reflux laryngitis (Laryngopharyngeal Reflux- LPR)
Decreased salivary Epidermal Growth factor (EGF) concentrations have been found in patients with GERD and LPR, but it is unclear if these are primary or secondary to the disease.
Hypothesis: The decreased salivary EGF concentrations in patients with reflux laryngitis is primary and therefore would not change after treatment and control of the disease
Background & Aims: Gastroesophageal Reflux Disease (GERD) is known to affect the upper airways and may cause a variety of inflammatory changes in the pharynx and larynx. The pathophysiology of the supraesophageal forms of GERD is widely unknown. Studies have suggested decreased salivary epidermal growth factor (EGF) concentrations in patients with reflux esophagitis and laryngitis. It is however unclear if these abnormalities are primary or secondary. The aim of the current cohort study was to compare salivary EGF concentrations in adults with reflux laryngitis before and after treatment and control of the disease to that of healthy individuals. Methods: Twenty-one patients with reflux laryngitis were studied prospectively at a tertiary teaching hospital. Spontaneous whole saliva was sampled before and after a 16-week course of full dose proton pump inhibitor (PPI) twice daily and compared to that of 13 healthy controls. Salivary EGF concentrations were established using a commercially available Elisa kit.
Study Started
Jan 31
Primary Completion
Jan 31
Study Completion
Jul 31
Last Update
Mar 06

Drug omeprazole

omeprazole 40 mg twice a day for 16 weeks; dietary and lifestyle changes

  • Other names: reflux group pre-treatment, reflux group post-treatment, control group

reflux laryngitis group pre-treatment None

adults with clinical suspicion of Reflux Laryngitis confirmed by 24-hour double probe esophageal monitoring who have not made use of any treatment in the past 15 days.

study group - post treatment None

adults with reflux laryngitis after 16 weeks of treatment with proton pump inhibitor (omeprazole 40 mg twice a day)and dietary/lifestyle changes that present improvement in symptoms and video laryngoscopic signs of chronic laryngitis

control group None

healthy controls paired by gender and age that do not present symptoms and videolaryngoscopic signs suggestive of reflux laryngitis


25 adults with reflux laryngitis 13 healthy controls


Inclusion Criteria:

study group:

symptoms of reflux laryngitis (Reflux Symptom Index- RSI >13) and videolaryngoscopic signs (Reflux Finding Score - RFS >7),
positive 24 hour double probe esophageal PH monitoring;

control group:

Reflux Symptom Index (RSI)<13
Reflux Finding Score (RFS) < 7

Exclusion Criteria:

tobacco, alcohol or other inhaled drug use;
chronic or acute rhinosinusitis;
prior history of surgery to the digestive tract or salivary glands;
prior or current diagnosis of head and neck or digestive tract tumors;
chronic use of drugs known to alter salivary flow and irritate the larynx, such as, diuretics, anticonvulsants, antihistamines, and inhaled steroids
No Results Posted