Overview of pathophysiological features of GERD

Area of Science:

• Gastroenterology
• Digestive Diseases
• Esophageal Disorders

Background:

• Gastroesophageal reflux disease (GERD) is highly prevalent and significantly impacts patient quality of life.
• The pathophysiology of GERD is complex and multifactorial, involving various esophageal and gastric mechanisms.
• Factors like decreased salivation, lower esophageal sphincter dysfunction, hiatal hernia, and refluxate composition contribute to GERD.

Purpose of the Study:

• To explore the complex and multifactorial pathophysiology of GERD.
• To identify key mechanisms contributing to GERD symptoms and complications.
• To highlight the importance of understanding GERD pathophysiology for future therapeutic targets.

Main Methods:

• Review of proposed mechanisms in GERD pathophysiology.
• Analysis of factors affecting esophageal mucosa integrity.
• Examination of risk factors influencing GERD onset and complications.

Main Results:

• GERD involves decreased salivation, LES pressure, impaired esophageal clearance, and delayed gastric emptying.
• Mucosal integrity is compromised in erosive esophagitis and NERD patients, but normal in functional heartburn.
• Obesity is linked to GERD complications like Barrett's esophagus and esophageal adenocarcinoma.

Conclusions:

• Understanding the diverse pathophysiological mechanisms of GERD is crucial for advancing therapeutic strategies.
• Further research is needed to fully elucidate the contributing factors and improve GERD management.
• The multifactorial nature of GERD necessitates a comprehensive approach to treatment and prevention.