Comparative esophageal and anorectal motility in scleroderma

Area of Science:

• Gastroenterology
• Rheumatology
• Physiology

Background:

• Scleroderma, a connective tissue disease, can affect gastrointestinal motility.
• Previous studies have focused on esophageal dysfunction, but anorectal motility in scleroderma is less understood.

Purpose of the Study:

• To investigate and compare esophageal and anorectal motility abnormalities in patients with scleroderma.
• To assess the functional impact of progressive systemic sclerosis on gastrointestinal motility.

Main Methods:

• Esophageal and anorectal pressures were recorded in 26 scleroderma patients (11 localized, 15 progressive systemic sclerosis) and controls.
• Quantitative analysis of lower esophageal sphincter (LES) pressure, coordination, and relaxation.
• Assessment of the rectoanal inhibitory reflex (RAIR) amplitude and response to rectal distention.

Main Results:

• Patients with progressive systemic sclerosis exhibited significantly reduced LES resting and closing pressures, impaired LES opening coordination, and diminished relaxation compared to controls (p < 0.001).
• The RAIR was abnormal in 74% and absent in 13% of progressive systemic sclerosis patients, with reduced amplitude upon rectal distention (p < 0.001).
• A correlation was found between LES relaxation amplitude and RAIR amplitude (p < 0.05 to p < 0.025).

Conclusions:

• Systemic sclerosis frequently causes abnormal esophageal and anorectal motility.
• Anorectal motility dysfunction is as common as esophageal dysfunction in systemic sclerosis.
• These findings highlight the widespread gastrointestinal involvement in systemic sclerosis.