Modified sequential therapy regimens for Helicobacter pylori eradication: a systematic review

Area of Science:

• Gastroenterology
• Infectious Diseases
• Pharmacology

Background:

• Efficacy of modified sequential therapies for Helicobacter pylori eradication remains debated.
• Various treatment regimens have been proposed.

Purpose of the Study:

• To assess the efficacy of modified sequential therapies for H. pylori eradication.
• To compare these regimens against standard triple therapies or standard sequential regimens.

Main Methods:

• Systematic literature review and pooled-data analysis.
• Inclusion of 21 trials evaluating different therapeutic strategies.

Main Results:

• Tetracycline-based sequential therapy (7+7 days) achieved 73.3% eradication, outperforming 14-day triple therapy (63.6%).
• Levofloxacin-based sequential therapy (5+5 days) demonstrated high cure rates (95.8% with 250mg, 90% with 500mg levofloxacin), exceeding standard regimens.
• Some modified therapies showed suboptimal efficacy; levofloxacin-based regimens yielded mixed results as second-line treatment.

Conclusions:

• Levofloxacin- and tetracycline-based sequential therapies are more effective than standard triple therapies.
• Sequential drug administration is a successful approach for H. pylori infection treatment.