Alpha-glutamyl-tryptophan as adjuvant reparative therapy after Helicobacter pylori eradication in chronic atrophic gastritis: A case report and literature review

Figure 3 Histological changes in metaplastic atrophy of the gastric mucosa before and after eradication therapy and adjuvant reparative therapy with alpha-glutamyl-tryptophan. A: Pretreatment biopsy demonstrating intestinal metaplasia with alcian blue-positive mucin staining; B: Post-treatment biopsy demonstrating reduction of alcian blue-positive metaplastic changes. Alcian blue staining (pH 2.5); scale bar = 100 µm (× 100 magnification). Alcian blue staining was used to identify acidic mucins and assess intestinal metaplasia of the gastric mucosa.