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  • Title: Effect of Gastrin G-17 Combined with Pepsinogen PGI and PGII on the Early Screening of Gastric Cancer in the Department of Gastroenterology.
    Author: Chen H, Xu H.
    Journal: Altern Ther Health Med; 2024 Sep; 30(9):141-145. PubMed ID: 39110041.
    Abstract:
    OBJECTIVE: To compare serum levels of pepsinogen I (PGI), pepsinogen II (PGII), and gastrin-17 (G-17) among patients with gastritis, gastric ulcer, and gastric cancer, and to assess the effectiveness of these biomarkers individually and in combination for screening gastric cancer. METHODS: Serum levels of PGI, PGII, and G-17 were measured using enzyme-linked immunosorbent assay (ELISA) in 50 patients with gastric cancer, 60 with chronic gastritis, and 60 with gastric ulcer from February 2020 to June 2021. The diagnostic value of these biomarkers was analyzed through sensitivity, specificity, and ROC curve assessments. RESULTS: Serum PGI levels were significantly lower in patients with advanced gastric cancer compared to those with early gastric cancer (P < .05), while PGII and G-17 levels were significantly higher in advanced-stage patients (P < .05). The combined ROC curve analysis of PGI, PGII, and G-17 yielded an area under the curve (AUC) of 0.933, indicating higher diagnostic accuracy than any of the markers alone. Statistically significant differences were noted between the combined and individual tests (Z = 2.376, P < .05). Patients with PGI levels lower than 17.21 ng/ml had a worse prognosis compared to those with higher levels. Similarly, patients with PGII levels greater than 74.65 ng/ml and G-17 levels greater than 17.03 pmol/L had poorer prognoses. Additionally, higher G-17 levels were associated with significantly lower serum PGI levels. CONCLUSIONS: Patients with low expression of PGI have a poorer prognosis, and those with high expression of PGII and G-17 also have a poor prognosis. Combining the three indicators has clear value for the screening and prognostic evaluation of gastric cancer, making it worthy of clinical promotion and application.
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