Antigen expression associated with lymph node metastasis in gastric adenocarcinomas

Area of Science:

• Oncology
• Molecular Biology
• Pathology

Background:

• Gastric adenocarcinomas exhibit variable metastatic potential.
• Identifying biomarkers for lymph node metastasis is crucial for prognosis and treatment.

Purpose of the Study:

• To investigate the expression of urokinase-type plasminogen activator (u-PA) and nucleobindin (Nuc) in gastric adenocarcinomas.
• To determine the correlation between u-PA and Nuc expression and lymph node metastasis.

Main Methods:

• Immunohistochemical analysis of 100 gastric adenocarcinomas (50 with and 50 without lymph node metastasis).
• Assessed reactivity for u-PA, Lex related 4C9 antigen, Jun, and Nuc.

Main Results:

• Higher positivity rates for u-PA (82% vs 52%) and Nuc (56% vs 10%) were observed in tumors with lymph node metastasis compared to those without.
• Significant correlations were found between u-PA expression and Nuc expression, infiltrative growth, invasion depth, and lymphatic invasion.
• Nuc expression correlated significantly with Jun expression, invasion depth, and lymphatic invasion.

Conclusions:

• Elevated expression of u-PA and Nuc in gastric tumor cells is associated with lymph node metastasis.
• Immunohistochemical detection of u-PA and Nuc may serve as valuable indicators for predicting the metastatic potential of gastric adenocarcinomas.