Soluble Fas might serve as a diagnostic tool for gastric adenocarcinoma

• Published in: BMC cancer 2010-06, Vol.10 (1), p.275-275, Article 275
• Main Authors: Boroumand-Noughabi, Samaneh, Sima, Hamid Reza, Ghaffarzadehgan, Kamran, Jafarzadeh, Mostafa, Raziee, Hamid Reza, Hosseinnezhad, Hanieh, Moaven, Omeed, Rajabi-Mashhadi, Mohammad Taghi, Azarian, Amir Abbas, Mashhadinejad, Mojtaba, Tavakkol-Afshari, Jalil
• Format: Article
• Language: English
• Subjects: Adenocarcinoma - blood; Adenocarcinoma - diagnosis; Adenocarcinoma - pathology; Adenocarcinoma - surgery; Adult; Aged; Apoptosis; Biomarkers, Tumor - blood; Biopsy; Cancer research; Cancer therapies; Case-Control Studies; Chi-Square Distribution; Early Detection of Cancer; Endoscopy; Enzyme-Linked Immunosorbent Assay; Fas Ligand Protein - blood; fas Receptor - blood; Female; Gastrectomy; Gastric cancer; Hospitals; Humans; Immune system; Iran; Ligands; Male; Males; Medical prognosis; Medical research; Middle Aged; Neoplasm Staging; Oncology; Predictive Value of Tests; Radiation; Research centers; Stomach Neoplasms - blood; Stomach Neoplasms - diagnosis; Stomach Neoplasms - pathology; Stomach Neoplasms - surgery; Surgery; Technical Advance; Treatment Outcome; Tumors
• ISSN: 1471-2407; 1471-2407
• DOI: 10.1186/1471-2407-10-275

Fas (Apo-1/CD95) and its specific ligand (FasL) are key elements in apoptosis. They have been studied in different malignancies but there are few published studies about the soluble forms of these markers (i.e. sFas/sFasL) in gastric cancer. We have compared the serum levels of sFas/sFasL in gastric adenocarcinoma patients and cases with pre-neoplastic lesions as potential markers for early diagnosis, and investigated their relation with clinicopathological characteristics. Fifty-nine newly-diagnosed cases of gastric adenocarcinoma who had undergone gastrectomy, along with 62 endoscopically- and histologically-confirmed non-cancer individuals were enrolled in this study. sFas/sFasL serum levels were detected by Enzyme Linked Immunosurbent Assay. Mean serum sFas level was significantly higher in gastric cancer patients than in control group (305.97 +/- 63.71 (pg/ml) vs. 92.98 +/- 4.95 (pg/ml), P < 0.001); while the mean serum level of sFasL was lower in patients with gastric adenocarcinoma (0.138 +/- 0.04 (pg/ml) vs. 0.150 +/- 0.02 (pg/ml), P < 0.001). Mean serum levels of sFas/sFasL were significantly different in both intestinal/diffuse and cardiac/non-cardiac subtypes when compared to the control group (P < 0.001). There was an increase in the serum level of sFas from the first steps of pre-neoplastic lesions to gastric adenocarcinoma (P < 0.001). Patients who had no lymph node involvement (N0) showed significantly higher serum levels of sFas compared to others (P = 0.044). Production of sFas may play a critical role in the carcinogenesis of intestinal-type gastric cancer. sFas serum level may serve as a non-invasive tool for early diagnosis of gastric cancer.