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en E-Cadherin Protein as a Potential Marker for Gastric Cancer and Its Association with Helicobacter Pylori- Induced Gastritis and Gastric Ulcer بیوشیمی Biochemistry مقالات اصلی Original Article <div style="text-align: justify;">Background: Gastric cancer is still the main health threat being the third leading cause of deaths from cancers in the world. The major risk behind the gastric cancer is that it remains asymptomatic in the early stages and in (97%) cases it metastasizes to other organs. Gastric cancer is a multifactorial disease in which Helicobacter pylori (H. pylori) has been known as a risk factor. However, patients with gastritis, especially atrophic gastritis and gastric ulcer have been shown to be at an increased risk for developing gastric cancer. Methods: This study included measuring the serum levels of E-Cadherin protein, carbohydrate antigen 19-9 (CA19-9) and carcinoembryonic antigen (CEA) in 30 patients diagnosed with gastritis, 20 gastric ulcer patients, 20 gastric cancer patients and in 20 healthy volunteers serving as the control group. Results: Infection with H. pylori was diagnosed by serology (IgA and IgG antibodies) as well as by rapid urease test (RUT) and histology. The results showed that 50 (71.4%) of the patients were positive for H. pylori. Levels of E-Cadherin were increased significantly in all patients in comparison to the control group with a large significant increase in the gastric cancer group. The levels of E-Cadherin were also significantly increased in H. pylori infected patients compared to H. pylori negative patients. A non-significant difference in the levels of CA19-9 and CEA was observed in all patients in comparison to healthy controls. Conclusions: This study concluded that serum E-Cadherin could be considered as a potential marker in diagnosis of gastric cancer.</div> E-Cadherin, Gastric Cancer, Gastric Ulcer, Gastritis, Helicobacter Pylori. 269 277 http://rbmb.net/browse.php?a_code=A-10-302-1&slc_lang=en&sid=1 Mustafa Kahtan Al-Bayaty mustafaalbayaty42@gmail.com 100319475328460017359 100319475328460017359 Yes Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq. Salma Abdul-Rudha Abass dr.salma_ar@yahoo.com 100319475328460017360 100319475328460017360 No Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq. Mohammed Faraj Al-Marjani dr.marjani@uomustansiriyah.edu.iq 100319475328460017361 100319475328460017361 No Department of Biology, College of Science, Mustansiriyah University, Baghdad, Iraq.