Status (on/off) of oipA gene: their associations with gastritis and gastric cancer and geographic origins

Author(s)

Sallas, Mayara Luciana ^[1] ; dos Santos, Monica Pezenatto ^[1] ; Orcini, Wilson Aparecido ^[1] ; David, Erica Boarato ^[1] ; Peruquetti, Rita Luiza ^[1] ; Marques Payao, Spencer Luiz ^[2] ; Rasmussen, Lucas Trevizani ^{[1, 2]}

Affiliation

^[1] Univ Sagrado Coracao, Proreitoria Pesquisa & Posgrad, Irma Arminda 10-50, BR-17011160 Bauru, SP - Brazil

^[2] Fac Med Marilia FAMEMA, Lab Genet, Marilia, SP - Brazil

• Document type: Journal article
• Source: Archives of Microbiology; v. 201, n. 1, p. 93-97, JAN 2019.
• Web of Science Citations: 3

Abstract

Virulence factors of H. pylori, such as outer inflammatory protein A (oipA), are closely involved in the development of gastric diseases such as chronic gastritis and gastric cancer. The functional status of oipA is regulated by a repair mechanism based on CT dinucleotide repeats that influence the reading frame, thus granting the gene a functional or nonfunctional status; in other words, the functional status of the oipA gene seems to be associated with the development of gastric diseases. This study sought to detect the presence of the oipA gene and to determine its functional status in patients with gastric diseases. We analyzed 516 biopsy samples (101 with normal gastric tissue, 365 with chronic gastritis, and 50 with gastric cancer). The presence of oipA was determined by PCR, and the gene status was determined using sequencing reactions. The oipA gene was found to be associated with the development of chronic gastritis, and the on status of the gene was the most frequent in patients with gastric cancer who were from Western countries. The CT repeats revealed geographic characteristics, but it is the functional status of the oipA gene that seems to be involved in the development of gastric diseases and in the development of gastric cancer in particular. (AU)

• FAPESP's process: 15/15253-7 - Detection of Virulence Marker of H. pylori, oipA gene, Polymorphism Characterization + 144 and analysis of gene expression of Interleukin 2 in inflamatory gastric disease and gastric cancer
• Grantee: Mayara Luciana Sallas
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 15/11371-5 - Analysis of Expression of Micro RNAs and Genes Associated with Apoptosis and Chronic Inflammation in Gastric Diseases: A Possible Relation with Helicobacter pylori
• Grantee: Lucas Trevizani Rasmussen
• Support Opportunities: Regular Research Grants