Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome.

Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Research Abstract Details 

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Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Abstract Text:

Saori Fujimoto,Olabisi Olaniyi Ojo,Anna Arnqvist,Jeng Yih Wu,Stefan Odenbreit,Rainer Haas,David Y Graham,Yoshio Yamaoka,

BACKGROUND & AIMS: The blood grou. METHODS: We compared the ability of published PCR-based methods to assess BabA status with BabA immunoblotting and Lewis b (Le(b)) binding activity assays. We also used immunoblotting to examine the relationship between clinical presentation and levels of BabA expression. RESULTS: Immunoblotting and Le(b) binding assays for 80 strains revealed 3 levels of BabA expression: BabA high producers (BabA-H) with Le(b) binding activity, BabA low producers (BabA-L) without Le(b) binding activity, and BabA-negative. BabA-negative strains lacked the babA gene. PCR methods to determine BabA status yielded poor results. babA1 sequences were never detected. BabA expression was examined in 250 strains from Western countries and 270 strains from East Asia. The results failed to confirm any relationship between triple-positive status (cagA-positive/vacA s1/BabA-H) and clinical outcome. BabA-negative strains typically were cagA-negative/vacA s2 and were associated with gastritis. BabA-L strains showed a higher level of mucosal injury and were associated more frequently with duodenal ulcer and gastric cancer than the other groups. CONCLUSIONS: Information gained from currently used PCR-based methods must be interpreted with caution. Le(b) binding activity does not accurately reflect the severity of mucosal damage or the clinical outcome. Quantitation of BabA expression revealed that Le(b)-nonbinding BabA-L strains are associated with higher levels of mucosal injury and clinical outcome.

Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Publishing Authors By Initials

S Fujimoto,O Olaniyi Ojo,A Arnqvist,JY Wu,S Odenbreit,R Haas,DY Graham,Y Yamaoka,

For similar neoplasms: neoplasms by site: digestive system neoplasms: gastrointestinal neoplasms: stomach neoplasms research abstracts see: neoplasms: neoplasms by site: digestive system neoplasms: gastrointestinal neoplasms: stomach neoplasms research

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MEDLINE DATE:

Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Clinical gastroenterology and hepatology : the off

VOLUME: 5

Page Numbers: 49-58

Journal Abbreviation: Clin. Gastroenterol. Hepatol.

ISSN: 1542-7714

DAY: 6

MONTH: 12

YEAR: 2006

Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 101160775

Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Keywords Mesh Terms:

KEYWORDS: Stomach Neoplasms

MESH TERMS: genetics

Chemical & Substance for Abstract: Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome. Information

Substance Name: RNA, Messenger

Registry Number: 0

Grant and Affiliation Information for Helicobacter pylori BabA expression, gastric mucosal injury, and clinical outcome.

AFFILIATION: Department of Medicine, Michael E. DeBakey Veterans Affairs Medical Center and Baylor College of Medicine, Houston, Texas 77030, USA.

Country: United States

AGENCY: United States NIDDK

GRANT: R01 DK62813

ACRONYM: DK

MEDLINETA: Clin Gastroenterol Hepatol

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