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- W2022609480 abstract "Abstract Background: Helicobacter pylori infection is known to be a cause of iron deficiency anemia (IDA) that is unresponsive to iron supplements. H. pylori bind iron to a specific receptor by iron‐repressible outer membrane proteins (IROMPs) under conditions of restricted iron. Materials and Methods: We compared the expression of IROMPs from strains of H. pylori under both iron‐restricted and iron‐supplemented conditions to determine the difference between strains with and without IDA. One standard strain, two clinical strains, and three IDA strains were cultured; and then the IROMPs were extracted under iron‐restricted and iron‐supplemented conditions. We used SDS‐PAGE to compare the expression of the IROMPs from each strain. Results: IROMPs were found in IDA strains under iron‐restricted conditions and their molecular sizes were estimated to be 56, 48, 41, and 37 kDa. In the iron‐repleted media, the IROMPs were no longer present. Conclusion: In the iron‐depleted state, specific H. pylori strains associated with IDA demonstrated an advantage in iron acquisition due to a higher expression of IROMPs. Our results can explain in part why some patients with H. pylori infection are more prone to develop clinical IDA under restricted iron conditions in the host." @default.
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- W2022609480 date "2009-01-15" @default.
- W2022609480 modified "2023-10-18" @default.
- W2022609480 title "The Expression of Iron-repressible Outer Membrane Proteins in<i>Helicobacter pylori</i>and Its Association with Iron Deficiency Anemia" @default.
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- W2022609480 doi "https://doi.org/10.1111/j.1523-5378.2009.00658.x" @default.
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