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Volume 123, Issue 6, Pages 1923-1930 (December 2002)
Strain- and blood group–dependent binding of Helicobacter pylori to human gastric MUC5AC glycoforms Sara Lindén, Henrik Nordman, Jan Hedenbro, Marina Hurtig, Thomas Borén, Ingemar Carlstedt Gastroenterology Volume 123, Issue 6, Pages (December 2002) DOI: /gast Copyright © 2002 American Gastroenterological Association Terms and Conditions
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Fig. 1 CsCl density gradients on mucosal extracts from 5 human gastric samples. The gradients were emptied from the bottom of the tubes and analyzed for density (♢), A280 (dotted line), carbohydrate (♦), and sialic acid (solid line), as shown in A, C, E, G, and I, as well as reactivity with antibodies against blood-group substance A (○), B (●), Lea (▿), Leb (■), and H type 2 (□) and an antibody recognizing the Leb, BLeb, ALeb, and H type 1 structures (clone 96FR2.10) (▾), as shown in B, D, F, H, and J. Gastroenterology , DOI: ( /gast ) Copyright © 2002 American Gastroenterological Association Terms and Conditions
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Fig. 2 CsCl density gradients from gastric mucosa from (A and B) an Leb-positive individual (sample 4) and (C and D) an Leb-negative individual (sample 2). The samples were analyzed for density (♢), MUC5AC (▴), MUC6 (▵) (A and C), and adherence to bacterial strains CCUG17875 (●) and CCUG17874 (○) (B and D). Strain P466 showed a similar binding pattern as that of strain CCUG17875, whereas strains MO19, P1, P1-140, and and the babA1A2 mutant behaved similarly to strain CCUG17874. Gastroenterology , DOI: ( /gast ) Copyright © 2002 American Gastroenterological Association Terms and Conditions
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Fig. 3 CsCl density gradient from human gastric mucosa (sample 4). (A) Binding of H. pylori carrying the Leb adhesin to MUC5AC from a Leb-positive sample was demonstrated with a sandwich ELISA in which the monoclonal antibody 45M1 was used to specifically catch MUC5AC, which was then allowed to interact with strain CCUG17875 (□). (B) Binding of strain CCUG17875 (●) to mucins was inhibited by pretreatment with 1 μg/mL of Leb conjugate of the same strain (○). Gastroenterology , DOI: ( /gast ) Copyright © 2002 American Gastroenterological Association Terms and Conditions
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Fig. 4 Mucin subunits were subjected to anion-exchange chromatography on a Mono Q HR5/5 column. The nominal gradient is indicated by a solid line. Fractions were analyzed for carbohydrate (♦) and Leb (2-25LE) (■) (A, D, and G) MUC5AC (LUM5-1) (▴) and MUC6 (LUM6-3) (▵) (B, E, and H), and strains CCUG17875 (●), p466 (▾), and CCUG17874 (○) (C, F, and I). Strains MO19, P1, P1-140, 26695, and babA1A2 showed a similar binding pattern as CCUG17874 (data not shown). Gastroenterology , DOI: ( /gast ) Copyright © 2002 American Gastroenterological Association Terms and Conditions
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