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Table 2 Effect of CBHG and CBCHP on Stx in Vero cells, expressed as cytotoxicity percentages

From: The inhibitory effect of colloidal bismuth hydroxide gel on Escherichia coli O157:H7 and on the activity of Shiga toxins

Dilutions of toxins

Percentage of cytotoxicity (%)

Without bismuth (Control +)

CBHG1

CBCHP2

6 mg/ml

3 mg/ml

3 mg/ml

1.5 mg/ml

1/2

80

20

80

50a*

100

1/4

80

-

80

20

50a

1/8

50a

-

60

-

50

1/16

50

-

50a

-

-

1/32

-

-

-

-

-

  1. a50% cytotoxicity dose (CD50), * p < 0.05, 1CBHG: colloidal bismuth hydroxide gel; 2CBCHP: Chobet® bismuth cream with pectin.