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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.