Review
Copyright ©2005 Baishideng Publishing Group Inc.
World J Gastroenterol. Dec 7, 2005; 11(45): 7063-7071
Published online Dec 7, 2005. doi: 10.3748/wjg.v11.i45.7063
Table 2 Gastric carcinogenesis in Helicobacter pylori-infected Mongolian gerbils
AuthorYearStrainStudy design (ppm)Incidence ofcancer (%)Duration ofexperiment (wk)
Sugiyama et al.1998ATCC43504HP→MNU (10) HP alone MNU (30) → HP MNU alone7/19 (36.8) 0/20 (0) 6/18 (33.3) 0/74 (0)40 40 40 40
Tokieda et al.1999ATCC43504HP → MNNG (50) persistent HP positive HP eradicated Br → MNNG (50)5/17 (29.4) 5/8 (62.5) 0/9 (0) 3/22 (13.6)52 52 52 50
Shimizu et al.1999ATCC43504MNNG (300) → HP MNNG (300) → Br MNNG (60) → HP MNNG (60) → Br HP → MNNG (100) Br → MNNG (100) HP → MNNG (20) Br → MNNG (20) HP alone12/27 (44.4) 1/19 (5.3) 6/25 (24.0) 0/20 (0) 4/27 (14.8) 3/18 (16.7) 15/25 (60) 1/20 (5) 0/20 (0)50 50 50 50 50 50 50 50 50