Table 5.
Summary of findings from human studies investigating the effects of resistant starch (RS) on cell proliferation in the large bowel
(Medians and ranges)
Study | n (males/females) | Health status | Mean age (years) | Source of RS | RS dose (per d) | Intervention duration | Effect of RS on cell proliferation | |
---|---|---|---|---|---|---|---|---|
Median | Range | |||||||
van Munster et al. (1994)(51) | 14 (9/5) | Healthy | 28–73 | High-amylose maize starch (Hylon VII, RS type 2) | 45 g | 2 weeks | Decreased | |
Humphreys et al. (2014)(39) | 23 (17/6) | Healthy | 50–75 | Butyrylated high-amylose maize starch (+ high-red meat diet) | 40 g (+ 300 g red meat) | 4 weeks | Restored (decreased) cell proliferation levels to baseline, when given second following high-red meat diet | |
Wacker et al. (2002)(28) | 12 (7/5) | Healthy | 25 | High-amylose maize starch (Hylon VII, RS type 2) | Males 59·7 g and females 50·7 g | 4 weeks | No effect | |
Worthley et al. (2009)(29) | 17 (11/6) | Healthy | 60 | High-amylose maize starch (Hi-maize 958, RS type 2) | 25 g | 4 weeks | No effect | |
Present study | 75 (40/35); 35 given RS | Healthy | 52 | High-amylose maize starch (Hi-maize 260, RS type 2) | 23 g | 7 weeks | Increased (in older participants) | |
Dronamraju et al. (2009)(32) | 62 (35/27) | Colorectal cancer | 66 | 1:1 Blend of Novelose 240 (RS type 2) and Novelose 330 (RS type 3) | 30 g | <4 weeks | Reduction in the proportion of mitotic cells in the top half of the crypt | |
Grubben et al. (2001)(22) | 23 (12/11); 13 given RS | Recently removed adenomas | 57 | High-amylose maize starch (Hylon VII, RS type 2) | 45 g | 4 weeks | No effect | |
van Gorkom et al. (2002)(21) | 86 (53/30); 28 given RS | ≥1 Sporadic adenoma(s) removed within 5 years | 60 | High-amylose maize starch (Hylon VII, RS type 2) | 30 g | 8 weeks | No effect | |
Burn et al. (2011)(50) | 131 (65/66); 61 given RS | Familial adenomatous polyposis | 18 | 1:1 Blend of potato starch and high-amylose maize starch (Hi-maize 958, RS type 2) | 30 g | 1–12 years | No effect |