Abstract:
OBJECTIVE:Brazilian propolis, a folk medicine, is used worldwide as an alternative medicine to prevent colon cancer. The objective of the study was to test in a small pilot biomarker study in a high-risk group the safety and efficacy of propolis for colon cancer prevention, which has not been evaluated in humans. METHODS:Subjects with adenoma polyps recently removed from the colon were randomly assigned to a propolis group of 15 and a placebo group of 16. In a double-blind study, the propolis group received capsules containing 165 μmol artepillin C and 150 μmol other polyphenols per day for 3 months. Prior to and at the end of the experiments, their blood was analyzed using biochemical tests, and specimens from the normal-appearing sigmoid colon mucosa were biopsied endoscopically to examine the levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG) and mRNA expressions of proliferating cell nuclear antigen, cyclin D1, and Bax. RESULTS:Propolis extract significantly increased the mRNA level of cyclin D1 in the sigmoid colon mucosa, and the other biomarkers remained unchanged. Blood biochemical tests showed significantly higher activity of creatine phosphokinase (CPK), 143 ± 52 units/ml in the propolis group and 104 ± 38 units/ml in the placebo group (p = 0.026), at the end of the study. The increase in CPK activity in the propolis group was due to the increase of the myocardial band form of CPK. On the other hand, laxative treatment prior to endoscopic biopsy significantly increased 8-OHdG levels. CONCLUSIONS:The results from our pilot study did not provide evidence that Brazilian propolis was effective in preventing changes occurring during early stages of colon cancer. In contrast, propolis may have detrimental side effects on muscle tissue, including myocardial cells.
journal_name
J Am Coll Nutrjournal_title
Journal of the American College of Nutritionauthors
Ishikawa H,Goto M,Matsuura N,Murakami Y,Goto C,Sakai T,Kanazawa Kdoi
10.1080/07315724.2012.10720434subject
Has Abstractpub_date
2012-10-01 00:00:00pages
327-37issue
5eissn
0731-5724issn
1541-1087pii
31/5/327journal_volume
31pub_type
杂志文章,随机对照试验abstract::Carbohydrate intolerance is positively correlated with saturated fat consumption. In contrast, individuals consuming diets comprised of polyunsaturated fatty acids (PUFA) have a lower incidence of diabetes mellitus (DM). To test the hypothesis that dietary fats may influence insulin sensitivity, insulin-stimulated glu...
journal_title:Journal of the American College of Nutrition
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journal_title:Journal of the American College of Nutrition
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journal_title:Journal of the American College of Nutrition
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journal_title:Journal of the American College of Nutrition
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:
更新日期:1997-12-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/07315724.1992.10718256
更新日期:1992-10-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
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更新日期:1988-02-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/07315724.2000.10718927
更新日期:2000-04-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.2017.1302366
更新日期:2017-07-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:1992-06-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1993.10718327
更新日期:1993-08-01 00:00:00
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更新日期:2020-05-29 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1982.10718998
更新日期:1982-01-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章,评审
doi:10.1080/07315724.1993.10718291
更新日期:1993-04-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1982.10718986
更新日期:1982-01-01 00:00:00
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doi:10.1080/07315724.2009.10719766
更新日期:2009-04-01 00:00:00
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pub_type: 杂志文章,随机对照试验
doi:10.1080/07315724.2007.10719582
更新日期:2007-02-01 00:00:00
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journal_title:Journal of the American College of Nutrition
pub_type: 杂志文章
doi:10.1080/07315724.1984.10720041
更新日期:1984-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2006-06-01 00:00:00