期刊
FOOD SCIENCE & NUTRITION
卷 9, 期 2, 页码 662-671出版社
WILEY
DOI: 10.1002/fsn3.2028
关键词
angiotensin I-converting enzyme; blood pressure; cognitive function; Met-Lys-Pro; peptide
MKP is a casein-derived peptide with the potential to inhibit angiotensin I-converting enzyme and cross the blood-brain barrier. A randomized controlled trial with 30 healthy adults showed that high-dose intake of MKP was safe and may serve as a preventive measure against hypertension and cognitive decline in the future.
Met-Lys-Pro (MKP) is a casein-derived angiotensin I-converting enzyme inhibitory peptide with the potential to cross the blood-brain barrier. It has shown preventive effects against high blood pressure (BP) and cognitive decline in animal models and human studies. MKP shows good water solubility and can be blended into a variety of foods. However, its ease of intake may contribute to the possibility of overdose. Therefore, we aimed to evaluate the safety of high-dose intake of MKP in healthy adults by conducting a randomized controlled trial with 30 subjects. Participants were randomly allocated to the MKP (n = 15) or placebo (n = 15) group. Over 4 weeks, the MKP group received test powder containing a daily dose of 1,000 mu g of MKP, five times the minimum effective dose for cognitive improvement, whereas the placebo group received dextrin powder containing no detectable MKP. No clinical problems were observed in anthropometric and BP measurements or in blood and urine parameters. No adverse events owing to MKP intake were observed. These findings suggest that consumption of MKP is safe, and that it may be applicable as a safe preventive measure against hypertension and cognitive decline in future.
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