ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Inflammation Disrupts Memory - What Can You Do to Protect Your Brain?

All About Ginkgo Biloba: Benefits of This Timeless Herbal Supplement

Yarrow Oil: Here's Why It Deserves a Place in Your First-Aid Kit

Trial Finds Reduction in Depressive Symptoms Following Magnesium Supplementation

Artificial sweeteners linked to risk of weight gain, heart disease and other health issues

Carnitine deficiency suggested as contributor to autism

Vitamin D supplement use associated with lower risk of breast cancer

Hop Oil: A Safe Sleep Aide

White Camphor Oil: The Purest Camphor Oil

Lutein — An Important Nutrient for Eye and Brain Health

 
Print Page
Email Article

Abstract: Effects of Phenol-Depleted and Phenol-Rich Diets on Blood Markers of Oxidative Stress, and Urinary Excretion of Quercetin and Kaempferol in Healthy Volunteers

  [ 206 votes ]   [ Discuss This Article ]
www.ProHealth.com • June 25, 2003


Journal of the American College of Nutrition, Vol. 22, No. 3, 217-223 (2003)  Published by the American College of Nutrition.  Original Research.  Authors: Hwa-Young Kim, MSc, Ok-Hee Kim, PhD and Mi-Kyung Sung, PhD Department of Food and Nutrition, Sookmyung Women’s University (H.-Y.K., M.-K.S.), Seoul, KOREA  National Institute of Toxicological Research, Korea Food and Drug Administration (O.-H.K.), Seoul, KOREA
Address reprint requests to: Mi-Kyung Sung, Ph.D., Associate Professor, Department of Food and Nutrition, Sookmyung Women’s University, 53-12 Chungpa-dong 2-ka, Yongsan-ku Seoul, 140-742, KOREA. Email: mksung@sookmyung.ac.kr

Objective: Epidemiological studies have suggested beneficial effects of dietary polyphenols in reducing the risk of chronic diseases. This study was performed to investigate the effects of polyphenol-depleted and polyphenol-rich diets on blood oxidative stress markers and urinary excretions of major phenols.

Methods: Nineteen healthy female non-smokers 19 to 21 years of age took part in the study, which consisted of two dietary intervention periods separated by three days. Experimental diets were composed of common foods selected to comply with low contents of polyphenols for phenol-depleted intervention and high contents of polyphenols for phenol-rich diets. Blood and urine samples were collected on day 0, 3 and 6 of each intervention. Duplicate portions of foods provided to the subjects were also collected.

Blood oxidative stress markers included plasma antioxidant vitamins, erythrocyte superoxide dismutase (SOD) activity and lymphocyte DNA damage. Urinary excretions of major phenols were measured to affirm bioavailability of dietary phenols.

Results: Plasma -tocopherol and ß-carotene concentrations were slightly decreased on day 3 and 6 of the phenol-depleted dietary intervention period, although no change was observed with phenol-rich diets. The erythrocyte SOD activity was also slightly decreased during phenol-depleted dietary intervention.

However, at day 6 of the phenol-rich intervention, the activity of SOD was significantly increased by 41%. Tail moment and tail length of lymphocyte DNA as markers of DNA damage were higher on day 6 of phenol-depleted intervention, although only tail moment showed a statistical significance.

The average intakes of quercetin and kaempferol during the phenol-rich intervention were 21 mg/day and 9 mg/day, respectively. The average urinary excretion rates during phenol-rich intervention were 2.06% for quercetin and 0.46% for kaempferol. There were positive correlations between erythrocyte SOD activity and urinary concentration of quercetin or kaempferol.

Conclusions: These results suggest that polyphenol-rich diets may decrease the risk of chronic diseases by reducing oxidative stress.

Key words: polyphenols, antioxidants, DNA damage, quercetin, kaempferol




Post a Comment

Featured Products From the ProHealth Store
Optimized Curcumin Longvida® Mitochondria Ignite™ with NT Factor® Energy NADH™ 12.5mg


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength

Natural Remedies

Everything You Always Wanted to Know About Sleep But Were Too Tired to Ask Everything You Always Wanted to Know About Sleep But Were Too Tired to Ask
Block Acid Reflux to Prevent Esophageal Problems! Block Acid Reflux to Prevent Esophageal Problems!
Quercetin: Natural Support for Allergy & Inflammation Relief and More Quercetin: Natural Support for Allergy & Inflammation Relief and More
How to Jump-start and Sustain Energy Production in CFS How to Jump-start and Sustain Energy Production in CFS
The Surprising Benefits of Probiotics - What You Didn't Know The Surprising Benefits of Probiotics - What You Didn't Know

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map