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Broccoli sprout drink enhances detoxification of air pollutants in clinical trial in China
Date:6/16/2014

he body's capacity to expunge these types of the pollutants.

The 12-week trial included 291 participants who live in a rural farming community in Jiangsu Province, China, approximately 50 miles north of Shanghai, one of China's more heavily industrialized regions. Participants in the control group drank a beverage made of sterilized water, pineapple and lime juice while the beverage for the treatment group additionally contained a dissolved freeze-dried powder made from broccoli sprouts that contained glucoraphanin and sulforaphane. Sixty-two men (21%) and 229 women (79%) with a median age of 53 (ranging from 21 to 65) years were enrolled in the study. Urine and blood samples were taken over the course of the trial to measure the fate of the inhaled air pollutants.

The research team found that among participants receiving the broccoli sprout beverage, the rate of excretion of the carcinogen benzene increased 61% beginning the first day and continuing throughout the 12-week period. In addition, the rate of excretion of the irritant acrolein, rapidly and durably increased 23% during the 12-week trial. Secondary analyses by the investigators indicated that the sulforaphane may be exerting its protective actions by activating a signaling molecule, NRF2, that elevates the capacity of cells to adapt to and survive a broad range of environmental toxins. This strategy may also be effective for some contaminants in water and food.

"This study points to a frugal, simple and safe means that can be taken by individuals to possibly reduce some of the long-term health risks associated with air pollution," notes Thomas Kensler, PhD, professor at the Johns Hopkins Bloomberg School and one of the study's co-authors. "This while government leaders and policy makers define and implement more effective regulatory policies to improve air quality."

The clinical trial targeting prevention is notable in that it evaluated a possible means to reduce the b
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Contact: Susan Sperry
ssperry1@jhu.edu
410-955-6919
Johns Hopkins University Bloomberg School of Public Health
Source:Eurekalert

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