HOME >> BIOLOGY >> NEWS
Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless

PHILADELPHIA − Concentrated chemicals derived from green tea dramatically boosted production of a group of key detoxification enzymes in people with low levels of these beneficial proteins, according to researchers at Arizona Cancer Center.

These findings, published in the August issue of Cancer Epidemiology, Biomarkers & Prevention, a journal of the American Association for Cancer Research, suggest that a green tea concentrate might help some people strengthen their metabolic defense against toxins capable of causing cancer.

In a study of 42 people, the concentrate − composed of chemicals known as green tea catechins in amounts equal to that found in 8-16 cups of green tea − boosted production of the enzymes, which belong to the glutathione S-transferase (GST) family, by as much as 80 percent in some participants.

GST enzymes are believed to be crucial to the bodys defense against cancer-causing chemicals and other toxins, according to the studys lead investigator, H.-H. Sherry Chow, Ph.D., a research associate professor at the University of Arizona. They modify the cancer-causing molecules that would otherwise damage cellular DNA, thus rendering them inert.

They actually convert known carcinogens to non-toxic chemicals, and studies have shown a correlation between deficient expression of these enzymes and increased risk of developing some cancers, Chow said.

Expression of this enzyme varies dramatically in people due to genetic variation and environmental factors, Chow added. Green tea catechins somehow increase gene expression of these enzymes, which can be an advantage to people with low levels to start with.

Green tea has long been of interest to researchers given studies that have shown populations in which it is often consumed, such as the Chinese and Japanese, generally have lower rates of cancer. To find out if green tea can protect against cancer, the NCI has sponsored a n
'"/>

Contact: Greg Lester
lester@aacr.org
267-646-0554
American Association for Cancer Research
10-Aug-2007


Page: 1 2

Related biology news :

1. Greenlands ancient forests shed light on stability of ice sheet
2. Green Junta
3. Green Nanotechnology: Its Easier Than You Think
4. Green tea and COX-2 inhibitors combine to slow growth of prostate cancer
5. Stevens Center for Science Writings honors Edward O. Wilson with Green Book Award
6. Green payments are the future of agricultural support
7. Green Chemical Reactor Engineering -- XI
8. Climate changes are linked between Greenland and the Antarctic
9. Green plants share bacterial toxin
10. Mary Frances Lyon to receive Rockefellers Pearl Meister Greengard Prize
11. Green sturgeon receives threatened status

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/31/2020)... ... July 30, 2020 , ... Justin Zamirowski to ... a near term focus on Type 2 diabetes and associated comorbidities. , Justin ... therapeutic areas and classes. As Chief Commercial Officer, Justin will lead Better ...
(Date:7/18/2020)... ANTONIO (PRWEB) , ... July 16, 2020 , ... ... ONE that demonstrates the effectiveness of the Invictus Medical Neoasis™ active noise control ... environment. The study reported that the Neoasis™ device attenuated the alarm sounds from ...
(Date:7/10/2020)... (PRWEB) , ... July 08, 2020 , ... ... on Cell and Gene Therapy Regulation, An FDAnews Webinar, Wednesday, July 22, 2020 ... a comparability study, but what is the most effective way to complete one? ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... ... August 12, 2020 , ... ... International), a global leader in FDA compliance consulting has been named on its ... companies. The list represents a unique look at the most successful companies within ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is now ... With 50 million stem cells total, patients may choose which extremities they would like ... arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is obtained ...
(Date:7/31/2020)... and SOMERSET, N.J (PRWEB) , ... July 29, ... ... genome editing company, and Catalent, the leading global provider of advanced delivery technologies, ... health products, today announced that they have entered into a strategic partnership whereby ...
(Date:7/22/2020)... , ... July 22, 2020 , ... Join experts from ... Lorenc, Sr. Manager Regulatory Solutions, in a one hour live webinar on ... regulating body in China for drugs and medical devices. Specifically, for medical devices, the ...
Breaking Biology Technology:
Cached News: