Navigation Links
Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless
Date:8/13/2007

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 numbe
'/>"/>

Contact: Greg Lester
lester@aacr.org
267-646-0554
American Association for Cancer Research
Source:Eurekalert

Page: 1 2

Related biology news :

1. New research indicates a troubled greenhouse is brewing
2. Genetic defects give the immune system the green light to attack the pancreas
3. While on trail of dioxin, scientists pinpoint cancer target of green tea
4. UN successfully tests green pesticide against locusts
5. Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University
6. Bacteria are key to green plastics, drugs
7. New tools used to control foodborne hepatitis A outbreaks related to green onions
8. Green diesel: New process makes liquid transportation fuel from plants
9. FDA: Highly Unlikely Green Tea Lowers Cancer Risk
10. Microbes under Greenland Ice may be preview of what scientists find under Mars surface
11. Asleep in the deep: Model helps assess ocean-injection strategy for combating greenhouse effect
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... study of its kind to date, researchers have used ... the risk for autism. Joseph Buxbaum, Ph.D., Icahn School ... Daly, Ph.D., Broad Institute of Harvard and MIT, and ... affected children, parents and unrelated people. They identified changes ... the risk for autism spectrum disorder (ASD) – a ...
(Date:10/29/2014)... both genetic and environmental, have been blamed for ... Some, such as a family history of schizophrenia, ... Toxoplasma gondii , a parasite transmitted by ... viewed with skepticism. , A new study by ... at the University of Pennsylvania,s School of Veterinary ...
(Date:10/29/2014)... all the rage. Thousands of scientists worldwide are conducting ... titanium dioxide nanoparticles from sun creams can get through ... from electronic products are as hazardous for the lungs ... food can get into the blood via the intestinal ... are flowing – and the number of scientific projects ...
Breaking Biology News(10 mins):Penn vet professor investigates parasite-schizophrenia connection 2Penn vet professor investigates parasite-schizophrenia connection 3Nanosafety research: The quest for the gold standard 2Nanosafety research: The quest for the gold standard 3
... 2003 revealed the enormous instruction manual necessary to define ... questions. There are few indications on where the functional ... we develop, scientists will have to decode the entire ... the biggest challenges is to analyse the key proteins ...
... responsible for chronic infections in cystic fibrosis patients use ... start building a structure that helps the microbes resist ... have determined that the bacterial cell-surface sugar, a polysaccharide ... bacterium as a helix, providing a structure that encourages ...
... to occur under climate change scenarios has led many scientists ... wildfires. But a new study in the May issue of ... in the types of plants growing in an area could ... Philip Higuera of Montana State University and his colleagues show ...
Cached Biology News:Learning how the pieces responsible for interpreting the human genome work 2Learning how the pieces responsible for interpreting the human genome work 3Sugar on bacteria surface serves as base for a web of resistance 2Sugar on bacteria surface serves as base for a web of resistance 3Plants could override climate change effects on wildfires 2
(Date:10/30/2014)... James Sherley says he has been working towards ... since his days as a principal investigator at the Fox ... Sherley founded the ASCTC as a new Boston biotech ... property developed in Sherley’s research over the years since FCCC, ... (MIT), and more recently as a senior scientist at the ...
(Date:10/30/2014)... Ras Al Khaimah, UAE (PRWEB) October 30, 2014 ... the appointment of Dr. James A. Manganello, Chairman of the ... (NSCEC) of The Bahamas. The appointment was made by ... The Bahamas on September 24th, 2014. , More ... Cell Therapy and Research Bill , Prime Minister Perry Christie ...
(Date:10/30/2014)... solution to one of the key challenges in the ... of Sussex physicists. , In a paper published today ... Garraway and colleagues show how to make a new ... Quantum technology devices, such as high-precision sensors and specialised ... of atoms. But the methods for trapping these tiny ...
(Date:10/27/2014)... The Italian company Roadrunnerfoot ... sell its artificial "lower limb", after the German ...      (Photo: http://photos.prnewswire.com/prnh/20141027/713097 ) , ... definitive judgement has arrived: Roadrunnerfoot, the small Italian ... hi-tech prostheses with composite materials, has won against ...
Breaking Biology Technology:Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2
... but biology is a game of nanometers, where spatial differences ... a cell - whether it lives or dies, remains normal ... (DOE),s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a ... patterns on living cells. Chemist Jay Groves led a ...
... Northwest Biotherapeutics (OTC.BB: NWBO) (Northwest Bio) today announced, as ... the availability online of an interview of Northwest Bio ... (Logo:   http://photos.prnewswire.com/prnh/20110329/SF73084LOGO ) The ... behind DCVax® and the progress now being made in ...
... Netsmart Technologies, Inc., a leading provider of clinical ... today announced an agreement with the Los Angeles ... provision of a comprehensive behavioral health clinical, administrative, ... as the Integrated Behavioral Health Information System (IBHIS). ...
Cached Biology Technology:Berkeley Lab scientists develop new tool for the study of spatial patterns in living cells 2Berkeley Lab scientists develop new tool for the study of spatial patterns in living cells 3Northwest Bio Announces Interview of CEO Linda Powers in Today's CEO/CFO Publication 2Northwest Bio Announces Interview of CEO Linda Powers in Today's CEO/CFO Publication 3County of Los Angeles Selects Netsmart to Provide Comprehensive Behavioral Health Information System 2County of Los Angeles Selects Netsmart to Provide Comprehensive Behavioral Health Information System 3
... cells (HSC) are well-characterized tissue-specific stem cells ... responsible for the life-long maintenance of the ... reside in adult bone marrow where hematopoiesis ... be found in cord blood, fetal liver, ...
Anti-TWIK-1 Immunogen: Purified peptide from amino acids 53-69 of human TWIK-1 (Accession number O00180)....
EDG-6 (1)...
RAW; Collected from 8-12 week old sexually mature mice that are free of common parasites; RAW Collected from 8-12 week old sexually mature mice that are free of common parasites....
Biology Products: