Navigation Links
Alcohol consumption and polymorphisms of cytochromes P4502E1 are high risks for ESCC
Date:3/13/2008

Heavier alcohol consumption increases the risk of ESCC. There are synergetic interactions among alcohol drinking and ALDH2, ADH1B, CYP2E1 genotypes. The risk of ESCC in moderate-to-heavy drinkers, ALDH2 (1/2) combined with the ADH1B (1/1) genotype; ALDH2 (1/2) combined with the CYP2E1 (c1/c1) genotype; leads to synergetic interactions, higher than drinkers with ALDH2 (1/1) + ADH1B (1/2 + 2/2); ALDH2 (1/1) + CYP2E1 (c1/c2 + c2/c2).

This study, performed by a team led by Dr. Yan-Mei Guo, is described in a research article published in the March 7, 2008 issue of the World Journal of Gastroenterology.

ESCC is the seventh leading cause of cancer deaths worldwide. Epidemiologic studies have demonstrated that drinking alcoholic beverages is causally related to the development of ESCC. The genetic polymorphisms of Cytochromes P4502E1 (CYP2E1), aldehyde dehydrogenase-2 (ALDH2) and alcohol dehydrogenase-1B (ADH1B; previously called ADH2) affect the metabolism of alcohol. There were some other studies examining the roles of alcohol, CYP2E1, ALDH2 and ADH2 in ESCC. Their findings, however, were contradictory.

In the view of the authors, no clear explanation has, to date, existed to elucidate the susceptibility conferred by CYP2E1, ALDH2 and ADH1B genetic polymorphisms on ESCC. Neither have a definition and evaluation been found to explain the individual and combined roles of these genes and alcohol consumption.

The innovative aspect of this study was the way it looked at the interaction between the CYP2E1, ALDH2 genotype and heavy alcohol drinking, with case-control designs. Previous studies have not examined this issue in detail and to our knowledge this is the first study to show a significant interaction between the CYP2E1, ALDH2 genotype and alcohol drinking. We found there was synergetic interaction with polymorphisms of CYP2E1, ALDH2 genotype and heavy alcohol drinking. Individuals with combined ALDH2 (1/2) and CYP2E1 (c1/c1) genotype showed a dramatically increased risk of ESCC, which is higher than that due to the respective genotypes.

The susceptibility of alcohol and aldehyde dehydrogenase genotypes on ESCC became evident in 2003 when it became widely accepted that alcoholic beverages are causally related to cancer of the esophagus. A review of case-control studies of the effects of ALDH2 and ADH2 genotypes shows consistently positive associations between inactive heterozygous ALDH2 and the risk for esophageal cancer in East Asian heavy drinkers. Only the ALDH2 genotype has been demonstrated to have a critical role in the development of ESCC.

Using an elegant study design, including 80 male patients with esophageal cancer and 480 controls (age and sex matched), the consumption of alcohol and the genetic polymorphism of enzymes involved in the metabolism of ethanol was examined. This research was performed by doctors from the Laboratory of Gansu College of Traditional Chinese Medicine, Lanzhou, China and from the Laboratory of First hospital of Lanzhou University, Lanzhou, China.


'/>"/>

Contact: Jing Zhu
wjg@wjgnet.com
86-105-908-0039
World Journal of Gastroenterology
Source:Eurekalert

Related medicine news :

1. High alcohol consumption increases stroke risk among Chinese men
2. High alcohol consumption increases stroke risk, Tulane study says
3. Alcoholics With Cirrhosis Have More Brain Damage
4. Middle School Marks Most Critical Time to Start Ongoing Conversations About Drug and Alcohol Use With Kids
5. Recovery Resources Collaborates with Two Nonprofit Agencies for Children of Alcoholics Outreach Program
6. Frequent alcohol consumption increases cancer risk in older women
7. Family history of alcoholism affects response to drug used to treat heavy drinking
8. Alcohol and cancer: is drinking the new smoking?
9. Kaiser Permanente study: Alcohol amount, not type -- wine, beer, liquor -- triggers breast cancer
10. Kaiser Permanente Study Shows Alcohol Consumption - No Matter Beverage Type - Linked to Breast Cancer Risk
11. Hands2GO(R) Hand Sanitizer Offers Alcohol-Free Alternative to Stopping the Spread of Flu at School and Work
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2017)... , ... August 18, 2017 , ... ... Administration Reauthorization Act of 2017, legislation that provides for greater public access to ... moderate hearing loss to access OTC hearing aids without being seen by a ...
(Date:8/19/2017)... ... August 19, 2017 , ... ... of breastfeeding mothers. These illustrations show the diversity of the breastfeeding mothers, ... a wide range of sizes. These illustrations are also available on tote bags, ...
(Date:8/19/2017)... ... August 19, 2017 , ... Physician Partners ... Orlando location as an interventional pain management physician. He brings a wealth of ... of migraine headaches, and significant experience in spinal cord stimulation for chronic pain. ...
(Date:8/18/2017)... ... ... More than 20,000 pairs of shoes made their way across the Atlantic ... that conjoined the passions of an NBA star, a Liberty University student, and an ... will save lives from the rampant infections transmitted through the soil. , AMERICAN SOLES ...
(Date:8/18/2017)... ... August 18, 2017 , ... Mediaplanet today announces the ... healthy lifestyles and highlighting the importance of proactive eye and ear health. The ... the latest innovations in hearing aid technology. , In this issue, the ...
Breaking Medicine News(10 mins):
(Date:8/7/2017)... International plc (NASDAQ: ENDP ) today announced that ... U.S. mesh product liability claims and that it is ... claims at reasonable values. Under the agreements, Endo will ... 2017 and continuing through the fourth quarter of 2019. ... Company intends to increase its mesh product liability accrual ...
(Date:8/4/2017)... CINCINNATI , Aug. 3, 2017  Agragen, ... science company active in the biopharmaceutical, nutraceutical, and ... its development of its lead drug candidates, AGR131.  ... a proinflammatory cytokine from the blood of patients ... psoriasis, and inflammatory bowel disease. ...
(Date:8/2/2017)... 2017 Fenita J. Caldwell ... Pinnacle Lifetime Professional in the Field of Healthcare. ... Turing Pharmaceuticals, AG. Her skills and areas of ... ... of experience as a highly successful sales specialist ...
Breaking Medicine Technology: