Related Experiment Video
Updated: May 8, 2026
10:43
Modeling Oral-Esophageal Squamous Cell Carcinoma in 3D Organoids
Published on: December 23, 2022
Alcohol and oral squamous cell carcinoma
L Feller1, R Chandran, R A G Khammissa
1Department of Periodontology and Oral Medicine, University of Limpopo, Medunsa Campus, South Africa. lfeller@ul.ac.za
Summary
Alcohol consumption significantly increases oral cancer risk. Acetaldehyde, a key ethanol metabolite, causes DNA damage and promotes oral squamous cell carcinoma, especially with tobacco use.
Area of Science:
- Oncology
- Toxicology
- Oral Medicine
Background:
- Alcohol is a known risk factor for oral squamous cell carcinoma (OSCC).
- Ethanol metabolism produces acetaldehyde, a toxic compound implicated in carcinogenesis.
- Alcohol consumption can impair nutrition and immune function, potentially aiding cancer development.
Purpose of the Study:
- To elucidate the mechanisms by which alcohol consumption contributes to oral squamous cell carcinoma.
- To identify the critical role of acetaldehyde in alcohol-induced oral carcinogenesis.
- To understand the synergistic effects of alcohol and tobacco in oral cancer pathogenesis.
Main Methods:
- Literature review on alcohol's effects on oral epithelium.
- Analysis of ethanol metabolism pathways and reactive oxygen species generation.
- Examination of epidemiological data on alcohol and OSCC.
- Investigation of alcohol's impact on nutritional and immune status.
Main Results:
- Alcohol enhances oral epithelial permeability, facilitating carcinogen entry.
- Ethanol metabolism generates free radicals and acetaldehyde, leading to DNA damage.
- Acetaldehyde is identified as a critical agent in excessive alcohol consumption-related OSCC risk.
- Alcohol acts synergistically with tobacco carcinogens in OSCC development.
Conclusions:
- Acetaldehyde is the primary mediator of alcohol's carcinogenic effect on the oral cavity.
- Excessive alcohol intake, particularly with tobacco use, substantially elevates oral cancer risk.
- Understanding these mechanisms can inform prevention and intervention strategies for oral squamous cell carcinoma.
Related Concept Videos
01:30Skin Cancer
Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
01:03Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
01:03Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
02:37Oxidation of Alcohols
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
01:21Chronic Pancreatitis II: Pathophysiology
Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...