Related Experiment Video

Updated: Jun 24, 2025

Construction of Vapor Chambers Used to Expose Mice to Alcohol During the Equivalent of all Three Trimesters of Human Development
15:27

Construction of Vapor Chambers Used to Expose Mice to Alcohol During the Equivalent of all Three Trimesters of Human Development

Published on: July 13, 2014

14.7K

Uncovering the impact of alcohol on internal organs and reproductive health: Exploring TLR4/NF-kB and CYP2E1/ROS/Nrf2

Eason Qi Zheng Kong1, Vetriselvan Subramaniyan1,2, Natasha Sura Anak Lubau1

  • 1Pharmacology Unit, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Selangor, Malaysia.

Animal Models and Experimental Medicine
|June 10, 2024
PubMed

Insights

Chronic alcohol consumption severely damages internal organs and reproductive health by disrupting immune pathways and increasing oxidative stress. Understanding these mechanisms is vital for public health awareness regarding alcohol

Area of Science:

  • Toxicology
  • Immunology
  • Organelle Biology

Background:

  • Alcohol consumption triggers detrimental effects on internal organs and reproductive health.
  • Key molecular pathways implicated include Toll-like receptor 4 (TLR4)/Nuclear factor kappa light chain enhancer of activated B cells (NF-kB) and Cytochrome P450 2E1 (CYP2E1)/reactive oxygen species (ROS)/nuclear factor erythroid 2-related factor 2 (Nrf2).
  • Alcohol-induced gut dysbiosis increases gut permeability, leading to inflammation and liver damage.

Purpose of the Study:

  • To review the detrimental impact of alcohol consumption on internal organs and reproductive health.
  • To elucidate the underlying molecular mechanisms involving inflammatory and oxidative stress pathways.
  • To highlight the multi-organ damage and reproductive health consequences of excessive alcohol intake.

Main Methods:

  • Literature review focusing on molecular mechanisms of alcohol-induced organ damage.
  • Analysis of the roles of TLR4/NF-kB and CYP2E1/ROS/Nrf2 pathways in alcohol toxicity.
  • Examination of alcohol's effects on gut microbiota, liver enzymes, and the hypothalamic-pituitary-gonadal axis.

Main Results:

  • Chronic alcohol exposure disrupts the balance between inflammatory and antioxidant responses via TLR4/NF-kB activation.
  • CYP2E1 metabolism generates ROS, leading to cellular damage, while Nrf2 attempts to counteract oxidative stress.
  • Alcohol intake elevates liver enzymes, ROS, and toxic metabolites, causing heart, brain, and lung damage, and impairs reproductive function.

Conclusions:

  • Alcohol consumption induces significant multi-organ damage and reproductive health issues through complex molecular pathways.
  • The interplay between immune responses, oxidative stress, and metabolic pathways is central to alcohol's toxicity.
  • Increased public awareness of alcohol's profound health impacts is crucial.
Keywords:
alcoholhealth impactinflammationmetabolismmolecular pathways

More Related Videos

Quantification of Ethanol Levels in Zebrafish Embryos Using Head Space Gas Chromatography08:22

Quantification of Ethanol Levels in Zebrafish Embryos Using Head Space Gas Chromatography

Published on: February 11, 2020

5.6K
Moderate Prenatal Alcohol Exposure and Quantification of Social Behavior in Adult Rats11:01

Moderate Prenatal Alcohol Exposure and Quantification of Social Behavior in Adult Rats

Published on: December 14, 2014

9.7K

Related Concept Videos

CNS Depressants: Alcohol and Nicotine01:27

CNS Depressants: Alcohol and Nicotine

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
203
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
2.4K
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
13.6K
Liver Physiology01:30

Liver Physiology

The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of  70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
506
Liver Regeneration01:24

Liver Regeneration

The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
3.2K
NF-κB-dependent Signaling Pathway02:26

NF-κB-dependent Signaling Pathway

The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
7.4K