Related Experiment Video
Updated: Jul 7, 2026
08:58
Using Caenorhabditis elegans for Studying Trans- and Multi-Generational Effects of Toxicants
Published on: July 29, 2019
Genotoxicity induced by Eugenia caryophyllata infusion
Patrícia Estevam dos Santos1, Lucila Carmem Monte Egito, Sílvia Regina Batistuzzo de Medeiros
1Departamento de Biologia Celular e Genética, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil.
Journal of Toxicology and Environmental Health. Part A
|February 29, 2008
Summary
Clove infusion showed low mutagenic potential but caused oxidative DNA damage and cytotoxicity in specific assays. Further research is needed to understand its genotoxic effects.
Area of Science:
- Pharmacology
- Toxicology
- Molecular Biology
Background:
- Eugenia caryophyllata (clove) possesses various therapeutic properties.
- The genotoxic potential of clove infusion requires thorough investigation.
Purpose of the Study:
- To evaluate the genotoxic potential of Eugenia caryophyllata infusion.
- To investigate the mechanisms underlying its cytotoxic effects.
Main Methods:
- Bacterial assays including SOS chromotest and Salmonella reversion assay.
- Cell-free assays assessing DNA strand breaks and oxidative damage.
- Forward mutagenesis assay using a specific bacterial strain (CC104 mutMmutY).
Main Results:
- Negative genotoxicity results in SOS chromotest and Salmonella assays.
- Increased mutagenesis and high cytotoxicity observed in the CC104 mutMmutY strain.
- Evidence of DNA strand breaks and FPG/MutM-recognized sites after plasmid treatment.
Conclusions:
- Clove infusion exhibits oxidative DNA damage with low mutagenic potential.
- Oxidative DNA damage may contribute to the cytotoxicity of clove infusion.
- Further studies are warranted to fully elucidate the genotoxicity of E. caryophyllata.
Related Concept Videos
01:25Mutagenicity and Carcinogenicity
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
01:11Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
01:07Teratogenicity
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...
01:24Drug Toxicity: Dose-Dependent Reactions
Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
01:25Bioactivation and Tissue Toxicity
Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
01:24Drug Toxicity: Risk factors
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...