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Correlation between Genotoxicity and Interleukin-6 in Smokers: A Rodent Model
Aneela Jamil1, Amir Rashid2, Asifa Majeed2
1Department of Biochemistry, Foundation University Medical College, Islamabad, Pakistan.
Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|October 30, 2018
Summary
Cigarette smoke exposure in rats showed a weak positive association between genotoxicity and Interleukin-6 (IL-6). This suggests that smoke-induced inflammation may contribute to DNA damage in smokers.
Area of Science:
- Toxicology
- Molecular Biology
- Genetics
Background:
- Cigarette smoking is a major global health concern.
- It is linked to various diseases, including cancer, due to its genotoxic and inflammatory effects.
- Interleukin-6 (IL-6) is a key inflammatory cytokine implicated in smoking-related pathologies.
Purpose of the Study:
- To investigate the relationship between genotoxicity and IL-6 levels in rats exposed to cigarette smoke.
- To explore the potential role of inflammation in mediating smoke-induced DNA damage.
Main Methods:
- An experimental study involving 70 Sprague Dawley rats exposed to cigarette smoke for 3 months.
- Genotoxicity was assessed using the Cytokinesis-Block Micronucleus (CBMN) assay.
- Interleukin-6 (IL-6) levels were quantified using Enzyme-Linked Immunosorbent Assay (ELISA), and Pearson correlation was employed.
Main Results:
- A weak positive association (r=0.266, p=0.026) was observed between micronuclei frequency (a marker of genotoxicity) and IL-6 levels in smoke-exposed rats.
- The mean IL-6 level was 49.48 ±19.69 ng/L, and the mean micronuclei frequency was 6.77 ±0.73.
Conclusions:
- Cigarette smoke exposure induces a proinflammatory state in rats.
- The findings suggest that smoke-induced inflammation, indicated by elevated IL-6, may contribute to the genotoxicity observed in smokers.
- Genotoxicity and inflammation are interconnected in the context of cigarette smoking.
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