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The effect of alpha-lipoic acid on liver damage induced by extremely low-frequency electromagnetic fields in a rat
Nur Aydinbelge Dizdar1, Aylin Akbulut2, Gokhan Koca2
1Department of Nuclear Medicine, Ankara Etlik City Hospital, Ankara, Turkiye.
Abstract:
This study aimed to investigate the effect of alpha-lipoic acid (ALA) on liver damage caused by extremely low-frequency magnetic fields (ELF-MFs) in rats. Thirty-two male rats were arbitrarily assigned into four groups: Group 1 (control group), Group 2 (ELF-MF exposure group), Group 3 (ELF-MF exposure + ALA administration), and Group 4 (sham group). Groups 2 and 3 were exposed to ELF-MF at 2 mT intensity emitted by two Helmholtz coils for 4 hours/day throughout 30 days. Group 3 received ALA intraperitoneally (100 mg/kg/day) 1 hour prior to each exposure for 30 days. Group 4 was placed inside the coils, but the generator was turned off. Histopathological analysis of the liver revealed statistically significant increases in hyperemia, inflammation, fibrosis, vacuolization, multiple nuclei, and biliary proliferation in Group 2 compared to all other groups. Immunohistochemical evaluation showed that Group 2 had statistically significantly higher TUNEL and caspase-3 levels than all other groups. ELF-MF-induced alterations, including hyperemia, inflammation, vacuolization, and multiple nuclei, were significantly reduced in Group 3 compared with Group 2. However, no significant difference was observed between Group 2 and Group 3 regarding bile duct proliferation or fibrosis. No pathological changes were observed in Groups 1 and 4. ALA administration effectively reduced some histopathological changes caused by ELF-MF, particularly hyperemia, inflammation, vacuolization, and multiple nuclei, but did not improve fibrosis or biliary proliferation. Additionally, it reduced TUNEL and caspase-3 expression. Our findings suggest that ALA exhibits anti-apoptotic and anti-inflammatory effects against ELF-MF-induced liver damage.
Insights
Alpha-lipoic acid (ALA) shows protective effects against liver damage induced by extremely low-frequency magnetic fields (ELF-MFs) in rats. ALA reduced inflammation and apoptosis but did not fully prevent fibrosis or biliary proliferation.
Area of Science:
- Environmental Health
- Toxicology
- Biochemistry
Background:
- Extremely low-frequency magnetic fields (ELF-MFs) are ubiquitous in modern environments.
- Potential health risks associated with ELF-MF exposure, particularly to organs like the liver, require investigation.
- Alpha-lipoic acid (ALA) is a potent antioxidant with known protective properties.
Purpose of the Study:
- To evaluate the protective effects of alpha-lipoic acid (ALA) against liver damage induced by extremely low-frequency magnetic fields (ELF-MFs).
- To assess the impact of ALA on histopathological and biochemical markers of liver injury in an experimental rat model.
Main Methods:
- Thirty-two male rats were divided into control, ELF-MF exposure, ELF-MF + ALA, and sham groups.
- ELF-MF exposure was administered at 2 mT for 4 hours/day over 30 days.
- ALA was administered intraperitoneally (100 mg/kg/day) prior to ELF-MF exposure in the treatment group.
- Liver tissues were analyzed using histopathology and immunohistochemistry (TUNEL, caspase-3).
Main Results:
- ELF-MF exposure significantly increased liver damage markers including hyperemia, inflammation, fibrosis, vacuolization, and multiple nuclei.
- Immunohistochemical analysis revealed significantly higher TUNEL and caspase-3 levels in the ELF-MF exposed group.
- ALA administration significantly reduced hyperemia, inflammation, vacuolization, and multiple nuclei, and decreased TUNEL and caspase-3 expression.
- ALA did not significantly improve fibrosis or biliary proliferation compared to ELF-MF exposure alone.
Conclusions:
- Alpha-lipoic acid (ALA) demonstrates significant anti-apoptotic and anti-inflammatory effects against ELF-MF-induced liver injury in rats.
- ALA partially mitigates ELF-MF-induced liver damage, highlighting its potential therapeutic role.
- Further research is needed to explore ALA's efficacy in preventing fibrosis and biliary proliferation associated with ELF-MF exposure.
