How Propolis Prevents Nicotine-Related Lung Damage

Area of Science:

• Pulmonology
• Toxicology
• Pharmacology

Background:

• Nicotine exposure is a significant risk factor for pulmonary damage.
• Propolis, a natural resinous mixture, possesses antioxidant and anti-inflammatory properties.
• Investigating natural compounds for mitigating toxicant-induced organ damage is crucial.

Purpose of the Study:

• To evaluate the protective efficacy of propolis extract against nicotine-induced lung injury in a rat model.
• To assess the histological changes in lung tissue following nicotine exposure and propolis treatment.

Main Methods:

• Wistar albino rats were divided into two groups: nicotine control and nicotine + propolis extract.
• Nicotine (10 mg/kg) was administered daily for 8 weeks.
• Propolis extract (200 mg/kg/day) was administered orally to the treatment group concurrently.

Main Results:

• The nicotine + propolis extract group exhibited significantly reduced bronchiole damage, hemorrhage, vascular congestion, and cellular infiltration compared to the nicotine group.
• Histological examination revealed diminished inflammation and preserved alveolar architecture in rats treated with propolis extract.
• Nicotine exposure alone led to severe inflammation, bronchial epithelial damage, and vascular congestion.

Conclusions:

• Propolis extract demonstrates a protective effect against nicotine-induced pulmonary damage.
• The mechanism may involve the Nrf2/HO-1 signaling pathway and suppression of iNOS and TNF-α.
• Human clinical trials are warranted to explore propolis's therapeutic potential for nicotine-related lung damage.