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Published on: October 23, 2013
Lycopene Inhibits Propagation of Chlamydia Infection
Naylia A Zigangirova1, Elena Y Morgunova1, Elena D Fedina1
1Gamaleya Center of Epidemiology and Microbiology, Ministry of Health, Moscow, Russia.
Abstract:
Chlamydiaceae is a family of obligate intracellular pathogenic bacteria with similar developmental cycles and cell biology responsible for a wide range of diseases in different hosts including genital and eye inflammatory diseases, arthritis, and inflammatory diseases of the respiratory and cardiovascular systems. In the present paper, we report that lycopene, one of the main dietary carotenoids, which is present in tomato and some other fruits, has a strong inhibitory effect on C. trachomatis and C. pneumoniae infections in alveolar macrophages. This finding was documented by both immunofluorescence analysis and electron microscopy. It was noted that lycopene treatment inhibited intracellular phase of the chlamydial developmental cycle and resulted in a significant loss of infectious progeny. The antichlamydial effect of lycopene was also confirmed in a clinical setting. There was a significant reduction of IgG antibodies against C. pneumoniae in the serum of volunteers treated for a month with oral ingestion of 7 mg of lycopene. Additional studies are needed to further explore the antichlamydial activity of lycopene and its possible effect on C. pneumoniae in relation to antichlamydial activity of lycopene to mechanisms of atherosclerosis.
Insights
Lycopene, a tomato carotenoid, effectively inhibits Chlamydia trachomatis and Chlamydia pneumoniae infections in cells and reduces antibodies in humans. Further research into its antichlamydial effects is warranted.
Area of Science:
- Microbiology
- Immunology
- Nutritional Science
Background:
- Chlamydiaceae are obligate intracellular bacteria causing various diseases.
- Dietary carotenoids like lycopene are known for their antioxidant properties.
Purpose of the Study:
- To investigate the antichlamydial activity of lycopene against Chlamydia trachomatis and Chlamydia pneumoniae.
- To evaluate the effect of lycopene on the chlamydial developmental cycle and infectious progeny.
- To assess the clinical efficacy of oral lycopene in reducing Chlamydia pneumoniae antibodies.
Main Methods:
- Immunofluorescence analysis and electron microscopy were used to study intracellular infections.
- In vitro experiments were conducted on alveolar macrophages.
- A clinical study involved volunteers ingesting oral lycopene.
Main Results:
- Lycopene demonstrated a strong inhibitory effect on C. trachomatis and C. pneumoniae infections in vitro.
- Lycopene inhibited the intracellular developmental cycle and reduced infectious progeny.
- Oral lycopene significantly reduced IgG antibodies against C. pneumoniae in human volunteers.
Conclusions:
- Lycopene exhibits significant antichlamydial activity against C. trachomatis and C. pneumoniae.
- Lycopene may serve as a potential therapeutic agent for chlamydial infections.
- Further studies are needed to explore lycopene's mechanisms and potential in atherosclerosis.
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