Psoriasis is a chronic, non - communicable skin disease characterized by scaly, red, and itchy patches on the skin. It affects approximately 2 - 3% of the global population, and its pathophysiology involves a complex interplay of genetic, immunological, and environmental factors. The conventional treatments for psoriasis, such as topical corticosteroids, phototherapy, and systemic immunosuppressants, often come with various side - effects, leading researchers to explore alternative and complementary therapeutic options. One such emerging area of interest is the use of probiotics, specifically Lactobacillus Reuteri, in the treatment of psoriasis.
The Microbiome and Psoriasis
The human microbiome, the collection of microorganisms that live on and within our bodies, has been increasingly recognized as a crucial factor in maintaining health and influencing disease states. In the case of psoriasis, alterations in the gut and skin microbiome have been observed. The gut microbiome plays a significant role in modulating the immune system. A healthy gut microbiome helps to maintain immune homeostasis, while dysbiosis, an imbalance in the gut microbial community, can lead to abnormal immune responses.
Psoriasis patients often exhibit a different gut microbiota composition compared to healthy individuals. There is a decrease in beneficial bacteria and an increase in potentially harmful ones. This dysbiosis may contribute to the systemic inflammation seen in psoriasis. The gut - skin axis theory posits that changes in the gut microbiome can affect the skin's health and vice versa. Therefore, restoring the balance of the gut microbiome through the use of probiotics could potentially have a positive impact on psoriasis symptoms.
Lactobacillus Reuteri: An Overview
Lactobacillus Reuteri is a well - studied probiotic bacterium that naturally resides in the human gastrointestinal tract, as well as in the oral cavity and female genital tract. It has been associated with a wide range of health benefits. Lactobacillus Reuteri can produce antimicrobial substances such as reuterin, which has broad - spectrum antibacterial activity. This helps to inhibit the growth of pathogenic bacteria in the gut, thereby promoting a healthy gut microbiome.
Moreover, Lactobacillus Reuteri has immunomodulatory properties. It can interact with immune cells in the gut - associated lymphoid tissue (GALT), influencing the production of cytokines. Cytokines are small proteins that play a crucial role in the immune response. In psoriasis, there is an overproduction of pro - inflammatory cytokines such as TNF - α, IL - 17, and IL - 23. By modulating cytokine production, Lactobacillus Reuteri may help to reduce the systemic inflammation associated with psoriasis.
Evidence for the Use of Lactobacillus Reuteri in Psoriasis Treatment
Although research on the direct use of Lactobacillus Reuteri in psoriasis treatment is still in its early stages, there are several lines of evidence that suggest its potential efficacy.
- Animal Studies: Some animal studies have shown that probiotic supplementation can improve skin conditions similar to psoriasis. For example, in mouse models of psoriasis - like dermatitis, the administration of certain probiotic strains led to a reduction in skin inflammation, thickness, and the production of pro - inflammatory cytokines. While these studies did not specifically use Lactobacillus Reuteri, they demonstrate the general potential of probiotics in modulating skin inflammation.
- Immunomodulatory Effects: As mentioned earlier, Lactobacillus Reuteri can modulate the immune system. In in vitro studies, it has been shown to regulate the production of cytokines. By promoting the production of anti - inflammatory cytokines and reducing the production of pro - inflammatory cytokines, it may help to alleviate the inflammation associated with psoriasis.
- Impact on Gut Microbiome: By colonizing the gut and competing with pathogenic bacteria, Lactobacillus Reuteri can help to restore gut dysbiosis. A healthy gut microbiome is essential for proper immune function. Restoring the balance of the gut microbiota may have a downstream effect on the skin, reducing the symptoms of psoriasis.
Comparison with Other Lactobacillus Species
There are several other Lactobacillus species that have also been investigated for their potential in treating psoriasis. For example, Lactobacillus Fermentum has been shown to have immunomodulatory effects and can improve gut health. Similarly, Lactobacillus Salivarius and Lactobacillus Paracasei have also been studied for their beneficial effects on the immune system and gut microbiome.


However, Lactobacillus Reuteri has some unique properties. Its ability to produce reuterin gives it an edge in inhibiting the growth of pathogenic bacteria. Additionally, its well - characterized immunomodulatory effects make it a promising candidate for psoriasis treatment. Each Lactobacillus species may have different mechanisms of action, and a combination of these species could potentially have synergistic effects in treating psoriasis.
Challenges and Limitations
Despite the promising potential of Lactobacillus Reuteri in psoriasis treatment, there are several challenges and limitations.
- Lack of Large - Scale Clinical Trials: Most of the evidence so far comes from in vitro and animal studies. There is a need for large - scale, well - designed clinical trials to confirm the efficacy and safety of Lactobacillus Reuteri in psoriasis patients.
- Strain - Specific Effects: Different strains of Lactobacillus Reuteri may have different properties. The efficacy of a particular strain in treating psoriasis may vary, and more research is needed to identify the most effective strains.
- Delivery and Viability: Ensuring the survival and viability of Lactobacillus Reuteri from production to consumption is crucial. The bacteria need to be able to withstand the acidic environment of the stomach and reach the gut in sufficient numbers to exert their beneficial effects.
Conclusion and Call to Action
In conclusion, the use of Lactobacillus Reuteri in the treatment of psoriasis shows great promise. Its immunomodulatory properties and ability to restore gut dysbiosis make it a potential candidate for alternative or complementary therapy. While more research is needed to fully understand its efficacy and safety, the preliminary evidence is encouraging.
As a Lactobacillus Reuteri supplier, we are committed to providing high - quality probiotic products. Our Lactobacillus Reuteri strains are carefully selected and produced under strict quality control measures to ensure their viability and efficacy. If you are interested in exploring the potential of Lactobacillus Reuteri for psoriasis treatment, either for research purposes or for the development of new products, we invite you to contact us for procurement and further discussions. We believe that together, we can contribute to the advancement of psoriasis treatment and improve the lives of patients.
References
- Al - Rasadi, K., & Al - Kindi, A. (2018). The role of gut microbiota in psoriasis: A review. Journal of Dermatological Treatment, 29(6), 522 - 527.
- Marco, M. L., Hevia, A., Douillard, F. P., & de Vos, W. M. (2017). Evolution, diversity, and ecological functions of lactobacilli. Microbiology and Molecular Biology Reviews, 81(3).
- Ooi, Y. L., & Liong, M. T. (2010). Probiotics in dermatology. Clinics in Dermatology, 28(4), 435 - 441.
- Schippa, S., Pizzuti, L., & Biancheri, P. (2018). The gut - skin axis: from basic science to the clinic. Gut Microbes, 9(4), 387 - 395.




