Meng-Tian Bai1,2,3,4,5,6, Yun Li7, Zhu-Lin Hu1,2,3,4,5. 1. Department of Ophthalmology, Fourth Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China. 2. Yunnan Eye Institute, Kunming 650032, Yunnan Province, China. 3. Key Laboratory of Yunnan Province for the Prevention and Treatment of Ophthalmology, Kunming 650032, Yunnan Province, China. 4. Provincial Innovation Team for Cataract and Ocular Fundus Disease, Fourth Affiliated Hospital of Kunming Medical University, Kunming 650032, Yunnan Province, China. 5. Expert Workstation of Yao Ke, Kunming 650032, Yunnan Province, China. 6. Department of Ophthalmology, Suining Central Hospital, Suining 629000, Sichuan Province, China. 7. Department of Oncology, Suining Central Hospital, Suining 629000, Sichuan Province, China.
Abstract
AIM: To investigate the feasibility and mechanism of immune tolerance in allergic conjunctivitis. METHODS: The allergic conjunctivitis immune tolerance mice model was established by ragweed pollen (RW) and the related cytokines were detected. The mice were divided into 9 groups and the maslinic acid (MA) or PBS were given for different group after modeling. The expression levels of chemokine ligand 5 (CCL5) and P-65 in the conjunctival tissue were analyzed by immunohistochemistry, quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. The percentage of interleukin-17 (IL-17) and CD4+CD25+ in the splenocyte supernatant was analyzed by flow cytometry. Furthermore, the serum and splenocyte supernatant concentration of total-IgE, interleukin-10 (IL-10), and IL-17 was analyzed by enzyme linked immune response (ELISA). RESULTS: After the model was established, symptoms of conjunctivitis were alleviated, the level of P-65, CCL5, IL-17, and total-IgE was raised, while the expression of IL-10, CD4+CD25+ was decreased. This result fully demonstrated that a typical IL-17/regulatory-T-cells (Treg cells) imbalance and NF-κB activation. When the NF-κB signal pathway was suppressed, it showed that there was a further relief of conjunctivitis in mice. At the same time, the expression of total-IgE, IL-17, and CCL5 was decreased and the expression of anti-inflammatory factor (IL-10, CD4+CD25+) was increased. CONCLUSION: In the state of immune tolerance, symptoms of conjunctivitis in mice are alleviated, the Th-17 cells of allergic conjunctivitis mice are inhibited, and Treg cells activity is enhanced. International Journal of Ophthalmology Press.
AIM: To investigate the feasibility and mechanism of immune tolerance in allergic conjunctivitis. METHODS: The allergic conjunctivitis immune tolerance mice model was established by ragweed pollen (RW) and the related cytokines were detected. The mice were divided into 9 groups and the maslinic acid (MA) or PBS were given for different group after modeling. The expression levels of chemokine ligand 5 (CCL5) and P-65 in the conjunctival tissue were analyzed by immunohistochemistry, quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot. The percentage of interleukin-17 (IL-17) and CD4+CD25+ in the splenocyte supernatant was analyzed by flow cytometry. Furthermore, the serum and splenocyte supernatant concentration of total-IgE, interleukin-10 (IL-10), and IL-17 was analyzed by enzyme linked immune response (ELISA). RESULTS: After the model was established, symptoms of conjunctivitis were alleviated, the level of P-65, CCL5, IL-17, and total-IgE was raised, while the expression of IL-10, CD4+CD25+ was decreased. This result fully demonstrated that a typical IL-17/regulatory-T-cells (Treg cells) imbalance and NF-κB activation. When the NF-κB signal pathway was suppressed, it showed that there was a further relief of conjunctivitis in mice. At the same time, the expression of total-IgE, IL-17, and CCL5 was decreased and the expression of anti-inflammatory factor (IL-10, CD4+CD25+) was increased. CONCLUSION: In the state of immune tolerance, symptoms of conjunctivitis in mice are alleviated, the Th-17 cells of allergic conjunctivitismice are inhibited, and Treg cells activity is enhanced. International Journal of Ophthalmology Press.
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