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Abstract Title:

Effect of Mandarin Orange Yogurt on Allergic Conjunctivitis Induced by Conjunctival Allergen Challenge.

Abstract Source:

Invest Ophthalmol Vis Sci. 2017 Jun 1 ;58(7):2922-2929. PMID: 28593244

Abstract Author(s):

Yuko Hara, Atsushi Shiraishi, Yuri Sakane, Yuki Takezawa, Tomoyuki Kamao, Yuichi Ohashi, Sho Yasunaga, Takuya Sugahara

Article Affiliation:

Yuko Hara


Purpose: To evaluate the effects of mandarin orange yogurt containing nobiletin andβ-lactoglobulin on the allergic conjunctivitis induced by a conjunctival allergen challenge (CAC).

Methods: Experiment 1 was performed on 26 asymptomatic patients (age, 25.3± 5.3 years) with proven seasonal allergic conjunctivitis due to cedar pollen. We compared the degree of conjunctivitis induced by CAC before and after ingesting mandarin orange yogurt for 2 weeks. Experiment 2 was a double-blind, placebo-controlled trial performed on 31 patients (age, 32.5 ± 12.2years). A diet containing mandarin orange yogurt was compared to a diet containing yogurt lacking the mandarin orange on the conjunctivitis induced by CAC. The temperature of the inferior bulbar conjunctiva was measured before and 20 minutes after the CAC with an ocular surface thermographer (OST).The degree of conjunctival injection and chemosis was graded by slit-lamp biomicroscopy. The changes in the symptoms were evaluated by a questionnaire.

Results: In experiment 1, the scores of redness (3.07± 3.03 vs. 1.05 ± 1.70), chemosis (2.84 ± 2.27 vs. 0.81 ± 1.11), itching (4.34 ± 3.05 vs. 1.39 ± 2.12), and temperature (0.73 ± 0.42°C vs. 0.45 ± 0.43°C) were significantly lower (P<0.001) after a diet of mandarin orange yogurt for 2 weeks. In experiment 2, the scores of redness (1.03± 0.18 vs. 1.28 ± 0.52; P = 0.0156), itching (1.93 ± 1.92 vs. 2.82 ± 2.21; P = 0.0133), and surface temperature (0.54 ± 0.21°C vs. 0.31 ± 0.25°C; P<0.001) were significantly lower in the mandarin orange yogurt group than in the control yogurt group.

Conclusions: Mandarin orange yogurt can be an effective nutritional intervention for allergic conjunctivitis.

Study Type : Human Study

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Sayer Ji
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