Efficacy of chlorophyll c2 for seasonal allergic rhinitis: single-center double-blind randomized control trial

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• 作者：Takashi Fujiwara ; Naoya Nishida ; Jumpei Nota…
• 关键词：Complementary therapies ; Chlorophyll c2 ; Sargassum horneri ; Seaweed ; Allergic rhinitis
• 刊名：European Archives of Oto-Rhino-Laryngology
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：273
• 期：12
• 页码：4289-4294
• 全文大小：550 KB
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Otorhinolaryngology
  Neurosurgery
  Head and Neck Surgery
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1434-4726
• 卷排序：273

文摘

Chlorophyll c2 extracted from Sargassum horneri improved allergic symptoms in an animal model of allergic rhinitis. In the present study, we explored the efficacy of chlorophyll c2 in patients with seasonal allergic rhinitis. This was a single-center, randomized, double-blind placebo-controlled trial. Sixty-six patients aged 20–43 years, each with a 2-year history of seasonal allergic rhinitis, were randomly assigned to receive either a single daily dose (0.7 mg) of chlorophyll c2 or placebo for 12 weeks. The use of medications including H1-antihistamines and topical nasal steroids was recorded by rescue medication scores (RMSs) noted after 4, 8, and 12 weeks of treatment. Disease-specific quality of life was measured using the Japan Rhinitis Quality of Life Questionnaire (JRQLQ) both before and after 4, 8, and 12 weeks of treatment. The RMS at 8 weeks was significantly better in the chlorophyll c2 than the placebo group (mean RMS difference = −3.09; 95 % confidence interval = −5.96 to −0.22); the mean RMS at 4 weeks was only slightly better in the chlorophyll c2 group. The JRQLQ scores did not differ significantly between the two groups. Chlorophyll c2 would have a potential to be an alternative treatment for allergic rhinitis.