curcumin and Rhinitis--Allergic--Perennial

Allergic rhinitis (AR) is a common disorder that can significantly affect patient quality of life. Previous studies have found that curcumin had anti-inflammatory and antioxidant effects and clinical benefits in cancer and asthma.. To determine the efficacy of curcumin in the treatment of AR and to explore the molecular mechanisms involved.. In a randomized, double-blind study, 241 patients with AR received either placebo or oral curcumin for 2 months. The therapeutic effects of curcumin were evaluated by nasal symptoms and nasal airflow resistance. In addition, the production of interferon γ, interleukin (IL) 4, IL-10, and tumor necrosis factor α from mononuclear cells and IL-8, soluble intercellular adhesion molecule, polyethylene glycol 2, and leukotriene C. Curcumin alleviated nasal symptoms (sneezing and rhinorrhea) and nasal congestion through reduction of nasal airflow resistance. Curcumin was found to exert diverse immunomodulatory effects, including suppression of IL-4, IL-8, and tumor necrosis factor α and increased production of IL-10 and soluble intercellular adhesion molecule. However, curcumin did not affect the release of prostaglandin E. This pilot study provides the first evidence of the capability of curcumin of improving nasal airflow and modulating immune response in patients with AR.

Topics: Adult; Anti-Inflammatory Agents, Non-Steroidal; Biomarkers; Comorbidity; Curcumin; Cytokines; Female; Humans; Leukocyte Count; Male; Nasal Obstruction; Phenotype; Rhinitis, Allergic, Perennial; Rhinomanometry; Treatment Outcome

In the present experiments, the possible role of curcumin in ovalbumin induced allergic rhinitis in guinea pig model was investigated. Various allergic rhinitis symptoms viz sneezing, rubbing frequencies, lacrimation and nasal congestion at various humidity conditions as well as on repeated sensitization were studied. The biochemical changes like serum IgE, IL-4 and nitric oxide (NO) in nasal lavage and eosinophil peroxidase activity in nasal homogenates were determined in allergic rhinitis. Curcumin treatment significantly reduced the symptoms (sneezing, rubbing frequencies, lacrimation and nasal congestion) and improved the histopathological alterations (reduction in inflammatory cells infiltration) of nasal mucosa in allergic rhinitis. Furthermore, curcumin treatment prevented significantly elevation of serum IgE, IL-4, NO in nasal lavage and eosinophil peroxidase in nasal homogenate. In the present experimental findings, we suggest that curcumin is a promising anti-allergic agent that may be useful in the clinical management of allergic rhinitis.

Topics: Acetates; Animals; Cromolyn Sodium; Curcumin; Cyclopropanes; Dose-Response Relationship, Drug; Eosinophil Peroxidase; Female; Gene Expression Regulation; Guinea Pigs; Humidity; Interleukin-4; Male; Nitric Oxide; Ovalbumin; Quinolines; Rhinitis, Allergic; Rhinitis, Allergic, Perennial; Sulfides