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A comparative in vitro study of the effects of separate and combined products of Citrus e fructibus and Cydonia e fructibus on immunological parameters of seasonal allergic rhinitis
Louis Bolk Institute, The Netherlands.
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Omvårdnad)
Louis Bolk Institute, The Netherlands.
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2012 (English)In: Mediators of Inflammation, ISSN 0962-9351, E-ISSN 1466-1861, Art. no. 109829- p.Article in journal (Refereed) Published
Abstract [en]

This paper examined the effects of the combined product, Citrus e fructibus/Cydonia e fructibus (Citrus/Cydonia; Citrus and Cydonia: each 0.01 g/mL), and separate products of Citrus (0.01 g/mL) and Cydonia (0.01 g/mL) on the immunological pathways involved in seasonal allergic rhinitis (SAR). Peripheral blood mononuclear cells (PBMCs) from five healthy and five grass pollen-allergic donors were isolated and analyzed in vitro after polyclonal and allergen-specific stimulation of T cells in the presence of the three extracts. The analyses demonstrated acceptable cell survival with no signs of toxicity. Citrus mainly had a selective effect on reducing allergen-specific chronic inflammatory (TNF-α; Citrus compared to Cydonia and Citrus/Cydonia: −87.4 (                                        𝑃                <                0                .                0                0                1                        ) and −68.0 (                                        𝑃                <                0                .                0                5                        ), resp.) and Th2 pathway activity (IL-5; Citrus compared to Cydonia: −217.8 (                                        𝑃                <                0                .                0                1                        ); while, both Cydonia and Citrus/Cydonia mainly affected the induction of the allergen-specific Th1 pathway (IFN-γ; Cydonia and Citrus/Cydonia compared to Citrus: 3.8 (                                        𝑃                <                0                .                0                1                        ) and 3.0 (                                        𝑃                <                0                .                0                1                        ), resp.). Citrus and Cydonia demonstrated different working mechanisms in the treatment of SAR and the combination product did not demonstrate larger effects than the separate preparations. Further effectiveness and efficacy studies comparing the effects of the products on SAR in vivo are indicated.

Place, publisher, year, edition, pages
2012. Art. no. 109829- p.
Keyword [en]
Adolescent; Adult; Cell Survival; Cells, Cultured; Citrus; Cytokines; Female; Humans; Immune System; Leukocytes, Mononuclear; Male; Plant Extracts; Rhinitis, Allergic, Seasonal; Rosaceae; Signal Transduction; T-Lymphocytes; Th1 Cells; Th2 Cells; Young Adult
National Category
Medical and Health Sciences
URN: urn:nbn:se:miun:diva-15541DOI: 10.1155/2012/109829ScopusID: 2-s2.0-84856404066OAI: diva2:468216
Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2013-01-23Bibliographically approved

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