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- W4210716319 abstract "Abstract Background : Platelet-activating factor (PAF) has been suggested to be a potent inflammatory mediator in Allergic rhinitis (AR) pathogenesis. Vitamin E is known as a potential therapeutic agent for airway allergic inflammation. This study aimed to investigate the beneficial effects of palm-derived Tocotrienol-rich fraction (TRF) on PAF-induced AR in a rat model. Methods : Sprague Dawley rats were randomly assigned into 3 groups: Control, PAF-induced AR and PAF-induced AR with TRF treatment. To induce AR, 50 μl of 16 μg/ml PAF was nasally instilled into each nostril. From day 1 to 7 after AR induction, 10 μl of 16 μg/μl TRF was delivered intranasally to the TRF treatment group. Complete upper skulls were collected for histopathological evaluation on day 8. Results : The average severity scores of AR were significantly higher in the PAF-induced AR rats compared to both control and PAF-induced AR with TRF treatment. The histologic examination of the nasal structures showed moderate degree of inflammation and polymorphonuclear cells infiltration in the lamina propria, mucosa damage and vascular congestion in the PAF-induced AR rats. TRF was able to ameliorate the AR symptoms by restoring the nasal structures back to normal. H&E staining demonstrated a statistically significant benefit upon TRF treatment, where minimal degree of inflammation, and a reduction in the infiltration of polymorphonuclear cells, mucosa damage and vascular congestion were observed. Conclusion : TRF exhibited symptomatic relief action in AR potentially due to its antioxidant, anti-inflammatory and anti-allergic properties." @default.
- W4210716319 created "2022-02-08" @default.
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- W4210716319 date "2022-02-01" @default.
- W4210716319 modified "2023-09-26" @default.
- W4210716319 title "Therapeutic Effects of Tocotrienol-Rich Fraction on Rhinitis Symptoms in Platelet-Activating Factor Induced Allergic Rhinitis" @default.
- W4210716319 doi "https://doi.org/10.21203/rs.3.rs-1258949/v1" @default.
- W4210716319 hasPublicationYear "2022" @default.
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