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  • Title: Influence of Ginkgo Biloba extract (EGb 761) on expression of IL-1 Beta, IL-6, TNF-alfa, HSP-70, HSF-1 and COX-2 after noise exposure in the rat cochlea.
    Author: Dogan R, Sjostrand AP, Yenıgun A, Karatas E, Kocyigit A, Ozturan O.
    Journal: Auris Nasus Larynx; 2018 Aug; 45(4):680-685. PubMed ID: 29042071.
    Abstract:
    OBJECTIVE: The objective of this study was to investigate the influence of Ginkgo Biloba in early treatment of noise induced hearing loss on expression of IL-6, IL-1 Beta, TNF-alfa, HSP-70, HSF-1 and COX-2 in the rat cochlea. METHODS: Thirty two female rats were randomly divided into four groups (Acoustic Trauma, Ginkgo Biloba, Acoustic Trauma+Ginkgo Biloba, Non Treatment). Auditory brainstem response (ABR) was applied in all the groups. At the end of the study, IL-1Beta, IL-6, TNF-alpha, HSP-70, HSF-1 and COX-2 were studied in cochlear tissue with ELISA and Western blot analysis. RESULTS: There were significant increases in ABR values measured at days 1 and 7 compared to baseline values in Group 3. IL-1 Beta, IL-6 and TNF-alpha values were significantly higher in Group 1 than in the other groups. Whereas HSP-70 and HSF-1 values were found to be significantly lower in Group 1 compared to those in Group 2 and Group 3. COX-2 of Group 1 was significantly higher than the other groups. CONCLUSION: Ginkgo Biloba is helpful in the treatment of noise induced hearing loss and exerts its effect by inhibiting expression of IL-1 Beta, IL-6, TNF-alpha and COX-2 and increasing HSP-70 and HSF-1 values in rat cochlea.
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