Turkish journal of medical sciences · 2019
Can apelin play a role in the etiology of tinnitus?
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Ensari Nuray, Gür Özer Erdem, Gür Nilgün, Selçuk Ömer Tarık, Renda Levent, Yılmaz Mustafa Deniz, Öztürk Mehmet Türker, Çekin Yeşim
Аннотация
BACKGROUND/AIM: Tinnitus is seen in 15% of the general population; in 1%–6% of this number, the quality of life is seriously affected by this chronic condition. Chemical, oxidative, and emotional stressors are important in terms of the clinical course of tinnitus. Apelin is an endogenous peptide which is an oxidative stress mediator. It has been shown that the apelin/APJ (apelin junction receptor) system plays various roles in the physiology and pathophysiology of many organs. However, the role of the apelin/APJ system as an oxidative stress mediator in tinnitus is unknown. We investigated the level of apelin in patients with normal hearing and bilateral tinnitus.
MATERIALS AND METHODS: We enrolled patients diagnosed with bilateral idiopathic tinnitus. Tinnitus severity was determined using the tinnitus handicap inventory (THI). We recorded the levels of plasma apelin-13 and biochemical parameters.
RESULTS: The mean apelin level of the control group was higher than that of the patient group (P = 0.002). A significant negative correlation was evident between the apelin level and the THI (r = –0.460, P = 0.003). The triglyceride (TG) level was significantly higher in the patient group than in the control group (P < 0.001).
CONCLUSION: In our study, we found a negative correlation between apelin and tinnitus severity. Thus, apelin may play a role in the pathophysiology of idiopathic tinnitus, and may be prescribed during follow-up to reduce oxidative stress in the future. Further clinical studies on the effects of the apelin/APJ (apelin junction receptor) system and the effects of antioxidants in patients with inflammatory diseases are required.
MATERIALS AND METHODS: We enrolled patients diagnosed with bilateral idiopathic tinnitus. Tinnitus severity was determined using the tinnitus handicap inventory (THI). We recorded the levels of plasma apelin-13 and biochemical parameters.
RESULTS: The mean apelin level of the control group was higher than that of the patient group (P = 0.002). A significant negative correlation was evident between the apelin level and the THI (r = –0.460, P = 0.003). The triglyceride (TG) level was significantly higher in the patient group than in the control group (P < 0.001).
CONCLUSION: In our study, we found a negative correlation between apelin and tinnitus severity. Thus, apelin may play a role in the pathophysiology of idiopathic tinnitus, and may be prescribed during follow-up to reduce oxidative stress in the future. Further clinical studies on the effects of the apelin/APJ (apelin junction receptor) system and the effects of antioxidants in patients with inflammatory diseases are required.