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Title

EFFECTS OF LEVOTHYROXINE ON VISUAL EVOKED POTENTIAL IMPAIRMENT FOLLOWING LOCAL INJECTIONS OF LYSOLECITHIN INTO THE RAT OPTIC CHIASM

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Abstract

 Background: MULTIPLE SCLEROSIS (MS) is a demyelinating disease of the central nervous system which has no any known definitive treatment. Studies have shown that thyroid hormones (THs) in addition to their roles in the development of the nervous system and the production of myelin have important roles in the adult’s brain function. Since the only way to treat MS is the restoration of myelin, the aim of this study was to evaluate the effects of LEVOTHYROXINE on VISUAL EVOKED POTENTIAL (VEP) impairment following local injections of LYSOLECITHIN into the rat OPTIC CHIASM.Methods: To induce demyelination, LYSOLECITHIN was injected into the OPTIC CHIASM of male Wistar rats. VEP recording was used to evaluate demyelination and remyelination before and 10, 17, and 24 days after the LYSOLECITHIN injection. The rats received an intraperitoneal injection of LEVOTHYROXINE with doses 20, 50, and 100mg/kg in different experimental groups.Results: VEP latency and amplitude showed demyelination at 10 and 17 days after an induced lesion in MS group which was reversed at day 24. LEVOTHYROXINE prevented these impairments, especially in high doses.Conclusions: According to the results, LYSOLECITHIN‑induced demyelination at OPTIC CHIASM and VEP impairments can be restored by administration of LEVOTHYROXINE. Therefore, THs probably have positive effects in demyelinating diseases.

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    APA: Copy

    PAYGHANI, COBRA, KHANI, FATEMEH, RAFIEEZADEH, ARYAN, REISI, PARHAM, ALAEI, HOJJATALLAH, & RASHIDI, BAHMAN. (2018). EFFECTS OF LEVOTHYROXINE ON VISUAL EVOKED POTENTIAL IMPAIRMENT FOLLOWING LOCAL INJECTIONS OF LYSOLECITHIN INTO THE RAT OPTIC CHIASM. INTERNATIONAL JOURNAL OF PREVENTIVE MEDICINE, 9(-), 0-0. SID. https://sid.ir/paper/316586/en

    Vancouver: Copy

    PAYGHANI COBRA, KHANI FATEMEH, RAFIEEZADEH ARYAN, REISI PARHAM, ALAEI HOJJATALLAH, RASHIDI BAHMAN. EFFECTS OF LEVOTHYROXINE ON VISUAL EVOKED POTENTIAL IMPAIRMENT FOLLOWING LOCAL INJECTIONS OF LYSOLECITHIN INTO THE RAT OPTIC CHIASM. INTERNATIONAL JOURNAL OF PREVENTIVE MEDICINE[Internet]. 2018;9(-):0-0. Available from: https://sid.ir/paper/316586/en

    IEEE: Copy

    COBRA PAYGHANI, FATEMEH KHANI, ARYAN RAFIEEZADEH, PARHAM REISI, HOJJATALLAH ALAEI, and BAHMAN RASHIDI, “EFFECTS OF LEVOTHYROXINE ON VISUAL EVOKED POTENTIAL IMPAIRMENT FOLLOWING LOCAL INJECTIONS OF LYSOLECITHIN INTO THE RAT OPTIC CHIASM,” INTERNATIONAL JOURNAL OF PREVENTIVE MEDICINE, vol. 9, no. -, pp. 0–0, 2018, [Online]. Available: https://sid.ir/paper/316586/en

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