MELATONIN TREATMENT REDUCES ASTROGLIOSIS AND APOPTOSIS IN RATS WITH TRAUMATIC BRAIN INJURY

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BABAEE ABDOLREZA; EFTEKHAR VAGHEFI SEYED HASSAN; ASADI SHEKAARI MAJID; SHAHROKHI NADER; DEHGHANI SOLTANI SAMEREH; MALEKPOUR AFSHAR REZA; BASIRI MOHSEN

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Journal: Iranian Journal of Basic Medical Sciences Year:2015 | Volume:18 | Issue:9 Page(s): 867-872

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Title

MELATONIN TREATMENT REDUCES ASTROGLIOSIS AND APOPTOSIS IN RATS WITH TRAUMATIC BRAIN INJURY

Author(s)

Keywords

APOPTOSIS

ASTROGLIOSIS

GFAP

MELATONIN

TRAUMATIC BRAIN INJURY

Abstract

Objective (s): MELATONIN is known as an anti‐inflammatory agent, and it has been proven to exert neuroprotection through inhibition of cell death (APOPTOSIS) in several models of brain injury. Secondary injury following the primary TRAUMATIC BRAIN INJURY (TBI) results in glial cells activation, especially astrocytes. In fact, astrocyte activation causes the production of pro‐inflammatory cytokines that may lead to secondary injury. Since most TBI research studies have focused on injured neurons and paid little attention to glial cells, the aim of current study was to investigate the effects of MELATONIN against astrocytes activation (astrogliosis), as well as inhibition of APOPTOSIS in brain tissue of male rats after TBI.Materials and Methods: The animals were randomly allocated into five groups: sham group, TBI+ vehicle group (1% ethanol in saline) and TBI+ MELATONIN groups (5 mg/kg, 10 mg/kg and 20 mg/kg). All rats were intubated and then exposed to diffuse TBI, except for the sham group. Immunohistochemical methods were conducted using glial fibrillary acidic protein (GFAP) marker and TUNEL assay to evaluate astrocyte reactivity and cell death, respectively.Results: The results showed that based on the number of GFAP positive astrocytes in brain cortex, ASTROGLIOSIS was reduced significantly (P<0.05) in MELATONIN‐ treated groups (no dose dependent) compared to the vehicle group. Furthermore, based on TUNEL results, MELATONIN treatment considerably reduced the number of apoptotic cells (P<0.05).Conclusion: In total, the present findings suggest that MELATONIN treatment following TBI diminishes astrocyte reactivity and neuronal cells APOPTOSIS in brain cortex in the rat model.

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APA: Copy

BABAEE, ABDOLREZA, EFTEKHAR VAGHEFI, SEYED HASSAN, ASADI SHEKAARI, MAJID, SHAHROKHI, NADER, DEHGHANI SOLTANI, SAMEREH, MALEKPOUR AFSHAR, REZA, & BASIRI, MOHSEN. (2015). MELATONIN TREATMENT REDUCES ASTROGLIOSIS AND APOPTOSIS IN RATS WITH TRAUMATIC BRAIN INJURY. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, 18(9), 867-872. SID. https://sid.ir/paper/668618/en

Vancouver: Copy

BABAEE ABDOLREZA, EFTEKHAR VAGHEFI SEYED HASSAN, ASADI SHEKAARI MAJID, SHAHROKHI NADER, DEHGHANI SOLTANI SAMEREH, MALEKPOUR AFSHAR REZA, BASIRI MOHSEN. MELATONIN TREATMENT REDUCES ASTROGLIOSIS AND APOPTOSIS IN RATS WITH TRAUMATIC BRAIN INJURY. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES[Internet]. 2015;18(9):867-872. Available from: https://sid.ir/paper/668618/en

IEEE: Copy

ABDOLREZA BABAEE, SEYED HASSAN EFTEKHAR VAGHEFI, MAJID ASADI SHEKAARI, NADER SHAHROKHI, SAMEREH DEHGHANI SOLTANI, REZA MALEKPOUR AFSHAR, and MOHSEN BASIRI, “MELATONIN TREATMENT REDUCES ASTROGLIOSIS AND APOPTOSIS IN RATS WITH TRAUMATIC BRAIN INJURY,” IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, vol. 18, no. 9, pp. 867–872, 2015, [Online]. Available: https://sid.ir/paper/668618/en

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