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Open Access Maced J Med Sci. 2018 Nov 8;6(11):1953-1958. doi: 10.3889/oamjms.2018.440. eCollection 2018 Nov 25.

Turmeric Extract Supplementation Reduces Tau Protein Level in Repetitive Traumatic Brain Injury Model.

Author information

1
Department of Neurosurgery, Medical Faculty Universitas Sumatera Utara, Medan, Indonesia.
2
Department of Neurology, Medical Faculty Universitas Sumatera Utara, Medan, Indonesia.
3
Department of Pharmacology and Therapeutic, Medical Faculty Universitas Sumatera Utara, Medan, Indonesia.

Abstract

BACKGROUND:

Repetitive traumatic brain injury (RTBI) has gained much attention in this decade, especially in contact sports athletes and military personals. This injury is correlated with early neurodegenerative changes that are marked with the increased of tau protein. Turmeric extract (TE) is a well-known anti-inflammation and antioxidant that decreases tau protein expression in neurodegenerative disease.

AIM:

This study aimed to prove the effect of TE on tau protein level after RTBI.

METHODS:

Forty Sprague Dawley mice were divided into four groups, i.e. negative sham control group, the control group, and two treatment groups. A weight drop model was used by applying a 40-gram mass that was dropped from a 1-meter height onto the vertex of the head, with a total frequency of 12 times, divided into 4 days (day 0, 1, 3, and 7; 3 traumas on each day). TE was given to all treatment groups with 500 mg/kg BW doses once daily. The first treatment group had TE for seven days along the trauma. The second treatment group had pretreatment TE extract, given from seven days before first trauma and continued along the trauma protocol days. Tau protein level was measured on brain and serum using ELISA method.

RESULTS:

There was a significant reduction of tau protein level in both treatment groups compared to trauma group, either in serum or brain, but we also found significant differences regarding brain tau level between the treatment and pretreatment group.

CONCLUSION:

This study might provide evidence of with the role of pretreatment TE in RTBI.

KEYWORDS:

Repetitive traumatic brain injury; Tau protein; Turmeric extract

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