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Propolis inhibited Bax expression and increased neuronal count of hippocampal area CA1 in rats receiving sodium nitrite

Kuswati Kuswati, Ety Sari Handayani, Zainuri Sabta Nugraha, Fishella Aprista Rahmanti, Zulfikar Loka Wicaksana, Muhammad Zhafirrahman
Submission date: Monday, 17 December 2018
Published date: Tuesday, 18 June 2019
DOI: http://dx.doi.org/10.18051/UnivMed.2019.v38.73-80

Abstract


Background
Sodium nitrite induces hypoxia and oxidative stress in the hippocampus, decreasing the number of neurons in the hippocampus and cognitive function. Propolis contains chrysin that has antioxidant effects that are expected to inhibit neuronal damage in the hippocampus. This study aims to determine the effects of propolis on the expression Bcl-2-associated X protein (Bax) and the number of neurons in the rat hippocampus receiving sodium nitrite.

Methods
This study of laboratory experimental design was conducted on 18 male Wistar strain rats (Rattus norvegicus), they were randomized into 3 groups: one control group (K) received sodium nitrite and two intervention groups  (P1 and P2) received sodium nitrite and propolis at doses of 100 and 200 mg/kgBW. Treatment with sodium nitrite and propolis were given for 60 days, followed by termination. The number of neurons and Bax expression in the hippocampal CA1 area were measured. One-way ANOVA was used to analyze the data.

Results
There were significant differences in Bax expression between group K and groups P1 and P2 (p<0.001). The lowest number of neurons in the hippocampal CA1 area was in the K group. There were significant differences in the number of neurons between control (K) group and groups P1 and P2 (p<0.001).

Conclusion
Propolis inhibited the expression of Bax and decreased the number of neurons in the hippocampal CA1 area of rats receiving sodium nitrite. This study provides information about the benefits of propolis as an antioxidant in the brain.

Keywords


Propolis; Bax; hippocampus; sodium nitrite

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References


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