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    Efek Katekin Daun Gambir (Uncaria gambir Roxb) Terhadap Kadar Malondialdehid Serum dan Ekspresi Gen Sirtuin 1 pada Hipokampus Mencit Betina Model Penuaan

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    Date
    2020
    Author
    Situmorang, Novrina
    Advisor(s)
    Zulham
    Feriawati, Lita
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    Abstract
    Aging is a physiological process characterized by progressive loss of physiological integrity that leads to impaired function and increased susceptibility to death. Oxidative stress is one of the factors that cause aging due to an imbalance between the amount of oxidants and antioxidants. In oxidative stress condition, malondialdehyde levels increase. D-galactose can induce aging in various organ systems. D-galactose induces oxidative stress in various organs through increased production of reactive oxygen species (ROS) and advanced glycation endproducts. In oxidative stress condition, sirtuin1 (Sirt1) produces ribose O-acetyl-ADP which, later, is reduced into ribose ADP. Both of them have a protective effect against oxidative stress. Consumption of antioxidants may prevent aging. Gambir contains health-promoting ingredients such as catechins. This study aims to determine the effect of gambier leaves catechin extract on serum malondialdehyde levels and the expression of sirtuin 1 gene in female mice aging model induced by d-galactose. This is an in vivo experiment with post test-only control group study. The samples were 28 female mice which were divided into 4 groups namely P0, P1, P2, and P3. Each group was injected 150 mg/kgBW d-galactose intraperitoneally. P1, P2, and P3 were treated orally with 100, 200, and 400 mg/kgBW gambir leaves catechin extract, respectively. Statistical test use descriftive analisys. There were significant differences in serum MDA levels in all groups (p=0.002) and there were significant differences between the P0 and P2 groups (p=0.010) and between the P0 and P3 groups (p=0.010). Sirtuin1 gene relative expressions decresead in P1 (0,49), P2 (0,74), and P3 (0,43) as compared to P0 (1.00). Conclusion. Gambir leaves catechin extract reduces serum malondialdehyde levels in aging mouse models induced by d-galactose with an optimal dose of 200mg/kgBW. and cannot reduce the relative expression of Sirt1.
     
    Penuaan ditandai dengan hilangnya integritas fisiologis yang mengarah pada gangguan fungsi dan peningkatan risiko kematian. Stres oksidatif menjadi satu faktor risiko penuaan. Ketidakseimbangan jumlah oksidan dengan antioksidan menyebabkan stres oksidatif. Dalam keadaan stress oksidatif, kadar malondialdehid (MDA) mengalami peningkatan. Pemberian d-galaktosa menginduksi penuaan pada berbagai sistem dengan menyebabkan stress oksidatif melalui peningkatan produksi reactive oxygen species (ROS) dan advanced glycation end product. Dalam kondisi stress oksidatif, sirtuin (Sirt) menghasilkan O-acetyl-ADP ribose yang bisa menjadi ADP ribose, dimana keduanya memiliki efek protektif terhadap stress oksidatif. Konsumsi antioksidan dapat mencegah penuaan. Tanaman gambir mengandung banyak katekin sebagai antioksidan. Penelitian ini bertujuan untuk melihat efek katekin daun gambir terhadap kadar MDA serum dan ekspresi gen sirtuin 1 pada hipokampus mencit betina model penuaan yang diinduksi oleh d-galaktosa. Jenis penelitian ini adalah eksperimental in vivo dengan desain penelitian post test-only with control group. Sampel dalam penelitian ini adalah 28 ekor mencit betina yang dibagi dalam 4 kelompok: P0, P1, P2, dan P3. Setiap kelompok diinjeksi 150 mg/kgBB d-galaktosa secara intraperitoneal. Masing-masing kelompok P1, P2, dan P3 diberi 100, 200, dan 400 mg/kgBB katekin daun gambir secara oral. Analisis data dilakukan dengan analisis deskriptif. Terdapat perbedaan yang bermakna kadar MDA serum pada semua kelompok (p=0,002) dan terdapat perbedaan bermakna antara kelompok P0 dengan P2 (p=0,010) dan antara kelompok P0 dengan P3 (p=0,010). Ekspresi relative gen sirtuin 1 mengalami penurunan yaitu P1 (0,49), P2 (0,74), dan P3 (0,43) sebagai perbandingan P0 (1.00) . Kesimpulan: Katekin daun gambir dapat menurunkan kadar MDA serum mencit model penuaan diinduksi oleh d-galaktosa dengan dosis optimal 200mg/kgBB dan tidak dapat menaikkan ekspresi relatif Sirt1.

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    http://repositori.usu.ac.id/handle/123456789/26416
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    • Master Theses (Biomedical Science) [211]

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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV