Pemberian Ekstrak Daun Gandarusa (Justicia gendarussa Burm. f.) Menurunkan Kadar F2-isoprostan Urin Tikus Wistar (Rattus norvegicus) Jantan yang Diinduksi Latihan Fisik Berlebih

Abstract

Abstract: Excessive physical activity increases the consumption of oxygen which can result in increased levels of reactive oxygen species (ROS) causing oxidative stress characterized by the elevation of F2-isoprostane as a byproduct of lipid peroxidation. Willow (Justicia gendarussa Burm. f.) has an antioxidant activity that is able to inhibit and break the chain reaction of free radicals and prevent lipid peroxidation. This study was aimed to prove that willow leaf extract could inhibit the elevation of F2-isoprostane levels in male Wistar rats (Rattus norvegicus) urin induced by excessive physical training. This was a true experimental study using 16 male Wistar rats (Rattus norvegicus), aged 2-3 months, weighing 180-200 g as subjects. The control group (P0) was treated with a placebo and excessive physical training, and the treatment group (P1) was treated with the willow leaf extract of 200mg/rat/day and excessive physical training. Before and after 14 days of treatment, the urine samples were collected and their levels of F2-isoprostane 8-isoPGF2α were examined by using enzyme immunoassay kit (EIA). The results showed that the mean level of F2-isoprostane in the control group (P0) before treatment (pretest) was 5.20±0.483 ng / mL while in the treatment group (P1) was 5.46±0.655 ng / mL (P > 0.05). On the other hand, after treatment for 7 days (post-test), the mean level of F2-isoprostane in the control group (P0) was 5.34±0.476 ng/mL and in the treatment group (P1) was 3.61±0.389 ng/mL (P < 0.01). Conclusion: The extract of willow (Justicia gendarussa Burm. f.) leaf could inhibit the elevation of F2-isoprostane levels in male Wistar rats (Rattus norvegicus) urin induced by excessive physical training.
Keywords: willow leaf, F2-isoprostane, excessive physical training

Abstrak: Aktivitas fisik berlebih akan meningkatkan komsumsi oksigen yang dapat mengakibatkan peningkatan kadar reactive oxygen species (ROS) sehingga menyebabkan stres oksidatif yang ditandai dengan meningkatnya F2-isoprostan sebagai salah satu produk peroksidasi lipid. Tanaman gandarusa (Justicia gendarussa Burm. f.) mengandung antioksidan yang dapat mencegah reaksi peroksidasi lipid. Penelitian ini bertujuan untuk membuktikan bahwa pemberian ekstrak daun gandarusa dapat menurunkan kadar F2-isoprostan urin tikus Wistar (Rattus norvegicus) jantan yang diinduksi latihan fisik berlebih. Jenis penelitian ialah eksperimental dengan subjek 16 ekor tikus (Rattus norvegicus), galur Wistar, sehat, berumur 6 bulan, berat badan 180-200 gr, dengan kadar F2-isoprostan >2ng/mL. Kelompok kontrol (P0) diberikan pelatihan fisik berlebih dan plasebo aquadest 2ml sedangkan kelompok perlakuan (P1) diberikan pelatihan fisik berlebih dan ekstrak daun gandarusa dosis 200mg/ekor/hari. Sebelum dan setelah 14 hari perlakuan, sampel urin ditampung dan diperiksa kadar F2-isoprostan menggunakan 8-isoPGF2α enzyme immunoassay kit (EIA) dari assay design untuk data pretest dan post-test. Hasil penelitian menunjukkan rerata kadar F2-isoprostan pada kelompok P0 sebelum perlakuan (pretest) ialah 5,20±0,483 ng/mL, sedangkan pada kelompokP1 ialah 5,46±0,655 ng/mL (P > 0,05). Setelah perlakuan selama 14 hari (post-test), rerata kadar F2-isoprostan pada kelompok P0 ialah 5,34±0,476 ng/mL dan pada kelompok P1 ialah 3,61±0,389 ng/mL (P < 0,01). Simpulan: Ekstrak daun gandarusa (Justicia gendarussa burm. f.) dapat menurunkan kadar F2-isoprostan urin tikus Wistar (Rattus norvegicus) jantan yang diinduksi latihan fisik berlebih.
Kata kunci: daun gandarusa, F2-isoprostan, pelatihan fisik berlebih