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Abstrak :
Stroke memiliki insiden yang cenderung meningkat dari tahun ke tahun, dengan gejala sisa terutama berupa hemi/paraplegia. Obat konvensional yang dipakai untuk pengobatan stroke relatif mahal dan memiliki banyak efek samping. Ekstrak air akar dari tanaman akar kucing (Acalypha indica Linn.) dipercaya masyarakat dapat mengatasi gejala hemi/paraplegia. Akar kucing memiliki efek antiradang, diuretik, antibiotik, laksatif, hemostasis, antidiabetes, dan menurunkan asam urat. Sampai saat ini, belum ada uji mengenai efek ekstrak air akar dari tanaman akar kucing tersebut, baik in vitro, eks vivo, maupun in vivo (uji praklinik) sebagai neuroterapi. Oleh karena itu, akan dilakukan uji efek neuroterapi ekstrak akar air dari Acalypha indica Linn. secara eks vivo. Penelitian eksperimental ini menggunakan sampel otot gastroknemius katak Bufo melanostictus Schneider. Pertama-tama setiap sampel direndam dengan ringer selama 10 menit, dicatat kontraksinya, kemudian dibilas. Selanjutnya direndam dengan pankuronium bromida 2 mg selama 10 menit, dibilas, saraf dirangsang dan dicatat kontraksinya. Sampel kemudian direndam ekstrak air akar Acalypha indica Linn. dengan dosis 5 mg dan 10 mg selama 10 menit, saraf dirangsang dan dicatat kontraksinya. Parameter yang diukur dalam penelitian ini adalah aktivitas listrik otot katak seperti jumlah dan lama repolarisasi, depolarisasi, flat, dan amplitudo setelah distimulasi. Data yang diperoleh dianalisis secara statistik dengan uji Anova satu arah. Hasil penelitian menunjukkan adanya perbaikan pada lama depolarisasi pada kelompok dosis 5 mg dan 10 mg (p=0,941) dan lama repolarisasi pada kelompok dosis 10 mg (p=0,657), walaupun hasil ini secara statistik tidak signifikan. ......Stroke incidence is likely to increase over time, with hemi/paraplegia as the common symptoms after stroke. Conventional drugs use for treatment of stroke is relatively expensive and have many side effects. People believed that extract water from the root of Acalypha indica Linn. can overcome the symptoms of hemi/paraplegia. Acalypha indica Linn. have the effect anti-inflammation, diuretics, antibiotics, laxative, hemostatis, anti-diabetic, and anti-urosemic. Until now, there has been no test of the effect of water extract from the roots of Acalypha indica Linn. both in vitro, ex vivo or in vivo (preclinical trial) as neurotherapy. Therefore, a test will be conducted to test the neuro-therapy effect of water extract from the roots of Acalypha indica Linn. ex vivo. M. gastrocnemius of frog Bufo melanostictus Schneider used in this experimental study as a sample. First each sample soaked with the ringer for 10 minutes, and the contraction is recorded, then rinsed. Second sample soaked with pancuronium bromide 2 mg for 10 minutes, rinsed, nerve stimulated, contraction recorded then rinsed. Then sample soaked with extract with dose of 5 mg and 10 mg for 10 minutes, nerve stimulated and contraction recorded. Parameters measured in this study were electrical activities of frog muscle, such as amount and duration of repolarization, depolarization, flat (resting potential), and amplitude after stimulation. Data are analyzed statistically with the one way Anova test. Results of this study indicate the improvement in the long depolarization in the 5 mg and 10 mg dose group (p=0.941) and long repolarization in the 10 mg dose group (p=0,657), although these result is not statistically significant.

Abstrak :
The studies of neuro-protection and neuro-therapy effects of Acalypha indica Linn. water extract ex vivo on Musculus gastrocnemius frog have already done at three Departments in Faculty of Medicine, University of Indonesia. The experimental studies were done on 2 groups of frog for neuro-protection and neuro-therapy effects. Each group of frog was divided into 7 subgroups of application, 4 samples each. There were 5 subgroups of doses: 5; 10; 15; 20; 25 mg and 2 subgroups as control. Pancuronium bromide 0.2%, 4 mg, was used for a positive control as muscle relaxant. Neuroprotection study was done as follow: ringer - extract - pancuronium bromide, and neuro-therapy study was ringer - pancuronium bromide - extract, respectively. The parameters measured in these studies were the electrical activities such as amount and duration (second) of re-polarization; depolarization, resting potential, and the height of spike after electrical stimulation at 5 mV. Neuro-protection effect of extract was determined by the ability of muscle to show the electrical response after incubating with pancuronium bromide for 10 minutes, and after incubating with extract for 10 minutes for neuro-therapy effect. In the dose of 15 mg and 20 mg/mL of A. indica Linn. extract showed better activities than the dose of 25 mg of extract, both as neuro-protection and neuro-therapy effects, but statistically its have not a significant difference. This study should be followed by an in vivo experiment on frog and it would be done in pharmacokinetic and pharmacodynamic studies on other animal models.

Abstrak :
Stroke menimbulkan gangguan neurologis menetap. Obat-obatan konvensional yang ada selain relatif mahal dan banyak efek samping, belum dapat menyembuhkan gejala sisa tersebut. Melihat penggunaan rebusan akar Acalypha indica Linn. di masyarakat dalam mengatasi gejala paresis pasca stroke, dilakukan uji efek neuroterapi ekstrak akar Acalypha indica Linn. secara eks vivo pada saraf otot gastroknemius katak, untuk membuktikan adanya efek terapi dari ekstrak. Studi eksperimental ini dilakukan dengan model neuromuscular junction katak. Dikarenakan kemiripan studi dengan patofisiologi miastenia gravis, bila penelitian ini menunjukkan hasil yang baik, kemungkinan dapat diterapkan pula untuk mengobati miastenia gravis. Penelitian dilakukan dengan lima kelompok dosis (ekstrak 5; 10; 15; 20; 25 mg/ml) dan satu kelompok kontrol (ringer), dengan empat sampel setiap kelompok. Pada pembahasan hanya akan dibandingkan antara kelompok kontrol, ekstrak 20 mg, dan 25 mg. Pankuronium bromida 2 mg digunakan sebagai pelumpuh otot. Penelitian dilakukan sebagai berikut: perendaman dengan Ringer – Pankuronium bromida – Ekstrak. Parameter yang digunakan berupa aktivitas listrik seperti jumlah dan durasi (dalam detik) dari repolarisasi, depolarisasi, potensial istirahat, dan tinggi spike setelah pemberian stimulasi listrik pada 5 mV. Adanya efek neuroterapi ditentukan oleh kemampuan otot untuk menunjukkan respons listrik setelah perendaman dengan pankuronium bromida dan ekstrak selama 10 menit. Ekstrak air akar Acalypha indica Linn. menunjukkan efek neuroterapi terbaik pada dosis 20 mg dan 25 mg, dengan perbaikan nilai rata-rata depolarisasi (p= 0,197), repolarisasi (p= 0,475), dan flat (p= 0,558), walaupun secara statistik tidak berbeda bermakna. ......Stroke has caused persistent neurologic symptoms. The conventional drugs used today cannot cure these symptoms, besides they are more adverse reactions and expensive. The extract of Acalypha indica Linn. has been used for long time to treat patient with paralyze. To prove the extract’s therapy effect, a study of neuro-therapy effects of Acalypha indica Linn. extract ex vivo on m.gastrocnemius of frog has been done. The experimental study was done on neuromuscular junction of frog. Because of the similarity with pathophysiology of myasthenia gravis, if the extract has been proved to have therapy effect, this can also be used to treat myasthenia gravis. The study was done on five groups of doses: 5; 10; 15; 20; 25 mg and one group as control (ringer), with four samples each group. On the results discussion, only control group, the extract of 20 mg and 25 mg were compared. Pancuronium bromide 2 mg, is used for muscle relaxant. The study was done as follow: Ringer – Pancuronium bromide – Extract. The parameters used to measure in this study were the electrical activities such as amount and duration (second) of repolarization, depolarization, resting potential, and the height of spike after electrical stimulation at 5 mV. The neuro-therapy effect of extract was determined by the ability of muscle to show the electrical response after incubating with pancuronium bromide and extract within 10 minutes. The extract of Acalypha indica Linn. showed best effects on doses of 20 mg and 25 mg, with improved depolarization (p= 0,197), repolarization (p= 0,475), and flat (p= 0,558), but statistically there were no significant difference.