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"Hipoksia pada ketinggian diketahui menyebabkan stress oksidatif. Dilakukan penelitian mengenai aktivitas spesifik katalase pada jaringan hati tikus dengan metode spektrofotometri untuk mengukur pemecahan hidrogen peroksida. Tikus dipajankan pada hipoksia hipobarik akut berulang dengan simulasi ketinggian 35,000 kaki yang diturunkan bertahap ke ketinggian 25,000 kaki, 20,000 kaki, lalu 18,000 kaki. Hewan uji dibagi ke dalam 4 kelompok: 1) diberi 1 kali perlakuan, 2) diberi 2 kali perlakuan, 3) diberi 3 kali perlakuan, 4)diberi 4 kali perlakuan, dengan setiap prosedur diselingi periode normoksia selama 7 hari. Hipoksia menyebabkan penurunan aktivitas spesifik katalase pada semua kelompok uji. Penurunan bermakna didapatkan pada kelompok 2 (p = 0.008), 3 (p = 0.008), dan 4 (p = 0.008). Hasil pada kelompok 1 tidak menunjukkan perbedaan bermakna dibandingkan kontrol (p = 0.548). Hipoksia hipobarik menginduksi penurunan aktivitas spesifik katalase hati.

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Hypoxia at high altitude is known as a cause of oxidative stress. Specific activity of catalase in rat liver submitted to recurrent acute hypobaric hypoxia were studied by means of measuring the breakdown of hydrogen peroxide spectrophotometrically. Animals were submitted to simulated altitudes of 35,000 ft lowered gradually to 25,000 ft, 20,000, and 18,000 ft. The experimental groups were as follows: 1) rats exposed to one procedure, 2) exposed to two procedures, repeatedly, 3) exposed to three-times of procedures, and 4) exposed to four-times of procedures, each procedure was interrupted with 7 days period of normoxia. Hypoxia produced a decrease in specific activity of liver catalase in all experimental groups. Significant decreases were showed in group 2 (p = 0.008), 3 (p = 0.008), and 4 (p = 0.008). Group 1 showed no significant difference compared to control group (p = 0.548). Hypobaric hypoxia induces a decrease in the specific activity of catalase in rat liver."

"Latar belakang: Herb-Induced Liver Injury (HILI) merupakan kondisi kerusakan hati yang disebabkan oleh obat-obatan herbal dengan prevalensi 3 kejadian per 100.000 individu. Saat ini, penggunaan produk herbal sebagai obat alternatif telah meningkat 80% sejak tiga dekade terakhir. Lunasin termasuk salah satu produk herbal yang sedang marak digunakan karena efek antikanker dan antiinflamasinya. Namun, dosis aman dari lunasin sendiri belum diketahui sehingga perlu dilakukan uji toksisitas untuk menghindari HILI akibat lunasin.Metode: Penelitian ini menggunakan desain true experimental in vivo dengan bahan biologis tersimpan jaringan hati tikus Sprague-Dawley sebanyak 40 ekor yang sebelumnya diberi perlakuan: kelompok tanpa perlakuan (N); kelompok dosis ET-Lun 250 mg/kgBB (K250); kelompok dosis ET-Lun 500 mg/kgBB (K500); kelompok dosis ET-Lun 750 mg/kgBB (K750) yang kemudian diukur luas Kiernan Triad-nya menggunakan software Indomicroview.Hasil: Rerata luas Kiernan Triad mengalami peningkatan dan penurunan pada tiap kelompok. Pada struktur arteri,vena, dan duktus, secara berurutan hasil rerata luas pada kelompok perlakuan normal adalah (2 ± 0,33) μm2, (2 ± 0,30) μm2 , (2 ± 0,33) μm2. Kelompok perlakuan ET-Lun dengan dosis 250 mg/kgBB (1,99 ± 0,32) μm2, (3,19 ± 0,44) μm2, (2,04 ± 0,27) μm2. Kelompok dosis 500 mg/kgBB (2,14 ± 0,24) μm2, (3,4 ± 0,32) μm2, (2,31 ± 0,23) μm2 . Kelompok dosis 750 mg/kgBB (1,99 ± 0,21) μm2, (3,45 ± 0,25) μm2, (2,3 ± 0,34) μm2. Namun, perbedaan rerata tersebut dinyatakan tidak memiliki perbedaan yang signifikan menurut uji one-way ANOVA (p > 0,05). Hasil uji korelasi menunjukkan nilai yang signifikan antara kelompok vena dan duktus (p < 0,05). Kekuatan korelasi antara kedua kelompok tersebut tergolong kuat dengan arah korelasi positif. Kesimpulan: Pemberian ET-Lun dengan dosis 250 mg/kgBB, 500 mg/kgBB, dan 750mg/kgBB tidak menunjukkan gambaran hepatotoksisitas terhadap jaringan hati tikus, khususnya pada luas Kiernan Triadnya.

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Introduction: Herb-Induced Liver Injury (HILI) is a condition of liver damage caused by herbal medicines with a prevalence of 3 events per 100,000 individuals. Currently, the use of herbal products as alternative medicine has increased 80% since the last three decades. Lunasin is one of the herbal products that is currently being used because of its anticancer and anti-inflammatory effects. However, the safe dose of lunasin itself is unknown, so it is necessary to do a toxicity test to avoid HILI due to lunasin.

Method: This study used a true experimental in vivo design with biological material stored in the liver tissue of 40 Sprague-Dawley rats that were previously treated: with no intervention (N); ET-Lun dose group 250 mg/kgBW (K250); ET-Lun dose group 500 mg/kgBW (K500); The dose group of ET-Lun was 750 mg/kgBW (K750) which was then measured for the Kiernan Triad area using Indomicroview software.

Result: The average Kiernan Triad area increased and decreased in each group. In arteries, veins, and ducts, respectively, the mean area of the normal structure treatment group was (2 ± 0,33) μm2, (2 ± 0,30) μm2 , (2 ± 0,33) μm2. ET-Lun treatment group with a dose of 250 mg/kgBW was (1,99 ± 0,32) μm2, (3,19 ± 0,44) μm2, (2,04 ± 0,27) μm2. The 500 mg/kgBW dose group was (2,14 ± 0,24) μm2, (3,4 ± 0,32) μm2, (2,31 ± 0,23) μm2. The 750 mg/kgBW dose group was (1,99 ± 0,21) μm2, (3,45 ± 0,25) μm2, (2,3 ± 0,34) μm2. However, the mean difference was stated to have no significant difference according to the one-way ANOVA test (p > 0.05). ). The results of the correlation test showed a significant value between the venous and ductal groups (p < 0.05). The strength of the correlation between the two groups was strong with a positive correlation direction Conclusion: Administration of ET-Lun at a dose of 250 mg/kgBW, 500 mg/kgBW, and 750mg/kgBW did not show hepatotoxicity in rat liver tissue, especially in the Kiernan Triad area."

"Latar belakang: Dalam dua dekade terakhir, insidensi terjadinya Herb-Induced Liver Injury (HILI) terus meningkat di seluruh dunia karena terdapat banyak produk herbal yang belum melalui uji keamanan yang baik. Saat ini, salah satu produk herbal yang banyak dikonsumsi adalah lunasin. Namun, belum banyak uji toksisitas yang dilakukan terhadap senyawa tersebut. Penelitian ini bertujuan untuk melihat pengaruh pemberian lunasin terhadap luas vena sentralis hati sebagai salah satu indikator toksisitas hati. Metode: 42 ekor tikus Sprague-Dawley (SD) dibagi ke dalam empat kelompok perlakuan: kelompok normal, lunasin dosis 250 mg/kgBB, 500 mg/kgBB, dan 750 mg/kgBB. Setelah diberi perlakuan selama 90 hari, jaringan hati hewan uji diambil dan dijadikan preparat histopatologi. Pengukuran luas vena sentralis hati dilakukan menggunakan perangkat lunak Indomicro View.Hasil: Luas vena sentralis hati pada kelompok lunasin dosis 250 mg/kgBB (3,82±1,8 x 103 μm2), 500 mg/kgBB (3,35±1,34 x 103 μm2), dan 750 mg/kgBB (2,12±0,93 x 103 μm2) tidak memiliki perbedaan yang signifikan terhadap kelompok normal (2,52±0,66 x 103 μm2) (p > 0,05). Perbedaan signifikan hanya ditemukan antara kelompok dosis 250 dan 750 mg/kgBB (p = 0,02).Kesimpulan: Lunasin dalam dosis 250 mg/kgBB, 500 mg/kgBB, dan 750 mg/kgBB tidak menyebabkan perubahan luas vena sentralis yang signifikan terhadap kelompok normal.

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Introduction: In the last two decades, the incidence of Herb-Induced Liver Injury (HILI) continues to increase worldwide because many herbal products have not been tested thoroughly for their safety. Currently, a herbal product called lunasin is widely consumed. However, not many toxicity tests have been carried out on them. This study aimed to examine the effect of lunasin administration on the hepatic central vein area as one of the indicators of hepatotoxicity.

Method: 42 Sprague-Dawley (SD) rats were divided into four treatment groups: normal group, lunasin dose of 250 mg/kgBW, 500 mg/kgBW and 750 mg/kgBW. After 90 days of treatment, the rats’ liver tissues were made into histopathological preparations. Measurement of the hepatic central vein area was performed using the Indomicro View software.

Result: The hepatic central vein area in the lunasin group at a dose of 250 mg/kgBW (3.82±1.8 x 103 μm2), 500 mg/kgBW (3.35±1.34 x 103 μm2), and 750 mg/kgBW (2.12±0.93 x 103 μm2) did not have a significant difference to the normal group (2.52±0.66 x 103 μm2) (p > 0.05). A significant difference was only found between the 250 and 750 mg/kgBW dose groups (p = 0.02).

Conclusion: Lunasin in doses of 250 mg/kgBW, 500 mg/kgBW, and 750 mg/kgBW did not cause significant changes in the central venous area of the liver."