Ari Estuningtyas, Ari
Universitas Indonesia

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Toksisitas Ekstrak Etanol Mangifera foetida L. Sebagai Pengkelat Besi Ditinjau dari LD50 dan Komponen Sel Darah Wahyuni, Tri; Sari, Santi Purna; Estuningtyas, Ari; Freisleben, HJ
Pharmaceutical Sciences and Research (PSR) Vol 2, No 3 (2015)
Publisher : Directorate of Research and Community Engagement, Universitas Indonesia

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Abstract

Ethanolic extract of bacang mango leaves (Mangifera foetida L.) was reported could decrease blood iron concentration of iron overloaded-Sprague dawley rats. The aim of this experiment was to determine acute toxicity (LD50) value of ethanolic extract of M. foetida by weil method and its effect to blood component. This study was conducted by employing a complete random design using 25 male and 25 female mice of DDY strain which was divided into 5 groups. The first until fourth group were administered by the aquadest suspension of ethanolic extract of M. foetida with dose variation, orally. The fifth group was control group that administered by aquadest only. The LD50 was determined by the total of death on all group. LD50 value of the extract showed no death in the biggest doses (13.013 g/kg). The examination was continued with measured blood count (erythrocytes, trombocytes, leukocytes, and haemoglobin concentration). It was shown that the extract at dose 1.626; 3.253; 6.506 and 13.013 g/kg unchanged the blood count measurement. It is concluded that Mangifera foetida L. leaf was not toxic, but could not change the blood count measurement.  
The preventive effect of Mangifera foetida L. leaf extract administered simultaneously to excess iron on markers of iron overload in Spraque-Dawley rats Fajri, Purnama; Estuningtyas, Ari; Louisa, Melva; Freisleben, Hans-Joachim
Medical Journal of Indonesia Vol 26, No 4 (2017): December
Publisher : Faculty of Medicine Universitas Indonesia

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Background: Recently, there is no agent available for the prevention of iron overload (IO) in thalassemia patients. Previous studies showed that Mangifera foetida L. leaf extracts reduced the levels of iron in IO in vitro and in vivo models. The present study aimed to determine the efficacy of Mangifera foetida L. leaf extract in the prevention of IO induced in rats.Methods: Thirty male Sprague-Dawley rats were divided into 5 groups: control (untreated), IO, 3 treatment groups with leaf extract equivalent to 50, 100, and 200 mg of mangiferin per kg BW. Fe-dextran (15 mg) was administered intraperitoneally twice a week for 4 weeks to all groups except control (IO, DSM50, DSM100, and DSM200). Urine and blood samples were taken before and after treatments. After 4 weeks of treatment, rats were terminated, and samples of spleen, liver, and heart were taken. Ferritin and mangiferin levels and SOD activities were determined in plasma. Iron levels were measured in plasma, urine, and spleen.Results: Experimental IO increased plasma Fe content 4.23 times and plasma ferritin levels 6.9 times vs normal. Mangifera foetida L. leaf extract DSM50 resulted in the highest blood levels of 212 ng mangiferin per mL and moderately, although not significant, prevented increased plasma ferritin levels and IO in organs and protected against oxidative stress.Conclusion: Aqueous Mangifera foetida L. leaf extract may be useful to prevent IO and oxidative stress in thalassemia patients.
The effects of quercetin on oxidative stress and fibrosis markers in chronic kidney disease rat model Layal, Kamalia; Perdhana, Ika S.; Louisa, Melva; Estuningtyas, Ari; Soetikno, Vivian
Medical Journal of Indonesia Vol 26, No 3 (2017): September
Publisher : Faculty of Medicine Universitas Indonesia

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Abstract

Background: Oxidative stress may play a role in the pathogenesis of (CKD), Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor involved in cell defense mechanism against oxidative stress. In this study, we examined the effect of quercetin, a polyphenplic antioxidant anti fibrosis compund in fruits and vegetables, on the 5/6 nephrectomy-induced CKD progression model rats through modulation of Nrf2 expression.Methods: Male Sprague-Dawley rats were randomly divided into normal control group (C), untreated 5/6 nephrectomy (Nx), quercetin-treated 5/6 nephrectomy (100 mg/kgBW/day orally) (NxQ), and captopril-treated 5/6 nephrectomy (10 mg/kgBW/day orally) (NxK) for 8 weeks. At the end of study, all animals were sacrified. Urine, blood, and kidney tissues were taken for examination of proteinuria, plasma creatinine, urea, malondialdehyde (MDA), glutathione peroxidase (GPx) activity, Nrf2, Keap1, heme oxygenase-1 (HO-1) expressions, and renal fibrosis.Results: Quercetin administration did not affect the level of protein in urine, plasma creatinine, and urea. However, it tended to reduce the level of MDA, increase GPx activity, Nrf2, Keap1, and HO-1 expression as well as the degree of fibrosis.Conclusion: In 5/6 nephrectomized rats, quercetin tended to ameliorate the level of MDA, GPx activity, Nrf2, Keap1, and HO-1 expression. In addition, quercetin tended to decrease the degree of fibrosis in the remnant kidney.