Articles

Found 3 Documents
Search
Journal : Universa Medicina

Typhonium flagelliforme decreases tyrosine kinase and Ki67 expression in mice

Universa Medicina Vol 32, No 3 (2013)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Original Source | Check in Google Scholar

Abstract

Background Worldwide, breast cancer is the most frequent cancer in women after lung cancer. Treatments include surgery, radiation, immunotherapy and chemotherapy, but are not effective. Tyrosine kinase and Ki67 protein are markers of proliferation. Typhonium flagelliforme ethanol extract (TFEE) has been shown to inhibit proliferation of Michigan Cancer Foundation-7 (MCF7) cells in culture. The aim of the present study was to examine the effect of administration of TFEE on tyrosine kinase and Ki67 expression in mice. Methods This experimental study using post test randomized design with control group was conducted in 24 tumor-bearing CH3 mice. They were randomly divided into 4 groups, consisting of one control and 3 treatment groups (TI, T2, T3) treated daily for 30 days with 0.2 ml TFEE at dosages of 200, 400, and 800 mg/kgBW, respectively. On day 31 the tumor tissues were collected and their tyrosine kinase and Ki67 expression were levels assessed using ELISA and immunohistochemical staining, respectively. Tyrosine kinase and Ki67 expression levels were analyzed, respectively using Kruskal Wallis test and one-way Anova followed by Bonferroni post hoc test. Results Mean tyrosine kinase level was highest in the control group, followed by T3, T2 and T1 (p=0.019). Mean level of Ki 67 expression was highest in the control group, followed by T2, T3 and T1 (p=0.000). Conclussions Oral administration of TFEE at a dose of 200 mg/kgBW decreases tyrosine kinase levels and Ki 67 expression.

Mangosteen peel extract reduces formalin-induced liver cell death in rats

Universa Medicina Vol 33, No 2 (2014)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Original Source | Check in Google Scholar

Abstract

BACKGROUNDFormalin is a xenobiotic that is now commonly used as a preservative in the food industry. The liver is an organ that has the highest metabolic capacity as compared to other organs. Mangosteen or Garcinia mangostana Linn (GML) peel contains xanthones, which are a source of natural antioxidants. The purpose of this study was to evaluate the effect of mangosteen peel extract on formalin- induced liver cell mortality rate and p53 protein expression in Wistar rats.METHODSEighteen rats received formalin orally for 2 weeks, and were subsequently divided into 3 groups, consisting of the formalin-control group receiving a placebo and treatment groups 1 and 2, which were treated with mangosteen peel extract at doses of 200 and 400 mg/kgBW/day, respectively. The treatment was carried out for 1 week, and finally the rats were terminated. The differences in liver cell mortality rate and p53 protein expression were analyzed.RESULTSOne-way ANOVA analysis showed significant differences in liver cell mortality rate among the three groups (p=0.004). The liver cell mortality rate in the treatment group receiving 400 mg/kgBW/day extract was lower than that in the formalin- control group. There was no p53 expression in all groups.CONCLUSIONSGarcinia mangostana Linn peel extract reduced the mortality rate of liver cells in rats receiving oral formalin. Involvement of p53 expression in liver cell mortality in rats exposed to oral formalin is presumably negligible.

Andrographis paniculata extract induced apoptosis of adenocarcinoma mammae in C3H mice

Universa Medicina Vol 32, No 2 (2013)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Original Source | Check in Google Scholar

Abstract

BACKGROUNDApoptosis plays an important role in tumorigenesis. Induction of apoptosis is a strategy for developing cancer therapy. In vitro study found that andrographolide isolated from Andrographis paniculata has anticancer activity by an apoptotic mechanism in cancer cell lines. The aim of the present study was to prove theeffect of Andrographis paniculata extract administered orally on apoptosis of mammary adenocarcinoma in C3H mice.METHODSThis study was of post test randomized control group design. Twenty four C3H mice with transplanted mammary adenocarcinomas were divided into four groups. To three groups Andrographis paniculata extract was administered orally for14 days, at doses of 5, 10 and 15 mg/day, respectively, whereas to the control group no Andrographis paniculata extract was administered. On day 15 the mice were terminated. The mammary adenocarcinomas were examined by the terminal deoxynucleotide transferase dUTP nick end labeling (TUNEL) method. The values of the apoptotic index were expressed as mean±SD and analyzed using ANOVA and Pearson’s correlation test.RESULTSThe mean apoptotic index values differed significantly among the experimental groups (p=0.001). The highest value was found in the group receiving Andrographis paniculata extract 15 mg/day, while the lowest was in the control group, the values being significantly correlated (r=0.974).CONCLUSIONSOral administration of Andrographis paniculata extract induced apoptosis in C3H mice with mammary adenocarcinoma