Sarmoko Sarmoko
Cancer Chemoprevention Research Center, Faculty of Pharmacy. Universitas Gadjah Mada, Yogyakarta Sekip Utara 55281, Indonesia

Published : 4 Documents
Articles

Found 4 Documents
Search

Combination of three species of Zingiberaceae prevents doxorubicin-induced hepatotoxicity Ekowati, Heny; Sarmoko, Sarmoko; Widiastuti, Retno
Universa Medicina Vol 32, No 1 (2013)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2013.v32.11 - 19

Abstract

BACKGROUND Doxorubicin as an anticancer drug has hepatotoxic side effects. Curcuma xanthorrhiza, Curcuma longa and Zingiber officinale are commonly used as herbals in Indonesia and around the world. Several compounds in these plants have antioxidant activities and are known to exhibit protection against doxorubicin-induced toxicities. This study aimed to observe the hepatoprotective effect of a combination of C. xanthorriza, C. longa, and Z. officinale extract on doxorubicin-induced hepatotoxicity in rats. METHODS A total of 28 Wistar male rats were divided into four groups: 1) control group (0.9% NaCl); 2) doxorubicin 5 mg/kg intraperitoneally (ip) four times in 14 days (days 1, 5, 9, 13); 3) doxorubicin + combination of C. xanthorriza, C. longa, and Z. officinale (temulawak, kunyit, and jahe merah, designated as Tekuja) 250 mg/kg/day orally for 14 days; and 4) doxorubicin + Tekuja extract 500 mg/kg/day orally for 14 days. Measurements of parameters based on liver histopathology and the parameters of serum alanine amino transferase (ALT) and aspartate amino tranferase (AST). RESULTS Doxorubicin caused significant elevation in serum ALT and AST enzymes after 14 days of treatment. Rats treated with doxorubicin + Tekuja extract 250 mg/kg/ day showed no histological changes, but had decreased levels of ALT and AST. CONCLUSION This study indicates that the combination of C. xanthorriza, C. longa, and Z. officinale has a protective effect in rats against liver damage induced by doxorubicin
Combination of Leunca Herb Ethanolic Extract and Doxorubicin Suppresses HeLa Cells’ Growth Sarmoko, Sarmoko; Putri, Dyaningtyas Dewi Pamungkas; Puspitasari, Endah; Anindyajati, Anindyajati; Meiyanto, Edy
Indonesian Journal of Cancer Chemoprevention Vol 2, No 3 (2011)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev2iss3pp281-285

Abstract

Leunca (Solanum nigrum L.)ethanolic extractshowedcytotoxic activity on several cancer cell lines (HepG2, HT-29) and showed anti-proliferative activityon MCF-7 cells. Its application as a combinationagent in chemotherapy will increase the effectivity and reduce the toxicity of chemotherapy. We predict that application of combinatorial chemotherapy in cancer treatment will be more effective and less toxic compared to single treatment. Our research aims to investigate the cytotoxic activitiy of leunca herbs ethanolic extract alone and in combination with doxorubicin on HeLa cell line. MTT assay was conducted to measure the growth inhibitory effect of leunca herbs ethanolic extract and combinatorial treatments. Leunca herb ethanolic extract (5, 50, 250 μg/ml) increased the cytotoxic effect of  doxorubicin compared to doxorubicin alone. The strongest cytotoxic activity resulted from the combination of 250 μg/ml leunca herbs ethanolic extract and 250 nM doxorubicin. Based on our results, leunca herbs ethanolic extract is a potential chemopreventive agent, while its molecular mechanism needs to be explored.Keywords : Leunca herbs ethanolic extract, doxorubicin, HeLa, MTT assay
MCF-7 Resistant Doxorubicin are Characterized by Lamelapodia, Strong Adhesion on Substrate and P-gp Overexpression Putri, Dyaningtyas Dewi Pamungkas; Sarmoko, Sarmoko; Febriansah, Rifki; Puspitasari, Endah; Ismiyati, Nur; Fitriasari, Aditya
Indonesian Journal of Cancer Chemoprevention Vol 2, No 3 (2011)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev2iss3pp304-309

Abstract

The prognosis of breast cancer patients is closely associated with the response of tumor cells to chemotherapy agent. Doxorubicin is one of the primary chemotherapeutic agents used for the treatment of breast cancer. Resistance to chemotherapy is believed to cause treatment failure in cancer patients. Furthermore, long time exposure to chemotherapeutic agent induces cancer cells resistance. MCF-7 sensitive cells used as chemoresistance model have overexpression P-gp (P-glycoprotein). Chemoresistance was established by treating MCF-7 cells with 0.5 µg/ml doxorubicin-contained medium for a week. 50% inhibiting concentration (IC50) doxorubicin on MCF-7 cells/DOX were determined using MTT assay. Western blot assay and immunocytochemistry assay was performed to determine the expression of P-gp. Morphological of MCF-7 cell/DOX was changing to become larger and have lamellapodia. IC50 value of doxorubicin was 700 nM on MCF-7/DOX and 400 nM on sensitive MCF-7 cells. The MCF-7/DOX sensitivity to doxorubicin was decreased, shown by 1.5 fold higher IC50 of doxorubicin on MCF-7/DOX compared to MCF-7 sensitive cells. Treatment doxorubicin to sensitive MCF-7 cells leads to the increasing P-gp expression. The P-gp level expression has strong correlation with the low sensitivity of MCF-7/DOX to doxorubicin.Keywords: doxorubicin, resistance cells, sensitive MCF-7 cell
Combination of Solanum nigrum L. Herb Ethanolic Extract and Doxorubicin Performs Synergism on T47D Breast Cancer Cells Anindyajati, Anindyajati; Sarmoko, Sarmoko; Putri, Dyaningtyas Dewi Pamungkas; Hermawan, Adam; Meiyanto, Edy
Indonesian Journal of Cancer Chemoprevention Vol 1, No 2 (2010)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev1iss2pp78-84

Abstract

Leunca (Solanum nigrum L.) has been proven to possess anticancer activity on some type of cancer cells. In vitro study of solamargine found in the herb showed cytotoxic effect against several breast cancer cell lines, such as T47D and MDA-MB-31. Hence, further study on its potential as a co-chemotherapeutic agent needs to be conducted, in order to overcome resistance problem commonly found in cancer chemotherapy. This study aimed to examine the cytotoxic activity of leunca herb ethanolic extract (LEE) alone and its combination with doxorubicin. Single and combinational treatment of LEE and doxorubicin on T47D breast cancer cells were done, and their viability representing cytotoxicity were analyzed by using MTT assay to determine the IC50 value and combination index (CI) to evaluate the combinational effect. Twenty four hours-treatment of LEE alone gave cytotoxicity activity showing a dose-dependent manner with the IC50 of 47 µg/ml, while combinational treatment showed that 4 µg/ml LEE was found to be synergist with 4 nM doxorubicin on T47D cells, with the optimum CI value of 0.59. This result shows that Solanum nigrum L. is potential to be proposed as doxorubicin co-chemotherapeutic agent against breast cancer. Further study on its molecular mechanism needs to be conducted.Key words: Solanum nigrum, doxorubicin, synergist, breast cancer