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All Journal Medical Journal of Indonesia World Nutrition Journal
Yulhasri Yulhasri
Department Of Biochemistry And Molecular Biology, Faculty Of Medicine, Universitas Indonesia, Jakarta
Medicine & Pharmacology Public Health

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Serum cell-free DNA concentration in BALB/c mice with azoxymethane-dextran sodium sulfate-induced colorectal cancer Novianry, Virhan; Yulhasri, Yulhasri; Kusmardi, Kusmardi
Medical Journal of Indonesia Vol 24, No 1 (2015): March
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.073 KB) | DOI: 10.13181/mji.v24i1.730

Abstract

Background: Colorectal cancer is the third most common cancer in the United States with a mortality rate ranked second in 2012. Early diagnosis such as detection of DNA in serum or faeces at the polyp stage, will reduce colorectal cancer mortality. This study was conducted to analyze the concentration of cell-free DNA (cfDNA) as a tumor marker in colorectal carcinogenesis by using blood serum samples from BALB/c mice previously induced by azoxymethane (AOM) and promoted by dextran sodium sulfate (DSS).Methods: This experimental animal study used 6 BALB/c mice which had serial intervention in a certain time frame. The first serum samples were taken before induction of carcinogenesis (week-0); then AOM induction of carcinogenesis followed and the second sampling one week after AOM intervention (week-1). Subsequently, promotion of carcinogenesis followed with DSS and the third sampling one week after this intervention (week-2). The fourth sampling was 5 weeks after AOM-DSS intervention (week-6). Quantification of the serum cfDNA was performed with SYBR-Green II fluorescence using Rotor Gene 6000 as a reference. Histopathological examination verified induction of carcinogenesis. For statistical analysis paired T-test was used.Results: Concentration of serum cfDNA showed significant difference between sampling group at week-0 (1238.49 ± 674.84 pg/µL) and sampling group at week-6 (2244.04 ± 726.57 pg/µL) the latter group showing pre-cancerous histopathology. Slightly increased cfDNA at week-1 with AOM induction (1358.57 ± 803.81 pg/µL) and week-2 after DSS promotion (1317.23 ± 735.92 pg/µL) were not significantly different from week-0 samples.Conclusion: The concentration of cfDNA in the serum of BALB/c mice 5 weeks after AOM induction of carcinogenesis and DSS promotion is significantly higher than before induction.
Serum Lactate Dehydrogenase Activity and Its Corellation with Carbohydrate Intake in Advanced Lung Cancer Patients claresta diella; Ninik Mudjihartini; Diana Sunardi; Dian Novita Chandra; Yulhasri Yulhasri; Achmad Mulawarman Jayusman
World Nutrition Journal Vol. 2 No. 2 (2019)
Publisher : Indonesian Nutrition Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25220/WNJ.V02.i2.0002

Abstract

Introduction : The aim of this study was to determine serum lactate dehydrogenase activity and its correlation with carbohydrate intake in advanced lung cancer patients at Dharmais National Cancer Hospital Jakarta. Cancer Cells are characterized by increase anaerobic glycolysis termed the Warburg effect with lactate as an end product, catalyzed by LDH enzyme. Activities of lactate in cancer influences on tumor growth initiation, survival, proliferation, angiogenesis and metastasis. Serum LDH activity can be used as a diagnostic, prognostic, and predictive marker for tumor sensitivity and resistancy to therapy.Methods :56 subjects of advanced lung cancer from Dharmais National Cancer Hospital Jakarta were included in this cross sectional study. Subjects were recruited by consecutive sampling. Food intake of total carbohydrate was obtained by utilizing 24 hours food recall method. The activity of  serum LDH (IU/L) was measured by using enzymatic spectrophotometry method on automated analyzer.Results :The mean of age subjects was 56,98 ± 10,36 years old and 55,4% were male. Carbohydrate intake based on 24 hours food recall was 57,64 ± 10,85%. The median of LDH activity was 541,5 (164–6539) IU/L, 60,7% was increase.Conclusion :This study showed medium negative significant correlation (p = 0,017, r = - 0,317) between total carbohydrate intake per day in grams with LDH serum activity. If carbohydrate source is reduced, the LDH enzyme will increase to keep the glycolysis process going. The results of this study indicate that an adequate carbohydrate needed in patients with cancer.
Co-Authors Achmad Mulawarman Jayusman claresta diella Dian Novita Chandra Diana Sunardi Kusmardi Kusmardi Ninik Mudjihartini Virhan Novianry