The Comparative Effect of Fasting with and without Caloric Restriction in Rat on Oxidative Stress Parameters

Document Type: Research Paper

Authors

1 Medical Faculty of Islamic University Sultan Agung Semarang

2 Biochemistry Department Medicine Faculty of Sultan Agung Islamic University Semarang Jl. Raya Kaligawe Km. 4 PO.Box 1054, Semarang, Central Java- Indonesia, 50112

3 Human’s Health and Aging Science Biomedic Master Degree Medicine Faculty of Sultan Agung Islamic University Semarang Jl. Raya Kaligawe Km. 4 PO.Box 1054, Semarang, Central Java- Indonesia, 50112

Abstract

Introduction: Fasting, like Islamic Ramadan Fasting, has been associated with health benefits. Islamic Ramadan fasting, a form of caloric restriction (CR) or alternate day fasting that. Studies suggest a comparable effect of ADF and caloric restriction. Despite the fact that fasting can be considered as a form of dietary restriction, fasters tend to have difficulty to reduce their food intake during non-fasting period by overeating leading to the excessive calorie intake. To compare the effect of fasting with and without caloric restriction in Sprague Dawley rats. Methods: The rats were assigned to one of three groups: ADF with 70 % calorie intake (30% CR), ADF with 100 % calorie intake (0% CR), and ADF with 140 % calorie intake (excessive calorie intake) and AL (fed ad libitum). All groups were subjected to 6 hour fasting per day (9 a.m. until 3 p.m.) or 15 days. The plasma sample was taken for MDA level assessment. Urinary 8-oxodG levels were determined by using ELISA. Results: ADF with 30% calorie restriction (F70) group had the lowest MDA level. Measurement of 8-oxodG level showed that group F70 had the highest production of 8-oxodG. There was an inverse relationship between MDA level and 8-oxodG level meaning the lower MDA level, the lower 8-oxodG levels were produced. Conclusion: ADF fasting with 30% caloric restriction reduce the MDA level but increase 8-oxodG levels. This study suggest the beneficial effect of fasting requires decrease in overall caloric intake.

Keywords


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