EFFECT OF <i>Aloe vera</i> GEL ON SUPEROXIDE DISMUTASE (SOD) LEVEL IN STREPTOZOTOCIN (STZ)-INDUCED DIABETIC WISTAR <i>Rattus novergicus</i> LIVER

Abstract

Diabetes mellitus is a metabolic disorder characterized by the increasing levels of blood glucose as a result of either impaired of insulin secretion, insulin action, or both. Persistent hyperglycemia causes oxidative stress. Aloe vera is known of having an antioxidant activity. One of intrinsic antioxidant enzyme is superoxide dismutase (SOD) which eliminates superoxide radical. This research aims to determine the effect of Aloe vera gel on SOD level in STZ-induced diabetic Wistar rat liver. Wistar strain of Rattus novergicus used in this research were grouped into eight groups, consist of negative control (K-), non diabetic groups (NDM) consist of NDM 1 (dose of 30 mg/day), NDM 2 (dose of 60 mg/day), NDM 3 (dose of 120 mg/day), positive control (DM), and the DM group consists of DM 1 (dose of 30 mg/day), DM 2 (dose of 60 mg/day), and DM 3 (dose of 120 mg/day), with three replications each. Diabetic rats were induced using an intra-peritoneal injection of 60 mg/kg BW STZ. Three milliliters of Aloe vera gel were given intragastrointestinally for 14 days started from three days after injection of STZ. The level of liver SOD was measured with spectrophotometer.The results of One-Way Anova showed that Aloe vera gel has a significant effect on SOD levels (p< 0.05). Further analysis using LSD showed that only the treatment of NDM with 60 mg/day of Aloe vera gel giving a significant decreasing of SOD level compared to (K-). The conclusion is that Aloe vera has potency as a natural antioxidant.

Keywords: Aloe vera, diabetes mellitus, superoxide dismutase (SOD), liver, streptozotocin (STZ) 

References
Akinola, O.B., O.O. Dosumu, O.S. Akinola, L. Zatta, L. Dini, E.A.C. Martins. 2010. Azadirachta indica Leaf Extract Ameliorates Hyperglicemia and Hepatic Glycogenosis in Streptozotocin-induced Diabetic Wistar Rats. International Journal of Phytomedicine 2, 320-331.
Ammar, N.M., A.N.B. Singab, S.H. El Ahmady, A.A. El Ansarry, E.G. Haggag, and R.S. Shabban. 2010. Phytochemical and Biological Studies of Some Polysaccharides Isolated From Aloe, Tamarindus, Opuntia, and Citrus. JASMR, 5(2): 141-152.
Anilakumar, K. R., K.R. Sudarshanakrishna, G. Chandramohan, N. Ilaiyaraja, F. Khanum, and A.S. Bawa. 2010. Effect of Aloe vera Gel Extract on Antioxidant Enzymes and Azoxymethane-induced Oxidative Stress in Rats. Indian Journal of Experimental Biology, 48: 837-842.
Dominguez, C., E. Ruiz, M. Gussinye, and A. Carracosa. 1998. Oxidative Stress at Onset and in early Stages of Type 1 Diabetes in Children and Adolescents. Diabetes care, 21: 1736-1742.
Dröge, W. 2002. Free Radicals in the Physiological Control of Cell Function. The American Physiological Society. 82: 47-95.
Erejuwa, O.O., S.A. Sulaiman, M.S.A. Wahab, S.K.N. Salam, M.S.M. Salleh and S. Gurtu. 2011. Effect of Glibenclamide alone versus Glibenclamide and Honey on Oxidative Stress in Pancreas of Streptozotocin- Induced Diabetic Rats. International Journal of Applied Research in Natural Products, 4 (2): 1-10.
Fatchiyah. 2011. Glucomannan, Terapi Herbal Pengendalian Gula Darah pada Diabetes,http://fatchiyah.lecture.ub.ac.id/2011/06/glucomannan-terapi-herbal-pengendalian-gula-darah-pada-diabetes, accessed 2 June 2012).
Forbes, J.M., M.T. Coughlan, and M.E. Cooper. 2008. Oxidative Stress as a Major Culprit in Kidney Disease in Diabetes. DIABETES, 57: 1446-1454.
Gokhale, M.S., H.S. Deepak, H.D. Zeenat, Santani, and K.G. Ramesh. 1998. Effect of Chronic Treatment with Amlodipine in Non-Insulin-Dependent Diabetic Rats. Pharmacological Research, 37: 6455-6459.
Haddad, K.M., A.R. Rezaizade, M. Mardani, Asadi, G.R. Karam, and M. Mahmoodi. 2005. Relationships between ascorbic acid, hydroxyproline and collagen, of wound healing in diabetic rats. FEBS Journal, 272.
Hamman, J. H. 2008. Composition and Applications of Aloe vera Leaf Gel. Molecules, 13: 1599-1616.
Handaya, Y. 2011. Peran Aloe Gel Pada VEGF dan eNOS Sebagai Aktivator Penyembuhan Luka Melalui Rasio EPC/CEC Pada Penderita Diabetes Mellitus. Malang: Dissertation.
Hu, Y., J. Xu, Q. Hu. 2003. Evaluation of Antioxidant Potential of Aloe vera (Aloe barbadensis Miller) Extracts. Journal of Agricultural and Food Chemistry, 51: 7788-7791.
Jain, P., P. Chouhan, and R.N. Shukla. 2011. Chemical Composition of Anticancerous Component (Acemannan and Emodin) from Aloe vera and Dehydration Effect of Aloe at Different Temperature. An International Journal of Chemistry, 2(3): 147-157.
Johansen, J. S., A.K. Harris, D.J. Rychly, and A. Ergul. 2005. Oxidative Stress and The Use of Antioxidant in Diabetes: Linking Basic Science to Clinical Practice. Cardiovascular Diabetology, 4 (5): 1-11.
Kaneez, F. S. 2003. A Light Microscopic Study of Pathological Changes in Kidney, Heart and Liver of Chronic Diabetic Rats. Annals of Hepatology, 5:113-118.
Kusmawati, A., and I.B. Pratiwi. 2009. Pengambilan Polisakarida Acemannan dari Aloe vera menggunakan Etanol sebagai Pengendap. Semarang: Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro.
Maritim, A.C., R.A. Sanders, and J.B. Watkins. 2003. Diabetes, Oxidative stress, and Antioxidants: A Review. J Biochem Molecular Toxicology, 17(1): 24-38.
Miladi, S. M., and M. Damak. 2008. In Vitro Antioxidant Activities of Aloe vera Leaf Skin Extract. Journal de La Societe Chimique de Tunisie, 10: 101-109.
Nobar, M., E. Rahbani, A. Pour, Rahimi, F.A. Beig, and S.M. Mirhashemi. 1999. Total Antioxidant Capacity, Superoxide Dismutase and Glutathion Peroxidase in Diabetic Patients. Medical Journal of Islamic Academy of Science, 12 (4): 109-114.
Noor, A., S. Gunasekaran, A.S. Manickam, and M.A. Vijayalakshmi. 2008. Antidiabetic activity of Aloe vera and Histology of Organs in Streptozotocin-Induced Diabetic Rats. Current Science, 94(8): 1070-1076.
Padmadisastra, Y., Sidik, and S. Ajizah. 2003. Formulasi Sediaan Cair Gel Lidah Buaya (Aloe vera Linn) Sebagai Minuman Kesehatan. Simposium Nasional Kimia Bahan Alam III.
Pi, J., Y. Bai, Q. Zhang, V. Wong, L.M. Floering, K. Daniel, J.M. Reece, J.T. Deeney, M.E. Andersen, B.E. Corkey, and S. Collins. 2007. Reactive Oxygen Species as a Signal in Glucose Stimulated Insulin Secretion. Diabetes, 56: 1783-1791.
Rajasekaran, S., K.Sivagnam, and S. Subramanian. 2005. Antioxidant Effect of Aloe vera gel extract in Streptozotocin-Induced Diabetes In Rats. Pharmacological Reports, 57: 90-96.
Rajasekaran, S., K. Ravi, K. Sivagnanam, and S. Subramanian. 2006. Beneficial Effects of Aloe vera Leaf Gel Extract on Lipid Profile Status in Rats with Streptozotocin Diabetes. Clinical and Experimental Pharmacology and Physiology, 33: 232-237.
Ramachandraiahgari, R.M.V., S.R. Somesula, P.J. Adi, I.S. Mannur, M. Enamala, and B. Matcha. 2012. Protective Role of Ethanolic Extract of Aloe vera Antioxidant Properties on Liver and Kidney of Streptozotocin-Induced Diabetic Rats. Digest Journal of Nanomaterials and Biostructures, 7(1): 175-184.
Saritha, V., K.R. Anilakumar, and F. Khanum. 2010. Antioxidant and Antibacterial Activity of Aloe vera Gel Extracts. International Jurnal of Pharmaceutical & Biological Archives, 1(4): 376-384.
Seino, Y., K. Nanjo, N. Tajima, T. Kadowaki, A. Kashiwagi, E. Araki, C. Ito, N. Inagaki, Y. Iwamoto, M. Kasuga, T. Hanafusa, M. Haneda, and K. Ueki. 2010. Report of The Committee On The Classification and Diagnostic Criteria of Diabetes Mellitus. Diabetol Int, 1: 2-20.
Szkudelski, T. 2001. The Mechanism od Alloxan and Streptozotocin in B Cell of The Rat Pancreas. Physiological Research, 50: 536-546.
Venkateswaran, S., and L. Pari. 2002. Antioxidant Effect of Phaseolus vulgaricus in Streptozotocin-induced Diabetic Rats. Asia Pacific J Clin Nutr, 11 (3): 206-209.
Wei, M., L. Ong, M.T. Smith, F.B. Ross, K.L. Schmid, A.J. Hoey, D.J. Burstow, and L.C. Brown. 2003. The Streptozotocin-Diabetic Rat as a Model of the Chronic Complications of Human Diabetes. Heart, Lung and Circulation, 12: 44-50.