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Antihyperglycemic effect of a new thiazolidinedione analogue and its role in ameliorating oxidative stress in alloxan-induced diabetic rats.
Life Sci. 2007 Feb 27; 80(12):1135-42.LS

Abstract

Thiazolidinediones (TZDs) are a new class of antidiabetic drugs, having an insulin sensitizing effect in patients with type 2 diabetes. The contribution of oxidative stress from the standpoint of lipid and protein damage, alteration in endogenous antioxidant enzymes and effects of newly synthesized compounds, 5-[4-2-(6,7-Dimethyl-1,2,3,4-tetrahydro-2-oxo-4-quinoxalinyl)ethoxy]phenyl]methylene]thiazolid- ine-2,4-dione, (C(1)) in normal/alloxan-induced diabetic rats form the focus area of this study. Its effect was compared to two well-known TZDs, namely pioglitazone and rosiglitazone. It has been concluded from results that after thirty days of administration of C(1), Pg and Rg in alloxan-induced diabetic animal groups, the blood glucose level decreased, more remarkably in C(1) treated group. Also oxidative damage has been studied by estimating hepatic superoxide dismutase (SOD) activity, which was found to be increased (p<0.001 vs. control). An inverse change in SOD values between hepatic and pancreatic/kidney tissues were observed. Treatment with the test compounds lowered the activity of SOD in liver while increased its activity in kidney and pancreas. Similar normalizing effect of C(1) on liver, pancreatic and renal catalase (CAT)/ glutathione peroxidase (GPx) activities were pronounced in diabetic rats (p<0.001 vs. diabetic rats). Decreased reduced glutathione (GSH) content, found in diabetic animals, was significantly elevated to normal levels by C(1) treatment. The treatment with C(1) also decreased the levels of nitric oxide and increased the activities of glutathione-s-transferase and glutathione reductase, as compared to diabetic animals. Evidence of oxidative damage to lipids and proteins was shown through the quantification of protein carbonyl (in tissues) and malondialdehyde levels (both serum and tissues). It was observed that the protein/lipid damage in diabetic rats was improved by treatment with C(1). Total antioxidant activity (TAA) was found to be enhanced in C(1) treated rats (p>0.05 vs. group3, p<0.001 vs. group2, p<0.001 vs. group 4). These results suggest that the newly synthesized TZD derivative (C(1)) has a potential to act as antihyperglycemic and antioxidant agent. In addition, for all parameters checked, it has better efficacy than rosiglitazone and is as effective as pioglitazone.

Authors+Show Affiliations

Dr. B.R.Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007, India.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17234217

Citation

Chaudhry, Jyoti, et al. "Antihyperglycemic Effect of a New Thiazolidinedione Analogue and Its Role in Ameliorating Oxidative Stress in Alloxan-induced Diabetic Rats." Life Sciences, vol. 80, no. 12, 2007, pp. 1135-42.
Chaudhry J, Ghosh NN, Roy K, et al. Antihyperglycemic effect of a new thiazolidinedione analogue and its role in ameliorating oxidative stress in alloxan-induced diabetic rats. Life Sci. 2007;80(12):1135-42.
Chaudhry, J., Ghosh, N. N., Roy, K., & Chandra, R. (2007). Antihyperglycemic effect of a new thiazolidinedione analogue and its role in ameliorating oxidative stress in alloxan-induced diabetic rats. Life Sciences, 80(12), 1135-42.
Chaudhry J, et al. Antihyperglycemic Effect of a New Thiazolidinedione Analogue and Its Role in Ameliorating Oxidative Stress in Alloxan-induced Diabetic Rats. Life Sci. 2007 Feb 27;80(12):1135-42. PubMed PMID: 17234217.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antihyperglycemic effect of a new thiazolidinedione analogue and its role in ameliorating oxidative stress in alloxan-induced diabetic rats. AU - Chaudhry,Jyoti, AU - Ghosh,Narendra Nath, AU - Roy,Kapil, AU - Chandra,Ramesh, Y1 - 2006/12/15/ PY - 2006/07/06/received PY - 2006/12/02/revised PY - 2006/12/11/accepted PY - 2007/1/20/pubmed PY - 2007/3/30/medline PY - 2007/1/20/entrez SP - 1135 EP - 42 JF - Life sciences JO - Life Sci VL - 80 IS - 12 N2 - Thiazolidinediones (TZDs) are a new class of antidiabetic drugs, having an insulin sensitizing effect in patients with type 2 diabetes. The contribution of oxidative stress from the standpoint of lipid and protein damage, alteration in endogenous antioxidant enzymes and effects of newly synthesized compounds, 5-[4-2-(6,7-Dimethyl-1,2,3,4-tetrahydro-2-oxo-4-quinoxalinyl)ethoxy]phenyl]methylene]thiazolid- ine-2,4-dione, (C(1)) in normal/alloxan-induced diabetic rats form the focus area of this study. Its effect was compared to two well-known TZDs, namely pioglitazone and rosiglitazone. It has been concluded from results that after thirty days of administration of C(1), Pg and Rg in alloxan-induced diabetic animal groups, the blood glucose level decreased, more remarkably in C(1) treated group. Also oxidative damage has been studied by estimating hepatic superoxide dismutase (SOD) activity, which was found to be increased (p<0.001 vs. control). An inverse change in SOD values between hepatic and pancreatic/kidney tissues were observed. Treatment with the test compounds lowered the activity of SOD in liver while increased its activity in kidney and pancreas. Similar normalizing effect of C(1) on liver, pancreatic and renal catalase (CAT)/ glutathione peroxidase (GPx) activities were pronounced in diabetic rats (p<0.001 vs. diabetic rats). Decreased reduced glutathione (GSH) content, found in diabetic animals, was significantly elevated to normal levels by C(1) treatment. The treatment with C(1) also decreased the levels of nitric oxide and increased the activities of glutathione-s-transferase and glutathione reductase, as compared to diabetic animals. Evidence of oxidative damage to lipids and proteins was shown through the quantification of protein carbonyl (in tissues) and malondialdehyde levels (both serum and tissues). It was observed that the protein/lipid damage in diabetic rats was improved by treatment with C(1). Total antioxidant activity (TAA) was found to be enhanced in C(1) treated rats (p>0.05 vs. group3, p<0.001 vs. group2, p<0.001 vs. group 4). These results suggest that the newly synthesized TZD derivative (C(1)) has a potential to act as antihyperglycemic and antioxidant agent. In addition, for all parameters checked, it has better efficacy than rosiglitazone and is as effective as pioglitazone. SN - 0024-3205 UR - https://www.unboundmedicine.com/medline/citation/17234217/Antihyperglycemic_effect_of_a_new_thiazolidinedione_analogue_and_its_role_in_ameliorating_oxidative_stress_in_alloxan_induced_diabetic_rats_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0024-3205(06)00953-2 DB - PRIME DP - Unbound Medicine ER -