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Extract of Woodfordia fruticosa flowers ameliorates hyperglycemia, oxidative stress and improves β-cell function in streptozotocin-nicotinamide induced diabetic rats.
J Ethnopharmacol. 2015 Dec 04; 175:229-40.JE

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE

The art of Ayurveda and the traditional healing system in India have reflected the ethnomedicinal importance of the plant Woodfordia fruticosa Kurtz, which demonstrates its vast usage in the Ayurvedic preparations as well as in the management of diabetes by the traditional healers.

AIMS OF STUDY

The study aimed to ascertain the antidiabetic potential of W. fruticosa flower methanolic extract (WF) on Streptozotocin (STZ)-nicotinamide-induced diabetic rat model.

MATERIALS AND METHODS

Diabetes was induced in Sprague Dawley (SD) rats by STZ-nicotinamide and thereafter diabetic rats were treated with three different doses of WF (100, 200 and 400mg/kg body weight) respectively and glibenclamide as a positive control. Biochemical parameters such as blood glucose, serum insulin and C-peptide levels were measured with oxidative stress markers. Furthermore, histology of liver and pancreas was carried out to evaluate glycogen content and β-cell structures. Moreover, immunohistochemistry and western blot analysis were performed on kidney and pancreas tissues to determine renal Bcl-2, pancreatic insulin and glucose transporter (GLUT-2, 4) protein expression in all the experimental groups.

RESULTS

The acute toxicity study showed non-toxic nature of all the three doses of WF. Further, studies on diabetic rats exhibited anti-hyperglycemic effects by upregulating serum insulin and C-peptide levels. Similarly, WF shown to ameliorate oxidative stress by downregulating LPO levels and augmenting the antioxidant enzyme (ABTS). Furthermore, histopathological analysis demonstrate recovery in the structural degeneration of β-cells mass of pancreas tissue with increase in the liver glycogen content of the diabetic rats. Interestingly, protective nature of the extract was further revealed by the immunohistochemical study result which displayed upregulation in the insulin and renal Bcl-2 expression, the anti apoptosis protein. Moreover, western blot result have shown slight alteration in the GLUT-2 and GLUT-4 protein expression with the highest dose of WFc treatment, that might have stimulated glucose uptake in the pancreas and played an important role in attenuating the blood glucose levels.

CONCLUSION

The overall study result have demonstrated the potential of WF in the management of diabetes and its related complications, thus warrants further investigation on its major compounds with in depth mechanistic studies at molecular level.

Authors+Show Affiliations

Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia. Electronic address: aditya@um.edu.my.Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.

Pub Type(s)

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

Language

eng

PubMed ID

26342523

Citation

Arya, Aditya, et al. "Extract of Woodfordia Fruticosa Flowers Ameliorates Hyperglycemia, Oxidative Stress and Improves Β-cell Function in Streptozotocin-nicotinamide Induced Diabetic Rats." Journal of Ethnopharmacology, vol. 175, 2015, pp. 229-40.
Arya A, Al-Obaidi MM, Karim RB, et al. Extract of Woodfordia fruticosa flowers ameliorates hyperglycemia, oxidative stress and improves β-cell function in streptozotocin-nicotinamide induced diabetic rats. J Ethnopharmacol. 2015;175:229-40.
Arya, A., Al-Obaidi, M. M., Karim, R. B., Taha, H., Khan, A. K., Shahid, N., Sayem, A. S., Looi, C. Y., Mustafa, M. R., Mohd, M. A., & Ali, H. M. (2015). Extract of Woodfordia fruticosa flowers ameliorates hyperglycemia, oxidative stress and improves β-cell function in streptozotocin-nicotinamide induced diabetic rats. Journal of Ethnopharmacology, 175, 229-40. https://doi.org/10.1016/j.jep.2015.08.057
Arya A, et al. Extract of Woodfordia Fruticosa Flowers Ameliorates Hyperglycemia, Oxidative Stress and Improves Β-cell Function in Streptozotocin-nicotinamide Induced Diabetic Rats. J Ethnopharmacol. 2015 Dec 4;175:229-40. PubMed PMID: 26342523.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Extract of Woodfordia fruticosa flowers ameliorates hyperglycemia, oxidative stress and improves β-cell function in streptozotocin-nicotinamide induced diabetic rats. AU - Arya,Aditya, AU - Al-Obaidi,Mazen M Jamil, AU - Karim,Rustini Binti, AU - Taha,Hairin, AU - Khan,Ataul Karim, AU - Shahid,Nayiar, AU - Sayem,Abu Sadat, AU - Looi,Chung Yeng, AU - Mustafa,Mohd Rais, AU - Mohd,Mustafa Ali, AU - Ali,Hapipah Mohd, Y1 - 2015/09/02/ PY - 2014/12/03/received PY - 2015/08/07/revised PY - 2015/08/31/accepted PY - 2015/9/7/entrez PY - 2015/9/8/pubmed PY - 2016/9/28/medline KW - Antidiabetic KW - Antioxidant KW - Bcl-2 KW - Glycogen KW - Insulin KW - Woodfordia fruticosa SP - 229 EP - 40 JF - Journal of ethnopharmacology JO - J Ethnopharmacol VL - 175 N2 - ETHNOPHARMACOLOGICAL RELEVANCE: The art of Ayurveda and the traditional healing system in India have reflected the ethnomedicinal importance of the plant Woodfordia fruticosa Kurtz, which demonstrates its vast usage in the Ayurvedic preparations as well as in the management of diabetes by the traditional healers. AIMS OF STUDY: The study aimed to ascertain the antidiabetic potential of W. fruticosa flower methanolic extract (WF) on Streptozotocin (STZ)-nicotinamide-induced diabetic rat model. MATERIALS AND METHODS: Diabetes was induced in Sprague Dawley (SD) rats by STZ-nicotinamide and thereafter diabetic rats were treated with three different doses of WF (100, 200 and 400mg/kg body weight) respectively and glibenclamide as a positive control. Biochemical parameters such as blood glucose, serum insulin and C-peptide levels were measured with oxidative stress markers. Furthermore, histology of liver and pancreas was carried out to evaluate glycogen content and β-cell structures. Moreover, immunohistochemistry and western blot analysis were performed on kidney and pancreas tissues to determine renal Bcl-2, pancreatic insulin and glucose transporter (GLUT-2, 4) protein expression in all the experimental groups. RESULTS: The acute toxicity study showed non-toxic nature of all the three doses of WF. Further, studies on diabetic rats exhibited anti-hyperglycemic effects by upregulating serum insulin and C-peptide levels. Similarly, WF shown to ameliorate oxidative stress by downregulating LPO levels and augmenting the antioxidant enzyme (ABTS). Furthermore, histopathological analysis demonstrate recovery in the structural degeneration of β-cells mass of pancreas tissue with increase in the liver glycogen content of the diabetic rats. Interestingly, protective nature of the extract was further revealed by the immunohistochemical study result which displayed upregulation in the insulin and renal Bcl-2 expression, the anti apoptosis protein. Moreover, western blot result have shown slight alteration in the GLUT-2 and GLUT-4 protein expression with the highest dose of WFc treatment, that might have stimulated glucose uptake in the pancreas and played an important role in attenuating the blood glucose levels. CONCLUSION: The overall study result have demonstrated the potential of WF in the management of diabetes and its related complications, thus warrants further investigation on its major compounds with in depth mechanistic studies at molecular level. SN - 1872-7573 UR - https://www.unboundmedicine.com/medline/citation/26342523/Extract_of_Woodfordia_fruticosa_flowers_ameliorates_hyperglycemia_oxidative_stress_and_improves_β_cell_function_in_streptozotocin_nicotinamide_induced_diabetic_rats_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0378-8741(15)30125-2 DB - PRIME DP - Unbound Medicine ER -