Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3835

Full Length Research Paper

Hypoglycemic effect of Lagerstroemia speciosa (L.) Pers. on alloxan-induced diabetic mice

N. C. Tanquilut1, M. R. C. Tanquilut2, M. A. C. Estacio3, E. B. Torres3, J. C. Rosario4 and B. A. S. Reyes1,4*
1Institute of Veterinary Medicine and Zootechnics, Pampanga Agricultural College, Magalang 2011, Pampanga, Philippines. 2Institute of Engineering and Computer Studies, Pampanga Agricultural College Magalang 2011, Pampanga, Philippines. 3College of Veterinary Medicine, University of the Philippines, Los Banos, Laguna, Philippines, Los Baños. 4Thomas Jefferson University, Department of Neurosurgery, Farber Institute for Neurosciences, Philadelphia, Pennsylvania 19107, USA.
Email: [email protected]

  •  Accepted: 07 November 2009
  •  Published: 31 December 2009


Lagerstroemia speciosa (L.) Pers. known as “banaba” is traditionally used as a herbal medicine in the Philippines. Although Lagerstroemia speciosa has been shown to produce hypoglycemic effects in some mice models of diabetes, there are no reports of the effects of this substance in alloxan-induced diabetic mice. Thus, the present study aimed to elucidate the hypoglycemic effects of L. speciosa in ICR strain of mice. Diabetes was induced by the intraperitoneal injection of alloxan. Spray dried L. speciosa powder (1000 mg/kg) or decoction (20 ml/kg) was administered on alloxan-induced diabetic male ICR mice for 28 days by gavage.  The effects of L. speciosa on blood and urinary glucose levels and body weight, feed intake and water intake were measured. Spray dried L. speciosa powder and decoction significantly reduced blood (< 0.01) and urinary glucose (< 0.05) levels of diabetic mice from day 8 to 28 compared with the diabetic control. These mice also had lower (< 0.05) body weight compared with the diabetic control from day 15 to day 28. The feed intake of diabetic mice was higher (< 0.05) compared with non-diabetic control and L. speciosa-treated diabetic mice from day 22 to 28. A comparable fluid intake was evident among non-diabetic mice and L. speciosa-treated diabetic mice from day 8 to day 28 which was significantly lower (< 0.01) compared with the diabetic mice. These results suggest that L. speciosa possesses beneficial antihyperglycemic activity in controlling the elevated glucose level in alloxan-induced diabetic mice. 


Key words: Antihyperglycemic activity, Lagerstroemia speciosa, diabetes mellitus, alloxan-induced diabetes, mice.