A novel method of extraction of bamboo seed oil (Bambusa bambos Druce) and its promising effect on metabolic symptoms of experimentally induced polycystic ovarian disease

Objective: To evaluate the potential effect of bamboo seed oil in decreasing the major metabolic symptoms associated with letrozole-induced polycystic ovarian disease using female rat model. Materials and Methods: A new method of microwave-assisted extraction was developed. Female rats were grouped into four with six animals each. All rats were daily administered with letrozole (1 mg/kg b.wt.) for 21 days except control, and during this period, changes in estrous cycle were observed. After letrozole treatment, Group 2 was considered negative control, Groups 3 and 4 were treated orally with bamboo oil, 0.5 ml/kg b.wt. and 1 ml/kg b.wt., respectively, for 3 weeks (five consecutive estrus cycles). Various parameters such as estrus cycle, blood sugar level, lipid profile, and weights of reproductive system were determined. The characteristics of cystic ovaries were evaluated by histopathological studies. Results: The isolated bamboo oil restored estrus cyclicity showed hypoglycemic and hypolipidemic effects. 1 ml/kg b.wt. of bamboo oil showed a marked glucose reduction from 254.04 +/- 2.08 to 92.6 +/- 1.63, and levels of total cholesterol, very low-density lipoprotein, triglyceride were reduced from 186.45 +/- 2.28, 30.07 +/- 2.36, 100.36 +/- 2.35 to 152.14 +/- 2.63, 25.94 +/- 1.66, 93.32 +/- 1.09, respectively. Histopathological results showed the presence of ovulation and recovery from cystic ovaries. Conclusion: A novel and promising drug was isolated in the treatment and maintenance of various metabolic symptoms associated with polycystic ovary disease.