Objective:

The current experiment was conducted to investigate the combined effect of levofloxacin and metformin treatment on glucose level in blood, MDA, nitrite, level, anxiety of STZ+NAD induced diabetic rats.

Methods:

In this study, wistar rats have been used. After receiving a single dose of STZ+NAD (45 mg/kg, i.p.+ 50 mg/kg, i.p.), the rats developed diabetes. Glucose levels in diabetic rats exceed 200 mg/dl (verified on the third day). Saline was administered to non-diabetic rats (controls). The diabetic rats were given alone metformin (50 mg/kg, p.o.), levofloxacin (30 mg/kg, i.p.), or metformin + levofloxacin for fourteen days. The blood sample was obtained after the 14th day of therapy, and the rats were given to behavioral parameter to determine locomotor-activity and anxiousness level. Blood plasma sample has been separately and used for determination of nitrite and malondialdehyde (MDA) level.

Results:

It was observed that the combined treatment of metformin and levofloxacin significant rise glucose in blood of diabetic rats as compares to diabetic control (P < 0.05) and alone metformin treated diabetic rats (P < 0.001) at day-3 and day-7. Further, combined treatment of metformin and levofloxacin significantly reduce time spend at center of OFT (P < 0.001), significantly reduce time spend and entry made in light chamber of LDT (P < 0.001), significantly rise time spend in open arm and reduce the time spent in closed arm of EPM (P < 0.001) as compare to alone metformin treated diabetic rats. Further, combined treatment of metformin and levofloxacin significant increase nitrite level, (P < 0.001) but reduce the MDA level in plasma as compare to metformin alone treated-diabetic rats (P < 0.001).

Conclusion:

In conclusion, the present study suggested the combined treatments of levofloxacin and metformin may modulate the glucose level and anxiety-related activity.

Keywords: Diabetes, glucose, malondialdehyde, anxiety, levofloxacin.