Aim: The aim is to evaluate the antioxidant potentials of Eucalyptus camaldulensis methanol stem bark extract (ECMSBE) on Wister albino rats. Methodology: The phytochemical screening of ECMSBE was conducted using standard methods. A total of 36 albino rats were used for the antioxidant studies. The rats were divided into six (6) groups of six rats. Control group received distilled water orally at 2ml/kg. Oxidative stress was induced in groups 2 to group 6 CCl4 (1ml/kg, s.c) at every 72hrs for 10 days. Group 2 was untreated while groups 3 – 6 received doses of 50, 100, 150 and 200mg/kg of ECMSBE respectively. On the 11th day, the rats were sacrificed and the liver was removed and homogenised and oxidative stress parameters were determined. Results: Phytochemical analysis of ECMSBE revealed the presence of saponins, flavonoids, tannins, phenols, glycosides, steroids, terpenoids and resins. There was no significant difference (P<.05) between the CCl4 induced group and the group treated with ECMSBE (50mg/kg). However, their concentrations were significantly different from the group treated with ECMSBE (100mg/kg – 200mg/kg) when compared to the group treated with CCl4 Only. The CCl4-induced group had its vitamin A, vitamin C and vitamin E concentrations significant different (P<.05) from the groups treated with ECMSBE (100, 150 and 200mg/kg body weight). There was no significant difference (P>.05) in the levels of SOD, CAT and GPx between the group induced with CCl4 only and the group treated with ECMSBE (50mg/kg), however, it these concentrations were significantly higher (P<.05). The enzymatic antioxidants concentration in the normal control group was not significantly different (P>.05) when compared the group that was treated with ECMSBE (200mg/kg) Conclusion: The result suggest that the extract of E. camaldulensis possessed antioxidant properties which can be used as effective protecting agents against oxidative stress and other diseases.
Aim: The aim is to evaluate the toxicological profiles of methanol stem bark extract of E. camaldulensis (MSEEC) on Wister albino rats. Methods: Acute toxicity study was conducted according to OECD, 2001. The rats were grouped into six groups of one rat each and were given single oral dose 5000 mg/kg of the extract. A total of 30 albino rats of both sex were used for the toxicological study. The rats were divided into five (5) groups of six (6) rats. Control group (group 1) received distilled water orally 1 ml/kg. Groups (2-5) received doses of 500, 1000, 1500 and 2000 mg/kg of the extracts. The experiment lasted for 28 days. Data analysis was done using SPSS version 20.0. Results: The LD50 of MSEEC was greater than 5000mg/kg. The sub-chronic doses of 500-2000 mg/kg of the extract shows no significant (P>.05) difference of the hematological parameters when compared to the control. The Serum biochemical parameters were no significant (P>.05) compared to the control. However, there was an increase in creatinine level at doses 500, 1500 and 200 mg/kg. Conclusion: The results from this study indicate that administration of methanol stem bark extract of Eucalyptus camaldulensis did not produce significant toxic effect.
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