Abstract

Ethnopharmacological relevance

Cordia verbenacea is a medicinal plant popularly used in Brazil as anti-inflammatory, antiulcer and anti-rheumatic agent without detailed pharmacological and toxicological studies.

Aim of the study

The study was aimed to investigate the effects of Cordia verbenacea in antiulcer, analgesic and antioxidant assays, as well as to evaluate its toxic effects and phytochemical profile.

Material and methods

Antiulcer activity of plant extract was evaluated using ethanol/HCl, ethanol and piroxican-induced gastric lesions methods. The pH, volume and total acid of gastric juice were determined by pylorus-ligated assay. Analgesic activity was evaluated by writhing, tail-flick and hot-plate tests. Antioxidant activity was determined by in vitro lipoperoxidation assay. Acute toxicity and number of deaths were evaluated by Hippocratic screening.

Results

The ethanol leaf extract shows a potent antiulcer activity in the ethanol/HCl and absolute ethanol-induced gastric lesions. The IC₅₀ value of plant extract on the lipid peroxidation was 76.11 μg/ml. Preliminary phytochemical tests were positive for flavonoids, steroids, saponins, fixed acids, alkaloids and phenols. In the analgesic models the extract did not present any activity.

Conclusions

Cordial verbenaceae showed a potent antiulcer activity at the dose of 125 mg/kg and this effect may be associated with an improvement in stomach antioxidant mechanisms.

Keywords: Cordia verbenacea; Boraginaceae; Antiulcer; Analgesic; Antioxidant; Acute toxicity

Article Outline

1. Introduction

2. Material and methods

2.1. Plant material

2.2. Preparation of the extracts

2.3. Animals

2.4. Antiulcer activity

2.4.1. Ethanol-induced gastric mucosal lesion in l-NAME pre-treated mice

2.4.2. Shay ulcer

2.5. Antioxidant activity

2.6. Analgesic activity

2.7. Acute toxicity studies

2.8. Phytochemical screening

2.9. Statistical analysis

3. Results

3.1. Antiulcer activity

3.2. Antioxidant activity

3.3. Analgesic activity

3.4. Acute toxicity studies

3.5. Phytochemical screening

4. Discussion

Acknowledgements

References