title: Toxicological assessment of the hydroethanolic leaf extract of clerodendrum capitatum in Wistar rats.
abstract: BACKGROUND
  Clerodendrum capitatum (Willd) Schumach. & Thonn (Lamiaceae) is used in African traditional medicine for the treatment of malaria, hypertension, obesity, jaundice and diabetes however there is lack of experimental data on its possible toxicity. This study investigated the acute and 28 days sub-chronic toxicity of C. capitatum in Wistar rats.
  
  
  METHODS
  In acute toxicity tests, a single administration of the hydroethanolic C. capitatum leaf extract (5 g/kg) was given orally to 5 female rats. The general behavior, adverse effects and mortality were recorded for up to 14 days post treatment. On the 15(th) day, the rats were weighed and euthanized for necropsy. In sub-chronic toxicity tests, the extract (4, 8 and 16 g/kg/day) was given orally to both male and female rats for 28 days. The animal body weight was recorded throughout the experiment, while hematological and biochemical parameters of blood and relative organs weights were evaluated on the 29(th) day.
  
  
  RESULTS
  Clerodendrum Capitatum did not cause any death or any hazardous symptoms of acute toxicity, showing an LD50 higher than 5 g/kg. Sub-chronic administration of C. capitatum resulted in no noticeable changes in weight gain and water or food consumption. White blood cells and hemoglobin increased while urea concentration, liver enzymes, total cholesterol and glucose concentrations significantly decreased in treated animals. No changes in macroscopical aspect of organs were observed in the animals.
  
  
  CONCLUSIONS
  These results showed that acute or sub-chronic oral administration of the hydroethanolic leaf extract of Clerodendrum capitatum may be considered as relatively free of toxicity.
authors.affiliation: Laboratory of Physiology, Pharmacology and Toxicology, Faculty of Sciences, University of Lomé, Lomé, Togo.
authors.forename: Kokou
authors.initials: K
authors.lastname: Idoh
authors.affiliation: Laboratory of Physiology, Pharmacology and Toxicology, Faculty of Sciences, University of Lomé, Lomé, Togo.
authors.forename: Amegnona
authors.initials: A
authors.lastname: Agbonon
authors.affiliation: Laboratory of Pharmacology, Department of Pharmacy, Faculty of Health Sciences, University of Lomé, Lomé, Togo.
authors.forename: Yao
authors.initials: Y
authors.lastname: Potchoo
authors.affiliation: Laboratory of Physiology, Pharmacology and Toxicology, Faculty of Sciences, University of Lomé, Lomé, Togo.
authors.forename: Messanvi
authors.initials: M
authors.lastname: Gbeassor
mesh_terms: D000284:Administration, Oral; D000818:Animals; D032409:Clerodendrum / Q000737:chemistry*; D005260:Female; D007928:Lethal Dose 50; D008297:Male; D016488:Medicine, African Traditional; D009929:Organ Size / Q000187:drug effects; D010936:Plant Extracts / Q000008:administration & dosage / Q000633:toxicity*; D018515:Plant Leaves; D051381:Rats; D017208:Rats, Wistar; D023382:Toxicity Tests, Acute / Q000379:methods*; D059550:Toxicity Tests, Subchronic / Q000379:methods*
chemical_list: D010936:Plant Extracts
keywords: Clerodendrum capitatum; Wistar rats; oral toxicity; safety