Abstract
Several studies have established the ethnobotanical benefits of Pupalia lappacea (PL) in laboratory animals without extensive toxicological evaluation of its safety profiles. Thus, an extensive toxicological investigation of sub-chronic oral administration of the hydroethanol leaf extract of P.lappacea in rodents was carried out in this study. Different groups of rats were treated orally with the extract (10, 50 and 250mg/kg) daily for 90 consecutive days. The control group received distilled water (10mL/kg). After 90days, some rats were left for additional 30days without treatment for reversibility study. Blood and organs samples were collected for different evaluations at the end of study periods. The extract decreased the bodyweights, feeding and water intakes in female rats. PL increased the weights of the liver and kidney in male rats. PL increased the red blood cell (RBC), packed cell volume (PCV), hemoglobin (Hb), triglycerides (TRIG), cholesterol and high density lipoprotein (HDL) contents in rats. PL (250mg/kg) significantly reduced the sperm motility and serum testosterone level. Cyto-architectural distortions of the testes, liver and spleen were visible. The findings showed that P.lappacea is relatively safe at lower doses but cautions should be taken at higher dose.
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