A review of the hepatotoxic plant Lantana camara.
Lantana (Lantana camara Linn) is a noxious weed that grows in many tropical and subtropical parts of the world. Ingestion of lantana foliage by grazing animals causes cholestasis and hepatotoxicity. Both ruminants and nonruminant animals such as guinea pigs, rabbits, and female rats are susceptible to the hepatotoxic action of lantana toxins. The hepatotoxins are pentacyclic triterpenoids called lantadenes. Molecular structure of lantadenes has been determined. Green unripe fruits of the plant are toxic to humans. Lantana spp. exert allelopathic action on the neighboring vegetation. The allelochemicals have been identified as phenolics, with umbelliferone, methylcoumarin, and salicylic acid being the most phytotoxic. In addition to phenolics, a recent report indicates lantadene A and B as more potent allelochemicals. Management of lantana toxicosis in animals is achieved by drenching with activated charcoal and supportive therapy. Recent reports on the bilirubin clearance effect of Chinese herbal tea Yin Zhi Huang (decoction of the plant Yin Chin, Artemisia capillaries, and three other herbs) or its active ingredient 6,7-dimethylesculetin, in jaundice are very exciting and warrant investigations on its, possible, ameliorative effects in lantana intoxicated animals. Research is being conducted on new drug discovery based on natural products in different parts of the lantana plant.
Sharma
Om P
OP
Biochemistry Laboratory, Indian Veterinary Research Institute, Regional Station. Kangra Valley, Palampur, India. omsharma53@yahoo.com
Sharma
Sarita
S
Pattabhi
Vasantha
V
Mahato
Shashi B
SB
Sharma
Pritam D
PD
D000818:Animals; D000829:Animals, Domestic; D056486:Chemical and Drug Induced Liver Injury / Q000209:etiology / Q000662:veterinary*; D002779:Cholestasis / Q000139:chemically induced / Q000662:veterinary*; D006801:Humans; D032410:Lantana / Q000737:chemistry / Q000633:toxicity*; D010939:Plant Poisoning / Q000628:therapy / Q000662:veterinary; D010947:Plants, Toxic / Q000633:toxicity*; D013045:Species Specificity; D014315:Triterpenes / Q000032:analysis
D014315:Triterpenes