H. taltalense (Phil.) Johnst. (Heliotropiaceae) is an endemic species of the northern coast of Chile that produces a resinous exudate that covers its foliar surface and stems. Its chemical composition was analyzed for the first time, and two aromatic geranyl derivatives: filifolinol and filifolinyl senecionate and three flavonoids - naringenin, 3-O-methylgalangin and 7-O-methyleriodictiol - wer...

One adenoma and one adenocarcinoma of the islet cells and one adenoma of the exocrine pancreas were found in 3 out of 15 rats given a single dose (500 to 1500 mg/kg body weight) of pyrrolizidine alkaloids from Amsinckia intermedia Fisch and Mey (Boraginaceae), tarweed, a plant known to cause livestock losses from liver damage in the United States. Among rats treated with Heliotropium supinum L....

Aedes aegypti is a vector of dengue fever, which is a public health problem in the world. During epidemics, emphasis is laid on the use of insecticides for controlling mosquitoes. The application of easily degradable plant compounds is considered to be one of the safest methods to control insect pests and vectors as an alternative to synthetic pesticides. A study was made to monitor the effect ...