[Investigation of the in vitro effects of Melissa officinalis L., Mentha x piperita L. and Ocimum basilicum L. (Lamiaceae) essential oils on the cysts and trophozoites of Acanthamoeba castellani].

Acanthamoeba species are free living amoeba found widely all over the world. They are responsible for Acanthamoeba keratitis (AK), an infection which is especially seen in contact lens users and after minor corneal traumas, that may lead blindness. At present, antifungals and antiseptics are used for the treatment of AK cases, however, some problems such as long treatment periods and the occurrence of side effects, resistance of cyst forms against drugs, emphasize the need for new drugs.

Antimicrobial, insecticidal and phytotoxic activities of Cotinus coggyria Scop. essential oil (Anacardiaceae).

The essential oil of Cotinus coggyria Scop.' leaves was found to be rich in α-pinene (43.1%), limonene (21.

Flavonoids in Helichrysum pamphylicum inhibit mammalian type I DNA topoisomerase.

DNA topoisomerases are important targets for cancer chemotherapy. We investigated the effects of a methanolic extract of Helichrysum pamphylicum on mammalian DNA topoisomerase I via in vitro plasmid supercoil relaxation assays. The extracts manifested a considerable inhibition of the enzyme's activity in a dose-dependent manner.

Essential oil composition and antioxidant activity of endemic Ziziphora taurica subsp. cleonioides.

The essential oil of Turkish endemic Ziziphora taurica subsp. cleonioides aerial parts was found to contain (+)-pulegone (81.86%), limonene (4.

Hypericum triquetrifolium Turra. Extract exhibits antiinflammatory activity in the rat.

The aim of the present study was to explore the probable antiinflammatory effect of Hypericum triquetrifolium Turra. in a rat model of carrageenan induced inflammation. Male Wistar rats were treated intraperitoneally with 0.