Lethal and repellent effect of amitraz, eugenol and thymol against Triatoma infestans, the main vector of Trypanosoma cruzi in the southern of America.

The lethal and repellent effect of the synthetic insecticide amitraz and the botanical insecticides eugenol and thymol separately and together in binary mixtures was tested against late-stage nymphs of a susceptible strain of Triatoma infestans, the main vector of Trypanosoma cruzi, the etiological agent of Chagas disease, in the Southern Cone of America. For the lethality study, the LD was determined for each insecticide alone and in binary mixture by topical application. The combination index (CI) was established to quantify interactions occurring between the insecticides.

Current status of resistance to ivermectin in Rhipicephalus sanguineus sensu stricto infesting dogs in three provinces in Argentina.

Intensive use of macrocyclic lactones for parasite control exerts strong selective pressure for arthropods such as ticks to become resistant to them. Rhipicephalus sanguineus sensu stricto is a tick and disease vector of significant public health and veterinary importance worldwide. We assessed the toxicological response to the macrocyclic lactone ivermectin (IVM) in R.

A study of the effects of imidacloprid under laboratory and field conditions on nymphs of Triatoma infestans (Hemiptera: Reduviidae).

The aim of this study was to determine imidacloprid's lethal activity against fifth-instar nymphs of Triatoma infestans. In the first stage of this work, it was assayed the topical application of this insecticide on non-fed and repletion-fed nymphs. Results showed a DL three times greater in non-fed bugs than in those fully engorged.

Repellent and Lethal Activities of Extracts From Fruits of Chinaberry ( L., Meliaceae) Against .

is the principal vector of , parasite responsible of Chagas's Disease transmission in Argentina. Pyrethroids have become common pesticides for the control of but increasing resistance encourages the search of new alternatives and the use of natural products for biological control arises as a new strategy. L.

Evaluation of the toxic effects of doramectin, ivermectin and eprinomectin against Triatoma infestans using a rat model.

Introduction: Pyrethroids have been frequently and intensively used for controlling the triatomine vectors of Trypanosoma cruzi. The emergence of resistance to these insecticides has resulted in an urgent need to identify novel, alternative and complementary control strategies.

Objective: To evaluate the toxic effects of ivermectin, doramectin and eprinomectin on the bloodfeeding behaviour of Triatoma infestans using a rodent model.

Anti-inflammatory, anti-oxidant, and apoptotic activities of four plant species used in folk medicine in the Mediterranean basin.

The aim of this research was to study the potential anti-inflammatory activity of myrtle (Myrtus communis), sarsaparilla (Smilax aspera), Arabian or French lavender (Lavandula stoechas), and calamint (Calamintha nepeta) along with their apoptotic effects on the pro-inflammatory cells, and the correlation of these effects with the plants' potential anti-oxidant activity. Myrtle extract exhibited the highest inhibitory activity in the paw oedema induced by carrageenan (60% at 3 h), whereas calamint, lavender, and sarsaparilla produced inhibitions of 49%, 38%, and 47%, respectively. None of them had an effect on the TPA-induced ear oedema.

Antioxidant and cytotoxic properties of an aqueous extract from the Argentinean plant Hedeoma multiflorum.

Context: Hedeoma multiflorum Benth. (Lamiaceae) is widely used in Argentinean popular medicine for digestive and anti-spasmodic purposes. However, knowledge about its pharmacological properties has been poorly investigated.

Anti-inflammatory and apoptotic activities of pomolic acid isolated from Cecropia pachystachya.

The dichloromethane extract and pomolic acid ( 5) obtained from leaves of Cecropia pachystachya both reduced carrageenan-induced paw oedema in mice. Interestingly, while the triterpenoid inhibited the in vivo production of interleukin-1beta by 39 %, it had no effect on tumour necrosis factor-alpha production. We also demonstrated that both the dichloromethane extract and 5 inhibited the viability of human polymorphonuclear (PMN) cells in a time- and dose-dependent fashion.