BACKGROUND The evidence on the safety of topical preparations containing botanical extracts is limited. OBJECTIVES To assess (i) the use of botanically derived compounds in a large population, (ii) the incidence of cutaneous side-effects, and (iii) the diagnostic usefulness of patch testing. METHODS A questionnaire was used in 2661 patients to assess both the prevalence and type of topical ...

Supplementary data tml http://rspb.royalsocietypublishing.org/content/suppl/2009/03/06/rspb.2008.1685.DC1.h "Data Supplement" References http://rspb.royalsocietypublishing.org/content/276/1665/2243.full.html#ref-list-1 This article cites 15 articles, 2 of which can be accessed free Subject collections (129 articles) biophysics • (54 articles) biomaterials • Articles on similar topics can be f...

Bioassay-guided fractionation of an ethanolic extract of the aerial parts of Dolichandra cynanchoides Cham. (Bignoniaceae) led to the isolation of a natural wax with anti-insect activity against Spodoptera frugiperda (Noctuidae) and Epilachna paenulata (Coleptera). The compound was identified spectroscopically as an ester of a C27 fatty acid and a C25 alcohol, pentacosyl heptacosanoate (1). The...

the silverleaf whitefly, bemisia tabaci (hem.: aleyrodidae), is a key pest of greenhouse crops. nymphs and adults feed on plant sap and excrete honeydew, resulting in reduction of yield and quality. this pest has a high potential for developing resistant biotypes against different insecticides. therefore, it is necessary to study the efficacy of different categories of insecticides against b. t...

The use of botanical dietary supplements has grown steadily over the last 20 years despite incomplete information regarding active constituents, mechanisms of action, efficacy, and safety. An important but underinvestigated safety concern is the potential for popular botanical dietary supplements to interfere with the absorption, transport, and/or metabolism of pharmaceutical agents. Clinical t...

This work examines the feasibility of liquid chromatography/mass spectrometry (LC/MS) time-of-flight (TOF) in conjunction with LC/MSD ion trap to analyze chloronicotinyl insecticides: acetamiprid, imidacloprid, and thiacloprid, in four salad vegetables: tomatoes, peppers, lettuce, and cucumbers. Included in this report are the LC/MSD TOF and LC/MSD Trap spectra of the three chloronicotinyl inse...

while the «classical insecticides» (ddt: dieldrin, malathion, etc.) mainly affect the adult stage of insects, dimilin belongs to a new group of insecticidal compounds that kills the insect in its larval stages, but has no lethal affect on the adult insect. its empirical formula is c14h9h2~f2cl. diflubenzuron is proposed as common name for the trade name dimilin. studies were made on c. pipiens,...

in order to study the residues of phosphorous insecticides in mazandaran district of iran, ethion, azinphosmethyl, diazinon and malathion four most used pesticides were chosen and river water samples were collected in april to sept. 2000, throughout the mazandaran state. thin layer chromatography was used, since it was the best applicable method in area with reasonably high level of sensitivity...

Using standard WHO methodology, this study investigated the susceptibility of 4th instar Aedes aegypti (L) and Culex annulirostris (Skuse) larvae to three extracts from Callitris glaucophylla (J. Thompson & L. Johnson) (1: steam distillation extract, 2: liquefied refrigerant gas extract, and 3: methanol reflux extract), lambda-cyhalothrin (a synthetic pyrethroid insecticide) and fenitrothion (a...