In a new in vitro study researchers tested the hypothesis that mixtures of pyrethroids have a dose-additive effect that is, that pyrethroids as a chemical group produce toxicity in mammals via a common mode of action and that the combined toxicity of a pyrethroid mixture reflects the sum of its constituents' toxicities [ EHP 119 9):1239 1246; Cao et al.].
The results show that a simple rationally designed model β-sheet peptide recapitulates many important features of Aβ peptide structure and function, reinforcing the idea that toxicity arises, at least in part, from a common mode of action on membranes that is independent of specific aspects of the amino acid sequence.
In particular, motorcycle taxis are a common mode of transport in Lima, but drivers are often under-aged, vehicles are often filled beyond capacity, and they frequently violate traffic codes.
In New York, Twitter is a common mode of communication between youth gangs, said a Harlem pastor, Vernon Williams, who monitors the online messages of various "crews" in an effort to head off potential wars.
Although substantial differences exist between the 'mass-motion' and the 'mood-motion' substrates, the correction techniques applied in both systems exhibit a common mode of action, thus indicate possible similarities of the underlying mechanisms.
Organophosphates (OPs) were the first class of insecticides to have revised risk assessments under FQPA, in part because of a common mode of action shared among active ingredients.
Because it appears that the pattern of gene expression is characteristic of a particular mechanism of action, this technology may be useful in identifying agents with a common mode of action for the purpose of conducting cumulative risk assessment.
Hence, in species living in high habitats, where bridging is a common mode of locomotion [ 32- 36] 36], being a good "bridger" could be adaptive for males, since they could be favored from sexual selection by scramble competition.
A pioneer of the poetry of the suburbs -- now a common mode in which the ordinary is routinely revealed as extraordinary -- Van Duyn also knows that the ordinary is frequently just that.
Tier 2 Assessment: Defined in WHO approach to mixtures as a refined assessment that only assumes additivity with in groups of chemicals where a common mode of action occurs.
