Efficacy screening

Shoptaw S., Watson D.W., Reiber C. et al. Randomized controlled pilot trial of cabergoline, hydergine and levodopa/carbidopa Los Angeles Cocaine Rapid Efficacy Screening Trial (CREST). Addiction. 100(Suppl. 1) 78, 2005. 

Skin Diseases in Laboratory Mice Approaches to Drug Target Identification and Efficacy Screening... 

Waving Lotions. The reagent most frequently used for the reduction of hair is thioglycolic acid [68-11-1]. Although a variety of other mercaptans have been screened (51), none has been able to match the unique combination of efficacy, safety, and low cost that is a hallmark of thioglycolic acid. 

Antioxidants may be assessed in a variety of ways. For screening and for fundamental studies the induction period and rate of oxidation of petroleum fractions with and without antioxidants present provide useful model systems. Since the effect of oxidation differs from polymer to polymer it is important to evaluate the efficacy of the antioxidant with respect to some property seriously affected by oxidation. Thus for polyethylene it is common to study changes in flow properties and in power factor in polypropylene, flow properties and tendency to embrittlement in natural rubber vulcanisates, changes in tensile strength and tear strength. 

Screening Techniques for Detecting Toxicity. Simple toxicity screening techniques are necessary to identify toxic species and to monitor the efficacy of isolation and purification procedures used to purify toxins. Atterwill and Steele 108) have recently comprehensively reviewed in vitro methods for toxicology and so much of the following is in the nature of a general overview. 

Abbott has also demonstrated in vivo efficacy with two piperazine amides, A-304121 (26) and A-317920 (27). Both (26) and (27) bind to the rat H3 receptor with high affinity (pA) = 9.15 and 8.6, respectively) [92] and are active in several in vivo models, including the acute dipsogenia model and models of cognitive performance and inhibitory avoidance [93]. Unfortunately, these compounds showed markedly reduced affinity for the human H3 receptor, reinforcing the need to screen against the human receptor. 

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