Now showing items 21-30 of 40
Indomethacin inhibition of glutathione S-transferases
(Elsevier, 1983-05-16)
Indomethacin inhibited rat liver glutathione S-transferases (EC 2.5.1.18). Its inhibition was non-competitive with respect to 3,4-dichloronitrobenzene with an apparent Ki of 5.3 x 10-5 M and uncompetitive with respect ...
Phosphodiesteratic breakdown of endogenous polyphosphoinositides in nerve ending membranes
(Elsevier, 1983-05-16)
When a membrane preparation, obtained by freezing and thawing nerve endings labeled by preincubation with 32Pi, is incubated in the presence of millimolar Ca2+, there is a rapid and selective loss of label from the ...
Kin selection and conflict in seed maturation
(Elsevier, 1983-01-07)
There are four genetically distinct components in the developing seeds of flowering plants: maternal sporophyte, gametophyte, endosperm, and embryo. Each component can potentially influence the quantity or quality of ...
[3H] dynorphin binding to guinea pig and rat brain
(Elsevier, 1983)
[3H] Dynorphin can be shown to bind to the brains of both rat and guinea pigs with approximately 50% specific binding. Characterization of the binding in terms of multiple opiate receptor types supports the kappa selectivity ...
Recognition chemistry of anionic amino acids for hepatocyte transport and for neurotransmittory action compared
(Elsevier, 1983-12-05)
Comparison of neuronal and non-neuronal membrane transport of, and neuroexcitation by, the dicarboxylic amino acids bring out provocative similarities in structural selectivity, and hence in the strategies for studying ...
Comparison of six rabbit liver cytochrome P-450 isozymes in formation of a reactive metabolite of acetaminophen
(Elsevier, 1983-04-15)
This laboratory has recently reported the isolation of an ethanol-inducible form of rabbit liver microsomal cytochrome P-450, designated isozyme 3a. In view of the reports of others that the hepatotoxicity of acetaminophen ...
Changes in alpha2 adrenoreceptors in various areas of the rat brain after long-term administration of "mu" and "kappa" opiate agonists
(Elsevier, 1983)
Clonidine, an alpha2 adrenoreceptor agonist, is used to treat opiate dependent individuals who are experiencing the signs and symptoms of withdrawal. Changes in the apparent number of alpha2 adrenoreceptors in specific ...
Models of epidemics and endemicity in genetically variable host populations
(Springer-Verlag, 1983-07)
A discrete time genetics model is developed for populations that are undergoing selection due to infectious disease. It is assumed that the generation time of the host and infectious agent are non-synchronous and that only ...
Feeding ecology and territoriality of the Cactus Finch Geospiza scandens on Isla Daphne Major, Galápagos
(Springer-Verlag; Springer-Verlag GmbH & CO. KG, 1983-04)
In this study we investigated the relationship between food availability, feeding ecology and territoriality in a population of Cactus Finches, Geospiza scandens , on Isla Daphne Major, Galápagos, between 1979 and 1981.
The effects of size of opening in vegetation and litter cover on seedling establishment of goldenrods ( Solidago spp.)
(Springer-Verlag, 1983-11)
We investigated the effects of size of opening in the vegetation and litter cover on seedling establishment of two species of goldenrods ( Solidago spp.) in an abandoned field in southwestern Michigan, U.S.A. Seeds of S. ...