Accumulation of Aroclor 1254 in grass shrimp (Palaemonetes pugio) in laboratory and field exposures.
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Animals↗
Biomedical subjects
G H Cook
Publications and source records attributed to G H Cook.
Activation of thyroid membrane adenylate cyclase by purine nucleotides.
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Adenylyl Cyclase Inhibitors↗
Stimulation of steroid secretion in adrenal tumor cells by choleragen.
Choleragen, the pure protein from cholera toxin, stimulates steroid secretion by Y-1 adrenal tumor cells in culture. The secreted steroids are the same as seen after addition of adrenocorticotropic hormone. Half-maximal stimulation occurs at 15 pM; stimulation is essentially irreversible by washing and partially reversible (for about 1 hr) by antibody, and there is a latent period of about 60 min before stimulation is seen. Stimulation of adenylate cyclase occurs at about 30-fold higher choleragen concentrations. Gangliosides inhibit choleragen stimulation when added before but not after the toxin. Lipopolysaccharides from Escherichia coli, Salmonella typhosa, and Serratia marcescens also stimulate steroid secretion, but are less potent than choleragen.
Adenylyl Cyclases↗
Determination of malathion, malaoxon, and mono- and dicarboxylic acids of malathion in fish, oyster, and shrimp tissue.
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Animals↗