Now showing items 631-640 of 645
Reconstitution of oxidative phosphorylation in submitochondrial particles by a soluble protein phosphoryl transferase
(Elsevier, 1968-01)
A protein designated phosphoryl transferase has been isolated from beef heart mitochondria and has been found to increase the ability of Submitochondrial particles, oxidizing either NADH or succinate, to synthesize ATP ...
Gas chromatographic determination of gallopamil and norgallopamil in human plasma
(Elsevier, 1989)
A highly sensitive gas chromatographic assay is described for the simultaneous determination of gallopamil, a calcium channel blocking agent, and its major metabolite, norgallopamil. A multi-step extraction procedure is ...
The effect of daily ingestion of caffeine on the microsomal enzymes of rat liver
(Elsevier, 1973-02)
The effect of repeated ingestion of caffeine on rat-liver microsoma enzymes was studied. In the rat, ingestion of 20-24 mg caffeine/kg/day in the drinking water for more than 2 wk inhibited aminopyrine N-demethylase activity. ...
Iodine analysis of biological samples by neutron activation of 127I, with scintillation counting of cerenkov radiation
(Elsevier, 1971-03)
The naturally occurring isotope, 127I, has been measured by neutron activation, postirradiation extraction of 128I plus 127I (added carrier), and timed scintillation counting of aqueous solution utilizing Cerenkov radiation. ...
Measures of viability in isolated cells
(Elsevier, 1975-06)
Various methods were compared for estimation of cell viability. Cell count, uptake of trypan blue, release of cellular LDH, as well as cell contents of K+ and Na+ were determined in leukocytes, spleen cells, and Ehrlich ...
Assay and properties of the enzyme catalyzing the biosynthesis of 1-O-alkyl dihydroxyacetone 3-phosphate
(Elsevier, 1981-10-01)
The properties of the enzyme alkyl dihydroxyacetone phosphate synthase (1-O-acyl dihydroxyacetone 3-phosphate + ROH --> 1-O-alkyl dihydroxyacetone 3-phosphate + fatty acid) in Ehrlich ascites tumor cell microsomes were ...
Calcium compartmentation in isolated renal tubules in suspension
(Elsevier, 1988-04)
Substantial increases of total cell Ca2+ have been observed in suspensions of isolated rabbit proximal tubules subjected to hypoxic injury or treated with exogenous ATP followed by apparent recovery with reoxygenation of ...
[omega]-1 and [omega]-2 hydroxylation of prostaglandins by rabbit hepatic microsomal cytochrome P-450 isozyme 6
(Elsevier, 1985-11-15)
Incubation of prostaglandin E1 (PGE1) with liver microsomes from control rabbits and from rabbits treated with ethanol or imidazole yielded 18-, 19-, and 20-hydroxy metabolites, representing hydroxylation at [omega]-2, ...
Specific steroid response from a nonspecific DNA element
(Elsevier, 1994-06)
A fundamental dilemma of steroid hormone regulation is how specific transcription is attained in vivo when several receptors recognize the same DNA sequence in vitro. We have identified an enhancer of the mouse sex-limited ...