Mass fragmentographic determination of plasma catecholamines
نویسندگان
چکیده
منابع مشابه
Evaluation of a radioenzymic kit for determination of plasma catecholamines.
We evaluated a commercially available reagent test-kit (Upjohn) for simultaneously determining norepinephrine, epinephrine, and dopamine in 50-microL of plasma. The three catecholamines are enzymically converted into the radioactive O-methyl derivatives and separated by thin-layer chromatography. Day-to-day precision (CV) was 11, 10, and 14% for norepinephrine, epinephrine, and dopamine, respec...
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We describe the determination of 3-methoxy-4-hydroxy-phenylacetic acid, 3-methoxy-4-hydroxyphenylamandelic acid, and 3-methoxy-4-hydroxyphenylethylene glycol in amniotic fluid by means of mass fragmentography, with use of deuterated internal standards. The results expressed in terms of absolute concentration and creatinine concentration, are given as a function of gestational age. In the 15th t...
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A method is described for the estimation of adrenaline and noradrenaline in a 5 to 10 ml plasma sample.A batch technique of adsorption and elution from alumina is used and the final estimation is carried out using an automated fluorimetric technique based on the trihydroxyindole method. Fluorescence is stabilized first by thioglycollic acid to give noradrenaline concentrations only and then by ...
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SUMMARY By the use of a precise and sensitive double-isotope derivative technic, plasma cate-cholamine concentration was measured at 2-hour intervals in 10 patients during the first 48 hours of myocardial infarction. Plasma catecholamine concentration was elevated in most patients, but to an extremely variable degree. In each patient, however, the values were rather stable during the study peri...
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Featured Article: Eisenhofer G, Goldstein DS, Stull R, Keiser HR, Sunderland T, Murphy DL, Kopin IJ. Simultaneous liquid-chromatographic determination of 3,4-dihydroxyphenylglycol, catecholamines, and 3,4dihydroxyphenylalanine in plasma, and their responses to inhibition of monoamine oxidase. Clin Chem 1986;32:2030 –3. This report described a liquid chromatographic electrochemical detection (LC...
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ژورنال
عنوان ژورنال: Japanese Journal of Pharmacology
سال: 1978
ISSN: 0021-5198
DOI: 10.1016/s0021-5198(19)67121-0