Ultraviolet Spectrophotometric Micromethod for Detemination of Biuret as Manganese Complexes

Spectrophotometric micromethod for measuring cholinesterase activity in serum or plasma.

A simple ultraviolet method has been developed for determining serum or plasma cholinesterase activity. The cholinesterase acts on acetylor butyrylthiocholine to release thiocholine, which reacts with 2,2’or 4,4’-dithiodipyridine, showing absorbance at 324 or 343 nm, respectively. The activity can be measured kinetically and alsoafter incubation for 3 to 5 mm at 20#{176} to 37#{176}C. A volume ...

Manganese(II) complexes of scorpiand-like azamacrocycles as MnSOD mimics.

Mn(II) complexes of scorpiand-type azamacrocycles constituted by a tretrazapyridinophane core appended with an ethylamino tail including 2- or 4-quinoline functionalities show very appealing in vitro SOD activity. The observed behaviour is related to structural and electrochemical parameters.

Spin-Triplet Cobalt Complexes of Biuret and Related Ligands

Spectrophotometric micromethod for the quantitative determination of the free erythrocyte protoporphyrin.

Interesthas developed recently (l-3) in the significance of the free protoporphyrin which van den Bergh and Hyman (4) reported in 1928 as being present in human erythrocytes. This “erythrocyte protoporphyrin” (EP) is identical with the protoporphyrin which, in combination with iron and globin, forms hemoglobin (1, 5). An increase in the quantity of free EP has been observed in immature erythroc...

SPECTROPHOTOMETRIC MICROMETHOD FOR THE QUANTITATIVE DETERMINATION OF THE FREE ERYTHROCYTE PROTOPORPHYRIN” BY MOISl% GRINSTEINt

Interesthas developed recently (l-3) in the significance of the free protoporphyrin which van den Bergh and Hyman (4) reported in 1928 as being present in human erythrocytes. This “erythrocyte protoporphyrin” (EP) is identical with the protoporphyrin which, in combination with iron and globin, forms hemoglobin (1, 5). An increase in the quantity of free EP has been observed in immature erythroc...