Literature DB >> 1137920

New Colorimetric reaction for end-point, continuous-flow, and kinetic measurement of urea.

D Jung, H Biggs, J Erikson, P U Ledyard.   

Abstract

A reaction of urea, o-phthalaldehyde and N-(1-naphthyl)ethylenediamine is described for measurement of urea by manual, continuous-flow, and kinetic methods. The continuous-flow system requires 25 mu-l of sample; 40 samples can be analyzed per hour. The kinetic method requires no enzymes, has no lag phase, and has good sensitivity. A major advantage of the reaction is that it occurs at a temperature of 37 degrees C or lower. The results obtained by all three methods agree well with those for a continuous-flow procedure in which diacetyl is a reagent.

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Year:  1975        PMID: 1137920

Source DB:  PubMed          Journal:  Clin Chem        ISSN: 0009-9147            Impact factor:   8.327


  23 in total

1.  Self-Registration Methods for Increasing Membrane Utilization within Compression-Sealed Microchannel Hemodialysers.

Authors:  Brian K Paul; Spencer D Porter
Journal:  J Manuf Process       Date:  2014-10       Impact factor: 5.010

2.  Biochemical effects of energy drinks alone or in combination with alcohol in normal albino rats.

Authors:  Emmanuel Ugwuja
Journal:  Adv Pharm Bull       Date:  2013-12-23

3.  Pharmacokinetics of theophylline and its metabolites in a patient undergoing continuous ambulatory peritoneal dialysis.

Authors:  T B Vree; M Martea; R G Tiggeler; Y A Hekster; J C Hafkenscheid
Journal:  Clin Pharmacokinet       Date:  1988-12       Impact factor: 6.447

4.  Arginine homeostasis in J774.1 macrophages in the context of Mycobacterium bovis BCG infection.

Authors:  Meliza T Talaue; Vishwanath Venketaraman; Manzour Hernando Hazbón; Marcy Peteroy-Kelly; Anjali Seth; Roberto Colangeli; David Alland; Nancy D Connell
Journal:  J Bacteriol       Date:  2006-07       Impact factor: 3.490

5.  Physiological acclimation of a desert antelope, Arabian oryx (Oryx leucoryx), to long-term food and water restriction.

Authors:  Stéphane Ostrowski; Joseph B Williams; Pascal Mésochina; Helga Sauerwein
Journal:  J Comp Physiol B       Date:  2005-11-09       Impact factor: 2.200

6.  Influence of feeding direct-fed microbial supplementation on growth performance and feeding behavior in naturally fed and conventionally fed finishing cattle with different dietary adaptation periods.

Authors:  Kendall C Swanson; James J Gaspers; Faithe A Keomanivong; Trent C Gilbery; Gregory P Lardy; Marc L Bauer; Gerald L Stokka
Journal:  J Anim Sci       Date:  2018-07-28       Impact factor: 3.159

7.  Discovery and Pharmacokinetics of Sulfamides and Guanidines as Potent Human Arginase 1 Inhibitors.

Authors:  Roman Blaszczyk; Joanna Brzezinska; Barbara Dymek; Paulina S Stanczak; Marcin Mazurkiewicz; Jacek Olczak; Julita Nowicka; Karolina Dzwonek; Agnieszka Zagozdzon; Jakub Golab; Adam Golebiowski
Journal:  ACS Med Chem Lett       Date:  2020-03-13       Impact factor: 4.345

8.  Methylamine clearance by haemodialysis is low.

Authors:  Manish P Ponda; Zhe Quan; Michal L Melamed; Amanda Raff; Timothy W Meyer; Thomas H Hostetter
Journal:  Nephrol Dial Transplant       Date:  2009-12-17       Impact factor: 5.992

9.  Quantitative determination of urea concentrations in cell culture medium.

Authors:  Robert J X Zawada; Peggy Kwan; Kellen L Olszewski; Manuel Llinas; Shu-Gui Huang
Journal:  Biochem Cell Biol       Date:  2009-06       Impact factor: 3.626

10.  Coronary microvascular dysfunction in the setting of chronic ischemia is independent of arginase activity.

Authors:  Neel R Sodha; Munir Boodhwani; Richard T Clements; Jun Feng; Shu Hua Xu; Frank W Sellke
Journal:  Microvasc Res       Date:  2007-08-16       Impact factor: 3.514

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