PMID- 25933703 OWN - NLM STAT- MEDLINE DCOM- 20160301 LR - 20171116 IS - 1096-0309 (Electronic) IS - 0003-2697 (Linking) VI - 482 DP - 2015 Aug 1 TI - Fluorimetric screening assay for protein carbonyl evaluation in biological samples. PG - 55-61 LID - S0003-2697(15)00198-0 [pii] LID - 10.1016/j.ab.2015.04.021 [doi] AB - Many assays are available for the detection of protein carbonyls (PCs). Currently, the measurement of PC groups after their derivatization with 2,4-dinitrophenol hydrazine (DNPH) is widely used for measuring protein oxidation in biological samples. However, this method includes several washing steps. In this context, we have developed a rapid, sensitive, and accurate fluorimetric method adapted to 96-well microplates for the convenient assessment of protein carbonyl level in biological samples. The method reported here is based on the reaction of carbonyl content in proteins with 7-hydrazino-4-nitrobenzo-2,1,3-oxadiazole (NBDH) to form highly fluorescent derivatives via hydrazone formation. PCs were determined using the DNPH and NBDH assays in fully reduced bovine serum albumin (BSA) and plasma and liver homogenates obtained from healthy control rats up the addition of various amounts of HOCl-oxidized BSA (OxBSA). Using the NBDH assay, PC concentrations as low as 0.2 nmol/mg were detected with precision as low as 5%. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectroscopy was used to successfully identify the formation of the NBDH adducts after derivatization with standard oxidized peptides. Finally, the two methods were further used for PC determination in plasma and liver samples from diabetic and normal rats, showing that the NBDH assay can be reliably used in biological experiments. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Stocker, P AU - Stocker P AD - Aix Marseille Universite, CNRS, UMR 7273, ICR-SMBSO, 13397 Marseille Cedex 20, France. Electronic address: p.stocker@univ-amu.fr. FAU - Ricquebourg, E AU - Ricquebourg E AD - Aix Marseille Universite, CNRS, UMR 7273, ICR-SMBSO, 13397 Marseille Cedex 20, France. FAU - Vidal, N AU - Vidal N AD - Aix Marseille Universite, CNRS, UMR 7273, ICR-SMBSO, 13397 Marseille Cedex 20, France; SARL YELEN, 13820 Ensues la Redonne, France. FAU - Villard, C AU - Villard C AD - Centre de Recherches en Encologie Biologique et Onco-Pharmacologie (CRO2), Aix-Marseille Universite, Institut National de la Sante et de la Recherche Medicale (INSERM), 13385 Marseille, France. FAU - Lafitte, D AU - Lafitte D AD - Centre de Recherches en Encologie Biologique et Onco-Pharmacologie (CRO2), Aix-Marseille Universite, Institut National de la Sante et de la Recherche Medicale (INSERM), 13385 Marseille, France. FAU - Sellami, L AU - Sellami L AD - Centre de Recherches en Encologie Biologique et Onco-Pharmacologie (CRO2), Aix-Marseille Universite, Institut National de la Sante et de la Recherche Medicale (INSERM), 13385 Marseille, France. FAU - Pietri, S AU - Pietri S AD - Aix Marseille Universite, CNRS, UMR 7273, ICR-SMBSO, 13397 Marseille Cedex 20, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150428 PL - United States TA - Anal Biochem JT - Analytical biochemistry JID - 0370535 RN - 0 (7-nitrobenzoxadiazole) RN - 0 (Blood Proteins) RN - 0 (Dinitrophenols) RN - 0 (Hydrazines) RN - 0 (Oxadiazoles) RN - 27432CM55Q (Serum Albumin, Bovine) SB - IM MH - Amino Acid Sequence MH - Animals MH - Blood Proteins/chemistry/*metabolism MH - Cattle MH - Diabetes Mellitus, Experimental/metabolism MH - Dinitrophenols/chemistry MH - Fluorometry/*methods MH - Hydrazines/chemistry MH - Liver/chemistry/*metabolism MH - Oxadiazoles/chemistry MH - Oxidation-Reduction MH - *Protein Carbonylation MH - Rats MH - Serum Albumin, Bovine/chemistry MH - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods OTO - NOTNLM OT - Fluorescence OT - MALDI-TOF OT - NBDH OT - Oxidized BSA OT - Protein carbonyls EDAT- 2015/05/03 06:00 MHDA- 2016/03/02 06:00 CRDT- 2015/05/03 06:00 PHST- 2015/02/05 00:00 [received] PHST- 2015/04/20 00:00 [revised] PHST- 2015/04/22 00:00 [accepted] PHST- 2015/05/03 06:00 [entrez] PHST- 2015/05/03 06:00 [pubmed] PHST- 2016/03/02 06:00 [medline] AID - S0003-2697(15)00198-0 [pii] AID - 10.1016/j.ab.2015.04.021 [doi] PST - ppublish SO - Anal Biochem. 2015 Aug 1;482:55-61. doi: 10.1016/j.ab.2015.04.021. Epub 2015 Apr 28.