Title :

Carbamylation is a competitor of glycation for protein modification in vivo

Author(s) :

Nicolas, C [Auteur]
Université de Reims Champagne-Ardenne [URCA]
Jaisson, S [Auteur]
Université de Reims Champagne-Ardenne [URCA]
Gorisse, L [Auteur]
Université de Reims Champagne-Ardenne [URCA]
Tessier, Frederic [Auteur]
Lille Inflammation Research International Center (LIRIC) - U995
Niquet-Leridon, Celine [Auteur]
UniLaSalle
Jacolot, Philippe [Auteur]
UniLaSalle
Pietrement, Christine [Auteur]
Université de Reims Champagne-Ardenne [URCA]
Gillery, P [Auteur]
Université de Reims Champagne-Ardenne [URCA]

Journal title :

Diabetes & metabolism

Abbreviated title :

Diabetes Metab.

Volume number :

44

Pages :

160-167

Publication date :

2018-03

ISSN :

1262-3636

Keyword(s) :

Chronic kidney disease
Carbamylation
HbA(lc)
Competition
Glycation
Diabetes mellitus

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

AIM: Chronic kidney disease (CKD) and diabetes mellitus are two diseases that accelerate protein molecular ageing through carbamylation and glycation reactions, characterized by the binding of urea-derived isocyanic acid ...
Show more >AIM: Chronic kidney disease (CKD) and diabetes mellitus are two diseases that accelerate protein molecular ageing through carbamylation and glycation reactions, characterized by the binding of urea-derived isocyanic acid and of sugars on proteins, respectively. These two reactions target the same protein amino groups and, thus, compete with each other. Such competition may arise especially in diabetic patients with nephropathy. This study aimed to evaluate their potential competitive effects in vitro and under conditions reproducing CKD and/or diabetes in vivo. METHODS: Albumin was incubated in vitro with glucose, urea or cyanate. Carbamylation in vivo was enhanced in normal and diabetic (db/db) mice by either subtotal nephrectomy or cyanate consumption. Homocitrulline, carbamylated haemoglobin and furosine were measured by LC-MS/MS, fructosamine by colorimetric assay and HbA1c by immunological assay. RESULTS: Reciprocal inhibition between carbamylation and glycation was observed during albumin incubations in vitro. Besides, 5 weeks after induction of CKD in vivo, plasma homocitrulline concentrations were similar in both diabetic and non-diabetic mice, whereas fructosamine and HbA1c were decreased (-23% and -42%, respectively) in diabetic mice with CKD compared with only diabetic ones. Fructosamine and HbA1c were also decreased in cyanate-spiked water-drinking mice compared with plain water-drinking diabetic mice. CONCLUSION: Carbamylation competes with glycation in vivo, especially under conditions of high glycation. Thus, the classic markers of glycaemic control should be interpreted with caution in diabetic patients with CKD because of this competitive effect.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Inserm
Université de Lille
CHU Lille

Collections :

• Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286

Research team(s) :

Glycation from inflammation to aging

Submission date :

2019-03-01T14:35:08Z
2019-09-24T07:42:49Z
2024-03-05T09:34:01Z