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Comparison of glycated albumin and hemoglobin A1c concentrations in diabetic subjects on peritoneal and hemodialysis. 2010

Barry I Freedman, and Rajeev N Shenoy, and Jonathan A Planer, and Kimberly D Clay, and Zak K Shihabi, and John M Burkart, and Cesar Y Cardona, and Lilian Andries, and Todd P Peacock, and Hernan Sabio, and Joyce R Byers, and Gregory B Russell, and Anthony J Bleyer
Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1053, USA. bfreedma@wfubmc.edu

BACKGROUND Relative to hemoglobin A(1c) (HbA(1c)), percentage of glycated albumin (GA%) more accurately reflects recent glycemic control in diabetic hemodialysis (HD) patients. METHODS To determine the accuracy of glycemic assays in a larger sample including patients on peritoneal dialysis (PD), HbA(1c) and GA% were measured in 519 diabetic subjects: 55 on PD, 415 on HD, and 49 non-nephropathy controls. RESULTS Mean +/- SD serum glucose levels were higher in HD and PD patients relative to non-nephropathy controls (HD 169.7 +/- 62 mg/dL, PD 168.6 +/- 66 mg/dL, controls 146.1 +/- 66 mg/dL; p = 0.03 HD vs controls, p = 0.13 PD vs controls). GA% was also higher in HD and PD patients (HD 20.6% +/- 8.0%, PD 19.0% +/- 5.7%, controls 15.7% +/- 7.7%; p < 0.02 HD vs controls and PD vs controls). HbA(1c) was paradoxically lower in dialysis patients (HD 6.78% +/- 1.6%, PD 6.87% +/- 1.4%, controls 7.3% +/- 1.4%; p = 0.03 HD vs controls, p = 0.12 PD vs controls). The serum glucose/HbA(1c) ratio differed significantly between dialysis patients and controls (p < 0.0001 HD vs controls, p = 0.002 PD vs controls), while serum glucose/GA% ratio was similar across groups (p = 0.96 HD vs controls, p = 0.64 PD vs controls). In best-fit multivariate models with HbA(1c) or GA% as outcome variable, dialysis status was a significant predictor of HbA(1c) but not GA%. CONCLUSIONS The relationship between HbA(1c) and GA% differs in diabetic patients with end-stage renal disease who perform either PD or HD compared to those without nephropathy. HbA(1c) significantly underestimates glycemic control in peritoneal and hemodialysis patients relative to GA%.

UI MeSH Term Description Entries
D007676 Kidney Failure, Chronic The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION. ESRD,End-Stage Renal Disease,Renal Disease, End-Stage,Renal Failure, Chronic,Renal Failure, End-Stage,Chronic Kidney Failure,End-Stage Kidney Disease,Chronic Renal Failure,Disease, End-Stage Kidney,Disease, End-Stage Renal,End Stage Kidney Disease,End Stage Renal Disease,End-Stage Renal Failure,Kidney Disease, End-Stage,Renal Disease, End Stage,Renal Failure, End Stage
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010530 Peritoneal Dialysis Dialysis fluid being introduced into and removed from the peritoneal cavity as either a continuous or an intermittent procedure. Dialyses, Peritoneal,Dialysis, Peritoneal,Peritoneal Dialyses
D003920 Diabetes Mellitus A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.
D005260 Female Females
D006435 Renal Dialysis Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION. Dialysis, Extracorporeal,Dialysis, Renal,Extracorporeal Dialysis,Hemodialysis,Dialyses, Extracorporeal,Dialyses, Renal,Extracorporeal Dialyses,Hemodialyses,Renal Dialyses
D006442 Glycated Hemoglobin Products of non-enzymatic reactions between GLUCOSE and HEMOGLOBIN (occurring as a minor fraction of the hemoglobin of ERYTHROCYTES.) It generally refers to glycated HEMOGLOBIN A. Hemoglobin A1c (Hb A1c) is hemoglobin A with GLYCATION on a terminal VALINE of the beta chain. Glycated hemoglobin A is used as an index of the average blood sugar level over a lifetime of erythrocytes. Fructated Hemoglobins,Glycohemoglobin,Glycohemoglobin A,Glycohemoglobins,Glycosylated Hemoglobin A,Hb A1c,HbA1,Hemoglobin A(1),Hemoglobin A, Glycosylated,Glycated Hemoglobin A,Glycated Hemoglobin A1c,Glycated Hemoglobins,Glycosylated Hemoglobin A1c,Hb A1,Hb A1a+b,Hb A1a-1,Hb A1a-2,Hb A1b,Hemoglobin, Glycated A1a-2,Hemoglobin, Glycated A1b,Hemoglobin, Glycosylated,Hemoglobin, Glycosylated A1a-1,Hemoglobin, Glycosylated A1b,A1a-1 Hemoglobin, Glycosylated,A1a-2 Hemoglobin, Glycated,A1b Hemoglobin, Glycated,A1b Hemoglobin, Glycosylated,Glycated A1a-2 Hemoglobin,Glycated A1b Hemoglobin,Glycosylated A1a-1 Hemoglobin,Glycosylated A1b Hemoglobin,Glycosylated Hemoglobin,Hemoglobin A, Glycated,Hemoglobin A1c, Glycated,Hemoglobin A1c, Glycosylated,Hemoglobin, Glycated,Hemoglobin, Glycated A1a 2,Hemoglobin, Glycosylated A1a 1,Hemoglobins, Fructated,Hemoglobins, Glycated
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000093423 Glycated Serum Albumin Serum albumin that has undergone, in vivo, spontaneous, non-enzymatic modification with reducing sugars via the MAILLARD REACTION. They are analyzed to measure control of HYPERGLYCEMIA. Glycated Albumin, Serum,Glycoalbumin,Glycosyl-Albumin,Glycosylated Serum Albumin,Serum Albumin, Glycosylated,Albumin, Glycated Serum,Albumin, Glycosylated Serum,Albumin, Serum Glycated,Glycosyl Albumin,Serum Albumin, Glycated,Serum Glycated Albumin

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