Origin of Glycosylated Hemoglobin Al in Chronic Renal Failure
In chronic renal failure both HbAI and HbAlc levels have been reported to be elevated. In order to investigate the causes of such increase we measured HbAI (cation-exchange chromatography), blood urea nitrogen, arterial blood pH, plasma bicarbonate, phosphatemia, serum iron and serum ferritin before dialysis in 60 uremic patients receiving long term hemodialysis. The increased levels of HbAI do not correlate with glucose intolerance, phosphatemia, blood urea nitrogen, time averaged concentration of urea, serum iron and serum ferritin. On the contrary the presence of a highly significant correlation between HbAI and arterial blood pH (p < 0.001) and between HbAI and plasma bicarbonate (p < 0.001) seems to emphasize a major role for acidosis in increasing the HbAI levels in uremic patients on long term hemodialysis.