Details

Autor(en) / Beteiligte

• Radhakutty, A.
• Shen, J.
• Hooper, A. J.
• Miller, S. A.
• Burnett, J. R.
• Mah, P. M.
• Burt, M. G.
• Doogue, M. P.

Titel

Quantification and genotyping of lipoprotein lipase in patients with diabetic lipaemia

Ist Teil von

• Diabetic medicine, 2014-12, Vol.31 (12), p.1702-1707

Ort / Verlag

Oxford: Blackwell Publishing Ltd

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• Aims To determine if diabetic lipaemia is caused by loss of function mutations in the lipoprotein lipase gene, LPL. Methods We conducted a case–control study over 2 years in two tertiary care hospitals in South Australia. Six patients with a history of diabetic lipaemia and 12 control subjects, with previous diabetic ketoacidosis and peak triglyceride concentrations < 2.4 mmol/l were included. Participants were well at the time of study investigations. Results Only one patient with lipaemia had a loss of function mutation in LPL and no functional mutations in APOC2 or GPIHBP1 were identified. The mean lipoprotein lipase concentration was lower in patients with diabetic lipaemia than in control subjects (306 vs 484 μg/l, P = 0.04). The mean fasting C‐peptide concentration was higher in patients with diabetic lipaemia than in control subjects (771 vs 50 pmol/l; P = 0.001). Conclusions Lipoprotein lipase deficiency in patients with a history of diabetic lipaemia was predominantly quantitative, rather than secondary to mutations in LPL, APOC2 or GPIHBP1. The majority of patients with severe hypertriglyceridaemia in diabetic ketoacidosis may have ketosis‐prone Type 2, rather than Type 1, diabetes. What's new? This is the first study to quantify and genotype lipoprotein lipase in patients with diabetic lipaemia. In contrast to published case reports, the majority of patients with diabetic lipaemia did not have an underlying genetic abnormality in the LPL or APOC2 genes. The majority of patients with severe hypertriglyceridaemia in diabetic ketoacidosis had ketosis‐prone Type 2, rather than Type 1, diabetes. Lipoprotein lipase deficiency may predispose patients with Type 2 diabetes to developing diabetic ketoacidosis.