Quantification and genotyping of lipoprotein lipase in patients with diabetic lipaemia

Anjana Radhakutty, Jimmy Shen, Amanda Hooper, Sharon Miller, John Burnett, Peak Mah, Morton Burt, Matthew Doogue

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)1702-1707
    Number of pages6
    JournalDiabetic Medicine
    Volume31
    Issue number12
    DOIs
    Publication statusPublished - 1 Dec 2014

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