Radhakutty A, Shen J, Hooper AJ, Miller SA, Burnett JR, Mah PM, Burt MG, Doogue MP. Quantification and genotyping of lipoprotein lipase in patients with diabetic lipaemia.
Diabet Med 2014;
31:1702-7. [PMID:
25131724 DOI:
10.1111/dme.12565]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/24/2014] [Accepted: 06/11/2014] [Indexed: 01/24/2023]
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.
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