Serum concentration of full-length- and carboxy-terminal fragments of endothelial lipase predicts future cardiovascular risks in patients with coronary artery disease

Detailed analysis of lipolytic enzymes in a Japanese woman of familial lipoprotein lipase deficiency - Effects of pemafibrate treatment

BACKGROUND

We present here a 72-y-old Japanese woman with lipoprotein lipase (LPL) deficiency and analyzed her lipolytic enzymes in detail before and after pemafibrate treatment.

METHODS

She had a serum triglycerides (TG) of 22.6 mmol/l at a medical checkup at the age of 52 y. She was referred to our hospital at the age of 61 y. Her serum lipoprotein lipase (LPL) concentration was extremely low, suggesting the clinical diagnosis of LPL deficiency. She experienced an event of acute pancreatitis at the age of 65 y.

RESULTS

Next-generation sequencing analysis revealed a homozygous nonsense mutation in the LPL gene, c.1277G > A (p.Trp409Ter). Her serum TG, LPL and hepatic lipase (HL) concentrations were 15.0 mmol/l, 23 ng/ml and 66 ng/ml, respectively. Fifteen minutes after intravenous heparin injection (30 U/kg), her serum TG, LPL and HL concentrations turned to 14.1 mmol/l, 20 ng/ml and 660 ng/ml, respectively. Eight weeks of pemafibrate treatment (0.2 mg/day) caused a modest reductions in serum TG (15.02 → 13.58 mmol/l) and considerable increases in preheparin HL (66 → 76 ng/ml) and PHP-HL (660 → 1118 ng/ml) concentrations and PHP-HL activities (253 → 369U/l) despite almost no effect on LPL concentrations and activities.

CONCLUSIONS

These findings suggest that HL may contribute to the reduction of plasma TG in LPL deficiency.

Gene polymorphism associated with angiotensinogen (M235T), endothelial lipase (584C/T) and susceptibility to coronary artery disease: a meta-analysis

OBJECTIVE

To explore the association between the variant M235T locus of angiotensinogen (AGT) gene, 584C/T locus of Endothelial lipase (EL) gene, and coronary artery disease (CAD) by meta-analysis.

METHODS

The case-control studies on the association between AGT/EL gene polymorphism and CAD were collected through searching PubMed, Excerpta Medica Database (EMBASE), Web of Science, China National Knowledge Infrastructure (CNKI), and Wanfang databases up to 1 March 2020. Stata 15.0 software was used for analysis.

RESULTS

A total of 29 articles met the inclusion criteria. After analyzing, it was found that the M235T polymorphism of AGT gene was associated with the occurrence of CAD. In the allele model (T vs. M), OR = 1.38 (P<v0.05). In other heredity, there was also statistical significance. Subgroup analysis indicated that except the heterozygous genetic model of the Chinese population, other genetic models of the Caucasian and Chinese population were also statistically significant. The 584C/T polymorphism of EL gene was associated with the occurrence of CAD, with OR = 0.83 (P<0.05) in the allele model (T vs. C) and OR = 0.80 (P<0.05) in the dominant gene model. Also, in the allele model of Caucasian subgroup, OR = 0.83 (P<0.05), while in Asian subgroup, there was no statistically significant genetic model.

CONCLUSION

AGT M235T and EL 584C/T polymorphisms are associated with CAD susceptibility. The genotype TT, TC or allele T of AGT M235T and genotype CC or allele C of EL 584C/T might be the genetic risk factors for the development of CAD.