Elevated baseline plasma phospholipid protein (PLTP) levels are an independent predictor of long-term all-cause mortality in patients with diabetes mellitus and known or suspected coronary artery disease
ATHEROSCLEROSIS
Authors: Cavusoglu, Erdal; Marmur, Jonathan D.; Chhabra, Sandeep; Hojjati, Mohammad R.; Yanamadala, Sunitha; Chopra, Vineet; Eng, Calvin; Jiang, Xian-Cheng
Abstract
Objectives: To investigate the long-term prognostic significance of baseline plasma PLTP levels in a group of well-characterized male patients with diabetes mellitus and known or suspected coronary artery disease referred for coronary angiography. Background: PLTP is a plasma protein that mediates the net transfer and exchange of phospholipids between lipoproteins. It has been implicated in the pathogenesis of atherosclerosis and elevated plasma levels have been reported in patients with diabetes mellitus. Methods: Baseline plasma PLTP levels were measured in 154 male patients with diabetes mellitus who were referred for coronary angiography and followed prospectively for 5 years for the development of all-cause mortality. Results: After adjustment for a variety of baseline clinical, angiographic and laboratory parameters, plasma PLTP levels (analyzed as a continuous variable) were an independent predictor of all-cause mortality at 5 years (HR, 1.55; 95% CI, 1.22-2.00; P = 0.0009). Furthermore, in 3 additional multivariate models that also included a wide variety of contemporary biomarkers with established prognostic efficacy (i.e., ST2, GDF-15, Cystatin C, Fibrinogen, and NT-proBNP), PLTP remained an independent predictor of all-cause mortality at 5 years. Conclusions: Elevated baseline plasma levels of PLTP are associated with an increased risk of long-term all-cause mortality in patients with diabetes and known or suspected coronary disease. Furthermore, this association is independent of a variety of clinical, angiographic, and laboratory variables, including a whole host of contemporary biomarkers with established prognostic efficacy. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
Expression of intercellular lipid transport and cholesterol metabolism genes in eggs and early larvae stages of turbot, Scophthalmus maximus, a marine aquaculture species
MARINE BIOLOGY
Authors: Cunha, I.; Galante-Oliveira, S.; Rocha, E.; Urbatzka, R.; Castro, L. F. C.
Abstract
Growth and energy transfer are critically dependent on effective transport of lipid molecules between tissues and cellular compartments. This process is specific in egg and eleutheroembryos, when energetic and structural lipids, located at the yolk sac, need to be mobilized in order to be incorporated in the new forming embryo, or to produce energy. Here, we describe the transcriptional profile of 11 genes that codify for proteins involved in intercellular lipid transport and cholesterol metabolism during the early development of a marine teleost fish (Scophthalmus maximus), from notochord formation to the period beyond mouth opening. The mRNA expression pattern of genes (apoA1, apoB100, apoE, cetp, mtp, pltp, lipC, lpl, hmgcr1, soat1, lcat) is described and related to previously published lipid levels in larvae and PPARs-peroxisome proliferator-activated receptors-mRNA levels from the same experiment (Cunha et al. in Mar Genomics 10:17-25, 2013). Our findings show that the transcription of genes responsible for apolipoproteins production starts soon before hatching and that activities decline along the development. In contrast, genes responsible for cholesterol synthesis have a low transcription level early in the development and their activity increases later. Apolipoproteins and other genes related to reverse cholesterol transport are possibly under the control of Ppar alpha 2, while the expression of extracellular lipid transfer proteins and enzymes involved in cholesterol synthesis is possibly under the simultaneous control of Ppar alpha 1 and Ppar gamma. Generally, the observed transcription of genes involved in lipid transport is in accordance with the lipid composition of the larvae and transcription of master regulators of lipid metabolism such as the nuclear receptors-PPARs.