1. Plasma lipoprotein subfraction concentrations are associated with lipid metabolism and age-related macular degeneration[S]
- Author
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Alfred Tau Liang Gan, Qiao Fan, Ian Yeo, Rajendra S. Apte, Tien Yin Wong, Chiea Chuen Khor, E. Shyong Tai, Ranjana Mathur, Miao Ling Chee, Ching-Yu Cheng, and Chui Ming Gemmy Cheung
- Subjects
0301 basic medicine ,Male ,medicine.medical_specialty ,Very low-density lipoprotein ,genetic structures ,Lipoproteins ,QD415-436 ,Biochemistry ,Pathogenesis ,03 medical and health sciences ,chemistry.chemical_compound ,Macular Degeneration ,0302 clinical medicine ,Endocrinology ,High-density lipoprotein ,Internal medicine ,Cholesterylester transfer protein ,medicine ,Humans ,genetics ,Research Articles ,Aged ,Polymorphism, Genetic ,biology ,business.industry ,Lipid metabolism ,Cell Biology ,Macular degeneration ,medicine.disease ,eye diseases ,Cholesterol Ester Transfer Proteins ,030104 developmental biology ,Phenotype ,chemistry ,high density lipoprotein ,cholesterylester transfer protein ,Case-Control Studies ,030221 ophthalmology & optometry ,biology.protein ,lipids (amino acids, peptides, and proteins) ,Female ,sense organs ,business ,Lipoprotein ,Chylomicron - Abstract
Disturbance in lipid metabolism has been suggested as a major pathogenic factor for age-related macular degeneration (AMD). Conventional lipid measures have been inconsistently associated with AMD. Other factors that can alter lipid metabolism include lipoprotein phenotype and genetic mutations. We performed a case-control study to examine the association between lipoprotein profile and neovascular AMD (nAMD) and whether the cholesterylester transfer protein (CETP) D442G mutation modulates these associations. Patients with nAMD had significantly higher concentrations of HDL and IDL compared with controls. The increase in HDL particles in nAMD patients was driven by an excess of medium-sized particles. Concurrently, patients with nAMD also had lower Apo A-1, lower VLDL and chylomicron lipoprotein. Many of these associations showed a dose-dependent association between controls, early AMD cases, and nAMD cases. Adjustment for the presence of the D442G mutation at the CETP locus did not significantly alter the increased AMD risk associated with HDL particle concentration. AMD is associated with variation in many lipoprotein subclasses, including increased HDL and IDL particles and decreased Apo A-1, VLDL, and chylomicron particles. These data suggest widespread systemic disturbance in lipid metabolism in the pathogenesis of AMD, including possible alterations in lipoprotein carrier capacity.
- Published
- 2017