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Articles by Eliana Polisecki
Total Records ( 2 ) for Eliana Polisecki
  Raul D. Santos , Bela F. Asztalos , Lilton R.C. Martinez , Marcio H. Miname , Eliana Polisecki and Ernst J. Schaefer
  Our purpose is to provide a framework for diagnosing the inherited causes of marked high-density lipoprotein (HDL) deficiency (HDL cholesterol levels <10 mg/dL in the absence of severe hypertriglyceridemia or liver disease) and to provide information about coronary heart disease (CHD) risk for such cases. Published articles in the literature on severe HDL deficiencies were used as sources. If apolipoprotein (Apo) A-I is not present in plasma, then three forms of ApoA-I deficiency, all with premature CHD,and normal low-density lipoprotein (LDL) cholesterol levels have been described: ApoA-I/C-III/A-IV deficiency with fat malabsorption, ApoA-I/C-III deficiency with planar xanthomas, and ApoA-I deficiency with planar and tubero-eruptive xanthomas (pictured in this review for the first time). If ApoA-I is present in plasma at a concentration <10 mg/dL, with LDL cholesterol that is about 50% of normal and mild hypertriglyceridemia, a possible diagnosis is Tangier disease due to mutations at the adenosine triphosphate binding cassette protein A1 (ABCA1) gene locus. These patients may develop premature CHD and peripheral neuropathy, and have evidence of cholesteryl ester-laden macrophages in their liver, spleen, tonsils, and Schwann cells, as well as other tissues. The third form of severe HDL deficiency is characterized by plasma ApoA-I levels <40 mg/dL, moderate hypertriglyceridemia, and decreased LDL cholesterol, and the finding that most of the cholesterol in plasma is in the free rather than the esterified form, due to a deficiency in lecithin:cholesterol acyltransferase activity. These patients have marked corneal opacification and splenomegaly, and are at increased risk of developing renal failure, but have no clear evidence of premature CHD. Marked HDL deficiency has different etiologies and is generally associated with early CHD risk.
  Smita I. Negi , Ariel Brautbar , Salim S. Virani , Aashish Anand , Eliana Polisecki , Bela F. Asztalos , Christie M. Ballantyne , Ernst J. Schaefer and Peter H. Jones
  Tangier disease is a rare autosomal-recessive disorder caused by mutation in the ATP binding cassette transporter 1 (ABCA1) gene. Typically, Tangier disease manifests with symptoms and signs resulting from the deposition of cholesteryl esters in nonadipose tissues; chiefly, in peripheral nerves leading to neuropathy and in reticulo-endothelial organs, such as liver, spleen, lymph nodes, and tonsils, causing their enlargement and discoloration. An association with early cardiovascular disease can be variable. We describe a patient with a unique phenotype of Tangier disease from a novel splice site mutation in the ABCA1 gene that is associated with a central nervous system presentation resembling multiple sclerosis, and the presence of premature atherosclerosis.
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