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Articles by Jiri Frohlich
Total Records ( 3 ) for Jiri Frohlich
  Ahmad Al-Sarraf , Khalid Al-Ghofaili , David R. Sullivan , Kishor M. Wasan , Robert Hegele and Jiri Frohlich
  Complete apo A1 deficiency is a rare genetic disorder that has been associated with premature atherosclerosis. We describe a family of Iraqi Mandaean background with complete apo A1 deficiency caused by a new nonsense mutation in the APOA1 gene. Interestingly, there were marked differences in the clinical presentation of the two homozygotes in this family. A 35-year-old woman presented with xanthelasmas and xanthomas but showed only minimal changes on cardiovascular examinations and no clinical symptoms. However, her 37-year-old brother was diagnosed with myocardial infarction at age 35. In addition, both the homozygotes had elevated C-reactive protein levels. The C-reactive protein levels increased three-fold during pregnancy, then decreased postpartum and further decreased with statin treatment. Cholesterol ester transfer protein mass was close to the upper reference range, whereas the activity was low, likely because of the lack of the substrate. Here, we characterize the phenotype and genotype of the first Middle Eastern family with apo A1 deficiency and compare and contrast the findings in the two homozygous siblings and review the previously reported cases of apo A1 deficiency.
  Susan M. Dimick , Brigitte Sallee , Bela F. Asztalos , P. Haydn Pritchard , Jiri Frohlich and Ernst J. Schaefer
  A kindred affected with fish eye disease (FED) from Oklahoma is reported. Two probands with corneal opacification had mean levels of high-density lipoprotein (HDL) cholesterol (C), apolipoprotein (apo) A-I, and apoA-I in very large alpha-1 HDL particles that were 9%, 17%, and 5% of normal, whereas their parents and 1 sibling had values that were 61%, 77%, and 72% of normal. The probands had no detectable lipoprotein-X, and had mean low-density lipoprotein cholesterol (LDL-C) and triglyceride levels that were elevated. Their mean lecithin cholesterol acyltransferase (LCAT) activities, cholesterol esterification rates, and free cholesterol levels were 8%, 42%, and 258% of normal, whereas their parents and 1 sibling had values that were 55%, 49%, and 114% of normal. The defect was due to 1 common variant in the LCAT gene in exon 1: c101t causing a proline34leucine substitution and a novel mutation c1177t causing a threonine37methionine substitution, with the former variant being found in the father and 1 sibling, and the latter mutation being found in the mother, and both mutations being present in the 2 probands. FED is distinguished from familial LCAT deficiency (FLD) by the lack of anemia, splenomegaly, and renal insufficiency as well as normal or increased LDL-C. Both FLD and FED cases have marked HDL deficiency and corneal opacification, and FED cases may have premature coronary heart disease in contrast to FLD cases. Therapy, using presently available agents, in FED should be to optimize LDL-C levels, and 1 proband responded well to statin therapy. The investigational use of human recombinant LCAT as an enzyme source is ongoing.
  Min Li , Ramesh Saeedi , Simon W. Rabkin and Jiri Frohlich
  We describe a patient with markedly elevated lipoprotein(a) (Lp(a)) without any other lipid abnormalities. After a myocardial infarction, she was treated with combination of extended-release niacin and statin. An 88% reduction in Lp(a) was observed during 5 years of treatment, which is much better response than usually reported.
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