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Al-Rasadi K, Al-Waili K, Al-Zidi WAM, Al-Abri AR, Al-Hinai AT, Al-Sabti HA, Al-Tobi S, Al-Zakwani I, Al-Zadjali F, Al-Hashmi K, Banerjee Y. Low-density lipoprotein receptor gene mutation analysis and structure-function correlation in an Omani arab family with familial hypercholesterolemia. Angiology 2013; 65:911-8. [PMID: 24249837 DOI: 10.1177/0003319713510059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Familial hypercholesterolemia (FH) is an autosomal dominant disorder typified by elevated low-density lipoprotein cholesterol (LDL-C) levels caused by mutations in the LDL receptor (LDLR), apolipoprotein B (ApoB), or proprotein convertase subtilisin/kexin type 9 (PCSK9) genes. Previously, we reported a novel mutation in the exon-3 of LDLR gene, observed in a 9-year-old Omani Arab female. Here, we investigated the mode of inheritance of this mutation and confirmed that FH in this family is due to mutation only in the LDLR and not PCSK9 and ApoB genes. Further, the effect of the mutation has been appraised in silico on the tertiary structure of LDLR. A model of the mutant LDLR has been constructed using the coordinates of the wild-type LDLR extracellular domain. Based on the model, we present a mechanistic justification behind the observed detrimental effect of the mutation on LDL-C levels.
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Affiliation(s)
- Khalid Al-Rasadi
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman Familial Hypercholesterolemia Study Group, Oman Society of Lipid and Atherosclerosis (OSLA), Sultan Qaboos University, Muscat, Oman
| | - Khalid Al-Waili
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman Familial Hypercholesterolemia Study Group, Oman Society of Lipid and Atherosclerosis (OSLA), Sultan Qaboos University, Muscat, Oman
| | - Ward Al-Muna Al-Zidi
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Abdul Rahim Al-Abri
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman Familial Hypercholesterolemia Study Group, Oman Society of Lipid and Atherosclerosis (OSLA), Sultan Qaboos University, Muscat, Oman
| | - Ali T Al-Hinai
- Department of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Hilal Ali Al-Sabti
- Department of Surgery, Cardiothoracic Surgery Division, Sultan Qaboos University Hospital, Muscat, Oman
| | - Sheikha Al-Tobi
- Department of Clinical Biochemistry, Medical Laboratory Science program, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Ibrahim Al-Zakwani
- Department of Pharmacology & Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Fahad Al-Zadjali
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Khamis Al-Hashmi
- Department of Physiology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman
| | - Yajnavalka Banerjee
- Department of Clinical Biochemistry, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman Familial Hypercholesterolemia Study Group, Oman Society of Lipid and Atherosclerosis (OSLA), Sultan Qaboos University, Muscat, Oman
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Carneiro MM, Miname MH, Gagliardi AC, Pereira C, Pereira AC, Krieger JE, Maranhão RC, Santos RD. The removal from plasma of chylomicrons and remnants is reduced in heterozygous familial hypercholesterolemia subjects with identified LDL receptor mutations: Study with artificial emulsions. Atherosclerosis 2012; 221:268-74. [DOI: 10.1016/j.atherosclerosis.2011.12.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 12/20/2011] [Accepted: 12/21/2011] [Indexed: 10/14/2022]
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Soška V, Jarkovský J, Ravčuková B, Tichý L, Fajkusová L, Freiberger T. The logarithm of the triglyceride/HDL-cholesterol ratio is related to the history of cardiovascular disease in patients with familial hypercholesterolemia. Clin Biochem 2012; 45:96-100. [DOI: 10.1016/j.clinbiochem.2011.11.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Revised: 11/02/2011] [Accepted: 11/08/2011] [Indexed: 10/15/2022]
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