1
|
de Beer R, Outhoff K, Phulukdaree A, Soma P. Prevalence of SLCO1B1 single nucleotide variations and their association with hypercholesterolaemia in hypercholesterolemic patients in Gauteng, South Africa. Xenobiotica 2021; 51:949-959. [PMID: 34154510 DOI: 10.1080/00498254.2021.1945165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Statins, the standard treatment for hypercholesterolaemia, among the most widely prescribed, have been associated with side effects, including statin intolerance. The aim of this study was to determine the background prevalence of SLCO1B1 SNVs in a randomly selected sample and to investigate if there are associations between SLCO1B1 SNVs and hypercholesterolaemia patients on statin therapy.Using Polymerase Chain Reaction - Restriction Fragment Length Polymorphism, the presence of SLCO1B1 SNVs (rs4149056, rs2306283 and rs4363657) was identified, while ELISA was used to quantify serum CK levels. Statin intolerance risk was calculated using a quantitative questionnaire.The risk of developing statin intolerance was found to be low (in 36%), moderate (in 49%), or high (in 15%) in the statin-treated group. The prevalence of the rs4149056 variant was 16% in (controls) and 20% in (statin) group; rs2306283 variant was present in 31.5% (controls), 10.5% in (statin) group; while the prevalence of the rs4363657 variant was similar in each. No association between the presence of any one of the SNVs and the statin intolerance severity risk score or CK elevation was found.These findings will facilitate a more personalized approach to statin therapy, especially relevant within the diverse South African population.
Collapse
Affiliation(s)
- Rene de Beer
- Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Kim Outhoff
- Department of Pharmacology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Alisa Phulukdaree
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Prashilla Soma
- Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| |
Collapse
|
2
|
Grapci AD, Dimovski AJ, Kapedanovska A, Vavlukis M, Eftimov A, Geshkovska NM, Labachevski N, Jakjovski K, Gorani D, Kedev S, Mladenovska K. Frequencies of single-nucleotide polymorphisms and haplotypes of the SLCO1B1 gene in selected populations of the western balkans. Balkan J Med Genet 2015; 18:5-21. [PMID: 26929901 PMCID: PMC4768821 DOI: 10.1515/bjmg-2015-0001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
As a membrane influx transporter, organic anion-transporting polypeptide 1B1 (OATP1B1) regulates the cellular uptake of a number of endogenous compounds and drugs. The aim of this study was to characterize the diversity of the solute carrier organic anion transporter family member 1B1 (SLCO1B1) gene encoding this transporter in two ethnic groups populating the Western Balkans. The distribution of SCLO1B1 alleles was determined at seven variant sites (c.388A>G, c.521T>C, c.571T>C, c.597C>T, c.1086C>T, c.1463G>C and c.*439T>G) in 266 Macedonians and 94 Albanians using the TaqMan allelic discrimination assay. No significant difference in the frequencies of the single nucleotide polymorphisms (SNPs) was observed between these populations. The frequency of the c.521T>C SNP was the lowest (<13.7 and 12.2%, respectively), while the frequencies of all other SNP alleles were above 40.0%. Variant alleles of c.1463G>C and c.1086 C>T SNPs were not identified in either ethnic group. The haplotype analysis revealed 20 and 21 different haplotypes in the Macedonian and Albanian population, respectively. The most common haplotype in both ethnic groups, *1J/*1K/*1L, had a frequency of 39.0% and 26.6%, respectively. In both populations, the variant alleles of the functionally significant c.521T>C and c.388A>G SNPs existed in one major haplotype (*15/*16/*17), with a frequency of 8.6 and 2.4% in the Macedonian and Albanian subjects, respectively. In conclusion, sequence variations of the SLCO1B1 gene in the studied populations occur at high frequencies, which are similar to that of the Caucasian population. Further studies are needed to evaluate the clinical significance of these SNPs and/ or the major SLCO1B1 haplotypes they form for a large number of substrates and for susceptibility to certain diseases.
Collapse
Affiliation(s)
- A Daka Grapci
- Faculty of Medicine, University "Hasan Prishtina", Blv. "Mother Theresa" NN, 10 000 Prishtina, Republic of Kosovo
| | - A J Dimovski
- Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 47, 1000 Skopje, Republic of Macedonia
| | - A Kapedanovska
- Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 47, 1000 Skopje, Republic of Macedonia
| | - M Vavlukis
- University Clinic of Cardiology, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 17, 1000 Skopje, Republic of Macedonia
| | - A Eftimov
- Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 47, 1000 Skopje, Republic of Macedonia
| | - N Matevska Geshkovska
- Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 47, 1000 Skopje, Republic of Macedonia
| | - N Labachevski
- Faculty of Medicine, Institute of Preclinical and Clinical Pharmacology with Toxicology, University "Ss Cyril and Methodius" in Skopje, St. "50th Division" 6, 1000 Skopje, Republic of Macedonia
| | - K Jakjovski
- Faculty of Medicine, Institute of Preclinical and Clinical Pharmacology with Toxicology, University "Ss Cyril and Methodius" in Skopje, St. "50th Division" 6, 1000 Skopje, Republic of Macedonia
| | - D Gorani
- Clinic of Cardiology, University Clinical Center, University "Hasan Prishtina", Blv. "Mother Theresa" NN, 10 000, Prishtina, Republic of Kosovo
| | - S Kedev
- University Clinic of Cardiology, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 17, 1000 Skopje, Republic of Macedonia
| | - K Mladenovska
- Faculty of Pharmacy, Center for Biomolecular Pharmaceutical Analyses, University "Ss Cyril and Methodius" in Skopje, Blv. "Mother Theresa" 47, 1000 Skopje, Republic of Macedonia
| |
Collapse
|
3
|
Turner ST, Bailey KR, Schwartz GL, Chapman AB, Chai HS, Boerwinkle E. Genomic association analysis identifies multiple loci influencing antihypertensive response to an angiotensin II receptor blocker. Hypertension 2012; 59:1204-11. [PMID: 22566498 DOI: 10.1161/hyp.0b013e31825b30f8] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
To identify genes influencing blood pressure response to an angiotensin II receptor blocker, single nucleotide polymorphisms identified by genome-wide association analysis of the response to candesartan were validated by opposite direction associations with the response to a thiazide diuretic, hydrochlorothiazide. We sampled 198 white and 193 blacks with primary hypertension from opposite tertiles of the race-sex-specific distributions of age-adjusted diastolic blood pressure response to candesartan. There were 285 polymorphisms associated with the response to candesartan at P<10(-4) in whites. A total of 273 of the 285 polymorphisms, which were available for analysis in a separate sample of 196 whites, validated for opposite direction associations with the response to hydrochlorothiazide (Fisher χ(2) 1-sided P=0.02). Among the 273 polymorphisms, those in the chromosome 11q21 region were the most significantly associated with response to candesartan in whites (eg, rs11020821 near FUT4, P=8.98 × 10(-7)), had the strongest opposite direction associations with response to hydrochlorothiazide (eg, rs3758785 in GPR83, P=7.10 × 10(-3)), and had the same direction associations with response to candesartan in the 193 blacks (eg, rs16924603 near FUT4, P=1.52 × 10(-2)). Also notable among the 273 polymorphisms was rs11649420 on chromosome 16 in the amiloride-sensitive sodium channel subunit SCNN1G involved in mediating renal sodium reabsorption and maintaining blood pressure when the renin-angiotensin system is inhibited by candesartan. These results support the use of genomewide association analyses to identify novel genes predictive of opposite direction associations with blood pressure responses to inhibitors of the renin-angiotensin and renal sodium transport systems.
Collapse
Affiliation(s)
- Stephen T Turner
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, College of Medicine, Rochester, MN 55905, USA.
| | | | | | | | | | | |
Collapse
|