Abstract:
OBJECTIVE:Several antiepileptic drugs (AEDs) are known to target the GABA(A) receptor through positive allosteric modulation of the receptors, thereby enhancing GABA(A) receptor-mediated inhibition. The large diversity of GABA(A) receptors has been reported in the central nervous system; some of these have been implicated in epilepsy susceptibility and AED resistance, which we aimed to examine. MATERIALS AND METHODS:We investigated the association of single-nucleotide polymorphisms in GABA(A) receptor subunit subtype genes namely; rs2279020 (GABRA1), rs3219151 (GABRA6), rs2229944 (GABRB2), and rs211037 (GABRG2) with predisposition to epilepsy and AED resistance. This was assessed in three cohorts of ethnically matched South Indian ancestry: mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS) (prototype of AED-resistant epilepsy syndrome), juvenile myoclonic epilepsy (prototype of AED-responsive epilepsy syndrome), and nonepilepsy controls. RESULTS:A significant allelic (P=0.0006, odds ratio=1.6, 95% confidence interval=1.22-2.08) and genotypic (P=0.001) association of a synonymous variant in GABRG2, rs211037 (Asn196Asn) was observed with epilepsy irrespective of its phenotype, that is, MTLE-HS or juvenile myoclonic epilepsy. However, this association was not retained in epilepsy patients with a history of febrile seizures. The GABA(A) receptor subunit subtype genes were not found to have any association with AED resistance. In-silico analysis indicated that rs211037 plays a significant role in the transcriptional regulation and splicing regulation. CONCLUSION:We could substantiate that among the GABA(A) receptor subunit gene cluster polymorphisms, the GABRG2, rs211037 predisposes susceptibility to epilepsy, irrespective of its phenotype, but not to AED resistance.
journal_name
Pharmacogenet Genomicsjournal_title
Pharmacogenetics and genomicsauthors
Balan S,Sathyan S,Radha SK,Joseph V,Radhakrishnan K,Banerjee Mdoi
10.1097/FPC.0000000000000000subject
Has Abstractpub_date
2013-11-01 00:00:00pages
605-10issue
11eissn
1744-6872issn
1744-6880journal_volume
23pub_type
杂志文章abstract:OBJECTIVE:The prototypical atypical antipsychotic agent, clozapine, is more efficacious for refractory schizophrenia than the 'typical' antipsychotics, but the mechanism underlying this enhanced efficacy is still under investigation. Since 2002, at least 22 association studies have shown that the DTNBP1 can be associat...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,随机对照试验
doi:10.1097/FPC.0b013e32832b9cfc
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:Gene expression is regulated by trans-acting transcription factors and microRNAs (miRNAs) through interactions with their respective cis-regulatory elements. The effects that drugs induce result from complex interactions in pathways downstream from their primary targets. These interactions, from gene regulat...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000111
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:Niacin has been used for seven decades to modulate plasma lipids, but its mechanism of action is still unclear. We sought to determine whether variants in the niacin receptor gene, hydroxyl-carboxylic receptor 2 (HCAR2), are associated with lipid response to treatment. PARTICIPANTS AND METHODS:Coding variant...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,随机对照试验
doi:10.1097/FPC.0000000000000289
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVE:A genome-wide association study has identified several gene polymorphisms associated with loss of renal function. The effect of these variants on renal function in kidney transplant recipients receiving immunosuppressive treatment is unknown. MATERIALS AND METHODS:A cohort of 189 kidney transplant recipients...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000251
更新日期:2017-01-01 00:00:00
abstract::Vitamin D has potent anti-tumour properties. Calcitriol [1,25(OH)2D3], the hormonal derivative of vitamin D3, is an antiproliferative and prodifferentiation factor for several cell types, including human squamous cells of the head and neck. Several polymorphisms of the vitamin D receptor (VDR) gene have been described...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/01213011-200503000-00004
更新日期:2005-03-01 00:00:00
abstract::Clozapine is the drug of choice for treatment-resistant schizophrenia. However, its use is associated with variable clinical responses and serious adverse effects. Polymorphisms in genes encoding proteins involved in synaptic neurotransmission may account for such variability. Here, we studied independent and epistati...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000314
更新日期:2018-01-01 00:00:00
abstract::There is a considerable interindividual variation in L-thyroxine [3,5,3',5'-tetraiodo-l-thyronine (T4)] dose required for thyrotropin (thyroid-stimulating hormone) suppression in patients with differentiated thyroid cancer. To investigate whether uridine diphosphate-glucuronosyl transferase 1A1 (UGT1A1)-mediated T4 gl...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e3283448d19
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVE:Genetic polymorphisms are associated with lipid-lowering response to statins, but generalizeability to disease endpoints is unclear. The association between 82 common single nucleotide polymorphisms (SNPs) in six lipid-related or statin-related genes (ABCB1, CETP, HMGCR, LDLR, LIPC, NOS3) and incident nonfata...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e3283033528
更新日期:2008-08-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that the two nonsynonymous single nucleotide polymorphisms at the CB2 cannabinoid receptor gene may have functional consequences on human CB2. METHODS:Q63R, H316Y, and Q63R/H316 mutations were made in recombinant human CB2 by the method of site-directed mutagenesis. After these mutant ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e3283367c6b
更新日期:2010-03-01 00:00:00
abstract::In humans, UDP-glucuronosyltransferase 1A9 is known to glucuronidate numerous lipophilic substances of pharmacological and toxicological importance. Although it has been established that individuals vary in their capacity to express this detoxification enzyme, little is known about the mechanisms that dictate the regu...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32801112b5
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVE:Exemestane is a third-generation aromatase inhibitor used in the treatment of breast cancer in postmenopausal women. Reduction to form 17-dihydroexemestane and subsequent glucuronidation to exemestane-17-O-glucuronide is a major pathway for exemestane metabolism. The goal of this study was to analyze 17-dihyd...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32833b04af
更新日期:2010-10-01 00:00:00
abstract:BACKGROUND:For prevention of joint destruction in rheumatoid arthritis, optimal management of therapy with disease-modifying antirheumatic drugs is essential. Pharmacogenomic evidence, if reliable, may be incorporated in the treatment of rheumatoid arthritis to achieve a more efficient activity control with minimized a...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/01.fpc.0000236326.80809.b1
更新日期:2007-06-01 00:00:00
abstract::The present study aimed to determine whether a polymorphism in CYP3A5, encoding the major CYP3A enzyme in the human kidney, is associated with blood pressure in Caucasians. A homogenous group of 115 young, white male students with normal or mildly elevated, but untreated blood pressure was included. Blood pressure was...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/01.fpc.0000175599.49764.98
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to assess whether the CYP2C9*2 and/or *3 variants might modify the risk for NSAID-related upper gastrointestinal bleeding (UGIB) in NSAID users. PATIENTS AND METHODS:We conducted a multicenter, case-control study in which cases were patients aged more than 18 years with a diagnosis ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000186
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND/OBJECTIVES:The zeta-1 family isoform of GST biotransforms the investigational drug dichloroacetate (DCA) and certain other halogenated carboxylic acids. Haplotype variability in GSTZ1 influences the kinetics and, possibly, the toxicity of DCA. DCA metabolism correlates with expression of the GSTZ1 protein, s...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000129
更新日期:2015-05-01 00:00:00
abstract::Rapid development in the annotation of human genetic variation has increased the numbers of single nucleotide polymorphisms (SNPs) in candidate genes by several orders of magnitude. The selection of both useful target SNPs for disease-gene association studies and SNPs associated with the treatment response is therefor...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/01.fpc.0000194422.12770.fb
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVES:This study investigated the involvement of ADH4 gene polymorphisms in the susceptibility to alcohol use disorders. METHODS:Thirty-eight single-nucleotide polymorphisms (SNPs) in and around the ADH4 gene were investigated in 136 Italian alcoholics and 276 healthy controls. A new approach based on a bioinform...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32834d05c8
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:A meta-analysis was carried out of published studies on the effect of the CYP3A5 6986A>G polymorphism in liver donors and transplant recipients on tacrolimus pharmacokinetics. METHODS:Cohort studies that evaluated the relationship between the CYP3A5 polymorphism in liver donors and transplant recipients and ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,meta分析,评审
doi:10.1097/FPC.0b013e3283642fb3
更新日期:2013-10-01 00:00:00
abstract:OBJECTIVES:Among serotonin (5-HT) receptors, the 5-HT3 receptor is the only ligand-gated ion channel. 5-HT3 antagonists such as ondansetron and tropisetron may improve auditory gating and neurocognitive deficits in schizophrenic patients. Moreover, many antipsychotic drugs are antagonists at 5-HT3 receptors. However, t...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,随机对照试验
doi:10.1097/FPC.0b013e3283313296
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the effect of polymorphisms affecting the clopidogrel metabolism (CYP3A4 IVS10+12G/A and CYP2C19*2) and the P2Y12 receptor (P2Y12 T744C) on modulating platelet function in acute coronary syndrome patients on dual antiplatelet treatment. BACKGROUND:Residual platelet reac...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e3282f1b2be
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVES:Body weight regulation is under complex control involving the central nervous system and peripheral pathways. The beta-adrenoceptor Galphas protein system plays an important role in heart rate regulation and lipid mobilization suggesting a key role for the stimulatory G protein Galphas in body weight regulat...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,随机对照试验
doi:10.1097/FPC.0b013e3282f49964
更新日期:2008-02-01 00:00:00
abstract::Recent investigations suggest genetic susceptibility of allopurinol-induced severe cutaneous adverse reactions (SCARs). However, the strength of association was variable according to phenotypes and ethnic backgrounds. To explore genetic markers for allopurinol-induced SCARs in Koreans, we genotyped human leukocyte ant...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32834282b8
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:Clinical response to topiramate can vary greatly in obese patients. Identifying genetic variants associated with treatment response could help gain insight into the mechanism of action of topiramate. Little is known about the relationship between genetic variability and topiramate treatment response. We perfo...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000185
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:Paraoxonase-1 (PON1) is synthesized in the liver and is bound to high-density lipoprotein particles in blood. PON1 protects against the development of atherosclerosis by metabolizing proatherogenic-oxidized lipids. The Southeastern USA (excluding Florida) has the country's highest age-adjusted mortality rate ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32834cebc6
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:Alcohol is detoxified in the liver by oxidizing enzymes that require nicotinamide adenine dinucleotide (NAD+) such that, in the rat, the availability of NAD+ contributes to control voluntary ethanol intake. The UChA and UChB lines of Wistar rats drink low and high amounts of ethanol respectively and differ in...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0b013e32832dc12a
更新日期:2009-07-01 00:00:00
abstract:BACKGROUND AND AIM:Genetic variants in the mammalian target of rapamycin (mTOR) gene have become an interesting topic for the study of genetic susceptibility to cancer, but their associations with the risk of gastric cancer have not been fully investigated. MATERIALS AND METHODS:In a hospital-based case-control study ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000163
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVE:Recently, the minor allele of the rs13064411A>G polymorphism in the WD repeat domain 52 (WDR52) gene was associated with increased statin-induced proprotein convertase subtilisin/kexin type 9 (PCSK9) levels and with LDL cholesterol response to statins. PCSK9 promotes LDL receptor degradation, leading to incre...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/FPC.0000000000000120
更新日期:2015-03-01 00:00:00
abstract::The study aimed to investigate whether polymorphisms in genes of the EGFR signaling pathway are associated with clinical outcome in advanced colorectal cancer (CRC) patients treated with single-agent Cetuximab. Polymorphisms of interest in the EGFR pathway include: cyclin D1 (CCND1) A870G, cyclooxygenase 2 (Cox-2) G-7...
journal_title:Pharmacogenetics and genomics
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/01.fpc.0000220562.67595.a5
更新日期:2006-07-01 00:00:00
abstract:BACKGROUND:The mammalian target of rapamycin (m-TOR) inhibitor sirolimus is an immunosuppressive drug used in kidney transplantation. m-TOR binds with Raptor and phosphorylates p70S6 kinase, a protein involved in numerous cell signalling pathways. We examined the association of candidate polymorphisms in m-TOR, Raptor ...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1097/FPC.0b013e328357359d
更新日期:2012-10-01 00:00:00
abstract::We recently showed an association between the FCGR3A V/F polymorphism and the biological response [assessed on the basis of a C-reactive protein (CRP) concentration decrease] to infliximab in Crohn's disease. The CRP and FCGR3A genes are located on the same 1q23 locus. The present study aimed: (i) to exclude a linkage...
journal_title:Pharmacogenetics and genomics
pub_type: 杂志文章
doi:10.1097/01.fpc.0000182776.57437.d8
更新日期:2006-01-01 00:00:00