Research Article

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Gene frequency; Human leukocyte antigen; Promoter; Pulmonary tuberculosis

Human leukocyte antigen (HLA) plays a central role in the regulation of the immune response. HLA class II molecules are essential for T cell-mediated adaptive immunity and present peptide antigens to CD4+ T cells. Because of its important role in the immune response and its high degree of polymorphism, the HLA system is associated with many diseases. We examined the ... more

G.L. Shi; X.L. Hu; L. Yang; C.L. Rong; Y.L. Guo; C.X. Song
04/27/2010
Gene frequency; Human leukocyte antigen; Lung carcinoma

The primary function of the human leukocyte antigen (HLA) system is to regulate the immune response. Because of its important role in the immune response and its high degree of polymorphism, the HLA system is associated with many diseases. We examined the polymorphisms of HLA-A, B and DRB1 alleles in 100 unrelated patients with lung carcinoma and in 438 unrelated normal controls of Han ... more

L. Yang; L.J. Wang; G.L. Shi; L. Ni; C.X. Song; Z.X. Zhang; S.F. Xu
12/02/2016
Actinin; Adult; Ankle Injuries; Asian People; China; Female; Gene frequency; Genetic association studies; Genetic predisposition to disease; Humans; male; Polymorphism, Single Nucleotide; Young Adult

In this study, we investigated the association between ACTN3 R577X polymorphism and non-acute ankle sprain by measuring the allele frequency and genotype distribution of ACTN3 in a Chinese Han population. We recruited 100 patients with non-acute ankle sprain and 100 healthy controls with no history of ankle injuries. Mass spectrometric analysis of single nucleotide polymorphism was used to ... more

B. Qi; J.Q. Liu; G.L. Liu
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Animals; Brazil; Breeding; Cattle; Gene frequency; Genetic markers; Leptin; Polymorphism, Single Nucleotide; Promoter Regions, Genetic; Red Meat; Sequence Analysis, DNA

Brazil is the world's largest producer of beef cattle; however, the quality of its herds needs to be improved. The use of molecular markers as auxiliary tools in selecting animals for reproduction with high pattern for beef production would significantly improve the quality of the final beef product in Brazil. The leptin gene has been demonstrated to be an excellent candidate gene for bovine ... more

R.C. Guimarães; J.S.N. Azevedo; S.C. Corrêa; J.E.G. Campelo; E.M. Barbosa; E.C. Gonçalves; S. Filho
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Amniotic fluid; Chromosomes, Human; Chromosomes, Human, Pair 13; Chromosomes, Human, Pair 18; Chromosomes, Human, Pair 21; Chromosomes, Human, X; Chromosomes, Human, Y; Female; Gene frequency; Genetic variation; Humans; Iran; male; Microsatellite Repeats; Pregnancy; Prenatal diagnosis; White People

Quantitative fluorescent polymerase chain reaction (QF-PCR), in recent years, has been accepted as a rapid, high throughput, and sensitive method for prenatal diagnosis of common chromosomal aneuploidies. Since short tandem repeats (STRs) are the cornerstone of QF-PCR technique, selection of the most polymorphic STR markers is an essential step for a successful QF-PCR assay. The genetic ... more

J. Saberzadeh; M.R. Miri; M.B. Tabei; M. Dianatpour; M. Fardaei
12/19/2016
Adult; Case-control studies; Female; Gene frequency; Genetic predisposition to disease; Humans; male; Matrix Metalloproteinase 1; Matrix Metalloproteinase 3; Matrix Metalloproteinase 9; Middle Aged; Polymorphism, Single Nucleotide; Promoter Regions, Genetic; Scleroderma, Systemic

The major pathological hallmark of the systemic sclerosis (SSc) is skin and internal organ fibrosis, which results from normal tissue architecture alterations and extracellular matrix (ECM) protein deposition. ECM components are degraded by matrix metalloproteinases (MMP). Promoter region polymorphisms in MMP genes may influence gene expression, resulting in an imbalance between ECM protein ... more

T.F. Rech; S.B.C. Moraes; M. Bredemeier; J. de Paoli; J.C.T. Brenol; R.M. Xavier; J.A.B. Chies; D. Simon
12/19/2016
Female; Gene frequency; Genetic markers; Humans; Immunologic Factors; Intravitreal Injections; Macular Degeneration; male; Polymorphism, Genetic; Precision Medicine; Proteins; Ranibizumab; Sequence Analysis, DNA; Treatment outcome

Age-related macular degeneration (AMD) is a leading cause of blindness in developed countries. The ARMS2 gene has been found to be associated with AMD. Currently, intravitreal ranibizumab (IVR) treatment is one of the widely used treatments for neovascular AMD. The aim of this study was to investigate the association between the genotype of ARMS2 rs10490924 polymorphism and IVR treatment ... more

H. Bardak; Y. Bardak; Y. Ercalik; T. Kumral; S. Imamoglu; M. Gunay; H. Ozbas; O. Bagci
12/19/2016
Brazil; Cystic fibrosis; Cystic Fibrosis Transmembrane Conductance Regulator; Early Diagnosis; Gene flow; Gene frequency; Genetic counseling; Healthy Volunteers; Humans; Mutation; White People

The ΔF508 mutation is the most common cause of cystic fibrosis and its prevalence varies worldwide. For instance, up to 20-fold variations in its frequency have been recorded across different areas of Brazil. This study aimed to compare the distribution of ΔF508 among healthy individuals of admixed Portuguese descent from Espírito Santo (ES), a state in Southeastern Brazil, to that in a ... more

A.M. Lanes; L.S. Louro; D.P. Ventorim; E. Stur; F.M. Garcia; L.P. Agostini; L.N.R. Alves; R.S. Reis; I.D. Louro; R.S. Dettogni
2/16/2017
Adolescent; Adult; Aged; Case-control studies; Female; Gene frequency; Genetic association studies; Genetic predisposition to disease; Genotype; Humans; Interferon-gamma; Introns; male; Middle Aged; Multiple sclerosis; Polymorphism, Single Nucleotide; Young Adult

The present study aims to examine the relationship between polymorphisms in the third intron of the IFN-γ gene and their influence on susceptibility to multiple sclerosis. A population-based case-control study was used for this purpose. Multiple sclerosis patients and healthy controls were interviewed. Genetic polymorphisms of IFN-γ intron III at the +2118 A/G and +3586 G/ACT sites were ... more

X.L. Wang; F.R. Meng; X. Wang; S.H. Wang; L. Guo
2/16/2017
Asian People; Case-control studies; Coronary artery disease; Female; Gene frequency; Genetic association studies; Genetic predisposition to disease; Humans; Interleukin-8; male; Polymorphism, Single Nucleotide

Interleukin-8 (IL-8) is a mediator of inflammation and plays an important role in regulating immune responses. To date, several studies have tested the association between IL-8 gene polymorphisms and development of coronary artery disease (CAD), but their results have proved to be inconsistent. We conducted an investigation to assess the relationship between the IL-8 -251A/T (rs4073) sequence ... more

R.J. Zhang; X.D. Li; S.W. Zhang; X.H. Li; L. Wu

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