Research Article

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Adolescent; Adult; Aged; Aged, 80 and over; Contraceptives, Oral; Female; Glutathione S-Transferase pi; Humans; Middle Aged; Papillomavirus Infections; Polymorphism, Single Nucleotide; Squamous Intraepithelial Lesions of the Cervix

Human papillomavirus (HPV) infection is considered a risk factor for cervical cancer. Even if the high-risk HPV (HR-HPV) infection is necessary, environmental co-factors and genetic susceptibility also play an important role in cervical cancer development. In this study, a possible association of rs1695 GSTP1 polymorphisms, HR-HPV infection, and oral contraceptive use with cancer lesion ... more

B.S. Chagas; A.P.A.D. Gurgel; S.S.L.Paiva Júnior; R.C.P. Lima; M.N. Cordeiro; R.R. Moura; A.V.C. Coelho; K.C.G. Nascimento; J.C.Silva Neto; S. Crovella; A.C. Freitas
3/15/2017
Adolescent; Adult; Aged; Aged, 80 and over; Asian Continental Ancestry Group; Child; Child, Preschool; China; Duffy Blood-Group System; Female; Gene frequency; Genotype; Humans; Infant; Kell Blood-Group System; male; Middle Aged; MNSs Blood-Group System; Young Adult

Human blood groups are a significant resource for patients, leading to a fierce international competition in the screening of rare blood groups. Some rare blood group screening programs have been implemented in western countries and Japan, but not particularly in China. Recently, the genetic background of ABO and Rh blood groups for different ethnic groups or regions in China has been focused ... more

G.Y. Lin; X.L. Du; J.J. Shan; Y.N. Zhang; Y.Q. Zhang; Q.H. Wang
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
6/29/2017
Adolescent; Adult; Anemia, Sickle Cell; Child; Child, Preschool; Female; Gene Deletion; Haplotypes; Hemoglobins; Humans; male; Middle Aged; Polymorphism, Genetic; Receptors, CCR5

Sickle cell disease shows several clinical manifestations in distinct levels of severity. This heterogeneity is due to the haplotype variability associated with the HbS gene, levels of fetal hemoglobin and environmental conditions, which modify the disease expression. Science community believes that the presence of a polymorphism in the CCR5 gene, which is related to chronic inflammatory state ... more

A.F. Nascimento; J.S. Oliveira; J.C.Silva Junior; A.A.L. Barbosa
12/02/2016
Adult; Aged; Aged, 80 and over; Asian Continental Ancestry Group; China; Chromosome aberrations; Chromosomes, Human; Female; Humans; Karyotyping; Lymphoma, Non-Hodgkin; male; Middle Aged; Young Adult

The incidence of non-Hodgkin lymphoma (NHL) in China is increasing and is attracting attention as a topic of research. The percentage of NHL cases in ethnic Uighur people is also gradually increasing. We therefore recruited Uighur people with NHL to investigate the correlation between genetic alternations and clinical/pathological features in an attempt to determine their clinical significance ... more

L. Xu; X.G. Zou; X. Wang; A.B.L.M.T. Hairesa; J.J. Liu
2/16/2017
Adult; Aged; Aged, 80 and over; Arabs; Colorectal neoplasms; Exons; Female; Humans; male; Middle Aged; Mutation; Mutation Rate; Prognosis; Proto-Oncogene Proteins p21(ras); Retrospective Studies; Saudi Arabia; Survival analysis; Young Adult

Mutations in codons 12/13 of K-ras exon 2 are associated with reduced benefit from anti-epidermal growth factor receptor antibody treatment for metastatic colorectal cancer (CRC). Here, we evaluated the frequency of K-ras mutations and their relationship with clinicopathological features and treatment outcomes in Saudi Arabian patients with CRC. The genetic status of K-ras was determined in ... more

J. Zekri; A. Al-Shehri; M. Mahrous; S. Al-Rehaily; T. Darwish; S. Bassi; E. Taani; A. Zahrani; S. Elsamany; J. Al-Maghrabi; B.B. Sadiq
3/30/2017
Adult; Aged; Aged, 80 and over; Alleles; Asian Continental Ancestry Group; Case-control studies; Female; Genetic association studies; Genetic predisposition to disease; Humans; Interleukin-17; Laryngeal Neoplasms; male; Middle Aged; Polymorphism, Single Nucleotide; Risk factors; Smoking

IL-17 is associated with the occurrence and development of laryngeal cancer. However, no study has reported the association between IL-17 polymorphisms and laryngeal cancer susceptibility. Therefore, we analyzed the association of three polymorphism loci (rs2275913, 197 G/A; rs3748067, 383 A/G; and rs763780, 7488 T/C) of IL-17A and IL-17F with laryngeal cancer in the Chinese population. A case ... more

F.Z. Si; Y.Q. Feng; M. Han
2/23/2017
Adolescent; Adult; Brazil; Cross-Sectional Studies; Cystathionine beta-Synthase; Epistasis, Genetic; Female; Folic acid; Gene frequency; Genetic predisposition to disease; Genotype; Heterozygote; Homocysteine; Homozygote; Humans; Linkage disequilibrium; male; Methylenetetrahydrofolate Reductase (NADPH2); Middle Aged; Polymorphism, Single Nucleotide; Risk factors; Thrombophilia; Thrombosis; Vitamin B 12; Young Adult

High plasma homocysteine (Hcy) ​​levels may be responsible for vaso-occlusive episodes and may have acquired and/or genetic causes. This cross-sectional study aimed to investigate the role of methylenetetrahydrofolate reductase (MTHFR; C677T; A1298C) and cystathionine-β-synthase (CBS; T833C/844ins68, G919A) polymorphisms in serum levels of folic acid, vitamin B12 and Hcy, and to verify a ... more

F.M. Amaral; A.L. Miranda-Vilela; G.S. Lordelo; I.F. Ribeiro; M.B. Daldegan; C.K. Grisolia
4/20/2017
Adolescent; Adult; Alleles; Case-control studies; China; Female; Genotype; Humans; Interleukin-6; Keloid; male; Middle Aged; Polymorphism, Single Nucleotide

The aim of the present study is to explore the effect of IL-6 gene polymorphisms on the development of keloid scar (KS) in the Chinese Han population. Genotyping of IL-6 was performed by the polymerase chain reaction (PCR), followed by restriction fragment length polymorphism assays (PCR-RFLP). Serum level of IL-6 was measured using enzyme-linked immunosorbent assay (ELISA). Results indicated ... more

X.J. Zhu; W.Z. Li; H. Li; C.Q. Fu; J. Liu
4/28/2017
Adolescent; Adult; Brazil; Chlamydia Infections; Chlamydia trachomatis; Female; Genotype; Humans; Middle Aged; Papillomaviridae; Papillomavirus Infections; Prevalence; Trichomonas vaginalis; Trichomonas Vaginitis

Sexually transmitted infections are an important cause of morbidity among sexually active women worldwide, and have been implicated as cofactors in the pathogenesis of cervical cancer. We investigated the prevalence of human papillomavirus (HPV), Chlamydia trachomatis (CT), and Trichomonas vaginalis (TV), and accessed the diversity of HPV in women with normal and abnormal cytology in Manaus, ... more

E. Costa-Lira; A.H.V.L. Jacinto; L.M. Silva; P.F.R. Napoleão; R.A.A. Barbosa-Filho; G.J.S. Cruz; S. Astolfi-Filho; C.M. Borborema-Santos

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