Search

Vascular endothelial growth factor (VEGF) is a major angiogenic factor involved in a number of pathological processes, including neovascularization, a crucial step in the development of solid malignancies. The aim of this study was to investigate the association of polymorphisms in the VEGF gene with susceptibility to epithelial ovarian cancer (EOC).This case-control study included 303 EOC patients and 303 healthy controls. Genotyping of the VEGF gene polymorphisms at -460C/T, -1154G/A, -2578C/A, and +936C/T were performed by polymerase chain reaction and restriction fragment length polymorphism analysis.No significant difference was found in allele and genotype distributions of the -460C/T, +936C/T, and -2578C/A polymorphisms between patients and controls. However, the frequencies of -1154G/A genotype and allele were significantly different between the two groups (P = 0.037, P = 0.013). Compared with the G/A + A/A genotype, the G/G genotype could significantly increase the risk of developing EOC (odds ratio, 1.64; 95% confidence interval, 1.12-2.39). The haplotype analysis suggested that the -460T/-1154A/-2578C haplotype exhibited a decrease in the risk of developing EOC compared with the -460T/-1154G/-2578C haplotype (odds ratio, 0.644; 95% confidence interval, 0.415-0.999).The study suggested a possible association between the VEGF -1154G/A polymorphism with susceptibility to EOC, but there is no support for an association of the VEGF -460C/T, +936C/T, and -2578C/A polymorphisms with the risk for EOC. [ABSTRACT FROM AUTHOR]

Background and Aim: The FAS and FASL system play an important role in regulating apoptotic cell death. This study was designed to investigate the correlation of FAS-1377 G/A, -670 A/G and FASL-844 T/C polymorphisms with susceptibility to gastric cardiac adenocarcinoma in a population of a high-incidence region of Hebei Province., Methods: FAS-1377 G/A, -670 A/G and FASL-844 T/C polymorphisms were genotyped by polymerase chain reaction-restriction fragment length polymorphism analysis in 262 gastric cardiac carcinoma (GCA) patients and 524 healthy controls., Results: Family history of upper gastrointestinal cancer (UGIC) might increase the risk of developing GCA (age- and sex-adjusted odds ratio [OR] = 1.38, 95% confidence interval [CI] = 1.02-1.86). The overall allelotype and genotype distributions of FAS-1377 G/A, and FASL-844 T/C polymorphisms in GCA patients did not significantly differ from that in healthy controls (P > 0.05). Compared with individuals with a FAS-670 A/A genotype, individuals with an A/G genotype in a smoker group had a lower risk of developing GCA (age, sex, and family history of UGIC adjusted OR = 0.55, 95% CI = 0.34-0.88). When the genotypes of FAS and FASL single nucleotide polymorphisms (SNP) were combined to analyze, no significant correlation was found between these SNP and the risk for GCA development., Conclusion: In the high-incidence region of Hebei Province, FAS-1377 G/A and FASL-844 T/C polymorphisms were not associated with the risk of GCA. However, the FAS-670 A/G genotype might decrease the risk of GCA for smoker individuals.

Background: Vascular endothelial growth factor (VEGF) plays an important role in the development of endometriosis. The aim of this study was to investigate the association of polymorphisms in the VEGF gene with the susceptibility to endometriosis., Methods: This study comprised 344 North Chinese women with endometriosis and 360 healthy women without endometriosis recruited as control. Genotyping of the VEGF gene polymorphisms at -460C/T, -1154G/A, -2578C/A and +936C/T were performed by PCR and restriction fragment length polymorphism analysis., Results: No significant difference was found in allele and genotype distributions of the -460C/T, +936C/T polymorphisms between patients and controls. However, the frequencies of -1154G/A, -2578C/A genotype and allele were significantly different between the two groups (all P-value <0.013). The -2578A/A, -1154A/A genotypes were found less frequently in patients with endometriosis compared with controls. The haplotype distributions derived from three polymorphisms (-2578C/A, -1154G/A, -460C/T) differed between the two groups (P = 0.000)., Conclusions: The VEGF-460/-1154/-2578 TGC, CAA, TAA and TAC haplotypes were associated with endometriosis. The -1154A and -2578A alleles may be protective against the development of endometriosis in North Chinese women.

Objective: To investigate the association of single nucleotide polymorphisms (SNPs) in VEGF gene with the risk of endometriosis and adenomyosis., Methods: Genotypes were analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method in 344 endometriosis patients, 174 adenomyosis patients, 360 frequency-matched control women of endometriosis and 199 frequency-matched control women of adenomyosis., Results: No significant difference was found in allele frequencies and genotype distributions of the -460C/T polymorphism between patients (endometriosis and adenomyosis) and control women (all P value > 0.05). However, there were significant differences in genotype and allele distributions of the VEGF -1154G/A polymorphism between patients (endometriosis and adenomyosis) and control women (all P value < 0.05). The genotype frequencies of the VEGF -1154 AA, GA, and GG in endometriosis patients and control women were 1.7%, 28.8%, 69.5% and 5.8%, 32.8%, 61.4%, respectively; and the A and G allele frequencies in the two groups were 16.1%, 83.9% and 22.2%, 77.8%, respectively. The genotype frequencies of the VEGF -1154 AA, GA, and GG in adenomyosis patients and control women were 2.9%, 23.6%, 73.6% and 7.0%, 34.2%, 58.8%, respectively; and the A and G allele frequencies in the two groups were 14.7%, 85.3% and 24.1%, 75.9% respectively. Compared with GA+ AA genotype, GG genotypes could significantly increase the risk of endometriosis (OR:1.43,95%CI:1.05-1.96) and adenomyosis (OR:1.95,95%CI:1.26-3.03)., Conclusion: The VEGF -1154G/A polymorphism was associated with susceptibility to endometriosis and adenomyosis, and the GG genotype could significantly increase the risk of developing endometriosis and adenomyosis. However, the VEGF -460C/T polymorphism was not associated with susceptibility to endometriosis and adenomyosis in the population studied.

Objective: To investigate the effect of CDH1 3'-UTR + 54C/T single nucleotide polymorphism (SNP) on expression of luciferase reporter gene and its association with susceptibility to cervical cancer., Methods: The luciferase gene expression vectors containing CDH1 3'-UTR+54C/T SNP C or T allelotype were constructed. The effect of CDH1 3'-UTR+54C/T SNP on expression of luciferase reporter gene in 293 T cells were tested by daul luciferase reporter assay system. The CDH1 3'-UTR+54C/T SNP was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis in 280 cervical cancer patients and 330 healthy controls., Results: The luciferase activity analysis showed that the relative luciferase activity (RLA) of 293T cells with C allelotype was 1.46, which was significantly lower than that of the 293 T cells with T allelotype (3.01; t = 2.94, P = 0.042). There was no significant difference in age distribution between the cervical cancer patients and the healthy controls. The genotype frequency distribution of CDH1 3'-UTR+54C/T SNP in healthy controls did not significantly differ from that expected by Hardy-Weinberg equilibrium (P > 0.05). The C allelotype frequency of CDH1 in cervical cancer patients was 80.%, which was significantly higher than that in healthy controls (74.5%; chi2 = 6.59, P = 0.010). The T/T, T/C and C/C genotype frequencies of cervical cancer patients and healthy controls were 4.3%, 30.0%, 65.7% and 5.8%, 39.4%, 54.8%, respectively, which were significantly different (chi2 = 7.45, P = 0.024). Compared with individuals with T/T or T/C genotype, individuals with C/C genotype had significantly higher risks of developing cervical cancer (OR = 1.578, 95% CI = 1.136 - 2.191)., Conclusion: The C allelotype of CDH1 3'-UTR + 54C/T SNP might decrease the expression of luciferase reporter gene and the C/C genotype might be a potential risk for cervical cancer development