RESUMEN
Numerous studies have evaluated the relationship between the T241M polymorphism of the X-ray repair cross-complementing group 3 (XRCC3) gene and colorectal cancer (CRC) risk. However, the specific relationship remains controversial. We conducted meta-analysis to investigate the relationship between the XRCC3 T241M polymorphism and CRC risk. The PubMed and Embase databases were searched for relevant studies investigating the relationship between the XRCC3 T241M polymorphism and CRC risk. The odds ratio (OR) and 95% confidence interval (CI) were used to assess the possible relationship. Thirteen individual case-control studies, including 4720 cases and 6104 controls, were identified and included in this meta-analysis. Meta-analyses revealed no relationship between the XRCC3 T241M polymorphism and CRC risk (TT vs MM: OR = 0.85, 95%CI = 0.63-1.14; TT vs MT: OR = 0.87, 95%CI = 0.68-1.10; dominant model: OR = 1.18, 95%CI = 0.92-1.50; recessive model: OR = 0.87, 95%CI = 0.69-1.11). In the further subgroup analysis by ethnicity, we found no direct relationship between the polymorphism and CRC risk in either Asians or Europeans. Our findings demonstrated that the T241M polymorphism in the XRCC3 gene may not be a risk factor for CRC development.
Asunto(s)
Neoplasias Colorrectales/genética , Proteínas de Unión al ADN/genética , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Pueblo Asiatico , Neoplasias Colorrectales/patología , Humanos , Polimorfismo de Nucleótido Simple , Factores de Riesgo , Población BlancaRESUMEN
The aim of this study was to explore postoperative changes in prostate-specific antigen (PSA) levels and risk factors that influence the clinical effects of ultrasound-guided permanent [(125)I] seed implantation in the treatment of prostate cancer. From July 2009 to December 2012, 41 prostate cancer patients who underwent transrectal ultrasound-guided [(125)I] seed implantation were followed up for 3-56 months. The patients were divided into 2 groups according to their results: group A, benign rebound group, 31 cases; and group B, biochemical relapse group, 10 cases. A blood analysis of group A showed that the initial PSA rise after a nadir occurred postoperatively at 16.8 ± 1.2 months, and in 65.8% (27/41) patients the rise occurred during 15-27 weeks. For group B, the initial PSA rise after a nadir occurred postoperatively at 30.2 ± 2.1 months, and the difference in the time parameter of the initial PSA rise after the nadir was statistically significant between the 2 groups (P < 0.01). During treatment, age was shown to be a risk factor for group A (P = 0.0027, P < 0.01). Postoperative changes in PSA levels after ultrasound-guided permanent [(125)I] seed implantation contributed to the assessment of the clinical treatment effects.
Asunto(s)
Adenocarcinoma/diagnóstico por imagen , Biomarcadores de Tumor/genética , Radioisótopos de Yodo/uso terapéutico , Recurrencia Local de Neoplasia/diagnóstico por imagen , Antígeno Prostático Específico/genética , Neoplasias de la Próstata/diagnóstico por imagen , Adenocarcinoma/genética , Adenocarcinoma/patología , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/sangre , Estudios de Seguimiento , Expresión Génica , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/genética , Recurrencia Local de Neoplasia/patología , Periodo Posoperatorio , Pronóstico , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/genética , Neoplasias de la Próstata/patología , Cintigrafía , Factores de Riesgo , Cirugía Asistida por Computador , UltrasonografíaRESUMEN
The insulin-like growth factor I (IGF-1) gene plays important roles in the growth and body composition of animals. Serum IGF1 concentration has been associated with growth traits in many livestock species. We found a polymorphism of cattle IGF1-TasI locus and analyzed the distribution of alleles in three cattle breeds, including Qinchuan, Nanyang, and Chinese Holstein. PCR-RFLP analysis showed that allele A was the dominant allele. The frequencies of allele A varied from 0.84 to 0.97. Distributions of genotypic and allelic frequencies were significantly different among breeds. Polymorphism of the IGF1 gene was significantly affecting hucklebone width at 6 months in the Nanyang breed and protein and fat yield of the third lactation in Chinese Holstein cattle. Individuals with allele C had a significantly higher performance in production traits.
Asunto(s)
Regiones no Traducidas 5'/genética , Bovinos/genética , Factor I del Crecimiento Similar a la Insulina/genética , Polimorfismo de Nucleótido Simple , Alelos , Animales , Animales Recién Nacidos , Composición Corporal/genética , Pesos y Medidas Corporales , Bovinos/clasificación , Bovinos/crecimiento & desarrollo , China , Femenino , Frecuencia de los Genes , Estudios de Asociación Genética/métodos , Genotipo , Masculino , Reacción en Cadena de la Polimerasa , Polimorfismo de Longitud del Fragmento de Restricción , Especificidad de la Especie , Factores de TiempoRESUMEN
A 43-year old man acquired acute hepatitis C virus (HCV) infection with unclear route of transmission. There were no known sexual or other risk factors for HCV acquisition. Phylogenetic analysis confirmed that the case was infected with identical genotype 1b strain. After symptomatic treatment for three weeks, the HCV was spontaneously cleared and liver function recovered.