RESUMEN
BACKGROUND: New biomarkers of progression in patients with prostate cancer (PCa) are needed to improve their classification and clinical management. This systematic review investigated the relationship between single nucleotide polymorphisms (SNPs) and PCa progression. METHODS: A keyword search was performed in Pubmed, EMBASE, Scopus, Web of Science, and Cochrane for publications between 2007 and 2022. We included articles with adjusted and significant associations, a median follow-up greater than or equal to 24 months, patients taken to radical prostatectomy (RP) as a first therapeutic option, and results presented based on biochemical recurrence (BCR). RESULTS: In the 27 articles selected, 73 SNPs were identified in 39 genes, organized in seven functional groups. Of these, 50 and 23 SNPs were significantly associated with a higher and lower risk of PCa progression, respectively. Likewise, four haplotypes were found to have a significant association with PCa progression. CONCLUSION: This article highlights the importance of SNPs as potential markers of PCa progression and their possible functional relationship with some genes relevant to its development and progression. However, most variants were identified only in cohorts from two countries; no additional studies reproduce these findings.
Asunto(s)
Polimorfismo de Nucleótido Simple , Neoplasias de la Próstata , Masculino , Humanos , Neoplasias de la Próstata/genética , Neoplasias de la Próstata/cirugía , Próstata , Prostatectomía/métodos , Recurrencia Local de Neoplasia/genéticaRESUMEN
El síndrome de ovario poliquísticoes unaendocrinopatía frecuente en la mujer en edad fértil, causado por exceso de andrógenos y es causa de infertilidad anovulatoria. Actualmente uno de los criterios utilizados para el diagnóstico, son los de Rotterdam y para esto se necesita de la clínica (hiperandrogenismo y disfunción ovulatoria), exámenes de laboratorio (hiperandrogenismo) y/o ultrasonido característico de dicho síndrome. Objetivo:determinar el síndrome de ovario poliquístico confirmado por métodos laboratoriales e imágenes y tratamiento indicado en consulta externa del Hospital Escuela Universitario. Material y métodos: estudio retrospectivo, transversal, no aleatorio. Se revisaron 56 expedientes de pacientes con el diagnóstico de síndrome de ovario poliquístico valorados mediante criterios de Rotterdam, 31(55.4%) tenian diagnóstico ultrasonográfico. Se utilizó un instrumento de recolección de datos tipo cuestionario registrandose lo siguiente: edad, sintomatología, exámenes laboratoriales, diagnóstico con descripción ultrasonográficas y tratamiento farmacológico. Resultados: con el diagnóstico de síndrome ovario poliquístico, 31(55.4%) teníandiagnósticos1 Médico especialista en ginecología y obstetricia, Hospital Escuela Universitario2Estudiante de sexto año, Facultad de Ciencias Médicas, Universidad Nacional Autónoma de Honduras.Autor de correspondencia: Silder Moncada Correo electrónico: silderjavier78@gmail.comRecibido: 19/09/2017Aceptado: 07/02/2019ultrasonográficos, en 26(83.9%) pacientes no se encontró consignado en el expediente síntomas de hiperandrogenismo, se consignó acantosis nigricans en 2(6.5%), alopecia y acné 3(9.7%), respectivamente como signo hiperandrogénico. Los fármacos utilizados para tratar síndrome de ovario poliquístico fueron metformina y anticonceptivos orales. Conclusión: el diagnóstico y tratamiento de síndrome de ovario poliquístico no sigue protocolos estandarizados, ya que de los 31 expedientes con resultado por ultrasonido, solo 5(16.1%) reunían los criterios para el diagnóstico de dicha patología...(AU)
Asunto(s)
Humanos , Femenino , Adolescente , Adulto , Síndrome del Ovario Poliquístico/diagnóstico , Síndrome del Ovario Poliquístico/diagnóstico por imagen , Hiperandrogenismo/complicaciones , Anticonceptivos Orales/farmacología , Trastornos de la Menstruación/complicacionesRESUMEN
BACKGROUND: Neospora caninum is a cyst-forming, coccidian parasite which is known to cause neurological disorders in dogs and abortion and neonatal mortality in cows and other livestock. This study reports the development of a loop-mediated isothermal amplification (LAMP) assay based on the Neospora caninum Nc-5 gene and compares its efficacy for detecting DNA to that of a semi-nested PCR test. RESULTS: Six primers were designed based on the Nc-5 repeat region of N. caninum. Specific LAMP primers led to successful amplification of N. caninum DNA at 63 °C in 30 min. The LAMP assay was highly specific (i.e. it did not reveal cross-reactivity with other parasite species) and had a low N. caninum plasmid DNA limit of detection (1 fg), which is ten times higher than that for the semi-nested PCR. LAMP applicability was evaluated using a set of naturally-infected samples (59 from canine faeces and five from bovine abortions). Thirty-nine percent (25/64) of the naturally-infected samples were positive for N. caninum DNA by LAMP and 36% (23/64) by semi-nested PCR. However, the LAMP assay is much faster to perform than semi-nested PCR and provides results in 30 min. CONCLUSION: The optimized reaction conditions described in this study resulted in a sensitive, specific and rapid technique for detecting N. caninum DNA. Considering the advantages of LAMP for detecting N. caninum DNA, further assays aimed at testing its usefulness on a wider range of field samples are recommended.
