ABSTRACT
Introducción: las perforaciones septales y su corrección quirúrgica constituyen un reto para los otorrinolaringólogos. Se encuentran descritas en la literatura diferentes técnicas para el cierre de las perforaciones septales; sin embargo, sus resultados en términos de efectividad son muy variables y con pocos pacientes. Desde hace 8 años se viene realizando la técnica de cierre de perforación septal con injertos de cartílago en el servicio de otorrinolaringología del Hospital San José y se ha observado una respuesta clínica exitosa. Objetivo: describir los resultados postoperatorios de los pacientes manejados con la técnica de cierre quirúrgico de perforación septal con injertos de cartílago, en términos de aparición de complicaciones y frecuencia de perforación septal residual. Diseño: estudio de tipo cohorte descriptiva. Metodología: se describe una cohorte de pacientes manejados con la técnica de cierre quirúrgico de perforación septal con injertos de cartílago de banco o cartílago autólogo. Se incluyeron pacientes a partir de enero de 2014 a junio de 2018. Se extrajeron de la historia clínica los datos demográficos, clínicos, complicaciones y presentación de perforación septal residual. Resultados: la tasa de éxito de cierre de perforación septal fue de 78,3 %; siendo las etiologías más frecuentes antecedente de cirugía e idiopática. La complicación más común fue epistaxis en el 26 % de los pacientes, seguida de dolor en el 21,7 % en el postoperatorio mediato, el cual mejoró en los controles posteriores. Conclusión: los resultados con la técnica de cierre de perforación septal con injerto de banco fueron satisfactorios en esta población.
Introduction: septal perforations and surgical correction are a challenge for ENT specialists. Several techniques for closing septal perforations are described in the literature; however, its results in terms of effectiveness are very variable and with small sample sizes. The technique of closure of septal perforation with cartilage grafts has been performed for 8 years in the ENT department of San José Hospital with a successful clinical response. Aims: to describe the postoperative results of patients managed with the technique of surgical closure of septal perforation with cartilage grafts, in terms of complications and frequency of residual septal perforation. Design: descriptive cohort study. Methods: a cohort of patients managed with the surgical closure technique of septal perforation with grafts of bank cartilage or autologous cartilage are descrived. Patients were included from January 2014 to June 2018. Demographic, clinical data, complications and presentation of residual septal perforation were extracted from the clinical history Results: The success rate of septal perforation closure was 78.3%; being the most frequent etiologies antecedent of surgery and idiopathic. The most common complication was epistaxis in 26% of patients, followed by pain in 21.7% in the postoperative period, which improved in subsequent controls. Conclusion: the results with the technique of closure of septal perforation with bank grafting were satisfactory in this population.
Subject(s)
Humans , Nasal Septal Perforation , Nose Deformities, Acquired , Plastic Surgery ProceduresABSTRACT
Breast cancer is the most common type of cancer in females in Argentina, with an incidence rate similar to that in the USA. However, the contribution of the BRCA1 or BRCA2 mutation in breast cancer incidence has not yet been investigated in Argentina. In order to evaluate which BRCA1 polymorphisms or mutations characterize female breast cancer in Argentina, the current study enrolled 206 females with breast cancer from several hospitals from the southeast of Argentina. A buccal smear sample was obtained in duplicate from each patient and the DNA samples were processed for polymorphism analysis using the single-strand conformational polymorphism technique. The polymorphisms in BRCA1 were investigated using a combination of 15 primers to analyze exons 2, 3, 5, 20 and 11 (including the 11.1 to 11.12 regions). The BRCA1 mutations were confirmed by direct sequencing. Samples were successfully examined from 154 females and, among these, 16 mutations were identified in the BRCA1 gene representing 13.9% of the samples analyzed. One patient was identified with a polymorphism in exon 2 (0.86%), four in exon 20 (3.48%), four in exon 11.3 (3.48%), one in exon 11.7 (0.86%), two in exon 11.8 (1.74%), one in exon 11.10 (0.86%) and one in exon 11.11 (0.86%). The most prevalent alteration in BRCA1 was located in exon 11 (11 out of 16 patients; 68.75%). The objective of our next study is to evaluate the prevalence of mutations in the BRCA2 gene and analyze the BRCA1 gene in the healthy relatives of BRCA1 mutation carriers.
ABSTRACT
It is already known that the Maitake (D-Fraction) mushroom is involved in stimulating the immune system and activating certain cells that attack cancer, including macrophages, T-cells, and natural killer cells. According to the U.S. National Cancer Institute, polysaccharide complexes present in Maitake mushrooms appear to have significant anticancer activity. However, the exact molecular mechanism of the Maitake antitumoral effect is still unclear. Previously, we have reported that Maitake (D-Fraction) induces apoptosis in breast cancer cells by activation of BCL2-antagonist/killer 1 (BAK1) gene expression. At the present work, we are identifying which genes are responsible for the suppression of the tumoral phenotype mechanism induced by Maitake (D-Fraction) in breast cancer cells. Human breast cancer MCF-7 cells were treated with and without increased concentrations of Maitake D-Fraction (36, 91, 183, 367 µg/mL) for 24 h. Total RNA were isolated and cDNA microarrays were hybridized containing 25,000 human genes. Employing the cDNA microarray analysis, we found that Maitake D-Fraction modified the expression of 4068 genes (2420 were upmodulated and 1648 were downmodulated) in MCF-7 breast cancer cells in a dose-dependent manner during 24 h of treatment. The present data shows that Maitake D-Fraction suppresses the breast tumoral phenotype through a putative molecular mechanism modifying the expression of certain genes (such as IGFBP-7, ITGA2, ICAM3, SOD2, CAV-1, Cul-3, NRF2, Cycline E, ST7, and SPARC) that are involved in apoptosis stimulation, inhibition of cell growth and proliferation, cell cycle arrest, blocking migration and metastasis of tumoral cells, and inducing multidrug sensitivity. Altogether, these results suggest that Maitake D-Fraction could be a potential new target for breast cancer chemoprevention and treatment.