RESUMO
BACKGROUND: Colorectal cancer (CRC) is the third leading cause of cancer-related mortality worldwide. Current systematic methods for diagnosing have inherent limitations so development of a minimally-invasive diagnosis, based on the identification of sensitive biomarkers in liquid biopsies could therefore facilitate screening among population at risk. METHODS: In this study, we aim to develop a novel approach to identify highly sensitive and specific biomarkers by investigating the use of extracellular vesicles (EVs) isolated from the peritoneal lavage as a source of potential miRNA diagnostic biomarkers. We isolated EVs by ultracentrifugation from 25 ascitic fluids and 25 peritoneal lavages from non-cancer and CRC patients, respectively. Analysis of the expression of EV-associated miRNAs was performed using Taqman OpenArray technology through which we could detect 371 miRNAs. RESULTS: 210 miRNAs were significantly dysregulated (adjusted p value < 0.05 and abs(logFC) ≥ 1). The top-10 miRNAs, which had the AUC value higher than 0.95, were miRNA-199b-5p, miRNA-150-5p, miRNA-29c-5p, miRNA-218-5p, miRNA-99a-3p, miRNA-383-5p, miRNA-199a-3p, miRNA-193a-5p, miRNA-10b-5p and miRNA-181c-5p. CONCLUSIONS: This finding opens the avenue to the use of EV-associated miRNA of peritoneal lavages as an untapped source of biomarkers for CRC.
Assuntos
Adenocarcinoma/diagnóstico , Líquido Ascítico/metabolismo , Biomarcadores Tumorais , Neoplasias Colorretais/diagnóstico , Vesículas Extracelulares/genética , MicroRNAs/genética , Adenocarcinoma/genética , Adenocarcinoma/metabolismo , Adenocarcinoma/patologia , Idoso , Idoso de 80 Anos ou mais , Líquido Ascítico/patologia , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Estudos de Casos e Controles , Estudos de Coortes , Neoplasias Colorretais/genética , Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Vesículas Extracelulares/metabolismo , Feminino , Perfilação da Expressão Gênica/métodos , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , MicroRNAs/metabolismo , Pessoa de Meia-Idade , Análise de Sequência com Séries de Oligonucleotídeos , Lavagem Peritoneal , PrognósticoRESUMO
INTRODUCTION: Hemorrhoids are a prolapse of vasculopathic structures that cushion the anal canal and haemorrhoidectomy is the most effective treatment for grades III and IV In this retrospective study we compare the outcome after haemorrhoidectomy with Ligasure or with conventional diathermy. METHODS: From June 2005 to March 2009 we analyzed 75 patients affected by hemorrhoids (grades III and IV) who underwent haemorrhoidectomy in the University Hospital Arnau de Vilanova in Lleida. We evaluated the technique, the age and the sex, and compared the post-operative hospital stay, the post-operative pain and the complications with each of the techniques. RESULTS: We used Ligasure technique in 49 patients (65%) and conventional diathermy technique in 26 (35%). The mean age was 50.3 years. There was no significant difference in both postoperative length ofstay, with an average of2.13 days (P = 0.60), and postoperative pain in the first 15 days (P = 0.275). On the contrary, we found a significant difference in the rate of postoperative complications (P = 0.032) and in the post-surgical pain at one month (P = 0.03). CONCLUSIONS: In our experience the Ligasure haemorrhoidectomy has shown to have fewer complications and post-operative pain when compared with conventional diathermy haemorrhoidectomy.
Assuntos
Diatermia/métodos , Hemorroidas/cirurgia , Diatermia/efeitos adversos , Feminino , Humanos , Ligadura/efeitos adversos , Ligadura/métodos , Masculino , Pessoa de Meia-Idade , Dor Pós-Operatória , Estudos Retrospectivos , Índice de Gravidade de Doença , Resultado do TratamentoRESUMO
INTRODUCTION: Hemorrhoids are a prolapse of vasculopathic structures that cushion the anal canal and haemorrhoidectomy is the most effective treatment for grades III and IV In this retrospective study we compare the outcome after haemorrhoidectomy with Ligasure or with conventional diathermy. METHODS: From June 2005 to March 2009 we analyzed 75 patients affected by hemorrhoids (grades III and IV) who underwent haemorrhoidectomy in the University Hospital Arnau de Vilanova in Lleida. We evaluated the technique, the age and the sex, and compared the post-operative hospital stay, the post-operative pain and the complications with each of the techniques. RESULTS: We used Ligasure technique in 49 patients (65
) and conventional diathermy technique in 26 (35
). The mean age was 50.3 years. There was no significant difference in both postoperative length ofstay, with an average of2.13 days (P = 0.60), and postoperative pain in the first 15 days (P = 0.275). On the contrary, we found a significant difference in the rate of postoperative complications (P = 0.032) and in the post-surgical pain at one month (P = 0.03). CONCLUSIONS: In our experience the Ligasure haemorrhoidectomy has shown to have fewer complications and post-operative pain when compared with conventional diathermy haemorrhoidectomy.