ABSTRACT
Objetivo: la actividad de los promotores y Comités de Ética de la Investigación con medicamentos ha aumentado en los últimos años. El objetivo fue diseñar y validar 2 instrumentos para analizar y evaluar la calidad formal de la hoja de información al participante y el formulario de consentimiento informado de ensayos clínicos con medicamentos, acorde con la legislación.Métododiseño (Buenas Prácticas Clínicas y normativas europea y española); validación (método Delphi y consenso de expertos: concordancia ≥ 80%); fiabilidad (método inter-observadores, índice Kappa). 40 hojas de información al participante/consentimientos informados evaluados.Resultadosse obtuvo muy buena concordancia en ambos instrumentos (k ≥ 0,81, p < 0,001). Las versiones definitivas estaban formadas por: checklist-hoja de información al participante: 5 secciones, 16 ítems y 46 sub-ítems; checklist-consentimiento informado: 11 ítems.Conclusioneslos instrumentos desarrollados son válidos, fiables y facilitan el análisis, la evaluación y la toma de decisión sobre las hojas de información al participante/consentimientos informados de ensayos clínicos con medicamentos. (AU)
Objective: The activity of sponsors and Ethics Committees for Research with medicines has increased in recent years. The objective was to design and validate 2 instruments to analyze and evaluate the formal quality of the patient information sheet and the informed consent form of clinical trials with drugs, in accordance with the legislation.MethodDesign (Guideline for good clinical practice and European and Spanish regulations); validation (Delphi method and expert consensus: concordance ≥ 80%); reliability (inter-observer method, Kappa index). 40 patient information sheets/informed consent forms were evaluated.ResultsVery good concordance was obtained in both checklists (k ≥ 0.81, p < 0.001). The final versions consisted of checklist-patient information sheet: 5 sections, 16 items and 46 sub-items; and checklist-informed consent form: 11 items.ConclusionThe instruments developed are valid, reliable and facilitate the analysis, evaluation, and decision-making on the patient information sheets/informed consent forms of clinical trials with drugs. (AU)
Subject(s)
Humans , Informed Consent , Reproducibility of ResultsABSTRACT
OBJECTIVE: The activity of sponsors and Ethics Committees for Research with medicines has increased in recent years. The objective was to design and validate 2 instruments to analyze and evaluate the formal quality of the patient information sheet and the informed consent form of clinical trials with drugs, in accordance with the legislation. METHODS: Design (Guideline for good clinical practice and European and Spanish regulations); validation (Delphi method and expert consensus: concordance ≥ 80%); reliability (inter-observer method, Kappa index). 40 patient information sheets/informed consent forms were evaluated. RESULTS: Very good concordance was obtained in both checklists (k ≥ 0.81, p b 0.001). The ï¬nal versions consisted of checklist-patient information sheet: 5 sections, 16 items and 46 sub-items; and checklist-informed consent form: 11 items. CONCLUSION: The instruments developed are valid, reliable and facilitate the analysis, evaluation, and decision-making on the patient information sheets/informed consent forms of clinical trials with drugs.
Subject(s)
Drug Therapy , Informed Consent , Humans , Reproducibility of Results , Clinical Trials as TopicABSTRACT
OBJECTIVE: The activity of sponsors and Ethics Committees for Research with medicines has increased in recent years. The objective was to design and validate 2 instruments to analyze and evaluate the formal quality of the patient information sheet and the informed consent form of clinical trials with drugs, in accordance with the legislation. METHOD: Design (Guideline for good clinical practice and European and Spanish regulations); validation (Delphi method and expert consensus: concordance ≥ 80%); reliability (inter-observer method, Kappa index). 40 patient information sheets/informed consent forms were evaluated. RESULTS: Very good concordance was obtained in both checklists (k ≥ 0.81, p < 0.001). The final versions consisted of checklist-patient information sheet: 5 sections, 16 items and 46 sub-items; and checklist-informed consent form: 11 items. CONCLUSION: The instruments developed are valid, reliable and facilitate the analysis, evaluation, and decision-making on the patient information sheets/informed consent forms of clinical trials with drugs.
Subject(s)
Informed Consent , Humans , Reproducibility of ResultsABSTRACT
BACKGROUND: "Horchata" is an herbal mixture infusion consumed in Southern Ecuador; 66% of its plants are anti-inflammatory medicinal plant, and 51% are analgesics. Anti-inflammatory substances can prevent carcinogenesis mediated by cytotoxic effects and can prevent DNA damage. The aim of this study was to evaluate the cytotoxicity and apoptotic/antigenotoxic effects of horchata as well as its mechanism. METHODS: Nine different varieties of horchata were prepared in the traditional way and then freeze-dried. Phytochemical screening tested for the presence of secondary metabolites using standard procedures and antioxidant activities. The cytotoxic activity was evaluated on cerebral astrocytoma (D-384), prostate cancer (PC-3), breast cancer (MCF-7), colon cancer (RKO), lung cancer (A-549), immortalized Chinese hamster ovary cells (CHO-K1), and human peripheral blood lymphocytes via a MTS assay. The pro-apoptotic effects were evaluated with Anexin V/Propidium Iodide and western blot of Bax, Bcl-2, TP53, and TP73. Induction and reduction of ROS were assessed by fluorimetry. Genotoxic and antigenotoxic effects were evaluated with a comet assay and micronuclei on binucleated cells. RESULTS: Five of nine horchatas had cytotoxic effects against D-384 while not affecting normal cells. These horchatas induce cell death by apoptosis modulated by p53/p73. In CHO-K1 cells, the horchatas decrease the damage induced by hydrogen peroxide and Mitomycin C measured in the comet and micronucleus assay respectively. CONCLUSIONS: The IC50 range of effective horchatas in D-384 was 41 to 122 µg·mL-1. This effect may be related to its use in traditional medicine (brain tonic). On the other hand, immortalized Chinese hamster ovary cells (CHO-K1) and lymphocytes did not show a cytotoxic effect. The most potent horchata induced apoptosis via a p53/p73-mediated mechanism. The horchatas present antigenotoxic properties, which may be related to the antioxidant capacity. Future studies on horchata components are necessary to understand the interactions and beneficial properties.
