RESUMEN Objetivo: Identificar las principales reacciones adversas presentadas por pacientes con cáncer de mama HER2 positivo desde una clínica ambulatoria especializada en quimioterapia en la ciudad de Caruaru-PE (Brasil), después del uso de Trastuzumab. Métodos: Los datos se obtuvieron mediante el análisis de los registros médicos de los pacientes atendidos en la consulta externa entre enero de 2015 y diciembre de 2016. Resultados: Se seleccionaron 24 pacientes, de los cuales 12.5% presentaron cardiotoxicidad y 4.16% presentaron dolor abdominal, náuseas entre otros eventos adversos. Conclusión: La identificación de tales eventos adversos permite una mejor asistencia al paciente oncológico y una mejor adhesión al tratamiento. Debido a que son medicamentos específicos, pocos estudios se preocupan por evaluar estos efectos adversos, lo que a menudo dificulta la atención clínica.

ABSTRACT Objective: Identify the main adverse reactions presented by patients with HER2 positive breast cancer from an outpatient clinic specialized in chemotherapy in the city of Caruaru-PE, after the use of Trastuzumab. Methods: The data were obtained through the analysis of the medical records of the patients attended at the outpatient clinic from January 2015 to December 2016. Results: Twenty-four patients were selected, of whom 12.5% presented cardiotoxicity and 4.16% presented abdominal pain, nausea among other adverse events. Conclusion: Identifying such adverse events makes it possible to better assist the oncological patient and to better adhesion to the treatment. Because they are specific target drugs, few studies are concerned with evaluating these adverse events, which often makes clinical care difficult.

Our study reports the extraction and isolation of a new phaeophytin derivative 15¹-hydroxy-(15¹-S)-porphyrinolactone, designated anamariaine (1) herein, isolated from the chloroform fraction of aerial parts of Thyrsacanthus ramosissimus Moric. along with the known 15¹-ethoxy-(15¹-S)-porphyrinolactone (2). These compounds were identified by usual spectroscopic methods. Both compounds were subjected to in vitro (inhibitory activity) tests by means of supercoiled DNA relaxation techniques and were shown to display inhibitory activity against human DNA topoisomerase II-α at 50 µM. Interconversion of these two pigments under the mild conditions of the isolation techniques should be highly unlikely but cannot be entirely ruled out.