Integrated care pathway for rectal cancer treatment: cross-sectional post-implementation study using a logic model framework

ABSTRACT BACKGROUND: Management of rectal cancer has become more complex with multimodality therapy (neoadjuvant chemoradiotherapy and surgery) and this has led to the need to organize multidisciplinary teams. The aim of this study was to report on the planning, implementation and evaluation of an integrated care pathway for neoadjuvant treatment of middle and lower rectal cancer. DESIGN AND SETTING: This was a cross-sectional post-implementation study that was carried out at a public university cancer center. METHODS: The Framework for Program Evaluation in Public Health of the Centers for Disease Control and Prevention (CDC) was used to identify resources and activities; link results from activities and outcomes with expected goals; and originate indicators and outcome measurements. RESULTS: The logic model identified four activities: stakeholders' engagement, clinical pathway development, information technology improvements and training programs; and three categories of outcomes: access to care, effectiveness and organizational outcomes. The measurements involved 218 patients, among whom 66.3% had their first consultation within 15 days after admission; 75.2% underwent surgery < 14 weeks after the end of neoadjuvant treatment and 72.7% completed the treatment in < 189 days. There was 100% adherence to the protocol for the regimen of 5-fluorouracil and leucovorin. CONCLUSIONS: The logic model was useful for evaluating the implementation of the integrated care pathways and for identifying measurements to be made in future outcome studies.

Effect of FOLFOX6 chemotherapy on serum VEGF expression in advanced colorectal cancer patients

SUMMARY OBJECTIVE: To explore the effect of FOLFOX6 chemotherapy on serum vascular endothelial growth factor (VEGF) expression in advanced colorectal cancer patients. METHODS: A retrospective analysis of 81 patients with advanced colorectal cancer who visited our hospital from March 2014 to February 2016 was performed. All the patients were treated with FOLFOX6 chemotherapy. On day 1, patients received oxaliplatin 100 mg/m2 ivgtt (2h), calcium folinate 200 mg/m2 ivgtt (2h), 5 fluorouracil 400 mg/m2 iv bolus and 5 fluorouracil 2500 mg/m2 ivgtt (5h). The treatment course was 2 weeks, and 4 treatment courses were required. The changes in the levels of VEGF and CRP and quality of life before and after 4 courses of chemotherapy were observed and therapeutic effects and adverse reactions after chemotherapy were evaluated. RESULTS: After treatment, the total efficiency of chemotherapy was 82.72% (67/81) with 24 cases in complete remission, 25 cases in partial response, 18 cases in stable disease and 14 cases in progressive disease. The levels of CRP and VEGF after the treatment were significantly lower than those before treatment (5.69±0.77) mg/L vs. (7.99±1.36) mg/L; (443.26±21.55) pg/mL vs. (542.83±20.44) pg/mL] (P<0.05). The KPS grade after treatment was significantly higher than that before treatment (57.84±4.6) point vs. (50.99±3.73) point] (P<0.05). Among them, 3 cases developed a rash, 5 cases experienced hair loss, and 9 cases developed nausea and vomiting. CONCLUSION: FOLFOX6 chemotherapy can decrease serum VEGF expression in patients with advanced colorectal cancer and enhance the curative effect with high safety, which is good for the improvement of patients' survival.

RESUMO OBJETIVO: Explorar o efeito da quimioterapia Folfox6 na expressão do fator de crescimento endotelial vascular sérico (VEGF) em pacientes com câncer colorretal avançado. MÉTODOS: Uma análise retrospectiva de 81 pacientes com câncer colorretal avançado que visitaram nosso hospital de março de 2014 a fevereiro de 2016 foi realizada. Todos os pacientes foram tratados com quimioterapia Folfox6. No dia 1, os doentes receberam oxaliplatina 100 mg / m2 ivgtt (2h), folinato de cálcio 200 mg/m2 ivgtt (2h), 5 fluorouracil 400 mg/m2 iv bolus e 5 fluorouracil 2.500 mg/m2 ivgtt (5h). O curso de tratamento foi de duas semanas e foram necessários quatro cursos de tratamento. Foram observadas as alterações nos níveis de VEGF e CRP e qualidade de vida antes e após quatro cursos de quimioterapia e avaliados os efeitos terapêuticos e reações adversas após a quimioterapia. RESULTADOS: Após o tratamento, a eficácia total da quimioterapia foi de 82,72% (67/81), com 24 casos em remissão completa, 25 casos em resposta parcial, 18 casos em doença estável e 14 casos em doença progressiva. Os níveis de CRP e VEGF após o tratamento foram significativamente inferiores aos do tratamento (5,69 ± 0,77) mg / L vs. (7,99 ± 1,36) mg / L; (443,26 ± 21,55) pg / mL vs. (542,83 ± 20,44) pg / mL] (P < 0,05). O grau de KPS após o tratamento foi significativamente maior do que antes do tratamento (57,84 ± 4,6 pontos) vs. (50,99 ± 3,73 pontos)] (P < 0,05). Entre eles, três casos desenvolveram erupção cutânea, cinco casos sofreram perda de cabelo e nove casos desenvolveram náuseas e vômitos. CONCLUSÃO: A quimioterapia Folfox6 pode, obviamente, diminuir a expressão de VEGF no soro em pacientes com câncer colorretal avançado e melhorar o efeito curativo com alta segurança, o que é bom para a melhoria da sobrevivência dos pacientes.

Respuesta histológica completa a la neoadyuvancia en carcinoma gástrico avanzado: A propósito de un caso y revisión de la literatura / Histological complete response to neoadjuvant therapy in advanced gastric carcinoma: A case report and review of literature

La presente comunicación, describe el primer caso en el Instituto Regional de Enfermedades Neoplásicas "Luis Pinillos Ganoza" IREN Norte en la que una paciente con carcinoma gástrico avanzado ha mostrado respuesta histopatológica completa a neoadyuvancia. Se presenta una paciente mujer de 70 años con diagnóstico histopatológico de adenocarcinoma gástrico tubular moderadamente diferenciado, localmente avanzado con imágenes de adenopatías perigástricas asociadas y pérdida de la interfase entre tumoración gástrica, hilio hepático y vesícula biliar. Luego de 6 cursos de quimioterapia neoadyuvante con esquema FOLFOX - 4 al 80%, se obtiene una respuesta casi completa desde el punto de vista tomográfico; por ello a la paciente se le realiza gastrectomía subtotal distal más linfadenectomía D2 más gastroyeyunoanastomosis Billroth II término lateral tipo Hofmeister Finsterer, verificándose, al examen microscópico de la pieza operatoria, sólo gastritis crónica y aguda con áreas mucosas y cambios reactivos. No se observa neoplasia maligna viable. Ganglios linfáticos: 0/33. Paciente evoluciona favorablemente. A propósito del caso se hace una revisión de la literatura médica relevante actualizada

This communication describes the first case in the Regional Institute of Neoplastic Diseases "Luis Pinillos Ganoza" IREN North in which a patient with advanced gastric carcinoma showed complete response to neoadjuvant histopathologic. We describe the case of a patient woman of 70 years old with histopathologic diagnosis of moderately differentiated tubular gastric adenocarcinoma, locally advanced associated with images of perigastric lymphadenopathy and loss of the interface between gastric tumor, hepatic hilum and gallbladder. After 6 courses of neoadjuvant chemotherapy with FOLFOX scheme - 4 to 80%, an almost complete response from the point of tomographic view is obtained, so the patient is underwent to distal subtotal gastrectomy lymphadenectomy D2 more gastrojejunoanastomosis Billroth II termino lateral type Hofmeister Finsterer verifying on microscopic examination of surgical specimen only acute and chronic gastritis with mucous areas and reactive changes. No feasible malignancy is observed. Lymph nodes: 0/33. Commenting on the case, a review of recent relevant literature is realized

Eficacia y seguridad de bevacizumab en combinación con quimioterapia folfiri en el tratamiento de segunda línea para pacientes con diagnostico de cáncer colorrectal metastásico / Efficacy and safety of bevacizumab in combination with folinic chemotherapy in second-line treatment for patients diagnosed with metastatic colorectal cancer

INTRODUCCIÓN: Antecedentes: El presente dictamen expone la evaluación de la eficacia y seguridad del uso de bevacizumab en combinación con quimioterapia FOLFIRI como tratamiento de segunda línea para pacientes de segunda línea para pacientes para pacientes con diagnóstico de cáncer colorrectal metastásico. Aspectos Generales: El cáncer colorrectal es uno de los cánceres más frecuentes a nivel mundial. Anualmente se reportan más de 1.361 millones de nuevos casos y 694.000 muertes por cáncer colorrectal constituyéndose en la tercera cuasa más frecuente de cáncer y en la cuarta causa de muerte a nivel mundial. Aproximadamente, uns 20-55% de los pacientes con cácner colorrectal presentan enfermedad metastásica al momento del diagnóstico, mientras que u 50-60% de los pacientes diagnosticados en estadios tempranos, pese a ser tratados quirúrgicamente igual desarrollarán metástasis, mayormente de localización hepática. Debido a ello, el prognóstico de los pacientes con cáncer colorrectal metastásico o recurrente en general es pobre, asociándose a una sobrevida global a los 5 años del 50%.Tecnología Sanitaria de Interés: Bevacizumab es un anticuerpo monoclonal específico contra el factor de crecimiento del endotelio vascular (VEGF) por sus siglas en inglés) humano. Al ligarse al VEGF, específicamente al VEGFp-A, actúa como una citoquina antiangiogénica previendo su interacción con los receptores del VEGFE-1 and VEGFR-2), mediando la inhibición del crecimiento y mantenimiento de los vasos sanguíneos de una variedad de células tumorales. METODOLOGIA: Estrategia de Búsqueda: Se realizó una búsqueda de la literatura con respecto a la eficacia y seguridad de bevacizumab en combinación con esquema de quimioterapia FOLFIRI como tratamiento de esegunda línea para pacientes con cáncer colorrectal metastásico. Las seguientes fuentes han sido revisadas y consultadas con la intención de buscar la mejor evidencia disponible que directamente responda a la pregunta PICO de esta evaluación. METODOLOGÍA: Sinopsis de la Evidencia: Se realizó la busqueda bibliográfica y de evidencia cientifica hasta diciembre 2016 para el sustento de uso de bevacizumab en combinación con el esquema de quimioterapia FOLFIRI como tratamiento de segunda línea para pacientes con diagnóstico de cáncer colocrrectal metastásico que hubieran recibido previamente quimioterapia a base de oxaliplatino. Se presenta la evidencia disponible según el tipo de publicación priorizada en los criterios de inclusión. CONCLUSIONES: El presente dictamen se evaluó la evidencia científica publicada hasta diciembre de 2016 en relación al uso de bevacizumab en combinación con quimioterapia FOLFIRI como una alternativa de tratamiento de segunda línea más eficaz y segura que la quimioterapia FOLFIRI, en pacientes con cácner colocrrectal metastásico que han progresado a quimioterapia a base de oxaliplatino. La mejor evidencia disponible a la fecha no permite evaluar el uso de bevacizumab más quimioterapia FOLFIRI, en comparación a quimioterapia FOLFIRI sin bevacizumab en pacientes que han progresado a regímenes de quimioterapia a base de oxaliplatino sin bevacizumab. Adicionalmente, en el Petitorio Farmacológico de EsSalud existen otras alternativas de tratamiento quimioterapéutico disponibles para pacientes que han progresado a regímenes a base de oxaliplatino, tales como irinotecán y FOLFIRI, las cuales también son considerados opciones de tratamiento de segunda línea en las GPC internacionales. Por lo expuesto, el Instituto de Evaluación de Tecnologías en Salud e Investigación (IETSI) no aprueba el uso de bevacizumab en combinación en quimioterapia FOLFIRI para el tratamiento de cáncer colorrectal metastásico en pacientes que han progresado a quimioterapia a base de oxaliplatino.

Eficacia y seguridad de la adición de panitumumab a folfox o folfiri como tratamiento de primera línea en pacientes con cancer colrectal metastásico con gen kras no mutado (wild type) e irresecable / Efficacy and safety of the addition of panitumumab to folfox or folfiri as first-line treatment in patients with metastatic col- rectal cancer with non-mutated (wild type) kras gene and unresectable

INTRODUCCIÓN: Antecedentes: El presente dictamen expone la evaluación de tecnología de la eficacia y seguridad del uso de panitumumab asociado a quimioterapia como primera línea de tratamiento de cácner colorrectal metastásico. Aspectos Generales: El cáncer colorrectal es la segunda causa de muerte por cáncer en los países occidentales. Al momento del diagnóstico, alrededor del 20-25% de los pacientes presentan cáncer colorrectal metastásico (CCRm), mientras que se estima que entre el 20 y el 35% lo desarrollará durante el curso de la enfermedad. Además, entre el 80% y el 90% de los casos de CCRm son irresecables. A pesar de los avances en el tratamiento del CCRm, el propósito aún es pobre, con una tasa de sobrevida a los 5 años que varía entre el 10% al 20%. Tecnología Sanitaria de Interés: Panitumumab, es un anticuerpo monoclonal recombinante totalmente humano IgG2, que se une con gran afinidad y especialidad al EGFR humano. El EGFR es una glicoproteína transmembrana que pertenece a una subfamilia de receptores de las tirosinas quinasas de tipo I, que incluye el EGFR (HER1/c-ErbB-1), HER2, HER3, HER4. El EGFR potencia el crecimiento celular en tejidos epiteliales normales, incluidos la piel y los folículos pilosos, y se expresa en una variedad de células tumorales. La unión panitumumab al EGFR provoca la internalización del receptor, la inhibición del crecimiento celular, la inducción de la apoptosis y un descenso en la producción de interleuquina 8 y del factor de crecimiento del endotelio vascular. El EGFR juega un rol importante en el desarrollo de CCR, por lo que su inhibición podría dar la impresión de ser una estrategia prometedora de tratamiento para CCRm. METODOLOGIA: Estrategia de Búsqueda: Se llevó a cabo una búsqueda sistematica de la literatura con respecto a la eficacia y seguridad de la adición de panitumumab a FOLFOX o FOLFIRI comparado con FOLFOX o FOLFIRI, para el tratamiento de cáncer colorrectal metastásico, irresecable, KRAS no mutado, ECOG-2. La búsqueda s einició revisando la inforamción sobre el uso del medicamiento de acuerdo con entidades reguladoras como la Food and Drug Administration (FDA), la European Medicines Agency (EMA) y la Dirección General de Medicamentos y Drogas (DIGEMID). Posteriormente, se revisaron las bases de datos de Pubmed, TRIPDATABASE y www.clinicals.gov. Adicionalmente, se realizó una búsqueda de evaluaciones de tecnologías y guías de práctica clínica en las páginas web de grupos dedicados a la investigación y educación en salud en general como The National Institute for Helath and Care Excelence (NICE), Scottish Intercollegiate Guidelines Network (SIGN), National Comprehensive Cancer Network (NCCN), y The Cochrane Collaboration. RESULTADOS: Sinopsis de la Eidenci: Se llevó a cabo una búsqueda de evidencia científica relacionada al uso de panitumumab asociado a quimioterapia para el tratamiento de CCRm irresecable, KRAS no mutado. CONCLUSIONES: El tratamiento para el CCRm recomendado consiste en quimioterapia sistémica con FOLFOX, FOLFIRI o XELOX, todos los cuales se encuentran disponibles en el Petitorio Farmacológico de EsSalud. De acuerdo a las GPC revisadas, la adición de panitumumab a quimioterapia es opcional y condicionada a la ausencia de mutaciones KRAS y de la ubicación de las lesiones en el lado izquierdo. La evidencia evaluada en relación a la adición de panitumumab a FOLFOX en comparación con FOLFOX solo, no muestra benefícios en términos de aumento de la sobrevida global ni de la calidad de vida. Los benefícios en términos de SLP mostrados en el dictamen son modestos y provienen de análisis de subgrupos en que se ha perdido la aleatorización. La evidencia econtrada en relación a la adición de panitumumab a FOLFIRI en comparación con FOLFIRI solo, no pudo ser considerada para el presente dictamen por que proviene de estudios fase II, sin brazo comparador. La adición de panitumumab a quimioterapia presenta una incidencia alta de toxicidad dermatológica (>90%), con un 34 % d eEA dermatológicos grado 3 y menos de 1% de EA dermatológicos grado 5. Asismismo, la incidencia de eventos adversos no dermatológicos grado 3 o 4 fue del 82% y de eventos adversos serios fue de 40%. Así, la relación riesgo benefício no es clara, por lo que, no se encontraron argumentos técnicos que justifiquen la adición de panitumumab a la quimioterapia sistémica (FOLFOX o FOLFIRI) como primera línea de tratamiento para cpancer colorrectal irresecable, KRAS no mtado. El Instituto de Evaluación de Tecnologías en Salud-IETSI, no aprueba la adición de panitumumab a quimioterapia a base de FOLFOX o FOLFIRI como tratamiento de primera línea para cáncer colorrectal metastásico, irresecable, KRAS no mutado.

Treatment of low-risk gestational trophoblastic neoplasia comparing biweekly eight-day Methotrexate with folinic acid versus bolus-dose Actinomycin-D, among Brazilian women / Tratamento da neoplasia trofoblástica gestacional de baixo-risco, comparando aplicação quinzenal de oito dias de Metotrexato com ácido folínico versus Actinomicina D em bolo, em mulheres brasileiras

PURPOSE: To compare two single-agent chemotherapy (ChT) regimens evaluating, in first-line treatment, response and side effects and, in final single-agent treatment, the outcomes, among Brazilian patients with low-risk gestational trophoblastic neoplasia (GTN), according to International Federation of Gynecology and Obstetrics (FIGO) 2002. METHODS: Retrospective analysis of two concurrent cohorts with 194 low-risk GTN patients: from 1992 to 2012, as first-line treatment, 115 patients received 4 intramuscular doses of methotrexate alternated with 4 oral doses of folinic acid (MTX/FA) repetead every 14 days and, since 1996, 79 patients received an endovenous bolus-dose of actinomycin D (Act-D), biweekly. At GTN diagnosis, patient opinion was taken into consideration when defining the initial single-agent ChT regimen, and when there was resistance or toxicity to one regimen, the other drug was used preferentially. This study was approved by the Irmandade da Santa Casa de Misericórdia de Porto Alegre Ethical Committee. RESULTS: Both groups were clinically similar (p>0.05). In first-line treatments, frequency of complete response was similar (75.7% with MTX/FA and 67.1% with bolus Act-D); the number of ChT courses -median 3 (range: 1-10) with MTX/FA and 2 (range: 1-6) with bolus Act-D - and the time to remission -median 9 weeks (range: 2-16) with MTX/FA and 10 weeks (range: 2-16) with bolus Act-D) - were not different between the groups. In both groups, first-line side effects frequency were high but intensity was low; stomatitis was higher with MTX/FA (p<0.01) and nausea and vomit with Act-D (p<0.01). Final single-agent ChT responses were high in both groups (94.8% with MTX/FA and 83.5% with bolus Act-D; p<0.01) and 13% higher in the group initially treated with MTX/FA. Rates of hysterectomy and of GTN recurrence were low and similar. No patient died due to GTN. CONCLUSION: The two regimens had similar first-line ChT response. ...

OBJETIVO: Em mulheres brasileiras com neoplasia trofoblástica gestacional (NTG) de baixo-risco, de acordo com a Federação Internacional de Ginecologia e Obstetrícia (FIGO) 2002, comparar dois regimes de quimioterapia (Qt) por agente único avaliando resposta e efeitos colaterais no tratamento de primeira linha, e a eficácia no tratamento final por agente único de Qt. MÉTODOS: Análise retrospectiva de duas coortes concorrentes com 194 pacientes com NTG de baixo risco: de 1992 a 2012; como primeira linha, 115 pacientes receberam 4 doses intramusculares de metotrexato alternado com 4 doses orais de ácido folínico (MTX/FA) repetidos a cada 14 dias e, desde 1996, 79 pacientes receberam quinzenalmente dose em bolo de actinomicina D (Act-D) por via endovenosa. No momento do diagnóstico da NTG, a opinião da paciente foi levada em consideração para definir o regime de Qt por agente único inicial e, quando havia resistência ou toxicidade a um regime, o outro fármaco era usado preferentemente. Este estudo foi aprovado pelo Comitê de Ética da Irmandade da Santa Casa de Misericórdia de Porto Alegre. RESULTADOS: Ambos os grupos eram clinicamente semelhantes (p>0,05). Nos tratamentos de primeira linha, a frequência de resposta completa foi semelhante (75,7% com MTX/FA e 67,1% com Act-D em bolo); não houve diferença entre os grupos quanto ao número de séries de Qt - mediana 3 (intervalo: 1-10) com MTX/FA e 2 (intervalo: 1-6) com Act-D em bolo - e ao tempo para remissão - mediana 9 semanas (intervalo: 2-16) com MTX/FA e 10 semanas (intervalo: 2-16) com Act-D em bolo. Em ambos os grupos, foi elevada a frequência de efeitos colaterais no tratamento de primeira linha, mas com intensidade baixa; estomatite foi mais frequente com MTX/FA (p<0.01) e náuseas e vômitos com Act-D (p<0.01). A resposta final à Qt por agente único foi alta nos dois grupos (94,8% com MTX/FA e 83,5% com Act-D em bolo; p<0,01) e 13% maior no grupo inicialmente tratado com ...

Utilización correcta de las técnicas de detección de cáncer de mama en mujeres mexicanas / Correct utilization of breast cancer detection techniques in Mexican women

Objetivo. Identificar las características asociadas con la prevalencia de utilización correcta de la autoexploración manual (AE), el examen clínico (EC) y la mamografía (MA) para la detección de cáncer mamario (CaMa). Material y métodos. Se entrevistó a 1 030 mujeres mexicanas, sanas, de entre 20 y 88 años sobre su historia reproductiva y sociodemográfica. Con base en la forma y frecuencia de realización de estas técnicas de detección, se construyó un índice de utilización correcta. Resultados. La prevalencia de utilización correcta de la AE fue de 11% y del EC de 5.4%. El 7.6% de las mujeres entre 40 y 49 años y 31.6% de las mujeres con 50 años o más se realizaron una MA de acuerdo con la norma vigente al momento del estudio. El aseguramiento por parte del Instituto Mexicano del Seguro Social, del Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado o del Seguro Popular fue el principal determinante de la utilización de la MA. Conclusiones. Se evidencia la necesidad de incrementar la correcta utilización de la AE, el EC y la MA.

Objective. Identify the characteristics associated with correct utilization of self examination (SE), clinical exam (CE) and mammography (MA) for breast cancer (BC) early detection. Materials and methods. Interviews were undertaken with 1 030 Mexican women (n=1 030), 20 to 88 years of age, regarding their reproductive and sociodemographic characteristics. An index of correct utilization was constructed based on the form and frequency practice of those techniques. Results. The prevalence of correct utilization of SE was 11% and 5.4% for CE. Further, 7.6% of women 40-49 years of age with 2 or more BC risk factors had MA during the two years prior to the interview, and for 31.6% among women ≥50 years of age the MA was annually. The main determinant of MA utilization was having financial protection from either IMSS, ISSSTE or Seguro Popular. Conclusions. It is necessary to improve the correct utilization of BC detection techniques in Mexico.

Qualidade de vida em mulheres no climatério atendidas na Atenção Primária / Quality of life of postmenopausal women attended at Primary Health Care / Calidad de vida de las mujeres en climaterio tratadas en la Atención Primaria

A vivência do climatério está cada vez mais presente, e demanda estratégias que melhorem a qualidade de vida das mulheres nesse período. A pesquisa objetivou avaliar a qualidade de vida de mulheres na fase do climatério, com ou sem uso da terapia de reposição hormonal (TRH). Estudo epidemiológico longitudinal, com amostra de 99 mulheres para cada grupo. Avaliaram-se as características sociodemográficas, clínicas e comportamentais. Foram aplicados à amostra a Menopause Rating Scale (MRS) e o Medical Outcomes Study 36-item Short-Form Health Survey (SF-36). Utilizaram-se os testes t de student, Qui-quadrado e Tukey. As usuárias de TRH apresentaram média etária de 50,76 ± 3,63 anos, e as não usuárias de 48,95 ± 6,27anos (p=0,01). Relataram maior frequência de sintomas climatéricos de intensidade leve a moderada. Os aspectos sociais apresentaram escore abaixo de 50 para os dois grupos. Houve diferenças entre os grupos em relação aos componentes do SF-36 e MRS para estado geral de saúde, capacidade funcional, menor capacidade, depressão, insônia e fenômenos vasomotores.

The experience of menopause is increasingly present, and demand strategies to improve the quality of life of women during this period. This research aimed to evaluate the quality of life for women in the climacteric phase, with or without the use of hormone replacement therapy (HRT). This is a longitudinal epidemiological study of a sample of 99 women per group. It was evaluated the sociodemographic, clinical and behavioral characteristics. It was used the Menopause Rating Scale (MRS) and the Medical Outcomes Study 36-item Short-Form Health Survey (SF-36). For data analysis, it was used the Student t test, chi-square and Tukey. HRT users had an average age of 50.76 ± 3.63 years, and nonusers of 48.95 ± 6,27anos (p = 0.01). It was identified a higher frequency of moderate climacteric symptoms of mild intensity. The social aspects evidenced scores below 50 for the two groups. There were differences between groups with respect to the components of the SF-36 and MRS to general health, functional capacity, lower capacity, depression, insomnia and vasomotor phenomena.

La experiencia de la menopausia es cada vez más presente, demandando estrategias para mejorar la calidad de vida de las mujeres durante este periodo. Esa investigación tuvo como objetivo evaluar la calidad de vida de las mujeres en la fase climatérica, con o sin el uso de la terapia de reemplazo hormonal (TRH). Trata-se dé un estudio epidemiológico longitudinal, con una muestra de 99 mujeres por grupo. Fueran evaluadas las características sociodemográficas, clínicas y de comportamiento. Fueran aplicados a la muestra el Menopause Rating Scale (MRS) e el Medical Outcomes Study 36-item Short-Form Health Survey (SF-36). Utilizaran-se los testes t de Student, Qui-quadrado e Tukey. Las usuarias de TRH tenían una edad media de 50,76 ± 3,63 años, y las no usuarias de 48,95 ± 6,27anos (p = 0,01). Fue reportada una mayor frecuencia de síntomas climatéricos intensidad leve o moderada. Los aspectos sociales tuvieran puntuaciones por debajo de 50 para los dos grupos. Hubo diferencias entre los grupos con respecto a los componentes del SF-36 y el MRS para la salud en general, la capacidad funcional, la capacidad más baja, la depresión, el insomnio y los fenómenos vasomotores.

Quimioterapia en adenocarcinoma de colon. comparación entre esquemas folfox 4 vs. 5fu/lv en estadios clínicos II y III / Chemotherapy in colon adenocarcinoma.comparison between schemes FOLFOX 4 vs. 5FU / LV in clinical stages II and III

El cáncer colorrectal es una de las enfermedades oncológicas más frecuentes. Al principio, para los estadios clinicos IIb y IIIa se usaba 5FU/LV de manera adyuvante, con el advenimiento del oxaliplatino se comenzó a utilizar quimioterapia con esquema FOLFOX 4. El objetivo fue conocer si hubo mejoría en la supervivencia de pacientes que recibieron FOLFOX 4 vs. 5FU/LV. Se realizó un estudio de cohorte histórica mediante revisión de historias clínicas de pacientes con diagnóstico histopatológico de adenocarcinoma de colon estadio clínico II y III en el Hospital SOLCA- Quito, entre los años 2000-2013, tratados con esquema de quimioterapia 5FU/LV vs. FOLFOX 4. Se estudiaron 939 pacientes, de los cuales 177 cumplieron los criterios de inclusión, 69 (38%) recibieron esquema 5FU/LV y 108 (62%) recibieron FOLFOX 4. La supervivencia al primer año fue mayor con FOLFOX 4 (89.8%. IC 95%: 84.32-95.68) que con 5FU/LV (81.2%. IC 95%: 73.16 - 88.84). Sin embargo, no existió diferencia estadísticamente significativa entre ambos esquemas con respecto a la supervivencia durante el periodo estudiado a 13 años (3.169, p: 0.0751). En cuanto al riesgo de recaídas en enfermedad, se observó que FOLFOX 4 desarrolla menos riesgo (OR: 1.91. IC 95%: 0.9655-3.7734,p: 0.04367). No existe una ventaja terapéutica significativa en la adición de oxaliplatino al esquema 5FU/LV.

Colorectal cancer is one of the most frequent oncologicaldiseases. Initially for stages IIb -IIIa was used 5FU/LV asadjuvant way; with the advent of oxilaplatin began usingchemotherapy with FOLFOX 4 scheme. The objective wasto know if there was improvement in survival of patientswho received FOLFOX 4 vs. 5FU/LV. A historical cohort studywas conducted by reviewing medical records of patientswith histopathological diagnosis of colon adenocarcinomaclinical stage II and III at SOLCA Hospital - Quito, treatedwith scheme 5FU/LV vs. FOLFOX 4 chemotherapy betweenthe years 2000-2013. We studied 939 patients, of whom177 were included in the study, 69 (38%) received 5FU/LV and 108 (62%) received FOLFOX 4 scheme. Survivalto first year was higher with FOLFOX 4 (89.8%. CI 95%:84.32-95.68) than 5FU/LV. There is no statistically significantdifference between the two schemes with respect totheir survival during of 13 years periods studied (3.169, p:0.0751). However, with the diseases relapses, FOLFOX 4was better than 5FU/LV protocol and the patients developless relapses (OR: 1.91. CI 95%: 0.9655-3.7734, p: 0.04367).There is not a significant therapeutic benefit of addingoxaliplatin to 5FU/LV.

Folates retention in brassica vegetables consumed in Brazil after different cooking methods / Retención de folatos en hortalizas consumidas en Brasil después de diferentes métodos de cocción

The present study aimed to determine the effects of different traditional cooking methods on folate (tetrahydrofolate - THF, 5-methyltetrahydrofolate - 5- MTHF and 5-formyltetrahydrofolate - 5-FTHF) retention in leafy vegetables. The analysis of folates was carried out by high performance liquid chromatography (HPLC), with detection by fluorescence, using gradient elution, mobile phase of acetonitrile and phosphate buffer solution. The retention of isomers in vegetables after cooking ranged from 17.0 % to 87.2 % for THF, 53.4 - 94.1% for 5-MTHF and 39.0 - 107.9% for 5-FTHF. The retention of folates depended on the food matrix, the kind of isomer, and the cooking methods used. It is recommended that one should have more control over the choices for methods and time of cooking and the amount of water used at home and at foodservice as well.

El presente estudio tuvo como objetivo determinar los efectos de los diferentes métodos de cocción tradicionales sobre la retención de folatos (tetrahidrofolato - THF, 5-metiltetrahidrofolato - 5- MTHF y 5-formiltetrahidrofolato - 5 FTHF) en hortalizas. El análisis de folatos se llevó a cabo por cromatografía líquida de alta resolución (CLAR), con detección por fluorescencia, usando elución en gradiente, fase móvil de acetonitrilo y solución tampón de fosfato. La retención de los isómeros en las hortalizas después de la cocción varió de 17,0% a 87,2% para THF, 53,4 a 94,1% para 5-MTHF y de 39,0 a 107,9% para 5- FTHF. La retención de folatos dependió de la matriz del alimento, el tipo de isómero, y los métodos de cocción utilizados. Se recomienda que uno debe tener más control sobre las opciones de métodos y tiempo de cocción y la cantidad de agua utilizada en el hogar y también en los servicio de alimentación.

Radioquimioterapia adyuvante en cáncer gástrico completamente resecado: experiencia del Instituto Nacional del Cáncer de Chile / Adjuvant chemoradiotherapy in advanced gastric cancer: Experience in 168 patients

Background: Gastric cancer is one of the most lethal tumors in the Chilean population. Aim: To report the results of adjuvant chemoradiotherapy in advanced gastric cancer. Material and Methods: Review of medical records of patients with locoregionally advanced gastric cancer, subjected to a curative resection and treated with adjuvant chemoradiotherapy. The treatment was based on the INT 0116/SWOG protocol, which includes 5-fuorouracil as a single agent. Patients were followed for a median of 58 months. Results: the records of 168 patients (99 men) treated between 2004 and 2011, were reviewed. Median survival was 41 months. Median lapses between surgery and onset of chemo and radiotherapy were 12 and 17 weeks, respectively. Overall three and five years survival was 53 and 41%, respectively. On multivariate analysis the factors associated with a lower survival were an antral location of the tumor, presence of signet ring cells and more than 15 involved lymph nodes. Conclusions: Three and five years survival of gastric cancer patients subjected to adjuvant chemoradiotherapy was 53 and 41% respectively. These results are similar to those reported elsewhere.

Falla de la profilaxis con cotrimoxazol para la neumonía por Pneumocystis jiroveci con el uso concomitante de leucovorina: Reporte de un caso / Failure of cotrimoxazole prophylaxis for Pneumocystis jiroveci pneumonia with concomitant use of leucovorin: Case report

The concomitant use of leucovorin and cotrimoxazole in PCP can lead to therapeutic failure and increased risk of death due to antagonism. It is important to keep this possible antagonistic interaction in mind even during prophylaxis. This paper presents a case with this failure outcome.

Nephrotic syndrome associated with toxoplasmosis: report of seven cases / Síndrome nefrótica associada à toxoplasmose: relato de sete casos

The concomitance of nephrotic syndrome and acute infection by Toxoplasma gondii is a rare occurrence in humans. In this paper seven cases of children, ranging from 11 months to 7 year-old, with concomitant nephrotic syndrome and asymptomatic acute T. gondii infection are reported. In one of those patients only the administration of anti-Toxoplasma therapy was enough to control the clinical and laboratory manifestations of the disease. In the other patients it was necessary to introduce corticosteroids or other immunosuppressant drugs. Three patients had complete clinical and laboratory improvement and the remaining showed only a partial response.

Ocorrência concomitante de síndrome nefrótica e infecção aguda por Toxoplasma gondii em seres humanos é situação pouco frequente. No presente trabalho são relatados sete casos de crianças, com idade variável entre 11 meses e sete anos, que apresentavam síndrome nefrótica e infecção aguda por T. gondii assintomática. Em um dos pacientes o tratamento específico anti-Toxoplasma foi suficiente para controlar clínica e laboratorialmente as manifestações da doença. Nos demais foi preciso administrar corticosteróides ou outras drogas imunossupressoras. Após introdução desse esquema três pacientes apresentaram remissão completa dos sintomas; os demais apenas remissão parcial.

Functional impairment in submandibular gland of rats induced by 5-fluorouracil and calcium leucovorin

One of the main clinical problems during chemotherapy is the occurrence of severe systemic toxicities, including those related to the stomatognathic system, which contribute to reducing the patient's quality of life. The most frequent oral complications are mucositis, dysgeusia, inflammation, gingival bleeding and decreased salivary flow or hyposalivation, a factor that predisposes to xerostomia, and other local complications that alter the homeostasis of the system. The purpose of this study was to evaluate the functional activity of salivary glands in Wistar rats subject to chemotherapy by measuring salivary flow, glycogen levels and glandular tissue response to autonomic nervous system agonists. Five experimental groups were used: 1) Control group fed "ad libitum"; 2) 5-fluorouracil (20mg/ kg body weight); 3) Calcium leucovorin (10 mg/kg body weight); 4) 5-fluorouracil + calcium leucovorin (20 and 10 mg / kg, respectively) by intraperitoneal injection for five consecutive days and 5) control with paired diet. Groups 1 and 5 did not receive drugs. Treatment with fluorouracil + leucovorin produced an increase in stimulated salivary flow and a higher response to increasing doses of beta agonists compared to other experimental groups. In both groups treated with cytostatic drugs, blocking of glycogen consumption at the end of the experimental period was observed. Our work suggests that salivary secretion may be affected by a dual mechanism: the first would be toxicity induced by 5-FU, which would cause depression of the process of glucose utilization. The second mechanism would affect the sympathetic autonomic reflex arc. In this instance, the synergistic action of 5-FU + LV would have a negative effect on the nerve activity with a reduction of salivary secretion. This would explain the hyposalivation, cited by several authors in patients undergoing the 5-FU+LV scheme in the treatment of colon carcinoma.

Uno de los principales problemas clinicos durante la quimioterapia es la aparicion de graves efectos toxicos sistemicos, incluidos los relacionados con el sistema estomatognatico, que contribuyen a la reduccion de la calidad de vida del paciente. Las complicaciones orales mas frecuentes son la mucositis, disgeusia, inflamacion, sangrado gingival y la disminucion del flujo salival o hiposalivacion, un factor que predispone a la xerostomia, y otras complicaciones locales que alteran la homeostasis del sistema. El objetivo de este estudio fue evaluar la actividad funcional de las glandulas salivales de ratas Wistar sometidas a quimioterapia, a traves de la medicion del flujo salival, los niveles de glucogeno y la respuesta del tejido glandular a agonistas del sistema nervioso autonomo. Se utilizaron cinco grupos experimentales: 1) Control con alimentacion "ad libitum"; 2) 5 - fluorouracilo (20 mg / kg de peso corporal); 3) Leucovorina calcica (10 mg/ kg de peso corporal); 4) 5 - fluorouracilo + leucovorina calcica (20 y 10 mg / kg, respectivamente) por via intraperitoneal durante cinco dias consecutivos, y 5) control con dieta apareada. Grupos 1 y 5 no recibieron drogas. El tratamiento con 5 - fluorouracilo + leucovorina produjo un aumento de flujo salival estimulado y una mayor respuesta a dosis crecientes de agonistas beta en comparacion con otros grupos experimentales. En ambos grupos tratados con citostaticos, se observo bloqueo del consumo de glucogeno al final del periodo. Nuestro trabajo sugiere que la secrecion salival puede estar afectada por un doble mecanismo: el primero seria la toxicidad inducida por 5-FU que causaria depresion del proceso de utilizacion de la glucosa. El segundo mecanismo afectaria el arco reflejo autonomo simpatico. En este caso, la accion sinergica de ambos farmacos de 5-FU + LV repercutiria negativamente sobre la actividad nerviosa con una reduccion de la secrecion salival. Esto explicaria la hiposalivacion citada por varios autores en pacientes sometidos al esquema 5-FU + LV en el tratamiento del carcinoma colorrectal.

Consideraciones sobre respuesta clínica completa en el cáncer de recto luego de quimioradioterapia neoadyuvante / Considerations about complete clinical response in rectal cancer after neoadyuvant chemotherapy

Luego de la quimioradioterapia neoadyuvante un porcentaje de adenocarcinomas de recto bajo localmente avanzados presentarán remisión total de la lesión, a esto se lo conoce como Respuesta Clínica Completa; en estos casos la cirugía puede ser innecesaria. Nuestro grupo desde principios de los noventa ha incluído estos pacientes en un protocolo estricto de seguimiento que ha demostrado ser igual de seguro que el tratamiento convencional, sin las morbilidades de la cirugía radical. El presente reporte tiene por objeto definir lo que consideramos una Respuesta Clínica Completa, analizar sus implicancias y presentar nuestra experiencia en el manejo de este acontecimmiento.

After neoadjuvant chemoradiation, some patients with locally advanced low rectal adenocarcinoma will present with total tumor regression, this situation is known as Complete Clinical Response (CCR). In this setting immediate radical surgery could be unnecessary. Since the early nineties, our group has included this patients in a striet follow-up protocol, wich has proven to be oncologically equally safe as conventional treatment, without the morbidities of radical surgery. The objective of this report is to define what we consider a CCR and to present our experience in the management of this clinical situation.

Survival of a cohort of patients with Intermediate and advanced gall bladder cancer treated with a prospective therapeutic protocol / Sobrevida de uma coorte de pacientes com câncer na vesícula intermédio e avançado tratados com um protocolo terapêutico de natureza prospectiva

PURPOSE: To evaluate the results of a prospective therapeutic protocol with long-term follow up in terms of survival rates in a cohort of patients treated with Intermediate and Advanced GBC (GBC). METHODS: Prospective cohort of patients with intermediate and advanced stages of GBC treated between 1996 and 2006. All cases were treated with a partial hepatic segmentectomy on segments IVb and V and a regional lymph node dissection and six cycles of out-patient chemotherapy (5-FU and leukovorin). With an average follow-up of 31.5 months, the morbidity, operative mortality, hepatic and lymphatic infiltration and actuarial survival were measured. Descriptive statistics were applied as well as bivariate analysis applying Fisher's exact test and non-parametrical tests and Kaplan Meier survival curves. Also logistic regression and proportional risk of Cox were applied. RESULTS: 40 patients were included in this protocol, with an average age of 59.5 years (40-85 years), of which 28 were women (70 percent). Depth of wall infiltration: muscular 8 patients (20 percent), subserosal 12 patients (30 percent), serosal 12 patients (30 percent) and perivesicular adipose tissue 8 patients (20 percent). The series morbidity was 27.5 percent. There was no operative mortality. The chemotherapy was well tolerated. The overall actuarial survival in the series was 50 percent at 60 months. CONCLUSION: Our protocol treatment has morbidity, mortality and survival rates similar to previously reported series.

OBJETIVO: Avaliar os resultados de resultados da aplicação de um protocolo terapêutico de natureza prospectiva, com seguimento em longo prazo nos termos de taxas de sobrevivência em uma coorte de pacientes operados com carcinoma vesícula biliar (CVB) intermédio e avançado. MÉTODOS: A coorte prospectiva de pacientes com estágios intermediários e avançados de CVB tratados entre 1996 e 2006. Todos os casos foram tratados com uma segmentectomia hepática parcial em segmentos IVb e V e uma dissecção linfonodal regional e seis ciclos de quimioterapia de ambulatório (5-FU e leukovorin). Com um tempo de seguimento médio de 31,5 meses, a morbidade, mortalidade operatória, hepático e infiltração linfática e atuarial de sobrevida foram medidas. Estatísticas descritivas foram aplicadas, bem como análise bivariada aplicando o teste exato de Fisher, testes não-paramétricos, curvas de sobrevida Kaplan Meier e técnica de regressão logística e risco proporcional de Cox. RESULTADOS: Foram incluídos 40 pacientes neste protocolo, com uma média de idade de 59,5 anos (40-85 anos), dos quais 28 eram mulheres (70 por cento). Profundidade de infiltração parede: muscular 8 pacientes (20 por cento), subserosal 12 pacientes (30 por cento), serosas 12 pacientes (30 por cento) e perivesicular no tecido adiposo, 8 pacientes (20 por cento). A série morbidade foi de 27,5 por cento. Não houve mortalidade operatória. A quimioterapia foi bem tolerada. A sobrevida global atuarial da série foi de 50 por cento em 60 meses. CONCLUSÃO: Nosso protocolo tem tratamento morbidade, mortalidade e taxas de sobrevivência semelhantes às relatadas anteriormente série.

Tratamiento con radioterapia y quimioterapia: en pacientes con carcinoma de recto 10 años de evaluación / Treatment with radiotherapy and chemotherapy in patients with rectal carcinoma 10 years of evaluation

Analizar el resultado del tratamiento con radioterapia y quimioterapia con carcinoma rectal evaluando tolerancia, toxicidad, patrón de recurrencia y sobrevida. Se incluyeron 50 pacientes con carcinoma de recto. De ellos 33 recibieron tratamiento posoperatorio y 17 preoperatorio. El 64 por ciento recibió radioterapia a pelvis, 4500- 5540 cGy con fracciones de 180 cGy diarios durante 5-6 semanas concurrente con 5-Fluorouracilo 225 mg/m² en infusión contínua y 36 por ciento 5-Fluorouracilo en bolus con bajas dosis de leucovorina por 5 días consecutivos la primera y la cuarta semana de radioterapia. Las toxicidades grado 3 y 4 más fecuentes con 5-Fluorouracilo en infusión continua concurrente con radioterapia fueron diarrea y enteritis; en los tratados con 5-Fluorouracilo en bolus y leucovorina concurrente con radioterapia fueron diarrea, radiodermatitis y neutropenia. No hubo muertes asociadas al tratamiento. La mayoría de los pacientes eran estadio III. Al 60 por ciento se les realizó una resección anterior de recto. El porcentaje de recaídas locales fue 12 por ciento y a distancia 24 por ciento. Para el momento del análisis el 42 por ciento de los pacientes se encontraban vivos sin enfermedad. Las toxicidades más frecuentes fueron diarrea y enteritis. Se observó mayor toxicidad hematológica (neutropenia grado 3) en el grupo que recibió 5-Fluorouracilo en bolus más leucovorina. La recurrencia local fue similar a la presentada en la literatura con regímenes del tratamiento similares. La principal causa de falla del tratamiento fue la recaída a distancia.

To analyze the results of concurrent radiotherapy and chemotherapy in patients with rectal cancer, and evaluating the treatment tolerance, recurrence pattern, toxicity and survival. 50 patients with rectal carcinoma were included. 33 were treated postoperatively and 17 preoperatively. The 64 % received radiotherapy to the pelvis, 4500-5540 cGy for 5 to 6 weeks with daily 180 cGy fractions concurrent with 5-Fluorouracil 225 mg/m2 by protracted infusion and 36 % of them received radiotherapy concurrent with bolus 5-Fluorouracil with low dose leucovorin for 5 consecutive days, the first and fourth week of radiotherapy. The most frequent grade 3 and 4 toxicities with protracted infusion of 5-Fluorouracil were diarrhea and enteritis; in patients treated with bolus 5-Fluorouracil and low dose leucovorin diarrhea, radio dermatitis and neutropenia were seen. There were no toxic deaths associated with treatment. The majority of patients had stage III disease. The 60 % of patients underwent anterior rectal resection. The rate of local recurrence was 12 % and distant metastasis 24 %. At the time of the study analysis 42 % of the patients were alive without disease. The most common toxicities were diarrhea and enteritis. We observed more hematological toxicity (grade 3 neutropenia) in the group of patients treated with bolus 5-Fluorouracil and leucovorin. The rate of local recurrence was similar to the published data with the same regimens of treatment and the main cause of treatment failure was distant metastasis.

Paliative chemotherapy based in etoposide Leucovorin and 5 Fluorouracil (ELF) using leucovorin in low dose in the treatment of patients with advanced gastric cancer

A great percentage of diagnosed gastric cancer cases are encountered in advanced stages with distant metastases. In these cases, the standard treatment is palliative chemotherapy. In the ELF chemotherapy regime, the dose of leucovorin (Lv) varies from 300 to 500mg/m2. However, there are no studies that demonstrate therapeutic equivalence between high and low doses of Lv. OBJECTIVE: Retrospectively analyze the response rates and toxicity profile of the ELF scheme with low doses of Lv offered to patients with metastatic gastric cancer. MATTERS AND METHODS: Evaluated were patients treated with etoposide (120mg/m2/day), Lv (20mg/m2/day) and 5-fluorouracil (500mg/m2/day), D1 and D3 cycles repeated every three weeks. RESULTS: Sixty-eight patients were treated, 69% men, with median age of 60.24 years. Occurred six complete responses (8.8%), five partial responses (7.4%) and 38.2% of the patients presented stable disease. The median overall survival was 9.15 months (IC95%, 6.06-12.95), while patients with overall response was 16.05 months (IC95%, 10.48-21.63) and in those that presented stable disease or progression was 9.01 months (IC95%, 4.71-13.31; p=0.669). Grade III and IV low frequency toxicity was observed. CONCLUSIONS: In the present sample, the ELF regime with low-dose leucovorin presented an excellent toxicity profile. In spite of the low response rate, the respondent patients presented an equivalent overall survival to the other regimens of the literature.

Low-cost outpatient chemotherapy regimen of cisplatin, 5-fluorouracil and leucovorin for advanced head and neck and esophageal carcinomas

CONTEXT AND OBJECTIVE: Patients with advanced head and neck (H/N) and esophageal squamous cell carcinoma (SCC) often have a poor performance status and a dire prognosis. Our aim was to evaluate the feasibility, activity and quality of life (QOL) of an outpatient chemotherapy regimen consisting of cisplatin, 5-fluorouracil and leucovorin (CFL). DESIGN AND SETTING: Prospective phase II study conducted at a Brazilian public institution. METHODS: Fifteen patients with residual, recurrent or metastatic SCC of the H/N or esophagus received bolus infusions of leucovorin 20 mg/m²/day and 5-fluorouracil 370 mg/m²/day on days 1-4, and 90 minutes of infusion of cisplatin 25 mg/m²/day on days 1-3, every 21 to 28 days, depending on hematological recovery. We also evaluated QOL by applying the European Organization for Research and Treatment of Cancer Quality of Life-C30 questionnaire (EORTC QLQ-C30) before each cycle. RESULTS: The overall response rate was 36 percent, and the mean overall survival and progression-free survival were six and three months, respectively. We observed grade 3 or higher hematological toxicity in seven patients and one patient had grade 3 nausea and vomiting. One patient died because of neutropenic fever. Seven out of the 12 patients who could be evaluated regarding QOL presented an improvement in their overall health status and functional QOL scores over the course of the treatment. CONCLUSIONS: CFL is an active outpatient protocol with tolerable toxicity and a favorable QOL impact. Larger studies are warranted, in order to confirm these results.

CONTEXTO E OBJETIVO: Pacientes com carcinoma espinocelular (CEC) de cabeça e pescoço e esôfago frequentemente tem um baixo Karnofsky Performance Status (KPS) e um prognóstico ruim. Nosso objetivo foi avaliar eficácia, taxa de resposta e qualidade de vida nesse contexto, em pacientes tratados com o regime ambulatorial cisplatina, 5-fluoruracil e leucovorin (CFL). TIPO DE ESTUDO: Estudo prospectivo fase II conduzido em uma instituição pública brasileira. MÉTODOS: 15 pacientes com CEC de cabeça e pescoço e esôfago persistente, recorrente ou metastático receberam leucovorin 20 mg/m²/dia, in bolus seguido de 5-fluoruracil 370 mg/m²/dia, in bolus nos dias 1 a 4 e cisplatina 25 mg/m²/dia em infusão de 90 minutos nos dias 1 a 3 a cada 21 ou 28 dias, dependendo da recuperação hematológica. Qualidade de vida foi analisada utilizando o questionário EORTC QLQ-C30, aplicado antes de cada ciclo. RESULTADOS: A taxa de resposta objetiva foi de 36 por cento e a sobrevida global e a sobrevida livre de progressão médias foram de 6,7 e 3,7 meses, respectivamente. Toxicidade hematológica maior ou igual a grau 3 foi observada em sete pacientes e um paciente apresentou náusea e vômito grau 3. Um paciente foi a óbito por neutropenia febril. Sete de 12 pacientes avaliáveis apresentaram melhora no estado geral de saúde e oito nas escalas funcional e sintomática com o tratamento. CONCLUSÃO: CFL é um protocolo ambulatorial factível, com toxicidade aceitável e com impacto favorável na qualidade de vida. Estudos maiores devem ser realizados para confirmar estes resultados.

A comparison of vitamin A and leucovorin for the prevention of methotrexate-induced micronuclei production in rat bone marrow

INTRODUCTION: Methotrexate, a folate antagonist, is a mainstay treatment for childhood acute lymphoblastic leukemia. It is also widely used in a low dose formulation to treat patients with rheumatoid arthritis. In rats, methotrexate is known to induce micronuclei formation, leading to genetic damage, while vitamin A is known to protect against such methotrexate-induced genetic damage. Leucovorin (folinic acid) is generally administered with methotrexate to decrease methotrexate-induced toxicity. OBJECTIVES: We aimed to determine whether vitamin A and leucovorin differed in their capacity to prevent formation of methotrexate-induced micronuclei in rat bone marrow erythrocytes. The present study also aimed to evaluate the effect of combined treatment with vitamin A and leucovorin on the formation of methotrexate-induced micronuclei. METHODS: Male and female Wistar rats (n=8) were injected with 20 mg/kg methotrexate (single i.p. dose). The control group received an equal volume of distilled water. The third and fourth groups of rats received vitamin A (5000 IU daily dose for 4 successive days) and leucovorin (0.5 mg/kg i.p. dose for 4 successive days), respectively. The fifth and sixth groups of rats received a combination of vitamin A and a single dose of methotrexate and a combination of leucovorin and methotrexate, respectively. The last group of rats received a combination of leucovorin, vitamin A and single dose of methotrexate. Samples were collected at 24 hours after the last dose of the treatment into 5 percent bovine albumin. Smears were obtained and stained with May-Grunwald and Giemsa. One thousand polychromatic erythrocytes were counted per animal for the presence of micronuclei and the percentage of polychromatic erythrocyte was determined. RESULTS: Comparison of methotrexate-treated rats with the control group showed a significant increase in the percentage of cells with micronuclei and a significant decrease polychromatic...