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1.
Article in Spanish | LILACS | ID: biblio-1411823

ABSTRACT

La presentación de un evento traumático único o sistemático en la infancia, puede afectar el curso normal del desarrollo psíquico del infante en sus etapas evolutivas si no es abordado oportuna y adecuadamente. Métodos: Se realizó una búsqueda de artículos, de los últimos 5 años, que abordasen el efecto de la Terapia Cognitivo Conductual Centrada en el Trauma (TCC-CT) en niños y adolescentes. Resultados: Las experiencias de trauma en la primera infancia son un problema real y no infrecuentes, con efecto sobre varios dominios del desarrollo y salud del infante, por ello, es de gran importancia un tratamiento oportuno basado en la evidencia. Esta terapia es un tratamiento efectivo y ampliamente utilizado para abordar el trauma infantil. Discusión: Los artículos revisados, respaldan la TCCCT como un tratamiento efectivo y ampliamente utilizado para abordar el trauma infantil, con vasta evidencia.


The presentation of a single or systematic traumatic event in childhood can affect the normal course of the infant's psychic development in its evolutionary stages if it is not approached in a timely and adequate manner. Methods. A search was carried out for articles, from the last 5 years, that addressed the effect of Trauma-Focused Cognitive Behavioral Therapy (CBT-CT) in children and adolescents. Results. The experiences of trauma in early childhood are a real problem and not infrequent, with an effect on several domains of development and health of the infant, therefore, the great importance of a timely treatment based on evidence. This therapy is an effective and widely used treatment to address childhood trauma. Discussion. The revised articles support CBT-CT as an effective and used treatment to address childhood trauma, with ample evidence.


Subject(s)
Humans , Male , Female , Child , Adolescent , Stress Disorders, Post-Traumatic/therapy , Cognitive Behavioral Therapy/methods , Psychological Trauma/therapy , Stress Disorders, Post-Traumatic/psychology
2.
Gastroenterol. latinoam ; 27(2): 106-113, 2016. tab
Article in Spanish | LILACS | ID: biblio-907622

ABSTRACT

Hepatocellular carcinoma (HCC) is one of the most common tumors worldwide. Most cases occur in patients with chronic liver disease who are diagnosed at an advanced stage, and their prognosis is poor. Because HCC is resistant to conventional systemic therapies, molecular therapies have emerged and been established as the standard for advanced forms of the disease. Since the publication of phase III clinical studies on sorafenib, research has searched for new molecular targets. Thus, multiple clinical studies that inhibit relevant molecular pathways have been performed with numerous patients. Many of these trials have had unexpectedly negative results, not only due to patient complexity and the difficulty in evaluating a therapeutic response, quality of life and the survival rate but also because phase II clinical studies, without the selection of molecular targets, have continued on to poor results in phase III studies. This review article aims to evaluate different phase II and phase III clinical studies to understand the clinically relevant molecular pathways and to improve the future management of HCC patients.


El carcinoma hepatocelular (CHC) es uno de los tumores más comunes a nivel mundial. La mayoría de los casos ocurre en pacientes con enfermedad hepática crónica, quienes son diagnosticados en un estado avanzado con muy pobre pronóstico. Terapias moleculares orientadas al tratamiento del CHC han sido destacadas; estas pueden afectar la proliferación celular del tumor, diferenciación celular, angiogénesis, invasión y metástasis, entre otros procesos críticos al desarrollo del tumor. El estándar para el CHC avanzado es la terapia target usando Sorafenib, sin embargo, nuevas moléculas han sido testeadas en estudios fase III de primera línea, tales como sunitinib, brivanib, erlotinib y linifanib, sin superioridad sobre sorafenib. La investigación de nuevos tratamientos es un desafío para investigadores, hepatólogos y oncólogos. Las principales vías moleculares de CHC con relevancia en estudios clínicos fase II y III son: MAP-kinase (MAPK), PI3K/AKT/mTOR, (HGF)/c-Met, cromatina y regulación epigenética, mantenimiento de telómeros, Notch, Hedgehog, Hippo y vía señalizante Jak/STAT. Las terapias futuras en CHC pueden ser orientadas rutinariamente usando sólo objetivos adecuados para terapias moleculares y seleccionando subgrupos de pacientes sobre la base de la expresión de targets moleculares o basados en nuevas clasificaciones definidas por estudios genómicos.


Subject(s)
Humans , Carcinoma, Hepatocellular/drug therapy , Liver Neoplasms/drug therapy , Phenylurea Compounds/therapeutic use , Protein Kinase Inhibitors/therapeutic use , Disease Progression , Niacinamide/analogs & derivatives , Survival Analysis
3.
Rev. chil. dermatol ; 30(2): 184-188, 2014. ilus
Article in Spanish | LILACS | ID: biblio-835941

ABSTRACT

El Sarcoma de Kaposi (SK) es un tumor vascular que puede comprometer la piel. En 1872 el dermatólogo vienés Moritz Kaposi describió por primera esta entidad. Tradicionalmente se la ha considerado un proceso crónico, decurso lento, que afecta sobre todo a hombres ancianos del este de Europa. No recibió mayor atención hasta que apareció como epidemia en hombres que tienen sexo con hombres (HSH) en la década de los 80 y fue reconocido como marcador clínico de SIDA. Describimos nuestra experiencia en la Unidad de Atención y Control en Salud Sexual (UNACESS) de dos varones PPVI: uno con lesión en cara mucosa del prepucio y otro con lesiones palatinas.


Kaposi’s Sarcoma (KS) is a vascular tumor that can involve the skin. In 1872 the Viennese dermatologist Moritz Kaposi first described this entity. Traditionally it has been considered a chronic, slow flowing, mainly affecting elderly men of Eastern Europe. KS received no more attention until it appeared as an epidemic among men who have sex with men (MSM) in the 80s and was recognized as a clinical marker of AIDS. We describe our experience in Care and Control Unit Sexual Health (UNACESS) in two men living with VIH infection, one with penile mucosa injury and another with palatal lesions.


Subject(s)
Humans , Male , Adult , Mucous Membrane/injuries , Sarcoma, Kaposi/pathology , Acquired Immunodeficiency Syndrome/pathology , HIV Infections/pathology , Palatal Neoplasms/pathology , Penile Neoplasms/pathology , Sarcoma, Kaposi/therapy
4.
Rev. chil. urol ; 78(2): 57-60, ago. 2013. graf, tab
Article in Spanish | LILACS | ID: lil-774057

ABSTRACT

Introducción: El Cáncer de Próstata (CaP) es uno de los principales problemas de salud en los países desarrollados. El CaP diagnosticado después de la cirugía prostática por patología benigna, se denomina incidental y oscila entre 4 por ciento y 15 por ciento. Corresponde al estadio T1a y T1b según clasificación TNM. Objetivos: Describir las características clínicas e histológicas y el manejo del Cáncer de próstata T1a y T1b diagnosticados en nuestro servicio. Material y Método: Análisis descriptivo retrospectivo de 2835 pacientes con adenoma prostático entre el año 2002 y 2012, cuyas biopsias post-cirugía fueron positivas para cáncer (63 pacientes). El análisis estadístico se realiza con test de Fisher, T-test y X2. Resultados: La edad promedio fue 72 años. PSA promedio fue 10,6 ng/dl, siendo el 50 por ciento de tamaño grado 3-4. En promedio el volumen prostático fue 79gr con un tamaño tumoral de 5,5gr y compromiso tumoral del 40 por ciento (T1a 7 por ciento y T1b 93 por ciento). 75 por ciento presento Gleason 5-7. El número de focos (+) fue mayoritariamente 1 o 2 (89 por ciento). Presentó márgenes (+) un 23 por ciento. El tratamiento posterior fue principalmente hormonoterapia (39 por ciento). Al comparar PSA, Gleason y tacto rectal entre sí y con las otras variables no se encontraron diferencias estadísticas significativas. Conclusiones: Los tumores T1a-T1b en nuestro servicio equivalen al 2,2 por ciento, menor a otras series publicadas. El no existir asociación estadística entre las variables lo atribuimos a un bajo “n” muestral. El cáncer incidental de próstata no es frecuente y la adecuada selección de los pacientes sometidos a biopsias, disminuye su incidencia.


Introduction: Prostate cancer (PCa) is a major health problem in developed countries. The PCa diagnosed after surgery for benign prostate, called incidental and ranges between 4 percent and 15 percent. Corresponds to stage T1a and T1b as TNM classification. Objectives: To describe the clinical and histological features and management of prostate cancer diagnosed in T1a and T1b our service. Methods: retrospective analysis of 2835 patients with prostatic adenoma between 2002 and 2012, whose post-surgery biopsies were positive for cancer (63 patients). Statistical analysis was performed with Fisher test, T-test and X2.Results: Mean age was 72 years. Average PSA was 10.6 ng / dl, with 50 percent grade 3-4. On average prostate volume was 79gr with a tumor size of 5.5 g and 40 percent tumor involvement (T1a 7 percent and T1b 93 percent). 75 percent showed Gleason 5-7. The number of foci (+) was mostly 1 or 2 (89 percent). Presented margins (+) 23 percent. The subsequent treatment was primarily hormonotherapy (39 percent). Comparing PSA, Gleason and DRE among themselves and with the other variables were not statistically different. Conclusions: T1a-T1b tumors in our service equal to 2.2 percent, lower than other published series. The absence of statistical association between the variables we attribute to a low “n” sample. Incidental prostate cancer is not a common and appropriate selection of patients undergoing biopsy, reduces its incidence.


Subject(s)
Humans , Male , Middle Aged , Aged, 80 and over , Prostatic Neoplasms/epidemiology , Prostatic Neoplasms/pathology , Retrospective Studies , Risk Factors , Incidental Findings , Prostatic Hyperplasia/pathology , Prostatic Neoplasms/surgery
5.
Rev. méd. Chile ; 141(5): 669-673, mayo 2013. ilus
Article in Spanish | LILACS | ID: lil-684376

ABSTRACT

Our laboratory has implemented an in vitro assay to estimate the response to chemotherapy in ovarian cancer cells pertaining to individual patients. In two selected patients, we determined the correlation between an in vitro assay of cells from suspected ovarian cancer ascites, with the clinical chemotherapy response. Cancer cells isolated from peritoneal fluid with suspected ovarian cancer were tested for cytotoxicity with corresponding chemotherapy regimens. Circulating Cal25 levels and attending physician consultation determined clinical course and response to chemotherapy. The in vitro assay result correlated with Cal25 levels, progression free survival and attending physician evaluation. The assay predicted correctly the failure of two successive chemotherapy regimes in the first patient, while predicting a favorable clinical response in the second subject.


Subject(s)
Adult , Female , Humans , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Ovarian Neoplasms/drug therapy , Antineoplastic Combined Chemotherapy Protocols/adverse effects , /analysis , Disease-Free Survival , Precision Medicine , Ovarian Neoplasms/blood , Remission Induction , Tumor Cells, Cultured , Biomarkers, Tumor/analysis
6.
Rev. chil. urol ; 78(1): 32-34, 2013. tab
Article in Spanish | LILACS | ID: lil-774004

ABSTRACT

Introducción: El cáncer vesical es el noveno cáncer más común a nivel mundial. La finalidad de la RTUv en los tumores Ta y T1 es hacer un diagnóstico completo y correcto, y una resección terapéutica. Objetivo: Determinar el porcentaje de muestras con tejido muscular de las RTUv. Materiales y métodos: Estudio retrospectivo, longitudinal y descriptivo. Incluidos todos los informes del Servicio de Anatomía Patológica del HPSB desde el 2001 hasta Julio de 2012, informados como muestra de vejiga o cáncer vesical. Resultados: 122 casos cumplieron todos los criterios. 87.7 por ciento presentaban tejido muscular. De las muestras con diagnóstico de cáncer, 28.6 por ciento presentaban in¬ ltración, 32.4 por ciento eran de alto grado y 67.6 por ciento de bajo grado. Conclusión: cerca del 88 por ciento de las RTUv que se han realizado en los últimos 10 años en nuestra unidad y que están indicadas por el diagnóstico o sospecha de cáncer vesical, tienen tejido muscular y por lo tanto están correctamente realizadas.


Introduction: Bladder cancer is the ninth most common cancer worldwide. The purpose of TURB in Ta and T1 stage tumors is to make a complete and accurate diagnosis, and therapeutic resection. Objective: To determine the percentage of samples with muscle tissue of TURB. Materials and Methods: Retrospective, longitudinal and descriptive study. Including all Service reports HPSB Pathology from 2001 until July 2012, reported as a bladder sample or bladder cancer. Results: 122 cases met all the criteria. 87.7 percent had muscle tissue. Of the samples with cancer diagnosis, 28.6 percent had infiltration, 32.4 percent were high grade and 67.6 percent low grade. Conclusion: About 88 percent of the TURB that have been made in the last 10 years in our unit and are indicated by the diagnosis or suspected bladder cancer have muscle tissue and therefore were made correctly.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Cystectomy/methods , Urinary Bladder Neoplasms/surgery , Urinary Bladder Neoplasms/pathology , Retrospective Studies , Urethra
7.
Rev. méd. Chile ; 137(8): 1054-1060, ago. 2009. tab
Article in Spanish | LILACS | ID: lil-531997

ABSTRACT

Hematopoietic precursors transplantation is a therapeutic alternative for leukemia, some metabolic diseases and some immune deficiency syndromes. In its allogeneic variety leukemia eradication is based in the conditioning prior to transplantation and the allograñ effect against leukemia. Umbilical cord blood is an alternative source of hematopoietic precursors when there are no HLA compatible relatives available. Between 2003 and 2007 we have performed five umbilical cord blood transplant in adult patients in a University hospital. All patients had malignant diseases. Conditioning protocols were ablative in all except in one patient and in all, more than one unit of umbilical cord blood was used. Hematopoietic engraftment was confirmed in all patients and the main complications registered were infectious and associated to immunosuppression.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Middle Aged , Young Adult , Cord Blood Stem Cell Transplantation/adverse effects , Hematopoietic Stem Cell Transplantation/adverse effects , Leukemia, Myeloid/surgery , Chile , Fatal Outcome , Remission Induction , Transplantation Conditioning , Young Adult
8.
Rev. chil. infectol ; 26(3): 212-219, jun. 2009. tab
Article in Spanish | LILACS | ID: lil-518456

ABSTRACT

Introduction: Invasive fungal disease (IFD) is a severe complication occurring mostly in haemato-oncological (H-O) patients and hematopoietic stem cell transplant (HSCT) receptors. Our aim was to describe the IFD occurring in our H-O and HSCT patients according to the EORTC/MSG revised criteria. Patients and Methods: IFD surveillance was performed in adult patients of the Hospital Clínico Universidad Católica, Santiago, Chile, from January 2004 to January 2008. Results: A total of 41 IFD episodes were identified in 39 patients; mean age was 46.6 ± 9.9 years, and 87.8 percent and 12.2 percent occurred in H-O and HCTS patients respectively. 15/41(36.6 percent) episodes were proven, 36.6 percent probable and 11/41 (26.8 percent) possible. In 26 (63.4 percent) episodes aspergillosis was diagnosed (20 pulmonary, 3 sinus, 1 laryngeal and 1 case with pulmonary and cerebral involvement). In 7 patients (17.1 percent) candidiasis was diagnosed, 5 with a proven bloodstream infection and 2 with possible hepatosplenic candidiasis; mucormyeosis was diagnosed in 4 (9.8 percent) Fusarium infection was demonstrated in 2 patients (4.9 percent), and Mucor and Aspergillus pulmonary coinfection and Alternaría sp rhino-sinusitis in one patient each. The frequency of IFD among febrile neutropenic patients was 26.2 percent and 6.4 percent in H-O and HSCT receptors respectively. The overall mortality was 36 percent. Conclusions: Aspergillosis is the most common IFD infection among H-O patients and HSCT receptors in our center. Candidiasis followed although only in H-O patients most probably because of routine use of antifungal prophylaxis in HSCT recipients. Continuous surveillance is required to develop local guidelines and to evaluate antifungal strategies in different clinical scenarios.


Introducción: La enfermedad fúngica invasora (EFI) es una complicación grave en pacientes hemato-oncológicos (H-O) y receptores de trasplante de precursores hematopoyéticos (TPH). Objetivo: Describir las EFI diagnosticadas en pacientes adultos H-O y receptores de TPH de nuestro centro, bajo los criterios diagnósticos revisados de EORTC/MSG. Pacientes y Métodos: Estudio de vigilancia de EFI en pacientes adultos del Hospital Clínico de la Pontificia Universidad Católica de Chile entre enero 2004 y enero 2008. Resultados: Se identificaron 41 episodios de EFI, correspondientes a 39 pacientes: 46,6 ± 9,9 años, 87,8 por ciento H-Oy 12,2 por ciento TPH. Se documentaron 15/41 (36,6 por ciento) EFI demostrada, 36,6 por ciento probable y 11/41 (26,8 por ciento) posible. En 26/41 (63,4 por cientoo) se diagnosticó aspergilosis (20 pulmonar, 3 rinosinusal, 1 laríngeo y un caso cerebral-pulmonar). En 7/41 (17,1 por ciento) se diagnosticó candidiasis, 5 candidemias y 2 candidiasis hepato-esplénica posibles; 4/41 (9,8 por cientoo) correspondió a mucormicosis demostrada (2 rinosinusal, 1 oral y 1 pulmonar); en 2/41 (4,9 por cientoo) fusariosis; 1/41(2,4 por ciento)) coinfección pulmonar por mucoral y Aspergillus sp y 1 caso de rinosinusitis por Alternaría sp. La frecuencia de EFI entre pacientes H-O con neutropenia febril fue 26,2 por ciento) y 6,4 por ciento) en los receptores de TPH. La mortalidad global fue de 36 por ciento). Conclusiones: Aspergilosis es la EFI más frecuente en H-O y receptores de TPH de nuestro centro. Candidiasis es la segunda EFI en frecuencia; sin embargo, no se documentó entre los pacientes receptores de TPH, lo que puede relacionarse al uso de antifúngicos profilácticos en este grupo. Es necesaria la vigilancia continua para desarrollar guías clínicas locales y evaluar estrategias de uso de antifúngicos en distintos escenarios clínicos.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Hematopoietic Stem Cell Transplantation/adverse effects , Leukemia/therapy , Lymphoma/therapy , Mycoses/microbiology , Immunocompromised Host , Mycoses/diagnosis
9.
Rev. chil. infectol ; 26(2): 106-113, abr. 2009. ilus, tab
Article in Spanish | LILACS | ID: lil-518469

ABSTRACT

Introduction: The surveillance of febrile neutropenia (FN) episodes in every center allows adapt the antibiotic therapy guidelines to local epidemiology. Aim: To characterize clinical features and compare the FN etiology between hematological cáncer (HC) and solid organ cancer (SOC) in our center. Patients and Methods: Surveillance study in adult patients with FN admitted to Hospital Clinico Universidad Católica, in Santiago, Chile, from January 2004 to August 2007. Results: 154 FN episodes corresponding to 87 patients were included. Mean age: 47 ± 6 years-old; 71 percent had HC and 29 percent SOC. A clinical and/or microbiologically documented infection was recognized in 76 percent. Gastrointestinal 31.5 percent, upper respiratory 30.3 percent and lower respiratory 16.9 percent were the more frequent clinical focus. In 30.5 percent blood culture resulted positive: gram negative rods 51 percent, gram positive cocci 41 percent and yeasts 8 percent; being Escherichia coli 22 percent, S. coagulase negative (SCoN) 20 percent and Klebsiella pneumoniae 12 percent most frequent bacteria; 22.2 percent Enterobacteriaceae were ESBL producers and 55.6 percent 5CoN were methicillin resistant. In 18.3 percent of FN episodes the etiology was not established. Highest mortality was observed in episodes with microbiologically documented infection (14.5 percent vs 1.3 percent, p < 0.005). A clinical observed focus and positive blood cultures were more frequently obtamed among HC than SOC associated episodes: 37.3 percent vs 13.6 percent; (p < 0.01) and 67.2 percent vs 50 percent; (p = 0.045), respectively. Conclusions: The etiological profile of FN in our center and the necessity to continue the surveillance was described. Future studies are needed regarding risk factors of invasive infection that have worst prognosis.


Introducción: La vigilancia de la etiología de los episodios de neutropenia febril (NF) en cada centro permite adaptar guías de antibioterapia a la epidemiología local. Objetivo: Caracterizar y comparar la etiología de la NF en pacientes con cáncer hematológico (CH) y de órganos sólidos (COS). Pacientes y Métodos: Estudio de vigilancia de NF de pacientes adultos en el Hospital Clínico Universidad Católica, en Santiago, Chile, entre enero 2004 y agosto 2007. Resultados: 154 episodios de NF correspondientes a 87 pacientes: 47 ± 6 años; 71 por ciento CH y 29 por ciento COS. Se documentó infección clínica y/o microbiológicamente en 76 por cientoo. Más frecuente fueron: foco gastrointestinal 31,5 por ciento, respiratorio alto 30,3 por cientoo y respiratorio bajo 16,9 por cientoo. En 30,5 por cientoo hubo hemocultivos positivos: bacilos gramne-gativos en 51 por ciento, cocáceas grampositivas en 41 por ciento, levaduras en 8 por cientoo; predominando: Escherichia coli 22 por cientoo, Staphylococcus coagulasa negativa (SCoN) 20 por cientoo y Klebsiella pneumoniae 12 por ciento; 22,2 por cientoo de las entero-bacterias eran productoras de (3-lactamasa de espectro expandido y 55,6 por cientoo >SCoN meticilina resistentes. En 18,3 por cientoo de los episodios no se identificó causa de fiebre. Hubo mayor mortalidad en episodios con documentación microbiológica (14,5 por ciento vs 1,3 por ciento, p < 0,005). En los pacientes con CH fue más frecuente obtener hemocultivos positivos (37,3 por cientoo vs 13,6 por ciento; p < 0,01) e identificar foco clínico (67,2 por ciento vs 50 por ciento; p = 0,045). Conclusiones: Se establece el perfil etiológico de las NF en nuestro centro y la necesidad de mantener vigilancia. En futuros estudios será necesario evaluar factores de riesgo de pacientes con infecciones invasores que tendrían peor pronóstico.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Candidiasis/complications , Fever/microbiology , Gram-Negative Bacterial Infections/complications , Gram-Positive Bacterial Infections/complications , Neoplasms/microbiology , Neutropenia/microbiology , Anti-Bacterial Agents/therapeutic use , Chile , Candidiasis/drug therapy , Fever/drug therapy , Gram-Negative Bacterial Infections/drug therapy , Gram-Negative Bacterial Infections/microbiology , Gram-Positive Bacterial Infections/drug therapy , Gram-Positive Bacterial Infections/microbiology , Neoplasms/classification , Neoplasms/complications , Neutropenia/drug therapy , Prospective Studies , Severity of Illness Index , Young Adult
10.
Rev. méd. Chile ; 136(4): 482-490, abr. 2008. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-484924

ABSTRACT

Background: Colorectal cancer relapses or metastasizes in 30 percent of cases. Cytokeratin 20 is present in 95 percent of colorectal tumors and their metastases and could be used as a marker to detect tumor cells. Aim: To assess the usefulness and prognostic value of peripheral blood and bone marrow cytokeratin 20 determinations in patients with colorectal cancer. Material and methods: Blood and bone marrow samples were obtained from 56 patients with colorectal cancer aged 26 to 77 years (31 females) before surgical procedure. They were followed for a mean of 22 months (range 2.9 to 72 months) after surgery. Blood and bone marrow from 45 patients without cancer and 35 healthy subjects were used as negative controls. Messenger RNA expression of cytokeratin 20 was studied by real time and nested polymerase chain reaction. Results: Cytokeratin 20 was detected in 6 percent of controls and 41 percent of patients. There was no relation between cytokeratin 20 expression and age, gender, overall survival, tumor relapse, progression, localization or stage. Conclusions: Cytokeratin 20 determination is not useful as a marker of tumor progression or dissemination in patients with colorectal cancer.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Colorectal Neoplasms , /blood , Neoplasm Recurrence, Local/blood , Biomarkers, Tumor/blood , Kaplan-Meier Estimate , Bone Marrow/chemistry , Bone Marrow/pathology , Case-Control Studies , Colorectal Neoplasms/blood , Colorectal Neoplasms/pathology , Neoplasm Staging , Neoplastic Cells, Circulating , Prognosis , Reverse Transcriptase Polymerase Chain Reaction , Sensitivity and Specificity , Time Factors
11.
Rev. méd. Chile ; 135(10): 1327-1332, oct. 2007. ilus
Article in Spanish | LILACS | ID: lil-470713

ABSTRACT

Gastrointestinal stromal tumors (GIST) have mutations of the tyrosine kinase receptor. When they are localized, the treatment of choice is surgical excision, but advanced tumors have a limited response to chemo or radiotherapy. Imatinib (STI571 or Glivec®) is a selective inhibitor or tyrosine kinase proteins that has been used successfully in the treatment of advanced GIST. We report four patients (two women) with a metastatic GIST that were treated with Imatinib 400 mg day and followed for 40 months. The disease tumor stabilized in three patients and in one it had an initial reduction and progressed at the end of follow up. Therefore Imatinib can be a therapeutic alternative in patients with metastatic GIST.


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Antineoplastic Agents/therapeutic use , Gastrointestinal Stromal Tumors/drug therapy , Piperazines/therapeutic use , Protein Kinase Inhibitors/therapeutic use , Pyrimidines/therapeutic use , Follow-Up Studies , Gastrointestinal Stromal Tumors/pathology , Gastrointestinal Stromal Tumors/secondary , Treatment Outcome
12.
Arch. latinoam. nutr ; 55(3): 287-292, sept. 2005. tab, graf
Article in English | LILACS | ID: lil-424450

ABSTRACT

Efecto de la radiación gamma en la calidad microbiológica de vegetales minimamente procesados. Se determinó la microflora inicial de apio y repollo minimamente procesado, envasado en atmósfera controlada, proveniente de un proveedor y disponible en una cadena de supermercados de la ciudad de Santiago de Chile. Aunque no se detectó E. coli ni presencia de Salmonella spp, los recuentos de aerobios mesófilos y de enterobacterias fueron elevados (= 105 ufc/g), sobrepasando en la mayoría de los casos las especificaciones de la legislación chilena. Se determinó el valor D10 para dos cepas de E. coli (ATCC 8739 y una cepa silvestre aislada de vegetales) inoculadas como microorganismos indicadores. Se estudió la variación de la población microbiana y la calidad sensorial, después de irradiar con dosis de 5 D10 (1 kGy), durante un período de almacenamiento de 7 días a 5ºC. En apio irradiado se observó una reducción de 4,7 y 3,8 ciclos logarítmicos en el recuento de aerobios mesófilos y de enterobacterias, respectivamente. En repollo la reducción fue de 3,8 y 3,6 logaritmos para recuento de aerobios mesófilos y enterobacterias, respectivamente. En ambos vegetales irradiados y no irradiados, no se detectó E. coli ni presencia de Salmonella spp. Durante el almacenamiento se observó un aumento de 1,6 - 1,7 logaritmos en ambos parámetros microbiológicos en las muestras no irradiadas. En los productos irradiados solo en apio se observó un aumento de 1,2 logaritmos en el recuento de aerobios mesófilos. En repollo el recuento de aerobios mesófilos se mantuvo sin variación en el tiempo, lo mismo se observó para el recuento de enterobacterias en ambos vegetales. No se detectaron diferencias significativas (p=0,05) en la calidad sensorial total, entre el control no irradiado y los productos irradiados, ni entre los días de almacenamiento


Subject(s)
Apiaceae , Brassica , Escherichia coli , Food Irradiation/adverse effects , Plants , Chile , Medicine , Nutritional Sciences
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