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1.
Article in Spanish | LILACS | ID: lil-339370

ABSTRACT

La síntesis se realiza por la técnica de W. Brandau. La purificación se realizó por cristalización fraccionada en metanol: agua (80:20), monitoreada por HPLC. Se obtienen varios precipitados, con los cuales se preparan minilotes de prueba, que se marcan con Tc 99m y se realizaron los controles radioquímicos y las evaluaciones biológicas. Los resultados obtenidos son los siguientes: la pureza química del Bz-MAG3 se incrementa de un 70 por ciento a un 98,12 por ciento del compuesto activo, con un rendimiento del 25 por ciento aproximadamente; la pureza radioquímica de los precipitados puros es mayor del 98 por ciento y el porcentaje de dosis de inyección en riñones se incrementa de un 8 por ciento a un 30 por ciento a los 5 minutos post-inyección en ratones sanos. El porcentaje de excreción renal promedio a los 60 minutos es mayor del 90 por ciento, porcentaje que garantizará una buena calidad de imágenes gammagráficas renales.


Subject(s)
Animals , Mice , Technetium Tc 99m Mertiatide , Kidney Concentrating Ability/radiation effects , Radiopharmaceuticals/pharmacology
2.
Bol. Asoc. Méd. P. R ; 89(10/12): 157-160, Oct.-Dec. 1997.
Article in English | LILACS | ID: lil-411430

ABSTRACT

The purpose of this study is to evaluate the efficacy of Naltrexone in decreasing craving symptoms among Puerto Rican male veterans with alcohol dependence. METHOD: This is a double blind placebo control study with a convenience sample of eleven patients divided in two groups (placebo and Naltrexone). Scales consisting of Zung Depression, Zung Anxiety, MMSE, OCD Screener, Craving, and Somatization were administered at baseline, and weekly for four weeks as follow up. RESULTS: There were no statistically significant differences between the two groups on any of the outcome variables at baseline or follow up measurements. A statistical trend was noted toward a decrease in somatization. A decrease in craving symptoms was observed in the experimental group. CONCLUSIONS: Even though our results did not show evidence of the efficacy of Naltrexone in decreasing craving symptoms, a small number of patients did benefit from the medication. The results could have been affected by the small sample size


Subject(s)
Humans , Male , Adult , Middle Aged , Alcoholism/drug therapy , Naltrexone/therapeutic use , Ambulatory Care , Alcoholism/psychology , Anxiety/drug therapy , Double-Blind Method , Depression/drug therapy , Pilot Projects , Psychological Tests , Treatment Outcome , Obsessive-Compulsive Disorder/drug therapy , Cognition Disorders/drug therapy , Somatoform Disorders/drug therapy
3.
Suma psicol ; 4(2): 101-113, sep. 1997. graf
Article in Spanish | LILACS | ID: lil-468734

ABSTRACT

Se registraron eventos de potenciales sincronizados relacionados con las respuestas EMG durante tareas sensoriales motoras en sujetos (N=20) con habilidades motores variadas. Las latencias ERP y EMG aumentaron con tareas de mayor dificultad: El grupo de habilidad superior incrementó las amplitudes N100 (para estímulos frecuentes) y P200 (para estímulos raros) y decremento el tiempo de movimiento. Los resultados sugieren que la habilidad motora superior modificó la respuesta motora pero no afectó la latencia de ERP. El grupo de habilidades superiores necesitó un tiempo más corto, menos preparación o expectativa y menos errores para realizar la tarea sensoriomotora.


Event Related potentials synchronized with EMG responses were recorded during sensorimotor tasks for subjects (N=20) who varied in motor ability. ERPs and EMG latencies increases with increasing task difficulty. The high ability group increases N100 (for frequent stimuli) and P200 (for rare stimuli) amplitudes and decreases the movement time. Results suggest that the high motor ability modify motor response but the ERPs latency are unaffected. The high motor ability group needs a shorter time, less preparedness or expectancy and less errors for carrying out the sensorimotor tasks.


Subject(s)
Humans , Psychomotor Performance , Electromyography , Evoked Potentials , Decision Making
4.
Rev. méd. Panamá ; 20(1/2): 50-53, Jan.-May 1995.
Article in Spanish | LILACS | ID: lil-409941

ABSTRACT

The authors reviewed the clinical records of 31 patients with carcinoma of the breast diagnosed at the Dr. Rafael Hernández Hospital in Chiriquí from January 1988 to December 1990. All the patients were women and the average age was 51.9 years. 41.9% of the patients were classified Stage 1; 29%, Stage 2; 16.1%, Stage IIIA; and 12.8%, Stage IIIB. 74% of the patients were treated with a modified radical mastectomy, radiation and hormonal therapies. Systemic cytotoxic therapy was given to 77% of the patients. Total survival 48 months after diagnosis was 83.3% in patients at Stage I; 66%, at Stage II; 40%, at Stage IIIA; and 0%, in patients at Stage IIIB


Subject(s)
Humans , Female , Adult , Middle Aged , Breast Neoplasms/pathology , Neoplasm Staging , Mastectomy , Lymphatic Metastasis , Breast Neoplasms/mortality , Breast Neoplasms/surgery , Panama/epidemiology , Combined Modality Therapy
5.
Rev. méd. Panamá ; 18(3): 217-221, Sept. 1993.
Article in Spanish | LILACS | ID: lil-410000

ABSTRACT

The authors present the clinical history of a 15-year-old young woman, student, from David, Chiriquí, who complained of menstrual irregularities associated with the sensation of a mass in the right iliac fossa. Exploratory laparotomy revealed a right ovarian tumor, which was totally resected. The histopathological examination showed an endodermal sinus tumor, stage one, in the right ovary. The patient received four cycles of cytotoxic i.v. therapy every 3 weeks, after surgery, with vinblastine 6 mg/m2 body surface (B.S.) on days 1 and 2, bleomycin 15 u daily for 5 days, cisplatin 20 mg/m2 B.S. daily for 5 days, plus hydration with normal saline (5 to 6 l/day). Follow up studies with abdominal and pelvic sonograms, chest x-ray, feto protein and physical examination have not shown evidence of tumor activity 36 months after diagnosis


Subject(s)
Humans , Female , Adolescent , Ovarian Neoplasms/pathology , Endodermal Sinus Tumor/pathology , Ovarian Neoplasms/therapy , Ovary/pathology , Combined Modality Therapy , Endodermal Sinus Tumor/therapy
6.
An. anat. norm ; 7: 143-5, 1989. ilus
Article in Spanish | LILACS | ID: lil-87672

ABSTRACT

El colágeno tipo I además de ser el más abundante de nuestro organismo, es el que adopta la disposición fibrilar más visible a microscopía óptica. La unidad funcional de este tipo de colágeno corresponde a un tropocolágeno con la siguiente fórmula química: (* 1 I)* * 2, fórmula que lo diferencia de los otros tipos de colágeno. Con la técnica del Picro-Sirius a la luz polarizada se ha podido identificar con mayor exactitud este tipo de colágeno, pues se tiñe de un color rojo intenso, a diferencia del colágeno 2 que se tiñe amarillo o el colágeno 3 de azul. La placenta es un órgano que a medida que avanza la gestación sufre modificaciones estructurales tales que hace aplicable a su tejido el término "envejecimiento placentario". Uno de los signos relacionados con este término, es el aumento de la fibrosidad en el corión de la vellosidad coriónica. Con la aplicación de la técnica del Picro-Sirius, a cortes histológicos en 10 placentas de término normales, hemos comprobado que el aumento de la fibrosidad en la vellosidad coriónica corresponde a colágeno tipo I, y por otro lado aplicando esta misma técnica a cortes de 10 placentas de término de pacientes con pre-eclampsia, queda de manifiesto en forma evidente, que el tejido de estas vellosidades es más inmaduro para la edad gestacional, y la fibrinogénesis del colágeno I está retardada en esta patología


Subject(s)
Pregnancy , Adult , Humans , Female , Collagen , Placenta/anatomy & histology , Pre-Eclampsia
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