Pterostilbeno Reduz o Estresse Oxidativo no Pulmão e no Ventrículo Direito Induzido por Infarto do Miocárdio Experimental / Pterostilbene Reduces Experimental Myocardial Infarction-Induced Oxidative Stress in Lung and Right Ventricle

Resumo Fundamento O pterostilbeno (PS), um composto polifenólico natural e antioxidante, surge como uma intervenção promissora para minimizar danos do infarto agudo do miocárdio (IAM). Objetivo Este estudo teve como objetivo avaliar o desempenho do PS na promoção da homeostase redox nos pulmões e no ventrículo direito (VD) de animais infartados. Métodos Ratos Wistar machos (60 dias de idade) foram randomizados em três grupos: SHAM, IAM (infarto) e IAM+PS (IAM + pterostilbeno). Sete dias após o procedimento de IAM, os ratos foram tratados com PS (100 mg/kg/dia) por gavagem por oito dias. Os animais foram depois sacrificados e os pulmões e VD foram coletados para análise do balanço redox (diferenças foram consideradas significativas quando p<0,05). Resultados Nossos resultados mostram que o IAM desencadeia a interrupção redox no VD e nos pulmões, o que pode contribuir para danos induzido pelo IAM nesses órgãos. Consistentemente, o PS mitigou o estresse oxidativo e restaurou as defesas antioxidantes (Glutationa - GSH nos pulmões: SHAM = 0,79 ± 0,07; IAM = 0,67 ± 0,05; IAM + PS = 0,86 ± 0,14; p<0,05), indicando seu papel protetor neste cenário. Conclusão Nosso trabalho evidencia o potencial do uso de PS como abordagem terapêutica adjuvante após IAM para proteção dos tecidos pulmonares e cardíacos direitos.

Abstract Background Pterostilbene (PS), a natural and antioxidant polyphenolic compound emerges as a promising intervention in improving the myocardial infarction (MI) damages. Objetives This study aimed to evaluate PS actions in promoting redox homeostasis in lungs and right ventricle (RV) of infarcted animals. Methods Male Wistar rats (60 day-old) were randomized into three groups: SHAM, MI (infarcted), and MI+PS (MI+pterostilbene). Seven days after MI procedure, rats were treated with PS (100 mg/kg/day) via gavage for eight days. Animals were euthanized and the lungs and RV were harvested for analyses of redox balance (Differences were considered significant when p<0.05). Results Our results show that MI triggers a redox disruption scenario in RV and lungs, which can contribute to MI-induced damage on these organs. Consistently, PS mitigated oxidative stress and restored antioxidant defenses (GSH in lungs: SHAM= 0.79±0.07; MI=0.67±0.05; MI+PS=0.86±0.14; p<0.05), indicating its protective role in this scenario. Conclusions Our work evidences the PS potential use as an adjuvant therapeutic approach after MI focusing on protecting pulmonary and right-sided heart tissues.

Hematopoietic stem cell transplantation in Puebla, México. Traveled roadand goals achieved

Introduction: In México there are only 4 cities that have significantly active hematopoietic stem cell transplantation programs; onlyin 3 of those cities, the most important national public health institution IMSS (Mexican Social Security Institute) count with them. The cities where these programs are found are Mexico City, Monterrey and Puebla. Since the beginning of this decade, and before, the productivity of these transplant programs in this public health institution is low, performing on average 148 transplants every year. Results: In the span comprised between April 1995 and October 2016, we have performed 474 hematopoietic transplants in our hospital; 229 of them were allogeneic and 245 autologous, in adult and children population. This accumulated experience has allowed the implementation of all the variety of hematopoietic stem cell transplantation available in our country, this has opened up the opportunity, for the first time in our institution, the possibility to provide a donor for every patient who requires an hematopoietic transplant, overcoming the phase in which patients could not be submitted to the procedure for lack of a compatible donor. Conclusions: The goals achieved in our hospital confirm the feasibility in developing uninterrupted long term transplant programs in hospitals not specially equipped with technology nor abundant funds of the public health system in the national province, and it shows that this programs can be created and developed in hospitals with similar conditions to ours in México, Latin America and middle-low income countries(AU)

Introducción: en méxico solo cuatro ciudades cuentan con programas de trasplante hematopoyético significativamente activos y en solo tres los tiene el IMSS, la principal institución de salud del país: Monterrey, Puebla y la ciudad de México .La productividad de estos centros del sector público es muy baja, realizando en conjunto 148 trasplantes en promedio por año desde el principio de la década actual. Resultados: en el lapso comprendido entre abril de 1995 y octubre de 2016, se efectuaron 474 trasplantes hematopoyéticos en nuestro hospital; 229 de ellos fueron alogénicos y 245 fueron autólogos, en población adulta e infantil. Esta experiencia acumulada ha permitido la implementación de todas las variedades disponibles en el país de estos procedimientos, lo que ha generado, por vez primera en la institución, poder contar con un donante para todo paciente que requiera un trasplante hematopoyético; superándose la etapa en la que los enfermos no se sometían al procedimiento por falta de un donador compatible. Conclusiones: la actividad acumulada en nuestra unidad hospitalaria confirma la factibilidad de desarrollar programas ininterrumpidos, a largo plazo, de estos procedimientos terapéuticos en hospitales no especialmente dotados de tecnología ni presupuesto del sector público de la provincia nacional y denota que estos mismos programas pueden ser creados y desarrollados en nosocomios con condiciones similares al nuestro en diversos territorios de México, de Latinoamérica y de países con ingreso medio-bajo(AU)

The lumbar and femoral bone mineral densities in a normal female Puerto Rican population

The aim of this study was to establish the reference values of the bone mineral density (BMD) of the lumbar spine and the proximal femur in a normal adult female Puerto Rican population. In the selection of the population, exclusion criteria included diseases, use of drugs and toxic habits (smoking and alcoholism)known to affect bone and mineral metabolism. The study population comprised 131 healthy females, ages 20 to 69 years. Spinal radiographs were taken of women age 60 or more to exclude spinal defects or artifacts. The bone mineral densities were measured using the dual energy X Ray absorptiometer (DEXA, Hologic model 1000). The peak BMD was found in the lumbar spine at the age 30 to 39 years and at the age 20 to 29 years in the femoral neck, trochanter and Ward's triangle. The decrease in BMD from peak values to those at age 60 to 69 years were 18 per cent for the lumbar spine, 16.3 percent for the femoral neck, 30.1 percent for the Ward's triangle and 12.4 percent for the trochanter. The major fall in the BMD was related to the menopause and compares with that of other series. There was no statistical difference from Hologic reference values in a mixed population of the USA