Intestinal resection and primary anastomosis as treatment of intussusception due to ileum lipoma: case report and review

Intussusception is an unusual cause of intestinal occlusion in adults, accounting for 5% of cases, and is the result of an underlying pathology in 90% of cases, 60% of which are tumors. The pathogenesis describes the invagination of an intestinal segment into the lumen of an adjacent segment with subsequent alterations in irrigation, risk of necrosis and perforation. Surgical management is indicated in adult patients to restore intestinal transit and to exclude malignancy as the axis of the intussusception. We present the case of a 58-year-old female patient with enteric intussusception at ileum due to lipoma, who underwent bowel resection and manual end-to-end intestinal anastomosis in two planes

Gastrointestinal stromal tumor as cause of acute abdominal pain in a patient with neurofibromatosis type 1: case report and literature review

Acute abdomen is a common and sometimes dramatic clinical condition, which can be fatal if diagnosis is not made in time. There are many etiologies for acute abdominal pain; therefore, the diagnostic approach should be based on clinical assessment, including laboratory and image studies. Neurofibromatosis 1 (NF1) is an autosomal dominant condition, characterized by cutaneous pigmentation and tumor formation along nerves in the brain, skin and other organs, the gastrointestinal stromal tumors are rare mesenchymal neoplasms associated with NF1. The close correlation between both pathologies is well known, and the clinical relevance relies on the different pathogenesis from sporadic gastrointestinal stromal tumor (GIST), with important therapeutic implications as the use of imatinib prior or after surgery, regarding the individual context of the patient. This case report illustrates the management of an NF1 patient presenting with acute abdomen to the emergency room and follow-up

Inguinal plasty and appendectomy as treatment for Amyand's hernia: case report and literature review

Amyand's hernia is described as the presence of the caecal appendix within the hernial sac of an incarcerated inguinal hernia. It was reported as an incidental finding in 1% of cases and with evidence of appendicitis in 0.1% of cases. The approach involves performing appendectomy and inguinal repair in the same surgical time, depending on the clinical scenario and the surgeon's decisions. We presented the case of a 76-year-old male patient with a diagnosis of Amyand's right inguinal hernia diagnosed during trans-operative right inguinal plasty

Efecto de incendios en la vegetación de sotobosque y propiedades químicas de suelo de bosques templados

Objective: to assess the severity of a forest fire and its impact on understory vegetation(shrubs, herbs, grasses) and on the chemical properties of the soil.Design/methodology/approach: in an area of 100 m 2 , individuals of shrubs, herbs andgrasses were recorded. Soil was also collected in 60 x 60 cm subsites in all samplingsites in three regions of a temperate forest considering the severity of the fire as intact,intermediate and severe.Results: it was found that the relative abundance of different life forms varied in relationto severity, only herbaceous benefited in intermediate severity, shrubs and grassesdecreased. Soil pH and exchangeable cations Mg++, Na+, K+ and Ca++ increased asfire severity increased. N, P, K nutrients increased mainly in the intermediate severity,contrary to expectations for N.Limitations of the study/implications: not having more temperate forest zonesreplicated reduces the ecological patterns of understory vegetation succession andchemical soil changes. Findings/conclusions: The intermediate fire severity presented greater abundance ofherbaceous plants. Similarly, the interchangeable cations, nitrogen, phosphorus andpotassium increased in the same severity.Objetivo: evaluar la severidad de un incendio forestal y su impacto en la vegetación de sotobosque (arbustos, hierbas, pastos) y en las propiedades químicas del suelo.Diseño/metodología/aproximación: en un área de 100 m 2 se registraron los individuos de arbustos, herbáceas y pastos. También se recolectó suelo en cuadros de 60 x 60 cm en todos los sitios de muestreo en tres regiones de un bosque templado considerando la severidad del incendio como intacto, intermedio y severo.Resultados: se encontró que la abundancia relativa de las diferentes formas de vida varió en relación a la severidad, solo las herbáceas se beneficiaron en severidades intermedias, los arbustos y pastos disminuyeron. El pH del suelo y los cationes intercambiables Mg ++ , Na + , K + y Ca ++ aumentaron conforme aumentó la severidad del incendio. Los nutrientes N, P, K aumentaron principalmente en las severidades intermedias, contrario a lo esperado para N.Limitaciones del estudio/implicaciones: no contar con réplicas de más zonas de bosques templados reduce los patrones ecológicos de la sucesión de la vegetación del sotobosque y los cambios químicos del suelo.Hallazgos/conclusiones: la severidad intermedia del incendio presento mayor abundancia de herbáceas. De igual manera, los cationes intercambiables, el nitrógeno, fósforo y potasio aumentaron en la misma en severidad

Cytological effects of pulsed electromagnetic fields and static magnetic fields induced by a therapeutic device on in vivo exposed rats

Background: There is a trend towards the use of magnetic fields in medicine. Pulsed electromagnetic fields (PEMFs) technology was based upon 20 years of fundamental studies on the electromechanical properties of bone and other connective tissues. More recently, these magnetic fields have been used to treat several health conditions. There remains continuing concern that exposure to electromagnetic devices may cause adverse effects. The aim of the present study was to investigate the cytological effects induced in rats exposed in a patented medical device that uses PEMFs combined with static magnetic fields (SMFs).Material and Methods: Thirty sexually mature 14-week-old male and female Sprague Dawley rats were distributed into three groups: (a) 5 males and 5 females (independently) exposed to PEMFs combined with SMFs, (b) animals treated with SMFs only, and (c) non-exposed animals. Acridine orange fluorescent-staining micronucleus test and male germ cells analysis were performed according to standardized techniques.Results: A lack of evidence for alterations on micronucleus frequency, on polychromatic erythrocytes percentage, and on sperm counts and morphological characteristics of male germ cells were found in mature rats exposed to PEMFs medical device compared to non-exposed animals.Conclusions: This study suggests that the applied magnetic field generated in a therapeutic device did not have any detectable cytotoxic or genotoxic effect in exposed rats. In view of these findings and the contradictory reports in the literature, it is necessary to carry out more research to help clarify the controversy concerning cytogenotoxic risk associated with therapeutic magnetic fields exposures.Keywords: Cytotoxicity, pulsed electromagnetic fields, static magnetic fields, micronuclei, sperm abnormalitie

Evolution of Phenolic Content, Antioxidant Capacity and Phenolic Profile during Cold Pre-fermentative Maceration and Subsequent Fermentation of Cabernet Sauvignon Red Wine

The phenolic compound profile and content of red wines are modified during the maceration-fermentation process by several factors that alter the extractability of the compounds and by reactions that phenolic compounds undergo, and can be directly related to the quality of the final wine and its beneficial effects on the consumer. The aim of this study was to determine the change in phenolic content and profile during cold pre-fermentative maceration and fermentation without the removal of grape pomace. Total phenolics,flavonoids, anthocyanins, tannins and antioxidant capacity were determined by spectrophotometric methods, and the phenolic profile was determined by HPLC-MS on each day of the maceration-fermentation process. The results showed a variation in the content of phenolic compounds and antioxidant activity over time, but the final phenolic content showed no significative difference compared with the initial content (1 268 mg GAE/L and 1 115 mg GAE/L respectively). The phenolic profile showed that flavonoids were theprincipal compounds in wine and that they increased at the end of the winemaking. Condensed tannins also increased during fermentation, while anthocyanins and some phenolic acids decreased at the end of the process. The final content of phenolic compounds was similar to the initial one, but there was a change in the different fractions of phenolic compounds at the end of fermentation

Extracción y purificación de timol y carvacol en orégano (Lippia graveolens Kunth) para su evaluación biológica sobre semillas de maíz cebú (Zea mays L.) y sorgo (Sorghum bicolor L. Moench) como fitorregulador natural.

México es el principal exportador a nivel mundial de orégano mexicano; debido al contenido de aceite esencial. Su contenido de metabolitos secundarios se relaciona con el proceso de germinación y actividad biológica de muchas plantas dependiendo de la dosis. Los cereales juegan un papel primordial en la vida alimenticia del hombre por la fuente de nutrientes que proporciona, así como la gran importancia económica, en México se hace necesario estudiar el Maíz Cebú y Sorgo , los cuales por sus características agronómicas y nutricionales pudieran aportar grandes beneficios en la alimentación, a nivel mundial. Se evaluó el efecto de timol y carvacrol durante la germinación de semillas de maíz y sorgo. Se colocaron 20 semillas por caja petri en cuatro grupos de 15 cajas para cada tratamiento: 2,1, 0.1 (ppm) y el control. A los 9 días se cortó por separado radícula, coleoptilo y endospermo. Los resultados para peso seco de coleoptilo y radícula mostraron diferencias significativas entre los tratamientos pero no entre las especies, mientras que para el peso seco del endospermo las diferencias son significativas tanto entre genotipos como entre tratamientos. A menor concentración existe un estímulo en el crecimiento. Los extractos de orégano podrían funcionar como estimulantes naturales

Rendimiento de grano en líneas de sorgo cultivadas bajo riego y riego limitado en Texas

El objetivo de este trabajo fue evaluar, bajo riego y riego limitado, el rendimiento de grano de 40 líneas F7 de sorgo (Sorghum bicolor L. Moench) seleccionadas por tolerancia a sequía en la Facultad de Agronomía de la Universidad Autónoma de Nuevo León (FAUANL) en Marín, Nuevo León, México. Los estudios se efectuaron en College Station, Texas, en el ciclo Otoño-Invierno 2011, y en Lubbock, Texas en el ciclo Primavera-Verano 2011. Las 40 líneas se dividieron en dos grupos de 20 genotipos para integrar dos experimentos, más cinco líneas experimentales y un híbrido comercial como testigo. Entonces, se estudiaron 26 tratamientos, con dos repeticiones. Se utilizó un diseño de bloques completos al azar con covarianza, con el número de plantas por parcela como covariable independiente y el rendimiento de grano de sorgo como variable dependiente. El rendimiento de grano por planta fue en general mayor en College Station que en Lubbock. En ambas localidades, tanto en riego como en riego limitado, se identificaron líneas F7 cuyo rendimiento de grano fue estadísticamente superior a aquel del híbrido testigo y de las líneas que participaron en la cruza que dio origen a la F2 de la cual se seleccionaron

The spacetime associated with galactic dark matter halos

We show how an adequate post--Newtonian generalization can be obtained for Newtonian dark matter halos associated with an empiric density profile. Applying this approach to halos that follow from the well known numerical simulations of Navarro, Frenk and White (NFW), we derive all dynamical variables and show that NFW halos approximatelly follow an ideal gas type of equation of state which fits very well to a polytropic relation in the region outside the core. This fact suggests that ``outer'' regions of NFW halos might be related to equilibrium states in the non--extensive Statistical Mechanics formalism proposed by Tsallis.Comment: 6 pages, 1 figur

Understanding Galaxy Formation and Evolution

The old dream of integrating into one the study of micro and macrocosmos is now a reality. Cosmology, astrophysics, and particle physics intersect in a scenario (but still not a theory) of cosmic structure formation and evolution called Lambda Cold Dark Matter (LCDM) model. This scenario emerged mainly to explain the origin of galaxies. In these lecture notes, I first present a review of the main galaxy properties, highlighting the questions that any theory of galaxy formation should explain. Then, the cosmological framework and the main aspects of primordial perturbation generation and evolution are pedagogically detached. Next, I focus on the ``dark side'' of galaxy formation, presenting a review on LCDM halo assembling and properties, and on the main candidates for non-baryonic dark matter. It is shown how the nature of elemental particles can influence on the features of galaxies and their systems. Finally, the complex processes of baryon dissipation inside the non-linearly evolving CDM halos, formation of disks and spheroids, and transformation of gas into stars are briefly described, remarking on the possibility of a few driving factors and parameters able to explain the main body of galaxy properties. A summary and a discussion of some of the issues and open problems of the LCDM paradigm are given in the final part of these notes.Comment: 50 pages, 10 low-resolution figures (for normal-resolution, DOWNLOAD THE PAPER (PDF, 1.9 Mb) FROM http://www.astroscu.unam.mx/~avila/avila.pdf). Lectures given at the IV Mexican School of Astrophysics, July 18-25, 2005 (submitted to the Editors on March 15, 2006