Leucemia linfocítica crónica y su respuesta al tratamiento en un perro

Se presenta un caso clínico de leucemia linfocítica crónica en una perra, describiendo el curso de la enfermedad, los métodos diagnósticos empleados y su respuesta al tratamiento quimioterápico.A case of chronic lymphocytic leukemia in a bitch is presented. In this paper we describe the evolution of the disease, the diagnosis protocol and the response to a chemotherapeutic treatment

Estudio de 124 vástagos femorales de Wagner en cirugía de revisión de la cadera

Se presenta una serie de 124 prótesis de cadera tipo Wagner implantadas entre 1990-1997. Se analiza un grupo de 81 prótesis con un seguimiento mínimo de dos años. Se describe la técnica quirúrgica y se analizan las complicaciones intra y postoperatorias. El resultado hallado indica que se trata de una prótesis versátil en los casos en que existe un gran deterioro de la metáfisis femoral, y que la vía transfemoral constituye una buena técnica tanto para la extracción de la prótesis primaria y el cemento como para la regeneración ósea.We present a series of 124 Wagner's long ítem femoral prostheses from 1990 to 1997. we analyzed 81 prostheses with at least two years of follow up. We described the surgical technique, intraoperative and postoperative complications. The results show the versatility of the stem in cases in which great deterioration of the femoral metaphysic exists. The transfemoral approach is a good access method for implant and cement removal as well as for bone restoration

Cryopreservation of Brown Bear Skin Biopsies

Genetic resource banks and assisted reproductive technologies support the conservation of endangered or threatened species. In this study we assessed two procedures to cryopreserve skin biopsies from live brown bears. Skin biopsies were taken from six live, anesthetized brown bears. Single biopsies (n = 3) of each animal were cut into small pieces and assigned to one of the three experimental groups: freezing, vitrification, or untreated fresh. There were no differences on cell attachment. However, both freezing and fresh culture allowed for higher cell proliferation (p < 0.05) and less days to reach 70% to 80% confluence (p < 0.03) than vitrification. Skin biopsies from brown bears can be preserved long term, allowing fibroblasts to proliferate in culture. Slow freezing was effective to cryopreserve skin biopsies from brown bears

The kinematics of the quadrupolar nebula M1-75 and the identification of its central star

The link between the shaping of bipolar planetary nebulae and their central stars is still poorly understood. The kinematics and shaping of the multipolar nebula M 1-75 are hereby investigated, and the location and nature of its central star are briefly discussed. Fabry-Perot data from GHaFAS on the WHT sampling the Doppler shift of the [N II] 658.3 nm line are used to study the dynamics of the nebula, by means of a detailed 3-D spatio-kinematical model. Multi-wavelength images and spectra from the WFC and IDS on the INT, and from ACAM on the WHT, allowed us to constrain the parameters of the central star. The two pairs of lobes, angularly separated by ~22 degrees, were ejected simultaneously approx. ~3500-5000 years ago, at the adopted distance range from 3.5 to 5.0 kpc. The larger lobes show evidence of a slight degree of point symmetry. The shaping of the nebula could be explained by wind interaction in a system consisting of a post-AGB star surrounded by a disc warped by radiative instabilities. This requires the system to be a close binary or a single star which engulfed a planet as it died. On the other hand, we present broad- and narrow-band images and a low S/N optical spectrum of the highly-reddened, previously unnoticed star which is likely the nebular progenitor. Its estimated V-I colour allows us to derive a rough estimate of the parameters and nature of the central star.Comment: 8 pages, 6 figures, accepted for publication in Astronomy & Astrophysic