Marine planktonic dinoflagellates of the order dinophysiales (Dinophyta) from coasts of the tropical Mexican Pacific, including two new species of the genus Amphisolenia

Despite a recent revision of the dinoflagellates of the order Dinophysiales on Mexican coasts and a checklist of dinoflagellates from the Mexican Pacific, many records still need to be confirmed, for there are very few reliable illustrations and/or descriptions. In this paper, species composition and distribution of dinoflagellates belonging to the Dinophysiales, the product of the analysis of net phytoplankton material collected from coasts of the tropical Mexican Pacific (Jalisco to Chiapas) are presented. The material has been studied using light microscopy, although a few species were also studied by scanning electron microscopy (SEM). Forty-one species from five genera were identified, with two new records annotated for the Mexican Pacific: Amphisolenia thrinax and Metaphalacroma skogsbergii, and two new species of the genus Amphisolenia, Amphisolenia fusiformis sp. nov. and Amphisolenia michoacana sp. nov. Illustrations, dimensions and distribution data are provided for each species, and descriptions of the new species are also given. Amphisolenia palmata, A. rectangulata, A. truncata, Dinophysis apicata, D. hindmarchii, Histioneis biremis, H. crateriformis, H. pulchra, Ornithocercus cristatus, O. heteroporoides and O. orbiculatus arc illustrated for thefirst time in the waters of the Mexican Pacific. The number of species found in this study is relatively low. The species Dinophysis norvegica and D. sacculus, reported in previous papers, do not seem to occur in Mexican waters, as their distribution is rather limited to the Mediterranean Sea and the North Atlantic, respectively. Finally, the identity of certain species of Dinophysis and the nature of the new species described here are discussed

COMPOSICIÓN DE LA DIETA Y CAPACIDAD NUTRICIONAL DE CARGA DEL HÁBITAT DEL CONEJO DE LOS VOLCANES (Romerolagus diazi) EN MÉXICO

" El estudio se realizó en el Parque Nacional Izta-Popo y Zoquiapan. Se estimaron los aportes nutriciona¬les, biomasa vegetal, capacidad nutricional de carga del hábitat y hábitos alimenticios del Romerolagus diazi. Para ello, las excretas y muestras veg

Las enfermedades crónicas no transmisibles en México: sinopsis epidemiológica y prevención integral Chronic non-communicable diseases in Mexico: epidemiologic synopsis and integral prevention

El gobierno federal desarrolla acciones para reducir la mortalidad por las "enfermedades crónicas no transmisibles" (ECNT). Una de ellas es la creación de unidades médicas de especialidad (Uneme) diseñadas para el tratamiento especializado de las ECNT (sobrepeso, obesidad, riesgo cardiovascular y diabetes). La intervención se basa en la participación de un grupo multidisciplinario entrenado ex profeso, la educación del paciente sobre su salud, la incorporación de la familia al tratamiento y la resolución de las condiciones que limitan la observancia de las recomendaciones. El tratamiento está indicado con base en protocolos estandarizados. La eficacia de la intervención se evalúa en forma sistemática mediante indicadores cuantitativos predefinidos. Se espera que las Uneme resulten en ahorros para el sistema de salud. En suma, este último desarrolla mejores medidas de control para las ECNT. La evaluación del desempeño de las Uneme generará información para planear acciones preventivas futuras.<br>The federal government has implemented several strategies to reduce mortality caused by chronic non-communicable diseases (CNTD). One example is the development of medical units specialized in the care of CNTD (i.e. overweight, obesity, cardiovascular risk and diabetes), named UNEMES (from its Spanish initials). These units -consisting of an ad-hoc, trained, multi-disciplinary team- will provide patient education, help in the resolution of obstacles limiting treatment adherence, and involve the family in patient care. Treatment will be provided using standardized protocols. The efficacy of the intervention will be regularly measured using pre-specified outcomes. We expect that these UNEMES will result in significant savings. In summary, our health care system is developing better treatment strategies for CNTD. Evaluating the performance of the UNEMES will generate valuable information for the design of future preventive actions

Histological changes caused by meclofenamic acid in androgen independent prostate cancer tumors: evaluation in a mouse model

ABSTRACT Meclofenamic acid is a nonsteroidal anti-inflammatory drug that has shown therapeutic potential for different types of cancers, including androgen-independent prostate neoplasms. The antitumor effect of diverse nonsteroidal anti-inflammatory drugs has been shown to be accompanied by histological and molecular changes that are responsible for this beneficial effect. The objective of the present work was to analyze the histological changes caused by meclofenamic acid in androgen-independent prostate cancer. Tumors were created in a nude mouse model using PC3 cancerous human cells. Meclofenamic acid (10 mg/kg/day; experimental group, n=5) or saline solution (control group, n=5) was administered intraperitoneally for twenty days. Histological analysis was then carried out on the tumors, describing changes in the cellular architecture, fibrosis, and quantification of cellular proliferation and tumor vasculature. Meclofenamic acid causes histological changes that indicate less tumor aggression (less hypercellularity, fewer atypical mitoses, and fewer nuclear polymorphisms), an increase in fibrosis, and reduced cellular proliferation and tumor vascularity. Further studies are needed to evaluate the molecular changes that cause the beneficial and therapeutic effects of meclofenamic acid in androgen-independent prostate cancer