Melissa Palma-Jiménez

The toxic gain-of-function of RNA-CUG(exp) in DM1 has been largely studied in skeletal muscle, with little focus on its effects on the central nervous system (CNS). This study aimed to study if oxidative stress is present in DM1, its relationship with the toxic RNA gain-of-function and if natural antioxidants can revert some of the RNA-CUG(exp) tox...

Introduction. The mealybug (Hemiptera: Pseudococcidae) is known for its importance at commercial level, since it can affect all stages of development on agricultural crops and cause harvest losses. The name is derived from the secretion of white wax that females present around of the body. Objective. The aim of this bibliographical review was to sy...

To establish appropriate taxonomic relationships in studies of mealybugs it is necessary to study the insects by two techniques: morphological and molecular. The aim of this research is to study mealybugs (Hemiptera: Pseudococcidae) from Ecuador and the Philippines, in banana crop (Musa sp.). The morphological technique light microscopy was used, s...

Many mealybug species (Hemiptera: Pseudococcidae) that are considered pests of important crops are concentrated in the region of tropical countries. In order to update the information on the taxonomy of these insects, ultrastructural variants from different populations of Pseudococcus elisae Borchsenius, 1947, from 11 Costa Rican banana producing f...

To the appropriated taxonomic relationships in mealybugs, and their phylogenetic classification is necessarycombined morphological and molecular techniques. The aim of the present investigation was to study the Pseudococcus elisae (Hemiptera: Pseudococcidae)of banana crop (Musa sp.) from Neotropical region by morphological and molecular techniques,...

Soil is the most complex of all microbial habitats. Tropical soils have high levels of biodiversity and microorganisms that display fascinating mechanisms for interaction and biotransformation, thus regulating the mobility of chemical compounds in the environment. This paper will provide an understanding the relationship between chemical compounds...

Some experiments evidence that Microgravity (Micro-g) has influence in the morphology growth rate of materials and physiology of biological systems. Some Micro-g systems have been developed for experimentation under these conditions. The 2-D, 3-D clinostats and Random Positioning machines stimulate weightlessness. The aim of this review is to show...

Some experiments evidence that Microgravity (Micro-g) has influence in the morphology growth rate of materials and physiology of biological systems. Some Micro-g systems have been developed for experimentation under these conditions. The 2-D, 3-D clinostats and Random Positioning machines stimulate weightlessness. The aim of this review is to show...

The aim of the present study was to identify the species of mealybug from Rebusca Farm in Sarapiquí, Costa Rica. Light microscopy and molecular analysis were done. The microscopy analysis was performed at the Center for Research on Microscopic Structures, and the molecular analysis was carried out at the Molecular Phytopathology Laboratory, at the...

Pseudococcus jackbeardsleyi is a native species of the Neotropical region. Currently there is not an updated record of these species of mealybug in Costa Rica. The aim of this study was to analyze female mealybugs from Siquirrena plantation, Siquirres, Province of Limon, describing the morphology of the insect through the traditional technique of l...

El objetivo del presente trabajo fue determinar la metodología de acondicionamiento adecuada para la limpieza de los especímenes de cochinilla harinosa y su correcta observación. La investigación se llevó acabo en el laboratorio del Centro de Investigación en Estructuras Microscópicas (CIEMIC) de la Universidad de Costa Rica durante el año 2012. Se...