Gisell Garcia - Academia.edu (original) (raw)

Papers by Gisell Garcia

Veterinary Ophthalmology, 2007

Objective To measure changes in the thickness of the retinal nerve fiber layer in normal and ear... more Objective To measure changes in the thickness of the retinal nerve fiber layer in normal and early glaucomatous dogs with scanning laser polarimetry.Animals studied A total of 45 eyes, 32 normal and 13 glaucomatous eyes, of American Cocker Spaniels with primary glaucoma were used. All eyes were evaluated through a complete neuro-ophthalmic examination, tonometry, gonioscopy, slit-lamp biomicroscopy, and indirect ophthalmoscopy prior to enucleation.Methods The retinal nerve fiber layer thickness was measured in anesthetized animals with scanning laser polarimetry (Nerve fiber analyzer, GDx; Laser Diagnostic Technologies, LTD, San Diego, CA, USA). Glaucomatous eyes retained some vision at the time of this study.Results The mean ± SD of the retinal nerve fiber layer thickness was 141.69 ± 18 µm for normal dogs and 105.08 ± 23.86 µm for visual glaucomatous dogs. The average retinal nerve fiber layer thickness in the superior and inferior retinal quadrants was 148.03 ± 8.5 and 141.06 ± 8.73 µm, respectively, for normal dogs, and 106.61 ± 25.77 and 107.08 ± 24.99 µm in the superior and inferior retinal quadrants, respectively, for glaucomatous dogs. The superior to nasal retinal nerve fiber layer thickness ratio was 1.45 for normal dogs and 1.26 for visual glaucomatous dogs.Conclusions Using scanning laser polarimetry it was possible to detect changes in retinal nerve fiber layer thickness in glaucomatous dogs at early stages of the disease. Therefore, this instrument has the potential to improve the clinical management of canine glaucoma by detecting progressive changes to the retinal nerve fiber layer.

Revista Latino-americana De Enfermagem, 1996

This study aimed at presenting a number of theoretical considerations related to ethnographic inv... more This study aimed at presenting a number of theoretical considerations related to ethnographic investigation viewing the disclosing of that type of nursing research. This study shows the definitions provided by various authors is addition to the methodology aspects regarding this type of approach.

Nature, 2007

From the standpoints of both basic research and biotechnology, there is considerable interest in ... more From the standpoints of both basic research and biotechnology, there is considerable interest in reaching a clearer understanding of the diversity of biological mechanisms employed during lignocellulose degradation. Globally, termites are an extremely successful group of wood-degrading organisms 1 and are therefore important both for their roles in carbon turnover in the environment and as potential sources of biochemical catalysts for efforts aimed at converting wood into biofuels. Only recently have data supported any direct role for the symbiotic bacteria in the gut of the termite in cellulose and xylan hydrolysis 2 . Here we use a metagenomic analysis of the bacterial community resident in the hindgut paunch of a wood-feeding Nasutitermes species to show the presence of a large, diverse set of bacterial genes for cellulose and xylan hydrolysis. Many of these genes were expressed in vivo or had cellulase activity in vitro, and further analyses implicate spirochete and fibrobacter species in gut lignocellulose degradation. New insights into other important symbiotic functions including H 2 metabolism, CO 2 -reductive acetogenesis and N 2 fixation are also provided by this first system-wide gene analysis of a microbial community specialized towards plant lignocellulose degradation. Our results underscore how complex even a 1-μl environment can be.

Gastroenterology, 2005

The cell planning based on the WiMax standard for home access is addressed in this paper. This ce... more The cell planning based on the WiMax standard for home access is addressed in this paper. This cell planning is carried out for a home zone near to Mexico City, whose houses are located at the bottom of a hill. Different considerations are taken into account to determine the number and locations of base stations. From simulations, different coverage cases are obtained and compared each other. Settings for these terminals are varied so that an optimal solution is proposed.

Mutation Research-fundamental and Molecular Mechanisms of Mutagenesis, 2011

The role of the DNA repair genes OGG1, XRCC1, XRCC2 and XRCC3 on differentiated thyroid cancer (D... more The role of the DNA repair genes OGG1, XRCC1, XRCC2 and XRCC3 on differentiated thyroid cancer (DTC) susceptibility was examined in 881 individuals (402 DTC and 479 controls). DNA repair genes were proposed as candidate genes, since the current data indicate that exposure to ionizing radiation is the only established factor in the development of thyroid cancer, especially when it occurs in early stages of life. We have genotyped DNA repair genes involved in base excision repair (BER) (OGG1, Ser326Cys; XRCC1, Arg280His and Arg399Gln), and homologous recombination repair (HRR) (XRCC2, Arg188His and XRCC3, ISV-14G). Genotyping was carried out using the iPLEX (Sequenom) technique. Multivariate logistic regression analyses were performed in a case-control study design. From all the studied polymorphism, only a positive association (OR=1.58, 95% CI 1.05-2.46, P=0.027) was obtained for XRCC1 (Arg280His). No associations were observed for the other polymorphisms. No effects of the histopathological type of tumor were found when the DTC patients were stratified according to the type of tumor. It must be emphasized that this study include the greater patients group, among the few studies carried out until now determining the role of DNA repair genes in thyroid cancer susceptibility.

Journal of Nuclear Cardiology, 2005

Background: Appropriate diagnosis and therapy of coronary artery disease (CAD) frequently require... more Background: Appropriate diagnosis and therapy of coronary artery disease (CAD) frequently require information about both the functional and morphological status of the coronary artery tree. Aim of this retrospective analysis was to evaluate multislice spiral computed tomography angiography (MDCTA) compared to conventional coronary angiography (CCA) in terms of allocation of perfusion defects as detected by myocardial SPECT (MPI) to their determining coronary lesions in patients with advanced CAD. Methods: 20 patients with advanced CAD were retrospectively studied. Electrocardiographically gated MPI, MDCTA using a 16-detector CT scanner and CCA were performed in each patient. Reversible perfusion defects were subsequently allocated to their determining lesion separately for MDCTA and CCA. After this, MDCTA was compared to CCA in terms of lesion detection and lesion evaluation and in stating the correct diagnosis of CAD. In a third step, MDCTA and CCA were correlated in allocating reversible perfusion defects to their determining coronary lesions. Results: 20 patients (14 male, mean age 64 Ϯ 9.2 [48-79] years) were eligible. Correct diagnosis of CAD was stated in 14/20 patients by MDCTA. 33/47 coronary artery stenoses as detected by CCA showed coronary artery lesions including coronary stents in MDCTA, while 16/43 lesions in MDCTA were not correlated with any coronary stenosis in CCA. Sensitivity, specificity, NPV and PPV for MDCTA to detect stenoses Ն50% in 265 coronary segments for patients with advanced CAD were 46%, 97%, 92% and 73%, respectively. 5/5 reversible perfusion defects (PD) in MPI could be allocated to an appropriate coronary artery stenoses in CCA. Stenoses were located 4x in the LAD and 1x in the LCX. In MDCTA 5/5 reversible PD were allocated to the same lesions, all lesions were rated as Ն50%.

Health Psychology Review, 2011

The rapidly expanding number of Hispanics living in USA has increased the need for their inclusio... more The rapidly expanding number of Hispanics living in USA has increased the need for their inclusion in research on physical and mental health. Current studies that have explored health outcomes among Hispanics have often noted an ‘epidemiological paradox’, in which there is a discrepancy between their minority status and positive health outcomes when compared with other racial/ethnic groups. Certain socio-cultural variables, in particular the value placed on family, have been largely implicated in these findings. This review will provide a summary of the literature exploring familism within the structure of the Hispanic family and its potential impact on health. We will focus on research exploring the plausible impact that family and familism values may have on the physical health (particularly within the HIV, diabetes, and breast cancer literature) and also on health behaviours of Hispanics, as well as its effect on mental health (particularly related to acculturative stress and caregiver stress). Throughout the review, we highlight some of the potential mechanisms by which familism may impact on the health status of Hispanics. We conclude the review by noting some of the clinical and ethical implications of this research, and by offering suggestions for future work in this area.

International Journal of Gynecology & Obstetrics, 2009

Estudios dan a conocer las principales causas por las que una mujer se realiza un aborto. La prin... more Estudios dan a conocer las principales causas por las que una mujer se realiza un aborto. La principal causa es porque el bebè interfierìa en su carrera o trabajo. Razones principales: Sociales, económicas, familiares, salud, personales, violación. El bebe interferiría en su carrera o trabajo, no puede mantener al bebe, problemas familiares, no hay preparación para afrontar esa responsabilidad, No desea que otros se enteren de su vida sexual como activa, se consideran muy jóvenes para ser madres, ya tiene lo hijos deseados o sus hijos son mayores, el marido o compañero desea el aborto, probable enfermedad del feto, problemas de salud de la madre, los padres de la joven desean que se practique el aborto, la mujer fue victima de violación

La primera disciplina precursora de la criminalística fue lo que en la actualidad se conoce como ... more La primera disciplina precursora de la criminalística fue lo que en la actualidad se conoce como dactiloscopia, ciencia que estudia las huellas dactilares. La criminalística tal como la entendemos nace de la mano de la medicina forense, en torno al siglo XVII, cuando los médicos toman parte en los procedimientos judiciales. Antes de conocer el desarrollo y evolución de la criminalística debemos distinguir dos etapas, de cuyos representante hablaremos posteriormente.