oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 4 )

2018 ( 4 )

2017 ( 7 )

2016 ( 15 )

Custom range...

Search Results: 1 - 10 of 6029 matches for " LG Vargas "
All listed articles are free for downloading (OA Articles)
Page 1 /6029
Display every page Item
Queratitis lamelar difusa: tratamiento profiláctico con ketorolaco trometamina 0,5% en un modelo animal Diffuse lamellar keratitis: prophylactic treatment with ketorolac tromethamine 0.5% in an animal model
HP Sandoval,LG Vargas,MP Holzer,TJ Kasper
Archivos de la Sociedad Espa?ola de Oftalmología , 2002,
Abstract: Objetivo: El propósito de este estudio es evaluar el uso de un agente anti-inflamatorio, no esteroideo, en el tratamiento de la queratitis lamelar difusa inducida en un modelo animal. Materiales y Métodos: Se creó un flap corneal en 40 ojos de 20 conejos pigmentados con el microqueratomo ASC y la entrecara fue inoculada con endotoxina de Pseudomona aeruginosa o Palmolive Ultra jabón líquido. Los conejos fueron divididos en dos grupos: El grupo I (n= 20) recibió tratamiento con Ketorolaco trometamina 0,5% solución oftálmica 4 veces al día y el grupo II o control (n= 20), sin tratamiento. Los conejos fueron examinados en la lámpara de hendidura los días 1, 3, 5 y 7 postoperatorios. La presencia de queratitis lamelar difusa fue clasificada de acuerdo a la severidad de I a IV. Resultados: Al final del estudio 31 ojos fueron evaluados. 28 ojos (90%) desarrollaron DLK: 86% de los que recibieron tratamiento y 94% del grupo control. El grupo tratado presentó un menor porcentaje de DLK y la severidad también fue menor que en el grupo control. Sin embargo, no se encontró diferencia estadísticamente significativa al comparar los dos grupos (P > 0,05). Conclusión: Se ha demostrado que tanto la endotoxina LPS de Pseudomona aeruginosa como el Palmolive Ultra jabón líquido pueden inducir DLK. El tratamiento profiláctico con un agente anti-inflamatorio no esteroideo mostró una tendencia a disminuir tanto la presentación de DLK como su severidad. Purpose: The objective of this study is to evaluate the use of a topical non-steroidal anti-inflammatory drug in the treatment of induced diffuse lamellar keratitis (DLK) in an animal model. Materials and Methods: A corneal flap was created in 40 eyes of 20 Dutch-belted rabbits using the ASC microkeratome. The interface was inoculated with either Pseudomonas Aeruginosa Lipopolysaccharide (LPS) endotoxin or Ultra Palmolive liquid dish washer. The rabbits were divided in two groups: Group I (n=20) treated with ketorolac tromethamine ophthalmic solution 0.5% 4 times a day and the group II (n=20) used as control. The rabbits were examined at the slit lamp at day 1, 3, 5 and 7 postoperatively. DLK was graded from I-IV. Results: At the end of the study 31 eyes were available for evaluation. 28 eyes (90%) developed DLK: 86% of the treated group and 94% of the control group during the follow-up. The treated group showed a lower rate of DLK as well as a lower severity. However, no statistically significant difference was found when comparing both groups (P > 0.05). Conclusion: Pseudomonas aeruginosa LPS endotoxin and Palmolive Ultra
Técnicas para la preparación de ojos de cadáver utilizadas para practicar cirugía intraocular del segmento anterior Techniques for preparing postmortem human eyes to perform anterior segment intraocular surgery
LG Vargas,L Werner,SK Pandey,LP Werner
Archivos de la Sociedad Espa?ola de Oftalmología , 2003,
Abstract: Describimos las técnicas para preparar ojos humanos o animales obtenidos postmortem empleados en el Centro de Investigaciones en Terapéutica Ocular y Bio-implantes, Storm Eye Institute, Medical University of South Carolina, Charleston, SC, EE.UU. Estas técnicas han sido utilizadas para prácticar diferentes procedimientos quirúrgicos (facoemulsificación, extracción extracapsular de cristalino, etc.), y para el entrenamiento de cirujanos en transición. La práctica de estas técnicas en el laboratorio ha contribuido a mejorar la habilidad quirúrgica para realizar los pasos críticos de la cirugía de facoemulsificación. La evaluación patológica de los globos humanos pseudofáquicos obtenidos postmortem mediante la técnica posterior de Miyake-Apple, y el análisis histológico han sido fundamentales en el estudio de complicaciones postoperatorias de cirugía de catarata (opacidad de cápsula anterior, opacidad de cápsula posterior) secundarias a proliferación postoperatoria de células epiteliales del cristalino dentro del saco capsular. Las modificaciones en las técnicas quirúrgicas y en el dise o de las lentes intraoculares han ayudado a disminuir estas complicaciones postoperatorias. El implante de diferentes tipos de lentes afáquicos y fáquicos en ojos humanos y animales obtenidos postmortem ha permitido un mejor análisis del tama o y la posición de nuevos dise os de lentes dentro del ojo. We describe different methods to prepare postmortem human or animal eyes used at the Center for Research in Ocular Therapeutics and Biodevices at the Storm Eye Institute, Medical University of South Carolina, Charleston, SC, USA. These techniques have been utilized for performing different surgical procedures (phacoemulsification, extracapsular cataract extraction, etc.), and for training of surgeons in-transition. Performing these techniques in the wet-laboratory contributed to improve surgical skills to perform the critical steps of the phacoemulsification surgery. Pathological evaluation of pseudophakic postmortem human eyes using the Miyake-Apple posterior view and histology was helpful to analyze postoperative complications of cataract surgery (anterior capsule opacification and posterior capsule opacification) secondary to postoperative proliferation of lens epithelial cells into the capsular bag. Modifications in the surgical techniques and/or lens design may be helpful to reduce these postoperative complications. Implantation of various aphakic and phakic intraocular lenses in postmortem human eyes as well as animal eyes was helpful to analyze the sizing and fitting of
Queratitis lamelar difusa: tratamiento profiláctico con ketorolaco trometamina 0,5% en un modelo animal
Sandoval,HP; Vargas,LG; Holzer,MP; Kasper,TJ; Vroman,DT; Apple,DJ; Solomon,KD;
Archivos de la Sociedad Espa?ola de Oftalmología , 2002, DOI: 10.4321/S0365-66912002001100002
Abstract: purpose: the objective of this study is to evaluate the use of a topical non-steroidal anti-inflammatory drug in the treatment of induced diffuse lamellar keratitis (dlk) in an animal model. materials and methods: a corneal flap was created in 40 eyes of 20 dutch-belted rabbits using the asc microkeratome. the interface was inoculated with either pseudomonas aeruginosa lipopolysaccharide (lps) endotoxin or ultra palmolive? liquid dish washer. the rabbits were divided in two groups: group i (n=20) treated with ketorolac tromethamine ophthalmic solution 0.5% 4 times a day and the group ii (n=20) used as control. the rabbits were examined at the slit lamp at day 1, 3, 5 and 7 postoperatively. dlk was graded from i-iv. results: at the end of the study 31 eyes were available for evaluation. 28 eyes (90%) developed dlk: 86% of the treated group and 94% of the control group during the follow-up. the treated group showed a lower rate of dlk as well as a lower severity. however, no statistically significant difference was found when comparing both groups (p > 0.05). conclusion: pseudomonas aeruginosa lps endotoxin and palmolive? ultra can induce dlk in rabbit eyes. the postoperative prophylactic treatment with a topical non-steroidal anti-inflammatory drug showed a tendency towards a lower dlk rate as well as the severity of the disease.
Técnicas para la preparación de ojos de cadáver utilizadas para practicar cirugía intraocular del segmento anterior
Vargas,LG; Werner,L; Pandey,SK; Werner,LP; Schmidbauer,JM; Zuleta,V; Escobar-Gómez,M; Apple,DJ;
Archivos de la Sociedad Espa?ola de Oftalmología , 2003, DOI: 10.4321/S0365-66912003000200004
Abstract: we describe different methods to prepare postmortem human or animal eyes used at the center for research in ocular therapeutics and biodevices at the storm eye institute, medical university of south carolina, charleston, sc, usa. these techniques have been utilized for performing different surgical procedures (phacoemulsification, extracapsular cataract extraction, etc.), and for training of surgeons in-transition. performing these techniques in the wet-laboratory contributed to improve surgical skills to perform the critical steps of the phacoemulsification surgery. pathological evaluation of pseudophakic postmortem human eyes using the miyake-apple posterior view and histology was helpful to analyze postoperative complications of cataract surgery (anterior capsule opacification and posterior capsule opacification) secondary to postoperative proliferation of lens epithelial cells into the capsular bag. modifications in the surgical techniques and/or lens design may be helpful to reduce these postoperative complications. implantation of various aphakic and phakic intraocular lenses in postmortem human eyes as well as animal eyes was helpful to analyze the sizing and fitting of new lens designs within the eye.
Comparative studies on progeny test results from stations and field data
LG Christensen
Genetics Selection Evolution , 1971, DOI: 10.1186/1297-9686-3-1-110b
Abstract:
Recently published papers: We are what we eat?
LG Forni
Critical Care , 2002, DOI: 10.1186/cc1527
Abstract: Anonymous English proverbOver the past few months yet more information bombards us. Several papers have concentrated on nutrition and markers thereof, in an attempt to make sense of much data.Current interest in blood glucose levels focuses on examining patients' glucose tolerance to predict outcomes. This is particularly pertinent to high-dependency and coronary care practice, as well as intensive care unit (ICU) work. The DIGAMI study highlighted the long-term post-myocardial infarction (MI) risk in patients with a deranged glycometabolic state [1]. Similarly, the intensive care population has been scrutinized with regard to glycometabolic control in septic critically ill patients. Strict glycaemic control in such individuals is now hopefully commonplace, with the aim of improving survival. This has prompted much work to delineate those individuals with impaired glycometabolic control, and the same group presented further evidence that abnormal glucose metabolism is associated with a high prevalence of acute MI [2]. A total of 181 consecutive nondiabetic patients admitted with acute MI were given standard glucose tolerance testing at discharge and 3 months later. Fewer than 35% of patients had normal glucose tolerance at 3 months of follow up. It would appear likely, then, that early detection of impaired glycometabolic control might improve outcome by allowing introduction of secondary preventative measures. This probably has little immediate relevance to the ICU, but for those of us who are involved in coronary care it is worthwhile bearing in mind that an HbA1c on admission may well indicate long-term risk and is a relatively quick and inexpensive test.Nutritional support is often regarded as the Cinderella of the intensivist's armamentarium, probably because it does not generate the same excitement as the latest test for inflammatory mediators or suchlike. However, rather like toothache, it is best not ignored. Intense debate continues as to the preferred rout
Características de la capa límite del fondo en el Alto Golfo de California a partir de perfiles de velocidad
Alvarez, LG;
Ciencias marinas , 2010,
Abstract: the vertical structure of currents in the upper gulf of california was studied using velocity profiles observed at a site in 25 m water depth during one fortnightly cycle, in order to determine the development of a logarithmic bottom layer and to estimate parameters derived from the law of the wall. the velocity data included two neap-tide periods in which gravity currents have been shown to develop. the currents were dominated by tidal forcing, and were oriented along-gulf, with the main axis towards 323.8°. spring tide velocity amplitude was 0.5-0.9 m s-1, decreasing to less than 0.30 m s-1 during neap tides. a logarithmic layer structure was observed within the lower half of the water column during spring tides. this layer was less than 5 m thick during neap tides, and was not observed under low velocity conditions, around the times of current reversals. the seabed shear stress values were typical of macrotidal environments, reaching ±2.5 pa under spring tide conditions and decreasing by a factor of 2-3 during neap tides. mean values of the bottom drag coefficient and seabed roughness parameter were 10-2 and 0.05 m, respectively. these relatively high values were attributed to the influence of near-bed stratification. during the two neap-tide periods, two gravity current events were observed within 4-5 m from the seabed, reaching 0.30 m s-1, intensified by the ebb tidal flow. the near-bed velocity profiles were markedly modified during these events that persisted for about three days.
The role of religious values in extending social protection: A South African perspective
LG Mpedi
Acta Theologica , 2008,
Abstract: This article reflects critically on the role played by religious networks – in particular the African Independent Churches or African Initiated Churches (AICs) – in enhancing social protection by means of informal coping mechanisms in the South African context. It also examines various factors that contribute towards informal social security dependency in AICs, namely the influence of the Constitution of the Republic of South Africa, the limited scope of social security coverage, the restricted family concept (underlying much of the formal system which does not reflect the family context in South Africa), African traditional values, and Christian principles. In addition, the article investigates the nature of the relationship between informal coping mechanisms (such as those in AICs) and formal social security, i.e. whether informal social security strengthens or weakens formal social security. It finally explores ways and means of strengthening informal social security, in particular in the wake of challenges such as HIV/AIDS, urbanisation and migration.
Modelul de date al intreprinderii. O abordare orientata obiect
Cretu LG
Scientific Annals of the Alexandru Ioan Cuza University of Iasi : Economic Sciences Series , 2005,
Abstract:
Karyotype composition of some rodents and marsupials from Chapada Diamantina (Bahia, Brasil)
Pereira, LG.;Geise, L.;
Brazilian Journal of Biology , 2007, DOI: 10.1590/S1519-69842007000300016
Abstract: the chapada diamantina (cd) is located in bahia state, between 11-14° s and 41-43° w, being part of the serra do espinha?o. the occurrence of different habitats and transition areas permits an interesting mammal fauna composition, with species from different biomes living in sympatry. species of didelphimorphia and rodentia are important members of mammal communities in almost all different habitats, and morphological and cytogenetic characters are important for a correct identification of most of these species. in this work 258 specimens of small mammals from the orders didelphimorphia (six genera and six species) and rodentia (two families, five sigmodontinae tribes, nine genera and 11 species) were collected during the whole field work (44 nights with traps). chromosome preparations were obtained from 145 specimens from the species: marmosops incanus, gracilinanus microtarsus, monodelphis domestica, akodon aff. cursor, necromys lasiurus, cerradomys sp., oligoryzomys fornesi, o. nigripes, o. rupestris, calomys expulsus, rhipidomys macrurus, wiedomys pyrrhorhinus and thrichomys inermis. didelphis albiventris, micoureus demerarae, thylamys karymii and nectomys sp. were identified by morphological characters. most analyzed specimens do not show karyotype variation. however, numerical chromosomic variation was found in two individuals of akodon aff. cursor (2n = 15) and in one individual of cerradomys sp. (2n = 51). structural variation in karyotype was observed in seven individuals of cerradomys sp., showing one additional pair of metacentric chromosomes.
Page 1 /6029
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.