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Search Results: 1 - 10 of 676129 matches for " María Inés Villacé "
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Criptosporidiosis intestinal en ni os con HIV/SIDA Intestinal cryptosporidiosis in HIV infected children
Graciela Barboni,Marcela Candi,María Inés Villacé,Araceli Leonardelli
Medicina (Buenos Aires) , 2008,
Abstract: El Cryptosporidium parvum, protozoo parásito intracelular, infecta el epitelio gastrointestinal produciendo diarrea autolimitada en individuos inmunocompetentes pero potencialmente grave en pacientes inmunocomprometidos, especialmente en aquellos con Sida. En este trabajo se evaluó, durante un lap-so de 6 a os, la incidencia de infección intestinal por C. parvum en una población pediátrica con HIV/Sida analizando las características clínicas e inmunológicas de la coinfección. Todos los pacientes iniciaron o continuaron el tratamiento antirretroviral de alta eficacia HAART durante el período de estudio, mientras que la infección intestinal fue tratada con azitromicina. La incidencia de criptosporidiosis fue de 13.7%. 33 de los 240 ni os en seguimiento presentaron diarrea crónica de más de 14 días de evolución o recurrente, sin complicaciones hidroelectrolíticas. Los pacientes evaluados presentaron niveles porcentuales variables de células T CD4+ en sangre periférica, y la presencia del parásito no estuvo en relación con el compromiso inmunitario. Al momento del cuadro entérico 31 de los 33 pacientes tuvieron niveles plasmáticos de carga viral que superaban el límite de detección. Se observó eosinofilia leve o moderada en el 23% de los pacientes y la coinfección con otros parásitos fue detectada en 11 ni os. No se obtuvieron diferencias significativas al relacionar el número de episodios intestinales con los estadios clínico-inmunológicos de los pacientes. La correcta implementación del HAART con la subsecuente restauración de la función inmune se relacionaría con la ausencia de cuadros diarreicos agudos y de las complicaciones hidroelectrolíticas derivadas de la coinfección con C. parvum. Cryptosporydium parvum is an intracellular parasite that infects gastrointestinal epithelium and produces diarrhea that is self-limited in immunocompetent persons but potentially life-threatening in immunocompromised, especially those with the acquired immunodeficiency syndrome (AIDS). C. parvum enteric infection's incidence in a pediatric HIV/AIDS cohort, during a 6 years period, was studied. Clinical and immunologic characteristics of the dual infection were also recorded. Highly active antiretroviral therapy (HAART) was started or continued by all the patients during follow-up. Azithromicyn was used as antiparasitic drug. Cryptosporidiosis incidence was 13.7%; 33 out 240 children showed chronic diarrhea lasting 14 days at least, or recurrent, without dehydration and electrolytic disturbance. Peripheral blood T CD4+ percentage levels of the patients were variable and
Criptosporidiosis intestinal en ni?os con HIV/SIDA
Barboni,Graciela; Candi,Marcela; Villacé,María Inés; Leonardelli,Araceli; Balbaryski,Jeanette; Gaddi,Eduardo;
Medicina (Buenos Aires) , 2008,
Abstract: cryptosporydium parvum is an intracellular parasite that infects gastrointestinal epithelium and produces diarrhea that is self-limited in immunocompetent persons but potentially life-threatening in immunocompromised, especially those with the acquired immunodeficiency syndrome (aids). c. parvum enteric infection's incidence in a pediatric hiv/aids cohort, during a 6 years period, was studied. clinical and immunologic characteristics of the dual infection were also recorded. highly active antiretroviral therapy (haart) was started or continued by all the patients during follow-up. azithromicyn was used as antiparasitic drug. cryptosporidiosis incidence was 13.7%; 33 out 240 children showed chronic diarrhea lasting 14 days at least, or recurrent, without dehydration and electrolytic disturbance. peripheral blood t cd4+ percentage levels of the patients were variable and without relationship with c. parvum presence. viral load levels in 31 out 33 patients were over cut-off at the enteric episode time. mild or moderate eosinophilia were recorded in 23% of the patients and other intestinal parasites were present in 11 children. when the number of enteric episodes were compared with the clinical and immunological patient's status, not significant differences were recorded. haart is the best treatment to improve immune function in hiv patients avoiding potentially fatal complications that accompany acute diarrhea during concomitant infection with c. parvum.
Limitations of selective deltamethrin application for triatomine control in central coastal Ecuador
Mario J Grijalva, Anita G Villacís, Sofía Oca?a-Mayorga, César A Yumiseva, Esteban G Baus
Parasites & Vectors , 2011, DOI: 10.1186/1756-3305-4-20
Abstract: Surveys for triatomines revealed peridomestic infestation with Rhodnius ecuadoriensis and Panstrongylus howardi, with infestation indices remaining high during the study (13%, 17%, and 10%, at initial, 6-month, and 12-month visits, respectively), which indicates a limitation of this strategy for triatomine population control. Infestation was found 6 and 12 months after spraying with deltamethrin. In addition, a large number of previously vector-free domestic units also were found infested at the 6- and 12-month surveys, which indicates new infestations by sylvatic triatomines. The predominance of young nymphs and adults suggests new infestation events, likely from sylvatic foci. In addition, infection with Trypanosoma cruzi was found in 65%, 21% and 29% at initial, 6-month and 12-month visits, respectively. All parasites isolated (n = 20) were identified as TcI.New vector control strategies need to be devised and evaluated for reduction of T. cruzi transmission in this region.Chagas disease in Ecuador affects approximately 230,000 people, and 6.2 million people are at risk of infection by Trypanosoma cruzi, its causative agent [1]. In the absence of satisfactory therapy or vaccines against Chagas disease, control of the disease relies primarily on interrupting transmission by eliminating domestic populations of triatomines. Triatomines Rhodnius ecuadoriensis and Panstrongylus howardi are important vectors of Chagas disease in the Manabí province, located on the central coast of Ecuador, and there is evidence of host (vectors and reservoirs) infected with T. cruzi, circulating in the area [2-6].R. ecuadoriensis is widely distributed in Ecuador's central and southern coast [7], its southern Andean region, and in northern Perú [3]. In the coastal region, R. ecuadoriensis is usually found in association with Phytelephas aequatorialis, an endemic palm species, [5,8] and in nests of squirrel (Sciurus stramineus) and bird (Campylorhynchus fasciatus) [6]. In this region, th
Larval habitat of Ochlerotatus albifasciatus (Diptera: Culicidae) in the southern edge of the Americas, Tierra del Fuego Island  [PDF]
Nora Edith Burroni, María Verónica Loetti, María Cristina Marinone, María Gabriela Freire, Nicolás Schweigmann
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.34A1002
Abstract: The information about ecological topics of mosquitoes at the southernmost tip of South America is fragmentary and scarce. The present study evaluates lentic freshwater habitat located in the surroundings of main roads of the Argentine sector of Tierra del Fuego as larval habitat of Ochlerotatus albifasciatus, also analyzes the relationships between their presence and several environmental variables: water turbidity, percentage of gramineans, percentage of macrophytes, presence of crustaceous cyanobacteria, and filamentous chlorophyceans. Mosquito inmatures were collected with dip nets. A generalized linear model (GLM) with negative binomial error distribution was used to determine the effects of different variables of the water bodies on abundance of Oc. albifasciatus in the larval habitats. Collections were made in 45 lentic freshwater bodies. Preimaginal stages were found in 17.70% of the studied habitats. Oc. albifasciatus was the only culicid registered. The GLM explained 93.17% of the variability, and showed a negative relationship between the abundances of Oc. albifasciatus and water turbidity, and a positive relationship with percent-age of gramineans. The gramineans would improve food supply, because the plants are providing suitable substrate for different types of microbiota, a layer of leaves would protect eggs from extreme temperatures, and could help the larvae to hide from potential predators. The negative association between abundance of this species with water turbidity could be related to the presence of vegetation that favors retaining the substrate, reducing water turbidity.
On Complete Bicubic Fractal Splines  [PDF]
Arya Kumar Bedabrata Chand, María A. Navascués
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.13024
Abstract: Fractal geometry provides a new insight to the approximation and modelling of experimental data. We give the construction of complete cubic fractal splines from a suitable basis and their error bounds with the original function. These univariate properties are then used to investigate complete bicubic fractal splines over a rectangle Bicubic fractal splines are invariant in all scales and they generalize classical bicubic splines. Finally, for an original function , upper bounds of the error for the complete bicubic fractal splines and derivatives are deduced. The effect of equal and non-equal scaling vectors on complete bicubic fractal splines were illustrated with suitably chosen examples.
Ecos recientes de un debate inconcluso acerca de la Revolución Agrícola en Inglaterra y de la transformación de su economía agraria entre 1500 y 1850
Carzolio,María Inés;
Mundo agrario , 2006,
Abstract: the debate about the existence, chronology and factors of an "agricultural revolution" that proceed and its related to the "industrial revolution" has a long history. the substantive topics of this debate keep a central importance to comprehend the development of the agriculture as much as the english economy between 1500th and 1850th centuries. in this time it has been configured a traditional version and a revisionist version. its possible at this length to made a confrontation of both interpretations using the work of two mayor authors: marc overton and robert c. allan.
El debate en torno a la representación de acontecimientos límite del pasado reciente: alcances del testimonio como fuente
Mudrovcic, María Inés;
Diánoia , 2007,
Abstract: in recent debates about the scope of historical representation for giving a proper account of events beyond the limits of human comprehension and experience, some theorists and historians have tended to favor the immediacy of lived experience -which apparently would be transmitted by the witness. the retrospective point of view, then, has been obscured. the latter point of view implies a degree of detachment from lived experience and is present not only in testimony but also in historiography. this article will thus analyze the role played by testimony in a theory of history, as "evidence or proof of" real past or as "access" to it.
Tópicos y arquetipos de la opinión pública: la construcción social de la enfermera
Games,María Inés;
Enfermería Global , 2011, DOI: 10.4321/S1695-61412011000200018
Abstract: the inquiry attempts to show the suffering and neglect of women in a period of history. it links being a woman and her relationship with the nursing discipline, as nursing from the outset has been an essentially feminine activity. the female nurse, united with religion, in other instances was conceived socially as a martyr. in certain socio cultural times it has been socially important to transmit the good social habits of women. the corollary denominator is the feeling of giving of themselves to others in order to feel useful and to help society. it makes mention of women who as "women" introduced changes of historical importance in the nursing profession. it shows the strength of public opinion in the construction of archetypes and stereotypes in society in terms of the nurse and women. feminism is mentioned as a social movement for women, along with some concepts and the fact that it is a movement that provoked socio-cultural changes for women. women in general condemned to submission and privacy, but who break through and participate in public life.
La rehabilitación de la noción de representación en Toulmin (o un intento de reformular a Kant en términos wittgensteInianos)
Prono,María Inés;
T?3picos , 2004,
Abstract: as opposed to the anti-representationalist positions, this work presents toulmin's analysis. the author considers that the notion of representation is indispensable to understand the nature of cognitive activity. he shares with kant the idea that our intellectual activities impose a priori forms, but he points out that the use of the german word vorstellung in kant's work caused his transcendental goal to get trapped in the webs of mental representations. the notion of representation he handles, mediated by the wittgensteinian pragmatic turn, is too complex to be reduced to a mere linguistic expression, or to any individual mental content. the adoption of this representational strategy does not entail any commitment to the ontological realist claim "to describe reality as it is in itself", neither to the semantic realist thesis of direct reference. pragmatic considerations about the relations between knowledge, language and action provide an alternative that overcomes reductive positions.
Otto neurath: relevancia y actualidad de su concepción pluralista de la racionalidad
Prono,María Inés;
T?3picos , 2010,
Abstract: la re-evaluación del empirismo lógico ha permitido poner en cuestión la visión tradicional, que, además de atribuir al mismo unidad doctrinaria, lo hacía aparecer como defendiendo un ingenuo empirismo fundamentista fortalecido lógicamente.en este trabajo se indaga sobre la concepción pluralista de la racionalidad en otto neurath, partiendo del supuesto de que esta aproximación permite, por una parte, se?alar las limitaciones de la visión tradicional sobre el empirismo lógico y, por otra, mostrar la relevancia y actualidad de la propuesta del mencionado autor. dividimos nuestro análisis en tres partes: (i) ciencia unificada y pluralismo; (ii) concepción pragmática, razón y decisión; (iii) unidad de razón teórica y práctica. este recorrido nos permitirá evaluar algunas tensiones internas a la perspectiva de neurath y también su concepción pluralista y pragmática de la racionalidad, en la que se aprecia la articulación de conocimiento, lenguaje y acción, tan característica del 'giro pragmático' de la filosofía contemporánea.
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