Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 39521-39540 of 98986
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(2010)Background: There is a correlation between aging and the decrease of plasma levels of vitamin B-12. Aim: To determine the prevalence of vitamin B-12 and folate deficiency and its hematological impact among older adults ...
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(Sociedad Chilena de Obstetricia y Ginecologia, 2009)Background: Fetal growth restriction (FGR) is the result of anomalies that prevent the normal development of the fetus, it is present in about the 5% of births. Objectives: To estimate the frequency of FGR in the Clinical ...
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(Society of Biology of Chile, 2004)Leptin, the product of the ob gene, has been proposed as a metabolic signal that regulates the secretion of GnRH/LH. This may be critical during prepubertal development to synchronize information about energy stores and ...
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(2009)Celiac disease (CD), with a 1% world-wide prevalence, is an enteropathy caused by an autoimmune reaction to gluten in genetically susceptible individuals, that codify for histocompatibility molecules HLA DQ-2/DQ-8. From ...
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(2010)Background: CD4+CD25+Foxp3+ regulatory T cells (Treg) play an essential role in immune tolerance, suppressing responses against self-antigens. Additionally, Treg play an important role in maintaining immunosuppression to ...
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(2010)In cyclosporine-based protocols, everolimus is more effective than azathioprine to reduce acute rejection. Ketoconazole may reduce cyclosporine and everolimus requirements. We compared kidney transplant patients treated ...
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(2010)Renal grafts suffer a progressive decrease in glomerular filtration rate (GFR) because of several factors including calcineurin inhibitor (CNI) nephrotoxicity. Switching CNIs to sirolimus may improve this adverse prognosis. ...
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(2009)Cikutovic, Marcos, Nelson Fuentes, and Eduardo Bustos-Obregón. Effect of intermittent hypoxia on the reproduction of rats exposed to high altitude in the Chilean Altiplano. High Alt. Med. Biol. 10:357-363, 2009.- Environmental ...
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(2009)Background: Community acquired pneumonia (CAP) has a high mortality rate among older people. To increase its treatment efficiency, the Chilean Ministry of Health elaborated a clinical management guideline for CAP. Aim: To ...
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(2010)Syndecans, a family of heparan sulphate proteoglycans that are present in the cell surface are involved in the control of cell proliferation, apoptosis and transformation. Syndecans 1 and 2 have a central role in processes ...
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(2010)It has been argued that trichromatic bees with photoreceptor spectral sensitivity peaks in the ultraviolet (UV), blue and green areas of the spectrum are blind to long wavelengths (red to humans South American temperate ...
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(2009)To determine the content of total iron (TFe) and heme iron (HeFe) in major cuts of meat and principal viscera of bovine origin. 55Fe (30 mCi) was injected into two 4-month-old calves. Triplicate samples of the 12 basic ...
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(Sociedad de Biologia de Chile, 2004)Bufo spinulosus has a wide and fragmented distribution range in Chile (18° to 33° S) along altitudinal and latitudinal gradients. Genetic variation was estimated using RAPD (Random Amplified Polymorphic DNA) markers in 10 ...
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(2010)Objectives: To test the hypothesis that an inverse association exists between socio-economic position and all-cause mortality in a developing country in Latin America. Study design: Prospective cohort study carried out in ...
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(2004)The cultural diversity of Chiloé archipelago's population raises questions about its ethnic origin. To determinate whether this population forms a distinct genetic-cultural entity in relation to continental groups, four ...
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(Walter de Gruyter GmbH, 2009)Small size at birth may result from fetal undernutrition which may occur at different times during gestation. Early postnatal catch-up growth and excess childhood weight gain are associated with an increased risk of adult ...
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(2010)Cortisol availability is modulated by several enzymes: 11β-HSD2, which transforms cortisol (F) to cortisone (E) and 11β-HSD1 which predominantly converts inactive E to active F. Additionally, the A-ring reductases (5α- and ...
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(Sociedad de Biologia de Chile, 2009)Plant regeneration is strongly determined by light and soil moisture differences between habitats; both variables are modified by large-scale forest fragmentation. Several studies have indicated this alteration as the ...
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(2009)The bidirectional relationship that aquaculture has with the environment set limits to the growth this economic activity has in Chile. This condition has generated both technical constraints and environmental as well as ...
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(2009)OBJECTIVES: The experience of a renowned Latin American laparoscopic center is reported and the differences with the open technique are thoroughly discussed. METHODS: During a 7 year period a total of 85 laparoscopic ...
