Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 42741-42760 of 101786
-
(2008)Background: Despite a better management of the variables that influence the development of diabetic nephropathy, there is a progressive increase in the prevalence of terminal renal failure among diabetics, whose cause is ...
-
(2008)Protein kinase CK2 (also known as casein kinase 2) is present in the cytoplasm, nuclei, and several other organelles. In addition, this enzyme has been found bound to the external side of the cell membrane where it acts ...
-
(2008)Inflammatory bowel diseases (IBD) are inflammatory diseases with a multifactorial component that involve the intestinal tract. The two relevant IBD syndromes are Crohn's disease (CD) and ulcerative colitis (UC). One factor ...
-
(2008)This work pretends to find the best practices in public and private management and to show how leadership influences the effectiveness in different types of organizations. A sample of 64 managers of public institutions and ...
-
(2004)A call of attention is made over the possible introduction of red tilapia (Oreochromis sp.) for aquaculture in Chile. The so-called monosex (all male) culture, considered by some as the solution for unwanted reproduction ...
-
(2004)Studies in fish and amphibia have shown that graded Bmp signalling activity regulates dorsal-to-ventral (DV) patterning of the gastrula embryo. In the ectoderm, it is thought that high levels of Bmp activity promote epidermal ...
-
(2004)In seven mammalian species, including man, the position and number of nucleoli in pachytene spermatocyte nuclei were studied from electron microscope (EM) nuclear sections or bivalent microspreads. The number and position ...
-
The dorsal diencephalic conduction system of zebrafish as a model of vertebrate brain lateralisation (2004)Lateralisation is an attractive and intriguing feature of the vertebrate CNS studied for decades in the different disciplines of the neurosciences. Due to the complexity of the phenomena and intrinsic limitations of the ...
-
(2004)The hypothesis that independently of sex, brain volume (BV) and head circumference (HC) are positively and significantly associated with intellectual quotient (IQ) was examined in a sample of 96 high school graduates of ...
-
(Universidad de la Frontera, 2007)Boron is a chemical element widely used in many industrial activities. Exposure to it affects many organs in mammals, mainly reproductive male organs. This work evaluates boron effect in testis. For this purpose, 12mg ...
-
(2008)The acrosome is a secretory vesicle located in the mammalian sperm head. Its main function is to transport hydrolytic enzymes. These enzymes will dissolve the zona pellucid, assisting the sperm in fertilizing the egg. The ...
-
(2004)Nasal reconstruction has been analyzed extensively in adults but not in children. The purpose of this article is to review the authors' experience with the forehead flap for nasal reconstruction in 10 children under the ...
-
(2004)In the presence of a suitable substratum the lecithotrophic larvae of the bryozoan Bugula flabellata preferentially settle within the first six hours after hatching, whereas a marginal percentage of them (≈ 1 %) delay ...
-
(2004)Habitat fragmentation is commonly associated to a reduction in plant fitness, because the reduction in the number of seeds produced. However habitat fragmentation might also affect plant fitness through a reduction in the ...
-
(2008)OBJECTIVES: Simple renal cysts (SRC) are usually asymptomatic and do not require any kind of treatment. Laparoscopy is a reasonable minimally invasive surgical option for symptomatic cysts. Herein, we present the results ...
-
(2004)Objective: To investigate the influence of -308 tumour necrosis factor-α (TNF-α) promoter polymorphism and circulating TNF-α levels in the clinical response to the infliximab treatment in patients with rheumatoid arthritis ...
-
(Elsevier B.V., 2004)Pretreatment with the α2-adrenoceptor agonist clonidine (31.25, 62.5, or 125 μg/kg, i.p.) dose-dependently reduced long-term potentiation (LTP) elicited in vivo in the occipital cortex of anesthetized rats, whereas ...
-
(2008)Background: Specific language impairment (SLI) occurs in 2% to 8% of preschool children. Major and candidate genes are probably involved. Genetic drift is a cause for the presence of high frequencies of deleterious alleles ...
-
(2008)Background: Hormonal changes, prolonged fasting due to vomiting and some medications used during pregnancy, may cause an acute crisis of porphyria, sometimes unveiling a latent disease. Porphyria may also affect the evolution ...
-
(Sociedad Medica de Santiago, 2008)Background: Primary angioplasty is considered the best reperfusion therapy in the treatment of ST-segment elevation myocardial infarction (STEMI). However, thrombolysis is the reperfusion method most commonly used, due to ...
