Repositorio Académico de la Universidad de Chile: Recent submissions
Now showing items 42881-42900 of 99437
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(1997)5'-Capping is an early mRNA modification that has important consequences for downstream events in gene expression. We have isolated mammalian cDNAs encoding capping enzyme. They contain the sequence motifs characteristic ...
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(1997)Previous studies in enterocytes isolated from the villus region of small intestinal epithelium have identified a macroscopic current carried by Cl. In this work a single-channel patch-clamp study was carried out in the ...
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(Entomological Society of America, 1997)Preferred temperature and activity patterns of Triatoma infestans Klug and Triatoma spinolai Porter were studied, both are vectors of Chagas' disease in Chile. In the laboratory, 24 T. spinolai and 18 T. infestans were ...
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(1997)Most copper bioleaching plants operate with a high concentration of sulfate salts caused by the continuous addition of sulfuric acid and the recycling of the leaching solution. Since the bacteria involved in bioleaching ...
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Effect of captopril on voluntary consumption of ethanol, water and solid food by UChA and UChB rats (1997)Angiotensin converting enzyme inhibitors (ACEI) have been reported to reduce ethanol consumption in rats, but it is unclear whether this effect is specific for ethanol or secondary to effects on appetite or satiation for ...
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(1997)We report here that exposing cultured chromaffin cells to a low ionic strength medium (with sucrose in place of NaCl to maintain osmolarity) can induce a marked elevation in cytosolic Ca 2+ concentration ([Ca 2+](i)) and ...
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Nicotonic and muscarinic components in acetylcholine stimulation of porcine adrenal medullary cells (1997)Adrenal medullary chromaffin cells secrete catecholamines (CA) in response to cholinergic receptor activation by acetylcholine (ACh) released from splacnic nerve terminals. In cultured bovine chromaffin cells nicotinic ...
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(1997)We have investigated whether IP 3 metabolism presents particular changes during critical stages of muscle development. With this aim, we have measured IP 3 formation through phospholipase C activity, IP 3 removal through ...
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(1997)Background: Metformin is a biguanide often used in obese diabetics that improves tissue sensitivity to insulin. Aim: To assess the effects of metformin on tissue insulin sensitivity in obese and hyperandrogenic women. ...
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(1996)Short-latency somatosensory evoked potentials (SSEPs) were recorded from 10 parkinsonian patients in ‘off and ‘on’ states induced by apomorphine and levodopa. The effects of apomorphine and long-term levodopa treatment on ...
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(Elsevier Ireland Ltd, 1996)Cord sera were obtained from term, Chilean newborns exhibiting various patterns of intrauterine growth and assayed for IGF-1, IGF-2, IGFBP-1, IGFBP-2, and IGFBP-3 by specific radioimmunoassays (RIA). Serum levels of each ...
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(1995)The karyotypes of three cloned stocks, CL Brener (CL), CA I/72 (CA) and Sylvio X10/7 (X10), of Trypanosoma cruzi were studied by pulsed-field gel electrophoresis followed by ethidium bromide staining and hybridization with ...
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(1995)The subcellular distributions of the mammalian passive glucose transporter isoforms GLUT1, GL UT3 and GL UT4, in the human placenta, there investigated using isoform-specific anti-peptide antibodies. On western blots of ...
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(1995)Triads isolated from frog and rabbit skeletal muscle were equilibrated with different external [Ca2+], ranging from 0.025 to 10 mM. Vesicular calcium increased with external [Ca2+] as the sum of a linear plus a saturable ...
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(1995)Acute suppression of SRIH secretion with a β-adrenergic antagonist can increase the GH response to GHRH.To determine whether chronic β-blockade could enhance the growth-promoting effects of GHRH therapy, we conducted a ...
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(1995)Thd investigate the genetic background of human T‐cell leukemia virus type I (HTLV‐I) and II (HTLV‐IIhd carriers among South American native Indians, we analyzed HLA DRBI*‐DQBI * haplotypes of the virus carriers from Andes ...
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(1995)A DNA polymerase was purified to near homogeneity from Trypanosoma cruzi epimastigotes. This preparation had a major polypeptide of 50 kDa and a minor band of 45 kDa. SDS-PAGE studies and a novel colorimetric activity gel ...
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(1995)Dibekacin pharmacokinetics was studied in 3 healthy volunteers, 5 patients with renal failure presenting Cl(cr), between 4.0 and 67 ml min-1 per 1.73 m2 of body surface and 5 anephric patients given as a 30 minute intravenous ...
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(1994)Summary. Epididymal sperm maturation in the stallion was analysed using eight epididymides and deferent ducts from healthy animals. Samples were obtained in June‐July and October‐November (resting and breeding periods, ...
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(1995)The occurrence of phagocytosis of spermatozoa in the epididymis is a controversial issue in male reproductive biology. In this paper we documented, by scanning and electron microscopy, the presence of spermatophages in the ...
