Listar INVESTIGACIÓN por fecha de publicación
Mostrando ítems 1-20 de 2524
-
Interspecific recognition in Chilean parabiotic ant species
(CIENCIAS, 2003)In Chile, Camponotus morosus and Solenopsis gayi sometimes co-inhabit a single nest, seemingly in a parabiotic association. To elucidate the nature of this association we conducted behavioural tests that measured aggression ... -
Multiple macrodontic multituberculism
(CIENCIAS, 2003)Ekman-Westborg and Julin [1974: Oral Surg 38:217-222], described multiple macrodontia and multituberculism affecting the teeth without other anomalies (E-WJ). We describe a Chilean case in a 12-year-old with the typical ... -
Matrix metalloproteinase 9 in the saliva of patients with Sjogren's syndrome: comment on the article by Goicovich et al - Reply
(CIENCIAS, 2004)To The Editor: We would like to thank Drs. Konttinen and Azuma fortheir interesting comments concerning some of the observa-tions in our recently published article. We will focus here on 3specific issues raised, namely the ... -
Comparative study of mouthparts of three species of horse flies of the tribe Pangoniini of Chilean distribution (Diptera: Tabanidae)
(CIENCIAS, 2004)Mouthparts of 3 species representing Esenbeckia Rondani, Protodasyapha Enderlein, and Veprius Rondani of the tribe Pangoniini were examined by scanning electron microscopy (SEM), and their structures are herein described. ... -
Invasive fungal infections in Chile: a multicenter study of fungal prevalence and susceptibility during a 1-year period
(CIENCIAS, 2004)During the first year of an ongoing surveillance program of invasive fungal infections (IFI) a total of 130 patients (56% male) with fungal strains isolated from blood and other sterile sites were reported from 13 hospitals ... -
Lung oxidative stress as related to exercise and altitude. Lipid peroxidation evidence in exhaled breath condensate: a possible predictor of acute mountain sickness
(CIENCIAS, 2005)Lung oxidative stress (OS) was explored in resting and in exercising subjects exposed to moderate and high altitude. Exhaled breath condensate (EBC) was collected under field conditions in male high-competition mountain ... -
Prevalence of clinical attachment loss in adolescents in Santo Domingo, Dominican Republic
(CIENCIAS, 2005)Background: Data on periodontal conditions in adolescents in the Dominican Republic are scarce. The aim of the present crosssectional study was to estimate the prevalence of periodontal attachment loss among Dominican ... -
Predictive factors in infraorbital sensitivity disturbances following zygomaticomaxillary fractures. International
(CIENCIAS, 2005)The aim of this study was to define if the alterations in sensory modalities could be a predictive factor in the prognostic recovery of the ION. Ten patients that had suffered facial trauma, associated with sensitivity ... -
Adherencia al tratamiento en adolescentes diabéticos tipo 1 chilenos: una aproximación psicológica
(CIENCIAS, 2005)Background: Treatment compliance among patients with type 1 diabetes mellitus, is low in 50% of diabetic teenagers, becoming a social and medical problem. Aim: To determine psycho-social factors associated to treatment ... -
Increased acinar damage of salivary glands of patients with Sjogren's syndrome is paralleled by simultaneous imbalance of matrix metalloproteinase 3/tissue inhibitor of metalloproteinases 1 and matrix metalloproteinase 9/tissue inhibitor of metalloproteinases 1 ratios
(CIENCIAS, 2005)OBJECTIVE: Previous findings in labial salivary glands (LSGs) from patients with Sjögren's syndrome (SS) suggest that increased activity and expression of matrix metalloproteinase 9 (MMP-9) and MMP-3 trigger the destruction ... -
Longitudinal analysis of metalloproteinases, tissue inhibitors of metalloproteinases and clinical parameters in gingival crevicular fluid from periodontitis-affects patients
(CIENCIAS, 2005)BACKGROUND: The aim of this work was to improve the assessment of the periodontal disease status through measurements of extracellular matrix metalloproteinases (MMPs) and their tissular inhibitors (TIMPs) in the gingival ... -
Morbilidad y mortalidad por cáncer oral y faríngeo en Chile
(CIENCIAS, 2005)Background: Most oral cancers are squamous cell carcinomas (90%) which are two to four times more common in men than in women. The reasons for these differences are associated with exposure to factors such as tobacco and ... -
Diferencias individuales en dietantes crónicos: Influencia de los sistemas motivacionales en la alimentación
(CIENCIAS, 2005)Background: Restrained eaters (RE) are individuals who restrain their food intake on a regular basis as they are frightened to gain weight. However, they tend to overeat under conditions of anxiety. It has been shown that ... -
Respuesta a la selección para producción láctea de toros Holstein de Estados Unidos en las provincias de Bío-Bío y Malleco, Chile
(CIENCIAS, 2005)Se estimó la respuesta de toros Holstein de Estados Unidos, seleccionados por producción láctea, en las provincias de Bío- Bío y Malleco, con el propósito de disponer de elementos que permitan determinar la rentabilidad ... -
Modulación de la actividad de la corteza prefrontal como mecanismo putativo del cambio en psicoterapia
(CIENCIAS, 2005)The prefrontal cortex (PFC) it is defined as the cortical cerebral region reciprocally connected with dorsolateral nucleus of thalamus. Traditional accounts derived from behavioral sciences had ascribed to the PFC a key ... -
Involvement of specific laminins and nidogens in the active remodeling of the basal lamina of labial salivary glands from patients with Sjogren's syndrome
(CIENCIAS, 2006)OBJECTIVE: To investigate remodeling of the basal lamina of labial salivary glands (LSGs) from patients with Sjögren's syndrome (SS) by analyzing the expression of specific components that participate in its assembly and ... -
Basal lamina disorganisation of the acini and ducts of labial salivary glands from patients with Sjogren's syndrome: association with mononuclear cell infiltration
(CIENCIAS, 2006)Objective: To study the expression of laminin and type IV collagen as biomarkers of the organisation of the basal lamina of acini and ducts in labial salivary glands from patients with Sjögren’s syndrome, and to relate ... -
Pioderma gangrenosa en cirugía plástica: Comunicación de tres casos
(CIENCIAS, 2006)Pyoderma Gangrenosum is a rare disease whose etiology is probably autoimmune. We report two males aged 48 and 49 years and one female aged 54 years, with lesions in the right thigh, right leg and in the borders of a surgical ... -
Giant mandibular bone defect: Report of a case
(CIENCIAS, 2006)In 1942 Edward Stafne1 described a series of 35 cases of asymptomatic radiolucent bone cavities next to the mandibular angle. The cavities seemed to be spheric.PERIHUEICO or elliptic monolocular radiolucencies, well defined, ... -
Hypoxia-related lipid peroxidation: Evidences, implications and approaches
(CIENCIAS, 2007)Hypoxia may be intensified by concurrent oxidative stress. Lack of oxygen in relation to aerobic ATP requirements, as hypoxia has been defined, goes along with an increased generation of reactive oxygen species (ROS). ...