Time filter

Source Type

Vina del Mar, Chile

Viña del Mar University is an autonomous, private institution of higher education recognized by the Ministry of Education of Chile. It was founded on November 21, 1988. Wikipedia.

Araneda O.F.,University of Los Andes, Chile | Tuesta M.,Vina del Mar University
Oxidative Medicine and Cellular Longevity

One of the most important functions of lungs is to maintain an adequate oxygenation in the organism. This organ can be affected by hypoxia facing both physiological and pathological situations. Exposure to this condition favors the increase of reactive oxygen species from mitochondria, as from NADPH oxidase, xanthine oxidase/reductase, and nitric oxide synthase enzymes, as well as establishing an inflammatory process. In lungs, hypoxia also modifies the levels of antioxidant substances causing pulmonary oxidative damage. Imbalance of redox state in lungs induced by hypoxia has been suggested as a participant in the changes observed in lung function in the hypoxic context, such as hypoxic vasoconstriction and pulmonary edema, in addition to vascular remodeling and chronic pulmonary hypertension. In this work, experimental evidence that shows the implied mechanisms in pulmonary redox state by hypoxia is reviewed. Herein, studies of cultures of different lung cells and complete isolated lung and tests conducted in vivo in the different forms of hypoxia, conducted in both animal models and humans, are described. © 2012 O. F. Araneda and M. Tuesta. Source

Introduction: There are strong scientific evidences on the benefits of leading an active lifestyle. The most characteristic and inherent physical activity of the human being is walking. This activity is currently promoted by a number of professionals to improve the health status of the population. However, just suggesting "go for a walk" is not enough since a number of steps performed at a certain pace are necessary to induce a series of beneficial effects on the organism. Objectives: The aim of this study was to show the latest advances on this topic so that the population and the patients can received more detailed recommendations when walking is prescribed. Methods: We carried out a literature search in PubMed and Scielo, as well as a manual search among the references of the studies selected. Results: After analyzing the literature, it seems evident that it is important to reach a certain amount of steps during the day in order to improve the people's health, and it also seems essential to suggest the pace at which to walk. Conclusions: "Go for a walk" is a proofed and benefi-cial recommendation for achieving health benefits in the population. However, the health professionals should also suggest reaching a certain pace or minimum intensity in order to assure that their patients achieve the favorable effects on the organism. Source

Cristi-Montero C.,Vina del Mar University | Cristi-Montero C.,University of Chile | Rodriguez R. F.,Pontifical Catholic University of Valparaiso
Revista Medica de Chile

The use of objective methods to measure physical activity and thus assess sedentary lifestyle, may change the definition of individuals as being sedentary or physically active. This situation would also interfere on the benefits of physical activity and the dangerous effects of sedentary lifestyle on health. The aim of this review is to clarify the changes that have recently occurred in this area. These could be included in future health care strategies and recommendations for the population. Source

A new species of nematode, Pseudodelphis chilensis n. sp., is described. This parasite was found in muscles of the pectoral fins of a blenniid fish, Scartichthys viridis, from central Chile. The new species differs from the other 2 described (P. oligocotti Adamson and Roth, 1990 and P. limnicola Brugni and Viozzi, 2006) for its longer glandular esophagus and a small caecum at the beginning of the glandular esophagus; both characteristics are in males and females. In addition, the male of P. chilensis n. sp. does not have an adanal caudal papillae, and it has longer spicules than the other 2 species. This is the first Pseudodelphis species described for Chile and the second for South America. © American Society of Parasitologists 2010. Source

This paper offers an overview of the requirements of serious games to support occupational engagement for people at age 50 and above, and the features for such a serious game. A comprehensive literature revision and a questionnaire to 23 active in the field health professionals of the Valparaiso region (Chile) were performed. In the end, among the various requirements stated, primary requirements were the evaluation of adaptation skills and organizing space and objects skills as well as of information exchange skills and coordination skills, with respect to occupation-based interventions and routines within a social context. Afterwards, some primary features were stated, such as the use of intelligent tutoring systems, adaptability, difficulty balance, real-time strategy, non linear stories, and spatial, temporal and adversaries reasoning. In the discussion about the features, issues of purpose, strategy and the personalization of a serious game for people aged 50 and older were specified in detail. Source

Discover hidden collaborations