Santiago Miahuatlan, Mexico

University of the South Sierra
Santiago Miahuatlan, Mexico
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Cabrera-Pivaral C.E.,University of Guadalajara | Ramirez-Garcia S.A.,University of the South Sierra | Zavala-Gonzalez M.A.,University of Guadalajara
Revista de Salud Publica | Year: 2016

Objective: To measure the effect of an educational intervention on clinical competences for diagnosis and treatment of rheumatic diseases in primary healthcare physicians working in the Guadalajara Metropolitan Area, Jalisco, Mexico. Methodology: Quasi-experimental study conducted in physicians from two primary health care units. The study was carried out in a 40 physicians sample, 21 in Group “A” (intervention) and 19 in Group “B” (control). The clinical competence for diagnosis and treatment of rheumatic diseases was measured in both groups by means of an instrument previously designed and validated (Kuder-Richardson reliability index =0,94). Results: Clinical competence average score prior to intervention was 47 for Group “A” and 42 for Group “B”, while after the intervention it was 72 and 47 respectively, which shows statistically significant differences (Wilcoxon test, p<0,05). Conclusions: Clinical competence for diagnosis and treatment of rheumatic diseases in primary healthcare physicians is low; however, it can be improved by implementing educational interventions based on a constructivist approach. © 2016, Universidad Nacional de Colombia. All rights reserved.

Martinez-Sanchez A.,University of the South Sierra
Revista medica del Instituto Mexicano del Seguro Social | Year: 2015

Recent outbreaks of emerging diseases emphasize the vulnerability of health systems, as is the case of chikungunya fever. The wide geographical incidence of the virus in the last years requires alerting systems for the prevention, diagnosis, control and eradication of the disease. Given the ecological, epidemiological and socio-economic characteristic of Mexico, this disease affects directly or indirectly the health of the population and development of agricultural, livestock, industrial, fishing, oil and tourism activities in the country. Due to this situation it is essential to make a brief analysis on the main clinical data, epidemiological and preventive measures with which our country counts with to confront the situation.Los recientes brotes de enfermedades emergentes acentúan la vulnerabilidad de los sistemas de salud, tal es el caso de la fiebre chikunguña. La amplia incidencia geográfica del virus en los últimos años obliga a alertar a los sistemas para la prevención, diagnóstico, control y eliminación de la enfermedad. Dadas las condiciones ecológicas, epidemiológicas y socioeconómicas que caracterizan a México, esta enfermedad afectará de manera directa o indirecta la salud de la población, así como el desarrollo de las actividades agrícolas, ganaderas, industriales, pesqueras, petroleras y turísticas del país. Bajo este panorama es indispensable realizar un breve análisis sobre los principales datos clínicos y epidemiológicos, así como de las medidas de prevención con las que cuenta nuestro país para confrontar dicha situación.

Villa-Ruano N.,University of the South Sierra | Pacheco-Hernandez Y.,Research Center en Biotecnologia Aplicada | Cruz-Duran R.,National Autonomous University of Mexico | Lozoya-Gloria E.,CINVESTAV | Betancourt-Jimenez M.G.,CINVESTAV
Journal of Food Science and Technology | Year: 2017

Begonia nelumbiifolia is a traditional edible plant consumed and commercialized in the northern highlands of Puebla, México. The present study reports the seasonal variation in proximate analysis as well as organic acids, carotenoids and flavonoids content in both leaves and stalks of this plant. The stalks contained low concentrations of protein (~3%), fiber (~1.5%) and nitrogen free extract (~0.26%) during the time of study. Both organs showed contents of oxalic acid (91–103 mg 100 g−1 FW), ascorbic acid (50–65 mg 100 g−1 FW), lutein (1–2.5 mg 100 g−1 FW), β-carotene (1–3 mg 100 g−1 FW), quercetin (1.3–2.7 mg 100 g−1 DW) and rutin (0.5–1.7 mg 100 g−1 DW). Antioxidant activity against DPPH was observed by the stalk extracts from 30% methanol (IC50, 0.21–0.37 mg L−1), pure methanol (IC50, 0.14–0.21 mg L−1) and hexane: acetone (IC50, 0.77–1.21 mg L−1). In vitro anti-HMG-CoA reductase (IC50, 0.07–0.36 mg L−1) and anti-alpha-glucosidase (IC50, 0.28–0.43 mg L−1) activities were observed in extracts from the edible stalks from pure methanol and 30% methanol. The leaf extracts from 30% methanol inhibited the growth of Pseudomonas syringae pv. tabaci TBR2004 (MIC, 254 µg mL−1), P. syringae pv. tomato DC3000 (MIC, 423 µg mL−1), P. syringae pv. glycinea (MIC, 605 µg mL−1) and Clavibacter michiganensis AB299158 (MIC, 162 µg mL−1). B. nelumbiifolia contained valuable phytochemicals associated to nutraceutical and biological properties. However, the consumption of the fresh stalks must be carefully considered because of the high oxalate content. © 2017 Association of Food Scientists & Technologists (India)

Alavez-Ramirez R.,Grupo Mexico | Alavez-Ramirez R.,Technological Institute of Oaxaca | Montes-Garcia P.,Grupo Mexico | Martinez-Reyes J.,ESFM IPN Escuela Superior de Fisica y Matematicas | And 3 more authors.
Construction and Building Materials | Year: 2012

This study analyzes the use of lime and sugar cane bagasse ash (SCBA) as chemical stabilizers in compacted soil blocks. The blocks were tested for flexure and compression in a dry and a saturated state. The tests were performed at 7, 14 and 28 days of age in order to evaluate the effects of the addition of lime and SCBA on the mechanical properties of the compacted soil blocks. The results indicate that blocks manufactured with 10% of lime in combination with 10% of SCBA showed better performance than those containing only lime. Nevertheless, the addition of lime improved the strength of the blocks when compared with blocks fabricated with plain soil. According to SEM and DRX analyses, considerable improvement of the matrix was observed due to the formation of strong phases, such as CSH and CAH for the mixtures with additives. It was also concluded that the combination of SCBA and lime as a replacement for cement in the stabilization of compacted soil blocks seems to be a promising alternative when considering issues of energy consumption and pollution. © 2012 Elsevier Ltd. All rights reserved.

Martinez-Pelaez R.,University of the South Sierra | Rico-Novella F.,Polytechnic University of Catalonia | Velarde-Alvarado P.,Autonomous University of Nayarit
Revista Facultad de Ingenieria | Year: 2013

Recently, Chen-Hsiang-Shih proposed a new dynamic ID-based remote user authentication scheme. The authors claimed that their scheme was more secure than previous works. However, this paper demonstrates that their scheme is still unsecured against different kinds of attacks. In order to enhance the security of the scheme proposed by Chen-Hsiang-Shih, a new scheme is proposed. The scheme achieves the following security goals: without verification table, each user chooses and changes the password freely, each user keeps the password secret, mutual authentication, the scheme establishes a session key after successful authentication, and the scheme maintains the user's anonymity. Security analysis and comparison demonstrate that the proposed scheme is more secure than Das-Saxena-Gulati's scheme, Wang et al.'s scheme and Chen-Hsiang-Shih.

Garcia-Garcia L.M.,University of the South Sierra
ACM International Conference Proceeding Series | Year: 2016

The objective of this research is to analyze two important aspects: first is the centrality of the user in e-Government projects and the second is e-government processes associated with migration. Regarding the former, studies of e-government have not addressed in depth the centrality of the citizen. They have partially studied some way, either from the supply side or the demand side, so this study aims to analyze the three elements: organizational process, web portal, and necessities and capabilities from the perspective of the citizen. Furthermore, this study aims to address migration issues, in particular the modernization of National Institute of Migration at the Mexico's southern border, in Tapachula Chiapas the border with Guatemala, specifically with those migrants who came to Mexico for labor objectives. Copyright is held by the owner/author(s).

Type 2 diabetes mellitus is a complex disease and a global health problem. Therefore, the first level of health care should handle the approaches of medical genetics and genomics to reduce its incidence. The aim is to present perspectives analyzed by our group in two areas of genetics and its clinical application. Emphasis is placed on the coexistence of several genetic forms clinically detectable in patients with diabetes, missing heritability associated with low penetrance, and epigenomics mechanism. It is discussed the effect of genetic variation associated with resistance to insulin, beta-cell dysfunction, shaft incretin, and other points of interest, such as thrifty genotype hypothesis, conformational disease, genetically unknown foods, phenocopies as clinically silent hypercortisolism, molecular phytopharmacology in the clinical management. Finally, the result was displayed in the Mexican population from genetic studies and new findings of clinical importance, such as involvement of melatonin and effect of variations in the number of copies in a genomic region.

Villa-Ruano N.,University of the South Sierra | Lozoya-Gloria E.,CINVESTAV
Boletin Latinoamericano y del Caribe de Plantas Medicinales y Aromaticas | Year: 2014

Species from the Montanoa genus have been used for hundreds of years in Mexican traditional medicine. The Náhuatl name given by Aztecs to this plant was “cihuapahtli”, meaning “woman’s medicine” (cihua, woman; pahtli, medicine), because M. tomentosa has been used to treat female health disorders since pre-Hispanic times due to its uterotonic properties. Later on, the Spanish pronunciation transformed the word into “zoapatle”, the name still used by herb sellers in México. Despite its use in folk medicine, intensive scientific research on this plant did not begin until the early 1970’s. The only two available reviews exclusively focused on the Montanoa species cover the period from 1529 to 1985. However, in the last two decades, important phytochemical, biochemical and biotechnological advances were achieved. This is a review of the history, botany, most relevant chemistry, biological activity and biotechnology of the secondary metabolites from the Montanoa genus so far. © 2014.

De Jesus Mijangos Martinez T.,University of the South Sierra
CEUR Workshop Proceedings | Year: 2011

Universal Grammar assumes that all human languages share a common structure with respect to their linguistic well-formedness conditions. In the linguistic theory called Optimality Theory (OT), this structure is represented by a set of linguistic candidate forms, a set of constraints and the definition of being optimal. From a nativist approach of OT is assumed that such structure is encoded in a Language Acquisition Device (LAD) that is provided to the learner of a language genetically. While OT is in a symbolic level, the LAD is in a biological one. These two levels have already been complemented with a connectionist intermediate level. In this paper our aim is to propose a complementary connection between the symbolic and the connectionist levels using penalty logic. We propose a translation from connectionism to logic expressed in the penalty knowledge base cv. This last translation try to simplify the encoding of the common structure it suggested by CVnet.

PubMed | University of the South Sierra and University of Guadalajara
Type: Journal Article | Journal: Revista panamericana de salud publica = Pan American journal of public health | Year: 2017

Estimate whether there is an association between the (CAG)n repeat in the ATXN2 gene in the Mexican population and type 2 diabetes mellitus (DM).Epidemiological case-control study, including healthy people and diabetics. (CAG)n expansion was detected by end-point polymerase chain reaction (PCR). PCR outputs were analyzed by electrophoresis (PAGE 8%) and silver nitrate staining.(CAG)n nucleotide allele distribution in the study population was similar to that reported in central Mexico. The 22-repeat allele is the most frequent; however, there is an association with carriers of long repeats in the normal range with diabetes.The results suggest that the (CAG)n repeat of the ATXN2 gene could be a causal factor for type 2 DM.

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