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( Salas Marina Miguel Angel ),( Miguel Angel Silva Flores ),( Mayte Guadalupe Cervantes Badillo ),( Maria Teresa Rosales Saavedra ),( Maria Auxiliadora Islas Osuna ),( Sergio Casas Flores ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.7
To deal with pathogens, plants have evolved sophisticated mechanisms including constitutive and induced defense mechanisms. Phytohormones play important roles in plant growth and development, as well as in the systemic response induced by beneficial and pathogen microorganisms. In this work, we identified an Aspergillus ustus isolate that promotes growth and induces developmental changes in Solanum tuberosum and Arabidopsis thaliana. A. ustus inoculation on A. thaliana and S. tuberosum roots induced an increase in shoot and root growth, and lateral root and root hair numbers. Assays performed on Arabidopsis lines to measure reporter gene expression of auxin-induced/ repressed or cell cycle controlled genes (DR5 and CycB1, respectively) showed enhanced GUS activity, when compared with mock-inoculated seedlings. To determine the contribution of phytohormone signaling pathways in the effect elicited by A. ustus, we evaluated the response of a collection of hormone mutants of Arabidopsis defective in auxin, ethylene, cytokinin, or abscisic acid signaling to the inoculation with this fungus. All mutant lines inoculated with A. ustus showed increased biomass production, suggesting that these genes are not required to respond to this fungus. Moreover, we demonstrated that A. ustus synthesizes auxins and gibberellins in liquid cultures. In addition, A. ustus induced systemic resistance against the necrotrophic fungus Botrytis cinerea and the hemibiotrophic bacterium Pseudomonas syringae DC3000, probably through the induction of the expression of salicylic acid, jasmonic acid/ethylene, and camalexin defense-related genes in Arabidopsis.
( Erick Rendon ),( Perla Colunga ),( Miguel Angel Flores ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
We report the case of a young man with systemic leptospirosis and intra-alveolar hemorrhage. A 19-year-old man presented with severe sepsis and a few hours later he developed respiratory failure. Leptospirosis was suspected because of conjuntival suffusion. Refractary septic shock requiring three vasopressors was present and intra- alveolar hemorrhage produced severe acute respiratory distress syndrome (ARDS). A pulmonary artery catheter (PAC) was placed and cor pulmonale developed. Methylprednisolone (MP) was initiated at 1 g/day for fi ve days. Forty-hours after the fi rst dose, ventilatory and multiorganic failure improved. No randomized trials have been performed to prove corticosteroid effi cacy. We consider that even for patients with a risk of high mortality, corticosteroid use should be considered. To our knowledge, this is the fi rst case reporting acute cor pulmonale secondary to ARDS caused by leptospirosis.
( Hector Raul Ibarra Sifuentes ),( Victor Ivan Segura Huicochea ),( Perla Rocio Colunga Pedraza ),( Miguel Angel Flores Caballero ),( Jose Guadalupe Martinez Jimenez ),( Concepcion Sanchez Martinez ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Patients on hemodialysis have a death rate adjusted for age four to fi ve times higher than the general population, so early nephrology referral affects survival, also the presence of hypoalbuminemia, hyperphosphatemia, and anemia. Methods: Descriptive, observational, prospective, Unicentric Trial, involved patients with ESRD who entered the emergency area in a teaching hospital, indicating Interventional Hemodialysis (HI), which were studied for 90 days; Demographic, clinical and laboratory data were collected. Patients were followed by phone call and meeting at 30, 60 and 90 post-HI days. Statistical analysis were realized with SPSS 18 for Windows, performed descriptive statistics and survival by Kaplan-Meier was conducted. Results: In this trial were included 41 patients, mean age 50.59 years (range 17-76 years), 23 men (56.1%). The rating for nephrologist was recorded in 9 (22%). The data results were Albumin, 2.88 ± 0.57 mg/dL, phosphate, 9.48 ± 2.90 mg/dL, Hemoglobin 7.22 ± 1.42 g/dL. From the total of patients, 15 (36.6%) died within 90 days; of which 9 (60.9%) were men; Albumin levels were lower in those who died when compare with the living (2.79 vs 2.93), phosphate levels were higher when compare to living (9.97 vs 9.20); and the level of Hb was higher in those who died (7.5 vs 7.0). Survival rates at 30, 60 and 90 days were 92.7%, 85.4% and 63.4% respectively. Conclusions: Mortality found in this study is high compared with reported worldwide. When the nephrologist referral was analyzed, patients who died were the same as the number of patients without prior reference. Hypoalbuminemia and hyperphosphatemia correlate with mortality, as demonstrated in previous studies. Importantly, in our population, patients who died, had a higher hemoglobin level when compare with survivors.