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Marıa de Lourdes Garcıa-Magana,Julian Gonzalez-Borrayo,Efigenia Montalvo-Gonzalez,Enrique Rudino-Pinera,Sonia G. Sayago-Ayerdi,Jesus Aaron Salazar-Leyva 한국응용생명화학회 2018 Applied Biological Chemistry (Appl Biol Chem) Vol.61 No.4
The aim of this research is the partial characterization of proteases extracted from B. karatas; the isolation and purification of proteases from B. karatas fruits were achieved using precipitation, separation by size exclusion chromatography and anion-exchange chromatography; molecular mass (MM) was determined, and the effect of inhibitors, reducing agents and heat on enzyme activity was analyzed. These proteases were compared with proteases from Bromelia pinguin (B. pinguin) and evaluated under similar conditions. The isolation procedure was adequate; only a few protein bands are present in sodium dodecyl sulfate polyacrylamide gel electrophoresis. Furthermore, zymogram analysis showed protein bands with enzyme activity. Inhibitors, reducing agents and heat were unable to inactivate the proteases extracted from B. karatas and B. pinguin. The semi-purified extracts are a set of proteases with a MM of 66 kDa, but different isoelectric points (3.5–6.5 for B. karatas and 5–9 for B. pinguin), which are found in quaternary structures with proteolytic activity. When denatured, they segment into fragments of approximately 20 and 10 kDa. The data indicate that these plants could be used as sources of proteases since they present good proteolytic activity (21.93 UT for proteases from B. karatas and 43.58 UT for proteases from B. pinguin) and that B. Karatas has potential applications comparable to B. pinguin in the food and health industries.
Experimental validation of the seismic analysis methodology for free-standing spent fuel racks
Alberto Gonzalez Merino,Luis Costas de la Pena,Arturo Gonzalez 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.3
Spent fuel racks are steel structures used in the storage of the spent fuel removed from the nuclear powerreactor. Rack units are submerged in the depths of the spent fuel pool to keep the fuel cool. Their freestandingdesign isolates their bases from the pool floor reducing structural stresses in case of seismicevent. However, these singular features complicate their seismic analysis which involves a transientdynamic response with geometrical nonlinearities and fluid-structure interactions. An accurate estimationof the response is essential to achieve a safe pool layout and a reliable structural design. Ananalysis methodology based on the hydrodynamic mass concept and implicit integration algorithms wasdeveloped ad-hoc, but some dispersion of results still remains. In order to validate the analysis methodology,vibration tests are carried out on a reduced scale mock-up of a 2-rack system. The two rackmockups are submerged in free-standing conditions inside a rigid pool tank loaded with fake fuel assembliesand subjected to accelerations on a unidirectional shaking table. This article compares theexperimental data with the numerical outputs of a finite element model built in ANSYS Mechanical. Thein-phase motion of both units is highlighted and the water coupling effect is detailed. Results show agood agreement validating the methodology.
Berrington de Gonzalez, Amy,Kim, Kwang-Pyo,Smith-Bindman, Rebecca,McAreavey, Dorothea American Heart Association, etc.] 2010 CIRCULATION - Vol.122 No.23
<P>Myocardial perfusion scans contribute up to 20% of the estimated annual collective radiation dose to the US population. We estimated potential future cancer risk from these scans by age at exposure and current frequency of use in the United States.</P>
Prediction of Parental Combination for Introduction of Stay-Green Associated Loci in Wheat
Henrique de Souza Luche, Jose Antonio Gonzalez da Silva, Rafael Nornbe 한국작물학회 2017 Journal of crop science and biotechnology Vol.20 No.2
In wheat, the increase of yield and stability associated traits can be achieved by combining parents containing the stay-green trait and favorable alleles for grain yield. The aim of this work was to analyze the genetic dissimilarity between wheat lines from stay-green and synchronized maturation groups and elite cultivars. Moreover, to propose promising combinations seeking the selection of high-grain yield and high bread-making quality genotypes containing stay-green trait. The experiment was conducted in a randomized block design with three replications in 2003, 2004, and 2005, using sister-lines with the presence and absence of stay-green trait and elite cultivars. Genetic variability exists among wheat strains from the synchronized stay-green maturation group and elite cultivars. Genotypes of maturation group stay-green obtained an average performance superior to the synchronized group. Crosses between stay-green lines and the CEP 29 and BRS 177 cultivars are promising in the selection of genotypes carrying the stay-green trait with high yield and bread-making quality
Red Scrotum Syndrome Treatment with Pregabalin: A Case Series
( Jesus Alberto Cardenas-de La Garza ),( Cesar Daniel Villarreal-villarreal ),( Adrian Cuellar-barboza ),( Ramiro Eugenio Cardenas-gonzalez ),( Nereyda Gonzalez-benavides ),( Luis Gerardo Cruz-gomez ) 대한피부과학회 2019 Annals of Dermatology Vol.31 No.3
Red scrotum syndrome (RSS) (also known as male genital dysesthesia) is a rarely recognized entity characterized by scrotal erythema accompanied by a burning sensation, pain, hyperesthesia/dysesthesia, increased temperature and pruritus. Although its physiopathology is unknown, it has increasingly been associated with chronic topical steroid use in the male genital area. Treatment is challenging and no standardized treatment is currently available. Because current treatment relies on case reports and small case series, the need for more information about drug efficacy in RSS is warranted. The aim of this study is to describe the therapeutic response to pregabalin in patients from an outpatient dermatologic clinic in a tertiary-care hospital diagnosed with RSS. Five patients with a confirmed diagnosis of RSS were included. Ages ranged from 28 to 63 years. All patients had chronic steroid use in the genital area, mostly in the form of combined formulations of corticosteroids, antifungals, and antibiotics. Four patients were prescribed pregabalin monotherapy, 150 mg once daily at night. One patient was prescribed pregabalin and doxycycline. Two patients had complete remission after one month of therapy, one at two months and two at three months. None experienced recurrence at an average of 9.4 months’ follow-up. One patient experienced morning drowsiness that did not require suspending treatment. Pregabalin is a well-tolerated and effective treatment for RSS. (Ann Dermatol 31(3) 320∼324, 2019)
Ramirez-Gonzalez, Daniel,Cruz-Rivera, Jose de J.,Tiznado, Hugo,Rodriguez, Angel G.,Guillen-Escamilla, Ivan,Zamudio-Ojeda, Adalberto Techno-Press 2020 Advances in nano research Vol.9 No.1
In this work, we report the use of caffeine as an alternative source of nitrogen to successfully dope graphene (quaternary 400.6 eV and pyridinic at 398 eV according XPS), as well as the growth of silver nanowires (in-situ) in the surface of nitrogen doped graphene (NG) sheets. We used the improved graphene oxide method (IGO), chemical reduction of graphene oxide (GOx), and impregnation with caffeine as source of nitrogen for doping and subsequently, silver nanowires (NW) grow in the surface by the reduction of silver salts in the presence of NG, achieving a numerous of growth of NW in the graphene sheets. As supporting experimental evidence, the samples were analyzed using conventional characterization techniques: SEM-EDX, XRD, FT-IR, micro RAMAN, TEM, and XPS.
( Marta Perez De Lis Novo ),( Emma Filgueira Davila ),( Julian Fernandez Martin ),( Jorge Pereira Tamayo ),( Candido Diaz Lagares ),( Alexandre Perez Gonzalez ),( Begona Machado ),( Roberto Perez Alva 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: To analyze the clinical features, epidemiology, diagnosis and treatment of candidemia treated in a tertiary care hospital. Methods: From 2007 to 2013, patients with candidemia were identifi ed at a hospital in Spain.The medical records of all patients with bloodstream infections due to Candida species were retrospectively reviewed. Results: During the six-year period, a total of 104 episodes of candidemia were identifi ed, 70 men (67%) and 46 women (33%), with a mean age of 65 years (range 16- 83). risk factors for candidemia were: neoplasms (41%), diabetes (25%) and renal failure (16%). Candidemia was associated with the presence of invasive devices such as central venous catheter (52%), urinary catheter (48%) and the presence of previous antibiotic treatment (80%) and abdominal surgery (42%). The most frequent form of clinical presentation was sepsis in 67 patients (65.7%) and seven patients were diagnosed with endocarditis. C. albicans (46%) was the most common pathogen, followed by C. parapsilosis (24%) and C. glabrata (17%). (8%). Ninety-three patients (89%) received empirical antifungal therapy and in 72 (78%) was appropriate. Antifungal administered in order of frequency were: fi uconazole 68 patients (65%), caspofungin at 9 (9.5%), amphotericin B, 8 (7%) and voriconazole (2%). Mortality in the fi rst 30 days following the candidemia was 46% (n = 48). Risk factors that were associated with mortality were age> 60 years (p = 0.002), insuffi cient renal (p = 0.03), candidemia unknown focus, or abdominal focus (p = 0.008) and empirical treatment Inappropriate (p = 0.001). Conclusions: The mortality of candidemia in our country is high, and inappropriate treatment is the only factor improved prognosis. A high index of suspicion is essential for diagnosis. The existence of protocols and practice guidelines are necessary to improve the management of infection and prognosis.
( Marta Perez De Lis Novo ),( Alexandre Perez Gonzalez ),( Melania Estevez Gil ),( Emma Filgueira Davila ),( Julian Fernandez Martin ),( Roberto Perez Alvarez ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: To analyse the epidemiological, clinical, diagnostic and therapeutic features related to the development of spondylodiscitis in a cohort of Spanish patients. Methods: A retrospective analysis of 75 cases of infectious spondylodiscitis diagnosed in university hospital between 2000 and 2013. Results: We studied 75 patients with a mean age of 63 + / - 20 years, of which 67% were male. Time average evolution of disease prior to consultation was 4.2 months. The main symptom was back pain or back pain (90%) The most frequent location was the lumbar spondylodiscitis (74%), 60% of patients had one or more associated diseases (Diabetes:20%; COPD: 18%; tumors: 17%). Furthermore, 50% of them suffered from heart disease, being the most frequently hypertensive. 23% of patients carried immunosuppressive therapy, mainly corticosteroids (90%). In 53 patients (70%) could be performed a certain diagnosis, with Staphylococcus aureus the most frequent (41%) followed by S. epidermidis (17%), and Streptococcus (15%). Blood cultures were positive in 60% of cases and surgical biopsy was performed in 37% of the patients. 8 cases had endocarditis criteria, 6 of which were fulfi lled by S. aureus. MRI was performed in 75% cases, being in all cases, pathological. The average length of treatment was 12 weeks, with the most commonly used antibiotics cloxacillin, vancomycin and ceftriaxone. 18% of patients underwent surgery, performed laminectomy and drainage of abscesses. During evolution 6 patients died. 10 patients (8%) had sequelae neurological. Conclusions: Spondylodiscitis is a rare disease in adults, but with high morbidity and mortality due to the diffi culty of diagnosis. Insidious development and the lack of specifi city of the symptoms it interferes with the diagnosis and treatment early, so a high index of suspicion is essential.