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https://www.readbyqxmd.com/read/28647264/mgo-based-adsorbents-for-co2-adsorption-influence-of-structural-and-textural-properties-on-the-co2-adsorption-performance
#1
Gutiérrez-Bonilla Elvira, Granados-Correa Francisco, Sánchez-Mendieta Víctor, Morales-Luckie Raúl Alberto
A series of MgO-based adsorbents were prepared through solution-combustion synthesis and ball-milling process. The prepared MgO-based powders were characterized using X-ray diffraction, scanning electron microscopy, N2 physisorption measurements, and employed as potential adsorbents for CO2 adsorption. The influence of structural and textural properties of these adsorbents over the CO2 adsorption behaviour was also investigated. The results showed that MgO-based products prepared by solution-combustion and ball-milling processes, were highly porous, fluffy, nanocrystalline structures in nature, which are unique physico-chemical properties that significantly contribute to enhance their CO2 adsorption...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28607419/two-step-atp-driven-opening-of-cohesin-head
#2
Íñigo Marcos-Alcalde, Jesús I Mendieta-Moreno, Beatriz Puisac, María Concepción Gil-Rodríguez, María Hernández-Marcos, Diego Soler-Polo, Feliciano J Ramos, José Ortega, Juan Pié, Jesús Mendieta, Paulino Gómez-Puertas
The cohesin ring is a protein complex composed of four core subunits: Smc1A, Smc3, Rad21 and Stag1/2. It is involved in chromosome segregation, DNA repair, chromatin organization and transcription regulation. Opening of the ring occurs at the "head" structure, formed of the ATPase domains of Smc1A and Smc3 and Rad21. We investigate the mechanisms of the cohesin ring opening using techniques of free molecular dynamics (MD), steered MD and quantum mechanics/molecular mechanics MD (QM/MM MD). The study allows the thorough analysis of the opening events at the atomic scale: i) ATP hydrolysis at the Smc1A site, evaluating the role of the carboxy-terminal domain of Rad21 in the process; ii) the activation of the Smc3 site potentially mediated by the movement of specific amino acids; and iii) opening of the head domains after the two ATP hydrolysis events...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28576037/drug-release-profiles-of-modified-mcm-41-with-superparamagnetic-behavior-correlated-with-the-employed-synthesis-method
#3
Natalia I Cuello, Verónica R Elías, Silvia N Mendieta, Marcela Longhi, Mónica E Crivello, Marcos I Oliva, Griselda A Eimer
Mesoporous materials with superparamagnetic properties were successfully synthesized by two different methods: direct incorporation (DI) and wet impregnation (WI). The synthetized solids were evaluated as host of drugs for delivery systems and their physicochemical properties were characterized by XRD, ICP, N2 adsorption-desorption, spectroscopies of UV-Vis DR, FT-IR and their magnetic properties were measured. Indomethacin (IND) was incorporated into the materials and the kinetic of the release profiles was studied by applying the Pepas and Sahlin model...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28547780/advances-in-molecular-engineering-of-carbohydrate-binding-modules
#4
REVIEW
Silvia Armenta, Silvia Moreno-Mendieta, Zaira Sánchez-Cuapio, Sergio Sánchez, Romina Rodríguez-Sanoja
Carbohydrate-binding modules (CBMs) are non-catalytic domains that are generally appended to carbohydrate-active enzymes. CBMs have a broadly conserved structure that allows recognition of a notable variety of carbohydrates, in both their soluble and insoluble forms, as well as in their alpha and beta conformations and with different types of bonds or substitutions. This versatility suggests a high functional plasticity that is not yet clearly understood, in spite of the important number of studies relating protein structure and function...
May 25, 2017: Proteins
https://www.readbyqxmd.com/read/28542310/geographic-distribution-of-angiostrongylus-cantonensis-in-wild-rats-rattus-rattus-and-terrestrial-snails-in-florida-usa
#5
Heather D Stockdale Walden, John D Slapcinsky, Shannon Roff, Jorge Mendieta Calle, Zakia Diaz Goodwin, Jere Stern, Rachel Corlett, Julia Conway, Antoinette McIntosh
The parasitic nematode Angiostrongylus cantonensis is a major cause of eosinophilic meningitis in humans, and has been documented in other incidental hosts such as birds, horses, dogs and non-human primates. It is endemic in Hawaii, and there have been sporadic reports in the southern continental United States. This parasite uses rats as definitive hosts and snails as intermediate hosts. In this study, we collected potential definitive and intermediate hosts throughout Florida to ascertain the geographic distribution in the state: Rats, environmental rat fecal samples, and snails were collected from 18 counties throughout the state...
2017: PloS One
https://www.readbyqxmd.com/read/28541715/biodegradation-and-kinetics-of-organic-compounds-and-heavy-metals-in-an-artificial-wetland-system-aws-by-using-water-hyacinths-as-a-biological-filter
#6
P F Rodríguez-Espinosa, J A Mendoza-Pérez, J Tabla-Hernandez, E Martínez-Tavera, M M Monroy-Mendieta
The objective of the present study was to investigate the ability of water hyacinth (Eichhornia crassipes) to absorb organic compounds (potassium hydrogen phthalate, sodium tartrate, malathion, 2,4-D and piroxicam). For the aforementioned purpose, an artificial wetland system (AWS) was constructed and filled with water hyacinth collected from Valsequillo Reservoir, Puebla, Mexico. Potassium hydrogen phthalate and sodium tartrate were measured in terms of Chemical Oxygen Demand (COD) and the Biological Oxygen Demand (BOD)...
May 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28507635/salivary-immunoglobulin-gene-expression-in-patients-with-caries
#7
Gema Regina Guadarrama Santín, Angel Visoso Salgado, Norma Margarita Montiel Bastida, Isaías de la Rosa Gómez, Jonnathan Guadalupe Santillán Benítez, Hugo Mendieta Zerón
BACKGROUND: Immunoglobulins mediate the host's humoral immune response are expressed in saliva. AIM: To quantify the FcαR, FcγRIIB, and FcαμR gene expression in the saliva of Mexican patients with caries in mixed and permanent dentition. SUBJECTS AND METHODS: This was a comparative cross-sectional study. mRNA was isolated from 200 μL of saliva following the RNA III Tissue Fresh-frozen protocol of the MagNA Pure LC Instrument 2.0 (Roche Diagnostics GmbH, Nederland BV) and the FcαR, FcαμR and FcγRIIB were quantified through TaqMan Assays...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28475152/prevalence-of-rotavirus-genogroup-a-and-norovirus-genogroup-ii-in-bassaseachic-falls-national-park-surface-waters-in-chihuahua-mexico
#8
Ma Carmen E Delgado-Gardea, Patricia Tamez-Guerra, Ricardo Gomez-Flores, Aurora Mendieta-Mendoza, Francisco Javier Zavala-Díaz de la Serna, Juan Francisco Contreras-Cordero, Gilberto Erosa-de la Vega, María Concepción Pérez-Recoder, Blanca Sánchez-Ramírez, Carmen González-Horta, Rocío Infante-Ramírez
In areas lacking potable water treatment, drinking contaminated water may represent a public health threat. In addition to enteropathogenic bacteria and parasites, fecal contamination in water environments is associated with the transmission of enteric viruses and other causal agents of infectious disease. Rotavirus and norovirus are the main enteric viral agents responsible for diarrheic outbreaks. The aim of the present study was to detect seasonal variation of rotavirus and norovirus in the surface water at Bassaseachic Falls National Park during 2013...
May 5, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28449403/effects-of-malnutrition-on-treatment-related-morbidity-and-survival-of-children-with-cancer-in-nicaragua
#9
Allison K Pribnow, Roberta Ortiz, Luis Fulgencio Báez, Luvy Mendieta, Sandra Luna-Fineman
BACKGROUND: Most children with cancer live in resource-limited countries where malnutrition is often prevalent. We identified the relationship between malnutrition and treatment-related morbidity (TRM), abandonment of therapy, and survival of children with cancer in Nicaragua to better inform targeted nutritional interventions. PROCEDURE: We conducted a retrospective review of patients aged 6 months to 18 years with newly diagnosed acute lymphoblastic leukemia, acute myeloid leukemia (AML), Wilms tumor, Hodgkin lymphoma, or Burkitt lymphoma (BL) who were treated between January 1, 2004, and December 31, 2007 at Children's Hospital Manuel de Jesus Rivera in Managua, Nicaragua...
April 27, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28373707/effect-of-water-dna-interactions-on-elastic-properties-of-dna-self-assembled-monolayers
#10
Carmen M Domínguez, Daniel Ramos, Jesús I Mendieta-Moreno, José L G Fierro, Jesús Mendieta, Javier Tamayo, Montserrat Calleja
DNA-water interactions have revealed as very important actor in DNA mechanics, from the molecular to the macroscopic scale. Given the particularly useful properties of DNA molecules to engineer novel materials through self-assembly and by bridging organic and inorganic materials, the interest in understanding DNA elasticity has crossed the boundaries of life science to reach also materials science and engineering. Here we show that thin films of DNA constructed through the self-assembly of sulfur tethered ssDNA strands demonstrate a Young's modulus tuning range of about 10 GPa by simply varying the environment relative humidity from 0% up to 70%...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28369293/report-on-mortality-from-gluteal-fat-grafting-recommendations-from-the-aserf-task-force
#11
M Mark Mofid, Steven Teitelbaum, Daniel Suissa, Arturo Ramirez-Montañana, Denis C Astarita, Constantino Mendieta, Robert Singer
Background: Gluteal fat grafting is among the fastest growing aesthetic procedures in the United States and around the world. Given numerous anecdotal and published reports of fatal and nonfatal pulmonary fat embolism resulting from this procedure, the Aesthetic Surgery Education and Research Foundation (ASERF) formed a Task Force to study this complication. Objectives: To determine the incidence of fatal and nonfatal pulmonary fat embolism associated with gluteal fat grafting and provide recommendations to decrease the risks of the procedure...
March 21, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28363529/potential-of-glucans-as-vaccine-adjuvants-a-review-of-the-%C3%AE-glucans-case
#12
REVIEW
Silvia Moreno-Mendieta, Daniel Guillén, Rogelio Hernández-Pando, Sergio Sánchez, Romina Rodríguez-Sanoja
α-Glucans are present in virtually all domains of life, and these glucose chains linked by α-1,4- and α-1,6-linked branches form the most important storage carbohydrates in cells. It is likely for this reason that α-glucans are not generally considered as bioactive molecules as β-glucans are. Nevertheless, it is known that depending on their source, many α-glucans play important roles as modulators of immune response. Recent efforts have attempted to elucidate the mechanisms through which α-glucans exert their immunostimulant effects; however, the main challenge is the accurate identification of the receptors of immune cells involved in their recognition...
June 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28342202/treatment-of-chronic-venous-ulcers-experience-in-six-patients-treated-with-terminal-interruption-of-the-reflux-source-tirs-tirs-effective-option-for-the-treatment-of-venous-ulcers
#13
LETTER
M Mendieta-Eckert, J L Azpiazu-Macho, R Lambea-Crespo
No abstract text is available yet for this article.
March 25, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28296791/response-of-an-acquired-elastotic-hemangioma-to-vascular-laser
#14
Marta Mendieta-Eckert, José L Díaz-Ramón, Jesús Gardeazabal-García
No abstract text is available yet for this article.
March 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28278360/assessment-of-arterial-stiffness-in-periodontitis-using-a-novel-pulse-wave-imaging-methodology
#15
Elena C Sanz-Miralles, Ronny Li, Fatemeh Momen-Heravi, Carlos Mendieta, Elisa E Konofagou, Panos N Papapanou
AIM: We investigated the cross-sectional relationship between periodontal status and arterial stiffness, assessed through a novel Pulse Wave Imaging methodology. METHODS: Eighty volunteers were enrolled (39% male, age range 24-78 years) and 33 pairs were formed of periodontitis patients/periodontally healthy controls, matched by age and gender. A full-mouth periodontal examination was performed and the degree of stiffness of the right and left carotid arteries was assessed by measuring pulse wave velocity (PWV) and the uniformity in pulse wave propagation (R(2) )...
March 9, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28244857/diagnostic-validity-of-doppler-ultrasound-in-giant-cell-arteritis
#16
I Concepción Aranda-Valera, Sara García Carazo, Irene Monjo Henry, Eugenio De Miguel Mendieta
OBJECTIVES: To assess the validity of Doppler ultrasound in the diagnosis of giant cell arteritis (GCA), using the American College of Rheumatology (ACR) criteria and biopsy and using as gold standard the patient's definitive clinical diagnosis. METHODS: An observational, descriptive and analytical study of 451 consecutive patients with suspected GCA was conducted, and the clinical history and ultrasound findings of the patients were reviewed. The validity of ACR criteria, temporal arteritis biopsy (TAB) and Doppler ultrasound in the diagnosis of GCA was calculated using the final diagnosis of the doctor in charge as the gold standard...
March 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28222838/prevalence-of-food-impaction-induced-periodontitis-in-conventionally-housed-marsh-rice-rats-oryzomys-palustris
#17
Jonathan G Messer, Jessica M Jiron, Hung-Yuan Chen, Evelyn J Castillo, Jorge L Mendieta Calle, Mary K Reinhard, Donald B Kimmel, J Ignacio Aguirre
Marsh rice rats (Oryzomys palustris) fed a pelleted diet high in sucrose and casein have been used as a model for moderate to severe periodontitis. Here we characterize the prevalence, location, and histopathologic features of food-impaction lesions (FIL), a unique type of oral event, in rice rats fed standard pelleted rodent chow from weaning until 34 wk of age. Healthy female rats (n = 90; age, 4 wk) were weaned into groups (n = 10 to 24) and were euthanized at 4, 16, 22, 28, or 34 wk of age. At necropsy, high-resolution photographs of the 4 jaw quadrants were examined by 3 independent observers to determine the presence, number, and location of FIL...
February 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28202347/in-silico-design-chemical-synthesis-and-toxicological-evaluation-of-1-3-thiazolidine-2-4-dione-derivatives-as-ppar%C3%AE-agonists
#18
Diana Alemán-González-Duhart, Feliciano Tamay-Cach, José Correa-Basurto, Itzia Irene Padilla-Martínez, Samuel Álvarez-Almazán, Jessica Elena Mendieta-Wejebe
Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors involved in the metabolism of lipids and carbohydrates. The exogenous ligands of these receptors are thiazolidinediones (TZDs), which are used to treat type 2 diabetes mellitus (DM2). However, drugs from this group produce adverse effects such as hepatic steatosis. Hence, the aim of this work was to design a set of small molecules that can activate the γ isoform of PPARs while minimizing the adverse effects. The derivatives were designed containing the polar head of TZD and an aromatic body, serving simultaneously as the body and tail...
February 12, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28187641/cryptic-within-cryptic-genetics-morphometrics-and-bioacoustics-delimitate%C3%A2-a-new-species-of-i-eleutherodactylus-i-anura-eleutherodactylidae-from-eastern-cuba
#19
Ariel Rodríguez, Álvaro Dugo-Cota, Santiago Montero-Mendieta, Alejandro Gonzalez-Voyer, Roberto Alonso Bosch, Miguel Vences, Carles Vilà
We studied the variation in genetics, bioacustics, and morphology in Eleutherodactylus glamyrus, a regionally endemic frog species restricted to high elevations in the Sierra Maestra Massif, Western Cuba that was originally described as a cryptic species hidden under the name E. auriculatus. Genetic analysis of mtDNA sequences of the 16S and cob genes identify two allopatric and strongly supported mitochondrial clades (phylogroups) which also showed no haplotype sharing in the nuclear Rag-1 gene. Bioacustic, and morphological comparisons concordantly identify these two phylogroups as independent evolutionary lineages...
January 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28028966/glycogen-synthase-kinase-3%C3%AE-gsk-3%C3%AE-and-nuclear-factor-kappa-b-nfkb-in-childhood-acute-lymphoblastic-leukemia
#20
Cristian Fabian Layton Tovar, Hugo Mendieta Zerón, Maria Del Socorro Camarillo Romero, Yanko V Fabila Sánchez, Isidoro Tejocote Romero
BACKGROUND: Acute lymphocytic leukemia (ALL) is the most common hematologic malignancy in early childhood. In children with acute lymphoblastic leukemia (ALL), the activity of glycogen synthase kinase (GSK-3β) has been associated with changes in the transcriptional activity and expression of nuclear factor kappa beta (NFKB) in the mononuclear cells of bone marrow. OBJECTIVES: The aim of the study was to determine the possible role of glycogen synthase kinase 3beta (GSK-3β) and nuclear factor kappa beta (NFKB) as prognostic variables in pediatric patients with ALL...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
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