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https://www.readbyqxmd.com/read/29425778/preface
#1
EDITORIAL
Eugenia J Olguín, Joan García, Jaume Puigagut
No abstract text is available yet for this article.
February 6, 2018: New Biotechnology
https://www.readbyqxmd.com/read/29390337/linezolid-associated-optic-neuropathy-in-a-pediatric-patient-with-mycobacterium-nonchromogenicum-a-case-report
#2
Napoleón González Saldaña, Diego Mauricio Galvis Trujillo, Ana Maria Borbolla Pertierra, Ana Ivette Mondragón Pineda, Hugo Juárez Olguín
BACKGROUND: Toxic optic neuropathies are alterations of the optic nerve and can be caused by environmental, pharmacological, or nutritional agents. CASE: It is about a 7-year-old male patient, a native of the State of Mexico, Mexico who was diagnosed with cervical mycobacterial lymphadenitis that required management with linezolid. OBSERVATIONS: After 7 months of treatment, visual acuity of the left eye decreased and was accompanied by headache...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29344269/early-and-partial-reduction-in-cd4-foxp3-regulatory-t-cells-during-colitis-associated-colon-cancer-induces-cd4-and-cd8-t-cell-activation-inhibiting-tumorigenesis
#3
Jonadab E Olguín, Itzel Medina-Andrade, Emmanuel Molina, Armando Vázquez, Thalia Pacheco-Fernández, Rafael Saavedra, Carlos Pérez-Plasencia, Yolanda I Chirino, Felipe Vaca-Paniagua, Luis E Arias-Romero, Emma B Gutierrez-Cirlos, Sonia A León-Cabrera, Miriam Rodriguez-Sosa, Luis I Terrazas
Colorectal cancer (CRC) is the second most commonly diagnosed cancer in women and the third in men in North America and Europe. CRC is associated with inflammatory responses in which intestinal pathology is caused by different cell populations including a T cell dysregulation that concludes in an imbalance between activated T (Tact) and regulatory T (Treg) cells. Treg cells are CD4+Foxp3+ cells that actively suppress pathological and physiological immune responses, contributing to the maintenance of immune homeostasis...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29281144/size-growth-and-density-data-for-shallow-water-sea-urchins-from-mexico-to-the-aleutian-islands-alaska-1956-2016
#4
Thomas A Ebert, Louis M Barr, James L Bodkin, Dirk Burcham, Dominique Bureau, Henry S Carson, Nancy L Caruso, Jennifer E Caselle, Jeremy T Claisse, Sabrina Clemente, Kathryn Davis, Paul M Detwiler, John D Dixon, David O Duggins, John M Engle, James A Estes, Scott D Groth, Benjamin M Grupe, Peter Halmay, Kyle P Hebert, José C Hernández, Laura J Jurgens, Peter E Kalvass, Michael C Kenner, Brenda Kenner, David J Kushner, Lynn C Lee, David L Leighton, Gabriela Montaño-Moctezuma, J Eric Munk, Irma Olguin, Julio S Palleiro, David O Parker, John S Pearse, Daniel J Pondella, Laura Rogers-Bennett, Stephen C Schroeter, A Ole Shelton, Jorge Sonnenholzner, Ian K Taniguchi, Glenn R VanBlaricom, Jane C Watson, Benjamin P Weitzman, Jonathan P Williams, Jennifer Yakimishyn, Zane Zhang
Size, growth, and density have been studied for North American Pacific coast sea urchins Strongylocentrotus purpuratus, S. droebachiensis, S. polyacanthus, Mesocentrotus (Strongylocentrotus) franciscanus, Lytechinus pictus, Centrostephanus coronatus, and Arbacia stellata by various workers at diverse sites and for varying lengths of time from 1956 to present. Numerous peer-reviewed publications have used some of these data but some data have appeared only in graduate theses or the gray literature. There also are data that have never appeared outside original data sheets...
December 27, 2017: Ecology
https://www.readbyqxmd.com/read/29226152/the-phytoestrogen-genistein-produces-similar-effects-as-17%C3%AE-estradiol-on-anxiety-like-behavior-in-rats-at-12-weeks-after-ovariectomy
#5
Juan Francisco Rodríguez-Landa, Jonathan Cueto-Escobedo, Abraham Puga-Olguín, Eduardo Rivadeneyra-Domínguez, Blandina Bernal-Morales, Emma Virginia Herrera-Huerta, Andrea Santos-Torres
The phytoestrogen genistein produces anxiolytic-like effects in ovariectomized rats, which highlights its potential therapeutic effect in ameliorating anxiety in surgical menopausal women. However, no studies have directly compared the effects of identical doses of genistein and 17β-estradiol, the main estrogen used in hormone replacement therapy in menopausal women. The present study evaluated the anxiolytic-like effects of identical doses of genistein and 17β-estradiol (0.045, 0.09, and 0.18 mg/kg/7 days, s...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29171626/-exercise-as-a-tool-to-reduce-body-weight
#6
Carlos Burgos, Carlos Henríquez-Olguín, Rodrigo Ramírez-Campillo, Sandra Mahecha Matsudo, Hugo Cerda-Kohler
No abstract text is available yet for this article.
June 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29158115/trace-elements-cause-oxidative-damage-in-the-brain-of-rats-with-induced-hypotension
#7
David Calderón Guzmán, Maribel Ortiz Herrera, Norma Osnaya Brizuela, Gerardo Barragán Mejía, Hugo Juárez Olguín, Armando Valenzuela Peraza
Hypertension causes neuronal damage and apoptosis in the brain. Diazoxide is a drug used in the treatment of hypertension however, its effect on 5-hydroxyindole acetic acid (5-HIAA) and dopamine amines in adult animal models remains unclear. The purpose of this study was to determine the effect of oligoelements on 5-HIAA and dopamine in the brain of adult rats treated with diazoxide METHODS: Male Fisher rats (weight 250g) were treated as follows: Group I, NaCl 0.9% (control); group II, tracefusin® (1.5mL/rat); group III, diazoxide (20mg/rat) and group IV, tracefusin® (1...
November 3, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29150104/high-frequency-of-primary-refractory-disease-and-low-progression-free-survival-rate-of-hodgkin-s-lymphoma-a-decade-of-experience-in-a-latin-american-center
#8
José Carlos Jaime-Pérez, Carmen Magdalena Gamboa-Alonso, José Ramón Padilla-Medina, Raúl Alberto Jiménez-Castillo, Leticia Alejandra Olguín-Ramírez, César Homero Gutiérrez-Aguirre, Olga Graciela Cantú-Rodríguez, David Gómez-Almaguer
BACKGROUND: Reports dealing with clinical outcomes of classical Hodgkin's lymphoma in low- to middle-income countries are scarce and response to therapy is poorly documented. This report describes the characteristics and clinical outcomes of patients with classical Hodgkin's lymphoma from a single institution in Latin America. METHOD: A retrospective study was conducted over ten years of patients with classical Hodgkin's lymphoma treated at a referral center. Progression-free and overall survival rates were estimated by Kaplan-Meier analysis...
October 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/29109401/smad3-initiates-oxidative-stress-and-proteolysis-that-underlies-diaphragm-dysfunction-during-mechanical-ventilation
#9
Huibin Tang, Catherine L Kennedy, Myung Lee, Yang Gao, Hui Xia, Francesca Olguin, Danielle A Fraga, Kelsey Ayers, Sehoon Choi, Michael Kim, Amir Tehrani, Yasser A Sowb, Thomas A Rando, Joseph B Shrager
Prolonged use of mechanical ventilation (MV) leads to atrophy and dysfunction of the major inspiratory muscle, the diaphragm, contributing to ventilator dependence. Numerous studies have shown that proteolysis and oxidative stress are among the major effectors of ventilator-induced diaphragm muscle dysfunction (VIDD), but the upstream initiator(s) of this process remain to be elucidated. We report here that periodic diaphragm contraction via phrenic nerve stimulation (PNS) substantially reduces MV-induced proteolytic activity and oxidative stress in the diaphragm...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29107184/anxiety-like-behavior-as-an-early-endophenotype-in-the-tgf344-ad-rat-model-of-alzheimer-s-disease
#10
Nathan S Pentkowski, Laura E Berkowitz, Shannon M Thompson, Emma N Drake, Carlos R Olguin, Benjamin J Clark
Alzheimer's disease (AD) is characterized by progressive cognitive decline and the presence of aggregates of amyloid beta (plaques) and hyperphosphorylated tau (tangles). Early diagnosis through neuropsychological testing is difficult due to comorbidity of symptoms between AD and other types of dementia. As a result, there is a need to identify the range of behavioral phenotypes expressed in AD. In the present study, we utilized a transgenic rat (TgF344-AD) model that bears the mutated amyloid precursor protein as well as presenilin-1 genes, resulting in progressive plaque and tangle pathogenesis throughout the cortex...
October 5, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29050936/t%C3%AE-riii-is-induced-by-tcr-signaling-and-downregulated-in-foxp3-regulatory-t-cells
#11
Sandra Ortega-Francisco, Marisol de la Fuente-Granada, Evelyn K Alvarez Salazar, Lizbeth Airais Bolaños-Castro, Gabriela Fonseca-Camarillo, Roxana Olguin-Alor, Germán R Alemán-Muench, Fernando López-Casillas, Chander Raman, Eduardo A García-Zepeda, Gloria Soldevila
TGF-β type III receptor (TβRIII) is a co-receptor for TGFβ family members required for high-affinity binding of these ligands to their receptors, potentiating their cellular functions. TGF-βs, Bone Morphogenetic Proteins (BMP2/4) and Inhibins/Activins regulate different checkpoints during T cell differentiation. We have previously reported that TβRIII modulates T cell development by protecting developing thymocytes from apoptosis, however the role of this co-receptor in peripheral lymphocytes still remains elusive...
December 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29016112/liquid-structure-with-nano-heterogeneity-promotes-cationic-transport-in-concentrated-electrolytes
#12
Oleg Borodin, Liumin Suo, Mallory Gobet, Xiaoming Ren, Fei Wang, Antonio Faraone, Jing Peng, Marco Olguin, Marshall Schroeder, Michael S Ding, Eric Gobrogge, Arthur von Wald Cresce, Stephen Munoz, Joseph A Dura, Steve Greenbaum, Chunsheng Wang, Kang Xu
Using molecular dynamics simulations, small-angle neutron scattering, and a variety of spectroscopic techniques, we evaluated the ion solvation and transport behaviors in aqueous electrolytes containing bis(trifluoromethanesulfonyl)imide. We discovered that, at high salt concentrations (from 10 to 21 mol/kg), a disproportion of cation solvation occurs, leading to a liquid structure of heterogeneous domains with a characteristic length scale of 1 to 2 nm. This unusual nano-heterogeneity effectively decouples cations from the Coulombic traps of anions and provides a 3D percolating lithium-water network, via which 40% of the lithium cations are liberated for fast ion transport even in concentration ranges traditionally considered too viscous...
October 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28972701/biotransformation-of-water-lettuce-pistia-stratiotes-to-biohydrogen-by-rhodopseudomonas-palustris
#13
E Corneli, A Adessi, E J Olguín, G Ragaglini, D A García-López, R De Philippis
AIMS: Aim of the paper was to assess the feasibility of producing hydrogen as a biofuel by photofermentation of fermented water lettuce (Pistia stratiotes L.) waste biomass, after a nitrogen-stripping treatment. METHODS AND RESULTS: A natural (42OL) and an engineered strain (CGA676, with low-ammonium sensitivity) of Rhodopseudomonas palustris were used for producing hydrogen. The stripping procedure was highly effective for ammonium removal, with an acceptable selectivity (91% of ammonium was removed; only 14% of total organic acids were lost)...
October 3, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28972367/carbohydrate-functionalized-1-2-3-triazolylidene-complexes-for-application-in-base-free-alcohol-and-amine-oxidation
#14
René Pretorius, Juan Olguín, Martin Albrecht
Acetylglucose- and acetylgalactose-functionalized triazolylideneruthenium(II) and -iridium(III) complexes were synthesized and fully characterized. Subsequent carbohydrate deprotection yielded the first examples of glucose- and galactose-functionalized 1,2,3-triazolylideneiridium complexes. Base-free oxidation of alcohols and amines was used to probe the catalytic potential of the metal complexes and the influence of the carbohydrate wingtip group. Generally, the performance of these complexes is higher in amine oxidation than in alcohol oxidation...
October 3, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28937646/effects-of-liposomes-contained-in-thermosensitive-hydrogels-as-biomaterials-useful-in-neural-tissue-engineering
#15
Yusser Olguín, Cristian Campos, Javiera Catalán, Luís Velásquez, Fernando Osorio, Iván Montenegro, Alejandro Madrid, Cristian Acevedo
Advances in the generation of suitable thermosensitive hydrogels for the delivery of cells in neural tissue engineering demonstrate a delicate relationship between physical properties and capabilities to promote cell proliferation and differentiation. To improve the properties of these materials, it is possible to add liposomes for the controlled release of bioactive elements, which in turn can affect the physical and biological properties of the hydrogels. In the present investigation, different hydrogels based on Pluronic F127 have been formulated with the incorporation of chitosan and two types of liposomes of two different sizes...
September 22, 2017: Materials
https://www.readbyqxmd.com/read/28854194/the-earliest-settlers-of-mesoamerica-date-back-to-the-late-pleistocene
#16
Wolfgang Stinnesbeck, Julia Becker, Fabio Hering, Eberhard Frey, Arturo González González, Jens Fohlmeister, Sarah Stinnesbeck, Norbert Frank, Alejandro Terrazas Mata, Martha Elena Benavente, Jerónimo Avilés Olguín, Eugenio Aceves Núñez, Patrick Zell, Michael Deininger
Preceramic human skeletal remains preserved in submerged caves near Tulum in the Mexican state of Quintana Roo, Mexico, reveal conflicting results regarding 14C dating. Here we use U-series techniques for dating a stalagmite overgrowing the pelvis of a human skeleton discovered in the submerged Chan Hol cave. The oldest closed system U/Th age comes from around 21 mm above the pelvis defining the terminus ante quem for the pelvis to 11311±370 y BP. However, the skeleton might be considerable older, probably as old as 13 ky BP as indicated by the speleothem stable isotope data...
2017: PloS One
https://www.readbyqxmd.com/read/28846746/ctcf-counter-regulates-cardiomyocyte-development-and-maturation-programs-in-the-embryonic-heart
#17
Melisa Gomez-Velazquez, Claudio Badia-Careaga, Ana Victoria Lechuga-Vieco, Rocio Nieto-Arellano, Juan J Tena, Isabel Rollan, Alba Alvarez, Carlos Torroja, Eva F Caceres, Anna R Roy, Niels Galjart, Paul Delgado-Olguin, Fatima Sanchez-Cabo, Jose Antonio Enriquez, Jose Luis Gomez-Skarmeta, Miguel Manzanares
Cardiac progenitors are specified early in development and progressively differentiate and mature into fully functional cardiomyocytes. This process is controlled by an extensively studied transcriptional program. However, the regulatory events coordinating the progression of such program from development to maturation are largely unknown. Here, we show that the genome organizer CTCF is essential for cardiogenesis and that it mediates genomic interactions to coordinate cardiomyocyte differentiation and maturation in the developing heart...
August 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28817955/redox-signaling-mechanisms-in-nervous-system-development
#18
Mauricio Olguín-Albuerne, Julio Morán
SIGNIFICANCE: Numerous studies have demonstrated the actions of reactive oxygen species (ROS) as regulators of several physiological processes. In this study, we discuss how redox signaling mechanisms operate to control different processes such as neuronal differentiation, oligodendrocyte differentiation, dendritic growth, and axonal growth. Recent Advances: Redox homeostasis regulates the physiology of neural stem cells (NSCs). Notably, the neuronal differentiation process of NSCs is determined by a change toward oxidative metabolism, increased levels of mitochondrial ROS, increased activity of NADPH oxidase (NOX) enzymes, decreased levels of Nrf2, and differential regulation of different redoxins...
September 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28791664/pharmacokinetics-of-sildenafil-in-children-with-pulmonary-arterial-hypertension
#19
Hugo Juárez Olguín, Hector Osnaya Martínez, Carmen Flores Pérez, Blanca Ramírez Mendiola, Liliana Rivera Espinosa, Juan Luis Chávez Pacheco, Janett Flores Pérez, Ignacio Mora Magaña
BACKGROUND: Recently, sildenafil was introduced to treat pulmonary arterial hypertension (PAH); however, there are currently few studies on the pharmacokinetics of sildenalfil in children. Therefore, we aimed to carry out a pharmacokinetic study of sildenafil in children with PAH using a single dose. METHODS: Twelve children diagnosed with PAH, consisting of with ten males and two females, were recruited for the study after obtaining written consent from their parents or guardians...
December 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28744067/helminth-products-potently-modulate-experimental-autoimmune-encephalomyelitis-by-downregulating-neuroinflammation-and-promoting-a-suppressive-microenvironment
#20
Alberto N Peón, Yadira Ledesma-Soto, Jonadab E Olguín, Marcel Bautista-Donis, Edda Sciutto, Luis I Terrazas
A negative correlation between the geographical distribution of autoimmune diseases and helminth infections has been largely associated in the last few years with a possible role for such type of parasites in the regulation of inflammatory diseases, suggesting new pathways for drug development. However, few helminth-derived immunomodulators have been tested in experimental autoimmune encephalomyelitis (EAE), an animal model of the human disease multiple sclerosis (MS). The immunomodulatory activities of Taenia crassiceps excreted/secreted products (TcES) that may suppress EAE development were sought for...
2017: Mediators of Inflammation
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