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https://www.readbyqxmd.com/read/28822345/assessment-of-oxidative-stress-and-bioaccumulation-of-the-metals-cu-fe-zn-pb-cd-in-the-polychaete-perinereis-gualpensis-from-estuaries-of-central-chile
#1
Hernán Gaete, Manuel Álvarez, Gabriela Lobos, Eulogio Soto, Carlos Jara-Gutiérrez
The estuaries of the Aconcagua and Maipo Rivers of central Chile are receptors of residues that contain metals from anthropic activities including agriculture, mining and smelters, which have different levels in the two basins. This study postulates that the exposition to metals is different in the two estuaries and that their sediments contain bioavailable chemical agents that produce oxidative stress. The aim of the study was to evaluate the effect of estuarine sediments on the polychaete Perinereis gualpensis using oxidative stress biomarkers and to determine the metal concentrations in sediments and their accumulation in P...
August 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28820906/exposure-to-fine-particulate-matter-in-the-air-alters-placental-structure-and-the-renin-angiotensin-system
#2
Sônia de Fátima Soto, Juliana Oliveira de Melo, Guilherme D'Aprile Marchesi, Karen Lucasechi Lopes, Mariana Matera Veras, Ivone Braga de Oliveira, Regiane Machado de Souza, Isac de Castro, Luzia Naôko Shinohara Furukawa, Paulo Hilário Nascimento Saldiva, Joel C Heimann
METHODS: Female Wistar rats were exposed to filtered air (F) or to concentrated fine particulate matter (P) for 15 days. After mating, the rats were divided into four groups and again exposed to F or P (FF, FP, PF, PP) beginning on day 6 of pregnancy. At embryonic day 19, the placenta was collected. The placental structure, the protein and gene expression of TGFβ1, VEGF-A, and its receptor Flk-1 and RAS were evaluated by indirect ELISA and quantitative real-time PCR. RESULTS: Exposure to P decreased the placental mass, size, and surface area as well as the TGFβ1, VEGF-A and Flk-1 content...
2017: PloS One
https://www.readbyqxmd.com/read/28818364/involvement-of-schrabgdi1-from-solanum-chilense-in-endocytic-trafficking-and-tolerance-to-salt-stress
#3
Alex San Martín-Davison, Ricardo Pérez-Díaz, Flavia Soto, José Madrid-Espinoza, Enrique González-Villanueva, Lorena Pizarro, Lorena Norambuena, Jaime Tapia, Hiromi Tajima, Eduardo Blumwald, Simón Ruiz-Lara
Physiological responses of plants to salinity stress requires the coordinated activation of many genes. A salt-induced gene was isolated from roots of the wild tomato species Solanum chilense and named SchRabGDI1 because it encodes a protein with high identity to GDP dissociation inhibitors of plants. These proteins are regulators of the RabGTPase cycle that play key roles in intracellular vesicular trafficking. The expression pattern of SchRabGDI1 showed an early up-regulation in roots and leaves under salt stress...
October 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28816989/disease-duration-of-rheumatoid-arthritis-is-a-predictor-of-vascular-stiffness-a-cross-sectional-study-in-patients-without-known-cardiovascular-comorbidities-a-strobe-compliant-article
#4
Mónica Vázquez-Del Mercado, Eduardo Gomez-Bañuelos, Efrain Chavarria-Avila, Ernesto Cardona-Muñoz, Carlos Ramos-Becerra, Adrián Alanis-Sanchez, David Cardona-Muller, Fernando Grover-Paez, Felipe de J Perez-Vazquez, Rosa-Elena Navarro-Hernandez, Jorge M Valadez-Soto, Adan A Saldaña-Millan, Lorena Gonzalez-Rosas, Gabriel Ramos-Lopez, Marcelo H Petri, Magnus Bäck
The aim of this study was to analyze the impact of disease duration on carotid to femoral pulse wave velocity (cfPWV) in rheumatoid arthritis (RA) patients without either known traditional cardiovascular risk factors or previous comorbidities.Patients with RA diagnosis attending the rheumatology outpatient clinic of Hospital Civil Juan I. Menchaca, Guadalajara, Mexico, were analyzed. A total of 106 RA patients without known traditional cardiovascular risk factors were selected. All subjects were evaluated for RA disease duration, RA disease activity score on 28 joints (DAS28), serum lipids, rheumatoid factor and anti-cyclic citrullinated peptide (anti-CCP) antibodies...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816632/the-liver-circadian-clock-modulates-biochemical-and-physiological-responses-to-metformin
#5
Emma Henriksson, Anne-Laure Huber, Erin K Soto, Anna Kriebs, Megan E Vaughan, Drew Duglan, Alanna B Chan, Stephanie J Papp, Madelena Nguyen, Megan E Afetian, Katja A Lamia
Metformin is widely used in the treatment of type 2 diabetes to lower blood glucose. Although metformin is a relatively safe and effective drug, its clinical efficacy is variable and under certain circumstances it may contribute to life-threatening lactic acidosis. Thus, additional understanding of metformin pharmacokinetics and pharmacodynamics could provide important information regarding therapeutic use of this widely prescribed drug. Here we report a significant effect of time of day on acute blood glucose reduction in response to metformin administration and on blood lactate levels in healthy mice...
August 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28815821/infant-feeding-patterns-and-eczema-in-children-in-the-first-6-years-of-life
#6
Nelís Soto-Ramírez, Suryatapa Kar, Hongmei Zhang, Wilfried Karmaus
BACKGROUND: Modes of infant feeding such as direct and indirect breastfeeding, and formula feeding, and their combinations may play a role in child health. OBJECTIVE: The aim was to investigate which feeding patterns in the first six months pose risks for eczema/skin allergy in children up to 6 years compared to direct breastfeeding for at least 3 months. METHODS: The Infant Feeding Practices Study II in the United States and its 6-year follow-up provided data on feeding modes in infancy and doctor's diagnosed eczema/skin allergy in the first 6 years of life (1,387 infants), based on parental reports...
August 16, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28815776/a-photochemical-and-electrochemical-triggered-bis-hydrazone-switch
#7
Mónica A Gordillo, Mónica Soto-Monsalve, Christian C Carmona-Vargas, Gustavo Gutierrez, Richard F D'vries, Jean-Marie Lehn, Manuel N Chaur
Herein, we report the synthesis of a double hydrazone capable of undergoing photochemical E/Z isomerization through the imine double bonds. The bis(hydrazone) 1-E,E can be considered as a "two-arm" system in which the controlled movement of each arm is obtained by photo-modulation, making possible the appearance of two isolable metastable isomeric states 1-E,Z and 1-Z,Z. Such states are characterized by very specific structural, optical and electrochemical properties. The latter, allows the reversible return from either 1-E,Z or 1-Z,Z to the 1-E,E state...
August 17, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28815041/-upregulation-of-cd47-by-the-endoplasmic-reticulum-stress-pathway-controls-anti-tumor-immune-responses
#8
Katherine L Cook, David R Soto-Pantoja
We recently demonstrated that targeting the unfolded protein response (UPR) protein GRP78 down-regulates CD47 expression, resulting in increased tumor macrophage infiltration and inhibited resistance to anti-estrogen therapy. We now show new data indicating that anti-estrogen therapy regulates CD47 expression and implicates its ligand, thrombospondin-1, in regulation of tumor macrophage infiltration. Moreover, GRP78 and CD47 co-expression is associated with poor prognosis in breast cancer patients, suggesting the existence of crosstalk between UPR and immunity that regulates therapeutic responses in breast cancer...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28814118/considerations-for-clinical-trial-design-in-older-adults-with-cancer
#9
Enrique Soto-Perez-de-Celis, Stuart M Lichtman
No abstract text is available yet for this article.
August 17, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28812288/effect-of-step-feeding-on-the-performance-of-lab-scale-columns-simulating-vertical-flow-horizontal-flow-constructed-wetlands
#10
Verónica Torrijos, Isabel Ruiz, Manuel Soto
The effect of step-feeding (untreated wastewater by-pass) on the performance of lab-scale columns simulating a hybrid vertical flow (VF)-horizontal flow (HF) constructed wetland (CW) system was studied. Step-feeding strategies have been adopted in several kinds of CW, but this is the first report about the use of step-feeding in VF + HF hybrid systems treating domestic wastewater. Applied loading rates were 7-11 g BOD5/m(2) day and 2.1-3.4 g TN/m(2) day (overall system). Removal efficiency reached 98% TSS and COD and 99% BOD5 on average, whilst a 50% by-pass improved TN removal from 31 to 50%...
August 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28812056/initiating-a-standardized-regional-referral-and-counter-referral-system-in-guatemala-a-mixed-methods-study
#11
Rupa Kapoor, Leslie Avendaño, Maria Antonieta Sandoval, Andrea T Cruz, Esther M Sampayo, Miguel A Soto, Elizabeth A Camp, Heather L Crouse
Background:Few data exist for referral processes in resource-limited settings. We utilized mixed-methods to evaluate the impact of a standardized algorithm and training module developed for locally identified needs in referral/counter-referral procedures between primary health centers (PHCs) and a Guatemalan referral hospital. Methods: PHC personnel and hospital physicians participated in surveys and focus groups pre-implementation and 3, 6, and 12 months post-implementation to evaluate providers' experience with the system...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28811340/type-iii-interferon-mediated-signaling-is-critical-for-controlling-live-attenuated-yellow-fever-virus-infection-in-vivo
#12
Florian Douam, Yentli E Soto Albrecht, Gabriela Hrebikova, Evita Sadimin, Christian Davidson, Sergei V Kotenko, Alexander Ploss
Yellow fever virus (YFV) is an arthropod-borne flavivirus, infecting ~200,000 people worldwide annually and causing about 30,000 deaths. The live attenuated vaccine strain, YFV-17D, has significantly contributed in controlling the global burden of yellow fever worldwide. However, the viral and host contributions to YFV-17D attenuation remain elusive. Type I interferon (IFN-α/β) signaling and type II interferon (IFN-γ) signaling have been shown to be mutually supportive in controlling YFV-17D infection despite distinct mechanisms of action in viral infection...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28810438/patients-with-limited-communication-in-end-of-life-situations-initial-psychometric-properties-of-a-discomfort-observation-scale
#13
Ana Lucila Soto-Rubio, José Manuel Tomás Miguel, Marián Pérez-Marín, Pilar Barreto Martín
This work presents an observational scale which takes into account different observable indicators of discomfort of patients in end-of-life situations with difficulties in communicating due to cognitive impairment, fatigue or sedation and provides details of its validation. In all, 71 adults participated. Model fit was adequate ( χ(2)(27) = 43.28, p = .024, comparative fit index = .975, root mean square error of approximation = .092 and confidence interval 90% (.033-.140)). Alpha coefficient was ...
March 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28810142/control-of-metastasis-by-nk-cells
#14
REVIEW
Alejandro López-Soto, Segundo Gonzalez, Mark J Smyth, Lorenzo Galluzzi
The metastatic spread of malignant cells to distant anatomical locations is a prominent cause of cancer-related death. Metastasis is governed by cancer-cell-intrinsic mechanisms that enable neoplastic cells to invade the local microenvironment, reach the circulation, and colonize distant sites, including the so-called epithelial-to-mesenchymal transition. Moreover, metastasis is regulated by microenvironmental and systemic processes, such as immunosurveillance. Here, we outline the cancer-cell-intrinsic and -extrinsic factors that regulate metastasis, discuss the key role of natural killer (NK) cells in the control of metastatic dissemination, and present potential therapeutic approaches to prevent or target metastatic disease by harnessing NK cells...
August 14, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28808771/multicentre-controlled-randomized-clinical-trial-to-compare-the-efficacy-and-safety-of-ambulatory-treatment-of-mild-acute-diverticulitis-without-antibiotics-with-the-standard-treatment-with-antibiotics
#15
Laura Mora Lopez, Neus Ruiz-Edo, Sheila Serra Pla, Anna Pallisera Llovera, Salvador Navarro Soto, Xavier Serra-Aracil
PURPOSE: Acute diverticulitis (AD) is a highly prevalent disease in Spain. Its chronic-recurrent appearance and high rate of relapse mean that it has a major epidemiological and economic impact on our health system. In spite of this, it has not been studied in any great depth. Reassessing its etiopathology, recent studies have observed that it is an inflammatory disease-not, as classic theories had postulated, an infectious one. In the light of these findings, the suitability of antibiotics for its treatment has been reconsidered...
August 14, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28807650/current-state-of-biosimilars-in-mexico-the-position-of-the-mexican-college-of-rheumatology-2016
#16
Daniel Xibille, Sandra Carrillo, Gabriela Huerta-Sil, Ramiro Hernández, Leonardo Limón, Guadalupe Olvera-Soto, Luis Javier Jara-Quezada, Abdieel Esquivel, Marcela Pérez-Rodríguez
The present document is a position statement of the Mexican College of Rheumatology on the use of biosimilars in rheumatic diseases. This position considers that biosimilars should be considered as interchangeable, that automatic substitution without previous notice in stable patients during follow-up is not ethical, that the approval of a biosimilar should only be given after exhaustive review of preclinical and clinical data marked by Mexican regulations, that it should be clearly stated in the nomenclature of biologic drugs which is the innovator and which is the biosimilar, that it is not correct to choose a biosimilar as treatment based only on economic reasons or extrapolate indications based only on the approval of the innovator and in the absence of safety and efficacy data for the biosimilar...
August 11, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28806562/zika-virus-induced-neurological-critical-illness-in-latin-america-severe-guillain-barre-syndrome-and-encephalitis
#17
Sebastián U Ugarte, Angel Ricardo V Arenas, Bruno C Alvarez, Angela Cubides, Angélica F Luna, Max Arroyo-Parejo, Cayri E Acuña, Agamenón V Quintero, Orlando Ch Villareal, Oscar S Pinillos, Elías Vieda, Manuel Bello, Susana Peña, Carmelo Dueñas-Castell, Gloria M V Rodriguez, Jorge L M Ranero, Rosa L M López, Sandra G Olaya, José C Vergara, Ana Tandazo, Juan P S Ospina, Igor M Leyton Soto, R A Fowler, John C Marshall
Zika virus (ZIKAV) is classically described as causing minor symptoms in adult patients, however neurologic complications have been recognized. The recent outbreak in Central and South America has resulted in serious illness in some adult patients. We report adult patients in Latin America diagnosed with ZIKAV infection admitted to Intensive Care Units (ICUs). METHODS: Multicenter, prospective case series of adult patients with laboratory diagnosis of ZIKAV in 16 ICUs in 8 countries. RESULTS: Between December 1st 2015 and April 2nd 2016, 16 ICUs in 8 countries enrolled 49 critically ill patients with diagnosis of ZIKAV infection...
August 9, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28800480/frail-elderly-with-and-without-cognitive-impairment-at-the-end-of-life-their-emotional-state-and-the-wellbeing-of-their-family-caregivers
#18
Ana Soto-Rubio, Marián Pérez-Marín, Pilar Barreto
PURPOSE OF THE STUDY: (1) To identify the main predictors of the emotional state of the frail elderly at the end-of-life and that of their primary family caregivers, taking into consideration the presence/absence of significant cognitive impairment in the patient and (2) to analyse the relationship between the emotional state of the patient and that of their primary family caregiver. METHODS: Our study is cross-sectional. 85 frail elderly patients at the end-of-life and their primary family caregivers participated...
July 31, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28800217/engineering-antibody-reactivity-for-efficient-derivatization-to-generate-nav1-7-inhibitory-gptx-1-peptide-antibody-conjugates
#19
Kaustav Biswas, Thomas E Nixey, Justin K Murray, James R Falsey, Li Yin, Hantao Liu, Jacinthe Gingras, Brian E Hall, Brad Herberich, Jerry Ryan Holder, Hongyan Li, Joseph Ligutti, Min-Hwa Jasmine Lin, Dong Liu, Brian D Soriano, Marcus Soto, Linh Tran, Christopher M Tegley, Anrou Zou, Kannan Gunasekaran, Bryan D Moyer, Liz Doherty, Les P Miranda
The voltage-gated sodium channel NaV1.7 is a genetically-validated pain target under investigation for the development of analgesics. A therapeutic with a less frequent dosing regimen would be of value for treating chronic pain, however functional NaV1.7 targeting antibodies are not known. In this report we describe NaV1.7 inhibitory peptide-antibody conjugates as an alternate construct for potential prolonged channel blockade through chemical derivatization of engineered antibodies. We previously identified NaV1...
August 11, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28800119/new-insights-contributing-to-the-development-of-effective-vaccines-and-therapies-to-reduce-the-pathology-caused-by-hrsv
#20
REVIEW
Nicolás M S Gálvez, Jorge A Soto, Alexis M Kalergis
Human Respiratory Syncytial Virus (hRSV) is one of the major causes of acute lower respiratory tract infections (ALRTI) worldwide, leading to significant levels of immunocompromisation as well as morbidity and mortality in infants. Its main target of infection is the ciliated epithelium of the lungs and the host immune responses elicited is ineffective at achieving viral clearance. It is thought that the lack of effective immunity against hRSV is due in part to the activity of several viral proteins that modulate the host immune response, enhancing a Th2-like pro-inflammatory state, with the secretion of cytokines that promote the infiltration of immune cells to the lungs, with consequent damage...
August 11, 2017: International Journal of Molecular Sciences
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