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Práxedes Sánchez, Martín Hernández-Juárez, Eleuterio Álvarez, Margarita Paneque, Nuria Rendón, Andrés Suárez
Coordination studies of new lutidine-derived hybrid NHC/phosphine ligands (CNP) to Pd and Ir have been performed. Treatment of the square-planar [Pd(CNP)Cl](AgCl2) complex 2a with KHMDS produces the selective deprotonation at the CH2P arm of the pincer to yield the pyridine-dearomatised complex 3a. A series of cationic [Ir(CNP)(cod)](+) complexes 4 has been prepared by reaction of the imidazolium salts 1 with Ir(acac)(cod). These derivatives exhibit in the solid state, and in solution, a distorted trigonal bipyramidal structure in which the CNP ligands adopt an unusual C(axial)-N(equatorial)-P(equatorial) coordination mode...
October 4, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Adrián Rendon, Rosella Centis, Lia D'Ambrosio, Giovanni Battista Migliori
No abstract text is available yet for this article.
October 4, 2016: Archivos de Bronconeumología
Guadalupe Barrera-Escorcia, Irma Wong-Chang, Carlos Leopoldo Fernández-Rendón, Alfonso Vázquez Botello, Bruno Gómez-Gil, Marcial Leonardo Lizárraga-Partida
Oysters can accumulate potentially pathogenic water bacteria. The objective of this study was to compare two procedures to quantify Vibrio species present in oysters to determine the most sensitive method. We analyzed oyster samples from the Gulf of Mexico, commercialized in Mexico City. The samples were inoculated in tubes with alkaline peptone water (APW), based on three tubes and four dilutions (10(-1) to 10(-4)). From these tubes, the first quantification of Vibrio species was performed (most probable number (MPN) from tubes) and bacteria were inoculated by streaking on thiosulfate-citrate-bile salts-sucrose (TCBS) petri dishes...
November 2016: Environmental Monitoring and Assessment
Allison M Bailey, Nikki M Rendon, Kyle J O'Malley, Gregory E Demas
Animals living in temperate regions prepare for harsh winter conditions by responding to environmental cues that signal resource availability (e.g., food, day length). Siberian hamsters (Phodopus sungorus) breed in long, summer-like days (LD, >14h light), i.e., photoperiods, and undergo robust gonadal regression and become more aggressive when exposed to short, winter-like photoperiods that signal impending limited resources (SD, <10h light). When hamsters are reared within an intermediate photoperiod (ID, 13...
September 28, 2016: Physiology & Behavior
Bhavik N Patel, Jose M Lopez, Brian G Jiang, Christopher J Roth, Rendon C Nelson
PURPOSE: To determine the value of image-rich radiology reports (IRRR) by evaluating the interest and preferences of referring physicians, potential impact on clinical workflow, and the willingness of radiologists to create them. METHODS: Referring physicians and radiologists were interviewed in this prospective, HIPAA-compliant study. Subject willingness to participate in the study was determined by an e-mail. A single investigator conducted all interviews using a standard questionnaire...
September 28, 2016: Journal of the American College of Radiology: JACR
Erica R Pursell, Daniela Vélez-Rendón, Daniela Valdez-Jasso
In a MCT induced-PAH rat animal model, the dynamic stress-strain relation was investigated in the circumferential and axial direction using a linear elastic response model within the quasi-linear viscoelasticity theory framework. Right and left pulmonary arterial segments (RPA, LPA) were mechanically tested in a tubular biaxial device at the early stage (1 week post-MCT treatment) and at the advanced stage of the disease (4 weeks post-MCT treatment). The vessels were tested circumferentially at the in vivo axial length with matching in vivo measured pressure ranges...
September 29, 2016: Journal of Biomechanical Engineering
Eduardo Arevalo Vidal, Francisco Abarca Rendon, Trino Andrade Zambrano, Yudoco Andrade García, Mario Ferrin Viteri, Josemberg Marins Campos, Manoela Galvão Ramos, Almino Cardoso Ramos
Background: Intestinal malrotation is a rare congenital anomaly. In adults is very difficult to recognize due to the lack of symptoms. Diagnosis is usually incidental during surgical procedures or at autopsy. Aim: To review the occurrence and recognition of uneventful intestinal malrotation discovered during regular cases of bariatric surgeries. Methods: Were retrospectively reviewed the medical registry of 20,000 cases undergoing bariatric surgery, from January 2002 to January 2016, looking for the occurrence of intestinal malrotation and consequences in the intraoperative technique and immediate evolution of the patients...
2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
Paula Andrea Báez, Carlos Mario Jaramillo, Lina Arismendi, Julio Cesar Rendón, Fabián Cortés-Mancera, Dioselina Peláez, María Mercedes González, Francisco Molina, María Cristina Navas
INTRODUCTION: Hepatitis A virus (HAV) is an important pathogen, typically transmitted via the faecal-oral route. The epidemiology of the infection is directly related to drinking water access and adequate disposal of sewage water.  OBJECTIVE: To determine the presence and identify the genotype of HAV in environmental samples from eight municipalities and two villages in Antioquia, northwestern Colombia.  MATERIALS AND METHODS: Three serial samplings were done between December, 2012, and April, 2014...
2016: Biomédica: Revista del Instituto Nacional de Salud
Marco Atzori, Roberto Cuevas-Olguin, Eric Esquivel-Rendon, Francisco Garcia-Oscos, Roberto C Salgado-Delgado, Nadia Saderi, Marcela Miranda-Morales, Mario Treviño, Juan C Pineda, Humberto Salgado
Norepinephrine (NE) is synthesized in the Locus Coeruleus (LC) of the brainstem, from where it is released by axonal varicosities throughout the brain via volume transmission. A wealth of data from clinics and from animal models indicates that this catecholamine coordinates the activity of the central nervous system (CNS) and of the whole organism by modulating cell function in a vast number of brain areas in a coordinated manner. The ubiquity of NE receptors, the daunting number of cerebral areas regulated by the catecholamine, as well as the variety of cellular effects and of their timescales have contributed so far to defeat the attempts to integrate central adrenergic function into a unitary and coherent framework...
2016: Frontiers in Synaptic Neuroscience
Arturo Fajardo-Gutiérrez, Guadalupe González-Miranda, Adriana Pachuca-Vázquez, Aldo Allende-López, Liria Mitzuko Fajardo-Yamamoto, Mario Enrique Rendón-Macías
OBJECTIVE: To identify the cancer incidence and mortality in Mexican Social Security Institute beneficiary (MSSI-B) children during 1996-2013. MATERIALS AND METHODS: Both cancer cases (n=4 728) and deaths (n=2 378) were analyzed in MSSI-B children who were registered in five states of the Mexican Republic. The incidence and mortality trends and the incidences (rate x 1 000 000 children / year) of the type of cancer, age, sex, and place of residence were obtained...
April 2016: Salud Pública de México
Rossana Villegas Gracia, Catalina Franco Alzate, Javier Rendón Henao, José Domingo Torres Hernández, Patricia Elena Jaramillo Arbelaez
INTRODUCTION: Monoclonal B-cell lymphocytosis is a symptom free condition characterized by the circulation of small clonal population of B lymphocytes in peripheral blood (less than 5x10(9)/L) expressing an immunophenotype similar to chronic lymphocytic leukemia. Different studies based on big hospital series have manifested a higher risk in subjects with monoclonal B-cell lymphocytosis to progress to a chronic lymphocytic leukemia. The behavior of this hematologic entity is unknown therefore its frequency in sporadic chronic lymphocytic leukemia patient relatives was determined...
2016: Colombia Médica: CM
Ketzasmin A Terrón-Mejía, Roberto López-Rendón, Armando Gama Goicochea
A proper treatment of electrostatic interactions is crucial for the accurate calculation of forces in computer simulations. Electrostatic interactions are typically modeled using Ewald-based methods, which have become some of the cornerstones upon which many other methods for the numerical computation of electrostatic interactions are based. However, their use with charge distributions rather than point charges requires the inclusion of ansatz for the solutions of the Poisson equation, since there is no exact solution known for smeared out charges...
October 26, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
P O Richard, M A S Jewett, S Tanguay, O Saarela, Z Liu, F Pouliot, A Kapoor, R Rendon, A Finelli
OBJECTIVE: To validate the safety, accuracy and reliability of RTB and its role in decreasing unnecessary treatment in a multi-institution review. MATERIALS AND METHODS: This was a multi-institution retrospective study of patients who underwent RTB to characterize a SRM between 2011 and May 2015. Subjects were identified using the prospectively maintained Canadian Kidney Cancer information system (CKCis). Diagnostic and concordance rates were presented using proportions whereas factors associated with a diagnostic RTB were identified using a logistic regression model...
August 16, 2016: BJU International
Gabriel J Rendón, Lina Echeverri, Francisco Echeverri, Carlos Millán Sanz-Lomana, Pedro T Ramirez, Rene Pareja
OBJECTIVE: The goal of our study was to report on the feasibility of outpatient laparoscopic radical hysterectomy in patients with early-stage cervical cancer. METHODS: We included all patients who underwent a laparoscopic radical hysterectomy at the Instituto de Cancerología - Las Americas in Medellin, Colombia, between January 2013 and July 2015. The control group was a similar cohort of patients who were admitted after their surgery. RESULTS: Seventy-six patients were included [outpatient (31) and admitted (45)]...
August 9, 2016: Gynecologic Oncology
Alexandra M Burgess, Patricia Marten DiBartolo, María Jose Rendón
Although culture-based measurement bias threatens the validity of intergroup comparison research, measurement invariance is often assumed rather than demonstrated by researchers who draw conclusions about cross-cultural similarities or differences. The current article investigates the cross-cultural invariance of a popular measure of perfectionism, the Frost Multidimensional Perfectionism Scale (F-MPS; Frost, Marten, Lahart, & Rosenblate, 1990) for a Hispanic/Latina sample. Perfectionism, which encompasses high goal setting and sensitivity to critical evaluation, is a transdiagnostic risk factor for internalizing psychopathology that especially warrants focus among groups burdened by mental health disparities...
August 8, 2016: Psychological Assessment
Sarah Safadi, Patrick Rendon, Teresa Rutledge, Shadi Mayasy
Ovarian cancer metastasis to the spinal cord is quite rare, and few case reports have been published previously. Herein, we present a case of a patient who was treated for ovarian cancer and was thought to be disease free for 17 months, then presented with lower limb weakness. She was found to have a T11-T12 metastatic intramedullary spinal cord lesion. On pathology, the diagnosis of metastatic ovarian adenocarcinoma was made. This report highlights the importance of maintaining a low threshold for ovarian cancer metastases to the spinal cord when patients present with neurologic sequelae, even in the setting of normal laboratory values, as early detection can prevent permanent neurological consequences...
July 2016: Journal of Investigative Medicine High Impact Case Reports
A Vargas-Meza, M Chavez-Tostado, A O Cortes-Flores, D Urias-Valdez, M Delgado-Gomez, G Morgan-Villela, C Zuloaga-Fernandez Del Valle, J Jimenez-Tornero, R Zuloaga-Fernandez Del Valle, C Fuentes-Orozco, J García-Rentería, J Rendón-Félix, L Cuesta-Márquez, A Gonzalez-Ojeda
Weight gain is observed in breast cancer patients receiving chemotherapy and is a well-known complication. Several factors that contributing to weight gain have been identified. However, there is a lack of information about factors associated with weight changes following adjuvant chemotherapy. A retrospective cohort of 200 pre- and post-menopausal Mexican patients treated for breast cancer was made. Anthropometric variables were measured before/after treatment. Biomarkers, cellular differentiation and chemotherapy were similar between groups...
August 1, 2016: European Journal of Cancer Care
Connor M Forbes, Ricardo A Rendon, Antonio Finelli, Anil Kapoor, Ronald B Moore, Rodney H Breau, Louis Lacombe, Jun Kawakami, Darrel E Drachenberg, Stephen E Pautler, Michael M A Jewett, Olli Saarela, Zhihui Liu, Simon Tanguay, Peter C Black
PURPOSE: Partial nephrectomy (PN) for early stage renal cancer preserves renal function better than radical nephrectomy (RN) and is generally considered oncologically similar. The Intergroup European Organisation for Research and Treatment of Cancer trial comparing outcomes after PN vs. RN, however, showed reduced overall survival in the PN group. Our aim was to evaluate recurrence, death, and renal function after PN vs. RN for T1 tumors in a Canadian population. MATERIALS AND METHODS: From 2000 to 2015, 2,358 patients with a first occurrence of a clinical T1 renal cancer who underwent PN or RN were identified from the Canadian Kidney Cancer Information System...
July 13, 2016: Urologic Oncology
José Alberto Castellanos-González, Verónica Torres-Martínez, Adriana Martínez-Ruiz, Clotilde Fuentes-Orozco, Jorge Rendón-Félix, Leire Irusteta-Jiménez, Aída Rebeca Márquez-Valdez, José Antonio Cortés-Lares, Alejandro González-Ojeda
BACKGROUND: The aim of this study was to determine the prevalence and severity of dry eye syndrome in a group of Mexican residents of different surgical specialties. METHODS: A cross-sectional descriptive study where the residents were studied using the Ocular Surface Disease Index, together with diagnostic tests for dry eye syndrome, such as tear breakup time, Oxford Schema, Schirmer's test I, and meibomian gland dysfunction testing. Statistical analyses were performed by Pearson's chi-squared test for categorical variables and student's t-test for quantitative variables...
2016: BMC Ophthalmology
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