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44 papers found.
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Analysis of Bi Distribution in Epitaxial GaAsBi by Aberration-Corrected HAADF-STEM

The Bi content in GaAs/GaAs1 − xBi x /GaAs heterostructures grown by molecular beam epitaxy at a substrate temperature close to 340 °C is investigated by aberration-corrected high-angle annular dark-field techniques. The analysis at low magnification of high-angle annular dark-field scanning transmission electron microscopy images, corroborated by EDX analysis, revealed planar...

Catalogue of the morphological features in the Spitzer Survey of Stellar Structure in Galaxies (S4G)

Context. A catalogue of the features for the complete Spitzer Survey of Stellar Structure in Galaxies (S4G), including 2352 nearby galaxies, is presented. The measurements are made using 3.6 μm images, largely tracing the old stellar population; at this wavelength the effects of dust are also minimal. The measured features are the sizes, ellipticities, and orientations of bars...

Epigenetic Differentiation Persists after Male Gametogenesis in Natural Populations of the Perennial Herb Helleborus foetidus (Ranunculaceae)

. Guitian J , Medrano M , Herrera CM , Sanchez-Lafuente AM ( 2003 ) Variation in the structural gender in the hermaphrodite Helleborus foetidus (Ranunculaceae): within- and among-population patterns . Plant

Enhancing dendritic cell immunotherapy for melanoma using a simple mathematical model

. Ignacio Tello G. Piñon-Zaráte M. Herrera-Enríquez AE. Castell-Rodríguez Background: The immunotherapy using dendritic cells (DCs) against different varieties of cancer is an approach that has been

The Dose Response Multicentre Investigation on Fluid Assessment (DoReMIFA) in critically ill patients

Background The previously published “Dose Response Multicentre International Collaborative Initiative (DoReMi)” study concluded that the high mortality of critically ill patients with acute kidney injury (AKI) was unlikely to be related to an inadequate dose of renal replacement therapy (RRT) and other factors were contributing. This follow-up study aimed to investigate the...

Multilocus Sequence Analysis of Nectar Pseudomonads Reveals High Genetic Diversity and Contrasting Recombination Patterns

The genetic and evolutionary relationships among floral nectar-dwelling Pseudomonas ‘sensu stricto’ isolates associated to South African and Mediterranean plants were investigated by multilocus sequence analysis (MLSA) of four core housekeeping genes (rrs, gyrB, rpoB and rpoD). A total of 35 different sequence types were found for the 38 nectar bacterial isolates characterised...

Phase II Trial of Sorafenib in Patients with Chemotherapy Refractory Metastatic Esophageal and Gastroesophageal (GE) Junction Cancer

Purpose Vascular endothelial growth factor receptor (VEGFR2) directed therapies result in a modest survival benefit for patients with advanced esophageal and gastroesophageal (GE) junction cancer. Platelet-derived growth factor receptor (PDGFR) may contribute to escape from VEGFR2 inhibition. We evaluated the efficacy of sorafenib, a broad spectrum tyrosine kinase inhibitor...

Latin American Study of Nutrition and Health (ELANS): rationale and study design

. Herrera-Cuenca 16 M. C. Yépez 15 R. G. Pareja 10 V. Guajardo 7 I. Z. Zimberg 0 8 A. D. P. Chiavegatto Filho 5 M. Pratt 6 B. Koletzko 3 K. L. Tucker 4 the ELANS Study Group 0 Universidade Federal de São

Vitronectin Expression in the Airways of Subjects with Asthma and Chronic Obstructive Pulmonary Disease

Vitronectin, a multifunctional glycoprotein, is involved in coagulation, inhibition of the formation of the membrane attack complex (MAC), cell adhesion and migration, wound healing, and tissue remodeling. The primary cellular source of vitronectin is hepatocytes; it is not known whether resident cells of airways produce vitronectin, even though the glycoprotein has been found in...

Perinatal Asphyxia Leads to PARP-1 Overactivity, p65 Translocation, IL-1β and TNF-α Overexpression, and Apoptotic-Like Cell Death in Mesencephalon of Neonatal Rats: Prevention by Systemic Neonatal Nicotinamide Administration

. Gutierrez-Hernandez D. Bustamante P. Morales P. Gebicke-Haerter M. Herrera-Marschitz (&) Programme of Molecular & Clinical Pharmacology, ICBM, University of Chile , P.O. Box 70.000, Santiago 7 , Chile 1 T ... . Neira-Pen a E. Rojas-Mancilla M. Herrera-Marschitz Millenium Institute BNI-Chile , Santiago , Chile 2 M. Herrera-Marschitz Av. Independencia , Independencia, Santiago , Chile 3 M. Herrera-Marschitz c/o

The Genetics of Obesity

Blanca M. Herrera Cecilia M. Lindgren 0 ) Wellcome Trust Centre for Human Genetics, University of Oxford , Roosevelt Drive, Oxford OX3 7BN, UK Obesity is a result of excess body fat accumulation

Distinct Leishmania Species Infecting Wild Caviomorph Rodents (Rodentia: Hystricognathi) from Brazil

Background Caviomorph rodents, some of the oldest Leishmania spp. hosts, are widely dispersed in Brazil. Despite both experimental and field studies having suggested that these rodents are potential reservoirs of Leishmania parasites, not more than 88 specimens were analyzed in the few studies of natural infection. Our hypothesis was that caviomorph rodents are inserted in the...

Diurnal Variation in Urodynamics of Rat

In humans, the storage and voiding functions of the urinary bladder have a characteristic diurnal variation, with increased voiding during the day and urine storage during the night. However, in animal models, the daily functional differences in urodynamics have not been well-studied. The goal of this study was to identify key urodynamic parameters that vary between day and night...

Worse Renal Disease in Postmenopausal F2[Dahl S x R]-Intercross Rats: Detection of Novel QTLs Affecting Hypertensive Kidney Disease

The prevalence of hypertension increases after menopause with 75% of postmenopausal women developing hypertension in the United States, along with hypertensive end organ diseases. While human and animal model studies have indicated a protective role for estrogen against cardiovascular disease and glomerulosclerosis, clinical studies of hormone replacement therapy in...

Analysis of cd45- [cd34+/kdr+] Endothelial Progenitor Cells as Juvenile Protective Factors in a Rat Model of Ischemic-Hemorrhagic Stroke

Giordano 0 Nelson Ruiz-Opazo 0 Victoria L. M. Herrera 0 Thiruma V. Arumugam, University of Queensland, Australia 0 Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of

Differential Genetic Basis for Pre-Menopausal and Post-Menopausal Salt-Sensitive Hypertension

Essential hypertension affects 75% of post-menopausal women in the United States causing greater cardiovascular complications compared with age-matched men and pre-menopausal women. Hormone replacement and current anti-hypertensive therapies do not correct this post-menopausal increased risk suggesting a distinct pathogenic framework. We investigated the hypothesis that distinct...

Dahl (S x R) Congenic Strain Analysis Confirms and Defines a Chromosome 5 Female-Specific Blood Pressure Quantitative Trait Locus to <7 Mbp

The detection of multiple sex-specific blood pressure (BP) quantitative trait loci (QTLs) in independent total genome analyses of F2 (Dahl S x R)-intercross male and female rat cohorts confirms clinical observations of sex-specific disease cause and response to treatment among hypertensive patients, and mandate the identification of sex-specific hypertension genes/mechanisms. We...

Kinesin Light Chain 1 Suppression Impairs Human Embryonic Stem Cell Neural Differentiation and Amyloid Precursor Protein Metabolism

The etiology of sporadic Alzheimer disease (AD) is largely unknown, although evidence implicates the pathological hallmark molecules amyloid beta (Aβ) and phosphorylated Tau. Work in animal models suggests that altered axonal transport caused by Kinesin-1 dysfunction perturbs levels of both Aβ and phosphorylated Tau in neural tissues, but the relevance of Kinesin-1 dependent...

Preparation of hollow magnetite microspheres and their applications as drugs carriers

Hollow magnetite microspheres have been synthesized by a simple process through a template-free hydrothermal approach. Hollow microspheres were surface modified by coating with a silica nanolayer. Pristine and modified hollow microparticles were characterized by field-emission electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron...

Inhospitable sweetness: nectar filtering of pollinator-borne inocula leads to impoverished, phylogenetically clustered yeast communities

November 13, 2014 C. M. Herrera et al. Nectar filtering of yeasts nectar seem to be characterized by lower species richness (Vo r os-Felkai 1957; Eisikowitch et al. 1990; BryschHerzberg 2004) than those ... of inocula to generate Downloaded from on November 13, 2014 Nectar filtering of yeasts C. M. Herrera et al. 749 two types of artificial yeast communities, by