Counteractive effects of antenatal glucocorticoid treatment on D1 receptor modulation of spatial working memory

RATIONALE: Antenatal exposure to the glucocorticoid dexamethasone dramatically increases the number of mesencephalic dopaminergic neurons in rat offspring. However, the consequences of this expansion in midbrain dopamine (DA) neurons for behavioural processes in adulthood are poorly understood, including working memory that depends on DA transmission in the prefrontal cortex (PFC). OBJECTIVES: We therefore investigated the influence of antenatal glucocorticoid treatment (AGT) on the modulation of spatial working memory by a D1 receptor agonist and on D1 receptor binding and DA content in the PFC and striatum. METHODS: Pregnant rats received AGT on gestational days 16-19 by adding dexamethasone to their drinking water. Male offspring reared to adulthood were trained on a delayed alternation spatial working memory task and administered the partial D1 agonist SKF38393 (0.3-3 mg/kg) by systemic injection. In separate groups of control and AGT animals, D1 receptor binding and DA content were measured post-mortem in the PFC and striatum. RESULTS: SKF38393 impaired spatial working memory performance in control rats but had no effect in AGT rats. D1 binding was significantly reduced in the anterior cingulate cortex, prelimbic cortex, dorsal striatum and ventral pallidum of AGT rats compared with control animals. However, AGT had no significant effect on brain monoamine levels. CONCLUSIONS: These findings demonstrate that D1 receptors in corticostriatal circuitry down-regulate in response to AGT. This compensatory effect in D1 receptors may result from increased DA-ergic tone in AGT rats and underlie the resilience of these animals to the disruptive effects of D1 receptor activation on spatial working memory.

The restorative role of annexin A1 at the blood–brain barrier

Annexin A1 is a potent anti-inflammatory molecule that has been extensively studied in the peripheral immune system, but has not as yet been exploited as a therapeutic target/agent. In the last decade, we have undertaken the study of this molecule in the central nervous system (CNS), focusing particularly on the primary interface between the peripheral body and CNS: the blood–brain barrier. In this review, we provide an overview of the role of this molecule in the brain, with a particular emphasis on its functions in the endothelium of the blood–brain barrier, and the protective actions the molecule may exert in neuroinflammatory, neurovascular and metabolic disease. We focus on the possible new therapeutic avenues opened up by an increased understanding of the role of annexin A1 in the CNS vasculature, and its potential for repairing blood–brain barrier damage in disease and aging.

Strontium isotopes and sedimentology of a marine Triassic succession (upper Ladinian) of the westernmost Tethys, Spain

Chemical Stratigraphy, or the study of the variation of chemical elements within sedimentary sequences, has gradually become an experienced tool in the research and correlation of global geologic events. In this paper 87Sr/ 86Sr ratios of the Triassic marine carbonates (Muschelkalk facies) of southeast Iberian Ranges, Iberian Peninsula, are presented and the representative Sr-isotopic curve constructed for the upper Ladinian interval. The studied stratigraphic succession is 102 meters thick, continuous, and well preserved. Previous paleontological data from macro and micro, ammonites, bivalves, foraminifera, conodonts and palynological assemblages, suggest a Fassanian-Longobardian age (Late Ladinian). Although diagenetic minerals are present in small amounts, the elemental data content of bulk carbonate samples, especially Sr contents, show a major variation that probably reflects palaeoenvironmental changes. The 87Sr/86Sr ratios curve shows a rise from 0.707649 near the base of the section to 0.707741 and then declines rapidly to 0.707624, with a final values rise up to 0.70787 in the upper part. The data up to meter 80 in the studied succession is broadly concurrent with 87Sr/86Sr ratios of sequences of similar age and complements these data. Moreover, the sequence stratigraphic framework and its key surfaces, which are difficult to be recognised just based in the facies analysis, are characterised by combining variations of the Ca, Mg, Mn, Sr and CaCO3 contents

On the microstructure, growth pattern and original porosity of belemnite rostra: insights from calcitic Jurassic belemnites

Calcitic belemnite rostra are usually employed to perform paleoenvironmental studies based on geochemical data. However, several questions, such as their original porosity and microstructure, remain open, despite they are essential to make accurate interpretations based on geochemical analyses.This paper revisits and enlightens some of these questions. Petrographic data demonstrate that calcite crystals of the rostrum solidum of belemnites grow from spherulites that successively develop along the apical line, resulting in a “regular spherulithic prismatic” microstructure. Radially arranged calcite crystals emerge and diverge from the spherulites: towards the apex, crystals grow until a new spherulite is formed; towards the external walls of the rostrum, the crystals become progressively bigger and prismatic. Adjacent crystals slightly vary in their c-axis orientation, resulting in undulose extinction. Concentric growth layering develops at different scales and is superimposed and traversed by a radial pattern, which results in the micro-fibrous texture that is observed in the calcite crystals in the rostra.Petrographic data demonstrate that single calcite crystals in the rostra have a composite nature, which strongly suggests that the belemnite rostra were originally porous. Single crystals consistently comprise two distinct zones or sectors in optical continuity: 1) the inner zone is fluorescent, has relatively low optical relief under transmitted light (TL) microscopy, a dark-grey color under backscatter electron microscopy (BSEM), a commonly triangular shape, a “patchy” appearance and relatively high Mg and Na contents; 2) the outer sector is non-fluorescent, has relatively high optical relief under TL, a light-grey color under BSEM and low Mg and Na contents. The inner and fluorescent sectors are interpreted to have formed first as a product of biologically controlled mineralization during belemnite skeletal growth and the non-fluorescent outer sectors as overgrowths of the former, filling the intra- and inter-crystalline porosity. This question has important implications for making paleoenvironmental and/or paleoclimatic interpretations based on geochemical analyses of belemnite rostra.Finally, the petrographic features of composite calcite crystals in the rostra also suggest the non-classical crystallization of belemnite rostra, as previously suggested by other authors.

Latina Super-heroines: Hot Tamales in Tights vs. Women Warriors, Wrestlers and Guerrilla Fighters of La Raza

The year 1977 saw the making of the first Latino superhero by a Latino artist. From the 1980s onwards it is also possible to find Latina super-heroines, whose number and complexity has kept increasing ever since. Yet, the representations of spandexed Latinas are still few. For that reason, the goal of this paper is, firstly, to gather a great number of Latina super-heroines and, secondly, to analyze the role that they have played in the history of American literature and art. More specifically, it aims at comparing the spandexed Latinas created by non-Latino/a artists and mainstream comic enterprises with the Latina super-heroines devised by Latino/a artists. The conclusion is that whereas the former tend to conceive heroines within the constraints of the logic of Girl Power, the latter choose to imbue their works with a more daring political content and to align their heroines with the ideologies of Feminism and Postcolonialism.

GPs Experience of Caring for Children with Cancer Receiving Palliative Care at Home

Background The study being undertaken builds on earlier work that found general practitioners (GPs) were at times uncertain of their role in paediatric palliative care and questioned whether their involvement had been beneficial to the child and family. The rarity of childhood cancer makes it difficult for GPs to develop or maintain palliative care knowledge and skills yet the GP is perceived by the family as the gatekeeper of care within the community. Aim The study is examining GPs perception of their role in caring for an individual child with cancer receiving palliative care and comparing this with families' perceptions of their GP's roles. Methodology The methodology incorporates tape-recorded semi-structured interviews, thematic framework analysis and Q methodology (QM) to capture the experiences of GPs who have cared for a child with cancer receiving palliative care as well as the perspectives of care experienced by the families. The semi-structured interview sample comprises 10 families (parents/guardians) whose child has been treated at a regional childhood cancer centre and their GPs. A further 40–60 GPs will be involved in the QM. Findings Findings detailing GP experiences from the initial study along with the preliminary findings of the semi-structured interviews with parents and GPs will be presented. Papers' contribution The results will identify and clarify GPs perceptions of their roles, and what families perceive their GPs role to be, enabling development of strategies to support GPs roles. It is anticipated that findings will inform the wider field of palliative care generally and the practice of both hospital and community paediatricians.

Classic Nintendo games are (computationally) hard

We prove NP-hardness results for five of Nintendo's largest video game franchises: Mario, Donkey Kong, Legend of Zelda, Metroid, and Pokémon. Our results apply to generalized versions of Super Mario Bros.1-3, The Lost Levels, and Super Mario World; Donkey Kong Country 1-3; all Legend of Zelda games; all Metroid games; and all Pokémon role-playing games. In addition, we prove PSPACE-completeness of the Donkey Kong Country games and several Legend of Zelda games.

The lives, acts, and martyrdoms, of the apostles of Our Saviour. To which are added lives of the evangelists, Mark and Luke.

Originally published (London, 1675) as Antiquitates apostolicae ... as a continuation of Antiquitates christianae by Jeremy Taylor. Later editions published with numerous variations in title.

Map of Woodsburgh, Long Island.

Hand colored.

Twelve edible mushrooms of the United States, illustrated with twelve colored types. How to select and prepare for the table.

A reprint from the Annual report of the U. S. Department of agriculture, 1885.

Einsatzstrategien von Zeitarbeit in Unternehmen

Zeitarbeit ist eine Boombranche. Zeitarbeit ist prekäre Beschäftigung. Mit Zeitarbeit wird Missbrauch getrieben. Zeitarbeit ist wichtig. Jeder, der die öffentliche Diskussion verfolgt, hat einen dieser Sätze schon einmal gehört. Wir reden über Zeitarbeit, wie über die Frage, ob Entlohnung gut oder schlecht ist. Vergessen wird dabei oft, dass Zeitarbeit nicht gleich Zeitarbeit ist, sondern sich Motive und Einsatz der Zeitarbeit von Unternehmen zu Unternehmen deutlich unterscheiden können. So kann ein Personaldienstleister Hausfrauen an eine Versicherung vermitteln, um dort für die Reinigung und Sauberkeit der Büros zu sorgen. Ebenso kann ein Ingenieurbüro eigene Mitarbeiter an eine Kraftwerksfirma verleihen, um hochspezielle Projektaufgaben an einem Solarkraftwerk zu verrichten. Und genau darum geht es, wenn wir die Zukunft der Zeitarbeit gestalten wollen: herauszufinden, unter welchen Bedingungen und für welche Zwecke Zeitarbeit in Unternehmen eingesetzt wird und was ihre Nutzung fördert bzw. behindert. Um darauf eine Antwort zu haben, muss man zunächst die Verschiedenartigkeit der Zeitarbeit anerkennen. Im Anschluss daran muss man herausfinden, welchen Typ Zeitarbeit man in einem bestimmten Unternehmen vor sich hat, wovon dieser beeinflusst wird und was man anders oder besser machen kann. Es geht in diesem Beitrag also zuallererst darum, Motive der Zeitarbeitsnutzung herauszuarbeiten und zu untersuchen, wie sie zu verschiedenen Formen des Zeitarbeitseinsatzes in Unternehmen führen.

CHARLESTON AFTER THE EARTHQUAKE August 31st 1886

[18] p. : ill. ; 9 x 13 cm. This is a lithographic souvenir book with 18 pages of various Charleston scenes of destruction after the 1886 earthquake.

El Coaching y el Liderazgo en las Organizaciones

Los estudios de liderazgo han abordado la interacción que existe entre el sujeto denominado líder y sus seguidores. Dentro de dicha relación se han estudiado las habilidades del líder y su impacto como coach. Hoy en día se pueden evidenciar un sinnúmero de estudios y aproximaciones en torno al término coaching, concepto, marcos teóricos, modelos, etc… En el presente artículo se hará un proceso investigativo en el que se define coaching desde el punto de vista de varios autores, expertos y managers que se desarrollan en el ámbito empresarial para poder encontrar una definición que comprenda las dimensiones del mundo organizacional, A continuación, se hará una búsqueda sistemática de las definiciones de coaching y a partir de esta búsqueda se propondrá una definición integradora que dé cuenta de los diversos ámbitos del estudio del liderazgo. Al revisar la terminología en cuanto a liderazgo y coaching, junto con su relación directa no hay una definición que realmente abarque todo el tema organizacional que implica estas dos palabras.

Incidencia de síndrome de abstinencia secundario a opioides y/o benzodiacepinas en dos unidades de cuidados intensivos pediátricos

• Introducción: El síndrome de abstinencia (SA) es el conjunto de síntomas y signos que se producen al suspender bruscamente la administración de un fármaco una vez se haya establecido dependencia física. • Objetivos: Caracterizar los pacientes que presentan SA secundario a opiodes (OP) y/o benzodiacepinas(BZ) durante la hospitalización en las unidades de cuidados intensivos pediátricos de la Clínica Infantil Colsubsidio (CIC) y Hospital del Niño de Panamá (HDN) del 1 de abril al 30 de septiembre del 2016. • Materiales y métodos: se realizó un estudio descriptivo, longitudinal, prospectivo. Incluimos 189 pacientes en la CIC y 144 pacientes en el HDN. Se utilizó la escala SOPHIA para el diagnóstico de SA, las escalas COMFORT para evaluar la sedación en pacientes ventilados no relajados y la escala FLACC para evaluar la analgesia. Se utilizó software StataV12® para el análisis estadístico. • Resultados: se reportó una incidencia global de SA de 6.1/100 días personas. La incidencia acumulada de SA fue de 56.08% y 29.86% para la CIC y el HDN respectivamente. En la CIC el 69.81% de los pacientes que requirieron infusión de OP y BZ desarrollaron SA. Se reportó una dosis acumulada de fentanyl de 530.34 ± 276.49 mcg/kg. Con respecto al HDN, de los pacientes que recibieron opioides y benzodiacepinas el 53.49 % desarrollaron SA. • Conclusión: El SA secundario a opioides y/o benzodiacepinas es frecuente en nuestras unidades con una incidencia variable, es mayor la presentación del SA al usar ambos fármacos, mayores dosis acumuladas y más días de infusión continua.