1,690 research outputs found

    Amphetamine-evoked gene expression in striatopallidal neurons: regulation by corticostriatal afferents and the ERK/MAPK signaling cascade

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    The environmental context in which psychostimulant drugs are experienced influences their ability to induce immediate early genes (IEGs) in the striatum. When given in the home cage amphetamine induces IEGs predominately in striatonigral neurons, but when given in a novel test environment amphetamine also induces IEGs in striatopallidal neurons. The source of the striatopetal projections that regulate the ability of amphetamine to differentially engage these two striatofugal circuits has never been described. We report that transection of corticostriatal afferents selectively blocks, whereas enhancement of cortical activity with an ampakine selectively augments, the number of amphetamine-evoked c- fos -positive striatopallidal (but not striatonigral) neurons. In addition, blockade of the extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MAPK) signaling cascade preferentially inhibits the number of amphetamine-evoked c- fos -positive striatopallidal neurons. These results suggest that glutamate released from corticostriatal afferents modulates the ability of amphetamine to engage striatopallidal neurons through an ERK/MAPK signaling-dependent mechanism. We speculate that this may be one mechanism by which environmental context facilitates some forms of drug experience-dependent plasticity, such as psychomotor sensitization.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66343/1/j.1471-4159.2004.02712.x.pd

    Identifying temporal variation in reported births, deaths and movements of cattle in Britain

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    BACKGROUND: The accuracy of predicting disease occurrence using epidemic models relies on an understanding of the system or population under investigation. At the time of the Foot and Mouth disease (FMD) outbreak of 2001, there were limited reports in the literature as to the cattle population structure in Britain. In this paper we examine the temporal patterns of cattle births, deaths, imports and movements occurring within Britain, reported to the Department for the Environment, Food and Rural Affairs (DEFRA) through the British Cattle Movement service (BCMS) during the period 1(st )January 2002 to 28(th )February 2005. RESULTS: In Britain, the number of reported cattle births exhibit strong seasonality characterised by a large spring peak followed by a smaller autumn peak. Other event types also exhibit strong seasonal trends; both the reported number of cattle slaughtered and "on-farm" cattle deaths increase during the final part of the year. After allowing for seasonal components by smoothing the data, we illustrate that there is very little remaining non-seasonal trend in the number of cattle births, "on-farm" deaths, slaughterhouse deaths, on- and off-movements. However after allowing for seasonal fluctuations the number of cattle imports has been decreasing since 2002. Reporting of movements, births and deaths was more frequent on certain days of the week. For instance, greater numbers of cattle were slaughtered on Tuesdays, Wednesdays and Thursdays. Evidence for digit preference was found in the reporting of births and "on-farm" deaths with particular bias towards over reporting on the 1(st), 10(th )and 20(th )of each month. CONCLUSION: This study provides insight into the population and movement dynamics of the British cattle population. Although the population is in constant flux, seasonal and long term trends can be identified in the number of reported births, deaths and movements of cattle. Incorporating this temporal variation in epidemic disease modelling may result in more accurate model predictions and may usefully inform future surveillance strategies

    The Freedom to Marry for Same-Sex Couples: The Opening Appellate Brief of Plaintiffs Stan Baker Et Al. In \u3cem\u3eBaker Et Al. V. State of Vermont\u3c/em\u3e

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    As the first state to prohibit slavery by constitution, and one of the few states which, from its inception, extended the vote to male citizens who did not own land, the State of Vermont has long been at the forefront of this nation\u27s march toward full equality for all of its citizens. In July 1997, three same-sex couples challenged Vermont to act as a leader yet again, this time in affording full civil rights to the State\u27s gay and lesbian citizens. Stan Baker and Peter Harrigan, Nina Beck and Stacy Jolles, and Holly Puterbaugh and Lois Farnham were denied marriage licenses by their respective town clerks in the summer of 1997. They sued the State of Vermont and the towns, arguing that the marriage statutes allowed them to marry, and that if the law did purport to limit marriage to different sex unions it would be unconstitutional. The trial court dismissed their claims in December 1997, and the couples appealed to the Vermont Supreme Court. The court heard oral arguments on the case on November 18, 1998

    The Freedom to Marry for Same-Sex Couples: The Opening Appellate Brief of Plaintiffs Stan Baker Et Al. In \u3cem\u3eBaker Et Al. V. State of Vermont\u3c/em\u3e

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    As the first state to prohibit slavery by constitution, and one of the few states which, from its inception, extended the vote to male citizens who did not own land, the State of Vermont has long been at the forefront of this nation\u27s march toward full equality for all of its citizens. In July 1997, three same-sex couples challenged Vermont to act as a leader yet again, this time in affording full civil rights to the State\u27s gay and lesbian citizens. Stan Baker and Peter Harrigan, Nina Beck and Stacy Jolles, and Holly Puterbaugh and Lois Farnham were denied marriage licenses by their respective town clerks in the summer of 1997. They sued the State of Vermont and the towns, arguing that the marriage statutes allowed them to marry, and that if the law did purport to limit marriage to different sex unions it would be unconstitutional. The trial court dismissed their claims in December 1997, and the couples appealed to the Vermont Supreme Court. The court heard oral arguments on the case on November 18, 1998

    The Freedom to Marry for Same-Sex Couples: The Opening Appellate Brief of Plaintiffs Stan Baker Et Al. In \u3cem\u3eBaker Et Al. V. State of Vermont\u3c/em\u3e

    Get PDF
    As the first state to prohibit slavery by constitution, and one of the few states which, from its inception, extended the vote to male citizens who did not own land, the State of Vermont has long been at the forefront of this nation\u27s march toward full equality for all of its citizens. In July 1997, three same-sex couples challenged Vermont to act as a leader yet again, this time in affording full civil rights to the State\u27s gay and lesbian citizens. Stan Baker and Peter Harrigan, Nina Beck and Stacy Jolles, and Holly Puterbaugh and Lois Farnham were denied marriage licenses by their respective town clerks in the summer of 1997. They sued the State of Vermont and the towns, arguing that the marriage statutes allowed them to marry, and that if the law did purport to limit marriage to different sex unions it would be unconstitutional. The trial court dismissed their claims in December 1997, and the couples appealed to the Vermont Supreme Court. The court heard oral arguments on the case on November 18, 1998

    Comparing hospital and telephone follow-up after treatment for breast cancer: randomised equivalence trial

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    Objective To compare traditional hospital follow-up with telephone follow-up by specialist nurses after treatment for breast cancer. Design A two centre randomised equivalence trial in which women remained in the study for a mean of 24 months. Setting Outpatient clinics in two NHS hospital trusts in the north west of England Participants 374 women treated for breast cancer who were at low to moderate risk of recurrence. Interventions Participants were randomised to traditional hospital follow-up (consultation, clinical examination, and mammography as per hospital policy) or telephone follow-up by specialist nurses (consultation with structured intervention and mammography according to hospital policy). Main outcome measures Psychological morbidity (state-trait anxiety inventory, general health questionnaire (GHQ-12)), participants’ needs for information, participants’ satisfaction, clinical investigations ordered, and time to detection of recurrent disease. Results The 95% confidence interval for difference in mean state-trait scores adjusted for treatment received (−3.33 to 2.07) was within the predefined equivalence region (−3.5 to 3.5). The women in the telephone group were no more anxious as a result of foregoing clinic examinations and face-to-face consultations and reported higher levels of satisfaction than those attending hospital clinics (intention to treat P<0.001). The numbers of clinical investigations ordered did not differ between groups. Recurrences were few (4.5%), with no differences between groups for time to detection (median 60.5 (range 37-131) days in hospital group v 39.0 (10-152) days in telephone group; P=0.228). Conclusions Telephone follow-up was well received by participants, with no physical or psychological disadvantage. It is suitable for women at low to moderate risk of recurrence and those with long travelling distances or mobility problems and decreases the burden on busy hospital clinics

    International Space Station Utilization: Tracking Investigations from Objectives to Results

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    Since the first module was assembled on the International Space Station (ISS), on-orbit investigations have been underway across all scientific disciplines. The facilities dedicated to research on ISS have supported over 1100 investigations from over 900 scientists representing over 60 countries. Relatively few of these investigations are tracked through the traditional NASA grants monitoring process and with ISS National Laboratory use growing, the ISS Program Scientist s Office has been tasked with tracking all ISS investigations from objectives to results. Detailed information regarding each investigation is now collected once, at the first point it is proposed for flight, and is kept in an online database that serves as a single source of information on the core objectives of each investigation. Different fields are used to provide the appropriate level of detail for research planning, astronaut training, and public communications. http://www.nasa.gov/iss-science/. With each successive year, publications of ISS scientific results, which are used to measure success of the research program, have shown steady increases in all scientific research areas on the ISS. Accurately identifying, collecting, and assessing the research results publications is a challenge and a priority for the ISS research program, and we will discuss the approaches that the ISS Program Science Office employs to meet this challenge. We will also address the online resources available to support outreach and communication of ISS research to the public. Keywords: International Space Station, Database, Tracking, Method

    Improving landscape or recreating the picturesque?

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    Maintaining and restoring historic landscapes requires attention to native vegetation, cultural artefacts, historic buildings, hedges, stone walls and riparian woodland. One United Kingdom National Lottery scheme, which was launched in 1994, funds preservation of ‘heritage landscapes’. This paper examines the Lottery’s contribution to landscape restoration and rural development. It considers different scales at which restoration is occurring, focusing on three examples. The Leasowes estate is a small yet important example of a landscape garden in the eighteenth-century ‘picturesque’ taste. Croome Park, a National Trust property, boasts 270 hectares of parkland and a neo-Palladian mansion. The 105 sq km of the Malvern Hills is a human-created landscape traceable to prehistory, with landscape features dependent on longstanding grazing practices now threatened by changing farm economics. The article highlights different management approaches as it debates issues affecting landscape restoration and heritage management. Resolving tensions between official policy and cultural values within the community offer directions for further research.Au Royaume-Uni, le système de loterie du patrimoine finance la maintenance et la restauration des paysages patrimoniaux, en particulier la végétation indigène, les biens culturels, les bâtiments historiques, les haies, les murs de pierre et les forêts riveraines. Cet article étudie la contribution de ce type de financement à la restauration du paysage et au développement rural. Il examine les différentes échelles de restauration à partir de trois exemples du centre de l’Angleterre : le domaine de ‘Leasowes’, un petit jardin paysager dans le goût pittoresque du XVIIIe siècle, ‘Croome Park’, une propriété du ‘National Trust’ composée d'un parc de 270 ha et d'un manoir néo-palladien, et enfin ‘Malvern Hills’, une étendue de 105 km2 datant de la préhistoire et dont les caractéristiques paysagères dépendent de pratiques de pâturage ancestrales menacées par l'évolution de l'économie agricole. L’article met en avant les différentes approches liées à la gestion du patrimoine ainsi que les problèmes associés à la restauration des paysages et à la gestion du patrimoine. La résolution des tensions entre les stratégies officielles et les valeurs culturelles au sein de la communauté offre diverses orientations pour la poursuite de la recherche
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