364 research outputs found

    True Love in Westmont

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    Reaching for the Cap and Gown: Progress Toward Success Boston's College Completion Goals for Graduates of the Boston Public Schools

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    A new report, prepared for Mayor Martin J. Walsh and the Success Boston college completion initiative, shows a remarkable increase in both the percentage and the number of Boston Public Schools graduates who complete college within six years. The report also examines college completion for students with Success Boston coaches, a major intervention launched by the Boston Foundation and its partners, including the Boston Public Schools, in 2009. Success Boston, a citywide multi-sector college completion initiative, was launched in 2008 in response to a report that found that only 35% of the BPS Class of 2000 graduates who enrolled in college earned a degree within seven years of graduating high school. The initiative is guided by the Boston Public Schools, the Boston Foundation, UMass Boston, Bunker Hill Community College, and the Boston Private Industry Council, along with dozens of colleges, universities, and nonprofit organizations. Among the initiative's ambitious goals was pushing members of the BPS Class of 2009 to a 52%six-year college completion rate. Today's report, "Reaching for the Cap and Gown: Progress Toward Success Boston's College Completion Goals for Graduates of the Boston Public Schools," finds that the six-year college completion rate of first-year college enrollees from the BPS Class of 2009 was 51.3%--within one percentage point of the 52% goal set in 2008. Equally impressive is the gain in the number of BPS graduates completing college within six years of high school graduation--1,314 from the Class of 2009, compared to 735 from the Class of 2000, the equivalent of a 79% increase. The study also finds that college completion, at 54.7%, is even higher than the goal for students who enrolled in the fall immediately after graduating from high school

    Chemistry And Pharmacological Characterization Of Novel Nitrogen Analogues Of Amop-H-Oh (Sazetidine-A 6-[5-(Azetidin-2-Ylmethoxy)Pyridin-3-Yl]Hex-5-Yn-1- Ol) As α4β2-Nicotinic Acetylcholine Receptor-Selective Partial Agonists

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    In order to advance therapeutic applications of nicotinic ligands, continuing research efforts are being directed toward the identification and characterization of novel nicotinic acetylcholine receptor (nAChR) ligands that are both potent and subtype selective. Herein we report the synthesis and pharmacological evaluation of members of a new series of 3-alkoxy-5- aminopyridine derivatives that display good selectivity for the α4β2-nAChR subtype based on ligand binding and functional evaluations. The most potent ligand in this series, compound 64, showed high radioligand binding affinity and selectivity for rat α4β2-nAChR with a Ki value of 1.2 nM and 4700-fold selectivity for α4β2- over α3β4-nAChR, and ∼100-fold selectivity for functional, high-sensitivity, human α4β2-nAChR over α3β4*-nAChR. In the mouse forced swim test, compound 64 exhibited antidepressant-like effects. Structure-activity relationship (SAR) analyses suggest that the introduction of additional substituents to the amino group present on the pyridine ring of the N-demethylated analogue of compound 17 can provide potent α4β2-nAChR-selective ligands for possible use in treatment of neurological and psychiatric disorders including depression. © 2010 American Chemical Society

    Recent Developments In Novel Antidepressants Targeting α4β2-Nicotinic Acetylcholine Receptors

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    Nicotinic acetylcholine receptors (nAChRs) have been investigated for developing drugs that can potentially treat various central nervous system disorders. Considerable evidence supports the hypothesis that modulation of the cholinergic system through activation and/or desensitization/inactivation of nAChR holds promise for the development of new antidepressants. The introductory portion of this Miniperspective discusses the basic pharmacology that underpins the involvement of α4β2-nAChRs in depression, along with the structural features that are essential to ligand recognition by the α4β2-nAChRs. The remainder of this Miniperspective analyzes reported nicotinic ligands in terms of drug design considerations and their potency and selectivity, with a particular focus on compounds exhibiting antidepressant-like effects in preclinical or clinical studies. This Miniperspective aims to provide an in-depth analysis of the potential for using nicotinic ligands in the treatment of depression, which may hold some promise in addressing an unmet clinical need by providing relief from depressive symptoms in refractory patients

    Enantiopure Cyclopropane-Bearing Pyridyldiazabicyclo[3.3.0]Octanes As Selective α4β2-Nachr Ligands

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    We report the synthesis and characterization of a series of enantiopure 5-cyclopropane-bearing pyridyldiazabicyclo[3.3.0]octanes that display low nanomolar binding affinities and act as functional agonists at α4β2-nicotinic acetylcholine receptor (nAChR) subtype. Structure-activity relationship studies revealed that incorporation of a cyclopropane-containing side chain at the 5-position of the pyridine ring provides ligands with improved subtype selectivity for nAChR β2 subunit-containing nAChR subtypes (β2∗-nAChRs) over α4∗-nAChRs compared to the parent compound 4. Compound 15 exhibited subnanomolar binding affinity for α4β2-and α4β2∗-nAChRs with negligible interaction. Functional assays confirm selectivity for α4β2-nAChRs. Furthermore, using the SmartCube assay system, this ligand showed antidepressant, anxiolytic, and antipsychotic features, while mouse forced-swim assay further confirm the antidepressant-like property of 15

    The Future Station: Sustaining Multidisciplinary, Community-Engaged Research, Teaching and Outreach at the Bonne Bay Marine Station

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    The Bonne Bay Marine Station (BBMS) is a prize asset of Memorial University. It actively contributes to the three University pillars: Research, Teaching and Engagement. Bonne Bay -- a small fjord on the west coast of Newfoundland at the base of the Great Northern Peninsula and in the heart of Gros Morne National Park -- is ecologically unique. It has a very wide number of marine habitats and species, ranging from sub-arctic to temperate. In 1969, because of this, the BBMS was established to take advantage of the exciting opportunities for marine research that it presented; at that time, it carried out research and training in marine biology. In 2003, with funding from the Atlantic Canada Opportunities Agency (ACOA), the province and Memorial University, the new station was transformed into a community-partnered institution with a formal mandate for public outreach. The new BBMS and its mandate were designed to support the development of the local economy, including tourism. As a result, the BBMS now offers a marine ecology field school with multiple courses that run between April and September. In 2011 it attracted almost 11,000 visitors who came to tour the visitors centre

    Metal and Metal Oxide Transformation and Texturing Using Pulsed Fiber Laser

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    Thin films of amorphous vanadium metal were deposited on a glass substrate using the electron beam evaporator, these thin films were then exposed to a focused 1064 nm wavelength nanosecond laser pulses. The laser fluence was selected such that it was below the ablation threshold of the films, x-ray diffraction measurement revealed the formation of an oxide phase of vanadium after the laser exposure. The time of flight-secondary ion mass spectrometry data analysis showed a uniform elemental distribution of the elements on the films, whereas the Rutherford backscattering spectrometry results showed that the concentration of oxygen as a function of the laser fluence was increasing, hinting to the incorporation of the oxygen atoms in the films as the laser fluence increases. UV-Vis-NIR percentage reflectance measurements showed small evolution in the visible part of the spectrum due to laser exposure

    Identification Of Novel α4β2-Nicotinic Acetylcholine Receptor (Nachr) Agonists Based On An Isoxazole Ether Scaffold That Demonstrate Antidepressant-Like Activity

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    There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested. © 2011 American Chemical Society

    Third-Party Effects in Stakeholder Interviews

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    This paper examines the effect of having a third-party scientific expert present in stakeholder interviews. The study was conducted as part of a larger project on stakeholder engagement for natural resource management in the Verde Valley region of Arizona. We employed an experimental design, conducting stakeholder interviews both with and without an identified scientific expert present. Our sample consisted of 12 pairs of interviewees (24 total participants) who we matched based on their occupation, sex, and spatial proximity. For each pair, the scientific expert was present as a third party in one interview and absent in the other. We used a word-based coding strategy to code all interview responses for three known areas of sensitivity among the study population (risk, gatekeeping, and competence). We then performed both quantitative and qualitative analyses to compare responses across the two interview groups. We found that the presence of a scientific expert did not have a statistically significant effect on the mention of sensitive topics among stakeholders. However, our qualitative results show that the presence of a scientific expert had subtle influences on the ways that stakeholders discussed sensitive topics, particularly in placing emphasis on their own credibility and knowledge. Our findings indicate that researchers may be able to pursue collaborative, interdisciplinary research designs with multiple researchers present during interviews without concerns of strongly influencing data elicitation on sensitive topics. However, researchers should be cognizant of the subtle ways in which the presence of a third-party expert may influence the credibility claims and knowledge assertions made by respondents when a third-party expert is present during stakeholder interviews
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