Publications by authors named "Abigail M Brown"

Biomedical sciences PhDs pursue a wide range of careers inside and outside academia. However, there is little data regarding how career interests of PhD students relate to the decision to pursue postdoctoral training or to their eventual career outcomes. Here, we present the career goals and career outcomes of 1452 biomedical sciences PhDs who graduated from Vanderbilt University between 1997 and 2021.

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COVID-19-associated university closures moved classes online and interrupted ongoing research in universities throughout the US. In Vanderbilt University, first year biomedical sciences PhD students were in the middle of their spring semester coursework and in the process of identifying a thesis research lab, while senior students who had already completed the first year were at various stages of their graduate training and were working on their thesis research projects. To learn how the university closure and resulting interruptions impacted our students' learning and well-being, we administered two surveys, one to the first year students and the other to the senior students.

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PhD-trained scientists are essential contributors to the workforce in diverse employment sectors that include academia, industry, government, and nonprofit organizations. Hence, best practices for training the future biomedical workforce are of national concern. Complementing coursework and laboratory research training, many institutions now offer professional training that enables career exploration and develops a broad set of skills critical to various career paths.

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There has been a groundswell of national support for transparent tracking and dissemination of PhD career outcomes. In 2017, individuals from multiple institutions and professional organizations met to create the Unified Career Outcomes Taxonomy (UCOT 2017), a three-tiered taxonomy to help institutions uniformly classify career outcomes of PhD graduates. Early adopters of UCOT 2017, noted ambiguity in some categories of the career taxonomy, raising questions about its consistent application within and across institutions.

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The Broadening Experiences in Scientific Training (BEST) program is an NIH-funded effort testing the impact of career development interventions (e.g. internships, workshops, classes) on biomedical trainees (graduate students and postdoctoral fellows).

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There is a persistent shortage of underrepresented minority (URM) faculty who are involved in basic biomedical research at medical schools. We examined the entire training pathway of potential candidates to identify the points of greatest loss. Using a range of recent national data sources, including the National Science Foundation's Survey of Earned Doctorates and Survey of Doctoral Recipients, we analyzed the demographics of the population of interest, specifically those from URM backgrounds with an interest in biomedical sciences.

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Background: As highlighted in recent reports published by the Physician-Scientist Workforce Working Group at the National Institutes of Health, the percentage of physicians conducting research has declined over the past decade. Various programs have been put in place to support and develop current medical student interest in research to alleviate this shortage, including The Vanderbilt University School of Medicine Medical Scholars Program (MSP). This report outlines the long-term program goals and short-term outcomes on career development of MSP alumni, to shed light on the effectiveness of research training programs during undergraduate medical training to inform similar programs in the United States.

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Many biomedical PhD trainees lack exposure to business principles, which limits their competitiveness and effectiveness in academic and industry careers. To fill this training gap, we developed Business and Management Principles for Scientists, a semester-long program that combined didactic exposure to business fundamentals with practical team-based projects aimed at solving real business problems encountered by institutional shared--resource core facilities. The program also included a retreat featuring presentations by and networking with local life science entrepreneurs and final team presentations to expert judges.

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Historically, admissions committees for biomedical Ph.D. programs have heavily weighed GRE scores when considering applications for admission.

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Asian American families are disproportionately affected by Hepatitis B (HBV) infection. We aimed to assess the extent of screening family members of Asian patients with known HBV infection as well as patients' knowledge of HBV disease. A cross-sectional survey of established Asian patients with HBV-infection was performed at a university liver clinic.

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Distinct physiological stimuli are required for bidirectional synaptic plasticity in striatum and hippocampus, but differences in the underlying signaling mechanisms are poorly understood. We have begun to compare levels and interactions of key excitatory synaptic proteins in whole extracts and subcellular fractions isolated from micro-dissected striatum and hippocampus. Levels of multiple glutamate receptor subunits, calcium/calmodulin-dependent protein kinase II (CaMKII), a highly abundant serine/threonine kinase, and spinophilin, a F-actin and protein phosphatase 1 (PP1) binding protein, were significantly lower in striatal extracts, as well as in synaptic and/or extrasynaptic fractions, compared with similar hippocampal extracts/fractions.

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Purpose: In 2000, faced with a national concern over the decreasing number of physician-scientists, Vanderbilt School of Medicine established the institutionally funded Vanderbilt Physician-Scientist Development (VPSD) program to provide centralized oversight and financial support for physician-scientist career development. In 2002, Vanderbilt developed the National Institutes of Health (NIH)-funded Vanderbilt Clinical Research Scholars (VCRS) program using a similar model of centralized oversight. The authors evaluate the impact of the VPSD and VCRS programs on early career outcomes of physician-scientists.

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Sustained nigrostriatal dopamine depletion increases the serine/threonine phosphorylation of multiple striatal proteins that play a role in corticostriatal synaptic plasticity, including Thr(286) phosphorylation of calcium/calmodulin-dependent protein kinase IIalpha (CaMKIIalpha). Mechanisms underlying these changes are unclear, but protein phosphatases play a critical role in the acute modulation of striatal protein phosphorylation. Here we show that dopamine depletion for periods ranging from 3 weeks to 10 months significantly reduces the total activity of protein phosphatase (PP) 1, but not of PP2A, in whole lysates of rat striatum, as measured using multiple substrates, including Thr(286)-autophosphorylated CaMKIIalpha.

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Nigrostriatal dopamine depletion disrupts striatal medium spiny neuron morphology in Parkinson's disease and modulates striatal synaptic plasticity in animal models of parkinsonism. We demonstrate that long-term nigrostriatal dopamine depletion in the rat induces evolving changes in the phosphorylation of striatal proteins critical for synaptic plasticity. Dopamine depletion increased the phosphorylation of the alpha isoform of calcium-calmodulin-dependent protein kinase II (CaMKIIalpha) at Thr286, a site associated with enhanced autonomous kinase activity, but did not alter total levels of CaMKIIalpha or other synaptic proteins.

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A prominent role for calcium/calmodulin-dependent protein kinase II (CaMKII) in regulation of excitatory synaptic transmission was proposed two decades ago when it was identified as a major postsynaptic density protein. Since then, fascinating mechanisms optimized to fine-tune the magnitude and locations of CaMKII activity have been revealed. The importance of CaMKII activity and autophosphorylation to synaptic plasticity in vitro, and to a variety of learning and memory paradigms in vivo has been demonstrated.

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