Publications by authors named "S S Spencer"

Background: Children presenting to the pediatric emergency department (PED) with neurologic dysfunction require prompt evaluation. Many PEDs successfully implement stroke alerts. However, most pediatric patients presenting with neurologic dysfunction have a non-stroke diagnosis better evaluated using magnetic resonance imaging (MRI).

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CDK7 regulates RNA polymerase II (RNAPII) initiation, elongation, and termination through incompletely understood mechanisms. Because contaminating kinases precluded CDK7 analysis with nuclear extracts, we completed biochemical assays with purified factors. Reconstitution of RNAPII transcription initiation showed CDK7 inhibition slowed and/or paused RNAPII promoter-proximal transcription, which reduced re-initiation.

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The mitogen-activated protein kinase (MAPK) pathway integrates growth factor signaling through extracellular signal-regulated kinase (ERK) to control cell proliferation. To study ERK dynamics, many researchers use an ERK activity kinase translocation reporter (KTR). Our study reveals that this ERK KTR also partially senses cyclin-dependent kinase 2 (CDK2) activity, making it appear as if ERK activity rises as cells progress through the cell cycle.

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Targeted kinase inhibitors are well known for their promiscuity and off-target effects. Herein, we define an off-target effect in which several clinical BRAF inhibitors, including the widely used dabrafenib and encorafenib, interact directly with GCN2 to activate the Integrated Stress Response and ATF4. Blocking this off-target effect by co-drugging with a GCN2 inhibitor in A375 melanoma cells causes enhancement rather than suppression of cancer cell outgrowth, suggesting that the off-target activation of GCN2 is detrimental to these cells.

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Background: Prior research has shown that African American men and women are more likely to receive lower quality healthcare compared to their white counterparts, which is exacerbated in jail and prison healthcare systems.

Objective: The purpose of this study is to explore barriers and facilitators to quality healthcare among African American men and women released from Illinois State Prisons or Cook County Jail by examining their opinions and experiences with overall healthcare and cancer screening during and after incarceration.

Design: Four focus groups (n = 25 "co-researchers") were conducted to understand how formerly incarcerated African American men and women perceive and describe their experience of accessing, understanding, and utilizing healthcare during and after incarceration.

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