Jennifer S. Schwartz

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Fear responses can be eliminated through extinction, a procedure involving the presentation of fear-eliciting stimuli without aversive outcomes. Extinction is believed to be mediated by new inhibitory learning that acts to suppress fear expression without erasing the original memory trace. This hypothesis is supported mainly by behavioral data demonstrating(More)
Bacterial transport of many sugars, coupled to their phosphorylation, is carried out by the phosphoenolpyruvate (PEP):sugar phosphotransferase system and involves five phosphoryl group transfer reactions. Sugar translocation initiates with the Mg(2+)-dependent phosphorylation of enzyme I (EI) by PEP. Crystals of Escherichia coli EI were obtained by mixing(More)
Gastrointestinal complications (GIC) in cardio-thoracic surgery (GIC-CTS) constitute a het‐ erogenous group of non-cardiac/thoracic complications. Although relatively infrequent, these complications are associated with significant mortality and severe clinical sequelae. It is also well recognized that GIC-CTS are often difficult to identify clinically [1],(More)
Recognition of the complex, multidimensional relationship between excess adiposity and cancer control outcomes has motivated the scientific community to seek new research models and paradigms. The National Cancer Institute developed an innovative concept to establish a center grant mechanism in nutrition, energetics, and physical activity, referred to as(More)
Peroral endoscopic myotomy (POEM) is an emerging treatment for esophageal achalasia. Postoperative reflux has been found in a significant number of patients, but it is unknown whether subjective reports of reflux correlate with objective pH testing. The purpose of this study was to compare the objective rate of reflux with standardized reflux symptom scales(More)
BACKGROUND AND PURPOSE There are no contemporary national-level data on Emergency Medical Services (EMS) response times for suspected stroke in the United States (US). Because effective stroke treatment is time-dependent, we characterized response times for suspected stroke, and examined whether they met guideline recommendations. METHODS Using the(More)
This study tested the hypothesis that disturbed or very short or long sleep durations are associated with subclinical atherosclerosis, as measured by carotid intima-media thickness (CIMT), in a sample of community-dwelling elderly spousal caregivers. Participants were 126 spousal caregivers of a person with Alzheimer’s disease who underwent in-home sleep(More)
OBJECTIVES To determine whether information on the presence and extent of coronary artery calcium (CAC) is associated with the likelihood of physicians' prescribing preventive therapies. METHOD In a longitudinal design, asymptomatic participants (N=510) were evaluated by computed tomography for CAC. Changes to medications were at the discretion of the(More)
The American Heart Association (AHA) and its division, the American Stroke Association, are dedicated to improving the quality of care available to patients who have or are at risk of acquiring cardiovascular diseases, including stroke. Heart disease, stroke, and other cardiovascular diseases remain the No. 1 killer in the United States and a leading cause(More)
We investigated a cluster of 10 Burkholderia cepacia complex-positive cultures among ventilated patients and those with a tracheostomy in an acute care hospital. Isolates from 5 patients had outbreak-strain-related Burkholderia contaminans. Isolates of B. cepacia complex unrelated to the outbreak strain were cultured from a sink drain. The investigation(More)