Kyle D. Staller

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Natural killer (NK) cells are critical in the first-line defense against viral infections. Chronic HIV-1 infection leads to a perturbation in the NK cell compartment, yet the kinetics of this deregulation and the functional consequences are unclear. Here, we characterized changes in the NK cell compartment longitudinally by multiparameter flow cytometry,(More)
BACKGROUND Studies of symptomatic gastroparetics consistently find poor correlation with gastric emptying. We hypothesized that concomitant small bowel dysmotility may play a role in symptom causation in gastroparesis and sought to test this hypothesis by using wireless motility capsule (WMC) testing to simultaneously measure antral and duodenal area under(More)
Emerging evidence suggests a potential impact of gastrointestinal function on cardiometabolic risk. Abnormal bowel movements have been related to various cardiovascular risk factors such as dyslipidemia, hypertension, diabetes, and altered metabolism of bile acids and gut microbiota. However, little is known about whether bowel movement frequency affects(More)
The role of cannabinoids in gastrointestinal diseases is controversial and of great interest, yet their use in patients has not been critically examined. To determine the prevalence and effects of cannabis abuse on healthcare utilization, as measured by emergency department (ED) visits, in a large, tertiary gastroenterology practice. All patients seen in(More)
BACKGROUND AND AIM Elderly, hospitalized patients suffer disproportionately from constipation; however, little data suggest that constipation prophylaxis reduces length of stay (LOS). We performed a retrospective analysis of elderly patients admitted to our hospital with congestive heart failure (CHF) to determine the effects of constipation prophylaxis on(More)
AIM To determine effect of irritable bowel syndrome (IBS) subtype on IBS-specific quality of life (QOL) questionnaire and its subscales. METHODS We studied IBS patients visiting our functional gastroenterology disorder clinic at a tertiary care center of Unites States. IBS and IBS subtype were diagnosed using Rome-III questionnaire. QOL was assessed using(More)
BACKGROUND Although aspirin is recommended for the prevention of colorectal cancer, the specific individuals for whom the benefits outweigh the risks are not clearly defined. Moreover, the precise mechanisms by which aspirin reduces the risk of cancer are unclear. We recently launched the ASPirin Intervention for the REDuction of colorectal cancer risk(More)
GOALS We sought to determine the patient characteristics associated with increased absenteeism and Emergency Department (ED) utilization among patients with constipation. BACKGROUND Chronic constipation is associated with significant direct and indirect economic costs. There has been limited study of the predictors of direct and indirect costs in a(More)
OBJECTIVES Ingestion of radiopaque markers (ROMs) is a common means of assessing colonic transit time in chronic constipation. Because anorectal manometry (ARM) testing for pelvic floor dysfunction is mostly limited to academic centers, clinicians frequently use rectosigmoid accumulation of markers as a surrogate for pelvic floor dysfunction. We sought to(More)