Beth A. Whalen

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Accelerated granulocytopoiesis and polymorphonuclear leukocyte (PMN) activation via the complement system are important events in the inflammatory response. This study tests the hypothesis that PMN of the peripheral blood and the bone marrow behave differently when stimulated with zymosan-activated plasma (ZAP). PMN were treated with ZAP and processed to(More)
The recruitment of monocytes into the alveolar spaces is crucial for clearing infections and resolving the inflammatory response. We have previously reported the effect of acute pneumonia on monocyte transport through the bone marrow, and the present study concerns their clearance from the blood and migration into the lung airspaces. Dividing monocytes were(More)
Bacterial endotoxin or lipopolysaccharide (LPS) is an important causative agent of sepsis. This study determines the expression of defensins NP-2 and NP-5 and the function of polymorphonuclear leukocytes (PMN) in rabbits treated with LPS. PMN functional activity was assessed by measuring CD18 expression and H(2)O(2) production and by examining the lungs.(More)
The elderly are susceptible to infections and show a decline in neutrophil (PMN) functions that are regulated by cytosolic calcium [Ca2+]i. This study measures [Ca2+]i in suspended and adherent PMN of young and elderly individuals by using flow cytometry, confocal microscopy, the bacterial peptide fMLP, and the fluorescent Ca2+ indicator(More)
Chronic endotoxemia produces emphysematous lung destruction in several animal models. The present study was designed to examine changes in the polymorphonuclear leukocytes (PMN) and the lung parenchyma of rabbits that received either saline (control, n = 6) or Escherichia coli endotoxin (LPS, n = 6) 2-3 times weekly for 15 to 28 weeks. Peripheral blood was(More)
AIM To investigate the influence of maternal corticosteroid administration on neutrophil apoptosis in early onset preeclampsia. METHODS We investigated five groups: early onset preeclampsia (EOPET, <34 weeks, n = 10); late-onset preeclampsia (LOPET, > or =34 weeks, n = 7); normotensive intrauterine growth restriction (nIUGR, n = 11); normal pregnancy(More)
BACKGROUND/AIMS The ideal hemoglobin target in chronic kidney disease remains unknown. Ultimately, individualized targets may depend upon the properties of the patient's endothelial and vascular milieu, and thus the complex relationships between these factors need to be further explored. METHODS Forty-six patients with a glomerular filtration rate (GFR)(More)
BACKGROUND Markers of plaque destabilization and disruption may have a role in identifying non-STE- type 1 Myocardial Infarction in patients presenting with troponin elevation. We hypothesized that a plaque disruption index (PDI) derived from multiple biomarkers and measured within 24 hours from the first detectable troponin in patients with acute non-STE-(More)
Polymorphonuclear neutrophils (PMN) are vital in host defense against microbial infections. This study provides a flow cytometric method for the quantitative analysis of microbicidal peptides (defensins) in cells of PMN lineage. Rabbit neutrophil peptides, NP-2 and NP-5, were measured in all PMN and in subpopulations of PMN expressing 1-selectin. PMN(More)
Inflammation accelerates polymorphonuclear leukocyte (PMN) release from the bone marrow, and these PMNs are implicated in inappropriate tissue injury. We have previously developed a method using 5'-bromo-2'-deoxyuridine (BrdU) to study PMN kinetics using an immunocytochemical grading system of PMN on cytospin slides. The aim of this study was to develop a(More)
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