LaKesha Smith

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This article describes the formation of oxygen radicals and their biological effects, especially in relation to lung injury. Various recent experimental data are reviewed. The relationships between hydrostatic effects and permeability effects in producing injury and edema are stressed. Means of prevention and problems related to extrapolation to clinical(More)
BACKGROUND Relapse of melanoma after surgical treatment remains a significant clinical problem in need of novel therapies. Vitamin E succinate (VES) is a promising antitumor micronutrient. We evaluated the effect of VES on melanoma dormancy and angiogenesis. METHODS B16F10 melanoma cells were allografted in mice. The effect of VES on melanoma dormancy was(More)
Oxygen-derived free radicals have been implicated as mediators of pulmonary microvascular injury. In the present study we addressed the question of the role of radicals formed in the lung parenchyma in development of pulmonary edema. Rat lungs were perfused with cell-free solutions with and without addition of colloid. Edema formation was measured as(More)
In a prospective study of 73 patients undergoing hepatodochojejunostomy for benign bile duct stricture who were covered by antibacterial prophylaxis with gentamicin and cephalolothin, bacteria were cultured from bile sampled at operation in 80 per cent of cases. Aerobic organisms were found in 50 cases (82 per cent) and anaerobic organisms in 11 cases (18(More)
Sheep were prepared with a chronic lung lymph fistula and studied unanesthetized following septicemia by infusion of live Escherichia coli 10(9) ml/kg bw or injection of oleic acid 0.05 ml/kg bw. Extravascular lung water (EVTV) was measured with thermal-dye technique and compared to gravimetrically measured lung water (EVWV). Septic sheep had increased(More)
Aging-associated alterations in body composition are accompanied by changes in the endocrine system. We evaluated, in male Brown Norway rats, the effects of aging on body composition and the association with serum levels of leptin, insulin, and testosterone. Body composition was assessed cross-sectionally in male rats (3, 8, 17, and 29 months) by a(More)
The effects of increased hydrostatic pressure on the concentrations of hyaluronan (hyaluronic acid) in lung lymph and serum were investigated in awake sheep with a cannula in the efferent vessel from the caudal mediastinal lymph node. Lung lymph was sampled at base line [left atrial pressure (LAP) 6.5 +/- 1.7 mmHg] and after two increases of LAP to 25.7 +/-(More)
The effect of septicemia on the elimination of hyaluronan (HA) from the lung interstitium was investigated in awake sheep with chronic lung lymph and thoracic duct fistulas. The result was compared with that after elevation of left atrial pressure (LAP). Lymph was sampled before and after a 20-min infusion of Escherichia coli (10(9) bacteria/kg body wt.),(More)
Welding fume contains various metals and pulmonary effects from their inhalation are largely unknown. We have studied the effects of exposure to welding fume in sheep. The animals were exposed to either a bolus dose of welding fume solution or to five weeks daily exposure. Lung physiology parameters were studied and biopsies taken. Magnetopneumography was(More)
Disturbed microvascular integrity is an initial event in the development of respiratory insufficiency following trauma and shock. Increased permeability in the pulmonary microvessels has been demonstrated in both experimental animals and in man. High dose corticosteroids have been used to prevent the development of the permeability lesion and to reduce it(More)