Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Mark A. Hartsky"'
Publikováno v:
Experimental Lung Research. 28:641-670
Apoptosis, or programmed cell death, has been reported to play an important role in the resolution of pulmonary inflammation. This study was undertaken to investigate the role of apoptosis in resolving particle-induced lung inflammatory responses in
Publikováno v:
Environmental Health Perspectives
This study compared pulmonary effects of para-aramid respirable-sized, fiber-shaped particles (RFP) (p-aramid fibrils) and chrysotile asbestos fiber exposures in rats. Additional p-aramid inhalation studies were conducted in hamsters to compare speci
Publikováno v:
Toxicology Letters. 88:287-292
This study was designed to compare the pulmonary cellular proliferative effects of inhaled, size-separated preparations of chrysotile asbestos fibres with similar aerosol fibre concentrations of para-aramid fibrils. Following fibre preparation, rats
Publikováno v:
Toxicology Letters. 88:249-253
Long-term inhalation exposures to high dust burdens can produce tumors or proliferative keratin cysts in the lungs of exposed rats. We hypothesized that dust burdens which overwhelm lung clearance mechanisms are associated with sustained cellular pro
Publikováno v:
American Journal of Respiratory Cell and Molecular Biology. 15:268-274
The time course of neutrophil recruitment into the lung, neutrophilic chemotactic activity, and the gene expression of neutrophilic chemokines by lavaged cells was determined after intratracheal instillation of various particles. Low-toxicity, low-so
Publikováno v:
Environmental Health Perspectives
Fiber dimension and durability are recognized as important features in influencing the development of pulmonary carcinogenic and fibrogenic effects. Using a short-term inhalation bioassay, we have studied pulmonary deposition and clearance patterns a
Autor:
Mark A. Hartsky, David B. Warheit
Publikováno v:
Microscopy Research and Technique. 26:412-422
Alveolar macrophages (AM) play an important role in clearing inhaled particles from the lung. The mechanisms through which macrophages identify particles that have been deposited in the alveolar regions is not well understood, although macrophage mot
Publikováno v:
Environmental Research. 56:186-203
Complement-mediated mechanisms are known to play a role in pulmonary inflammation and clearance responses to some types of inhaled particles. The present studies were undertaken to investigate the role of complement in mediating pulmonary inflammatio
Publikováno v:
Fundamental and Applied Toxicology. 16:590-601
This study was designed to complement a traditional subchronic inhalation toxicity study with Ludox colloidal silica. CD rats were exposed nose-only for 2 or 4 weeks at concentrations of 0, 10, 50, and 150 mg/m3 Ludox (dried SiO2). Additional groups
Publikováno v:
Toxicology and Applied Pharmacology. 107:350-368
This paper describes a short-term inhalation bioassay for evaluating the lung toxicity of inhaled particulate materials. To validate the method, rats were exposed for 6 hr or 3 days to various concentrations of either aerosolized alpha-quartz silica