Zobrazeno 1 - 10
of 188
pro vyhledávání: '"N.H. Seemayer"'
Publikováno v:
Toxicology in Vitro. 11:711-715
In our highly industrialized world air pollution has become an important topic. Beside gaseous pollutants airborne particulates are of great medical concern, containing several hundred mostly organic substances. They are incriminated to cause an exce
Autor:
Kari Hemminki, N.H. Seemayer, Mieczystaw Chorazy, Regina M. Santella, Frederica P. Perera, Grazyna Motykiewicz
Publikováno v:
Toxicology Letters. 88:169-173
New concepts of cancer risk estimation have been developed during the past decade. Short-term bioassays dealing with mutagenicity and carcinogenicity of environmental samples are being replaced by more relevant molecular epidemiology studies. The gen
Publikováno v:
Toxicology Letters. 88:55-64
Tracheal epithelial cells of the golden Syrian hamster can be successfully cultivated in vitro and applied as a model system of respiratory tract epithelium. By morphology and growth characteristics of tracheal epithelial cells, "normal cells", "enha
Autor:
U. Griwatz, N.H. Seemayer
Publikováno v:
Toxicology in Vitro. 9:403-409
Recent results indicate that tumour necrosis factor alpha (TNFalpha) may have an important role in the pathogenesis of silicosis. Supernatants of macrophages exposed to quartz and coal mine dust were tested for the presence of TNFalpha. Monocytes wer
Autor:
N.H. Seemayer, C. Hornberg
Publikováno v:
Toxicology in Vitro. 9:397-402
The major target site of airborne particulates is the tracheobronchial epithelium of the respiratory tract. It is also the origin of the most common cancer in man, bronchogenic carcinoma. Rodent tracheal epithelial cells in culture can be used to stu
Autor:
N.H. Seemayer, Wolfgang Hadnagy
Publikováno v:
Toxicology Letters. 72:23-31
Human monocyte-derived macrophages isolated from peripheral blood were treated with different extracts of airborne particulates collected in the highly industrialized Rhine-Ruhr area. All tested extracts showed a substantial impairment of phagocytosi
Publikováno v:
Toxicology in Vitro. 7:365-371
Alveolar macrophages are major target cells for toxicity from inhaled particulates. To investigate pulmonary toxicity induced by airborne particulates a phagocytosis assay using human monocyte-derived macrophage cultures was used. Monocytes were isol
Autor:
W. Hadnagy, N.H. Seemayer
Publikováno v:
Toxicology in vitro : an international journal published in association with BIBRA. 5(5-6)
The ability of particulate pollutants to act on the mitotic cell division process and to induce aneuploidy in V79 cell cultures has been investigated. Extracts of airborne particulates and particulate car exhaust caused mitotic arrest connected with
Publikováno v:
Toxicology in vitro : an international journal published in association with BIBRA. 11(5)
A complex chemical mixture of heavy oil (Z1003), composed of polycyclic aromatic hydrocarbons (PAHs) and aza-heterocyclic compounds (AHCs), has been analysed for its ability to induce cell division disturbances on Chinese hamster lung cell line V79.
Publikováno v:
Journal of Aerosol Science. 21:387-391
In this study we report the effect of extract of airborne particulates collected in the Rhine-Ruhr region on alveolar macrophages of the rat and on human macrophages in culture