Glen Lehnert

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The erythrocyte delta-aminolevulinate dehydratase (ALAD) isozyme phenotypes and the blood lead levels were determined in a population of 202 lead factory workers in Germany and an environmentally exposed population of 1278 children in New York who had elevated free protoporphyrin levels. In both population, individuals with the ALAD 1-2 or 2-2 isozyme(More)
The activity of O6-methylguanine-DNA methyltransferase was determined in fibroblast cultures from 45 patients with lung cancer, 39 patients with cutaneous malignant melanoma, and 29 healthy controls. This enzyme is a critical parameter for the capacity to repair O6-methylguanine (O6-mGua) adducts in DNA, and a decreased activity might therefore be(More)
In order to assess the uptake of benzene from environmental tobacco smoke (ETS) and to estimate its contribution to the total body burden of benzene observed in non-smokers, two experimental studies have been conducted. Controlled exposure to high levels of ETS equivalent to 10 ppm CO for 9 h and 20 ppm for 8 h resulted in a nonsignificant increase in blood(More)
Acknowledgments First of all I would like to thank Prof. Dr. Bernd Neumann. His encouraging comments and enthusiasm over the years shaped the whole work discussed in this monograph. Always emphasizing the importance of applications to demonstrate the adequacy of theoretical work, he suggested to particularly consider real-world problems. Thus, it is also(More)
A 41-year-old man was referred to the outpatient clinic of our respiratory care department presenting with the symptoms of progressive cough, exertional dyspnea and tachycardia. The symptoms had started about 18 months earlier and had worsened continuously during the past year. At presentation the patient complained of dyspnea at the slightest exertion. An(More)