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Biomedical subjects

F Hofmeister

Publications and source records attributed to F Hofmeister.

9 recordsLinked to original sources

Reproducible erythroid aplasia caused by mycophenolate mofetil.

Anemia secondary to mycophenolate mofetil (MMF) was recently described in experimental animals. A clinical association between MMF and anemia has been observed, but there are no proven reports. We describe a girl with chronic graft failure who developed erythroid aplasia under immunosuppression with MMF. She showed prompt resolution when MMF was discontinued and a recurrence of this clinical course when MMF was restarted. As re-challenge with a medication is the most definitive approach for showing a direct relationship between the drug and the side effect, this case clearly demonstrates that MMF can cause erythroid aplasia.

Adolescent↗

The interaction of the zone of calcified cartilage and subchondral bone in osteoarthritis.

The zone of calcified cartilage (ZCC) forms an important interface between cartilage and bone for transmitting force, attaching cartilage to bone, and limiting diffusion from bone to the deeper layers of cartilage. The height of the ZCC is a relatively constant percent of articular cartilage and the height is maintained by a balance between progression of the tidemark into the unmineralized cartilage and changing into bone by vascular invasion and bony remodeling. During its formation, the cells that form the ZCC have properties similar to the cells of the growth plate. In the adult, the ZCC becomes quiescent but not inactive. The ZCC may be reactivated in osteoarthritis and may progressively calcify the unmineralized cartilage. This might contribute to cartilage thinning which would increase the concentration of forces across the uncalcified cartilage leading to more damage. Although the subchondral bony plate remodels extensively in osteoarthritis, there is little evidence that a change in the biomechanics of the plate directly initiates the osteoarthritic process in cartilage. However, increased repair by endochondral ossification of vertical cracks in the ZCC that penetrate into the marrow space could contribute to progression via changes in the ZCC.

Animals↗

Cefotaxime desensitization.

We report the successful desensitization to cefotaxime in a patient with severe lumbar osteomyelitis of unknown bacteriology and hypersensitivity to the drug. Desensitization was carried out because of the unknown bacteriology, the favorable response to cefotaxime at that time, and hypersensitivity to other antibiotics. On the first day the patient received 1 mg cefotaxime intravenously. The dose was increased for 13 successive days to 4 g cefotaxime intravenously per day. No allergic reaction occurred during desensitization or within 4 weeks of observation under this therapy. Patients with severe infections of unknown bacteriology might benefit from desensitization if therapy with a second-choice antibiotic is impossible.

Cefotaxime↗

[Morbidity of the donor site of the dorsalis pedis flap].

Detailed information on the dorsalis pedis flap donor-site morbidity is still lacking. In a retrospective analysis, wound-healing, cosmesis, mobility, stability, and thermographic studies of the feet were investigated. The results show a high donor-site morbidity of the dorsalis pedis flap. Indications and alternative methods are discussed.

Adolescent↗