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U W Schaefer

Publications and source records attributed to U W Schaefer.

141 records · Page 8Linked to original sources

[Cryopreservation of hemopoietic stem cells (author's transl)].

The CFU-S potential of mouse bone marrow, the transplantation capacity of autologous and allogeneic monkey bone marrow and the CFU-C potential of human bone marrow can be cryopreserved without loss of viability. It is critical for an optimal stem cell recovery to avoid an osmotic shock after thawing. The intracellular cryoprotectives glycerol and DMSO which provide a high osmotic pressure should be removed from the thawed cells by a slow stepwise dilution procedure.

Animals↗

[The protective effect of hydroxyethylstarch (HES) in the cryoconservation of bone marrow of the mouse and of man (author's transl)].

The cryoprotective effect of hydroxyethylstarch has been tested in mice and in man using the spleen colony technique (CFU-S test) or the agar colony technique (CFU-C test) as viability assays for the haemopoietic stem cell. In mice we found a mean CFU-S recovery of 88.7%+/-3.9% when a rapid, and 77.8%+/-3.2% when a slow, stepwise dilution method was applied to remove the protective medium (17.5-20% hydroxyethylstarch+20% calf serum) after thawing. In man the rapid dilution after thawing gave a mean CFU-C recovery of 80% but a wide scatter.

Agar↗

Prophylaxis and treatment of fungal infections with fluconazole in bone marrow transplant patients.

In an open study 31 patients undergoing bone marrow transplantation for various haematological diseases received fluconazole as prophylaxis or treatment of fungal infections. In 26 of these patients an antecedent oral prophylaxis with polyene antimycotics had failed to prevent infections with Candida species. Five of the 31 patients received fluconazole as primary prophylaxis because of non-compliance for polyene antimycotics. Fluconazole was administered orally at a daily dose of 100 mg and 200 mg, respectively (n = 29), or intravenously at a dose of 100 mg and 400 mg (n = 2). Cure or efficient prophylaxis was achieved in 22/31 patients (71%) after a median of 52 (9 to 493+) treatment days. In three patients (10%) Candida was eradicated but the infection reappeared 14-28 days after cessation of the drug; in 6 patients (20%) the infection was persistent or progressive. Four patients developed lethal Aspergillus infection while on fluconazole medication. A moderate and reversible elevation of liver function tests under therapy was observed in 9 patients and was possibly attributable to fluconazole in three of them (10%). One patient developed tremor which resolved after cessation of fluconazole. No other adverse drug reactions could be noted. We conclude that fluconazole is a relatively safe and effective drug for the prevention and treatment of superficial and, possibly, deep Candida infections in severely immunocompromised patients. However, it is presumably without preventive value in Aspergillus infections.

Adult↗