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Biomedical subjects

U Leibundgut

Publications and source records attributed to U Leibundgut.

8 recordsLinked to original sources
PubMed1984

[Orchidectomy only for stage I testicular teratoma?].

In the past few years the therapeutic options for non-seminomatous germ-cell tumors of the testis have evolved rapidly. Until recently it was usual practice with patients in clinical stage I to perform lymphadenectomy or retroperitoneal radiotherapy after orchidectomy. However, for 60-80% of these patients this therapy was not necessary, since they were already cured by orchidectomy alone. With the improvement of clinical staging and the success of modern chemotherapy, it seems to be possible to follow up stage I patients clinically. The various aspects which justify this "wait-and-see" strategy are discussed. Further, the question is discussed whether all patients in clinical stage I may be treated in this way, or whether specific groups at severe risk of metastatic disease at the time of orchidectomy should be excluded.

Castration↗
PubMed1981

[Treatment of severe aplastic anemia].

58 patients with severe aplastic anemia (SAA) were treated and evaluated in a prospective study either by bone marrow transplantation (BMT) or by antilymphocyte globulin (ALG). 19 patients were treated with BMT; 9 are still alive 6 months to 5 years after BMT (47%). 39 patients were treated with ALG; 28 are alive 5 months to 5 years after ALG (72%). 24 of these 28 are self-sustaining and in remission. The results show that treatment with ALG is probably superior to treatment with BMT, and also demonstrate that most patients with SAA have a pool of hematopoietic stem cells able to repopulate the marrow after this type of treatment.

Adolescent↗
PubMed1981

Treatment of severe aplastic anaemia with antilymphocyte globulin or bone-marrow transplantation.

Fifty-three patients with severe aplastic anaemia were admitted to this hospital between January 1976 and June 1980, of whom three arrived in terminal condition and died before treatment for their basic disease could be given. Thus 50 patients were treated and evaluated in a prospective study according to one protocol. Eighteen patients with an HLA-identical sibling underwent bone-marrow transplantation with the aim of achieving haematopoietic chimerism. Thirty-two patients without an HLA-identical sibling were given antilymphocyte globulin with or without an infusion of HLA-haplotype-identical marrow. All these 32 patients received low-dose androgens after the procedure. In the first group eight patients (44%) survived. In the two other groups, 22 patients survived (69%), of whom 20 were completely self-sustaining (63%). Engraftment and graft-versus-host disease did not occur in the group who received antilymphocyte globulin and haploidentical marrow, and the haematopoietic reconstitutions in these patients were all autologous. These results confirm the efficacy of antilymphocyte globulin in the treatment of severe aplastic anaemia and show that such treatment is at least as good as bone-marrow transplantation. Its mechanism of action remains unknown, but most patients with aplastic anaemia have a pool of haematopoietic stem cells able to repopulate the marrow after this type of treatment.

Adolescent↗
PubMedDate not supplied

A skin test for autonomic neuropathy.

Intradermal injection of 0.5 microgram histamine produced equal skin reactions in normal individuals (n = 15) and in diabetic patients with (n = 10) or without (n = 9) evidence of autonomic neuropathy as well as in patients after lumbar sympathectomy (n = 5). Addition of noradrenaline (0.1 microgram) resulted in a significantly smaller skin reaction (mean +/- SEM) in normal (101.9 +/- 10.1 vs. 136.3 +/- 6.5 mm2, p less than 0.005) and in diabetic patients without autonomic neuropathy (101.8 +/- 8.4 vs. 123.9 +/- 8.7 mm2, P less than 0.05), but remained unchanged in diabetic patients with autonomic neuropathy (131.0 +/- 9.0 vs, 130.7 +/- 8.2 mm2, n.s.) and after lumbar sympathectomy (135.2 +/- 17.5 vs 130.2 +/- 19.6 mm2, n.s.) when compared with the reaction to histamine alone. Addition of terbutaline produced similar results as observed with noradrenaline. These findings suggest a defect at the adrenoceptor level in diabetic patients with autonomic neuropathy and in patients with lumbar sympathectomy. Thus, the combined intradermal injection of histamine and the adrenoceptor agonists noradrenaline or terbutaline represents a simple and useful test for identifying patients with impaired adrenergic function.

Adult↗