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Biomedical subjects

H Sauer

Publications and source records attributed to H Sauer.

At least 325 records · Page 18Linked to original sources
PubMed1982

[Adjuvant chemotherapy of malignant bone tumors].

The interdisciplinary approach in the combined modality treatment of non-metastasized osteogenic sarcoma follows now well-established guidelines: (1) diagnostic biopsy; (2) pretherapeutic cytostatic polychemotherapy (cyclic administration of adriamycin, high-dose methotrexate or cis-platinum, BCD = bleomycin + cyclophosphamide + dactinomycin); (3) limb-saving oncological radical operation with histological evaluation of the effectiveness of the preoperative chemotherapy; (4) continuation of the preoperative chemotherapy as postoperative adjuvant chemotherapy. This interdisciplinary approach in the treatment of localized osteogenic sarcoma has improved the 5-year survival rate from 20% to 80%.

Antineoplastic Agents↗
PubMed1982

Endoscopic esophageal anastomosis.

This paper describes four cases of esophageal atresia without a lower fistula in which a perlon thread was inserted through the two esophageal segments by an endoscopic method. With the aid of the thread and two metal olives the segments were drawn closer together and finally a communication was established without an operation. The method of introducing the thread and the olive technique are demonstrated in a series of drawings, and the results achieved in the case of four children are also presented.

Dilatation↗
PubMed1982

[Extension of the rosette test in the estimation of TAA-binding cells in breast cancer and mastopathy patients].

The antigen specific rosette test was used for the evaluation of a specific sensibilization of a tumour bearer to TAA. The frequency of the rosettes formed by peripheral blood leucocytes of breast carcinoma patients with antigen-coupled particles is significantly higher than that produced by leucocytes of normal donors. Following operation normally the number of TAA specific rosettes decrease, in 4 cases with recidives we found high numbers of TAA binding cells. In another 11/98 patients following ablatio mammae later than half a year we found positive test results and also in 17/60 patients with mastopathy. The clinical relevance of these results must be proofed in further investigations.

Antigens, Neoplasm↗
PubMed1982

[Decrease in the number of SE-rosettes by means of sera containing immune complexes].

The number of peripheral blood lymphocytes (PBL) rosetting with sheep erythrocytes (SE-rosettes) was significantly decreased by preincubation with both sera containing immune complexes (IC) and prepared antigen-antibody complexes. However, this effect of decrease in rosetting ability of PBL could be completely reversed by a second incubation of the cells for 30 minutes at 37 degrees C in IC-free medium. The immune complexes and antigen-antibody complexes respectively could bind reversibly to T cells via Fc-receptors and subsequently interfere with the T cell receptors for SE by steric hindrance.

Animals↗
PubMed1982

Differential effect of high-dose methotrexate on erythropoiesis and granulocytopoiesis in humans.

The kinetics of erythroid and granulocytopoietic cell production were investigated during Courses 1 and 4 of high-dose methotrexate therapy with citrovorum factor rescue in a patient suffering from metastatic osteogenic sarcoma. Using the technique of quantitative 14C autoradiography, relative production rates were determined before, as well as 2, 24, 48, and 72 hr after, methotrexate infusion. There was only a minor decrease of the relative granulopoietic cell production 2 hr after methotrexate infusion followed by an overshoot reaction after 48 hr with a maximum of 3 to 4 times the pretherapeutic value. The relative erythropoietic cell production dropped to less than one-third of the pretherapeutic level during both courses and remained low during the period of postinfusion observation. The results indicate a severe and long-lasting impairment of the erythropoietic cell series, which is likely to include the committed stem cell pool. The impairment of granulocytopoiesis was much smaller and was followed quite soon by a reaction of recovery. The rate of DNA synthesis of individual cells was subnormal in all cell types investigated prior to Course 4 and was hardly affected by the methotrexate. Intracellular accumulation of methotrexate polyglutamates and differences in this pattern of accumulation between the red and white cell series are discussed as one possible explanation in this context.

DNA↗
PubMed1982

[Immunotherapy of burns--animal experiments].

Immunologic changes are a component of the pathophysiology of severe burns. The effect of the burn toxin can be reduced by immunologic mechanism. The antigen elimination by immunologic defense mechanism additionally to the necrectomy was discussed. A significant therapeutic effect after standardised burn in the animal mouse model showed the application of heterologous antibodies against the burn antigen and the specific immunostimulation. The antibody titre and the number of lymphocytes which bind burn toxin were investigated. The animal experimental results show the real chances of the antigen elimination by passive immunisation respectively immunostimulation. Immunosuppressive influence by therapeutic measures must be avoided.

Animals↗
PubMed1981

[Comparative study on the value of selective decontamination of the digestive tract in acute leukemia patients (author's transl)].

A comparative study of infectious morbidity and mortality in neutropenic patients with acute leukemia receiving chemotherapy was undertaken to test the effects of a suppression of endogenous and ambient microorganisms. Patients were allocated to receive [1] oral antibiotics (neomycin, colistin, and nystatin) in conventional ward isolation; [2] no antimicrobial suppression but conventional ward isolation; [3] strict isolation, filtered air, sterilized food and oral antibiotics. Significantly fewer infections with Gram-negative bacilli were seen in patients with strict isolation plus endogenous microbial suppression versus patients receiving selective gut decontamination versus patients without nonabsorbable antibiotics in simple reverse isolation. The death rate from infection was significantly reduced in patients who received antibiotics for gut flora suppression in conventional ward isolation compared with the corresponding control group. In addition, a significant improvement of leukemic remission rate was seen in this group. The protocol for decontamination was well tolerated.

Adolescent↗
PubMed1981

Ferrokinetics after high-dose methotrexate therapy.

After high-dose methotrexate with doses ranging from 2-10 g/m2, ferrokinetics were performed in 11 patients with different tumors. Iron-III-citrate-59Fe was injected at methotrexate serum concentrations ranging between 2.7 x 10(-7) -1.3 x 10(-8) M. With MTX levels greater than or equal to 4.2 x 10(-8) M the plasma iron clearance was always retarded, and the plasma iron turnover was diminished in 5 of 6 patients with levels of 3.1-8.9 x 10(-8) M at the time of the injection. In all cases with MTX concentrations greater than or equal to 5 x 10(-8) M the 59Fe-utilization as the measure of effective erythropoiesis was reduced pathologically below normal range. These results show that the erythropoiesis resumes its normal extent even in case of normal methotrexate clearance only when the methotrexate serum concentrations have fallen down below 5 x 10(-8) and that erythropoiesis is more sensitive against methotrexate toxicity than the granulocytopoiesis.

Carcinoma, Small Cell↗
PubMed1981

[Treatment of Wilms' tumor (author's transl)].

Uniform treatment based on the therapeutic approach of the 1st and 2nd US National Wilms' Tumor Study was decided on in March 1976 by paediatricians, surgeons, urologists and radiotherapists in Austria. Wilms' tumour was diagnosed in 34 children between 1 january 1976 an 29 february 1980 (stage I: n = 11, stage II: n = 8, stage III: n = 8, stage IV: n = 7). Parents of two children refused treatments; both children have since died of metastases. Of the remaining 32 children 29 (90.6%) are alive, 10 for more than 4, 15 for more than 3 and 19 for more than 2 years after diagnosis. 21 children are without need of treatment. Three children have died, one due to postoperative complications, one due to haemorrhagic chickenpox, but free of tumour, and one after insufficient treatment. Two of the five children with a recurrence between 2 1/4 to 15 months after diagnosis had been treated inadequately in the initial phase. The tumour free survival rate in 74.2%. Two children with early occurring or recurrent lung metastases have survived for 53 1/2 and 54 months up to now.

Age Factors↗
PubMed1981

[Nomifensin-induced immune haemolytic anaemias (author's transl)].

Two cases of immune haemolytic anaemia and acute renal failure induced by nomifensine are reported. The two female patients had been under continuous nomifensin therapy because of reactive depressions. In both cases nomifensine had been discontinued and the clinical reactions--immune haemolytic anaemia and acute renal failure--started immediately after they had taken again a capsule of nomifensine. In one case the patient's serum contained a potent antibody which agglutinated her red blood cells in presence of nomifensine in the antiglobulin test.

Acute Kidney Injury↗
PubMed1981

[Bone marrow transplantation for aplastic anaemia (author's transl)].

From March 1975 until May 1980 twelve patients with severe aplastic anemia were grafted with bone marrow from HLA-identical siblings by the Munich Cooperative Group for Bone Marrow Transplantation. Six patients are alive between 10 months and more than 5 years after grafting with normal blood values and marrow. One patient is treated as an out patient for chronic localized graft-versus-host disease (GvHD), five patients are well and without treatment. Six patients have died, one patient with a cerebral hemorrhage the day before transplantation, three patients following rejection of grafts 32, 40 and 55 days after grafting, one patient with severe GvHD 85 days after grafting and one patient, probably with interstitial pneumonia, following cerebral hemorrhage. Three of 6 patients who were conditioned with Cyclophosphamide (CY) only died following rejection of the graft. Two adults who were conditioned with CY and "total lymphoid irradiation" and three children, who wer given unirradiated leukocyte concentrates from the marrow donor after grafting, did not reject their grafts. The results of the Munich-Cooperative Group for Bone Marrow Transplantation are comparable to those of large, specialized centers for bone marrow transplantation, they indicate possibilities of cure of severe aplastic anemia by marrow grafts from HLA-identical siblings. They confirm that better results are obtained with earlier transplantation in the course of the disease.

Adolescent↗
PubMed1981

[Laryngo-tracheo-oesophageal cleft and G-syndrome--interposition of a flap from the sternocleidomastoid muscle (author's transl)].

A 7-month-old dystrophic infant weighing 3.8 kg was investigated endoscopically in relation to recurrent pneumonia. A tracheo-esophageal cleft was demonstrated. The situation was complicated by the coexistence of achalasia of the cardia. There was also hypertelorism and malformation of the urinary tract, so that this would appear to be a case of the G-Syndrome. A Heller's operation with fundoplication and gastrostomy was performed and only after this was the tracheooesophageal cleft closed. A flap of sternomastoid muscle was interposed between the trachea and oesophagus. Stenosis was treated by dilatation.

Abnormalities, Multiple↗
PubMed1981

[Immunological and immunotherapeutic studies on the model of mice following thermic injury ].

A burn toxin, which is discussed as reason of the burn disease by Schoenenberger et al., was isolated from burned skin of mice and the immunological reactions to this antigen were evaluated in burned mice longitudinally at several intervals after the trauma. We determined the specific antibodies against the burn toxin by means of the passive hemagglutination test, the burn toxin binding cells by means of the antigen specific rosette technique and the cell-mediated immunity using the macrophage electrophoretic mobility test (MEM-test). A rise of the burn toxin-specific cells could be observed with maximum at day 4 and a cell-mediated immunity between day 11 and day 13. Antibody titre was on the background about an interval of 3 weeks. Pretreatment with burn toxin or posttraumatic i. p. application of antibodies against burn toxin from rabbits eliminated primary death of mice with lethal burns. No correlation seemed to exist between the effect of treatment with antibodies and the antibody titre in the first days following burns.

Animals↗
PubMed1981

[Immunological investigations of patients after thermic injury (author's transl)].

A burn toxin, which is important for the manifestation of clinical and septical processes during the burn disease, was isolated from burned skin of mice. Using this antigen we have studied the immunological reactions against burn toxin in 10 patients following thermic trauma. We determined the specific antibodies against the burn toxin by means of the passive hemagglutination test, the level of IgM, IgG and IgA in the serum using Mancini-immunodiffusion, the burn toxin binding cells by means of the antigen specific rosette technique and the cell-mediate immunity using the macrophage electrophoretic mobility test (MEM-test). A rise of the burn toxin-specific cells could be observed with maximum at day 4 and a second peak at day 10 and cell mediated immunity between day 10 and day 15. The titer of specific antibodies increased, most following an initial decrease, after day 6, a correlation seemed to exist between this titer and the level of immunoglobulins in the serum.

Antibody Formation↗