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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 85 (1993), S. 863-867 
    ISSN: 1432-2242
    Keywords: Potato ; PYX ; PVY ; Protoplasts ; Somatic hybrids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Dihaploid genotypes of potato, containing the dominant allele for extreme resistance to PVX and/or PVY, were used in a fusion program in order to analyze the behaviour of the two monogenetic resistances after fusion. Eighteen different fusion combinations were performed and regenerated hybrids were tested by ELISA for their virus resistance. In most of the combinations an addition of the two qualities was found, but a few deviating clones were observed. The possible reasons for the phenotypic disappearance of resistant alleles are discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2277
    Keywords: Key words Combined liver-kidney transplantation ; Positive crossmatch ; Lymphocytotoxic antibodies ; Long-term follow up
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since August 1992, 18 patients underwent combined liver and kidney transplantation. Eight patients had lymphocytotoxic antibodies pretransplant and 5 of these patients (27.7%) had a positive crossmatch. Fifteen patients received cyclosporine-based immunosuppression and 3 patients were treated with a tacrolimus-based immunosuppressive protocol. One patient died in the postoperative course due to intractable bleeding episodes after 96 days and one kidney graft was lost due to technical complications. The 1-year survival rate of patients with combined transplantation was 95% vs 87% in patients with liver transplantation alone. None of the patients with a positive crossmatch experienced a hyperacute rejection of the kidney. The long-term patient and graft survival was not impaired in patients with a positive crossmatch. These results suggest that combined liver-kidney transplantation is a safe treatment for end-stage liver and renal disease. A positive crossmatch or positive lymphocytotoxic antibodies are not contraindications for a combined transplantation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 70 (1992), S. S120 
    ISSN: 1432-1440
    Keywords: Hypertension ; Kidney ; Antihypertensive drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antihypertensive therapy influences kidney function by different mechanisms depending on the mode of action of the drug used. The GFR is improved by calcium entry blockers and ACE inhibitors, unaffected by vasodilators, α-blockers and centrally acting sympatholytics and impaired by β-blockers. The same is true for renal blood flow and is due to changes of renal vascular resistance. Renal sodium excretion is impaired mostly by vasodilators, by α-blockers, sympatholytics and β-blockers; in contrast, calcium entry blockers and ACE inhibitors acutely induce natriuresis. The RAAS is stimulated by vasodilators, unaffected by α-blockers and sympatholytics and suppressed by β-blockers. Plasma catecholamines are stimulated by vasodilators and suppressed by centrally acting sympatholytics and unaffected by the others. Induction of acute renal functional impairment is reported for ACE inhibitors under conditions of compromised renal perfusion pressure such as in renal artery stenosis. These data from the literature reviewed are supported by our own experimental data on sodium balance under different drugs and micropuncture data in experimental renal artery stenosis. To achieve effective antihypertensive treatment with a low profile of side effects, careful monitoring of renal function seems to be mandatory.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 57 (1979), S. 673-679 
    ISSN: 1432-1440
    Keywords: Formaldehyd ; Anti-N-artige Antikörper ; Immunhämolyse ; Hämodialyse ; renale Anämie ; Formaldehyde ; Anti-N-like antibodies ; Immunohaemolysis ; Haemodialysis ; Renal anaemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary During reuse of formaldehyde sterilized Kiil-dialysers, red cell survival, measured by means of51Cr t/2, was significantly reduced (p〈0.001) in 16 patients with anti-N-like positive sera, when compared with 19 antibody negative control patients (Mean±SD: 16.5±2.7 versus 22.4±3.1 days.) In antibody negative patients (n=10) replacement of form-aldehyde sterilized dialysers by ethylene-oxide sterilized disposable dialysers resulted in a significant increase (p〈0.002) of51Cr t/2 (Mean±SD, days: Kiil-dialyser 16.3±1.9; disposable dialyser 20.3±3.5). This improvement took place, although antibody titres persisted during the51Cr-measurements and declined thereafter only slowly. In antibody negative patients (n=6) red cell survival did not increase, when formaldehyde as a sterilant was avoided. In antibody positive patients mean haematocrit rose significantly (p〈0.05), whereas in none of the antibody negative patients a definite change of haematocrit occurred. The data demonstrate, that formaldehyde sterilisation of dialysers may cause antibody-mediated haemolysis contributing to the extent of renal anaemia. This immunohaemolysis may be corrected, in spite of continuing antibody persistance, when formaldehyde exposure is totally avoided, or possibly when minimized.
    Notes: Zusammenfassung Während der Wiederverwendung Formaldehyd-sterilisierter Kiil-Dialysatoren war die mit51Cr bestimmte Erythrocytenüberlebenszeit bei 16 Patienten mit Anti-N-artigen Antikörpern significant (p〈0,001) kürzer als bei 19 Antikörper-negativen Kontrollpatienten (MW±SD: 16,5±2,7 bzw. 22,4±3,1 Tage). Bei Antikörper-positiven Patienten (n=10) führte das Umsetzen von Formaldehyd-sterilisierten Kiil-Dialysatoren auf Ethylenoxid-sterilisierte Einmaldialysatoren vergleichbarer Effektivität zu einem sofortigen, signifikanten (p〈0,002) Anstieg der Erythrocytenüberlebenszeit (MW±SD: 16,3±1,9 Tage, Kiil-Dialysator; 20,3±3,5 Tage Einmaldialysator). Die Antikörper-Titer blieben während der Messung der Erythrocytenüberlebenszeit unverändert, danach fielen sie im Verlauf von Monaten langsam ab. Bei Antikörper-negativen Kontrollpatienten (n=6) führte das Umsetzen von Formaldehyd-sterilisierten Kiil-Dialysatoren auf die Ethylenoxid-sterilisierten Einmaldialysatoren nicht zum Anstieg der Erythrocytenüberlebenszeit. Bei den Antikörper-positiven Patienten stieg der mittlere Hämatokritwert nach dem Umsetzen signifikant (p〈0,05) an, dagegen kam es nach dem Umsetzen bei keinem der Antikörper-negativen Patienten zu einer gerichteten Veränderung der Hämatokritwerte. Die Untersuchungen belegen, daß die Formaldehyd-Sterilisation von Dialysatoren zu einer Antikörper-vermittelten Hämolyse führen kann, die zum Ausmaß der renalen Anämie dieser Patienten beiträgt. Diese Immunhämolyse kann, auch bei Persistenz der Anti-N-artigen Antikörper, zumindest teilweise verhindert werden, wenn eine weitere Formaldehyd-Exposition des Patienten vermieden wird.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Transplant international 3 (1990), S. 113-115 
    ISSN: 1432-2277
    Keywords: Tuberculosis ; in renal transplantation — Renal transplantation ; tuberculosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Disseminated mycobacterial infections occurred in two female renal graft recipients late after transplantation. In the first patient, initially presenting with fever, diagnosis was made at autopsy. Temporary defervescence following antibiotic therapy with ofloxacin possibly contributed to the fatal diagnostic delay. In the second case, body temperature was normal throughout the protracted course of the patient's illness. Her presenting symptom was rapidly increasing ascites, attributed initially to chronic liver disease. These cases demonstrate that tuberculosis remains a serious complication after renal transplantation, in particular due to its sometimes atypical clinical manifestations. Response to antibacterial therapy has to be critically evaluated in order to avoid fatal diagnostic delay.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1238
    Keywords: Key words Hypoxia ; Ischemia ; Acute phase proteins ; Cardiac arrest ; Infections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: Inflammation and hypoxia are frequently associated, but their interaction is poorly understood. In vitro studies have shown that hypoxia stimulates the genes of acute phase proteins (APP) and cytokines known to induce APP. We decided to determine kinetics and potential determinants of an acute phase response after cardiac arrest and to assess whether isolated moderate hypoxia can induce APP in humans in vivo. Design: Prospective, observational study in patients and human experiment. Setting: Tertiary care university hospital. Patients and participants: 22 patients after primarily successful cardiopulmonary resuscitation (CPR) and 7 healthy volunteers. Interventions: None in patients; exposure of volunteers to simulated altitude (460 torr/6 h). Results: Following CPR, type-1 APP (C-reactive protein, α1-acidglycoprotein, serum amyloid A) and type-2 APP (haptoglobin, α1-antitrypsin) increased consistently within 1–2 days and the ’negative' APP transferrin was downregulated. This APP response occurred irrespective of the cause of arrest, the estimated time of anoxia, clinical course or patient outcome and was not different in patients with and without infectious complications. Exposure of healthy volunteers to less severe but more prolonged hypoxia did not induce APP, although a time dependent increase of serum erythropoietin (EPO) was measurable under these conditions, indicating the activation of oxygen dependent gene expression. Conclusions: (i) A marked acute phase response occurs regularly after cardiac arrest, but within the complexity of this situation the severity of hypoxia is not a predominant determinant of this response. (ii) Despite in vitro evidence for similarities in the oxygen dependent regulation of APP and EPO production, the oxygen sensitivity of these proteins in vivo is different. (iii) Measurements of APP are not revealing regarding infectious complications in the early phase after CPR.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 88 (1994), S. 147-152 
    ISSN: 1432-2242
    Keywords: Solanum tuberosum ; Somatic hybrids ; Field evaluation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Tetraploid somatic hybrids, derived from ten different fusion combinations, were grown in the field to study the inheritance of quantitatively-controlled agronomic traits. The data from two seasons showed that the heterosis in yield varied between 70% and 230% compared to the mid-parent value of the dihaploid fusion clones. The relative yield of the hybrids compared to two standard varieties (= 100%) ranged from 47% to 106%. Despite large differences in yield between the single hybrids of the same fusion combination, no significant differences could be detected between the hybrids. The analysis of the yield components revealed that the heterosis was mainly due to a highly increased tuber weight, whereas the tuber number was in general intermediate to that of the parent clones. In three combinations, the starch content of the hybrids was 15–20% higher than the midparent value and in the others it was intermediate. Fusion of clones with long oval tubers and with round or round-oval ones showed the round/round-oval form was dominant. Fusion combinations of tuber flesh colour indicated that in most cases yellow was dominant to white, while red skin colour was dominant over yellow.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 71 (1993), S. 840-842 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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