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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 116 (1994), S. 7341-7348 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 54 (1992), S. 153-176 
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 43 (1978), S. 1430-1434 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
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    Manchester : Periodicals Archive Online (PAO)
    Journal of Semitic studies. 23 (1978) 127 
    ISSN: 0022-4480
    Topics: Linguistics and Literary Studies , Ethnic Sciences
    Notes: REVIEWS
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  • 5
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    Unknown
    Manchester : Periodicals Archive Online (PAO)
    Journal of Semitic studies. 23 (1978) 127 
    ISSN: 0022-4480
    Topics: Linguistics and Literary Studies , Ethnic Sciences
    Notes: REVIEWS
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 35 (1975), S. 0 
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In a solution culture experiment with 4-week-old barley plants (variety Villa) the influence of NaCl salinization and of KCl additions on the uptake and turnover of labelled N (15NH415NO3) was studied. Labelled N was applied for 24 h at the end of the growth period.Salinization impaired growth and uptake of labelled N. The incorporation of labelled N into the protein fraction, however, was improved by NaCl salinization. Additions of KCl to the nutrient solution diminished the negative effect of NaCl salinization on growth. At both NaCl salinization levels (60 and 120 mM) K additions favoured the uptake of labelled N and particularly its incorporation into the protein fraction.It is suggested that the negative influence of the NaCl stress is not primarily due to an impaired protein synthesis, but is possibly caused by a deterimental effect of Na on other metabolic processes.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 302 (1978), S. 87-90 
    ISSN: 1432-1912
    Keywords: Cats ; Cardiac glycosides ; Brain ; Distribution ; Side-effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The tissue/plasma ratio of β-methyl-digoxin for cardiac muscle in cats was about the same 24 h after a single dose of 30 μg/kg as after a loading dose of 30 μg/kg followed by 3 maintenance doses of 7.5 μg/kg at 24 h intervals. The ratio for the brain increased 2-fold during that time. After the i.v. injection of a toxic loading dose of 70 μg/kg β-methyl-digoxin or digoxin, maintenance doses of as little as 15 μg/kg at 48 h intervals sufficed to maintain the minimum plasma glycoside concentrations determined by RIA at about 3 ng/ml. There was no difference in the plasma concentrations or in the severity of intoxication produced by both glycosides. Cats vomited within 3 h after i.v. injection of 100 μg/kg β-methyl-digoxin, whereas a loading dose of 30 μg/kg followed by 3 injections of 7.5 μg/kg at 24 h intervals were well tolerated. The concentration of radioactivity in the brain 3 h after 100 μg/kg was less than 24 h after the last injection of 7.5 μg/kg in the experiments with repeated dosage. Cerebral side-effects such as vomiting, loss of appetite and weight were better correlated with the glycoside concentrations in the plasma than with those in the brain.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 57 (1979), S. 1031-1036 
    ISSN: 1432-1440
    Keywords: Renal anemia ; Pathogenesis ; Erythropoietin deficiency ; Renale Anämie ; Pathogenese ; Erythropoietinmangel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird eine Übersicht gegeben über klinische Untersuchungen, die mit einem hochsensiblen in-vitro Erythropoietin Assay (foetale Mäuseleberzellkultur) zur Klärung der umstrittenen Rolle des Erythropoietinmangels in der Pathogenese der renalen Anämie an großen Patientenpopulationen durchgeführt wurden. Die Studien betrafen: a.) chronisch Nierenkranke mit variierender Funktionsein-schränkung in der Vordialysephase b.) nicht nephrektomierte und anephrische chronische Dialysepatienten. Die bisher vorliegenden Ergebnisse belegen, daß die Anfangsphase der renalen Anämie mit einem kompensatorischen Anstieg der Serumerythropoietinkonzentration einhergeht und somit ein Erythropoietinmangel nicht die primäre Ursache dieser Anämie sein kann; lediglich ein relativer Erythropoietinmangel ist anzunehmen. Erst in der Terminalphase der Niereninsuffizienz wird der Erythropoietinmangel absolut, so bei 50% der untersuchten chronischen, nichtnephrektomierten Hämodialysepatienten und bei allen anephrischen Patienten. An einzelnen Patienten läßt sich aber selbst in der terminalen Niereninsuffizienz eine Regulierbarkeit der Serumerythropoietinkonzentration über den Hämatokrit im Sinne eines negativen feedback nachweisen, der auf einem subnormalen Hämatokritniveau arbeitet.
    Notes: Summary A review is given of clinical studies performed by use of a highly sensitive in-vitro erythropoietin assay (fetal mouse livercell culture) in large patients' populations to clarify the controversial role of erythropoietin deficiency in the pathogenesis of renal anemia. Studies involved a.) patients with chronic renal disease and varying degree of renal insufficiency in the predialysis phase b.) non-nephrectomized and anephric patients on regular hemodialysis treatment. The data available demonstrate that the initial phase of renal anemia is accompanied by a compensatory increase of serumerythropoietin concentration and therefore erythropoietin deficiency has to be excluded as a primary cause of the anemia of renal failure; merely a relative lack of erythropoietin seems to exist. In the terminal phase of renal failure, erythropoietin deficiency becomes absolute, such in 50% of the investigated non-nephrectomized hemodialysis patients and in all anephric patients. However in individual patients even in terminal renal failure a sustained regulatory feedback mechanism between serume-rythropoietin concentration and hematocrit, probably working at lower hematocrit level, could be demonstrated.
    Type of Medium: Electronic Resource
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  • 9
    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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  • 10
    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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