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  • 1
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Non-freezing low temperature storage causes injury to melons and most other fruit and vegetables of tropical and subtropical origin. We demonstrate here that ethylene suppression through an antisense ACC oxidase (ACO) gene considerably reduced the sensitivity of Charentais cantaloupe melons to chilling injury. In contrast to wild-type fruit, antisense ACO melons did not develop the characteristic chilling injury of pitting and browning of the rind neither when stored at low temperature (3 weeks at 2 °C) nor upon rewarming. Treating antisense melons with 10 p.p.m. ethylene for more than 1 d prior to cold storage resulted in the restoration of chilling sensitivity. When the ethylene treatment was performed after cold storage, the chilling injury symptoms did not appear. The tolerance to chilling was associated with a lower accumulation of ethanol and acetaldehyde, reduced membrane deterioration and higher capacity of the fruit to remove active oxygen species. The activities of catalase, superoxide dismutase and peroxidase were markedly increased in antisense ACO fruit in comparison with wild-type fruit, particulary upon rewarming and post-storage ethylene treatment. Severe chilling injury symptoms were correlated with a lower activity of activated oxygen scavenging enzymes. These results demonstrate that ethylene acts in conjunction with low temperature to induce metabolic shifts that participate in the development of chilling injury.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Physiological characterization of ethylene-suppressed Cantaloupe Charentais melons (Cucumis melo var. cantalupensis Naud cv. Védrantais) revealed that some ripening-associated events, like degreening of the rind and cell separation in the peduncular abscission zone, are totally dependent on ethylene. By contrast, some other ripening events, like softening and membrane deterioration, depend only partially on ethylene and display some ethylene-independent components. Application of increasing levels of exogenous ethylene on these antisense 1-aminocyclopropane-1-carboxylic acid oxidase fruits enabled the determination of the gradual sensitivity of various ripening pathways to the hormone. The threshold level of ethylene capable of physiological activity varied from 1 ppm for degreening of the rind to 2.5 ppm for softening, membrane deterioration and cell separation in the peduncular abscission zone. Up to a saturating dose of 5 ppm, the extent of rind degreening was proportionally related to the level of applied ethylene. The saturating levels of ethylene for flesh softening (2.5 ppm) and for membrane deterioration and cell separation in the peduncular abscission zone (5 ppm) were much lower than the internal ethylene found at the climacteric peak of wild-type fruit (over 100 ppm). The cessation of ethylene treatment resulted in a complete arrest of the rind degreening and peduncular cell separation indicating that both ripening pathways are completely dependent on ethylene. On the contrary, softening and membrane deterioration, though significantly slowed upon removal of ethylene treatment, continued to proceed in the absence of the hormone, thereby unmasking the ethylene-independent component of softening and membrane deterioration. The presence of ethylene-independent components in the regulation of individual pathways indicates that the ripening of climacteric fruit involves a substantial portion of non-climacteric regulation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Solid State Chemistry 48 (1983), S. 215-230 
    ISSN: 0022-4596
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Solid State Chemistry 48 (1983), S. 231-241 
    ISSN: 0022-4596
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 1 (1970), S. 179-182 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé A propos de 30 veines cérébrales postèrieures, les auteurs étudient la radio-anatomie normale de cette veine, dont l'étude permet de juger de l'envahissement du corps calleux dans les tumeurs malignes tel qu'ils le rapportent dans 3 de leurs exemples.
    Abstract: Zusammenfassung Anhand von 95 Carotisangiogrammen und 5 Vertebralisangiogrammen wurde die normale radiologische Anatomie der hinteren Cerebralvene beschrieben. Diese Vene wurde in 30 Fällen klar im Angiogramm abgebildet. Es wird auf die Symptome einer Tumor-Infiltration des splenium corporis callosi hingewiesen.
    Notes: Summary The authors reviewed 95 carotid angiographies and 5 vertebral angiographies. In this material the posterior cerebral vein was visible in 30 cases. Its normal radiological anatomy was studied and the signs of a tumoral infiltration of the splenium corporis callosi was described.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 2 (1971), S. 52-54 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'auteur rapporte l'image normale et pathologique de la ligne de De Coster. Les cas pathologiques concernent des traumatismes, des infections, des tumeurs et un cas de rhinorréé essentielle.
    Abstract: Zusammenfassung Die Autoren berichten über das normale und pathologische Bild der De Coster'schen Linie.
    Notes: Summary The author reports the normal and pathological morphology of De Coster's line especially on tomographic sections. The pathological material concerns traumatic, infectious, tumoral cases and one case of idiophatic rhinorrhoea
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 3 (1972), S. 193-198 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs soulignent trois points ressortant de leurs études sur les spasmes artériels. 1. les spasmes de la carotide interne cervicale sont souvent transitoires et réagissent aux drogues adrénolytiques; 2. l'expérimentation sur le chien montre que l'injection simultanée de drogues réputées vasodilatatrices peut provoquer des spasmes; 3. description d'un cas de spasme diffus de l'artère carotide interne avec dilatation également diffuse du système veineux.
    Abstract: Zusammenfassung Spasmen der Arteria carotis interna sind oftmals vorübergehend und scheinen auf adrenolytische Substanzen zu reagieren. Experimentelle Untersuchungen an Hunden zeigten, daß intra-arterielle Injektionen von Vasodilatatoren arterielle Spasmen hervorrufen können. Ferner berichten die Autoren über einen Fall von diffusen Spasmen des Carotis-Kreislaufs, die mit einer allgemeinen Venenerweiterung verbunden waren.
    Notes: Summary Three points concerning the authors' studies on arterial spasms are reported.—1. Spasms of the internal cervical carotid artery are often transient and seem to react to adrenolytic drugs.—2. Experiments carried out on dogs show that intra-arterial injections of a mixture of drugs reputed to be vasodilatative may provoke arterial spasms.—3. Report of the occurence in one case of a diffuse spasm in the carotid system with diffuse dilatation of the venous system.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 2 (1971), S. 37-45 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'étude de 50 phlébogrammes profonds nous a permis de définir les branches postérieures ventriculaires de la veine cérébrale interne et de la veine basilaire de Rosenthal. La relative fréquence de ces veines a été estimée, la veine médiale atriale ou veine médiane du carrefour ventriculaire étant la plus fréquente.
    Abstract: Zusammenfassung Anhand von 50 ausgewählten, technisch einwandfreien Carotis-Angiogrammen wurde versucht, die hintern ventrikulären Äste der V. cerebralis interna und der V. basilaris in 2 Ebenen zu bestimmen. —Die in dieser Region am häufigsten auftretende Vene war: The medial atrial vein.
    Notes: Summary In a group of 50 proselected examples of venous phase of carotid angiography the definition and delining of the position of the posterior ventricular branches of the internal cerebral and basilar vein in 2 projections was made. The relative frequences of these veins were recorded. The medial atrial vein was found to be the prevailing vessel in this region.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé A propos de 40 tumeurs malignes à extension profonde vers les noyaux gris, les auteurs étudient les veines ventriculaires que sont parfaitement définies dans 50% des cas. L'étude de ces veines constitue un élément d'appoint pour juger l'envahissement profond d'un processus expansif.
    Abstract: Zusammenfassung In einer Serie von 40 Fällen tief lokalisierter Cerebraltumoren, die in die basalen Ganglien einwuchsen, haben die Autoren in 50% die ventrikulären Äste der vena cerebralis interna und der vena basilaris definieren können. Die venösen Zeichen der tiefen Proliferation der Tumoren wurden vermerkt und beschrieben.
    Notes: Summary The authors reviewed 40 cases of cerebral tumours with deep extension into the basal ganglia. — In 50% the posterior ventricular branches of the internal and basilar veins could be defined. The venous signs of deep tumoral extension of cerebral tumours are evaluated.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 2 (1971), S. 154-161 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs rapportent 6 variantes du drainage de la veine mésencéphalique latérale.
    Abstract: Zusammenfassung Die Autoren beschreiben 6 Varianten des Abflusses der lateralen Vene des Mesencephalons.
    Notes: Summary The authors report six types of variations in the drainage of the lateral mesencephalic vein.
    Type of Medium: Electronic Resource
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