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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 4 (1970), S. 157-157 
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1084
    Keywords: Key words: Thoracic ; Lymphoma ; Radiography ; Lateral ; Investigation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Lateral chest radiography in the investigation of thoracic lymphoma remains a feature of the current literature. This study assessed what information the lateral chest radiograph (CXR) adds in the follow-up of such patients. Eighty-eight patients with known lymphoma who had a CXR and thoracic CT within the same 4-week period were assessed. Five radiologists scored eight mediastinal and hilar nodal groups and eight extramediastinal regions on the frontal CXR as normal, equivocal or definitely abnormal (denoted 0, 1 and 2, respectively). This was repeated 1 week later with a combination of frontal and lateral films. Results were compared with the findings on CT which were scored similarly using accepted criteria for the presence of lymphadenopathy. Where the lateral CXR caused a change in score at any site, this change was compared with CT to determine the effect on diagnostic accuracy. For four of the five observers, the lateral film made no significant difference in diagnostic accuracy in the assessment of mediastinal lymph nodes. A fifth observer derived a small benefit from the addition of the lateral film, although almost 30 % of this was accounted for by changing from a wrong to an equivocal diagnosis. The lateral film did cause a small increase in the detection of pleuro-parenchymal lung lesions, although none of these were clinically significant. We conclude that routine lateral chest radiography is unhelpful in the follow-up of patients with lymphoma.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 1 (1967), S. 183-191 
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé L'ost'eomalacie est accompagnée d'une augmentation de l'excrétion d'hydroxyproline contenant des peptides dans des urines qui ne diffèrent pas qualitativement de cells excrétées par un suject normal. Leurs origines sont probablement dues à la formation de nouveau collagène et à la destruction de vieilles matrices et confirment les précédentes études sur les mineraux montrant un metabolisme de l'os augmenté dans ces conditions. La Vitamine D ou une ingestion de phosphate données en guise de thérapie sont accompagnées chez quelques patients d'une plus grande augmentation de production d'hydroxyproline. La relation entre l'hyperparathyroidisme, la synthèse, la destruction et l'excrétion de collagène et la maladie de l'os dans l'osteomalacie est discutée.
    Abstract: Zusammenfassung Die Osteomalacie ist mit einer steigenden Ausscheidung von OH-Prolinpeptiden im Harn verbunden, die sich qualitativ nicht von denen im Harn Gesunder unterscheiden. Sie stammen wahrscheinlich aus der Kollagenneubildung und dem Abbau alter Matrix und bestätigen die unter diesen Bedingungen anhand von Mineralstoffen gemachten Beobachtungen eines gesteigerten Knochenumsatzes. Die Reaktion auf eine Vitamin D- oder orale Phosphatbehandlung ist bei einigen Patienten von einer weiteren Steigerung der OH-Prolinausscheidung begleitet. Die Beziehungen zwischen sekundären Hyperparathyreoidismus, Kollagensyntheses, Abbau und Ausscheidung und der Knochenerkrankung werden bei der Osteomalacie diskutiert.
    Notes: Abstract Osteomalacia is accompanied by an increased excretion of hydroxyproline-containing peptides in the urine which do not differ qualitatively from those excreted in the normal subject. Their origins are probably from the formation of new collagen and the breakdown of old matrix and confirm the mineral findings of increased bone turnover in these conditions. The response to therapy, either vitamin D or oral phosphate in some patients, is accompanied by a further increase in the output of hydroxyproline. The relationship between secondary hyperparathyroidism, collagen synthesis, breakdown and excretion and bone disease in osteomalacia is discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 12 (1973), S. 47-58 
    ISSN: 1432-0827
    Keywords: Rickets ; Phosphate ; Hydroxyproline ; Urine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé La convalescence de rats rachitiques, déficients en phosphate-vitamine D, s'accompagne d'une augmentation de deux à six fois, de l'excrétion de l'hydroxyle-proline urinaire. En utilisant le14C, cette augmentation semble dûe partiellement à une synthèsede novo plus élevée de peptides d'hydroxyle-proline (OHPr) par rapport à un groupe témoin de rats rachitiques. Il n'y a pas de différence significative en carbone radioactif ainsi que le démontre l'excrétion de14CO2 au cours de la période de guérison, par rapport à des témoins rachitiques. Il semble y avoir une synthèse augmentée d'un collagène, qui ne se laisse pas extraire, dans le tissu epiphysaire de rat rachitique, en voie de guérison. L'afflux de phosphate semble stimuler et fausser les voies de synthèse protéique de l'os, en plus de son rôle dans la minéralisation.
    Abstract: Zusammenfassung Die Heilung der Phosphat-Vitamin D-Mangelrachitis bei Ratten wird von einer zweibis sechsfachen Zunahme der gesamten Hydroxyprolin-Ausscheidung im Urin begleitet. Ein Vergleich mit rachitischen Kontrollratten mittels14C zeigt, daß diese Zunahme zum Teil auf eine höhere de novo-Synthese von Hydroxyprolin-(OHPr)-Peptiden während des Heilens zurückzuführen ist. Es besteht kein signifikanter Unterschied im markierten Kohlenstoff-Pool, wie dies durch die14CO2-Ausscheidung bei genesenden im Vergleich zu rachitischen Ratten nachgewiesen werden kann. Das Epiphysengewebe der genesenden rachitischen Ratte zeigt eine erhöhte Synthese von nicht extrahierbarem Collagen. Phosphat-Sättigung stimuliert und verändert die Proteinsynthese im Knochen, abgesehen von der Rolle, die sie bei der Mineralisation spielen kann.
    Notes: Abstract The healing of phosphate vitamin-D-deficient rachitic rats is accompanied by a two to sixfold increase in total urinary hydroxyproline excretion. In14C studies this increase is shown to be partly due to a higher rate ofde novo synthesis of hydroxyproline (OHPr) peptides in healing as compared with a control series of rachitic rats. There is no significant difference in the labelled carbon pool as shown by14CO2 excretion in the healing compared with rachitic rats. There is evidence for increased synthesis of non-extractable collagen from the healing rachitic rat epiphyseal tissue. Phosphate repletion is seen to stimulate and alter protein synthetic pathways in bone apart from the role it may play in mineralisation.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 22 (1976), S. 501-501 
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 108 (1980), S. 375-383 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Analytica Chimica Acta 58 (1972), S. 363-368 
    ISSN: 0003-2670
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: It was recently shown that the two transcripts encoding the isoforms of 2′,3′-cyclic nucleotide 3′-phosphodiesterase (CNP1 and CNP2) are differentially regulated during the process of oligodendrocyte maturation. In oligodendrocyte precursors, only CNP2 mRNA is present, whereas in differentiating oligodendrocytes, both CNP1 and CNP2 mRNAs are expressed. This pattern of CNP expression is likely due to stage-specific transcriptional regulation of the two CNP promoters during the process of oligodendrocyte differentiation. Here, we report the influence of increased intracellular cyclic AMP (cAMP) levels on the transcription of both CNP1 and CNP2 mRNAs in rat C6 glioma cells. We found that the transcription of CNP1 mRNA was significantly increased in comparison with that of CNP2 mRNA in cells treated with cAMP analogues to elevate intracellular cAMP levels. This up-regulation of CNP1 expression (a) is due to an increase of transcription, (b) requires de novo protein synthesis, and (c) requires the activity of protein kinase A. These results are physiologically significant and support the idea that a cAMP-mediated pathway is part of the molecular mechanisms regulating the expression of CNP1 in oligodendrocytes. The regulation of CNP1 promoter activity by cAMP was then investigated in stably transfected C6 cell lines containing various deletions of the CNP promoter directing the bacterial chloramphenicol acetyltransferase gene. We showed that the sequence between nucleotides -126 and -102 was essential for the cAMP-dependent induction of CNP1 expression. Gel retardation analysis showed that two protein-DNA complexes are formed between this sequence and nuclear factors from C6 cells treated or not treated with cAMP. This suggests that the induction of CNP1 mRNA transcription is not mediated by changes in binding of nuclear factors that interact directly with the -126/-102 sequence. Sequence analysis of this region revealed the presence of a putative activator protein-2 (AP-2) binding site. It is interesting that mutagenesis of this region resulted in a significant reduction in transcriptional responses to cAMP, implying a possible role for the AP-2 factor in the expression of CNP1. In addition, we have shown that putative binding sites for activator protein-4 and nuclear factor-1 adjacent to the AP-2 site are required for efficient induction of CNP1 expression by cAMP. Taken together, our results show that the cAMP-dependent accumulation of CNP1 mRNA appears to depend on the synergistic interaction of several regulatory elements.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The contribution of electron and immunofluorescence microscopy to renal biopsy diagnosis is illustrated by the results obtained in a personal series of patients with various types of glomerulonephritis. Introductory notes on the ultrastructure of the glomerular capillary and on immunological processes are also included. Immunofluorescent staining has particular value in demonstrating IgG-containing deposits in early membranous glomerulonephritis at a stage when ordinary microscopy is inconclusive. It is capable of throwing light on the mechanism of glomerular damage in severe extracapillary proliferation and in some cases of recurrent haematuria, but is less successful in separating minimal change disease from proliferative processes. Electron microscopy reveals the precise site of immune deposits and fibrin together with basement membrane changes, the microtubular structures common in SLE, and other details. It is concluded that for the accurate diagnosis of kidney disease it is essential to supplement light microscopy by one, or preferably both these methods.
    Type of Medium: Electronic Resource
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