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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 36 (1976), S. 161-175 
    ISSN: 1432-0533
    Keywords: Ultrastructural morphometry ; Stereology ; Chromatolysis ; Axotomy ; Superior cervical ganglion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This paper first gives a short introduction into the principles of stereology. It shows then its actual application to the assessment of ultrastructural-morphometric data of the normal superior cervical ganglion of the rat (base-line data) and after axotomy. In the early phase after axon transsection the volumetric composition of the superior cervical ganglionic neuron remains constant. Only the volume density of the lysosomal forms is significantly increased from 0.9–3.2%. Ultrastructural morphometric analysis of the rough endoplasmic reticulum does not provide any information on quantitative changes underlying the phenomenon of central chromatolysis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 174-176 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of 2 fixatives, (1) s-Collidin buffered OsO4, (2) phosphate buffered OsO4, on the liver cell was studied by morphometric analysis. After fixation with solution 2, large areas of smooth endoplasmic reticulum were covered by electron-opaque deposits of glycogen. No such masking was noticed by using solution 1. Other cell organelles showed no significant differences in their relative volumes. By using fixative solution 2, decrease in glycogen can simulate relative volume increase of the smooth endoplasmic reticulum.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary 30 year old male patient with recurrent hemoptoe. The hemorrhages of the lung were accompanied by fever and roentgenologically slight infiltrations of the middle and lower compartments of the lung with simultaneous decrease of hemoglobine. The disease having lasted 16 months the patient has been free of complaints for the last 5 months. The biopsy of the kidney resulted in the diagnosis of a momentarily inactive proliferative focal glomerulitis. This could be confirmed by electron microscopical investigation, although there were found traces of activity. of the cell elements. Deposits of iron faintly indicated under the light microscope, were confirmed by electron microscopy. The total picture corresponds to a typical Goodpasture' syndrome.
    Notes: Zusammenfassung 30jähriger Mann mit rezidivierender Hämoptoe. Die Lungenblutungen waren von Fieber und röntgenologisch flüchtigen Lungeninfiltraten in Mittel- und Untergeschossen, gleichzeitigem Abfall des Hämoglobins begleitet. Bisherige Krankheitsdauer 16 Monate, die letzten 5 Monate war der Patient völlig beschwerdefrei. Die Nierenbiopsie ergab eine momentan inaktive proliferative Herdglomerulitis, die auch elektronenmikroskopisch nachgewiesen werden konnte. Allerdings fanden sich ultrastrukturell noch deutliche Zeichen für Aktivität der Zellelemente. Die lichtmikroskopisch nur angedeutete Eisenablagerung im Deckepithel der Glomerula konnte elektronenmikroskopisch bestätigt werden. — Das Gesamtbild entspricht einem typischen Goodpasture-Syndrom.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Steroid Biochemistry 19 (1983), S. 42 
    ISSN: 0022-4731
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Thein vitro activity of enoxacin was tested in 14 German microbiological centers shortly after the introduction of the drug in Germany. 2748 unselected clinical isolates including 15 bacterial species were analysed using microtiter plates. The MIC90-values were as follows:Staphylococcus aureus 4 mg/l,Enterococcus faecalis 16 mg/l, Enterobacteriaceae 0.5 mg/l,Pseudomonas aeruginosa 8 mg/l. There is good correlation between these results and those of former investigations. It is known that quinolones are only moderately active against enterococci. 8.5% ofS. aureus, and 1.4% of Enterobacteriaceae were found to be resistant (MIC〉4 mg/l). As toP. aeruginosa, the study revealed that despite a generally low rate of resistance in specific clinical settings, specific problems can arise: in one institution, the MIC90 ofP. aeruginosa was 32 mg/l, with a resistance rate of 56.1% (n=57). In the other centers the MIC90 was 2 mg/l and the resistance rate 5.0% (n=302). In the first center, many of the isolates were from paraplegic patients or patients with cystic fibrosis pretreated with quinolones. This study will be repeated in two years' time in order to determine an eventual change in resistance.
    Notes: Zusammenfassung DieIn vitro-Aktivität von Enoxacin wurde kurz nach der Einführung der Substanz in Deutschland in 14 deutschen mikrobiologischen Zentren bestimmt. 2748 frische klinische Isolate von 15 Bakterienarten wurden mittels Mikrotiterplatten getestet. Hierbei fanden wir folgende MHK90-Werte:Staphylococcus aureus 4 mg/l,Enterococcus faecalis 16 mg/l, Enterobacteriaceae 0,5 mg/l,Pseudomonas aeruginosa 8 mg/l. Diese Werte stimmen gut mit den Ergebnissen früherer Untersuchungen überein. Die mäßige Aktivität von Gyrasehemmern gegen Enterokokken ist bekannt. BeiS. aureus fanden wir bei 8,5% der Isolate Resistenz (MHK〉4 mg/l), bei Enterobacteriaceae nur bei 1,4%. BeiP. aeruginosa zeigte sich, daß trotz geringer Resistenz im allgemeinen in einzelnen Zentren Probleme entstehen können: Bei einem der beteiligten Institute betrugen beiP. aeruginosa die MHK90 32mg/l und die Resistenzrate 56,1% (n=57), bei den übrigen Zentren lagen diese Werte bei 2 mg/l und 5,0% (n=302). In dem ersten Zentrum stammten die Isolate häufig von Patienten mit Querschnittlähmung oder cystischer Fibrose, die mit Gyrasehemmern vorbehandelt waren. Diese multizentrische Studie soll im Abstand von zwei Jahren wiederholt werden, um einen eventuellen Resistenzanstieg erkennen zu lassen.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Ziel der vorgelegten Studie ist die Einschätzung der aktuellen epidemiologischen Situation der Frühsommer-Meningoenzephalitis in den fünf neuen Bundesländern und im Saarland mit Hilfe des Nachweises von FSMEV-RNA in ungesogenen Zecken (Ixodes ricinus) durch eine RT-PCR-Technik. 22 273 Zecken wurden in den fünf neuen Ländern (einige auch in Bayern und Baden-Württemberg) gesammelt und in 294 Pools untersucht. Der spezifische RNA-Nachweis gelang viermal in Zecken aus Mecklenburg-Vorpommern, einmal in solchen aus Brandenburg und einmal aus Thüringen. In Bayern und Baden-Württemberg gelang der Virus-RNA-Nachweis dreimal. Die Sequenzdaten der PCR-Amplifikate zeigten, auch im Vergleich mit denen des Prototypstammes Neudoerfl, den hohen Grad der Konservierung im Bereich der 5′ NCR. 8780 saarländische Zecken aus allen Gebieten des Bundeslandes wurden in 21 Pools untersucht, positive PCR-Signale konnten in zwei Pools aus Saarlouis und Perl und Umgebung gefunden werden. Der relativ seltene FSMEV-RNA-Nachweis in den neuen Ländern und im Saarland berechtigt nicht, eine generelle Impfempfehlung für diese Gebiete zu geben. Ein Impfschutz sollte jedoch vor Einreise in die Endemiegebiete Bayerns und Baden-Württembergs bestehen.
    Notes: Summary The aim of the present study was to analyse the current epidemiological situation with respect to TBE in the new federal “Länder” of Germany and in Saarland through detection of the TBEV genome in unengorged ticks using an RT-PCR technique. 22,273 ticks (Ixodes ricinus) were collected in the five new “Länder” (and some in Bavaria and Baden-Württemberg) and divided into 294 pools. It was possible to detect TBEV RNA in six pools of ticks from Mecklenburg Western-Pomerania [4], Brandenburg [1], Thuringia [1] (and in three pools from Bavaria and Baden-Württemberg). The nucleotide sequence data of the PCR products were analysed and compared. In Saarland 8,780 ticks were collected in 70 habitats from all the geographic regions and analysed using the PCR in 21 pools; two pools produced positive PCR signals (Saarlouis, Perl). We cannot as a result make a general recommendation that TBE-immunization be introduced in Saarland and in the new federal Länder of Germany. In Germany, however, TBE immunoprophylaxis in Bavaria and Baden-Württemberg is very important.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    World journal of urology 4 (1986), S. 65-70 
    ISSN: 1433-8726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Objective and reproducible determinations of sperm motility and morphology are achieved using a semi-automatic image analysis system under optomanual control. The method was used to evaluate the short-and long-term effects of the operative treatment of varicocele on sperm density, motility and velocity in 27 men with left-sided varicosities. Whereas a significant improvement (p=0.0001) in sperm density was found within 3 months after surgery, almost no increases in sperm motility and velocity occurred. The actual post-operative improvement in sperm density did not correlate with the preoperative sperm counts (r=0.291). Between the preoperative values of motility and velocity and the postoperative improvement, however, a negative correlation of −0.431 and −0.759, respectively, was found. Considering the 21 patients, who were followed up for a minimum of 9 months, a sustained increase in sperm density, motility and velocity of at least 50% was observed in 14 (66.7%), 7 (33.3%) and 5 (23.8%), respectively. In general, the better results were obtained in the group with the poorer preoperative semen characteristics. However, only 4 patients (19%) showed a lasting improvement in all 3 parameters. Even more interesting was the sustained decrease in sperm velocity observed in 9 men (42.9%), who had rather good preoperative values. It is concluded, that a timely operative treatment of varicocele might prevent further impairment of semen quality. However, more research on the natural course of varicocele is necessary.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 355 (1981), S. 616-616 
    ISSN: 1435-2451
    Keywords: New collagen graft in animal test ; Results ; Histology ; Neue Kollagenprothese im Tierexperiment ; Ergebnisse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über die Implantation einer neuen bovinen Kollagenprothese berichtet, die bei 19 Hunden im Bereich der infrarenalen Aorta implantiert wurde. — Die Durchgängigkeitsrate betrug nach bis zu 7 Monaten 95%. — Das Ausgangsmaterial der neuen Prothese ist die A. carotis comm. des Kalbes. Nach mechanischer Präparation, Entwässerung und Quervernetzung mit Säuredichlorid wurde potentiell antigenes Material durch enzymatische Hydrolyse aus der Prothese entfernt. Anschließend erfolgte eine Behandlung mit Glutaraldehyd.
    Notes: Summary A new modified bovine collagen graft is reported on that was implanted 19 times in dogs distal to the renal arteries and proximal to the aortic bifurcation. After more than 7 months the patency rate was 95 %. The new prosthesis was originally made from the carotid arteries of calves. After mechanical preparation, dehydration, and cross-linking with acid dichloride, potentially antigenic material was removed by enzymatic hydrolysis and finally, the material was treated with glutaraldehyde.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 80 (1973), S. 323-334 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach 3 tägiger Bleomycinverabreichung (je 2,5 mg/100 g Körpergewicht) wurden mit Hilfe der Morphometrie an der Leberparenchymzelle von Wistarratten folgende Veränderungen festgestellt: 1. Das rauhe endoplasmatische Reticulum weist teilweise dilatierte und teilweise vesiculierte Abschnitte auf und büßt ein Drittel sowohl seines Kompartimentvolumens als auch seiner Membranoberfläche ein. Demzufolge beeinträchtigt Bleomycin die hepatocelluläre Syntheseleistung. 2. Die freien (d. h. nicht membrangebundenen) Ribosomen nehmen im Einheitsvolumen Cytoplasma beträchtlich zu und sind häufig zu semizirkulären und spiralförmigen Polysemen angeordnet, was als Ausdruck einer strukturellen und funktionellen Anpassungsreaktion gedeutet wird. 3. Das hepatocelluläre Chondriom wird durch eine kleinere Anzahl vergrößerter Mitochondrion ohne Veränderung ihres Volumenanteils am Einheitsvolumen Cytoplasma quantitativ umgegliedert, so daß auch im energetisch aktiven Kompartiment eine Anpassungsreaktion erfolgt.
    Notes: Summary Following 3 days of bleomycine administration (2.5 mg/100g body weigth), the following morphometric changes in Wistar rat hepatocytes were determined: 1. The rough endoplasmic reticulum showed partially dilated and partially vesiculated sectors. There was a 33% decrease of both hepatocytic compartimental volume and membrane surface area. Hence, bleomycine has directly impaired the synthesizing efficiency of the liver cells. 2. The free i.e. non-membrane attached ribosomes assume a considerably larger proportion of the cytoplasmic unit volume; they are frequently arranged in semi-circular and spiral-shapped polysomes. This latter finding may be interpreted as structural and functional adaptive reactions. 3. A quantitative reshuffling of hepatocytic chondriomes has been induced by a rather small number of enlarged mitochondria. There has, however, been no change in the volume fraction of the cytoplasmic unit volume. Therefore, an adaptive reaction has also transpired in the energetic-active compartiment.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 181-182 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Long-term treatment of rats with Penicillamine results in an osteolathyrism based on an alteration in crosslinkage of tropocollagen in epiphyseal cartilage. Uptake of Sr85 is reduced, half-time disappearance prolonged.
    Type of Medium: Electronic Resource
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