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  • 1
    Digitale Medien
    Digitale Medien
    Non-paramagnetism of human serum proteins (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 984-984 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Normale Serumproteine wurden mittels Elektromagnetophorese in Zellulose-Azetatgel ausgeführt, wobei keine Trennung der einzelnen Proteine erfolgte. Es stellte sich heraus, dass Serumproteine keine paramagnetischen Eigenschaften aufweisen.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02135790
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  • 2
    Digitale Medien
    Digitale Medien
    Histochemically demonstrable non-specific cholinesterase as an indicator of peripheral nerve lesion in carbon disulphide-induced polyneuropathy (1974)
    Springer
    Acta neuropathologica 29 (1974), S. 361-366 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Cholinesterase ; Axonal Degeneration ; Polyneuropathy ; Carbon Disulphide
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Intramuscular nerves in the anterior tibial muscle of rats with carbon disulphide (CS2)-induced polyneuropathy were studied ultrastructurally and after histochemical demonstration of non-specific cholinesterase (Ns. ChE; E.C.3.1.1.8) activity. After 5 weeks' exposure to CS2 the intramuscular nerves showed occasional weak Ns. ChE activity, which did not appear in the normal intramuscular nerves. Axoplasmic ultrastructure was normal in the majority of the nerves. After 5 months' exposure to CS2 there was intense Ns. ChE activity along intrauscular nerve trunks. The axoplasm of the nerves showed marked degeneration: distended smooth-surfaced vacuoles, dense bodies, disappearance of neurotubules and appearance of increased amounts of neurofilaments. The present findings suggest that histochemical demonstration of Ns. ChE activity can be employed as an indicator of early axonal degeneration in progressive polyneuropathy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00685489
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  • 3
    Digitale Medien
    Digitale Medien
    Structural development of myoneural junctions in the human embryo (1972)
    Springer
    Histochemistry and cell biology 32 (1972), S. 107-112 
    Details
    ISSN: 1432-119X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The structure of myoneural junctions in the tibialis anterior and intercostal muscles was studied after histochemical reaction for myoneural acetylcholinesterase (E.C. 3.1.1.7) in human embryos. Myoneural junctions of a primitive form were first seen in the intercostal muscle at the age of 8.6 weeks (crown-rump length of 3.2 cm), and in the tibialis anterior muscle at the age of 10 weeks (4.3 cm). The postsynaptic membrane was devoid of any junctional folds typical of adult synapses up to the age of about 19 weeks. At first small, the junctional folds gradually became deeper and more prominent during the following weeks, and some ramification of the previously coherent postsynaptic area took place. Myoneural morphogenesis was not completed at birth, although well developed postsynaptic Moldings were present.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00303726
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  • 4
    Digitale Medien
    Digitale Medien
    Occupational exposure to solvents and cerebellar, brainstem and vestibular functions (1989)
    Springer
    International archives of occupational and environmental health 61 (1989), S. 397-401 
    Details
    ISSN: 1432-1246
    Schlagwort(e): Organic solvents ; Alcohol ; Brainstem auditory-evoked potentials ; Electronystagmography ; Posturography
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Forty-eight persons (age 44, SD 9 years) exposed to paint solvents and 40 nonexposed referents (age 45, SD 9 years) were examined. The duration of exposure was 4 to 30 (mean 20) years and the life-time exposure level was estimated to have been 10 to 330 (mean 60%) of the hygienic standard. The methods used were a neurological examination, electroencephalography, brainstem auditory-evoked potentials, electronystagmography, and posturography. Lifetime exposure was estimated on the basis of a detailed occupational history and environmental measurements made at the work places over several years. The average weekly alcohol consumption was established in a detailed interview. Due to the small number of subjects examined, the study was inconclusive. The findings classified as abnormal were slightly more common in the exposed than in the referents, and in the persons who used alcohol than in the non-users. The differences were not statistically significant, and no exposure-response relationships were found.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00381031
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  • 5
    Digitale Medien
    Digitale Medien
    The effect of exposure to high and low frequency hand-arm vibration on finger systolic pressure (1987)
    Springer
    European journal of applied physiology 56 (1987), S. 440-443 
    Details
    ISSN: 1439-6327
    Schlagwort(e): Vibration syndrome ; Distal blood pressure ; Neurology ; Neurophysiology ; Peripheral nerves
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Twenty three patients with hand-arm vibration exposure and diagnosed vibration syndrome were given a thorough clinical and neurophysiological examination, together with finger strain gauge plethysmography. Eleven of the patients were forest workers regularly using chain saws (low frequency vibration exposure), and twelve were metal grinders (higher frequency vibration exposure). Both groups had significantly lower finger blood pressures than healthy controls, and comparisons between the groups indicated that the mean values tended to be lower in the grinders. The findings suggest that hand-arm vibration exosure is associated with obstructive changes in the distal arteries of the fingers, and that vibration frequency is one of the factors determining the severity of the changes and the time of onset of the symptoms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00417772
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