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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 20 (1973), S. 0 
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The isolation of synaptic vesicles from mouse brain by a modification of previously reported methodology is described. Homogeneity of the preparations was ascertained by electron microscopy. Vesicles thus isolated contained cyclic AMP (365 ± 44 pmol/mg of protein; mean ± S.E.M.) and adenosine 3′,5′-monophosphate phosphodiesterase activity (500 pmol/mg of protein per 30 min). The number of vesicles in three of the vesicle preparations was determined by a visual count of grid fields under the electron microscope. The content of cyclic AMP in the vesicles was calculated at 5000-7500 molecules/vesiclc. The presence of cyclic AMP in the synaptic vesicles from presynaptic nerve endings would support a role for this nucleotide in nerve transmission.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 65 (1961), S. 758-762 
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 10 (1983), S. 0 
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. Circulating immune complexes in excess of the equivalent of 20 m̈g/ml heat-aggregated IgG were found in fourteen out of twenty patients diagnosed as having preeclampsia.2. Only six of the nineteen controls tested had similar levels of immune complexes. Recent studies have established that concentrations of heat aggregated IgG in excess of 20 m̈g/ml activate human platelets to release sufficient concentrations of vasoactive agents to constrict a human blood vessel in vitro.3. It is therefore suggested that in vivo platelet activation by circulating immune complexes may release sufficient concentrations of vasoactive agents to contribute to the hypertension in pre-eclampsia.
    Materialart: Digitale Medien
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  • 4
    facet.materialart.
    Unbekannt
    New York : Periodicals Archive Online (PAO)
    Romanic Review. 61:1 (1970:Feb.) 43 
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  • 5
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 333-336 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SINCE the thyroid hormone is held by peptide bonds within the molecule of its storage form, thyroglobulin, it is generally accepted that hydrolytic enzymes are concerned with its controlled release into the blood stream. The proteolytic activity of thyroid tissue has been shown to vary with the ...
    Materialart: Digitale Medien
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  • 6
    ISSN: 1432-0428
    Schlagwort(e): Chinese hamster ; spontaneous diabetes ; glucosuria ; ketonuria ; glycogen ; glycogen accumulation ; retina ; Müller cell ; kidney ; distal tubule ; pancreatic islet ; a cell ; Β cell ; D cell ; electron microscopy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Intracellular glycogen deposits were consistently found in the retina, kidney and pancreatic islets of diabetic-ketonuric Chinese hamsters. Accumulation of glycogen in the outer nuclear layer of the retina was mostly associated with severity of the disease, but was not related to age or sex. The type of retinal cell involved in the accumulation of glycogen was not clearly established. However, the position of the affected cell, side by side with retinal neurons, suggests that the glycogen deposits were within Müller cells. These giant glias normally synthesize and store glycogen. All ketonuric Chinese hamsters examined showed some accumulation of glycogen in distal tubules of the kidney. This abnormal glycogen was not found in glucosuric non-ketonuric or in nondiabetic Chinese hamsters. Variable amounts of glycogen were found inΒ cells of pancreatic islets of diabetic hamsters, as reported by others. However, accumulation of glycogen was also found inα and D islet cells from 2 middle aged Chinese hamsters with long term glucosuria and recent ketonuria. Abnormal glucose and glycogen metabolism seem to play an important role in the pathogenesis of diabetes in the Chinese hamster.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Rheumatology international 2 (1982), S. 137-139 
    ISSN: 1437-160X
    Schlagwort(e): Rheumatoid vasculitis ; Rheumtoid arthritis ; B8 DR3 phenotype ; Tissue typing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary A statistically significant association of clinical rheumatoid vasculitis (excluding nodules or nail-fold infarcts only) with the HLA B8 DR3 phenotype was found when comparing 30 patients with vasculitis with 84 classic or definite rheumatoid patients without clinical vasculitis. The previously reported association on HLA DR4 with rheumatoid disease was also confirmed.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    European journal of clinical microbiology & infectious diseases 2 (1983), S. 327-334 
    ISSN: 1435-4373
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Bacteroides fragilis grown in the presence of sub-inhibitory concentrations of clindamycin was shown to be altered its degree of encapsulation and susceptibility to phagocytosis by human polymorphonuclear leukocytes. Little polysaccharide capsule could be demonstrated either by light or transmission electron microscopy when the bacteria were grown anaerobically for four hours in the presence of 1/2 MIC of clindamycin. Such clindamycin-grown cells could be opsonized by normal human serum, and although less complement was consumed in the process, were more effectively taken up by the leukocytes than bacteria grown in the absence of the drug (45 % versus 24 %). It was also shown that drug treatment caused significant cellular leakage in the presence of serum, the3H-label appearing extracellularly. In addition there was greater loss of viability of the bacterial cells grown in the presence of the drug and subsequently exposed to the leukocytes for 60 min.
    Materialart: Digitale Medien
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  • 9
    ISSN: 1435-2451
    Schlagwort(e): Cytoprotection ; Prostaglandin ; Mucosal blood flow ; Cytoprotektion ; Prostaglandin ; Magendurchblutung
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Der Mechanismus der Cytoprotektion von Prostaglandin (PG) auf die Magenmucosa ist unbekannt. Anaesthesierte Kaninchen erhielten in der Gruppe (GR) I (n=8) im. Aspirin (ASA) (100 mg/kg als Bolus, 66 mg/kg/h kontinuierlich) in der GR 11 (n=10) NaCI und in der GR III (n=7) zusätzlich zum ASA, PGE I (0,1 μg/kg/min) als Infusion über 120 min. Der Mucosa-Blutfluß (MBF) wurde mit radioaktiven Mikrosphären gemessen. In der GR I fiel der MBF nach 15 min um 72,3+3,8% (+ SEM) und nach 120 min um 73,1+3,8% (p 0,05 gegen % Änderung in GR II und III). Nach 120 min zeigte sich in der GR I 19,8 + 7,6% der Fundusmucosa hämorrhagisch, in der GR 11 6,1 +5,2% und in der GR 1112,0+ 1,4% (p 0,05 gegen GR II und III). Wir schließen, daß der cytoprotektive Effekt des PGE I auf einer Aufhebung der ASA bedingten Mucosaischämie beruht.
    Notizen: Summary The mechanism by which prostaglandins (PG) exert their cytoprotective effect on the gastric mucosa is not known. Anesthetized rabbits received in Group (GR) I (n = 8) i.v. aspirin (ASA) (100 mg/kg as bolus, 66 mg/kg/h continuously), in GR II (n=10) NaCl and in Gr III PGE I (0.1 μg/kg/min) as an infusion for 120 min. Mucosal blood flow (MBF) was measured with radioactive microspheres. After 15 min, fundus MBF had decreased in GR I by 72.3+3.8% (+SEM) and after 120 min by 73.1+3.8% (P 0.05 vs % change in GR II and III). After 120 min, 19.8+7.6% of the mucosa had become hemorrhagic in GR I, 6.1+5.2% in GR II and 2.0+1.4% in GR III (P 0.05 vs GR II and III). We conclude that the cytoprotective effect of PGE I may be mediated through prevention of ASA-induced mucosal ischemia.
    Materialart: Digitale Medien
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Journal of materials science 9 (1974), S. 503-505 
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Materialart: Digitale Medien
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