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  • Calcium nephrolithiasis  (2)
  • Interneuron  (2)
  • triterpenoids  (2)
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Materialart
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Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Terpenoids and steroids from Macaranga tanarius
    Amsterdam : Elsevier
    Phytochemistry 14 (1975), S. 816-817 
    Details
    ISSN: 0031-9422
    Schlagwort(e): Euphorbiaceae ; Macaranga tanarius ; diterpenoids: 6:20-epoxylathyrol-5,10-diacetate-3-phenylacetate and ; ellagic acid. ; sitosterol, 5α-stigmastan-3,6-dione, 6β-hydroxystigmast-4-en-3-one ; steroids ; triterpenoids ; β-amyrenone, β-amyrin, friedel-3-ene, friedelin, friedelan-3β-ol
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(75)83047-0
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  • 2
    Digitale Medien
    Digitale Medien
    A new compound, 21α-hydroxyfriedel-4(23)-en-3-one and other triterpenoids from Phyllanthus reticulatus
    Amsterdam : Elsevier
    Phytochemistry 15 (1976), S. 797-798 
    Details
    ISSN: 0031-9422
    Schlagwort(e): 21α-hydroxyfriedel-4(23)-en-3-one ; 21α-hydroxyfriedelan-3-one ; Euphorbiaceae ; Phyllanthus reticulatus ; betulinic acid ; friedelan-3β-ol ; friedelin ; glochidonol ; sitosterol. ; triterpenoids
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0031-9422(00)94448-0
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  • 3
    Digitale Medien
    Digitale Medien
    Determination of heparan sulphate in kidney tissues of patients with calcium nephrolithiasis (1995)
    Springer
    Urological research 23 (1995), S. 339-342 
    Details
    ISSN: 1434-0879
    Schlagwort(e): Calcium nephrolithiasis ; Heparan sulphate ; Renal tissues
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract While the pathogenic mechanisms responsible for calcium nephrolithiasis remain unknown, the influence of heparan sulphate proteoglycan (HSPG) on disease progression of other diseases, such as polycystic kidneys and diabetic glomerulosclerosis, makes it an important candidate for the study of stone formation. Using the indirect immunofluorescence assay and image analysis, we were able to quantify and visualize the loss of HSPG localized in the basement membrane of the glomerulus and the mucosa of ureter or renal pelvis in patients with recurrent calcium nephrolithiasis as compared to normal subjects. However, no significant change in HSPG was observed in the basement membrane of the tubular epithelium. The decreased HSPG in the glomerulus may reflect the potentially disrupted anion/neutral barrier for glomerular filtration, which would encourage the accumulation of stone solutes. The drop in HSPG staining intensity in the basement membrane of the mucosa of ureter/renal pelvis may suggest the tendency of adhesion of crystal to urothelial surfaces. Based on these immunological data, it appears that HSPG plays a modulatory role in the pathogenesis of this disease.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00300024
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  • 4
    Digitale Medien
    Digitale Medien
    Quantitative analysis on the localization of chondroitin sulfate proteoglycan in renal tissues of patients with calcium nephrolithiasis (1998)
    Springer
    Urological research 26 (1998), S. 271-274 
    Details
    ISSN: 1434-0879
    Schlagwort(e): Key words Chondroitin sulfate ; Renal tissues ; Calcium nephrolithiasis ; Immunofluorescence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Previous studies have shown a significant decrease of heparin sulfate proteoglycan (HSPG) in the basement membrane of the glomerulus and the mucosa of the ureter/renal pelvis in patients with calcium nephrolithiasis. In this study, we looked at the localization of another influential proteoglycan, chondroitin sulfate (CSPG), using similar study groups by indirect immunofluorescence staining. Microscopic images were digitized and image analysis was used to quantitate the staining intensity of CSPG present in the basement membrane of the nephron. Our data showed significant loss of CSPG in the Bowman's capsule and the basement membrane of the mucosa of the ureter/renal pelvis using Mann-Whitney U-Wilcoxon Rank Sum W test with P-values of 0.0043 and 0.0041, respectively. However, absence of staining was noted in the basement membrane of the glomerulus and no significant change in the basement membrane of the tubular epithelium was observed. In conclusion, our results showed changes in the localization of CSPG in the basement membrane of the nephron, accompanied with HSPG, which may contribute to the pathological condition of calcium nephrolithiasis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002400050056
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  • 5
    Digitale Medien
    Digitale Medien
    The lateral corticospinal tract and spinal ventral horn in X-linked recessive spinal and bulbar muscular atrophy: a quantitative study (1996)
    Springer
    Acta neuropathologica 93 (1996), S. 1-6 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Key words X-linked recessive spinal and bulbar ; muscular atrophy ; Corticospinal tract ; Spinal ventral horn cells ; Alpha motor neuron ; Interneuron
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A quantitative study was performed on spinal cord lesions in seven patients with X-linked recessive spinal and bulbar muscular atrophy. The myelinated fiber density of the lateral corticospinal tracts at the T7 cord level was well preserved for both large and small myelinated fibers. On the other hand, neurons in the L4 ventral horn were markedly depleted; marked loss was noted of the large alpha and medium-sized gamma motor neurons located in the lateral and medial nuclei as well as the small neurons in the intermediate zones of the ventral horn. These results suggest that myelinated fiber density and fiber-size distribution in the corticospinal tract are well preserved and that neuronal loss in the ventral horns is not restricted to alpha and gamma motoneurons but also involves small interneurons.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004010050575
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  • 6
    Digitale Medien
    Digitale Medien
    Age-related changes in human spinal ventral horn cells with special reference to the loss of small neurons in the intermediate zone: a quantitative analysis (1996)
    Springer
    Acta neuropathologica 92 (1996), S. 109-114 
    Details
    ISSN: 1432-0533
    Schlagwort(e): Key words Spinal ventral horn ; Aging ; Interneuron ; Alpha motor neuron ; Morphometry
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A cytoarchitectonic study of spinal ventral horn cells was performed to identify age-related changes. The diameter distribution of ventral horn neurons of the fourth lumbar segment of the spinal cord and their size and topographical distributions were investigated in 14 autopsy cases. These cases represented patients of 18–100 years of age who had died of non-neurological diseases. The results indicate that small neurons widely distributed in the intermediate zone of the ventral horn significantly diminished with aging (P 〈 0.0005, r = –0.898), whereas medium-sized and large neurons located in the medial and lateral nuclei showed only a slight decrease with advancing age. The total number of neurons in the whole ventral horn was also noted to decrease significantly with aging (P 〈 0.0005, r = –0.899). While small neurons in the intermediate zone of the ventral horn are thought to be mostly interneurons, their physiological function still remains obscure in many respects. The findings of this study provide insight into age-related cell loss in terms of size and location.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004010050497
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