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  • Human brain  (5)
  • Astrocyte  (4)
  • Polymer and Materials Science  (4)
  • Chemical Engineering  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Vimentin immunoreactivity in normal and pathological human brain tissue (1992)
    Springer
    Acta neuropathologica 84 (1992), S. 157-162 
    Details
    ISSN: 1432-0533
    Keywords: Vimentin ; Astrocyte ; Microglia ; Macrophage ; Alzheimer's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Vimentin immunoreactivity was examined in brain tissues from non-neurological and various human central nervous system disease cases. In all brain tissues examined, vimentin immunoreactivity was intensely positive in ependymal cells and subpial tissues, and weakly positive in some capillaries and some white matter astrocytes. In affected areas of Alzheimer's disease (AD), Pick's disease, amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS) and cerebral infarction cases, numerous intensely vimentin-immunopositive astrocytes of both protoplasmic and fibrous morphology were demonstrated. A few such astrocytes were also observed in Parkinson's disease and progressive supranuclear palsy. ALS, MS and infarction brains also had numerous, strongly vimentin-positive, round and fat-laden microglia/macrophages. In AD and ALS, a few reactive microglia with irregularly enlarged shapes were vimentin positive. In AD, they were almost exclusively related to senile plaques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00311389
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  • 2
    Electronic Resource
    Electronic Resource
    Further observations on Tau-positive glia in the brains with progressive supranuclear palsy (1993)
    Springer
    Acta neuropathologica 85 (1993), S. 308-315 
    Details
    ISSN: 1432-0533
    Keywords: Progressive supranuclear palsy ; Astrocyte ; Alzheimer type I glia ; CD44 ; Dopamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The previously reported unusual, Tau-positive glia with astrocytic morphology seen in brain tissues from cases of progressive supranuclear palsy (PSP) were re-examined immunohistochemically using antibodies to CD44 and vimentin, as well as Alz-50. Four brains of PSP cases, one of whom had atypical clinical features, were examined. All four cases showed the unusual glia which were positive to Alz-50 and anti-CD44 antibodies, but negative to anti-vimentin antibody. Ultrastructurally, they had either paired nucleated or lobulated nuclei and the cytoplasm frequently contained lipofuscin pigment. The CD44 was located on the surface of the cell bodies and their processes. Such glia were most numerous in the striatum in all cases. They also appeared in the cortex and some subcortical nuclei in the three typical cases. They were not seen in the lower brain stem or cerebellum. In their morphological characteristics and regionally specific appearance, these unusual glia seemed similar to the Alzheimer type I glia which are commonly seen in hepatic encephalopathy or Wilson's disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00227727
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Astroglial localization of cholesteryl ester transfer protein in normal and Alzheimer's disease brain tissues (1995)
    Springer
    Acta neuropathologica 90 (1995), S. 633-636 
    Details
    ISSN: 1432-0533
    Keywords: Cholesteryl ester transfer protein ; Astrocyte ; Human brain ; Liver ; Apolipoprotein E
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cholesteryl ester transfer protein (CETP) is a plasma glycoprotein that facilitates the transfer of cholesteryl esters, phospholipids and triglycerides between the lipoproteins, and regulates plasma high-density lipoprotein levels. We examined CETP-like immunolabeling in non-neurological and Alzheimer's disease (AD) liver and brain tissues. The anti-CETP antibodies showed positive staining in round cells in the liver sinusoid and in brain astrocytes. In the brains of non-neurological cases, positively stained astrocytes were preferentially distributed in the white matter. In AD tissue, many reactive astrocytes in the gray matter as well as the white matter astrocytes had CETP-like immunoreactivity. CETP-positive astrocytes may play a role for AD pathology such as tissue repair.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318577
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  • 4
    Electronic Resource
    Electronic Resource
    White matter microglia produce membrane-type matrix metalloprotease, an activator of gelatinase A, in human brain tissues (1995)
    Springer
    Acta neuropathologica 90 (1995), S. 421-424 
    Details
    ISSN: 1432-0533
    Keywords: Key words Membrane-type matrix metalloprotease ; Gelatinase A ; Human brain ; Microglia ; β-Amyloid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Membrane-type matrix metalloprotease (MT-MMP) is an activator of gelatinase A (MMP-2), which has previously been found in carcinoma cells. We examined non-neurological and Alzheimer's disease brain tissues for MT-MMP by immunohistochemistry and in situ hybridization. The anti-MT-MMP antibodies gave positive staining of brain microglial cells in all the brain tissues. Positively stained microglia were found only in the white matter. The cells producing MT-MMP protein were also shown to be white matter microglia. These results provide further evidence that activated gelatinase A, which may be a processing enzyme for degradation of β-amyloid protein, may be produced in white matter microglia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00294800
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  • 5
    Electronic Resource
    Electronic Resource
    White matter microglia produce membrane-type matrix metalloprotease, an activator of gelatinase A, in human brain tissues (1995)
    Springer
    Acta neuropathologica 90 (1995), S. 421-424 
    Details
    ISSN: 1432-0533
    Keywords: Membrane-type matrix metalloprotease ; Gelatinase A ; Human brain ; Microglia ; β-Amyloid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Membrane-type matrix metalloprotease (MT-MMP) is an activator of gelatinase A (MMP-2), which has previously been found in carcinoma cells. We examined non-neurological and Alzheimer's disease brain tissues for MT-MMP by immunohistochemistry and in situ hybridization. The anti-MT-MMP antibodies gave positive staining of brain microglial cells in all the brain tissues. Positively stained microglia were found only in the white matter. The cells producing MT-MMP protein were also shown to be white matter microglia. These results provide further evidence that activated gelatinase A, which may be a processing enzyme for degradation of β-amyloid protein, may be produced in white matter microglia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00294800
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Astroglial localization of cholesteryl ester transfer protein in normal and Alzheimer's disease brain tissues (1995)
    Springer
    Acta neuropathologica 90 (1995), S. 633-636 
    Details
    ISSN: 1432-0533
    Keywords: Key words Cholesteryl ester transfer protein ; Astrocyte ; Human brain ; Liver ; Apolipoprotein E
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cholesteryl ester transfer protein (CETP) is a plasma glycoprotein that facilitates the transfer of cholesteryl esters, phospholipids and triglycerides between the lipoproteins, and regulates plasma high-density lipoprotein levels. We examined CETP-like immunolabeling in non-neurological and Alzheimer's disease (AD) liver and brain tissues. The anti-CETP antibodies showed positive staining in round cells in the liver sinusoid and in brain astrocytes. In the brains of non-neurological cases, positively stained astrocytes were preferentially distributed in the white matter. In AD tissue, many reactive astrocytes in the gray matter as well as the white matter astrocytes had CETP-like immunoreactivity. CETP-positive astrocytes may play a role for AD pathology such as tissue repair.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318577
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  • 7
    Electronic Resource
    Electronic Resource
    Expression of the membrane-type 3 matrix metalloproteinase (MT3-MMP) in human brain tissues (1998)
    Springer
    Acta neuropathologica 96 (1998), S. 347-350 
    Details
    ISSN: 1432-0533
    Keywords: Key words Membrane-type 3 matrix metalloproteinase ; Gelatinase A ; Human brain ; Microglia ; Reverse ; transcriptase-polymerase chain reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Membrane-type 3 matrix metalloproteinase (MT3-MMP) is a novel MT-MMP which has a transmembrane domain at the C terminus, and mediates activation of pro-gelatinase A, just as does MT1-MMP. Previously, we reported that MT1-MMP was expressed on microglial cells only in the white matter [Yamada T, Yoshiyama Y, Sato H, Seiki M, Shinagawa A, Takahashi M (1995) Acta Neuropathol 90 : 421–424]. In the present study of both non-neurological and Alzheimer brain tissues, we examined the localization of MT3-MMP by immunohistochemistry. Anti-MT3-MMP antibodies gave positive staining of microglial cells in all brain tissues. Positively stained microglia were found not only in the white matter but also in the gray matter. Reverse transcriptase-polymerase chain reaction for MT3-MMP mRNA showed the same amount of expression in gray and white matters, while that for gelatinase A and MT1-MMP mRNA expressed much higher in the white matter than in the gray matter. These results suggest that MT3-MMP may play a role on microglial cells, although its role may be different from MT1-MMP in the brain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050904
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  • 8
    Electronic Resource
    Electronic Resource
    Conformation of diastereomeric peptide sequences: Structural analysis of Z-D-Val-Ac6c-Gly-L-Phe-OMe (1992)
    New York : Wiley-Blackwell
    Biopolymers 32 (1992), S. 1155-1161 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: We have recently undertaken a systematic structural analysis of fully protected tetrapeptides containing at the N- and C-terminus either homo- or heterochiral amino acids, spaced by an achiral dipeptide segment. The interest for this class of peptides derives from the observation that, on reverse-phase (HPLC), the homo- and heterochiral sequences have a markedly different retention times. The diastereomeric sequences, namely Z-(L/D)-Val-X-Y-L-Phe-OMe (X = Sar, Gly, Ac3c, Aib, Ac5c, Ac6c, Deg, Dpg, Dbu, Dip, Dph; Y = Sar, Gly, Ac3c, Aib, Ac6c, Ac6c) show different overall hydrophobicity attributed to a different three-dimensional structure that also depends on the X-Y segment. Therefore, following preliminary studies in solution, we report here the detailed x-ray analysis of the tetrapeptide Z-D-Val-Ac6c-Gly-L-Phe-OMe in order to understand the structural features governing the overall hydrophobicity of linear fully protected tetrapeptides. © 1992 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360320904
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  • 9
    Electronic Resource
    Electronic Resource
    Mixed conformation in Cα,α-disubstituted tripeptides: X-ray crystal structures of Z-Aib-Dph-Gly-Ome and Bz-Dph-Dph-Gly-Ome (1994)
    New York : Wiley-Blackwell
    Biopolymers 34 (1994), S. 1595-1604 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: We report here the synthesis and molecular structure in the solid state of fully protected tripeptides containing Cα,α-diphenylglycine (Dph), namely Z-Aib-Dph-Gly-OMe (Aib: Cα,α-dimethylgrycine) and Bz-Dph-Dph-Gly-OMe. The molecular conformation around the Dph residue, containing two bulky substituents, is fully extended, while the Aib residue, containing two smaller groups on the Cα atom, adopts the typical 310/α-helical conformation. Gly residues, without substituents on the Cα atom, show different conformational preferences. Each residue seems to behave, from a conformational point of view, independently from the presence of the other residues, and thus mixed local conformations (folded and extended) are present in the crystals. The nonconventional peptide synthesis, using the Ugi reaction, is also reported. © 1994 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360341204
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  • 10
    Electronic Resource
    Electronic Resource
    Relation between characteristics and melting point of oligomers in poly(ethylene terephthalate) manufacturing (1988)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 28 (1988), S. 381-384 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The applicable range of the regression equation proposed by Yamada, et al. expressing oligomer melting point by oligomer characteristics and relations derivable from the equation correlating each oligomer characteristic and melting point were studied. It was confirmed that the equation is applicable not only to poly(ethylene terephthalate) (PET) oligomer but also to the extent of polymerization. As number-average degree of polymerization (Pn) increases, the influence of end groups on melting point becomes weak, and when Pn exceeds 50, the influence of end groups becomes negligibly small. On the other hand, when Pn is below 2, It was confirmed that the influence of end groups on melting point is very strong.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760280607
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