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  • 1
    ISSN: 1432-1920
    Keywords: Key words Developmental spinal canal stenosis ; Myelopathy ; CT myelography ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To verify the conventional concept of “developmental stenosis of the cervical spinal canal”, we performed a morphological analysis of the relations of the cervical spinal canal, dural tube and spinal cord in normal individuals. The sagittal diameter, area and circularity of the three structures, and the dispersion of each parameter, were examined on axial sections of CT myelograms of 36 normal subjects. The spinal canal was narrowest at C4, followed by C5, while the spinal cord was largest at C4/5. The area and circularity of the cervical spinal cord were not significantly correlated with any parameter of the spinal canal nor with the sagittal diameter and area of the dural tube at any level examined, and the spinal cord showed less individual variation than the bony canal. Compression of the spinal cord might be expected whenever the sagittal diameter of the spinal canal is below the lower limit of normal, that is about 12 mm on plain radiographs. Thus, we concluded that the concept of “developmental stenosis of the cervical spinal canal” was reasonable and acceptable.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Keywords: Developmental spinal canal stenosis ; Myelopathy ; CT myelography ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To verify the conventional concept of “developmental stenosis of the cervical spinal canal”, we performed a morphological analysis of the relations of the cervical spinal canal, dural tube and spinal cord in normal individuals. The sagittal diameter, area and circularity of the three structures, and the dispersion of each parameter, were examined on axial sections of CT myelograms of 36 normal subjects. The spinal canal was narrowest at C4, followed by C5, while the spinal cord was largest at C4/5. The area and circularity of the cervical spinal cord were not significantly correlated with any parameter of the spinal canal nor with the sagittal diameter and area of the dural tube at any level examined, and the spinal cord showed less individual variation than the bony canal. Compression of the spinal cord might be expected whenever the sagittal diameter of the spinal canal is below the lower limit of normal, that is about 12 mm on plain radiographs. Thus, we concluded that the concept of “developmental stenosis of the cervical spinal canal” was reasonable and acceptable.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 3
    ISSN: 1435-232X
    Keywords: Key words N-acetylglucosaminyltransferase ; Fetal brain ; Adult brain ; Heart ; Testis ; Chromosomal band 12q21
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A novel human gene determining a polypeptide product of 478 residues with an estimated molecular mass of 55 kDa, which has significant homology and structural similarity to Bos UDP-N-acetylglucosamine: α-1,3-D-mannoside β-1,4-N-acetylglucosaminyltransferase (GnT-IV), was cloned from the commonly deleted region in pancreatic cancer at 12q21. The gene is composed of at least six exons, and the last three exons cover the open reading frame. Different sized transcripts, 3.8-kb in the heart, brain, and fetal brain and 2.8-kb and 1.7-kb in the testis were observed by Northern blot analysis. By reverse transcription-polymerase chain reaction, expression was also observed in the adult brain, liver, and adrenal gland, but not in pancreas. Because of its significant homology and structural similarity to Bos GnT-IV, it is potentially the gene encoding human GnT-IV or its homologue, which had been one of two genes remaining to be cloned in the human GnT family.
    Type of Medium: Electronic Resource
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