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  • 1
    Electronic Resource
    Electronic Resource
    Supraumbilical skin rash after chemoembolization for hepatocellular carcinoma (2000)
    Springer
    European radiology 10 (2000), S. 1356-1356 
    Details
    ISSN: 1432-1084
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003309900297
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  • 2
    Electronic Resource
    Electronic Resource
    General theory of coincidence-site lattices, reduced 0-lattices and complete pattern-shift lattices in arbitrary crystals (1976)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 59-65 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The definition of a lattice and its superlattice is given algebraically. A coincidence site lattice (CSL) is defined as an intersection lattice of any two crystal lattices, and a complete pattern-shift lattice (DSCL) as the set theoretically smallest lattice containing both crystal lattices as superlattices. In the case where the two lattices are related by a non-singular matrix (having non-zero determinant), the so-called 0-lattice may be generated from the two crystal lattices. Any translation of the 0-lattice by all the vectors of one of the crystal lattices forms a lattice, i.e. a reduced 0-lattice. As a result of the theory of groups and numbers, the reduced 0-lattice (abbreviated to ROL) is homomorphic to the DSCL. It is shown that the factor group of all cosets of lattice 1 in the DSCL (in the ROL) is isomorphic with the factor group of all cosets of the CSL in lattice 2 (in the 0-lattice). The volume of a unit cell is derived for all the lattices generated by the two crystal lattices. Secondly, the reciprocal of a lattice is introduced and the reciprocity between the CSL and the DSCL determined by the reciprocals of the two crystal lattices is shown as a special case of a theorem mentioned about modules over a ring. Finally a complete diagram of relationships between b-lattices and 0-lattices for direct lattices and reciprocal lattices is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739476000119
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  • 3
    Electronic Resource
    Electronic Resource
    Regulatory Mechanisms of Corticotropin-Releasing Hormone and Vasopressin Gene Expression in the Hypothalamus (2004)
    Oxford, UK : Blackwell Science Ltd
    Journal of neuroendocrinology 16 (2004), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Tuberoinfundibular corticotropin-releasing hormone (CRH) neurones are the principal regulators of the hypothalamic-pituitary-adrenal (HPA)-axis. Vasopressin is primarily a neurohypophysial hormone, produced in magnocellular neurones of the hypothalamic paraventricular and supraoptic nuclei, but parvocellular CRH neurones also coexpress vasopressin, which acts as a second ‘releasing factor’ for adrenocorticotropic hormone along with CRH. All stress inputs converge on these hypothalamic neuroendocrine neurones, and the input signals are integrated to determine the output secretion of CRH and vasopressin. Aminergic, cholinergic, GABAergic, glutamatergic and a number of peptidergic inputs have all been implicated in the regulation of CRH/vasopressin neurones. Glucocorticoids inhibit the HPA-axis activity by negative feedback. Interleukin-1 stimulates CRH and vasopressin gene expression, and is implicated in immune-neuroendocrine regulation. cAMP-response element-binding protein phosphorylation may mediate transcriptional activation of both CRH and vasopressin genes, but the roles of AP-1 and other transcription factors remain controversial. Expression profiles of the CRH and vasopressin genes are not uniform after stress exposure, and the vasopressin gene appears to be more sensitive to glucocorticoid suppression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0953-8194.2004.01172.x
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  • 4
    Electronic Resource
    Electronic Resource
    Polyamine Regulation of the Rat Pro-Opiomelanocortin Gene Expression in AtT-20 Cells (2001)
    Oxford, UK : Blackwell Science, Ltd
    Journal of neuroendocrinology 13 (2001), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Polyamines are a ubiquitous group of amines that play diverse biological roles. In the anterior pituitary, intracellular polyamine levels are reported to show diurnal changes, although the biological significance remains to be elucidated. In this study, we examined the effects of polyamines on the transcriptional activity of the rat pro-opiomelanocortin (POMC) gene using AtT20PL, a clone of the AtT20 cell line in which an approximately 0.7 kb of the rat POMC 5′ promoter-luciferase fusion gene was stably incorporated. The results showed that three representative polyamines (putrescine, spermidine and spermine) all stimulated POMC promoter activity in a time- and dose-related manner, spermine showing the most potent effect (maximum approximate three-fold increase). This effect was not observed under treatment with actinomycin D, suggesting the effect of polyamine at the transcriptional level. On the other hand, methylglyoxal bis (guanylhydrazone), an inhibitor of polyamine synthesis, showed the opposite effect, further supporting the positive role of intracellular polyamines. Taken together, our findings suggest that polyamines are involved in the regulation of POMC gene expression (especially in terms of diurnal changes) in corticotroph cells. The precise molecular mechanisms of polyamine effects await further research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2826.2001.00691.x
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  • 5
    Electronic Resource
    Electronic Resource
    Alterations by a defect in a rice G protein α subunit in probenazole and pathogen-induced responses (2004)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 27 (2004), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The rice dwarf1 (d1) mutant, which is deficient in an α subunit (Gα) of heterotrimeric G protein, was used to obtain specific evidence on the functions of Gα protein in defence signalling in rice. Using proteome analysis, a probenazole-inducible protein (PBZ1) was detected in the cytosolic fraction of leaf blade of the wild type, but not the d1 mutant. After treatment with probenazol, PBZ1 reached maximal levels at 72 h in the wild type but 96 h in the d1 mutant. The induction of PBZ1 by probenazole treatment was inhibited by protein kinase inhibitors. A 48-kDa putative mitogen-activated protein kinase (MAPK) and a 55-kDa putative Ca2+-dependent protein kinase (CDPK) showed lower activities in the cytosolic fraction of the d1 mutant than that of the wild type. The activities of these protein kinases were enhanced at 24 h in the wild type and 48 h in the d1 mutant after probenazole treatment. Although the d1 mutant responded to the rice blast fungus similarly to the wild type, the d1 mutant developed rice blight symptoms earlier than the wild type when infected with Xoo. In addition, the blight symptoms were more severe on the mutant than on the wild type, and wilting was frequently observed in the d1 mutant. Furthermore, induction by the bacterial infection of the 48-kDa putative MAPK and PBZ1 was delayed by 2 and 4 d, respectively, in the d1 mutant compared with the wild type. These results indicate that the Gα protein plays a role in the induction of PBZ1 and protein kinases by probenazole and Xoo, and suggest that the 48-kDa putative MAPK may be involved in a signalling pathway for resistance to bacterial infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.2004.01202.x
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  • 6
    Electronic Resource
    Electronic Resource
    Sporadic bovine meningo-encephalitis-isolation of a paramyxovirus (1975)
    Springer
    Archives of virology 48 (1975), S. 107-120 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Isolation of a viral agent (107) directly from brain explants of a 15-month-old heifer with symptoms of a sporadic encephalomyelitis is described. The virus shares properties with the paramyxovirus family. It grows in a variety of cell cultures from different species, and induces nuclear and cytoplasmic inclusion bodies in infected cells. Nucleocapsids measuring 17 nm in diameter were found in the nucleus and cytoplasm of these cells when studied electron microscopically, thus indicating a close relationship of the agent to the measles-distemper-rinderpest group. No infectious virus was released from infected cells, although alignment of nucleocapsids was observed beneath the cell membrane, and no hemagglutinating activity could be detected with the methods employed. The 107 agent was compared serologically with parainfluenza viruses type 1, 2 and 3, simian virus 5, mumps and Newcastle disease virus (NDV), two bovine respiratory syncytial viruses and measles/subacute sclerosing panencephalitis, distemper and rinderpest viruses, always using 107 virus infected CV1 cells and antiserum of the different viruses in indirect FA tests. Positive FA reactions were observed only with two sera obtained from SSPE patients with high antibody titer to SSPE virus, and with one rabbit-anti-rinderpest serum. The titers of these sera to 107 virus, however, were significantly lower than those against homologous viruses. Five out of 9 sera from randomly selected healthy cattle showed antibody titers between 1:10 and 1:80 to 107 virus in FA tests. The significance of these results is discussed with respect to the epidemiology of SSPE in children and its possible implication with rinderpest in Europe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01318144
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  • 7
    Electronic Resource
    Electronic Resource
    Transfer of internal carotid artery thrombus to the external carotid artery using a balloon microcatheter (2000)
    Springer
    Neuroradiology 42 (2000), S. 775-777 
    Details
    ISSN: 1432-1920
    Keywords: Key words Embolectomy ; Thrombolysis ; Cerebral infarction ; Fibrinolysis, local intra-arterial ; Artery, internal carotid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a case of acute occlusion of the left internal carotid artery successfully treated by withdrawing a large clot into the external carotid artery using a balloon microcatheter and urokinase. This technique may not only reduce the amount of thrombolytic agent required but also lower the incidence of haemorrhagic transformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000333
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  • 8
    Electronic Resource
    Electronic Resource
    MRI at 1.5 T of intramedullary ependymoma and classification of pattern of contrast enhancement (2000)
    Springer
    Neuroradiology 42 (2000), S. 828-832 
    Details
    ISSN: 1432-1920
    Keywords: Key words Spinal cord ; neoplasms ; Ependymoma ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We retrospectively reviewed the MRI findings in 28 patients with an intramedullary spinal cord ependymoma who underwent surgical treatment. There were 26 tumours in the cervical and two in the thoracic spine. T1- and T2-weighted and contrast-enhanced images at 1.5 T were obtained in all cases. T1-weighted imaging showed solid tumour as isointense in 13 patients, high-signal in ten and low signal in five. In contrast, T2-weighted imaging showed all tumours as high signal. Contrast enhancement was heterogeneous 13 patients, homogeneous 10, heterogeneous with cyst wall enhancement in three, and a nodule on a cyst wall was seen in two. Cases with these latter patterns require careful differential diagnosis from astrocytoma or haemangioblastoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000386
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  • 9
    Electronic Resource
    Electronic Resource
    Factors in neurological deterioration and role of surgical treatment in lumbosacral spinal lipoma (2000)
    Springer
    Child's nervous system 16 (2000), S. 143-149 
    Details
    ISSN: 1433-0350
    Keywords: Key words Lumbosacral spinal lipoma ; Occult spinal dysraphism ; Surgical treatment ; Tethered cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The purpose of this study was to determine factors that might be involved in neurological deterioration and the role of surgical treatment in patients with lumbosacral spinal lipoma. Pre- and postoperative courses of 34 patients were retrospectively analyzed. The age at surgery ranged from 1 month to 47 years. The records of preoperative neurological status indicated that older patients had more severe deficits, while all 8 asymptomatic patients were under 5 years of age. Motor deficits were noted in 9 patients, in 7 of whom the lipoma extended cranially beyond the L5 level. Transitional-type lipomas were accompanied by more severe deficits (asymptomatic 1, symptomatic 17) than other types (asymptomatic 7, symptomatic 9). Postoperative follow-up periods ranged from 5 months to 13 years. During these periods, 7 of the 8 asymptomatic patients remained neurologically intact. Nine of the 26 symptomatic patients improved. Age, extension of the lipoma in the spinal canal and type of lipoma will influence the preoperative neurological status of the patients. Early untethering surgery is recommended in patients with large lipomas extending beyond the L5 level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003810050481
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