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  • 1
    Electronic Resource
    Electronic Resource
    Optical rotatory dispersion of nitrobenzene derivatives-I - o-Nitrobenzoates of secondary alcohols
    Amsterdam : Elsevier
    Tetrahedron 26 (1970), S. 725-730 
    Details
    ISSN: 0040-4020
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0040-4020(01)97867-6
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  • 2
    Electronic Resource
    Electronic Resource
    Herpes simplex virus type 1 and type 2 infection in human oral mucosa in culture (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 20 (1991), S. 0 
    Details
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To examine the sensitivity of human oral mucosa to herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2) infection, human gingival mucosa explants were infected with either HSV-1 or HSV-2 in vitro and the expression of virus specific antigen was examined by the immunofluorescent antibody technique. HSV-2 antigen was found in the basement membrane, basal cell layer and lower prickle cell layer. This finding was consistent with the HSV-1 infection. Electron microscopic study revealed the presence of nucleocapsids and enveloped virus particles in the basal cells of HSV-2-infected organ cultures. These findings indicate that human gingival mucosa is sensitive to infection with HSV-2, as well as HSV-1, and that the virus may replicate in the undifferentiated epithelial cells of mucosal epithelium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0714.1991.tb00892.x
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  • 3
    Electronic Resource
    Electronic Resource
    A latent infection of herpes simplex virus type 2 in a human neuroblastoma cell line IMR-32 (1986)
    Springer
    Archives of virology 90 (1986), S. 249-260 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Human neuroblastoma (IMR-32) cells were infected with herpes simplex virus type 2 (HSV-2) at a multiplicity of infection (MOI) of 2 plaque-forming units (PFU)/cell and were cultured at 40° C for 14 days. Then neither infectious virus particles nor virus capsids were detected in these cells whereas the presence of virus-specific antigens was observed by immunofluorescent antibody staining technique in 16.9±3.2 per cent of the infected cell population. When the cultivation temperature was shifted down from 40° C to 35° C, reactivation of virus growth occurred after lag periods of 2–9 days. These findings indicate that the IMR-32 cells can be latently infected with HSV-2 at 40° C and that virus growth may be inhibited at the level of synthesis of virus-specific macromolecules or at some step preceding nucleocapsid formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01317374
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  • 4
    Electronic Resource
    Electronic Resource
    Macromolecular synthesis at the early stage of herpes simplex virus type 2 (HSV-2) latency in a human neuroblastoma cell line IMR-32: repression of late viral polypeptide synthesis and accumulation of cellular heat-shock proteins (1987)
    Springer
    Archives of virology 96 (1987), S. 17-28 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have shown that a latent infection of herpes simplex virus type 2 (HSV-2) can be established in a human neuroblastoma cell line IMR-32 if the infected cells are cultured at 40°C. In the present study, viral polypeptides and cellular heat-shock proteins which were synthesized in HSV-2 infected IMR-32 cells cultured at 40°C were analyzed by polyacrylamide gel electrophoresis. It was found that the synthesis of late viral polypeptide ICP 5 was markedly reduced in the infected cells at 40°C as compared with those at 37°C. Although infection of IMR-32 cells with HSV-2 at 40°C resulted in shutoff of cellular protein synthesis, it was found that some cellular heat-shock proteins (90, 72 and 70 kd polypeptides) were synthesized and accumulated intracellularly. These findings suggest that modification of cascade regulation of HSV-2 polypeptide synthesis and/or accumulation of heat-shock proteins may be involved in the incomplete arrest of virus growth and in survival of the infected cells, leading to the establishment of HSV-2 latency in IMR-32 cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01310987
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  • 5
    Electronic Resource
    Electronic Resource
    Therapy for oral squamous cell carcinoma by tegafur and streptococcal agent OK-432 in combination with radiotherapy: Association of the therapeutic effect with differentiation and apoptosis in the cancer cells (1997)
    Springer
    Apoptosis 2 (1997), S. 227-238 
    Details
    ISSN: 1573-675X
    Keywords: Apoptosis ; differentiation ; OK-432 ; oral squamous cell carcinoma ; radiotherapy ; tegafur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Twenty patients with oral squamous cell carcinoma having mainly stage II or III lesions without distant metastasis, were treated with tegafur and streptococcal agent, OK-432, in combination with radiotherapy. As a consequence, 16 cases among the treated 20 cases showed complete remission by this therapy alone. Especially, we have found that the squamous cell carcinoma arising in non-keratinizing oral epithelium rather than in keratinizing oral epithelium has better response to this therapy. Among the 16 cases with complete remission (CR) by the current therapy, 10 cases were histopathologically diagnosed as well-differentiated squamous cell carcinoma and six cases as moderately differentiated squamous cell carcinoma. When we examined immunohistochemically the expres-sion of various antigens such as proliferating cell nuclear antigen (PCNA), p53 and LeY or the presence of DNA fragmentation by nick-end labelling in the biopsy materials taken at the first visit to our clinic from 20 patients treated with the current therapy, the CR group showed a significantly increased LeY expres-sion level ( p〈 0.05) and DNA fragmentation rate ( p〈 0.05) as compared with the partial response (PR, n= 3) + no change (NC, n= 1) group. On the other hand, the CR group with respect to PCNA expression level was significantly decreased as compared with the PR + NC group ( p〈 0.05). From these findings, it can be considered that the therapy for oral squamous cell carcinoma by UFT and OK-432 in combination with radiotherapy is very effective, which may be associated with differentiation or apoptosis in oral squamous carcinoma cells. In addition, we present the clinical findings and results of immunohistochemical staining for the biopsy materials obtained from four CR cases treated with the current therapeutic method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026428918301
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  • 6
    Electronic Resource
    Electronic Resource
    The treatment with differentiation- and apoptosis-inducing agent, vesnarinone, of a patient with oral squamous cell carcinoma (1997)
    Springer
    Apoptosis 2 (1997), S. 313-318 
    Details
    ISSN: 1573-675X
    Keywords: Apoptosis ; differentiation ; oral squamous cell carcinoma ; vesnarinone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A patient with histopathological recurrent oral cancer with well-differentiated squamous cell carcinoma, was treated with differentiation- and apoptosis-inducing agent, vesnarinone, per os at a dose of 180 mg/day for 56 days and then at a dose of 60 mg/day for 93 days. The vesnarinone administration caused complete remission of the tumour. It has been found by immunohistochemical staining and PCR-SSCP analysis that the recurrent tumour has wild type p53 gene and relative high level of LeY expression as well as DNA fragmentation in the cancer cells, as assessed by nick-end labelling. These findings suggest that the cure of oral squamous cell carcinoma observed in this case might be associated with induction of differentiation and apoptosis of cancer cells by vesnarinone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026493205097
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  • 7
    Electronic Resource
    Electronic Resource
    The role of epithelial cell differentiation in the expression of herpes simplex virus type 1 in normal human oral mucosa in culture (1987)
    Springer
    Archives of virology 92 (1987), S. 41-53 
    Details
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have examined by immunofluorescent antibody staining technique the expression of herpes simplex virus type 1 (HSV-1) in organ cultures of the normal human oral mucosa. The expression of HSV-1 antigen was found selectively in the epithelial cell layers in relatively undifferentiated states such as basal layer and lower prickle cell layer in addition to the basement membrane. When the epithelial cells dissociated from the oral mucosa were infected with HSV-1 and association of the HSV-1 expression with the cellular differentiation was examined, the epithelial cells containing laminin in an undifferentiated state were permissive for the expression of HSV-1 antigen whereas terminally differentiated epithelial cells with the cornified envelope did not express HSV-1 antigen. These findings indicate that the expression of HSV-1 antigen is restricted in the mucosal epithelial cells in a differentiated state, although the possibility that the cornified envelope might protect the cells from infection is not excluded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01310061
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