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  • differentiation  (2)
  • drug interaction  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Renal clearance of lomefloxacin is decreased by furosemide (1994)
    Springer
    European journal of clinical pharmacology 46 (1994), S. 267-269 
    Details
    ISSN: 1432-1041
    Keywords: Lomefloxacin ; Furosemide ; Renal clearance ; drug interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract The interaction between lomefloxacin, a new quinolone, and furosemide, a loop diuretic, has been examined. Oral lomefloxacin 200 mg and furosemide 40 mg were given together or separately to 8 healthy subjects, and blood and urine samples were obtained over the following 12 h. The plasma concentrations of lomefloxacin following coadministration with furosemide were higher than after lomefloxacin alone and its AUC was increased, and its total and renal clearances were decreased. No change in the pharmacokinetics of furosemide was found after coadministration of lomefloxacin. As quinolones and furosemide are reported to be excreted in urine by the renal tubular anion transport system, the present results suggest that the renal tubular secretion of lomefloxacin is diminished by furosemide. It is not clear whether this pharmacokinetic interaction might be clinically important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00192560
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  • 2
    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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  • 3
    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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  • 4
    Electronic Resource
    Electronic Resource
    Effect of ranitidine on renal clearance of lomefloxacin (1996)
    Springer
    European journal of clinical pharmacology 51 (1996), S. 95-98 
    Details
    ISSN: 1432-1041
    Keywords: Key words Lomefloxacin ; Ranitidine; renal clearance ; drug interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: To examine the effect of ranitidine on the renal clearance of lomefloxacin. Setting: Department of Clinical Pharmacology, Jichi Medical School. Methods: Lomefloxacin 200 mg and ranitidine 300 mg or its placebo were given orally in a randomised, double-blind, crossover design. Blood and urine samples were obtained during a 24-h period after dosing. Results: The area under the plasma concentration-time curve and the elimination half-life of lomefloxacin were significantly increased following coadministration with ranitidine. These effects were caused by significant decreases in total (7.8%) and renal (22%) clearance of lomefloxacin. In contrast, creatinine clearance and urinary excretion of electrolytes were not influenced by ranitidine. Conclusion: As lomefloxacin and ranitidine are excreted in urine by renal tubular secretion, the present results suggest that the renal tubular secretion of lomefloxacin is diminished by ranitidine. As the reduction in lomefloxacin clearance is only marginal, it is probable that the drug interaction observed in this study is not of clinical significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050167
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