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Articles by H Kono
Total Records ( 2 ) for H Kono
  H Ide , E Kikuchi , H Kono , H Nagata , A Miyajima , K Nakagawa , T Ohigashi , J Nakashima and M. Oya
  Objective

The objective of this study was to evaluate the efficacy and toxicity of docetaxel in combination with prednisolone in Japanese patients with hormone refractory prostate cancer.

Methods

Twenty patients with hormone refractory prostate cancer (HRPC) were administered a treatment regimen consisting of docetaxel 75 mg/m2 once every 3 or 4 weeks and prednisolone 5 mg twice daily at our institution between 2006 and 2008.

Results

The patients received a median of 5.5 cycles of treatment (range, 2–12 cycles). Nine of the 20 patients (45%) had a ≥50% decrease in serum prostate-specific antigen (PSA). The median duration of response was 4 months (range, 1–11 months). The number of cycles performed, the presence of bone metastasis and the extent of disease had statistically significant associations with the response. Three patients had a transient PSA rise among the patients who ultimately had a response. Grade 3/4 leukopenia and neutropenia occurred in 80.0% and 85.0% of the patients, respectively. Interstitial pneumonia occurred in only one patient; however, the patient recovered. Finally, no treatment-related deaths were seen during the observation period.

Conclusions

The combination of docetaxel 75 mg/m2 every 3 weeks and prednisolone 10 mg daily was effective and well tolerated in Japanese patients with HRPC. The results of this study suggest that a decision concerning discontinuation of this treatment should be carefully considered because a transient PSA rise was observed. Although interstitial pneumonia was rare, the potential risk of its development should be taken into consideration.

  K Matsumoto , K Nakagawa , A Hashiguchi , H Kono , E Kikuchi , H Nagata , A Miyajima and M. Oya
  Objective

The diagnosis of prostate cancer is based on the results of ultrasonography-guided needle biopsy of the prostate, but cancer foci are often not visible in conventional transrectal ultrasonography. Sonazoid is a new microbubble contrast agent. The purpose of our study was to compare areas of contrast material enhancement in the prostate at ultrasonography with whole-mount radical prostatectomy specimens to determine if the use of Sonazoid improves the detection rate of prostate cancer.

Methods

Fifty patients with biopsy-proven cancer of the prostate who were scheduled to undergo radical prostatectomy were recruited for this study. The day before the operation, each patient was evaluated with ultrasonography at baseline and again during intravenous infusion of Sonazoid. A map of ultrasonography findings was created prospectively at the time of imaging. Following radical prostatectomy, independent mapping of the pathologic results was performed and the maps were compared.

Results

Ultrasonography evaluation at baseline demonstrated that at least one focus of cancer was identified in 20 of the 50 subjects (40.0%). Meanwhile at least one cancer focus was enhanced in 31 of the 50 patients (62.0%) when Sonazoid was used. The combination of baseline grayscale imaging and contrast-enhanced imaging allowed identification of at least one focus of cancer in 40 patients (80.0%). Contrast-enhanced ultrasonography can improve sensitivity, especially for the detection of large cancer, peripheral zone cancer and highly malignant cancer.

Conclusions

Our study has demonstrated significantly improved detection of prostate cancer with the combination of baseline grayscale imaging and contrast-enhanced imaging compared with conventional ultrasonography techniques only, and this technique may be applicable to targeted biopsy.

 
 
 
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