Motoki Matsuura

Sapporo Medical University, Sapporo, Hokkaidō, Japan

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Publications (12)13 Total impact

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    ABSTRACT: Abstract The purpose of this study was to investigate whether apparent diffusion coefficient (ADC) mean values can be used for predicting the treatment response in ovarian endometrial cyst patients with dienogest (DNG) administration. Eighteen patients received DNG (2 mg/day, orally) for 60 days, among whom 26 ovarian endometrial cysts were retrospectively identified. Mean ADC values of individual ovarian endometrial cysts were obtained by ADC maps inside the tumor. There was a significant correlation between ADC values and reduction ratio. When calculating the mean ADC values for three groups; more than 50%, 50-25% and less than 25%, ADC values significantly increased with increasing reduction ratio; 2.05 × 10(-3 )mm(2)/s, 1.28 × 10(-3 )mm(2)/s and 0.94 × 10(-3 )mm(2)/s, respectively (p = 0.0180). Multiple regression analysis by reduction ratio (%), ADC mean values (×10(-3 )mm(2)/s), tumor longest diameter (cm) and CA125 (U/ml) revealed that tumor reduction ratio by DNG administration could be predicted by the following equation; R = 19.3 + 24.0x - 0.4y + 0.1z (R: Reduction ratio, x: ADC mean, y: Longest diameter, z: CA125). In conclusion, the ADC mean value is useful for the prediction of the treatment response in ovarian endometrial cyst patients with DNG administration.
    Gynecological Endocrinology 05/2014; · 1.14 Impact Factor
  • Open Journal of Obstetrics and Gynecology 01/2014; 04(10):617-620.
  • The Journal of the Japanese Society of Clinical Cytology. 01/2014; 53(2):120-125.
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    ABSTRACT: Introduction: Vaginal adenosis is one of the rare dis-eases of the vagina, and almost all patients are as-ymptomatic. We report a case of spontaneous vaginal adenosis, which caused vesicovaginal fistula. Case Presentation: Our patient was a 25-year-old Japanese woman. She was admitted to our hospital, and her chief complaint was continuous urine flow from the vagina. We found a tumor with a vesicovaginal fistula in her vagina. Subsequent cytological analysis of vaginal smears showed a normal vaginal mucosa. The patient underwent tumor resection and a fistula patch. Pathological diagnosis was adenosis of the vagina, even though the patient had no known history of in-trauterine diethylstilbestrol exposure or Müllerian developmental abnormalities. Conclusion: The clini-cal course of our case was a malignant tumor, which invasively bored a hole in the vaginal wall forming a vesicovaginal fistula, even though it was a benign le-sion. Therefore, overzealous treatment should be avoided in this case.
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    ABSTRACT: Combination of anticancer drugs may provide a rational molecular basis for novel chemotherapeutic strategies. Paclitaxel and SN-38 (an active metabolite of CPT-11) are effective for many kinds of cancer. Therefore, we investigated the possibility that combination of these drugs could be effective against cervical adenocarcinoma cells. In this study, we examined cell growth inhibition after 96 h using the MTT assay and examined the release of fragmented DNA into the cytoplasm during apoptotic cell death by PI staining. Single and combined use of paclitaxel and SN-38 produced significant cytolethality against the cervical adenocarcinoma cell line CAC-1. Addition of a low concentration of SN-38 reduced the IC50 value of paclitaxel compared to that without SN-38, although the low concentration of paclitaxel did not enhance the cytotoxicity of SN-38. FACS scan analysis suggested that these drugs induced apoptosis and cell cycle arrest, and that caspase-3 and -7 were activated in the process. MTT assay and the IC50 demonstrated that paclitaxel had strong cytotoxicity against CAC-1 as well as other cancer cells. In this study, though only a single cell line was used for the experiment and the data are limited, our results suggest that paclitaxel together with low-dose CPT-11 is a promising basis for a new combination cancer chemotherapy.
    Medical Molecular Morphology 03/2013; 47(1). · 1.07 Impact Factor
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    ABSTRACT: The aim of the study was to evaluate disease persistence after conization of CIN3 and microinvasive cervical carcinoma. Medical records from a total of 231 patients were reviewed. The prevalence of CIN3 and cervical carcinoma diagnosed by means of conization were analyzed. All conizations were performed under lumbar anesthesia using a laser technique. Of the 231 patients, 25 had margin involvement with CIN3 or microinvasive carcinoma. Among these 25 patients, 10 underwent hysterectomy. Two of these 10 patients had CIN3 and eight had microinvasive carcinoma. Residual disease was observed in hysterectomy specimens from 9 of the 10 patients. Of the eight patients diagnosed with microinvasion from post-cone hysterectomy specimens, four had CIN3 and three had microinvasive carcinoma. The three patients with microinvasion were found to have a larger area of residual disease as compared with other patients with margin involvement. Conization alone seems to be a reasonable treatment for patients with CIN1, 2, 3, and microinvasive carcinoma. For adenocarcinoma, in situ treatment with conization alone is possible but requires careful follow-up. Hysterectomy appears to be a safe treatment option for microinvasive adenocarcinoma, although follow-up by cytology is sometimes possible in cases with negative surgical margins.
    Archives of Gynecology 06/2011; 285(2):453-7. · 1.28 Impact Factor
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    ABSTRACT: Poor prognosis in ovarian clear cell carcinoma is associated with the expression of a defined set of proteins including osteopontin (OPN) and integrin. Statins, a family of 3-hydroxy-3-methylglutaryl CoA reductase inhibitors, are currently being investigated for the treatment and prevention of cancer. In this study, we investigated the effects of simvastatin on ovarian clear cell carcinoma (OCCC) cells in vitro and in vivo and elucidated the mechanism of drug action. Changes in OPN gene expression were determined by real-time RT-PCR, and an MTT assay was performed to determine effects on cell proliferation. Finally, a xenograft tumor model was constructed to evaluate the effects of simvastatin on cell proliferation and apoptosis in vivo. According to our experimental results, OPN is an important protein in OCCC. Simvastatin inhibited OCCC cell proliferation, and the inhibition rate was approximately 40% to 50% after treatment with 10 µM simvastatin for 48 h. In the xenograft studies, simvastatin treatment resulted in a significant growth inhibition. Furthermore, the mice treated with simvastatin survived significantly longer compared to the control groups. In conclusion, simvastatin has anticancer effects in vitro and in vivo. Further confirmation of the anticancer effects of statins in future studies will increase the scope for OCCC treatment.
    Oncology Reports 01/2011; 25(1):41-7. · 2.19 Impact Factor
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    Motoki Matsuura, Takahiro Suzuki, Tsuyoshi Saito
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    ABSTRACT: Recent studies have demonstrated overexpression of osteopontin (OPN) in ovarian clear cell carcinoma. Here, we revealed the role of OPN in invasiveness in ovarian clear cell carcinoma. We used immunofluorescence analysis to detect OPN in a total of 160 patient-derived specimens. Ovarian clear cell carcinoma cell lines, RMG-1 and TOV-21G, were used to monitor changes in OPN and integrin levels, and cell invasiveness following treatment with OPN, simvastatin, and transfection with siRNA. Immunofluorescence analysis revealed statistically significant differences among the histological groups, and ovarian clear cell carcinoma expressed a strong OPN signal. The OPN receptors, alpha v and 5, and beta 1 and 3 integrins, were increased after treatment with OPN. Invasion assays indicated that OPN enhanced in vitro extracellular matrix invasion dose-dependently in ovarian clear cell carcinoma. Simvastatin significantly reduced expression of OPN and the integrins, and decreased ECM invasion. RNA interference also suppressed ECM invasion. These results suggest that down- or up-regulation of OPN is involved in carcinoma cell invasion. We thus conclude that OPN regulation could have a crucial role in ovarian clear cell carcinoma therapy.
    Cancer Science 08/2010; 101(8):1828-33. · 3.53 Impact Factor
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    ABSTRACT: To evaluate usefulness of uterine cervical and endometrial cytology for detecting ovarian cancer and predicting histologic type. Retrospective analysis was performed on uterine cervical and endometrial cytology data on 163 patients with ovarian cancer. Cervical and endometrial abnormalities were detected in 10 and 19 of the patients evaluated. Patients whose cervical and endometrial cytology revealed abnormal cells were classified as having ovarian cancer at International Federation of Gynecology and Obstetrics (FIGO) stages III and IV Peritoneal cytology proved positive in many of the patients with abnormal findings on uterine cytologic analysis. Of the 19 patients with positive uterine cytologic findings, 12 had recurrence of ovarian cancer after radical therapies. Lymph node metastases were detected in 9 of 19 patients. Our findings indicated that it is possible to predict histologic type in ovarian cancer in 90% of cases of positive cervical smears and 79% ofabnormal endometrial smears. Our study showed that most of the ovarian cancer cases that had abnormalities in uterine cervical and endometrial cytologic tests exhibited progression of disease. As a consequence, our findings indicate that it is possible to predict development of ovarian cancer and its histologic type using cytology screening.
    Acta cytologica 01/2010; 54(4):575-81. · 1.56 Impact Factor
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    ABSTRACT: Treatment of placenta increta often entails abdominal total hysterectomy. We present a case of placenta increta in which 3-dimensional computed tomography shows very high blood flow to the placenta, even after chemotherapy with methotrexate. Nonetheless, we were able to remove the region of the uterus that had been invaded by chorionic villi. Massive bleeding during the operation was prevented by ligation of the hypogastric artery and local injection of vasopressin. The combination of chemotherapy and partial resection of the uterus is quite a unique treatment for placenta increta patients. This approach enabled preservation of the uterus and the patient's fertility. We suggest this procedure could be one of the treatments for patients who have placenta increta and wish to retain their fertility.
    Gynecologic and Obstetric Investigation 11/2009; 69(2):112-5. · 1.10 Impact Factor
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    ABSTRACT: Treatment with opioid analgesics often causes adverse reactions that may make continuous use of such drugs difficult. We investigated the efficacy and safety of controlled-release oxycodone in the treatment of gynecologic cancer pain. The patients included 14 with cervical cancer, 6 with corpus cancer, and 17 with ovarian cancer. Treatment with controlled-release oxycodone was started at 5 mg/dose when pain control using nonsteroidal anti-inflammatory drugs became ineffective. The dose was titrated to the optimal level over a mean duration of 2.34 +/- 1.13 days, and the initially optimal dose was 18.92 +/- 5.23 mg/day. Although no patients experienced confusion, vomiting, or respiratory depression, 17 patients experienced adverse events, including constipation in 14 patients and nausea in 9 patients. The incidence of nausea was low in patients receiving oxycodone and prochlorperazine. In the present study, patients with moderate to severe pain caused by gynecologic cancer could successfully be treated with controlled-release oxycodone.
    American Journal of Therapeutics 01/2008; 15(1):31-5. · 1.13 Impact Factor