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Taguchi, Satoru,Fukuhara, Hiroshi,Kakutani, Shigenori,Takeshima, Yuta,Miyazaki, Hideyo,Suzuki, Motofumi,Fujimura, Tetsuya,Nakagawa, Tohru,Igawa, Yasuhiko,Kume, Haruki,Homma, Yukio Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.24
Background: Adjuvant androgen deprivation therapy (ADT) is a treatment option for prostate cancer (PC) patients after radical prostatectomy (RP). Although it can achieve a good progression-free survival rate, some patients still develop clinical metastasis. We here investigated risk factors of clinical metastasis in post-prostatectomy patients who received immediate adjuvant ADT. Materials and Methods: We identified 197 patients with non-metastatic PC who underwent RP at our institution between 2000 and 2012, followed by adjuvant ADT. The associations of various clinicopathologic factors with clinical metastasis (primary endpoint) and cancer-specific survival (secondary endpoint) were assessed. Multivariate analysis was conducted using a Cox proportional hazards model. Median follow-up was 87 months after RP. Results: Nine (4.6%) patients developed clinical metastasis and six (3.0%) died from PC. Eight of nine metastatic patients had a pathologic Gleason score (GS) 9 and developed bone metastasis, while the remaining one had pathologic GS 7 and developed metastasis only to para-aortic lymph nodes. On multivariate analyses, pathologic GS ${\geq}9$ and regional lymph node metastasis (pN1) were independent predictors of clinical metastasis and pathologic GS ${\geq}9$ was an independent predictor of cancer-specific death. Conclusions: Pathologic GS ${\geq}9$ and pN1 were independent predictors of clinical metastasis in post-prostatectomy patients who received immediate adjuvant ADT. Furthermore, pathologic GS ${\geq}9$ was an indispensable condition for bone metastasis, which may imply that patients with GS ${\leq}8$ on adjuvant ADT are unlikely to develop bone metastasis.
Ichida, Miho,Kataoka, Akemi,Tsushima, Ruriko,Taguchi, Tetsuya Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Background: Low-dose oral contraceptives (OC) were approved by the Japanese Ministry of Health, Labor and Welfare in 1999, yet despite their contraceptive and non-contraceptive health benefits, only 5% of the target population use them. Fear of increased cancer risk, particularly breast cancer, is one reason for this. Due to low OC uptake and low screening participation, a paucity of data is available on the risk of OC use and breast cancer in Japanese women. The present study investigated OC use and breast cancer risk, as well as menstrual, reproductive and family factors. Materials and Methods: This was a clinic-based case-control study of women aged 20-69yrs who had undergone breast screening between January 2007 and December 2013 in central Tokyo. In all, 28.8% of the participants had experience with OC use. Cases were 155 women with a pathologically confirmed diagnosis of breast cancer. Controls were the remaining 12,333 women. Results: Increased age was a significant risk factor for breast cancer (p<0.001). A lower risk was found in premenopausal women presently taking OC compared to never users (OR 0.45; 95% CI 0.22-0.90) after adjusting for age, parity and breast feeding, and a family history of breast cancer. Conclusions: Increased age rather than OC use had a greater effect on breast cancer risk. This risk may be decreased in premenopausal women with OC use, but further long-term prospective studies are necessary.
Research on the Compensation Method for the Measurement Error of Cycloidal Gear Tooth Flank
Suping Fang,Yongsheng Liu,Huiyi Wang,Tetsuya Taguchi,Ryohei Takeda 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
In the precision measurement of the tooth flank of cycloidal gear, there are many reasons that affect the measurement accuracy. Amongthe reasons, the alignment angle error of the gear axis play an important role in the measurement results of the profile and tooth tracedeviations of the tooth flank. According to the measurement theory of the cycloidal gear, the mathematics model of the tooth flankis established. Based on the measurement process of the profile and tooth trace deviations by the gear measuring machine, acompensation method for the alignment angle error of the gear axis that included in the measurement results is designed. Somesimulation experiments were done to verify the proposed method. Experimental results show that after compensation, the alignmentangle error of the gear axis reduces significantly, more than 80% of the alignment angle error in profile deviation and more than 74%of the alignment angle error in tooth trace deviation is compensated by the method. The proposed method is helpful to improve themeasurement accuracy of the cycloidal gear.
Yoshihiro Sowa,Toshiaki Numajiri,Katsuhiko Nakatsukasa,Koichi Sakaguchi,Tetsuya Taguchi 대한외과학회 2017 Annals of Surgical Treatment and Research(ASRT) Vol.93 No.3
Purpose: The pedicled, descending-branch muscle-sparing latissimus dorsi (MSLD) flap has been widely used for breast reconstruction following total mastectomy. However, the superiority of the MSLD flap compared to the conventional latissimus dorsi (CLD) flap in preventing seroma formation has not been demonstrated. This study compares the morbidities related to seroma formation following pedicled MSLD flap and CLD flap breast reconstruction. Methods: A total of 15 women who underwent partial mastectomy and immediate partial breast reconstruction with MSLD flaps were compared with 15 women under identical conditions with CLD flap breast reconstruction. The medical records were reviewed for both complications and demographic data. The authors compared morbidity, including donor-site seroma, total volume of drain discharge, indwelling period of drainage, and length of hospital stay following both MSLD flap and CLD flap breast reconstruction. Results: The demographic data of the 2 groups were not significantly different. Donor-site seroma occurred in 2 MSLD patients (13.3%) and in 6 CLD patients (40.0%). The total volume of the drain discharge and the indwelling period of drainage at donor site were significantly lower in the MSLD group. The length of hospital stay was significantly shorter (by approximately a day and a half) for the MSLD group. Conclusion: The MSLD flap, with its low complication rate and associated minimal functional and aesthetic deficits at the donor site, may be a useful option for small breast reconstruction if earlier discharge from hospital is demanded.
( Yasunori Yamamoto ),( Shinya Furukawa ),( Teruki Miyake ),( Junichi Watanabe ),( Yukihiro Nakamura ),( Yoshihiro Taguchi ),( Tetsuya Yamamoto ),( Aki Kato ),( Katsunori Kusumoto ),( Osamu Yoshida ) 대한소화기기능성질환·운동학회 2024 Journal of Neurogastroenterology and Motility (JNM Vol.30 No.2
Background/Aims Although certain allergic diseases have been reported to be associated with the prevalence of functional dyspepsia (FD) and irritable bowel syndrome (IBS), it is unclear whether the presence of multiple allergic diseases further increases the prevalence of FD and IBS. The aim of this study is to determine this issue in young people. Methods A cohort of 8923 Japanese university students was enrolled and diagnoses of FD and IBS were confirmed using Rome III criteria. Allergic disorders diagnosed at medical institutions were obtained by means of a self-administered questionnaire. Results The prevalence of FD, IBS, and their overlap was found to be 1.9%, 6.5%, and 1.1%, respectively. Pollen allergy was independently positively correlated with FD, IBS, and overlap of FD and IBS. Allergic rhinitis was positively linked to IBS. Drug allergy was positively associated with FD. The presence of multiple allergic diseases was positively correlated with FD and IBS (FD: adjusted OR for 2 allergic diseases: 1.95 [95% CI, 1.24-2.98], P for trend = 0.003; and IBS: adjusted OR for 1 allergic disease: 1.40 [95% CI, 1.15- 1.69], 2 allergic diseases 1.47 [95% CI, 1.12-1.91], and 3 or more allergic diseases: 2.22 [95% CI, 1.45-3.28], P for trend = 0.001). Additionally, the concomitant existence of multiple allergic diseases was also demonstrated to have a trend that correlated with the overlap of FD and IBS (P for trend = 0.018). Conclusion Allergic disease multimorbidity is positively correlated with the prevalence of FD and IBS in a young population. (J Neurogastroenterol Motil 2024;30:229-235)