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Shu Yazaki,Yuki Kojima,Hiroshi Yoshida,Shigemasa Takamizawa,Rui Kitadai,Tadaaki Nishikawa,Tatsunori Shimoi,Kazuki Sudo,Ayumi Saito,Hitomi Sumiyoshi Okuma,Maki Tanioka,Emi Noguchi,Masaya Uno,Mitsuya Is 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.6
Objective: Folate receptor α (FRα) is a membrane protein expressed in various solid tumors but has limited expression in normal cells. Therefore, FRα is an attractive target for cancer treatment. This study aimed to investigate the relationship between FRα expression and the clinicopathological characteristics and survivals of cervical cancer. Methods: This retrospective study included patients with cervical cancer who underwent primary surgery between 2000 and 2020 at our institution. Immunohistochemical staining of FRα was performed using an anti-folate-binding protein/FBP antibody. FRα-positive staining was defined as ≥5% of tumor staining and FRα-high as ≥50% tumor staining with ≥2+ intensity. The association between FRα expression and survival was assessed using multivariate Cox regression analysis, adjusting for established prognostic factors. Results: Overall, 123 patients were identified, and 140 tumor samples, including 17 paired primary and metastatic samples, were evaluated. As histological types, 67 patients had squamous cell carcinoma (SCC), and 56 patients had non-SCC. All primary tumors were FRα-positive. High FRα expression was observed in 25% of the cases and differed according to histology (SCC vs. non-SCC, 14.9% vs. 37.5%, p=0.004). FRα expression was significantly higher in metastatic tumors than in primary (170 [IQR, 140–205] vs. 125 [IQR, 110–150], p=0.0006). High FRα expression was significantly associated with worse overall survival (hazard ratio, 6.73; 95% confidence interval, 2.21–20.53; p=0.001). Conclusion: In cervical cancer, FRα expression was elevated in metastatic tumors and high expression was associated with a worse prognosis. Our study supports the development of FRα-targeted therapy for advanced cervical cancer.
Portable Life Support System Using Wearable Biosensor Worn by the Elderly
Syunji Yazaki,Toshio Matsunaga 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
We describe the development of a portable life support system called the Abnormal Condition Detection System(ACDS) involving the use of a wireless wearable biosensor that can be used to simultaneously observe triaxial acceleration, ECGs, and the temperature at the surface of the body. A prototype ACDS previously implemented by us and has been described in some papers. This prototype system can detect falls and abnormal heart rates as abnormal conditions. We implemented a new feature that displays the intensity of exercise to the user to encourage the use of the system even under normal conditions. We then implemented the new method for detecting falls and comparedit with the previous version. We found that the new method could achieve a detection rate of 93.9% with a missed alarm rate of 7.9%.
( Yu Tien Wang ),( Etsuro Yazaki ),( Daniel Sifrim ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2012 Journal of Neurogastroenterology and Motility (JNM Vol.18 No.4
The development of the high-resolution esophageal manometry (HRM) and the Chicago classification have improved the diagnosis and management of esophageal motility disorders. However, some conditions have yet to be addressed by this classification. This review describes findings in HRM which are not included in the current Chicago classification based on the experience in our center. This includes the analysis of the upper esophageal sphincter, proximal esophagus, longitudinal muscle contraction, disorders related to gastroesophageal reflux disease and respiratory symptoms. The utility of provocative tests and the use of HRM in the evaluation of rumination syndrome and post-surgical patients will also be discussed. We believe that characterization of the manometric findings in these areas will eventually lead to incorporation of new criteria into the existing classification. (J Neurogastroenterol Motil 2012,18:365-372)
( Nikolaos Koukias ),( Philip Woodland ),( Etsuro Yazaki ),( Daniel Sifrim ) 대한소화기기능성질환·운동학회 2015 Journal of Neurogastroenterology and Motility (JNM Vol.21 No.3
Background/Aims: Supragastric belching (SGB) is a phenomenon during which air is sucked into the esophagus and then rapidly expelled through the mouth. Patients often complain of severely impaired quality of life. Our objective was to establish the prevalence of excessive SGB within a high-volume gastrointestinal physiology unit, and evaluate its association with symptoms, esophageal motility and gastresophageal reflux disease. Methods: We established normal values for SGB by analyzing 24-hour pH-impedance in 40 healthy asymptomatic volunteers. We searched 2950 consecutive patient reports from our upper GI Physiology Unit (from 2010-2013) for SGB. Symptoms were recorded by a standardized questionnaire evaluating for reflux, dysphagia, and dyspepsia symptoms. We reviewed the predom - inant symptoms, 24-hour pH-impedance and high-resolution esophageal manometry results. Results: Excessive SGB was defined as > 13 per 24 hours. We identified 100 patients with excessive SGB. Ninety-five percent of these patients suffered from typical reflux symptoms, 86% reported excessive belching, and 65% reported dysphagia. Forty-one percent of patients with excessive SGB had pathological acid reflux. Compared to the patients with normal acid exposure these patients trended towards a higher number of SGB episodes. Forty-four percent of patients had esophageal hypomotility. Patients with hypomotility had a significantly higher frequency of SGB compared to those with normal motility (118.3 ± 106.1 vs 80.6 ± 75.7, P = 0.020). Conclusions: Increased belching is rarely a symptom in isolation. Pathological acid exposure and hypomotility are associated with more SGB frequency. Whether SGB is a disordered response to other esophageal symptoms or their cause is unclear. (J Neurogastroenterol Motil 2015;21:398-403)