1.The changes of Silent Period before and after training of standing on balance-mat
Sakiko Ito ; Hiroki Funasaki ; Hiroteru Hayashi ; Kentaro Kawai ; Yasuhide Nakayama
Japanese Journal of Physical Fitness and Sports Medicine 2012;61(4):415-419
The purpose of this study was to evaluate the changes of pre-motion time (PMT), pre-motion silent period (PMSP), and switching silent period (SSP) before and after the training using balance-mat. Twenty healthy people aged 21-36 years old (average 26.5 years old) were subjected to a series of experiment. These were randomly divided into two groups (10 subjects each), control and balance-mat group. Activities of M. Soleus and M. Tibialis anterior were recorded by electromyogram (EMG) for the duration subjects were tried to raise their both heels as quick respond to a flashing lamp. Intervention consisted of 3minutes standing on the floor in control group, and 3 minutes standing on the balance-mat in balance-mat group. Then EMG was recorded as the same manner after the intervention in each group. There was no statistical difference of duration of PMSP and SSP between the two groups before intervention. On the other hand, those in balance-mat group were significantly shorter than those in control group after intervention. In addition, in balance-mat group, duration of PMSP and SSP after intervention were significantly shorter than that before intervention. There was no statistical difference of PMT between before and after the intervention. These results suggested balance-mat training was effective for shorten the duration of SSP and PMSP, that lead to control the posture function.
2.The role of the CNOT1 subunit of the CCR4-NOT complex in mRNA deadenylation and cell viability.
Kentaro ITO ; Akinori TAKAHASHI ; Masahiro MORITA ; Toru SUZUKI ; Tadashi YAMAMOTO
Protein & Cell 2011;2(9):755-763
The human CCR4-NOT deadenylase complex consists of at least nine enzymatic and non-enzymatic subunits. Accumulating evidence suggests that the non-enzymatic subunits are involved in the regulation of mRNA deadenylation, although their precise roles remain to be established. In this study, we addressed the function of the CNOT1 subunit by depleting its expression in HeLa cells. Flow cytometric analysis revealed that the sub G(1) fraction was increased in CNOT1-depleted cells. Virtually, the same level of the sub G1 fraction was seen when cells were treated with a mixture of siRNAs targeted against all enzymatic subunits, suggesting that CNOT1 depletion induces apoptosis by destroying the CCR4-NOT-associated deadenylase activity. Further analysis revealed that CNOT1 depletion leads to a reduction in the amount of other CCR4-NOT subunits. Importantly, the specific activity of the CNOT6L immunoprecipitates-associated deadenylase from CNOT1-depleted cells was less than that from control cells. The formation of P-bodies, where mRNA decay is reported to take place, was largely suppressed in CNOT1-depleted cells. Therefore, CNOT1 has an important role in exhibiting enzymatic activity of the CCR4-NOT complex, and thus is critical in control of mRNA deadenylation and mRNA decay. We further showed that CNOT1 depletion enhanced CHOP mRNA levels and activated caspase-4, which is associated with endoplasmic reticulum ER stress-induced apoptosis. Taken together, CNOT1 depletion structurally and functionally deteriorates the CCR4-NOTcomplex and induces stabilization of mRNAs, which results in the increment of translation causing ER stress-mediated apoptosis. We conclude that CNOT1 contributes to cell viability by securing the activity of the CCR4-NOT deadenylase.
Apoptosis
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Caspases, Initiator
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genetics
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metabolism
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Cell Survival
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Endoplasmic Reticulum
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enzymology
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Enzyme Activation
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Flow Cytometry
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HEK293 Cells
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HeLa Cells
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Humans
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Protein Subunits
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genetics
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metabolism
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RNA Stability
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RNA, Messenger
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analysis
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RNA, Small Interfering
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genetics
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metabolism
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Ribonucleases
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metabolism
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Stress, Physiological
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Transcription Factor CHOP
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genetics
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metabolism
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Transcription Factors
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genetics
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metabolism
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Transfection
3.Clinicopathologic features, treatment, prognosis and prognostic factors of neuroendocrine carcinoma of the endometrium: a retrospective analysis of 42 cases from the Kansai Clinical Oncology Group/Intergroup study in Japan
Harunobu MATSUMOTO ; Mototsugu SHIMOKAWA ; Kaei NASU ; Ayumi SHIKAMA ; Takaya SHIOZAKI ; Masayuki FUTAGAMI ; Kentaro KAI ; Hiroaki NAGANO ; Taisuke MORI ; Mitsutake YANO ; Norihiro SUGINO ; Etsuko FUJIMOTO ; Norihito YOSHIOKA ; Satoshi NAKAGAWA ; Muneaki SHIMADA ; Hideki TOKUNAGA ; Yuki YAMADA ; Tomohiko TSURUTA ; Kazuto TASAKI ; Ryutaro NISHIKAWA ; Shiho KUJI ; Takashi MOTOHASHI ; Kimihiko ITO ; Takashi YAMADA ; Norihiro TERAMOTO
Journal of Gynecologic Oncology 2019;30(6):e103-
OBJECTIVE: We conducted a retrospective, multi-institutional, collaborative study to accumulate cases of neuroendocrine carcinoma of the endometrium, to clarify its clinicopathologic features, treatment, prognosis and prognostic factors to collate findings to establish future individualized treatment regimens. To our knowledge, this is the largest case study and the first study to statistically analyze the prognosis of this disease. METHODS: At medical institutions participating in the Kansai Clinical Oncology Group/Intergroup, cases diagnosed at a central pathologic review as neuroendocrine carcinoma of the endometrium between 1995 and 2014 were enrolled. We retrospectively analyzed the clinicopathologic features, treatment, prognosis and prognostic factors of this disease. RESULTS: A total of 65 cases were registered from 18 medical institutions in Japan. Of these, 42 (64.6%) cases were diagnosed as neuroendocrine carcinoma of the endometrium based on the central pathological review and thus included in the study. Advanced International Federation of Gynecology and Obstetrics stages (stage III and IV) and pure type small cell neuroendocrine carcinoma cases had a significantly worse prognosis. Upon multivariate analysis, only histologic subtypes and surgery were significant prognostic factors. Pure type cases had a significantly worse prognosis compared to mixed type cases and complete surgery cases had a significantly better prognosis compared to cases with no or incomplete surgery. CONCLUSION: Our findings suggest that complete surgery improves the prognosis of neuroendocrine carcinoma of the endometrium. Even among cases with advanced disease stages, if complete surgery is expected to be achieved, clinicians should consider curative surgery to improve the prognosis of neuroendocrine carcinoma of the endometrium.
Carcinoma, Large Cell
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Carcinoma, Neuroendocrine
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Carcinoma, Small Cell
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Endometrial Neoplasms
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Endometrium
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Female
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Gynecology
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Japan
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Medical Oncology
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Multivariate Analysis
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Obstetrics
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Prognosis
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Retrospective Studies
4.Home Care in the Era of COVID-19 —Results from the Bereaved Families of Terminal Cancer Patients Survey—
Tomoya IIDA ; Nagomi ITO ; Naoka OKAMURA ; Michio IIDA ; Yoshiki WADA ; Natsumi ANDO ; Hiromu MIURA ; Hideo YOSHIZAKI ; Atsuko KADOWAKI ; Nana YAMAZAKI ; Kentaro NAGAOKA
Palliative Care Research 2023;18(1):55-60
The purpose of this study was to examine the impact of COVID-19 on home care at the end of life and the satisfaction of bereaved families. A questionnaire survey was conducted on 100 bereaved families of terminal cancer patients who were receiving home care. The effects of the COVID-19 on at-home medical treatment and the rate of satisfaction of bereaved families were examined. The response rate for this survey was 72.0%. Of the respondents, 52.8% of the bereaved families answered that the COVID-19 had an effect on their decision to choose home care. The rate of satisfaction of bereaved families was 98.6%. Even for terminal cancer patients who chose home care in the era of COVID-19 at our hospital, we were able to achieve high level of satisfaction for bereaved families.