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Ikuo Konishi,Kaoru Abiko,Takuma Hayashi,Koji Yamanoi,Ryusuke Murakami,Ken Yamaguchi,Junzo Hamanishi,Tsukasa Baba,Noriomi Matsumura,Masaki Mandai,Kyoto Study Group for Ovarian Cancer Research 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.5
Epithelial ovarian cancer remains the lethal gynecological malignancy in women. The representative histotype is high-grade serous carcinoma (HGSC), and most patients with HGSC present at advanced stages with peritoneal dissemination. Since the peritoneal dissemination is the most important factor for poor prognosis of the patients, complete exploration for its molecular mechanisms is mandatory. In this narrative review, being based on the clinical, pathologic, and genomic findings of HGSC, chromosomal instability and epigenetic dynamics have been discussed as the potential drivers for cancer development in the fallopian tube, acquisition of cancer stem cell (CSC)-like properties, and peritoneal metastasis of HGSC. The natural history of carcinogenesis with clonal evolution, and adaptation to microenvironment of peritoneal dissemination of HGSC should be targeted in the novel development of strategies for prevention, early detection, and precision treatment for patients with HGSC.
Okazaki, Tohru,Hayashi, Hiroaki,Takegami, Kazuki,Okino, Hiroki,Kimoto, Natsumi,Maehata, Itsumi,Kobayashi, Ikuo The Korean Association for Radiation Protection 2016 방사선방어학회지 Vol.41 No.3
Background: In order to manage the patient exposure dose in X-ray diagnosis, it is preferred to evaluate the entrance skin dose; although there are some evaluations about entrance skin dose, a small number of report has been published for direct measurement of patient. We think that a small-type optically stimulated luminescence (OSL) dosimeter, named nanoDot, can achieve a direct measurement. For evaluations, the corrections of angular and energy dependences play an important role. In this study, we aimed to evaluate the angular and the energy dependences of nanoDot. Materials and Methods: We used commercially available X-ray diagnostic equipment. For angular dependence measurement, a relative response of every 15 degrees of nanoDot was measured in 40-140 kV X-ray. And for energy dependence measurement, mono-energetic characteristic X-rays were generated using several materials by irradiating the diagnostic X-rays, and the nanoDot was irradiated by the characteristic X-rays. We evaluated the measured response in an energy range of 8.1-75.5 keV. In addition, we performed Monte-Carlo simulation to compare experimental results. Results and Discussion: The experimental results were in good agreement with those of Monte-Carlo simulation. The angular dependence of nanoDot was almost steady with the response of 0 degrees except for 90 and 270 degrees. Furthermore, we found that difference of the response of nanoDot, where the nanoDot was irradiated from the randomly set directions, was estimated to be at most 5%. On the other hand, the response of nanoDot varies with the energy of incident X-rays; slightly increased to 20 keV and gradually decreased to 80 keV. These results are valuable to perform the precise evaluation of entrance skin dose with nanoDot in X-ray diagnosis. Conclusion: The influence of angular dependence and energy dependence in X-ray diagnosis is not so large, and the nanoDot OSL dosimeter is considered to be suitable dosimeter for direct measurement of entrance surface dose of patient.
A Study of the radioprotection effect of macro-glucan (β-1-3glucan) on thefetuses of ICR mice
Gu, Yeun-hwa,Hasegawa, Takeo,Suzuki, Ikukatsu,Hayashi, Ikuo,Ahn, Kyoo-Seok,Tawaraya, Hitoshi INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2000 JOURNAL OF ORIENTAL MEDICINE Vol.5 No.1
In this study abundant malformations of ICR mice in the organogenesis stages were observed and the radioprotection effect of Macro-Glucan(β-1-3glucan) was shown. This research examined the radioprotection effect of Macro-Glucan(β-1-3glucan) and its teratogenic properties. The reason it has a preventive effect on a tall fetus was examined in the research. We examined the determination stage (organogenesis), and pointed to malformation toward the radiation in the enviornmental agent to the malformaiton. Moreover, we examined the cellularis level of the embryos toward the radiation and analyzed the mechanism of the protection effect of the Macro-Glucan(-1-3glucan) from malformation induction by the radiation. Therefore, the purpose of this research is to get a foundation of data of the radioprotection effect of Macro-Glucan(-1-3glucan). This study produced the following results : It was made clear that Macro-Glucan(-1-3glucan) had a radioprotection effect against embryonic death. Radioprotection effect was recognized as the teratogenesis rate by Macro-Glucan(-1-3glucan)'s administering it before the exposure. Therefore, the subject faced radiation exposure by the Macro-Glucan(-1-3glucan) administration, and radiological protecting effect was made clear.
(Yeun hwa Gu),(Hasegawa Takeo),(Suzuki Ikukatsu),(Hayashi Ikuo),(Kyoo Seok Ahn),(Tawaraya Hitoshi) 경희대학교 한의학연구소 2000 JOURNAL OF ORIENTAL MEDICINE Vol.5 No.1
In this study abundant malformations of ICR mice in the organogenesis stages were observed and the radioprotection effect of Macro-Glucan(β-1-3glucan) was shown. This research examined the radioprotection effect of Macro-Glucan(β-1-3glucan) and its terato
Guarana Water Eextraction Thing of The Comparison with Acute Toxic and Learning Ability Effects
Suzuki, Ikukatsu,Gu, Yeun-Hwa,Hayashi, Ikuo,Takeuchi, Tetsuo,Takagi, Yasuyuki,Mizumoto, Norihite INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2002 JOURNAL OF ORIENTAL MEDICINE Vol.7 No.1
Central excited material is contained in Guarana water extraction thing, and the central excited material is thought to be caffeine, teopiline, and teobulomine by this experiment. And, the LD50 value of Guarana water extraction thing without a shell is calculated 2900mg/kg with though the LD50 value of Guarana warter extraction thing with the shell was calculated 1350mg/kg with by the Behrens-Karber method. An acute toxic examination due to the existence of the shell was done again and more than the above result as a future subject. The computation of the LD50 value and the analysis of the element of the shell could get it further again in fraction chromatography. It is examined where strong toxic material is contained, and it thinks that it is necessary to do specifying of the toxic material.
Radioprotection Effects and the Anti-Cancer Effects of the Species (Miroku-Tea)
Gu, Yeun-Hwa,Suzuki, Ikukatu,Hasegawa, Takeo,Hayashi, Ikuo,Hitoshi, Tawaraya,Ahn, Kyoo-Seok INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2001 JOURNAL OF ORIENTAL MEDICINE Vol.6 No.1
In recent years the effectiveness of species (Miroku-Tea) as an anti-cancer, anti0biotic effect and anti-virus effect has become more widely known. Furthermore the beneficial effects of species (Miroku-Tea) leaves have also been studied. In this study, we investigated measurement of blood cells, the NK cell activity, the radio-protective and anti-cancer effects of species (Miroku-Tea) extract. The leucocytes and the lymphocyte were transietnly increased after injection of species (Miroku-Tea). Anti-tumor effect was occurred after the injuection of species (Miroku-Tea). NK cells activity increased 2 times after the injection of species (Miroku-Tea) compared with the control group. Radiation protection occurred from the inhibition of body weight loss and also a prolonged the surviving fraction after the injection of species (Miroku-Tea).
Radioprotection Effects to the Radiation Side Effect in EEM (Extracts of Edible Mushrooms)
Gu, Yeun-Hwa,Masaki, Matsumori,Suzuki, Ikukatu,Takeo, Hasegawa,Yuuichi, Ukawa,Hitoshi, Tawaraya,Ikuo, Hayashi,Ahn, Kyoo-Seok INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 2003 JOURNAL OF ORIENTAL MEDICINE Vol.6 No.1
Presently, raditherapy is often used alone or in combination with anti-cancer medicine as a treatment for cancer. Chemosynthesis has been used as a radiation protection medicine. But, its use has been restricted due to serious side effects. ICR mice have often been used for malformation experiments as they were used in this research. Here, EEM (extracts of edible mushrooms (and extraction from Flammulina velutires and lyuophyllum ulmarium)), a natural product, was used as a radioprotective agent and its effects were examined. A decline in the fetus malformation rate was recognized when giveing EEM before the radiation irradiation. Moreover, a repression in the decrease of fetus weight was recognized, and the effect on radiation protection of EEM was explained at the individual level. And, I had the effect on protection that faced a corpuscle cell by the radiation by giving EEM was explained in the same way too. As for the cell level as well, it was proved that there was an effect on protection against radiation irradiation in the same way as the individual level. Furthermore, an examination was done about the effects on the external malformation to the radiation, the embryonic death rate and the sensitivity of the lymphocyte at the organogenesis stage. Furtheromore, the study was done about the effects on the malformation to the radiation, the embryonic death rate and the sensitivity of the lymphocyte at the fetus of the organogenesis stage.