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1,196 results on '"Sakai, Hiroki"'

7. Evaluating the Institutional Reforms and Private Participation in Japanese Container Ports—Evidence from Multi-stage DEA Analysis

Author

Sakai, Hiroki, Nakanishi, Noritsugu, Series Editor, Hamori, Shigeyuki, Series Editor, Suzuki, Kazumi, Editorial Board Member, Yasui, Hiroki, Editorial Board Member, Kinugasa, Tomoko, Editorial Board Member, Kaneko, Yuka, Editorial Board Member, Sato, Takahiro, Editorial Board Member, Mizutani, Fumitoshi, editor, Urakami, Takuya, editor, and Nakamura, Eri, editor

Published
2023
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27. Permeability and Toxicity of Cryoprotective Agents in Silkworm Embryos: Impact on Cryopreservation.

Author

Urbán-Duarte, David, Tomita, Shuichiro, Sakai, Hiroki, Sezutsu, Hideki, Álvarez-Gallardo, Horacio, Kainoh, Yooichi, Furukawa, Seiichi, and Uchino, Keiro

Subjects
CRYOPROTECTIVE agents, SILKWORMS, PROPYLENE glycols, DIMETHYL sulfoxide, VITRIFICATION
Abstract

The permeation of cryoprotectants into insect embryos is critical for successful cryopreservation. However, the permeability of silkworm embryos to cryoprotectants and the effects of cryopreservation remain poorly studied. In this study, we evaluated the permeability and toxicity of four cryoprotective agents (CPAs) as well as the vitrification effect on the viability of silkworm embryos. Among the four CPAs, propylene glycol (PG) showed the best permeability. Ethylene glycol (EG) and PG were the least toxic CPAs, but glycerol (GLY) and dimethyl sulfoxide (DMSO) were more toxic. Moreover, we examined several factors including the kind and the concentration of CPAs, exposure time, embryonic stage, and silkworm strains. Embryos at the earlier phases of stage 25 were more tolerant to vitrification using EG. We found that over 21% of embryos treated with EG at the early 2 phase of stage 25: 163 h after egg laying (AEL) developed and progressed to serosa ingestion after vitrification and rewarming. The result was the same in other strains as well. Our results are valuable for the development of new cryopreservation protocols of silkworm embryos. [ABSTRACT FROM AUTHOR]

Published
2024
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28. Combination of advanced lung cancer inflammation index and nonalcoholic fatty liver disease fibrosis score as a promising marker for surgical procedure selection for hepatocellular carcinoma.

Author

Hosoda, Kiyotaka, Shimizu, Akira, Kubota, Koji, Notake, Tsuyoshi, Kitagawa, Noriyuki, Yoshizawa, Takahiro, Sakai, Hiroki, Hayashi, Hikaru, Yasukawa, Koya, and Soejima, Yuji

Subjects
SURGICAL complications, HEPATIC fibrosis, NON-alcoholic fatty liver disease, LUNG cancer, PNEUMONIA, LIVER surgery
Abstract

Aim: Methods of predicting severe postoperative complications after anatomical resection for hepatocellular carcinoma are yet to be established. We aimed to clarify the relationship between inflammation‐based prognostic scores and liver fibrosis markers and the incidence of postoperative complications after anatomical resection for hepatocellular carcinoma as well as the usefulness of these markers in surgical procedure selection. Methods: We included 374 patients with hepatocellular carcinoma who had undergone initial hepatectomy between January 2007 and December 2021. The association between inflammation‐based prognostic scores or liver fibrosis markers and postoperative complications was evaluated, and severe postoperative complication rates in the high‐risk group defined by these markers were compared in terms of surgical procedure. Results: The advanced lung cancer inflammation index and nonalcoholic fatty liver disease fibrosis score correlated significantly with severe postoperative complications after anatomical resection, with areas under the curve of 0.67 and 0.61, respectively. The combined advanced lung cancer inflammation index and nonalcoholic fatty liver disease fibrosis score resulted in a larger area under the curve (0.69). Furthermore, in the high‐risk group determined by the combined score, the anatomical resection group had a significantly higher incidence of severe complications than the partial resection group (P < 0.01). There were no significant differences in prognosis among the surgical procedures in the high‐risk group. Conclusion: The combined advanced lung cancer inflammation index and nonalcoholic fatty liver disease fibrosis score serves as a predictive marker for severe postoperative complications after anatomical resection. This combined marker may contribute to appropriate surgical procedure selection. [ABSTRACT FROM AUTHOR]

Published
2024
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35. Femoral nerve versus adductor canal block for early postoperative pain control and knee function after anterior cruciate ligament reconstruction with hamstring autografts: a prospective single-blind randomised controlled trial

Author

Ogura, Takahiro, Omatsu, Hiroaki, Fukuda, Hideaki, Asai, Shigehiro, Saito, Chikara, Takahashi, Tatsuya, Ichino, Yoshinobu, Omodani, Toru, Sakai, Hiroki, Yamaura, Ichiro, Kawasaki, Yohei, Tsuchiya, Akihiro, and Takahashi, Kenji

Published
2021
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50. Dimorphic sperm formation by Sex-lethal

Author

Sakai, Hiroki, Oshima, Hiroyuki, Yuri, Kodai, Gotoh, Hiroki, Daimon, Takaaki, Yaginuma, Toshinobu, Sahara, Ken, and Niimi, Teruyuki

Published
2019

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