Full Text Journal Articles by
Author Yoichi Kobayashi

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Green and far-red-light induced electron injection from perylene bisimide to wide bandgap semiconductor nanocrystals with stepwise two-photon absorption process.

Daisuke Yoshioka, Daiki Fukuda, Yoichi Kobayashi,

Stepwise two-photon absorption (2PA) processes are becoming an important technique because it can achieve high reductive photochemical reactions with visible and near infrared light and intensity-gated high spatiotemporal selectivity with much lower power thresholds than those of the simultaneous 2PA. However, excited states generated by stepwise 2PA (higher excited states ... Read more >>

Nanoscale (Nanoscale)
[2021, 13(3):1823-1831]

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Importance of lymph node immune responses in MSI-H/dMMR colorectal cancer.

Koji Inamori, Yosuke Togashi, Shota Fukuoka, Kiwamu Akagi, Kouetsu Ogasawara, Takuma Irie, Daisuke Motooka, Yoichi Kobayashi, Daisuke Sugiyama, Motohiro Kojima, Norihiko Shiiya, Shota Nakamura, Shoichi Maruyama, Yutaka Suzuki, Masaaki Ito, Hiroyoshi Nishikawa,

Patients with colorectal cancers (CRCs) generally exhibit improved survival through intensive lymph node (LN) dissection. However, recent progress in cancer immunotherapy revisits the potential importance of regional LNs, where T cells are primed to attack tumor cells. To elucidate the role of regional LN, we investigated the immunological status of ... Read more >>

JCI Insight (JCI insight)
[2021, :]

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SARS-CoV-2 vaccination modelling for safe surgery to save lives: data from an international prospective cohort study.

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<h4>Background</h4>Preoperative SARS-CoV-2 vaccination could support safer elective surgery. Vaccine numbers are limited so this study aimed to inform their prioritization by modelling.<h4>Methods</h4>The primary outcome was the number needed to vaccinate (NNV) to prevent one COVID-19-related death in 1 year. NNVs were based on postoperative SARS-CoV-2 rates and mortality in an ... Read more >>

Br J Surg (The British journal of surgery)
[2021, :]

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A retrospective analysis of pembrolizumab plus chemotherapy versus pembrolizumab monotherapy for advanced or recurrent non-small cell lung cancer.

Taisuke Isono, Naho Kagiyama, Shun Shibata, Hitomi Nakajima, Yuma Matsui, Kenji Takano, Takashi Nishida, Chiaki Hosoda, Eriko Kawate, Yoichi Kobayashi, Takashi Ishiguro, Yotaro Takaku, Kazuyoshi Kurashima, Tsutomu Yanagisawa, Noboru Takayanagi,

<h4>Background</h4>Although clinical trials have investigated the addition of pembrolizumab to chemotherapy for non-small cell lung cancer, none have investigated the addition of chemotherapy to pembrolizumab.<h4>Methods</h4>We conducted a retrospective study of 71 NSCLC patients including 33 treated with pembrolizumab plus chemotherapy (combination therapy group) and 38 treated with pembrolizumab monotherapy (monotherapy ... Read more >>

Thorac Cancer (Thoracic cancer)
[2021, :]

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The 2020 Japan Society of Gynecologic Oncology guidelines for the treatment of ovarian cancer, fallopian tube cancer, and primary peritoneal cancer.

Hideki Tokunaga, Mikio Mikami, Satoru Nagase, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Toyomi Satoh, Yasuyuki Hirashima, Noriomi Matsumura, Yoshihito Yokoyama, Kei Kawana, Satoru Kyo, Daisuke Aoki, Hidetaka Katabuchi,

The fifth edition of the Japan Society of Gynecologic Oncology guidelines for the treatment of ovarian cancer, fallopian tube cancer, and primary peritoneal cancer was published in 2020. The guidelines contain 6 chapters-namely, (1) overview of the guidelines; (2) epithelial ovarian cancer, fallopian tube cancer, and primary peritoneal cancer; (3) ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2021, 32(2):e49]

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Fast T-Type Photochromism of Colloidal Cu-Doped ZnS Nanocrystals.

Yulian Han, Morihiko Hamada, I-Ya Chang, Kim Hyeon-Deuk, Yasuhiro Kobori, Yoichi Kobayashi,

This paper reports on durable and nearly temperature-independent (at 298-328 K) T-type photochromism of colloidal Cu-doped ZnS nanocrystals (NCs). The color of Cu-doped ZnS NC powder changes from pale yellow to dark gray by UV light irradiation, and the color changes back to pale yellow on a time scale of ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2021, 143(5):2239-2249]

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Identification of biomarkers for drug-resistant endometriosis using clinical proteomics.

Yoichi Kobayashi, Toshiyuki Fukutomi, Shizuka Mita, Momoe Watanabe, Atsushi Suzuki,

Dienogest (DNG), is an effective and widely used progestin used in the treatment of endometriosis, yet clinically, a subset of cases show resistance to DNG treatment. During a previous investigation on the effect of DNG of cytokines and growth factor production, we incidentally found that endometriotic cyst fluid did not ... Read more >>

Hum Cell (Human cell)
[2021, 34(2):394-399]

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Impact of lymphadenectomy on the treatment of endometrial cancer using data from the JSOG cancer registry.

Keiko Saotome, Wataru Yamagami, Hiroko Machida, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Daisuke Aoki, Mikio Mikami,

<h4>Objective</h4>Regional lymph node (LN) dissection is a standard surgical procedure for endometrial cancer, but there is currently no clear consensus on its therapeutic significance. We aimed to determine the impact of regional LN dissection on the outcome of endometrial cancer.<h4>Methods</h4>Study subjects comprised 36,813 patients who were registered in the gynecological ... Read more >>

Obstet Gynecol Sci (Obstetrics & gynecology science)
[2021, 64(1):80-89]

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Specific pathogens as predictors of poor long-term prognosis after hospital discharge for community-acquired pneumonia.

Yuto Akiyama, Takashi Ishiguro, Ryuji Uozumi, Takashi Nishida, Yoichi Kobayashi, Noboru Takayanagi,

<h4>Background</h4>Some studies have reported that long-term prognosis after pneumonia is poor. Our aim was to determine predictors of long-term outcomes with special attention to community-acquired pneumonia (CAP) etiology.<h4>Methods</h4>We studied 1930 patients who were hospitalized with CAP from January 2002 through November 2017 at Saitama Cardiovascular and Respiratory Center and were discharged ... Read more >>

Respir Med (Respiratory medicine)
[2021, 176:106279]

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Outcome and risk factor of immune-related adverse events and pneumonitis in patients with advanced or postoperative recurrent non-small cell lung cancer treated with immune checkpoint inhibitors.

Taisuke Isono, Naho Kagiyama, Kenji Takano, Chiaki Hosoda, Takashi Nishida, Eriko Kawate, Yoichi Kobayashi, Takashi Ishiguro, Youtaro Takaku, Kazuyoshi Kurashima, Tsutomu Yanagisawa, Noboru Takayanagi,

<h4>Background</h4>Non-small cell lung cancer (NSCLC) patients with pre-existing respiratory diseases have been excluded in clinical trials of immune checkpoint inhibitor (ICI) therapy, and it is unknown whether the same degree of response can be expected as that in patients without pre-existing respiratory diseases and if they are associated with increased ... Read more >>

Thorac Cancer (Thoracic cancer)
[2021, 12(2):153-164]

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Analysis of pathological and clinical characteristics of cervical conization according to age group in Japan.

Isao Murakami, Akiko Ohno, Masae Ikeda, Hiroshi Yamashita, Mikio Mikami, Yoichi Kobayashi, Satoru Nagase, Masatoshi Yokoyama, Takayuki Enomoto, Hidetaka Katabuchi,

<h4>Objective</h4>With increased screening, more patients with precancerous or early cervical cancer are now being identified. Age at pregnancy, and thus number of patients requiring fertility preservation, have also increased, resulting in more diagnostic and therapeutic cervical conization (conization) procedures. We here investigated the pathological and clinical characteristics of patients undergoing ... Read more >>

Heliyon (Heliyon)
[2020, 6(10):e05193]

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Self-Associating Curved π-Electronic Systems with Electron-Donating and Hydrogen-Bonding Properties.

Yohei Haketa, Mika Miyasue, Yoichi Kobayashi, Ryuma Sato, Yasuteru Shigeta, Nobuhiro Yasuda, Naoto Tamai, Hiromitsu Maeda,

Curved π-electronic molecules, dipyrrolylbenzodiazepines (dpbs), were synthesized via condensation of 1,3-dipyrrolyldiketones and phenylenediamines. Dpbs exhibited 1D hydrogen-bonding chains between pyrrole NH and diazepine N and the resulting packing structures in the solid state. The pyrrole and diazepine N sites coordinate Rh<sup>I</sup>, providing curved π-electronic systems of increasing rigidity. Dpb underwent ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2020, 142(38):16420-16428]

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Two Cases of Primary Rhinovirus Pneumonia with Multiple Pulmonary Nodules.

Yasuhiro Morimoto, Takashi Ishiguro, Keisuke Kasuga, Kenji Takano, Ryota Ozawa, Taisuke Isono, Yuto Akiyama, Yasuhito Kobayashi, Yoichi Kobayashi, Yoshihiko Shimizu, Noboru Takayanagi,

Two patients, a 60-year-old man and 43-year-old woman, presented to our hospital with symptoms of respiratory tract infection. These patients showed imaging findings of multiple small nodules, ground-glass opacities, and consolidations. In case 1, although antibiotics were started, bilateral shadows spread widely, which made us suspect interstitial pneumonia. The condition ... Read more >>

Intern Med (Internal medicine (Tokyo, Japan))
[2021, 60(3):435-439]

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Clinical course and findings of 14 patients with COVID-19 compared with 5 patients with conventional human coronavirus pneumonia.

Takashi Ishiguro, Kenji Takano, Naho Kagiyama, Chiaki Hosoda, Yoichi Kobayashi, Yotaro Takaku, Naomi Takata, Miyuki Ueda, Yasuhiro Morimoto, Keisuke Kasuga, Ryota Ozawa, Taisuke Isono, Takashi Nishida, Eriko Kawate, Yasuhito Kobayashi, Yoshihiko Shimizu, Kazuyoshi Kurashima, Tsutomu Yanagisawa, Noboru Takayanagi,

<h4>Objective</h4>To clarify what future problems must be resolved and how clinical findings of SARS-CoV-2 infection differ from those of cHCoV infection.<h4>Methods</h4>Patients and Methods Clinical characteristics of 14 patients with laboratory-confirmed Coronavirus disease 2019 (COVID-19) and 5 patients with cHCoV pneumonia admitted to our institution and treated up to March 8, ... Read more >>

Respir Med Case Rep (Respiratory medicine case reports)
[2020, 31:101207]

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IgG antibody seroconversion and the clinical progression of COVID-19 pneumonia: A retrospective, cohort study

Kazuyoshi Kurashima, Naho Kagiyama, Takashi Ishiguro, Yotaro Takaku, Hiromi Nakajima, Shun Shibata, Yuma Matsui, Kenji Takano, Taisuke Isono, Takashi Nishida, Eriko Kawate, Chiaki Hosoda, Yoichi Kobayashi, Noboru Takayanagi, Tsutomu Yanagisawa,

<h4>Summary</h4> <h4>Background</h4> Coronavirus Disease 2019 (COVID-19) causes severe acute respiratory failure. Antibody-dependent enhancement (ADE) is known as the mechanism for severe forms of other coronavirus diseases. The clinical progression of COVID-19 before and after IgG antibody seroconversion was investigated. <h4>Methods</h4> Fifty-three patients with reverse transcriptase PCR (RT-PCT)-confirmed COVID-19 viral pneumonia ... Read more >>

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Contraction-associated proteins expression by human uterine smooth muscle cells depends on maternal serum and progranulin associated with gestational weight gain.

Kei Tanaka, Makoto Osaka, Satoshi Takemori, Momoe Watanabe, Shinji Tanigaki, Yoichi Kobayashi,

Pregnant women with obesity are at increased risk of parturition dysfunction; however, the biological mechanism has remained unknown. We hypothesized that molecules circulating in the serum of pregnant women with obesity may induce the aberrant expression of contraction-associated proteins (CAPs), leading to insufficient uterine contractions. This study aimed to investigate ... Read more >>

Endocr J (Endocrine journal)
[2020, 67(8):819-825]

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Proposal of a Two-Tier System in Grouping Adenocarcinoma of the Uterine Cervix.

Hiroko Machida, Koji Matsuo, Shinya Matsuzaki, Wataru Yamagami, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Mikio Mikami,

(1) Background: This study examined the use of a two-tier system in grouping cervical adenocarcinoma for survival discrimination. (2) Methods: A nationwide retrospective observational cohort study was conducted using the Japan Society of Gynecologic Oncology tumor registry database from 2001 to 2015 (n = 86,754). Adenocarcinoma subtypes were grouped as ... Read more >>

Cancers (Basel) (Cancers)
[2020, 12(5):]

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Photochromic Radical Complexes That Show Heterolytic Bond Dissociation.

Ryosuke Usui, Katsuya Yamamoto, Hajime Okajima, Katsuya Mutoh, Akira Sakamoto, Jiro Abe, Yoichi Kobayashi,

Photochromic materials have been widely used in various research fields because of their variety of photoswitching properties based on various molecular frameworks and bond breaking processes, such as homolysis and heterolysis. However, while a number of photochromic molecular frameworks have been reported so far, there are few reports on photochromic ... Read more >>

J Am Chem Soc (Journal of the American Chemical Society)
[2020, 142(22):10132-10142]

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Mirror syndrome due to anti-Jra alloimmunization.

Kei Tanaka, Kenichiro Hosoi, Shinya Yoshiike, Kiyotaka Nagahama, Shinji Tanigaki, Junji Shibahara, Hiroaki Ohnishi, Yoichi Kobayashi,

<h4>Objective</h4>We report a case of fetal hydrops and mirror syndrome in a pregnancy with anti-Jra alloimmunization.<h4>Case report</h4>A 34-year-old multiparous woman (G3P2) at 29 weeks of gestation had complications which included generalized edema and mild dyspnea. An indirect Coombs test was positive for anti-Jra antibodies. A blood examination showed hemodilution and ... Read more >>

Taiwan J Obstet Gynecol (Taiwanese journal of obstetrics & gynecology)
[2020, 59(3):456-459]

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Two-Dimensional Electronic Spectroscopy Using Rotating Optical Flats.

Patrick C Tapping, Yin Song, Yoichi Kobayashi, Gregory D Scholes, Tak W Kee,

In two-dimensional electronic spectroscopy (2DES), precise control of the arrival time of ultrashort laser pulses is critical to correlating the molecular states that are accessed in the experiment. In this work, we demonstrate a 2D electronic spectrometer design with an interferometric phase stability of ∼λ/250 at 600 nm. First, we ... Read more >>

J Phys Chem A (The journal of physical chemistry. A)
[2020, 124(5):1053-1061]

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Correction to: Gene expression and DNA methylation changes in BeWo cells dependent on tumor necrosis factor-α and insulin-like growth factor-I.

Kei Tanaka, Kazuhiko Nakabayashi, Tomoko Kawai, Shinji Tanigaki, Kenji Matsumoto, Kenichiro Hata, Yoichi Kobayashi,

In the original publication of the article, the author names were abbreviated in the author group. The corrected list of author names is presented above. ... Read more >>

Hum Cell (Human cell)
[2020, 33(1):294]

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Survival outcome and perioperative complication related to neoadjuvant chemotherapy with carboplatin and paclitaxel for advanced ovarian cancer: A systematic review and meta-analysis.

Hiroko Machida, Hideki Tokunaga, Koji Matsuo, Noriomi Matsumura, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Mikio Mikami,

<h4>Objective</h4>To compare the effectiveness and safety of neoadjuvant chemotherapy with carboplatin/paclitaxel followed by interval debulking surgery (NACT-IDS) to primary debulking surgery plus postoperative chemotherapy (PDS) for advanced ovarian cancer.<h4>Methods</h4>A comprehensive systematic review and meta-analysis were conducted by an Expert Panel of the Japan Society of Gynecologic Oncology Ovarian Cancer Committee. ... Read more >>

Eur J Surg Oncol (European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology)
[2020, 46(5):868-875]

Cited: 2 times

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Gene expression and DNA methylation changes in BeWo cells dependent on tumor necrosis factor-α and insulin-like growth factor-I.

Kei Tanaka, Kazuhiko Nakabayashi, Tomoko Kawai, Shinji Tanigaki, Kenji Matsumoto, Kenichiro Hata, Yoichi Kobayashi,

Pregnant women with increased insulin resistance, characterized by elevated levels of tumor necrosis factor-alpha (TNF-α) and insulin-like growth factor-I (IGF-I), are at high risk of preeclampsia. We hypothesized that TNF-α and IGF-I affect the placentas and cause pathological changes leading to preeclampsia. To understand the genetic and epigenetic effects of ... Read more >>

Hum Cell (Human cell)
[2020, 33(1):37-46]

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Intraoperative Capsule Rupture, Postoperative Chemotherapy, and Survival of Women With Stage I Epithelial Ovarian Cancer.

Koji Matsuo, Hiroko Machida, Wataru Yamagami, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Mikio Mikami,

<h4>Objective</h4>To examine the incidence and prognostic effects of intraoperative capsule rupture and to assess the effectiveness of postoperative chemotherapy for intraoperative tumor rupture in apparent stage I epithelial ovarian cancer.<h4>Methods</h4>This is a society-based retrospective observational study in Japan that examined 15,163 women with stage IA-IC1 epithelial ovarian cancer who underwent ... Read more >>

Obstet Gynecol (Obstetrics and gynecology)
[2019, 134(5):1017-1026]

Cited: 5 times

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Japan Society of Gynecologic Oncology 2018 guidelines for treatment of uterine body neoplasms.

Wataru Yamagami, Mikio Mikami, Satoru Nagase, Tsutomu Tabata, Yoichi Kobayashi, Masanori Kaneuchi, Hiroaki Kobayashi, Hidekazu Yamada, Kiyoshi Hasegawa, Hiroyuki Fujiwara, Hidetaka Katabuchi, Daisuke Aoki,

The Fourth Edition of the Guidelines for Treatment of Uterine Body Neoplasm was published in 2018. These guidelines include 9 chapters: 1. Overview of the guidelines, 2. Initial treatment for endometrial cancer, 3. Postoperative adjuvant therapy for endometrial cancer, 4. Post-treatment surveillance for endometrial cancer, 5. Treatment for advanced or ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2020, 31(1):e18]

Cited: 4 times

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