448 results on '"Haruki K"'
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2. An Outbreak of Gastroenteritis in Osaka, Japan Due to Escherichia coli Serogroup O166:H15 That Had a Coding Gene for Enteroaggregative E. coli Heat-Stable Enterotoxin 1 (EAST1)
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Zhou, Z., Ogasawara, J., Nishikawa, Y., Seto, Y., Helander, A., Hase, A., Iritani, N., Nakamura, H., Arikawa, K., Kai, A., Kamata, Y., Hoshi, H., and Haruki, K.
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- 2002
3. Bayesian risk prediction model for colorectal cancer mortality through integration of clinicopathologic and genomic data
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Zhao, M. (Melissa), Lau, M. C. (Mai Chan), Haruki, K. (Koichiro), Väyrynen, J. P. (Juha P.), Gurjao, C. (Carino), Väyrynen, S. A. (Sara A.), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Hamada, T. (Tsuyoshi), Lennerz, J. K. (Jochen K.), Fuchs, C. S. (Charles S.), Nishihara, R. (Reiko), Chan, A. T. (Andrew T.), Ng, K. (Kimmie), Zhang, X. (Xuehong), Meyerhardt, J. A. (Jeffrey A.), Song, M. (Mingyang), Wang, M. (Molin), Giannakis, M. (Marios), Nowak, J. A. (Jonathan A.), Yu, K.-H. (Kun-Hsing), Ugai, T. (Tomotaka), Ogino, S. (Shuji), Zhao, M. (Melissa), Lau, M. C. (Mai Chan), Haruki, K. (Koichiro), Väyrynen, J. P. (Juha P.), Gurjao, C. (Carino), Väyrynen, S. A. (Sara A.), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Hamada, T. (Tsuyoshi), Lennerz, J. K. (Jochen K.), Fuchs, C. S. (Charles S.), Nishihara, R. (Reiko), Chan, A. T. (Andrew T.), Ng, K. (Kimmie), Zhang, X. (Xuehong), Meyerhardt, J. A. (Jeffrey A.), Song, M. (Mingyang), Wang, M. (Molin), Giannakis, M. (Marios), Nowak, J. A. (Jonathan A.), Yu, K.-H. (Kun-Hsing), Ugai, T. (Tomotaka), and Ogino, S. (Shuji)
- Abstract
Routine tumor-node-metastasis (TNM) staging of colorectal cancer is imperfect in predicting survival due to tumor pathobiological heterogeneity and imprecise assessment of tumor spread. We leveraged Bayesian additive regression trees (BART), a statistical learning technique, to comprehensively analyze patient-specific tumor characteristics for the improvement of prognostic prediction. Of 75 clinicopathologic, immune, microbial, and genomic variables in 815 stage II–III patients within two U.S.-wide prospective cohort studies, the BART risk model identified seven stable survival predictors. Risk stratifications (low risk, intermediate risk, and high risk) based on model-predicted survival were statistically significant (hazard ratios 0.19–0.45, vs. higher risk; P < 0.0001) and could be externally validated using The Cancer Genome Atlas (TCGA) data (P = 0.0004). BART demonstrated model flexibility, interpretability, and comparable or superior performance to other machine-learning models. Integrated bioinformatic analyses using BART with tumor-specific factors can robustly stratify colorectal cancer patients into prognostic groups and be readily applied to clinical oncology practice.
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- 2023
4. Inverse relationship between Fusobacterium nucleatum amount and tumor CD274 (PD-L1) expression in colorectal carcinoma
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Ugai, T. (Tomotaka), Shimizu, T. (Takashi), Kawamura, H. (Hidetaka), Ugai, S. (Satoko), Takashima, Y. (Yasutoshi), Usui, G. (Genki), Väyrynen, J. P. (Juha P.), Okadome, K. (Kazuo), Haruki, K. (Koichiro), Akimoto, N. (Naohiko), Masugi, Y. (Yohei), da Silva, A. (Annacarolina), Mima, K. (Kosuke), Zhang, X. (Xuehong), Chan, A. T. (Andrew T.), Wang, M. (Molin), Garrett, W. S. (Wendy S.), Freeman, G. J. (Gordon J.), Meyerhardt, J. A. (Jeffrey A.), Nowak, J. A. (Jonathan A.), Song, M. (Mingyang), Giannakis, M. (Marios), Ogino, S. (Shuji), Ugai, T. (Tomotaka), Shimizu, T. (Takashi), Kawamura, H. (Hidetaka), Ugai, S. (Satoko), Takashima, Y. (Yasutoshi), Usui, G. (Genki), Väyrynen, J. P. (Juha P.), Okadome, K. (Kazuo), Haruki, K. (Koichiro), Akimoto, N. (Naohiko), Masugi, Y. (Yohei), da Silva, A. (Annacarolina), Mima, K. (Kosuke), Zhang, X. (Xuehong), Chan, A. T. (Andrew T.), Wang, M. (Molin), Garrett, W. S. (Wendy S.), Freeman, G. J. (Gordon J.), Meyerhardt, J. A. (Jeffrey A.), Nowak, J. A. (Jonathan A.), Song, M. (Mingyang), Giannakis, M. (Marios), and Ogino, S. (Shuji)
- Abstract
Objectives: The CD274 (programmed cell death 1 ligand 1, PD-L1)/PDCD1 (programmed cell death 1, PD-1) immune checkpoint axis is known to regulate the antitumor immune response. Evidence also supports an immunosuppressive effect of Fusobacterium nucleatum. We hypothesised that tumor CD274 overexpression might be inversely associated with abundance of F. nucleatum in colorectal carcinoma. Methods: We assessed tumor CD274 expression by immunohistochemistry and F. nucleatum DNA within tumor tissue by quantitative PCR in 812 cases among 4465 incident rectal and colon cancer cases that had occurred in two prospective cohort studies. Multivariable logistic regression analyses with inverse probability weighting were used to adjust for selection bias because of tissue data availability and potential confounders including microsatellite instability status, CpG island methylator phenotype, LINE-1 methylation level and KRAS, BRAF and PIK3CA mutations. Results: Fusobacterium nucleatum DNA was detected in tumor tissue in 109 (13%) cases. Tumor CD274 expression level was inversely associated with the amount of F. nucleatum in colorectal cancer tissue (P = 0.0077). For one category-unit increase in three ordinal F. nucleatum categories (negative vs. low vs. high), multivariable-adjusted odds ratios (with 95% confidence interval) of the low, intermediate and high CD274 categories (vs. negative) were 0.78 (0.41–1.51), 0.64 (0.32–1.28) and 0.50 (0.25–0.99), respectively (Ptrend = 0.032). Conclusions: Tumor CD274 expression level was inversely associated with the amount of F. nucleatum in colorectal cancer tissue, suggesting that different immunosuppressive mechanisms (i.e. PDCD1 immune checkpoint activation and tumor F. nucleatum enrichment) tend to be used by different tumor subgroups.
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- 2023
5. High-fidelity spin readout via the double latching mechanism
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Haruki Kiyama, Danny van Hien, Arne Ludwig, Andreas D. Wieck, and Akira Oiwa
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Physics ,QC1-999 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Abstract Projective measurement of single-electron spins, or spin readout, is among the most fundamental technologies for spin-based quantum information processing. Implementing spin readout with both high-fidelity and scalability is indispensable for developing fault-tolerant quantum computers in large-scale spin-qubit arrays. To achieve high fidelity, a latching mechanism is useful. However, the fidelity can be decreased by spin relaxation and charge state leakage, and the scalability is currently challenging. Here, we propose and demonstrate a double-latching high-fidelity spin readout scheme, which suppresses errors via an additional latching process. We experimentally show that the double-latching mechanism provides significantly higher fidelity than the conventional latching mechanism and estimate a potential spin readout fidelity of 99.94% using highly spin-dependent tunnel rates. Due to isolation from error-inducing processes, the double-latching mechanism combined with scalable charge readout is expected to be useful for large-scale spin-qubit arrays while maintaining high fidelity.
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- 2024
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6. Vascular access in a post-lung transplant patient on maintenance hemodialysis: a case report
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Mariko Kawamura, Motonobu Nakamura, Ryo Matsuura, Motoki Odawara, Yu Kurata, Midori Sakashita, Daisuke Yamada, Yoshifumi Hamasaki, Chihiro Konoeda, Masaaki Sato, Haruki Kume, and Masaomi Nangaku
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Vascular access ,Pulmonary hypertension ,Hemodialysis ,Lung transplantation ,Case report ,Arteriovenous fistula ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background An arteriovenous fistula (AVF) is the most common type of vascular access for hemodialysis. As it causes volume overload and sometimes increases pulmonary artery pressure, it is unsuitable for some patients. Herein, we describe a patient with acute kidney disease who required maintenance hemodialysis with vascular access other than an AVF owing to post-lung transplant pulmonary hypertension. Case presentation A 50-year-old man with interstitial pneumonia underwent living-donor lobar lung transplantation at our hospital. Weaning from venoarterial extracorporeal membrane oxygenation was achieved; however, the patient required mechanical ventilation owing to pulmonary hypertension. He developed acute kidney disease and required maintenance hemodialysis with sustainable vascular access. Although echocardiography showed a normal ejection fraction, we expected volume overload after arteriovenous access construction to worsen his pulmonary hypertension because of his inadequate pulmonary vascular bed. Therefore, a tunneled central vein catheter was implanted into the right femoral vein as a bridge, and superficialization of the right brachial artery was performed for long-term vascular access. Conclusions As this patient had sustained post-transplant pulmonary hypertension and small grafts, we avoided creating arteriovenous access because of concern over the aggravation of pulmonary hypertension. Evaluation of right heart function and pulmonary hypertension is important before arteriovenous access construction.
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- 2024
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7. Retzius-Sparing Robot-Assisted Radical Prostatectomy Using the Hinotori Surgical Robot System Platform: Report of the First Series of Experiences
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Yuta Yamada, Shigenori Kakutani, Yoichi Fujii, Naoki Kimura, Yuji Hakozaki, Jun Kamei, Satoru Taguchi, Aya Niimi, Daisuke Yamada, and Haruki Kume
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hinotori ,Retzius-sparing robot-assisted radical prostatectomy ,rs-RARP ,radical prostatectomy ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: The aim of this study is to describe the first series of six patients undergoing Retzius-sparing robot-assisted radical prostatectomy (rs-RARP) using the hinotori surgical robot system (hinotori SRS) and to compare the treatment outcomes with those achieved with the da Vinci surgical platform. Methods: This study included 20 cases involving the rs-RARP procedure (hinotori: N = 6; da Vinci: N = 14) that were performed between May 2021 and April 2024 in a single institution. Results: No significant differences were observed between the hinotori and da Vinci groups regarding the preoperative findings. In the hinotori group, there were four cases of pT2 that showed negative surgical margins in all the cases. However, positive surgical margins were observed in two of the cases with pT3. The surgical outcomes were also similar between the two groups except for console time, which tended to be shorter in the da Vinci group (p = 0.058). There were no major complications in the initial six cases with the hinotori SRS. Immediate urinary continence was observed in 50% of the cases with the hinotori group compared with 64% for the da Vinci group. Conclusion: This is the first study to report cases of rs-RARP performed on a hinotori SRS. It seems that the hinotori SRS shows similar treatment outcomes compared with the cases treated via the da Vinci platform.
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- 2024
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8. Exploring the relationship between anorexia and therapeutic efficacy in advanced lung cancer treatment: a retrospective study
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Kosei Doshita, Tateaki Naito, Suguru Matsuda, Meiko Morita, Motoki Sekikawa, Keita Miura, Hiroaki Kodama, Michitoshi Yabe, Noboru Morikawa, Yuko Iida, Nobuaki Mamesaya, Haruki Kobayashi, Ryo Ko, Kazushige Wakuda, Akira Ono, Haruyasu Murakami, Hirotsugu Kenmotsu, and Toshiaki Takahashi
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anorexia ,chemotherapy ,immune checkpoint inhibitors ,non‐small cell lung cancer ,treatment efficacy ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Chemotherapy‐induced anorexia is a common occurrence in patients undergoing treatment for advanced lung cancer. However, the relationship between chemotherapy‐induced anorexia and weight loss during platinum‐based chemotherapy combined with immune checkpoint inhibitors is unclear. This study explored the relationship between chemotherapy‐induced anorexia and therapeutic outcomes in patients with stage IV non‐small‐cell lung cancer undergoing platinum‐based chemotherapy combined with immune checkpoint inhibitors. Methods The study retrospectively reviewed the medical records of 106 patients with stage IV non‐small‐cell lung cancer treated with platinum‐based chemotherapy and immune checkpoint inhibitors between January 2019 and October 2022. The incidence of weight loss and its association with treatment efficacy was assessed in the chemotherapy‐induced anorexia group. Chemotherapy‐induced anorexia, nausea, and vomiting were evaluated using Common Terminology Criteria for Adverse Events v 5.0. Progression‐free and overall survival were used to measure treatment efficacy. Results Chemotherapy‐induced anorexia was observed in 13.2% of patients. These patients exhibited significant weight loss at 6 and 9 weeks after treatment initiation compared to those in the non‐chemotherapy‐induced anorexia group. Progression‐free and overall survival were shorter in the chemotherapy‐induced anorexia group than in the non‐chemotherapy‐induced anorexia group, but the difference was not statistically significant. Conclusions Chemotherapy‐induced anorexia was associated with significant weight loss and reduced treatment efficacy in patients with stage IV non‐small‐cell lung cancer. These results highlight the importance of implementing robust supportive care for chemotherapy‐induced anorexia to mitigate weight loss and uphold treatment effectiveness during platinum‐based chemotherapy combined with immune checkpoint inhibitors.
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- 2024
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9. A giant pelvic arteriovenous malformation
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Taro Izumi, Marie Osawa, Ibuki Tsuru, Akihiro Ono, Haruki Kume, Yoshiyuki Shiga, and Masaki Nakamura
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angiography ,dehydrated ethanol ,embolization ,pelvic arteriovenous malformation ,seminal vesicle ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Pelvic arteriovenous malformations are rare in male patients. We present a case of pelvic arteriovenous malformation involving the seminal vesicle. Case presentation A 58‐year‐old man was diagnosed with pelvic arteriovenous malformation that involved the left seminal vesicle by angiography. The patient underwent three embolization procedures and made favorable progress after the embolizations. Conclusion Herein, we report a rare case of pelvic arteriovenous malformation involving the seminal vesicle treated by embolizations with good outcome.
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- 2024
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10. Oncologic and Functional Outcomes of Salvage Robot-Assisted Radical Prostatectomy: Report of the First 10 Cases
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Takahiro Oshina, Yuta Yamada, Tetsuya Fujimura, Satoru Taguchi, Yoshiyuki Akiyama, Jun Kamei, Tomoyuki Kaneko, Taketo Kawai, Daisuke Obinata, Daisuke Yamada, Hiroshi Fukuhara, Tohru Nakagawa, Satoru Takahashi, and Haruki Kume
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salvage radical prostatectomy ,robot-assisted radical prostatectomy ,prostatectomy ,radiotherapy ,focal therapy ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: Salvage robot-assisted radical prostatectomy (sRARP) after PSA failure in patients who underwent initial radiotherapy or focal therapy has rarely been reported in Japan. We aimed to report the oncologic and functional outcomes of the first 10 cases of sRARP. Methods: Ten patients underwent sRARP after failing to respond to initial radiotherapy or focal therapy. Initial definitive treatment included volumetric modulated arc therapy, intensity-modulated radio therapy, stereotactic body radiotherapy, heavy-ion radiotherapy, low-dose-rate brachytherapy, and high-intensity focused ultrasound. We retrospectively investigated 10 cases on oncologic and functional outcomes of sRARP. Results: The median PSA level at sRARP, amount of blood loss, and console time were 2.17 ng/mL, 100 mL, and 136 min, respectively. Positive surgical margins were found in half of the cases. Median follow-up was 1.1 years. There were no 30-day major complications. No patients had erections after sRARP. Urinary continence and biochemical recurrence (BCR) rate were 40% and 30% at 1 year after sRARP, respectively. Conclusions: Salvage RARP may be a feasible option after PSA failure in patients who underwent radiotherapy or focal therapy as initial treatment, showing acceptable BCR rate.
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- 2024
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11. Role of immunomodulatory probiotics in alleviating bacterial diarrhea in piglets: a systematic review
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Sudeb Saha, Fu Namai, Keita Nishiyama, Julio Villena, and Haruki Kitazawa
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Clostridium ,Diarrhea ,E. coli ,Immunomodulatory effect ,Piglets ,Probiotics ,Animal culture ,SF1-1100 ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Diarrhea is a common enteric disease in piglets that leads to high mortality and economic losses in swine production worldwide. Antibiotics are commonly used to prevent or treat diarrhea in piglets. However, irrational antibiotic use contributes to the development of resistance in bacteria and antibiotic residues in animal products, threatening public health, while causing gut microbiota dysbiosis and antibiotic-resistant bacterial infection in piglets. Therefore, the quest for alternative products (such as probiotics, prebiotics, organic acids, enzymes, essential oils, medium-chain fatty acids, zinc, and plant extracts) has recently been clearly emphasized through the increase in regulations regarding antibiotic use in livestock production. These antibiotic alternatives could lower the risk of antibiotic-resistant bacteria and meet consumer demand for antibiotic-free food. Several antibiotic alternatives have been proposed, including immunomodulatory probiotics, as candidates to reduce the need for antimicrobial therapy. Many studies have revealed that probiotics can avert and cure bacterial diarrhea by regulating the gut function and immune system of piglets. In this review, we focus on the major pathogenic bacteria causing piglet diarrhea, the research status of using probiotics to prevent and treat diarrhea, their possible mechanisms, and the safety issues related to the use of probiotics. Supplementation with probiotics is a possible alternative to antibiotics for the prevention or treatment of bacterial diarrhea in piglets. Furthermore, probiotics exert beneficial effects on feed efficiency and growth performance of piglets. Therefore, appropriate selection and strategies for the use of probiotics may have a positive effect on growth performance and also reduce diarrhea in piglets. This review provides useful information on probiotics for researchers, pig nutritionists, and the additive industry to support their use against bacterial diarrhea in piglets. Graphical Abstract Interaction of probiotics with the gut associated immune system. TLRS, Toll-like receptors; MAPK, Mitogen-activated protein kinases; TRAF, Tumor necrosis factor receptor-associated factor; DC, Dendritic cells; MP, Macrophages; NT, Naïve T cell; IL-10, Interleukin 10 proteins; Tregs, Regulatory T cells; Th1, Type 1 T helper cells; Th2, Type 2 T helper cells; Th17, Type 17 T helper cells; SIgA, Secretory immunoglobulin A; TJs, Tight junctions.
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- 2024
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12. Modulation of the Toll-like Receptor 3-Mediated Intestinal Immune Response by Water Kefir
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Stefania Dentice Maidana, Ramiro Ortiz Moyano, Mariano Elean, Yoshiya Imamura, Leonardo Albarracín, Fu Namai, Yoshihito Suda, Keita Nishiyama, Julio Villena, and Haruki Kitazawa
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intestinal antiviral immunity ,water kefir ,TLR3-mediated inflammation ,Microbiology ,QR1-502 - Abstract
Kefir has been associated with beneficial effects on its host’s health. The previous works examining the impact of kefir on the immune system focused on milk kefir or the exopolysaccharides and bacterial strains derived from it, while water kefir has not been evaluated. Furthermore, studies have focused on kefir’s ability to modulate immune system hemostasis and exert anti-inflammatory effects, while its specific action on antiviral immunity has not been investigated. Thus, the aim of this work was to examine the potential immunomodulatory effects of water kefir on the intestinal innate antiviral immunity mediated by Toll-like receptor-3 (TLR3). Adult BALB/c mice fed water kefir ad libitum, diluted 1:5, 1:10, or 1:20 in the drinking water, for 6 consecutive days. On day 7, the treated groups and the untreated control mice received an intraperitoneal injection of the TLR3 agonist poly(I:C). Two days after the TLR3 activation, the intestinal damage and the innate immune response were studied. The intraperitoneal administration of poly(I:C) induced inflammatory-mediated intestinal tissue damage, characterized by the upregulation of interferons (IFNs), pro-inflammatory mediators (TNF-α, IL-15, IL-6), and factors involved in epithelial destruction (RAE-1 and NKG2D). The histological analysis of small intestinal samples showed that mice receiving water kefir 1:5 exhibited reduced edema and a lower inflammatory cell infiltration. Kefir-treated mice had significantly lower levels of serum LDH, AST, and ALT as well as intestinal TNF-α, IL-15, IL-6, RAE-1, and NKG2D. This group also showed higher concentrations of intestinal IFN-β, IFN-γ, and IL-10. The treatment with 1:10 of water kefir reduced intestinal damage and modulated cytokines but its effect was significantly lower than the 1:5 treatment, while the water kefir 1:20 did not modify the parameters evaluated compared to control mice. The results indicate that water kefir exerts its immunomodulatory effects in a dose-dependent manner. The in vivo studies allow us to speculate that water kefir can induce two beneficial effects on the intestinal TLR3-mediated immune response: the enhancement of antiviral defenses and the protection against the inflammatory-mediated tissue damage. These protective effects of water kefir require further exploration to understand how water kefir, or its specific molecules/strains, can influence the immune response and to determine the extent of its protection against a real viral challenge.
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- 2024
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13. Suitability of frozen cell pellets from cytology specimens for the Amoy 9‐in‐1 assay in patients with non‐small cell lung cancer
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Hiroaki Kodama, Haruyasu Murakami, Nobuaki Mamesaya, Haruki Kobayashi, Shota Omori, Kazushige Wakuda, Ryo Ko, Akira Ono, Hirotsugu Kenmotsu, Tateaki Naito, Shingo Matsumoto, Koichi Goto, Tetsuo Shimizu, Yasuhiro Gon, and Toshiaki Takahashi
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cell pellet ,cytology specimen ,non‐small cell lung cancer ,oncogenic driver alteration ,real‐time polymerase chain reaction ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background The AmoyDx Pan lung cancer PCR panel (AmoyDx PLC panel) has been approved as a companion diagnostic tool for multiple anticancer agents in patients with non‐small cell lung cancer (NSCLC). However, the suitability of cytology specimens as samples for the AmoyDx PLC panel remains unclear. We evaluated the performance of frozen cell pellets from cytology specimens (FCPs) in the Amoy 9‐in‐1 assay, a preapproval assay of the AmoyDx PLC panel. Methods We retrospectively collected data of NSCLC patients enrolled in LC‐SCRUM‐Asia from the Shizuoka Cancer Center between September 2019 and May 2021. Results A total of 49 cases submitted FCPs for evaluation of oncogenic driver alterations and were assessed using Amoy 9‐in‐1 and next‐generation sequencing (NGS) assays. The success rates of DNA and RNA analyses using the Amoy 9‐in‐1 were both 100%, compared with 86% and 45%, respectively, using NGS assays. Oncogenic driver alterations were detected in 27 (55%) and 23 (47%) patients using Amoy 9‐in‐1 and NGS, respectively. No inconsistent results were observed among 19 cases in which both assays showed successful detection. In the remaining 30 cases, 10 had inconsistent results: nine oncogenic driver alterations (3 MET, 2 ALK, 2 ROS1, and 2 KRAS) were detectable only in Amoy 9‐in‐1, and one epidermal growth factor receptor (EGFR) mutation was detectable only in NGS. Conclusion FCPs can be successfully used in the AmoyDx PLC panel, with higher success rate compared with the NGS assay. The AmoyDx PLC panel may be an option in cases when insufficient tissue sample is available for the NGS assay.
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- 2024
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14. Lipoprotein glomerulopathy with markedly increased arterial stiffness successfully treated with a combination of fenofibrate and losartan: a case report
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Junichiro Kato, Hideo Okonogi, Go Kanzaki, Haruki Katsumata, Yasuyuki Nakada, Makoto Sagasaki, Kazumasa Komine, Kenji Ito, Takao Saito, Akira Matsunaga, Koh Tokutou, Kazuho Honda, Nobuo Tsuboi, and Takashi Yokoo
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Lipoprotein glomerulopathy ,Apolipoprotein E ,Oil Red O ,Sudan IV ,Triglyceride ,Fibrate ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background Lipoprotein glomerulopathy (LPG) is a apolipoprotein E (ApoE)-related glomerular disease and has been associated with type III hyperlipidemia. Without appropriate treatment, chronic kidney disease (CKD) caused by LPG progresses, and approximately half of the patients develop end-stage kidney disease within 1–27 years of disease onset. However, few studies have highlighted the clinical course of cardiovascular diseases (CVDs) in patients with LPG. Herein, we report the first case of LPG in which the CVD risk was assessed using arterial stiffness. Case presentation A 32-year-old Japanese man was referred to our hospital due to persistent proteinuria. Kidney biopsy showed markedly dilated capillary lumens containing pale-stained thrombi, which stained positively with Oil Red O. Electron microscopy revealed the presence of thrombi in the capillary lumen with low electron density and vacuoles of various sizes in part of the thrombi. Toluidine blue and Sudan IV stains were used to stain the thin sections of Epon-embedded tissue samples for electron microscopy. Sudan IV-positive droplets were observed in the capillary lumens, vascular walls, and cytoplasm of tubular cells. Increased serum ApoE concentration was observed. Liquid chromatography-tandem mass spectrometry of laser-microdissected glomeruli from paraffin sections revealed an increase in ApoE. Direct deoxyribonucleic acid sequencing of ApoE revealed a heterozygous ApoE Sendai mutation (Arg145Pro). The patient was finally diagnosed with LPG with heterozygosity for ApoE-Sendai mutation (Arg145Pro). Notably, at the time of diagnosis, he had markedly increased arterial stiffness for his age. Arterial stiffness was measured using brachial-ankle pulse wave velocity (baPWV), which was equivalent to that of a 56-year-old man. After three months of treatment with fenofibrate and losartan, a significant reduction in proteinuria was achieved along with an improvement in baPWV. Furthermore, these effects were maintained despite the lack of decrease in serum ApoE levels. Conclusion Herein, we report the case of a patient with LPG with markedly increased arterial stiffness at the time of diagnosis, in whom combination therapy with fenofibrate and losartan successfully improved proteinuria and arterial stiffness. To the best of our knowledge, this is the first case report of LPG in which CVD risk was assessed using arterial stiffness.
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- 2024
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15. Preference of position in the proximity of various sugars revealed by location analysis of Drosophila melanogaster
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Haruki Kato, Hiroyuki Nakagawa, Chiaki Ishizaki, Jun Tomita, and Kazuhiko Kume
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Position preference ,Nutrition ,Starvation ,Locomotor activity ,Food selectivity ,Medicine ,Science - Abstract
Abstract Feeding behaviors are determined by two main factors. One is the internal state, such as hunger or previous experiences; the other is external factors, such as sensory stimulation. During starvation, animals must balance food-seeking behavior with energy conservation. The fruit fly, Drosophila melanogaster, serves as a useful model for studying food selectivity and various behaviors related to food intake. However, few studies have directly connected food selectivity with other behaviors, such as locomotor activity and sleep. In this study, we report that flies exhibited a preference for specific positions and spent more time in the proximity of sweet sugars, such as sucrose and sucralose, but not non-sweet and nutritious sugars like xylitol and sorbitol. On the other hand, prolonged exposure to sorbitol increased the staying time of flies in the proximity of sorbitol. Additionally, after starvation, flies immediately exhibited a position preference in the proximity of sorbitol. These findings suggest that flies prefer the proximity of sweet food, and starvation alters their preference for nutritious food, which may be beneficial for their survival.
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- 2024
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16. Spatial organization and prognostic significance of NK and NKT-like cells via multimarker analysis of the colorectal cancer microenvironment
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Väyrynen, J. P. (Juha P.), Haruki, K. (Koichiro), Lau, M. C. (Mai Chan), Väyrynen, S. A. (Sara A.), Ugai, T. (Tomotaka), Akimoto, N. (Naohiko), Zhong, R. (Rong), Zhao, M. (Melissa), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Bell, P. (Phoenix), Takashima, Y. (Yasutoshi), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Kishikawa, J. (Junko), Shi, S.-s. (Shan-shan), Twombly, T. S. (Tyler S.), Song, M. (Mingyang), Wu, K. (Kana), Chan, A. T. (Andrew T.), Zhang, X. (Xuehong), Fuchs, C. S. (Charles S.), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Ogino, S. (Shuji), Nowak, J. A. (Jonathan A.), Väyrynen, J. P. (Juha P.), Haruki, K. (Koichiro), Lau, M. C. (Mai Chan), Väyrynen, S. A. (Sara A.), Ugai, T. (Tomotaka), Akimoto, N. (Naohiko), Zhong, R. (Rong), Zhao, M. (Melissa), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Bell, P. (Phoenix), Takashima, Y. (Yasutoshi), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Kishikawa, J. (Junko), Shi, S.-s. (Shan-shan), Twombly, T. S. (Tyler S.), Song, M. (Mingyang), Wu, K. (Kana), Chan, A. T. (Andrew T.), Zhang, X. (Xuehong), Fuchs, C. S. (Charles S.), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Ogino, S. (Shuji), and Nowak, J. A. (Jonathan A.)
- Abstract
Although tumor-infiltrating T cells hold a beneficial prognostic role in colorectal cancer, other lymphocytic populations are less characterized. We developed a multiplexed immunofluorescence assay coupled with digital image analysis and machine learning to identify natural killer (NK) cells (NCAM1+CD3⁻), natural killer T-like (NKT-like) cells (NCAM1⁺CD3⁺), and T cells (NCAM1⁻CD3⁺) within the PTPRC⁺ (CD45⁺) cell population and to measure their granzyme B (GZMB; cytotoxicity marker) and FCGR3A (CD16a; NK-cell maturity marker) expression. We evaluated immune cell densities and spatial configuration in 907 incident colorectal carcinoma cases within two prospective cohort studies. We found that T cells were approximately 100 times more abundant than NK and NKT-like cells. Overall, NK cells showed high GZMB expression and were located closer to tumor cells than T and NKT-like cells. In T and NKT-like cells, GZMB expression was enriched in cells in closer proximity to tumor cells. Higher densities of both T and NKT-like cells associated with longer cancer-specific survival, independent of potential confounders (Ptrend < 0.0007). Higher stromal GZMB+ and FCGR3A+ NK-cell densities associated with longer cancer-specific survival (Ptrend < 0.003). For T and NKT-like cells, greater proximity to tumor cells associated with longer cancer-specific survival (Ptrend < 0.0001). These findings indicate that cytotoxic NCAM1⁺CD3⁻GZMB⁺ NK cells and NCAM1vCD3v NKT-like cells are relatively rare lymphocytic populations within the colorectal cancer microenvironment and show distinct spatial configuration and associations with patient outcome. The results highlight the utility of a quantitative multimarker assay for in situ, single-cell immune biomarker evaluation and underscore the importance of spatial context for tumor microenvironment characterization.
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- 2022
17. Desmoplastic reaction, immune cell response, and prognosis in colorectal cancer
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Akimoto, N. (Naohiko), Väyrynen, J. P. (Juha P.), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Fujiyoshi, K. (Kenji), Borowsky, J. (Jennifer), Zhong, R. (Rong), Haruki, K. (Koichiro), Arima, K. (Kota), Lau, M. C. (Mai Chan), Kishikawa, J. (Junko), Twombly, T. S. (Tyler S.), Takashima, Y. (Yasutoshi), Song, M. (Mingyang), Zhang, X. (Xuehong), Wu, K. (Kana), Chan, A. T. (Andrew T.), Meyerhard, J. A. (Jeffrey A.), Giannakis, M. (Marios), Nowak, J. A. (Jonathan A.), Ogino, S. (Shuji), Akimoto, N. (Naohiko), Väyrynen, J. P. (Juha P.), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Fujiyoshi, K. (Kenji), Borowsky, J. (Jennifer), Zhong, R. (Rong), Haruki, K. (Koichiro), Arima, K. (Kota), Lau, M. C. (Mai Chan), Kishikawa, J. (Junko), Twombly, T. S. (Tyler S.), Takashima, Y. (Yasutoshi), Song, M. (Mingyang), Zhang, X. (Xuehong), Wu, K. (Kana), Chan, A. T. (Andrew T.), Meyerhard, J. A. (Jeffrey A.), Giannakis, M. (Marios), Nowak, J. A. (Jonathan A.), and Ogino, S. (Shuji)
- Abstract
Background: The relationships between tumor stromal features (such as desmoplastic reaction, myxoid stroma, and keloid-like collagen bundles) and immune cells in the colorectal carcinoma microenvironment have not yet been fully characterized. Methods: In 908 tumors with available tissue among 4,465 incident colorectal adenocarcinoma cases in two prospective cohort studies, we examined desmoplastic reaction, myxoid stroma, and keloid-like collagen bundles. We conducted multiplex immunofluorescence for T cells [CD3, CD4, CD8, CD45RO (PTPRC), and FOXP3] and for macrophages [CD68, CD86, IRF5, MAF, and MRC1 (CD206)]. We used the inverse probability weighting method and the 4,465 incident cancer cases to adjust for selection bias. Results: Immature desmoplastic reaction was associated with lower densities of intraepithelial CD3⁺CD8⁺CD45RO⁺ cells [multivariable odds ratio (OR) for the highest (vs. lowest) density category, 0.43; 95% confidence interval (CI), 0.29–0.62; Ptrend <0.0001] and stromal M1-like macrophages [the corresponding OR, 0.44; 95% CI, 0.28–0.70; Ptrend = 0.0011]. Similar relations were observed for myxoid stroma [intraepithelial CD3⁺CD8⁺CD45RO⁺ cells (Ptrend <0.0001) and stromal M1-like macrophages (Ptrend = 0.0007)] and for keloid-like collagen bundles (Ptrend <0.0001 for intraepithelial CD3⁺CD8⁺CD45RO⁺ cells). In colorectal cancer-specific survival analyses, multivariable-adjusted hazard ratios (with 95% confidence intervals) were 0.32 (0.23–0.44; Ptrend <0.0001) for mature (vs. immature) desmoplastic reaction, 0.25 (0.16–0.39; Ptrend <0.0001) for absent (vs. marked) myxoid stroma, and 0.12 (0.05–0.28; Ptrend <0.0001) for absent (vs. marked) keloid-like collagen bundles. Conclusions: Immature desmoplastic reaction and myxoid stroma were associated with lower densities of tumor intraepithelial memory cytotoxic T cells and stromal M1-like macrophages, likely reflecting interactions between tumor, immune, and stromal cells in the
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- 2022
18. Prognostic Impact of Postoperative Recurrence in Patients With Epidermal Growth Factor Receptor–Positive Non‐Small Cell Lung Cancer
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Meiko Morita, Akira Ono, Motoki Sekikawa, Kosei Doshita, Keita Miura, Hiroaki Kodama, Michitoshi Yabe, Noboru Morikawa, Yuko Iida, Nobuaki Mamesaya, Haruki Kobayashi, Ryo Ko, Kazushige Wakuda, Hirotsugu Kenmotsu, Tateaki Naito, Haruyasu Murakami, Mitsuhiro Isaka, Yasuhisa Ohde, and Toshiaki Takahashi
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EGFR ,non‐small cell lung cancer ,oligometastasis ,postoperative recurrence ,prognostic factors ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
ABSTRACT Background Mutations in the epidermal growth factor receptor (EGFR) gene are the most common targetable gene alterations in non‐small cell lung cancer (NSCLC). In Japan, approximately 40% of patients who undergo surgical resection for non‐squamous NSCLC have EGFR mutations. However, no long‐term studies have been conducted including a large number of EGFR‐positive NSCLC patients with postoperative recurrence (PR). Methods We conducted a retrospective observational study of the data of EGFR‐positive NSCLC patients with PR who had undergone surgery at the Shizuoka Cancer Center between October 2002 and November 2017. We evaluated post‐recurrence overall survival (PRS) and postoperative overall survival (POS) using the Kaplan–Meier method and identify any associations between the clinical variables at recurrence and PRS using univariate and multivariate analysis. Results We enrolled 162 patients. The median observation time for PRS was 4.95 years (range, 0.82–13.25) and POS was 5.81 years (range, 2.84–16.71). The median PRS was 5.17 years (95% confidence interval [CI], 3.90–5.61) and POS was 7.07 years (95% CI, 5.88–8.01). Univariate analysis identified male sex (median PRS: 3.32 vs. 5.39 years; p
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- 2024
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19. Effect of Lactiplantibacillus plantarum cell-free culture on bacterial pathogens isolated from cystic fibrosis patients: in vitro and in vivo studies
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Carla Luciana Abán, Silvia Orosco, Julio Nicolás Argañaraz Aybar, Leonardo Albarracín, Analía Venecia, Liliana Perret, Sonia Ortiz Mayor, Keita Nishiyama, Juan Carlos Valdéz, Haruki Kitazawa, Julio Villena, and Nadia Gobbato
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Lactiplantibacillus plantarum ,supernatant ,respiratory infection ,Pseudomonas aeruginosa ,cystic fibrosis ,Microbiology ,QR1-502 - Abstract
This study aimed to investigate the effects of the cell-free supernatant of Lactiplantibacillus plantarum ATCC® 10241TM on the biofilm-forming capacity of Pseudomonas aeruginosa strains isolated from cystic fibrosis (CF) patients. In addition, the study evaluated the in vivo potential of the cell-free supernatant to modulate inflammation and reduce lung damage in mice infected with P. aeruginosa strains or co-challenged with P. aeruginosa and the Streptococcus milleri group (SMG). The results showed that CF-derived P. aeruginosa strains can infect the respiratory tract of adult mice, inducing local inflammation and lung damage. The severity of these infections was exacerbated when P. aeruginosa was co-administered with SMG. Notably, nebulization with the cell-free supernatant of L. plantarum produced beneficial effects, reducing respiratory infection severity and inflammatory responses induced by P. aeruginosa, both alone or in combination with SMG. Reduced bacterial loads and lung damage were observed in supernatant-treated mice compared to controls. Although further mechanistic studies are necessary, the results show that the cell-free supernatant of L. plantarum ATCC® 10241TM is an interesting adjuvant alternative to treat P. aeruginosa respiratory infections and superinfections in CF patients.
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- 2024
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20. Effect of nanosecond laser irradiation on tungsten grain structure
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Haotian Yang, Ryo Yasuhara, Hiroyuki Noto, Daisuke Nagata, Masayuki Tokitani, Haruki Kawaguchi, Chihiro Suzuki, Reina Miyagawa, and Hiyori Uehara
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Nanosecond laser processing ,Tungsten recrystallization ,Divertor ,EBSD analysis ,Nuclear engineering. Atomic power ,TK9001-9401 - Abstract
The laser-induced grain structure of pure tungsten was evaluated using a nanosecond Q-switched Nd:YAG laser. The grain structure, crystal orientation, and grain boundary angular distribution were analyzed through electron backscatter diffraction analysis, both before and after laser processing. The mechanical properties of pure tungsten after laser processing were also measured. The results obtained indicate that laser processing-induced recrystallization can offer micro-nano surface treatment of materials without compromising the mechanical properties.
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- 2024
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21. Comparison of PDD-TURBT alone versus white light TURBT plus intravesical BCG therapy: A propensity-score matching study
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Jimpei Miyakawa, Yuta Yamada, Yuji Hakozaki, Katsuhiro Makino, Jun Kamei, Satoru Taguchi, Taketo Kawai, Yoshiyuki Akiyama, Daisuke Yamada, and Haruki Kume
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5-aminolevulinic acid ,Photodynamic diagnosis ,BCG ,Propensity score matching ,Medicine (General) ,R5-920 - Abstract
Background: Although photodynamic-diagnosed transurethral resection of bladder cancer (PDD-TURBT) and Bacillus Calmette-Guérin (BCG) intravesical instillation are the two representative therapies for non-muscle invasive bladder cancer (NMIBC), no studies directly compare their efficacy. We evaluated the outcome of PDD-TURBT alone compared with white light TURBT with intravesical BCG therapy and analyzed the efficacy of both therapies depending on the characteristics of the tumors. Methods: We retrospectively analyzed intermediate- and high-risk NMIBC patients treated with PDD-TURBT alone (the PDD group) or white light TURBT with BCG therapy (the white light group) using propensity score matched analysis. Results: In the propensity score matched cohort, the 1-, 2-, and 3-year recurrence-free survival rates for the PDD group were 77.6 %, 64.1 %, and 48.1 %, respectively, compared to 84.6 %, 75.1 %, and 75.1 % for the white light group (p = 0.44, 0.27, 0.17, respectively). The difference in recurrence rates between the two groups tended to become more pronounced over time, although there was no significant difference. In the univariate and multivariate analysis, recurrence, multiplicity, and tumor grade were the significant prognostic factors of recurrence in the PDD group (p = 0.010, 0.047, 0.048, respectively). Long-term RFS was similar in the PDD and white light groups when the population was limited to the primary and single tumors, suggesting that PDD-TURBT alone may be sufficient in this spectrum of patients. Conclusions: PDD-TURBT alone is insufficient to control the long-term recurrence of bladder cancer but can be effective in selected cases such as primary and single tumors.
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- 2024
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22. Thoracic lymphangitis as an immune-related adverse event: a case report
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Haruki Kobayashi
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Immune-related adverse event ,Thoracic lymphangitis ,Non-small cell lung cancer ,Diseases of the respiratory system ,RC705-779 - Abstract
Abstract The efficacy of immune checkpoint inhibitors (ICIs) has been widely recognized in several cancers and is now being used in the perioperative setting for lung cancer. We recently encountered an immune-related adverse event that has not been previously reported: thoracic lymphangitis, which occurred after postoperative ICI treatment for lung cancer. The patient complained of breathlessness and her condition rapidly progressed to hypoxia grade 3. Chest computed tomography revealed significant lymphostasis. With high-dose steroid treatment, the patient showed improvement. Therefore, as the frequency of neoadjuvant, adjuvant, and perioperative ICI use is expected to increase, it is crucial to understand and monitor this adverse event.
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- 2024
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23. Efficacy of second-line chemotherapy in patients with pulmonary large cell neuroendocrine carcinoma
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Yuko Iida, Kazushige Wakuda, Hirotsugu Kenmotsu, Kosei Doshita, Hiroaki Kodama, Naoya Nishioka, Eriko Miyawaki, Taichi Miyawaki, Nobuaki Mamesaya, Haruki Kobayashi, Shota Omori, Ryo Ko, Akira Ono, Tateaki Naito, Haruyasu Murakami, Takashi Sugino, Yasuhiro Gon, and Toshiaki Takahashi
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Medicine ,Science - Abstract
Abstract The efficacy of second-line chemotherapy in patients with pulmonary large cell neuroendocrine carcinoma (LCNEC) is unclear. This study aimed to evaluate the efficacy of second-line chemotherapy in patients with pulmonary LCNEC. We retrospectively reviewed patients with pulmonary LCNEC or possible LCNEC (pLCNEC) who received platinum-based chemotherapy as the first-line treatment. Among these patients, we evaluated the efficacy of second-line treatment by comparing patients with small cell lung cancer (SCLC group). Of the 61 patients with LCNEC or pLCNEC (LCNEC group) who received first-line chemotherapy, 39 patients were treated with second-line chemotherapy. Among the 39 patients, 61.5% received amrubicin monotherapy. The median progression-free survival (PFS) and overall survival (OS) in the LCNEC groups were 3.3 and 8.3 months, respectively. No significant differences in the PFS (hazard ratio [HR]: 0.924, 95% confidence interval [CI] 0.647–1.320; P = 0.664) and OS (HR: 0.926; 95% CI 0.648–1.321; P = 0.670) were observed between the LCNEC and SCLC groups. In patients treated with amrubicin, the PFS (P = 0.964) and OS (P = 0.544) were not different between both the groups. Second-line chemotherapy, including amrubicin, may be considered as a treatment option for patients with pulmonary LCNEC.
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- 2024
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24. Development of risk-score model in patients with negative surgical margin after robot-assisted radical prostatectomy
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Yuta Yamada, Yoichi Fujii, Shigenori Kakutani, Naoki Kimura, Kazuma Sugimoto, Yuji Hakozaki, Toru Sugihara, Yuta Takeshima, Taketo Kawai, Masaki Nakamura, Jun Kamei, Satoru Taguchi, Yoshiyuki Akiyama, Yusuke Sato, Daisuke Yamada, Fumihiko Urabe, Hideyo Miyazaki, Yutaka Enomoto, Hiroshi Fukuhara, Tohru Nakagawa, Tetsuya Fujimura, and Haruki Kume
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Robot-assisted radical prostatectomy ,RARP ,Negative surgical margin ,Prostate cancer ,Non-metastatic ,Medicine ,Science - Abstract
Abstract A total of 739 patients underwent RARP as initial treatment for PCa from November 2011 to October 2018. Data on BCR status, clinical and pathological parameters were collected from the clinical records. After excluding cases with neoadjuvant and/or adjuvant therapies, presence of lymph node or distant metastasis, and positive SM, a total of 537 cases were eligible for the final analysis. The median follow-up of experimental cohort was 28.0 (interquartile: 18.0–43.0) months. We identified the presence of International Society of Urological Pathology grade group (ISUP-GG) ≥ 4 (Hazard ratio (HR) 3.20, 95% Confidence Interval (95% CI) 1.70–6.03, P 20 mm (HR 1.9, 95% CI 1.01–3.70, P = 0.047) as significant factors of BCR in the multivariate analysis. We further developed a risk model according to these factors. Based on this model, 1-year, 3-year, and 5-year BCR-free survival were 100%, 98.9%, 98.9% in the low-risk group; 99.1%, 94.1%, 86.5% in the intermediate-risk group; 93.9%, 84.6%, 58.1% in the high-risk group. Internal validation using the bootstrap method showed a c-index of 0.742 and an optimism-corrected c-index level of 0.731. External validation was also carried out using an integrated database derived from 3 other independent institutions including a total of 387 patients for the final analysis. External validation showed a c-index of 0.655. In conclusion, we identified risk factors of biochemical failure in patients showing negative surgical margin after RARP and further developed a risk model using these risk factors.
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- 2024
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25. Valence-isomer selective cycloaddition reaction of cycloheptatrienes-norcaradienes
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Shingo Harada, Hiroki Takenaka, Tsubasa Ito, Haruki Kanda, and Tetsuhiro Nemoto
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Science - Abstract
Abstract The rapid and precise creation of complex molecules while controlling multiple selectivities is the principal objective in synthetic chemistry. Combining data science and organic synthesis to achieve this goal is an emerging trend, but few examples of successful reaction designs are reported. We develop an artificial neural network regression model using bond orbital data to predict chemical reactivities. Actual experimental verification confirms cycloheptatriene-selective [6 + 2]-cycloaddition utilizing nitroso compounds and norcaradiene-selective [4 + 2]-cycloaddition reactions employing benzynes. Additionally, a one-pot asymmetric synthesis is achieved by telescoping the enantioselective dearomatization of non-activated benzenes and cycloadditions. Computational studies provide a rational explanation for the seemingly anomalous occurrence of thermally prohibited suprafacial [6 + 2]-cycloaddition without photoirradiation.
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- 2024
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26. Bilateral fumarate hydratase deficient renal cell carcinoma in a patient with hereditary leiomyomatosis and renal cell cancer syndrome
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Akihiro Ono, Masaki Nakamura, Takuya Takada, Sakiko Miura, Ibuki Tsuru, Taro Izumi, Masashi Kusakabe, Sachiko Mitarai, Yoji Nagashima, Haruki Kume, Teppei Morikawa, and Yoshiyuki Shiga
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fumarate hydratase ,hereditary leiomyomatosis and cancer ,nephrectomy ,renal cell ,renal cell carcinoma ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Patients with hereditary leiomyomatosis and renal cell cancer (HLRCC) syndrome have high risks of uterine and cutaneous leiomyomas and renal cell carcinoma (RCC), which are caused by germline mutation of the fumarate hydratase (FH) gene. RCC lesions are mostly high‐grade tumors with a poor prognosis. Case presentation A 37‐year‐old man who had previously undergone treatment for a left RCC was referred to our hospital with a diagnosis of right RCC. Robot‐assisted partial nephrectomy was performed, and the pathological diagnosis revealed fumarate hydratase (FH)‐deficient RCC. The left RCC, which was originally diagnosed as mucinous tubular and spindle cell carcinoma, was reviewed and diagnosed as FH‐deficient RCC. The patient's father and uncle both died of RCC, and the father's tumor was also immunohistochemically proven to be FH‐deficient RCC. Conclusion HLRCC‐related RCC should be considered in a differential diagnosis of young patients with a family history of RCC.
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- 2024
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27. Genetic aspects of immunoglobulins and cyclophilin A in milk as potential indicators of mastitis resistance in Holstein cows
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Yoshinobu Uemoto, Teppei Katsura, Yuma Endo, Koutaro Tanaka, Tao Zhuang, Megumi Urakawa, Toshimi Baba, Gaku Yoshida, Haifei Wang, Haruki Kitazawa, Hitoshi Shirakawa, Takehiko Nakamura, Tomonori Nochi, and Hisashi Aso
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cyclophilin A ,genetic parameter ,immunoglobulins ,somatic cell score ,Dairy processing. Dairy products ,SF250.5-275 ,Dairying ,SF221-250 - Abstract
ABSTRACT: Mastitis is one of the most frequent and costly diseases affecting dairy cattle. Natural antibodies (immunoglobulins) and cyclophilin A (CyPA), the most abundant member of the family of peptidyl prolyl cis/trans isomerases, in milk may serve as indicators of mastitis resistance in dairy cattle. However, genetic information for CyPA is not available, and knowledge on the genetic and nongenetic relationships between these immune-related traits and somatic cell score (SCS) and milk yield in dairy cattle is sparse. Therefore, we aimed to comprehensively evaluate whether immune-related traits consisting of 5 Ig classes (IgG, IgG1, IgG2, IgA, and IgM) and CyPA in the test-day milk of Holstein cows can be used as genetic indicators of mastitis resistance by evaluating the genetic and nongenetic relationships with SCS in milk. The nongenetic factors affecting immune-related traits and the effects of these traits on SCS were evaluated. Furthermore, the genetic parameters of immune-related traits according to health status and genetic relationships under different SCS environments were estimated. All immune-related traits were significantly associated with SCS and directly proportional. Additionally, evaluation using a classification tree revealed that IgA, IgG2, and IgG were associated with SCS levels. Genetic factor analyses indicated that heritability estimates were low for CyPA (0.08) but moderate for IgG (0.37), IgA (0.44), and IgM (0.44), with positive genetic correlations among Ig (0.25–0.96). We also evaluated the differences in milk yield and SCS of cows between the low and high groups according to their sires' estimated breeding value for immune-related traits. In the high group, IgA had a significantly lower SCS in milk at 7 to 30 d compared with that in the low group. Furthermore, the Ig in milk had high positive genetic correlations between healthy and infected conditions (0.82–0.99), suggesting that Ig in milk under healthy conditions could interact with those under infected conditions, owing to the genetic ability based on the level of Ig in milk. Thus, Ig in milk are potential indicators for the genetic selection of mastitis resistance. However, because only the relationship between immune-related traits and SCS was investigated in this study, further study on the relationship between clinical mastitis and Ig in milk is needed before Ig can be used as an indicator of mastitis resistance.
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- 2024
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28. A Comparison between Crossbred (Holstein × Local Cattle) and Bangladeshi Local Cattle for Body and Milk Quality Traits
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Sudeb Saha, Md. Nazmul Hasan, Md. Nazim Uddin, B. M. Masiur Rahman, Mohammad Mehedi Hasan Khan, Syed Sayeem Uddin Ahmed, and Haruki Kitazawa
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crossbreeding ,dairy cows ,body conformation ,milk production ,milk composition ,Dairy processing. Dairy products ,SF250.5-275 - Abstract
Crossbreeding in dairy cattle with exotic breeds continues to be an appealing practice to the dairy farmers of Bangladesh. However, there is limited knowledge regarding the impact of crossbreeding on both the physical attributes and milk quality traits of crossbred cattle in Bangladesh. Therefore, the primary objective of this study was to evaluate the impact of crossbreeding Bangladeshi local cattle with the exotic Holstein breed on their body characteristics and milk quality. To achieve the goal, data pertaining to body traits and milk samples were gathered from a total of 981 cows from 19 dairy farms located in the northwestern region of Bangladesh. A trained evaluator measured body condition score (BCS), udder score, locomotion score, and body conformation traits. Milk yield information was acquired from official records, while milk composition details were determined through milk analysis. Notably, crossbred cows (Holstein × Local cattle) exhibited greater values for wither height (141 vs. 135, cm), body length (157 vs. 153, cm), heart girth (211 vs. 204, cm), BCS (3.69 vs. 3.27), and udder score (3.29 vs. 2.08) than their Bangladeshi local counterparts. Furthermore, crossbred cows produced 42.4% and 35.3% more milk (10.89 vs. 7.65, kg/d) and fat-corrected milk (10.35 vs. 7.54, kg/d) than Bangladeshi local cattle. However, milk from crossbred cows displayed lower fat and protein content, although their somatic cell score (SCS) and energy-corrected milk remained similar. Additionally, milk from crossbred cows exhibited a longer coagulation time when compared to that of Bangladeshi local cattle. In conclusion, crossbred cows (Holstein × Local cattle) had improved body characteristics with greater milk yield than Bangladeshi local cattle; however, lower fat and protein contents in milk with longer coagulation time were noted.
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- 2024
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29. Relationship between patterns of immunohistochemical conventional neuroendocrine markers and efficacy of immune check point inhibitors in patients with extensive disease small cell lung cancer
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Yuko Iida, Kazushige Wakuda, Takuya Kawata, Meiko Morita, Motoki Sekikawa, Kosei Doshita, Michitoshi Yabe, Hiroaki Kodama, Keita Miura, Noboru Morikawa, Nobuaki Mamesaya, Haruki Kobayashi, Ryo Ko, Akira Ono, Hirotsugu Kenmotsu, Tateaki Naito, Haruyasu Murakami, Yasuhiro Gon, and Toshiaki Takahashi
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chemotherapy ,immune checkpoint inhibitor ,immunohistochemical ,neuroendocrine ,small cell lung cancer ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Which patients benefit from the addition of immune checkpoint inhibitors (ICIs) to chemotherapy for small cell lung cancer (SCLC) remains unclear. There have been few reports on the efficacy of ICIs based on conventional immunohistochemical neuroendocrine (NE) markers (synaptophysin, chromogranin A, and neural cell adhesion molecule [NCAM]). In the present study, we aimed to analyze the relationship between the expression of immunohistochemical NE markers and the efficacy of ICIs in patients with extensive disease (ED)‐SCLC, to assess whether conventional NE markers are predictive of ICIs. Methods Patients with untreated ED‐SCLC who received first‐line therapy at the Shizuoka Cancer Center between November 2002 and July 2021 were retrospectively reviewed. We evaluated the efficacy of first‐line chemotherapy according to the expression status of each immunohistochemical NE marker in patients treated with ICI plus chemotherapy (ICI‐chemo group) and with chemotherapy alone (chemo group). Results A total of 227 patients were included in the ICI‐chemo and chemo groups, respectively. The progression‐free survival (PFS) tended to be better in patients in the ICI‐chemo group than those treated with chemotherapy alone in patients with NE marker‐positive SCLC. In particular, it was statistically significant in patients with chromogranin A‐positive SCLC (p = 0.036). In patients with NE marker‐negative SCLC, no significant differences were observed in PFS between the two groups. There were no significant differences in overall survival (OS), regardless of the expression of any conventional NE marker. Conclusion Our study suggests that the efficacy of ICIs in addition to chemotherapy may be poor in patients with NE marker‐negative SCLC.
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- 2024
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30. Clinicopathological features of graft versus host disease‐associated myositis
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Tomoyuki Kazuta, Ayuka Murakami, Seiya Noda, Satoko Hirano, Hiroshi Kito, Koyo Tsujikawa, Hirotaka Nakanishi, Seigo Kimura, Kentaro Sahashi, Haruki Koike, and Masahisa Katsuno
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background and Objective Chronic graft versus host disease (GVHD)‐associated myositis targeting skeletal muscle is a relatively rare but potentially debilitating complication following allogeneic hematopoietic stem cell transplantation (HSCT). We reviewed the clinicopathological features of GVHD‐associated myositis among patients receiving allogeneic HSCT to elucidate the cellular pathogenesis. Methods We retrospectively reviewed clinical data and muscle biopsy results from 17 consecutive patients diagnosed with GVHD‐associated myositis at our institution between 1995 and 2019. Immunostaining findings of GVHD‐associated myositis were compared to those of patients with anti‐tRNA‐synthetase antibody‐associated myopathy (ASM) (n = 13) and dermatomyositis (DM) (n = 12). Results The majority of patients with GVHD‐associated myositis showed subacute or chronic progression of mild to moderate limb weakness together with elevated serum creatine kinase. These patients also exhibited mild C‐reactive protein elevation but were negative for myositis‐related autoantibodies. Programmed death‐1 (PD‐1)‐positive cells were observed in muscle interstitium adjacent to myofibers expressing human leukocyte antigen (HLA)‐DR. The interstitium was also HLA‐DR‐positive, similar to biopsy samples from ASM patients but not DM patients. The proportions of HLA‐DR‐positive muscle fibers and PD‐1‐positive interstitial cells were significantly higher in GVHD and ASM samples than DM samples. The PD‐1‐positive cells were mostly CD‐8‐positive lymphocytes. Discussion GVHD‐associated myositis is characterized by HLA‐DR‐positive myofibers and infiltration of PD‐1‐positive lymphocytes. These features distinguish GVHD‐associated myositis from DM but not from ASM.
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- 2024
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31. Comprehensive characterization of γ-aminobutyric acid (GABA) production by Levilactobacillus brevis CRL 2013: insights from physiology, genomics, and proteomics
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Pablo G. Cataldo, María Paulina Urquiza Martínez, Julio Villena, Haruki Kitazawa, Lucila Saavedra, and Elvira M. Hebert
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lactic acid bacteria ,GABA synthesis ,proteomics ,chemically defined medium ,lactobacilli ,Microbiology ,QR1-502 - Abstract
IntroductionLevilactobacillus brevis CRL 2013, a plant-derived lactic acid bacterium (LAB) with immunomodulatory properties, has emerged as an efficient producer of γ-aminobutyric acid (GABA). Notably, not all LAB possess the ability to produce GABA, highlighting the importance of specific genetic and environmental conditions for GABA synthesis. This study aimed to elucidate the intriguing GABA-producing machinery of L. brevis CRL 2013 and support its potential for safe application through comprehensive genome analysis.MethodsA comprehensive genome analysis of L. brevis CRL 2013 was performed to identify the presence of antibiotic resistance genes, virulence markers, and genes associated with the glutamate decarboxylase system, which is essential for GABA biosynthesis. Then, an optimized chemically defined culture medium (CDM) was supplemented with monosodium glutamate (MSG) and yeast extract (YE) to analyze their influence on GABA production. Proteomic and transcriptional analyses were conducted to assess changes in protein and gene expression related to GABA production.ResultsThe absence of antibiotic resistance genes and virulence markers in the genome of L. brevis CRL 2013 supports its safety for potential probiotic applications. Genes encoding the glutamate decarboxylase system, including two gad genes (gadA and gadB) and the glutamate antiporter gene (gadC), were identified. The gadB gene is located adjacent to gadC, while gadA resides separately on the chromosome. The transcriptional regulator gadR was found upstream of gadC, with transcriptional analyses demonstrating cotranscription of gadR with gadC. Although MSG supplementation alone did not activate GABA synthesis, the addition of YE significantly enhanced GABA production in the optimized CDM containing glutamate. Proteomic analysis revealed minimal differences between MSG-supplemented and non-supplemented CDM cultures, whereas YE supplementation resulted in significant proteomic changes, including upregulation of GadB. Transcriptional analysis confirmed increased expression of gadB and gadR upon YE supplementation, supporting its role in activating GABA production.ConclusionThese findings provide valuable insights into the influence of nutrient composition on GABA production. Furthermore, they unveil the potential of L. brevis CRL 2013 as a safe, nonpathogenic strain with valuable biotechnological traits which can be further leveraged for its probiotic potential in the food industry.
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- 2024
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32. Association of Fusobacterium nucleatum with specific T-cell subsets in the colorectal carcinoma microenvironment
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Borowsky, J. (Jennifer), Haruki, K. (Koichiro), Lau, M. C. (Mai Chan), Costa, A. D. (Andressa Dias), Väyrynen, J. P. (Juha P.), Ugai, T. (Tomotaka), Arima, K. (Kota), da Silva, A. (Annacarolina), Felt, K. D. (Kristen D.), Zhao, M. (Melissa), Gurjao, C. (Carino), Twombly, T. S. (Tyler S.), Fujiyoshi, K. (Kenji), Väyrynen, S. A. (Sara A.), Hamada, T. (Tsuyoshi), Mima, K. (Kosuke), Bullman, S. (Susan), Harrison, T. A. (Tabitha A.), Phipps, A. I. (Amanda I.), Peters, U. (Ulrike), Ng, K. (Kimmie), Meyerhardt, J. A. (Jeffrey A.), Song, M. (Mingyang), Giovannucci, E. L. (Edward L.), Wu, K. (Kana), Zhang, X. (Xuehong), Freeman, G. J. (Gordon J.), Huttenhower, C. (Curtis), Garrett, W. S. (Wendy S.), Chan, A. T. (Andrew T.), Leggett, B. A. (Barbara A.), Whitehall, V. L. (Vicki L. J.), Walker, N. (Neal), Brown, I. (Ian), Bettington, M. (Mark), Nishihara, R. (Reiko), Fuchs, C. S. (Charles S.), Lennerz, J. K. (Jochen K.), Giannakis, M. (Marios), Nowak, J. A. (Jonathan A.), and Ogino, S. (Shuji)
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immunology ,stomatognathic diseases ,stomatognathic system ,molecular pathological epidemiology ,microbiome ,tumor microenvironment ,colorectal neoplasms - Abstract
Purpose: While evidence indicates that Fusobacterium nucleatum (F. nucleatum) may promote colorectal carcinogenesis through its suppressive effect on T-cell–mediated antitumor immunity, the specific T-cell subsets involved remain uncertain. Experimental Design: We measured F. nucleatum DNA within tumor tissue by quantitative PCR on 933 cases (including 128 F. nucleatum–positive cases) among 4,465 incident colorectal carcinoma cases in two prospective cohorts. Multiplex immunofluorescence combined with digital image analysis and machine learning algorithms for CD3, CD4, CD8, CD45RO (PTPRC isoform), and FOXP3 measured various T-cell subsets. We leveraged data on Bifidobacterium, microsatellite instability (MSI), tumor whole-exome sequencing, and M1/M2-type tumor-associated macrophages [TAM; by CD68, CD86, IRF5, MAF, and MRC1 (CD206) multimarker assay]. Using the 4,465 cancer cases and inverse probability weighting method to control for selection bias due to tissue availability, multivariable-adjusted logistic regression analysis assessed the association between F. nucleatum and T-cell subsets. Results: The amount of F. nucleatum was inversely associated with tumor stromal CD3⁺ lymphocytes [multivariable OR, 0.47; 95% confidence interval (CI), 0.28–0.79, for F. nucleatum–high vs. -negative category; Ptrend = 0.0004] and specifically stromal CD3⁺CD4⁺CD45RO⁺ cells (corresponding multivariable OR, 0.52; 95% CI, 0.32–0.85; Ptrend = 0.003). These relationships did not substantially differ by MSI status, neoantigen load, or exome-wide tumor mutational burden. F. nucleatum was not significantly associated with tumor intraepithelial T cells or with M1 or M2 TAMs. Conclusions: The amount of tissue F. nucleatum is associated with lower density of stromal memory helper T cells. Our findings provide evidence for the interactive pathogenic roles of microbiota and specific immune cells.
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- 2021
33. Tumor long interspersed nucleotide element-1 (LINE-1) hypomethylation in relation to age of colorectal cancer diagnosis and prognosis
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Akimoto, N. (Naohiko), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Zhong, R. (Rong), Lau, M. C. (Mai Chan), Fujiyoshi, K. (Kenji), Kishikawa, J. (Junko), Haruki, K. (Koichiro), Arima, K. (Kota), Twombly, T. S. (Tyler S.), Zhang, X. (Xuehong), Giovannucci, E. L. (Edward L.), Wu, K. (Kana), Song, M. (Mingyang), Chan, A. T. (Andrew T.), Cao, Y. (Yin), Meyerhardt, J. A. (Jeffrey A.), Ng, K. (Kimmie), Giannakis, M. (Marios), Väyrynen, J. P. (Juha P.), Nowak, J. A. (Jonathan A.), Ogino, S. (Shuji), Akimoto, N. (Naohiko), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Zhong, R. (Rong), Lau, M. C. (Mai Chan), Fujiyoshi, K. (Kenji), Kishikawa, J. (Junko), Haruki, K. (Koichiro), Arima, K. (Kota), Twombly, T. S. (Tyler S.), Zhang, X. (Xuehong), Giovannucci, E. L. (Edward L.), Wu, K. (Kana), Song, M. (Mingyang), Chan, A. T. (Andrew T.), Cao, Y. (Yin), Meyerhardt, J. A. (Jeffrey A.), Ng, K. (Kimmie), Giannakis, M. (Marios), Väyrynen, J. P. (Juha P.), Nowak, J. A. (Jonathan A.), and Ogino, S. (Shuji)
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Evidence indicates the pathogenic role of epigenetic alterations in early-onset colorectal cancers diagnosed before age 50. However, features of colorectal cancers diagnosed at age 50–54 (hereafter referred to as “intermediate-onset”) remain less known. We hypothesized that tumor long interspersed nucleotide element-1 (LINE-1) hypomethylation might be increasingly more common with decreasing age of colorectal cancer diagnosis. In 1356 colorectal cancers, including 28 early-onset and 66 intermediate-onset cases, the tumor LINE-1 methylation level measured by bisulfite-PCR-pyrosequencing (scaled 0 to 100) showed a mean of 63.6 (standard deviation (SD) 10.1). The mean tumor LINE-1 methylation level decreased with decreasing age (mean 64.7 (SD 10.4) in age ≥70, 62.8 (SD 9.4) in age 55–69, 61.0 (SD 10.2) in age 50–54, and 58.9 (SD 12.0) in age <50; p < 0.0001). In linear regression analysis, the multivariable-adjusted β coefficient (95% confidence interval (CI)) (vs. age ≥70) was −1.38 (−2.47 to −0.30) for age 55–69, −2.82 (−5.29 to −0.34) for age 50–54, and −4.54 (−8.24 to −0.85) for age <50 (Ptrend = 0.0003). Multivariable-adjusted hazard ratios (95% CI) for LINE-1 methylation levels of ≤45, 45–55, and 55–65 (vs. >65) were 2.33 (1.49–3.64), 1.39 (1.05–1.85), and 1.29 (1.02–1.63), respectively (Ptrend = 0.0005). In conclusion, tumor LINE-1 hypomethylation is increasingly more common with decreasing age of colorectal cancer diagnosis, suggesting a role of global DNA hypomethylation in colorectal cancer arising in younger adults.
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- 2021
34. The prognostic role of macrophage polarization in the colorectal cancer microenvironment
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Väyrynen, J. P. (Juha P.), Haruki, K. (Koichiro), Lau, M. C. (Mai Chan), Väyrynen, S. A. (Sara A.), Zhong, R. (Rong), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Zhao, M. (Melissa), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Twombly, T. S. (Tyler S.), Kishikawa, J. (Junko), Gu, S. (Simeng), Aminmozaffari, S. (Saina), Shi, S. (Shanshan), Baba, Y. (Yoshifumi), Akimoto, N. (Naohiko), Ugai, T. (Tomotaka), Da Silva, A. (Annacarolina), Guerriero, J. L. (Jennifer L.), Song, M. (Mingyang), Wu, K. (Kana), Chan, A. T. (Andrew T.), Nishihara, R. (Reiko), Fuchs, C. S. (Charles S.), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Ogino, S. (Shuji), Nowak, J. A. (Jonathan A.), Väyrynen, J. P. (Juha P.), Haruki, K. (Koichiro), Lau, M. C. (Mai Chan), Väyrynen, S. A. (Sara A.), Zhong, R. (Rong), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Zhao, M. (Melissa), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Twombly, T. S. (Tyler S.), Kishikawa, J. (Junko), Gu, S. (Simeng), Aminmozaffari, S. (Saina), Shi, S. (Shanshan), Baba, Y. (Yoshifumi), Akimoto, N. (Naohiko), Ugai, T. (Tomotaka), Da Silva, A. (Annacarolina), Guerriero, J. L. (Jennifer L.), Song, M. (Mingyang), Wu, K. (Kana), Chan, A. T. (Andrew T.), Nishihara, R. (Reiko), Fuchs, C. S. (Charles S.), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Ogino, S. (Shuji), and Nowak, J. A. (Jonathan A.)
- Abstract
Macrophages are among the most common cells in the colorectal cancer microenvironment, but their prognostic significance is incompletely understood. Using multiplexed immunofluorescence for CD68, CD86, IRF5, MAF, MRC1 (CD206), and KRT (cytokeratins) combined with digital image analysis and machine learning, we assessed the polarization spectrum of tumor-associated macrophages in 931 colorectal carcinomas. We then applied Cox proportional hazards regression to assess prognostic survival associations of intraepithelial and stromal densities of M1-like and M2-like macrophages while controlling for potential confounders, including stage and microsatellite instability status. We found that high tumor stromal density of M2-like macrophages was associated with worse cancer-specific survival, whereas tumor stromal density of M1-like macrophages was not significantly associated with better cancer-specific survival. High M1:M2 density ratio in tumor stroma was associated with better cancer-specific survival. Overall macrophage densities in tumor intraepithelial or stromal regions were not prognostic. These findings suggested that macrophage polarization state, rather than their overall density, was associated with cancer-specific survival, with M1- and M2-like macrophage phenotypes exhibiting distinct prognostic roles. These results highlight the utility of a multimarker strategy to assess the macrophage polarization at single-cell resolution within the tumor microenvironment.
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- 2021
35. Association of PIK3CA mutation and PTEN loss with expression of CD274 (PD-L1) in colorectal carcinoma
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Ugai, T. (Tomotaka), Zhao, M. (Melissa), Shimizu, T. (Takashi), Akimoto, N. (Naohiko), Shi, S. (Shanshan), Takashima, Y. (Yasutoshi), Zhong, R. (Rong), Lau, M. C. (Mai Chan), Haruki, K. (Koichiro), Arima, K. (Kota), Fujiyoshi, K. (Kenji), Langworthy, B. (Benjamin), Masugi, Y. (Yohei), da Silva, A. (Annacarolina), Nosho, K. (Katsuhiko), Baba, Y. (Yoshifumi), Song, M. (Mingyang), Chan, A. T. (Andrew T.), Wang, M. (Molin), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Väyrynen, J. P. (Juha P.), Nowak, J. A. (Jonathan A.), Ogino, S. (Shuji), Ugai, T. (Tomotaka), Zhao, M. (Melissa), Shimizu, T. (Takashi), Akimoto, N. (Naohiko), Shi, S. (Shanshan), Takashima, Y. (Yasutoshi), Zhong, R. (Rong), Lau, M. C. (Mai Chan), Haruki, K. (Koichiro), Arima, K. (Kota), Fujiyoshi, K. (Kenji), Langworthy, B. (Benjamin), Masugi, Y. (Yohei), da Silva, A. (Annacarolina), Nosho, K. (Katsuhiko), Baba, Y. (Yoshifumi), Song, M. (Mingyang), Chan, A. T. (Andrew T.), Wang, M. (Molin), Meyerhardt, J. A. (Jeffrey A.), Giannakis, M. (Marios), Väyrynen, J. P. (Juha P.), Nowak, J. A. (Jonathan A.), and Ogino, S. (Shuji)
- Abstract
Immunotherapy targeting the CD274 (PD-L1)/PDCD1 (PD-1) immune checkpoint axis has emerged as a promising treatment strategy for various cancers. Experimental evidence suggests that phosphatidylinositol-4,5-bisphosphonate 3-kinase (PI3K) signaling may upregulate CD274 expression. Thus, we hypothesized that PIK3CA mutation, PTEN loss, or their combined status might be associated with CD274 overexpression in colorectal carcinoma. We assessed tumor CD274 and PTEN expression by immunohistochemistry and assessed PIK3CA mutation by pyrosequencing in 753 patients among 4,465 incident rectal and colon cancer cases that had occurred in two U.S.-wide prospective cohort studies. To adjust for potential confounders and selection bias due to tissue availability, inverse probability weighted multivariable ordinal logistic regression analyses used the 4,465 cases and tumoral data including microsatellite instability, CpG island methylator phenotype, KRAS and BRAF mutations. PIK3CA mutation and loss of PTEN expression were detected in 111 of 753 cases (15%) and 342 of 585 cases (58%), respectively. Tumor CD274 expression was negative in 306 (41%), low in 195 (26%), and high in 252 (33%) of 753 cases. PTEN loss was associated with CD274 overexpression [multivariable odds ratio (OR) 1.83; 95% confidence interval (CI), 1.22–2.75; P = .004]. PIK3CA mutation was statistically-insignificantly (P = .036 with the stringent alpha level of 0.005) associated with CD274 overexpression (multivariable OR, 1.54; 95% CI, 1.03–2.31). PIK3CA-mutated PTEN-lost tumors (n = 33) showed higher prevalence of CD274-positivity (82%) than PIK3CA-wild-type PTEN-lost tumors (n = 204; 70% CD274-positivity) and PTEN-expressed tumors (n = 147; 50% CD274-positivity) (P = .003). Our findings support the role of PI3K signaling in the CD274/PDCD1 pathway.
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- 2021
36. Prognostic significance of myeloid immune cells and their spatial distribution in the colorectal cancer microenvironment
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Väyrynen, J. P. (Juha P), Haruki, K. (Koichiro), Väyrynen, S. A. (Sara A), Lau, M. C. (Mai Chan), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Kishikawa, J. (Junko), Akimoto, N. (Naohiko), Zhong, R. (Rong), Shi, S. (Shanshan), Chang, T.-W. (Tzuu-Wang), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Twombly, T. S. (Tyler S), Da Silva, A. (Annacarolina), Song, M. (Mingyang), Wu, K. (Kana), Zhang, X. (Xuehong), Chan, A. T. (Andrew T), Nishihara, R. (Reiko), Fuchs, C. S. (Charles S), Meyerhardt, J. A. (Jeffrey A), Giannakis, M. (Marios), Ogino, S. (Shuji), Nowak, J. A. (Jonathan A), Väyrynen, J. P. (Juha P), Haruki, K. (Koichiro), Väyrynen, S. A. (Sara A), Lau, M. C. (Mai Chan), Costa, A. D. (Andressa Dias), Borowsky, J. (Jennifer), Zhao, M. (Melissa), Ugai, T. (Tomotaka), Kishikawa, J. (Junko), Akimoto, N. (Naohiko), Zhong, R. (Rong), Shi, S. (Shanshan), Chang, T.-W. (Tzuu-Wang), Fujiyoshi, K. (Kenji), Arima, K. (Kota), Twombly, T. S. (Tyler S), Da Silva, A. (Annacarolina), Song, M. (Mingyang), Wu, K. (Kana), Zhang, X. (Xuehong), Chan, A. T. (Andrew T), Nishihara, R. (Reiko), Fuchs, C. S. (Charles S), Meyerhardt, J. A. (Jeffrey A), Giannakis, M. (Marios), Ogino, S. (Shuji), and Nowak, J. A. (Jonathan A)
- Abstract
Background: Myeloid cells represent an abundant yet heterogeneous cell population in the colorectal cancer microenvironment, and their roles remain poorly understood. Methods: We used multiplexed immunofluorescence combined with digital image analysis to identify CD14⁺ monocytic and CD15⁺ granulocytic cells and to evaluate their maturity (HLA-DR and CD33), immunosuppressive potential (ARG1) and proximity to cytokeratin (KRT)-positive tumor cells in 913 colorectal carcinomas. Using covariate data of 4465 incident colorectal cancers in two prospective cohort studies, the inverse probability weighting method was used with multivariable-adjusted Cox proportional hazards models to assess cancer-specific mortality according to ordinal quartiles (Q1–Q4) of myeloid cell densities. Immune cell–tumor cell proximity was measured with the nearest neighbor method and the G-cross function, which determines the likelihood of any tumor cell having at least one immune cell of the specified type within a certain radius. Results: Higher intraepithelial (Ptrend=0.0002; HR for Q4 (vs Q1), 0.48, 95% CI 0.31 to 0.76) and stromal (Ptrend <0.0001; HR for Q4 (vs Q1), 0.42, 95% CI 0.29 to 0.63) densities of CD14⁺HLA-DR⁺ cells were associated with lower colorectal cancer-specific mortality while, conversely, higher intraepithelial densities of CD14⁺HLA-DR⁻ cells were associated with higher colorectal cancer-specific mortality (Ptrend=0.0003; HR for Q4 (vs Q1), 1.78, 95% CI 1.25 to 2.55). Spatial analyses indicated that CD15⁺ cells were located closer to tumor cells than CD14⁺ cells, and CD14⁺HLA-DR⁺ cells were closer to tumor than CD14⁺HLA-DR⁻ cells (p<0.0001). The G-cross proximity measurement, evaluating the difference in the likelihood of any tumor cell being colocated with at least one CD14⁺HLA-DR⁺ cell versus CD14⁺HLA-DR⁻ cell within a 20 µm radius, was associated with lower colorectal cancer-specific mortality (Ptrend <0.0001; HR for Q4 (vs Q1), 0.37, 95% CI 0.24 to 0.5
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- 2021
37. A 3-D Bank Memory System for Low-Power Neural Network Processing Achieved by Instant Context Switching and Extended Power Gating Time
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Kouhei Toyotaka, Yuto Yakubo, Kazuma Furutani, Haruki Katagiri, Masashi Fujita, Yoshinori Ando, Toru Nakura, and Shunpei Yamazaki
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Oxide semiconductor ,IGZO ,monolithic stacking ,endpoint AI ,power gating ,context switching ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Using a 3-D monolithic stacking memory technology of crystalline oxide semiconductor (OS) transistors, we fabricated a test chip having AI accelerator (ACC) memory for weight data of a neural network (NN), backup memory of flip-flops (FF), and CPU memory storing instructions and data. These memories are composed of two-layer OS transistors on Si CMOS, where memories in each layer correspond to a bank. In this structure, bank switching of the ACC memory and the FF backup memory work together, and thus inference of different NNs is switched with low latency and low power so that the power gating standby time can be extended. Consequently, a 92% reduction in power consumption is achieved in inference at a frame rate of 60 fps as compared with a chip using static random access memory (SRAM) as the ACC memory.
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- 2024
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38. Fructose-induced FGF21 secretion does not activate brown adipose tissue in Japanese young men: randomized cross-over and randomized controlled trials
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Haruki Kataoka, Shinsuke Nirengi, Yuka Matsui, and Hirokazu Taniguchi
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Brown adipose tissue ,Fibroblast growth factor 21 ,Thermogenesis ,Fructose ,Thermography ,RCT ,Physical anthropology. Somatology ,GN49-298 - Abstract
Abstract Background Human brown adipose tissue (BAT) activity is associated with lower body fatness and favorable glucose metabolism. Previous studies reported that oral fructose loading induces postprandial fibroblast growth factor 21 (FGF21) secretion. FGF21 is a known inducer of adipose tissue thermogenesis; however, the effects of diet-induced FGF21 secretion on BAT thermogenesis remain to be elucidated. Methods The effects of both single load and daily consumption of fructose on BAT activity were examined using a randomized cross-over trial and a 2-week randomized controlled trial (RCT), respectively. In the cross-over trial, 15 young men consumed a single dose of fructose solution or water and then consumed the other on a subsequent day. The RCT enrolled 22 young men, and the participants were allocated to a group that consumed fructose and a group that consumed water daily for 2 weeks. BAT activity was analyzed using thermography with cold exposure. Plasma FGF21 level was determined by enzyme-linked immunosorbent assay. Results In the cross-over single-load trial, plasma FGF21 levels were significantly increased at 2 h after oral fructose load (p < 0.01); however, there was no significant difference in BAT activity between the fructose load and drinking water. The 2-week RCT revealed that both plasma FGF21 levels and BAT activity were not significantly increased by daily fructose consumption compared to water. Correlation analyses revealed that BAT activity at the baseline and the final measurements were strongly and positively associated with the RCT (r = 0.869, p < 0.001). Changes in BAT activity were significantly and negatively correlated with changes in plasma glucose levels during the 2-week intervention (r = − 0.497, p = 0.022). Conclusions Oral fructose load induces a temporary increase in circulating FGF21 levels; however, this does not activate BAT thermogenesis in healthy young men. Further studies are needed to elucidate the effect of endogenous FGF21 on physiological function. Trial registration This study is registered with the University Hospital Medical Information Network in Japan (number 000051761, registered 1 August 2023, retrospectively registered, https://center6.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000052680 ).
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- 2024
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39. A case of condyloma acuminatum of the bladder concurrently diagnosed with urothelial carcinoma
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Ibuki Tsuru, Masaki Nakamura, Taro Izumi, Akihiro Ono, Sakiko Miura, Teppei Morikawa, Kazuyoshi Shigehara, Tadaichi Kitamura, Haruki Kume, and Yoshiyuki Shiga
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bladder ,condyloma acuminatum ,human papilloma virus ,urothelial carcinoma ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Condyloma acuminatum usually occurs in the external genitalia and rarely in the bladder mucosa. Here, we report a case of condyloma acuminatum of the bladder that was detected concurrently with urothelial carcinoma. Case presentation A 42‐year‐old man was referred to our urology department with positive urine cytology for urothelial carcinoma. Cystoscopy revealed a broad‐base nonpapillary bladder tumor. The patient underwent a transurethral resection of the bladder tumor. Pathological examination revealed urothelial carcinoma, high‐grade pT1, and concurrent resection of condyloma acuminatum. DNA was extracted from the paraffin‐embedded transurethral resection of the bladder tumor tissue specimens. HPV11 was detected in condylomas by PCR and in situ hybridization, whereas HPV was not detected in urothelial carcinomas. Conclusion We report a rare case of condyloma acuminatum of the bladder that was concurrently diagnosed with urothelial carcinoma from the same site.
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- 2024
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40. Prostate-specific antigen doubling time predicts the efficacy of site-directed therapy for oligoprogressive castration-resistant prostate cancer
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Taketo Kawai, Satoru Taguchi, Keina Nozaki, Naoki Kimura, Takahiro Oshina, Takuya Iwaki, Hotaka Matsui, Aya Niimi, Jun Kamei, Yoshiyuki Akiyama, Yuta Yamada, Yusuke Sato, Daisuke Yamada, Tomoyuki Kaneko, Subaru Sawayanagi, Hidetsugu Nakayama, Ryogo Minamimoto, Hideomi Yamashita, Hideyo Miyazaki, Tetsuya Fujimura, Tohru Nakagawa, and Haruki Kume
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Castration-resistant prostate cancer ,Oligoprogression ,Oligometastasis ,PSA doubling time ,Site-directed therapy ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background: In recent years, site-directed therapies (SDTs) targeting progressive lesions in patients with oligometastatic prostate cancer have attracted attention. However, whether they effectively treat oligoprogressive castration-resistant prostate cancer (CRPC) remains unclear. Here, we investigated the efficacy of SDT in patients with oligoprogressive CRPC and identified prognostic factors. Methods: We reviewed 59 patients with oligoprogressive CRPC who underwent SDT targeting prostate or metastatic lesions between April 2014 and March 2022. We evaluated the associations between several pretreatment clinical variables and treatment procedures and a >50% prostate-specific antigen (PSA) response, progression-free survival (PFS), and time to next treatment (TTNT). Results: A PSA response of >50% was observed in 66% of patients. The median PFS and TTNT were 8.3 months and 9.9 months, respectively. Patients with PSA doubling time ≥6 months showed a higher >50% PSA response rate (87% vs. 45%; P 50% PSA response, favorable PFS, and TTNT (P = 0.037, 0.025, and 0.017, respectively). Conclusion: PSA doubling time of ≥6 months may be a key indicator of the favorable efficacy of SDT for oligoprogressive CRPC.
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- 2023
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41. Safety and efficacy of amrubicin with primary prophylactic pegfilgrastim as second‐line chemotherapy in patients with small cell lung cancer
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Motoki Sekikawa, Haruyasu Murakami, Meiko Morita, Kosei Doshita, Keita Miura, Hiroaki Kodama, Noboru Morikawa, Yuko Iida, Nobuaki Mamesaya, Haruki Kobayashi, Ryo Ko, Kazushige Wakuda, Akira Ono, Hirotsugu Kenmotsu, Tateaki Naito, Hirofumi Chiba, and Toshiaki Takahashi
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amrubicin ,febrile neutropenia ,pegfilgrastim ,second‐line chemotherapy ,small cell lung cancer ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Amrubicin (AMR) regimens have shown efficacy as second‐line treatment in patients with small cell lung cancer (SCLC); however, adverse events such as febrile neutropenia (FN) sometimes preclude their use. Further, the safety and efficacy of AMR with primary prophylactic pegfilgrastim (P‐PEG) have not been sufficiently evaluated. In this study, we evaluated the safety and efficacy of AMR with or without P‐PEG as second‐line chemotherapy for SCLC. Methods We retrospectively reviewed patients with SCLC who received AMR as second‐line chemotherapy at Shizuoka Cancer Center, between December 2014 and November 2021. Based on presence/absence of P‐PEG in their regimen, patients (n = 60) were divided into P‐PEG (n = 21) and non‐P‐PEG groups, and their clinical outcomes were evaluated. Results Median of AMR treatment cycles was five (range: 1–39 cycles) in P‐PEG group and four (range: 1–15 cycles) in non‐P‐PEG group. The incidence of FN (4.8% vs. 30.8%; p = 0.02) and AMR dose reduction because of adverse events (4.8% vs. 25.6%; p = 0.08) were lower in the P‐PEG group than in the non‐P‐PEG group. The objective response rates were 52.4% and 30.8%, and median progression‐free and overall survival were 4.7 and 3.0 months, and 9.6 and 6.8 months, in the P‐PEG and non‐P‐PEG groups, respectively. Conclusions AMR with P‐PEG as second‐line chemotherapy for SCLC reduced the incidence of FN at a maintained AMR dose intensity and was associated with favorable tumor responses and survival outcomes. P‐PEG should be considered for patients treated with AMR for SCLC including refractory relapsed SCLC.
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- 2023
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42. Successful reconstruction of the rat ureter by a syngeneic collagen tube with a cardiomyocyte sheet
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Shutaro Yamamoto, Kenji Matsui, Yoshitaka Kinoshita, Hiroshi Sasaki, Hidekazu Sekine, Yatsumu Saito, Yasuhide Nakayama, Haruki Kume, Takahiro Kimura, Takashi Yokoo, and Eiji Kobayashi
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Biotube ,Cardiomyocyte sheets ,Regeneration ,Scaffold ,Ureter ,Tissue engineering ,Medicine (General) ,R5-920 ,Cytology ,QH573-671 - Abstract
Introduction: Ureteral injuries require surgical intervention as they lead to loss of renal function. The current reconstructive techniques for long ureteral defects are problematic. Consequently, this study aimed to reconstruct the ureter in a rat model using subcutaneously prepared autologous collagen tubes (Biotubes). Methods: The lower ureter of LEW/SsNSlc rats was ligated to dilate the ureter to make anastomosis easier, and reconstruction was performed six days later by anastomosing the dilated ureter and bladder with a Biotube that was prepared subcutaneously in syngeneic rats. Some rats underwent left nephrectomy and ureter reconstruction simultaneously as negative controls to evaluate the effects of urine flow on patency. The other rats were divided into three groups as follows: a group in which the ureter was reconstructed with the Biotube alone, a group in which cardiomyocyte sheets made from the neonatal hearts of syngeneic rats were wrapped around the Biotube, and a group in which an adipose-derived stem cell sheets made from the inguinal fat of adult syngeneic rats were wrapped. Contrast-enhanced computed tomography and pathological evaluations were performed two weeks after reconstruction. Result: In the Biotube alone group, all tubes were occluded and hydronephrosis developed, whereas the urothelium regenerated beyond the anastomosis when the left kidney was not removed, suggesting that urothelial epithelial spread occurred with urinary flow. The patency of the ureteral lumen was obtained in some rats in the cardiomyocyte sheet covered group, whereas stricture or obstruction of the reconstructed ureter was observed in all rats in the other groups. Pathological evaluation revealed a layered urothelial structure in the cardiomyocyte sheet covered group, although only a small amount of cardiomyocyte sheets remained. Conclusion: Urinary flow may support the epithelial spread of the urothelium into the reconstructed ureter. Neonatal rat cardiomyocyte sheets supported the patency of the regenerated ureter with a layered urothelium.
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- 2023
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43. Rhombohedral boron monosulfide as a metal-free photocatalyst
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Keisuke Miyazaki, Akira Yamaguchi, Haruki Kusaka, Norinobu Watanabe, Aufandra Cakra Wardhana, Satoshi Ishii, Akiyasu Yamamoto, Masashi Miyakawa, Takashi Taniguchi, Takahiro Kondo, and Masahiro Miyauchi
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Medicine ,Science - Abstract
Abstract Most of previous photocatalysts contain metal species, thus exploring a metal-free photocatalyst is still challenging. A metal-free photocatalyst has an advantage for the development of economical and non-toxic artificial photosynthesis system and/or environmental purification applications. In this study, rhombohedral boron monosulfide (r-BS) was synthesized by a high-pressure solid-state reaction, and its photocatalytic properties were investigated. r-BS absorbed visible light, and its photocurrent action spectrum also exhibited visible light responsivity. The r-BS evolved hydrogen (H2) from water under ultraviolet (UV) as well as under visible light irradiation, and its internal quantum efficiency reached 1.8% under UV light irradiation. In addition to the H2 evolution reaction, the r-BS photocatalyst drove carbon dioxide (CO2) reduction and dye oxidation reactions under UV irradiation. Although bare r-BS was not so stable under strong light irradiation in water, cocatalyst modification improved its stability. These results indicate that r-BS is a new class of non-metal photocatalyst applicable for H2 production, CO2 reduction, and environmental purification reactions.
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- 2023
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44. Identification of DNA damage response-related genes as biomarkers for castration-resistant prostate cancer
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Masashi Oshima, Ken-ichi Takayama, Yuta Yamada, Naoki Kimura, Haruki Kume, Tetsuya Fujimura, and Satoshi Inoue
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Medicine ,Science - Abstract
Abstract Although hormone therapy is effective for the treatment of prostate cancer (Pca), many patients develop a lethal type of Pca called castration-resistant prostate cancer (CRPC). Dysregulation of DNA damage response (DDR)-related genes leads to Pca progression. Here, we explored DDR-related signals upregulated in CRPC tissues. We analyzed the gene expression profiles in our RNA-sequence (RNA-seq) dataset containing benign prostate, primary Pca, and CRPC samples. We identified six DDR-related genes (Ribonuclease H2 Subunit A (RNASEH2A), replication factor C subunit 2 (RFC2), RFC4, DNA Ligase 1 (LIG1), DNA polymerase D1 (POLD1), and DNA polymerase E4 (POLE4)) that were upregulated in CRPC compared with Pca tissues. By analyzing public databases and validation studies, we focused on RFC2 as a new biomarker. Functional analysis demonstrated that silencing of RFC2 expression inhibited cell proliferation and induced the expression of DNA damage and apoptosis markers in CRPC model cells. Furthermore, immunohistochemical (IHC) analysis revealed that high expression of RFC2 protein correlated with poor prognosis in patients with Pca and increased expression in CRPC tissues compared with localized Pca. Thus, our study suggests that six DDR-related genes would be important for Pca progression. RFC2 could be a useful biomarker associated with poor outcomes of patients with Pca.
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- 2023
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45. Two cases of prostate cancer with disseminated carcinomatosis of the bone marrow treated with novel hormonal agents
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Keina Nozaki, Hisashi Matsushima, Hiyo Obikane, Ryohei Nishimoto, Ryo Tanaka, Takeru Morishige, Tomoko Masuda, and Haruki Kume
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androgen receptor‐axis targeted agents ,bone marrow involvement ,bone marrow metastasis ,new hormonal agents ,radium‐223 ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Disseminated carcinomatosis of the bone marrow in prostate cancer is rare and has a poor prognosis. Although strong evidence suggests that novel hormonal agents improve the prognosis of metastatic prostate cancer, their effectiveness in cases of disseminated carcinomatosis of the bone marrow remains unclear. Case presentation We encountered two cases of prostate cancer with disseminated carcinomatosis of the bone marrow at the time of initial diagnosis. One patient was treated with enzalutamide, abiraterone, docetaxel, cabazitaxel, denosumab, and radium‐223 and died 38 months after the initial diagnosis. The other patient was treated with apalutamide and denosumab, and had progression‐free survival for 17 months after the initial diagnosis. Conclusion These results suggest that novel hormonal agents may improve the prognosis of prostate cancer even in patients with disseminated carcinomatosis of the bone marrow.
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- 2023
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46. Asymptomatic renal granuloma diagnosed 3 years after Bacillus Calmette–Guérin intravesical injection: A case report and a literature review
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Ibuki Tsuru, Masaki Nakamura, Taro Izumi, Akihiro Ono, Yoshio Masuda, Masashi Kusakabe, Teppei Morikawa, Haruki Kume, and Yoshiyuki Shiga
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granuloma ,kidney ,nephrectomy ,renal tuberculosis ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Intravesical Bacillus Calmette–Guérin immunotherapy is an effective treatment for non‐muscle‐invasive bladder cancer, which is occasionally associated with side effects and complications. The incidence of significant renal complications after intravesical Bacillus Calmette–Guérin immunotherapy is less than 2%. We report a case of renal granuloma after intravesical Bacillus Calmette–Guérin immunotherapy for bladder cancer, which radiologically resembled a papillary renal cell carcinoma. Case presentation A 65‐year‐old man, who had a medical history of urothelial carcinoma and received intravesical Bacillus Calmette–Guérin therapy, was referred to our Urology Department with a right renal tumor. Imaging findings suggested papillary renal cell carcinoma. Robot‐assisted partial nephrectomy was performed, and the histopathological examination revealed epithelioid cell granuloma, which were considered to be Bacillus Calmette–Guérin‐related renal granuloma. Conclusion Bacillus Calmette–Guérin‐related renal granuloma mimicking papillary renal cell carcinoma have been reported. We should consider the possibility of renal granulomas when encountering image abnormalities for patients treated with intravesical Bacillus Calmette–Guérin therapy.
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- 2023
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47. Broad subcutaneous emphysema with airway obstruction during robot‐assisted partial nephrectomy: A case report and literature review
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Akihiro Ono, Masaki Nakamura, Tomoe Hayashi, Ibuki Tsuru, Taro Izumi, Masashi Kusakabe, Kazunari Nakao, Masanori Kashiwagi, Haruki Kume, and Yoshiyuki Shiga
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airway obstruction ,laparoscopic surgery ,subcutaneous emphysema ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Subcutaneous emphysema is a relatively common complication in laparoscopic surgery. However, airway obstruction secondary to subcutaneous emphysema is rare. Case presentation A 63‐year‐old woman with a 56‐mm left renal tumor underwent a robot‐assisted partial nephrectomy. The operative time was 155 min, the insufflation time was 108 min, and the estimated blood loss was 70 mL. The pneumoperitoneum pressure was maintained at 12 mmHg, except at 15 mmHg for 19 min during tumor resection. The end‐tidal CO2 was
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- 2023
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48. 8-Week Kaempferia parviflora Extract Administration Improves Submaximal Exercise Capacity in Mice by Enhancing Skeletal Muscle Antioxidant Gene Expression and Plasma Antioxidant Capacity
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Jiapeng Huang, Yishan Tong, Shuo Wang, Takashi Tagawa, Yasuhiro Seki, Sihui Ma, Ziwei Zhang, Tiehan Cao, Haruki Kobori, and Katsuhiko Suzuki
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Kaempferia parviflora ,exercise tolerance ,oxidative stress ,antioxidant ,Nrf2 ,voluntary wheel running ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Black ginger (Kaempferia parviflora) extract (KPE) is extracted from a ginger family plant grown in Thailand. The polyphenolic components have potential antioxidant effects and have been reported to enhance exercise performance. However, the impact of long-term KPE administration combined with long-term training on the endurance exercise performance of healthy individuals has not been fully studied. In this study, a healthy mouse model was used to investigate the effects of 8 weeks KPE administration and voluntary wheel running on the submaximal endurance exercise capacity and its mechanism. The results showed that 8 weeks of KPE administration significantly enhanced the submaximal endurance exercise capacity of mice and extended the daily voluntary wheel running distance. By measuring oxidative stress markers in plasma and the mRNA expression of antioxidant genes in skeletal muscle, we found that KPE significantly increased plasma antioxidant levels and activated the Nrf2 (Nuclear factor erythroid 2-related factor 2)/ARE (Antioxidant Response Element) pathway and its downstream antioxidant genes expression in skeletal muscle. These results suggest that KPE may enhance the antioxidant capacity of plasma and skeletal muscle by activating the Nrf2-ARE-centered antioxidant pathway, thereby increasing the daily running distance and improving the submaximal endurance exercise capacity of mice.
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- 2024
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49. Concise and Stereospecific Total Synthesis of Arenastatin A and Its Segment B Analogs
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Yurina Mihara, Haruki Kadoya, Soki Kakihana, and Naoyuki Kotoku
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arenastatin A ,depsipeptide ,total synthesis ,late-stage diversification ,Organic chemistry ,QD241-441 - Abstract
A novel and concise synthetic method for arenastatin A, a cytotoxic cyclic depsipeptide of marine origin, was developed in this study. The convergent assembly of the four segments, including the cross-metathesis reaction, gave a cyclization precursor, and Fmoc deprotection caused simultaneous macrocyclization. The Corey–Chaykovsky reaction using a chiral sulfur ylide afforded arenastatin A with complete stereoselectivity in the longest linear sequence of seven reaction steps from the known compound. Using this synthetic method, some analogs of segment B were prepared through a late-stage diversification strategy. The simple SN2 reaction of the thiolate toward the tosylate precursor, prepared using almost the same synthetic method as described above, provided the desired sulfide analogs.
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- 2024
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50. Interaction of Receptor-Binding Domain of the SARS-CoV-2 Omicron Variant with hACE2 and Actin
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Ai Fujimoto, Haruki Kawai, Rintaro Kawamura, and Akira Kitamura
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COVID-19 ,spike protein ,actin ,fluorescence correlation spectroscopy ,protein–protein interaction ,Cytology ,QH573-671 - Abstract
The omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was identified in 2021 as a variant with heavy amino acid mutations in the spike protein, which is targeted by most vaccines, compared to previous variants. Amino acid substitutions in the spike proteins may alter their affinity for host viral receptors and the host interactome. Here, we found that the receptor-binding domain (RBD) of the omicron variant of SARS-CoV-2 exhibited an increased affinity for human angiotensin-converting enzyme 2, a viral cell receptor, compared to the prototype RBD. Moreover, we identified β- and γ-actin as omicron-specific binding partners of RBD. Protein complex predictions revealed that many omicron-specific amino acid substitutions affected the affinity between RBD of the omicron variant and actin. Our findings indicate that proteins localized to different cellular compartments exhibit strong binding to the omicron RBD.
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- 2024
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