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  1. Article ; Online: Profile of Relugolix in the Management of Advanced Hormone-Sensitive Prostate Cancer: Design, Development, and Place in Therapy.

    Tatenuma, Tomoyuki / Miyamoto, Hiroshi

    Drug design, development and therapy

    2023  Volume 17, Page(s) 2325–2333

    Abstract: Androgen deprivation therapy, primarily via a gonadotropin-releasing hormone receptor agonist or antagonist together with or without an androgen receptor antagonist, remains the mainstay of medical treatment for advanced prostate cancer. Meanwhile, ... ...

    Abstract Androgen deprivation therapy, primarily via a gonadotropin-releasing hormone receptor agonist or antagonist together with or without an androgen receptor antagonist, remains the mainstay of medical treatment for advanced prostate cancer. Meanwhile, relugolix has been developed as the first orally active, non-peptide, selective antagonist for the gonadotropin-releasing hormone receptor. Previous randomized studies involving patients with prostate cancer have demonstrated comparable efficacy in androgen suppression between relugolix vs other gonadotropin-releasing hormone antagonists or agonists. This review summarizes available data on the design and development of relugolix and its therapeutic application, and discusses if relugolix represents a promising oral alternative to injectable androgen deprivation therapy. Based on current published evidence, further investigation is likely required to determine the actual clinical benefits of relugolix therapy against prostate cancer.
    MeSH term(s) Male ; Humans ; Prostatic Neoplasms/drug therapy ; Receptors, LHRH ; Gonadotropin-Releasing Hormone/agonists ; Androgen Antagonists/pharmacology ; Androgen Antagonists/therapeutic use ; Androgens/therapeutic use
    Chemical Substances Receptors, LHRH ; Gonadotropin-Releasing Hormone (33515-09-2) ; relugolix ; Androgen Antagonists ; Androgens
    Language English
    Publishing date 2023-08-04
    Publishing country New Zealand
    Document type Journal Article ; Review
    ZDB-ID 2451346-5
    ISSN 1177-8881 ; 1177-8881
    ISSN (online) 1177-8881
    ISSN 1177-8881
    DOI 10.2147/DDDT.S373546
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Patient-specific simulations and navigation systems for partial nephrectomy.

    Makiyama, Kazuhide / Komeya, Mitsuru / Tatenuma, Tomoyuki / Noguchi, Go / Ohtake, Shinji

    International journal of urology : official journal of the Japanese Urological Association

    2023  Volume 30, Issue 12, Page(s) 1087–1095

    Abstract: Partial nephrectomy (PN) is the standard treatment for T1 renal cell carcinoma. PN is affected more by surgical variations and requires greater surgical experience than radical nephrectomy. Patient-specific simulations and navigation systems may help to ... ...

    Abstract Partial nephrectomy (PN) is the standard treatment for T1 renal cell carcinoma. PN is affected more by surgical variations and requires greater surgical experience than radical nephrectomy. Patient-specific simulations and navigation systems may help to reduce the surgical experience required for PN. Recent advances in three-dimensional (3D) virtual reality (VR) imaging and 3D printing technology have allowed accurate patient-specific simulations and navigation systems. We reviewed previous studies about patient-specific simulations and navigation systems for PN. Recently, image reconstruction technology has developed, and commercial software that converts two-dimensional images into 3D images has become available. Many urologists are now able to view 3DVR images when preparing for PN. Surgical simulations based on 3DVR images can change surgical plans and improve surgical outcomes, and are useful during patient consultations. Patient-specific simulators that are capable of simulating surgical procedures, the gold-standard form of patient-specific simulations, have also been reported. Besides VR, 3D printing is also useful for understanding patient-specific information. Some studies have reported simulation and navigation systems for PN based on solid 3D models. Patient-specific simulations are a form of preoperative preparation, whereas patient-specific navigation is used intraoperatively. Navigation-assisted PN procedures using 3DVR images have become increasingly common, especially in robotic surgery. Some studies found that these systems produced improvements in surgical outcomes. Once its accuracy has been confirmed, it is hoped that this technology will spread further and become more generalized.
    MeSH term(s) Humans ; Kidney Neoplasms/diagnostic imaging ; Kidney Neoplasms/surgery ; Kidney Neoplasms/pathology ; Nephrectomy/methods ; Carcinoma, Renal Cell/surgery ; Carcinoma, Renal Cell/pathology ; Robotic Surgical Procedures/methods ; Surgery, Computer-Assisted/methods ; Imaging, Three-Dimensional/methods
    Language English
    Publishing date 2023-08-25
    Publishing country Australia
    Document type Journal Article ; Review
    ZDB-ID 1328401-0
    ISSN 1442-2042 ; 0919-8172
    ISSN (online) 1442-2042
    ISSN 0919-8172
    DOI 10.1111/iju.15287
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: [COMPARING LAPAROSCOPIC AND ROBOT-ASSISTED PYELOPLASTY FOR URETERO-PELVIC JUNCTION OBSTRUCTION: INITIAL EXPERIENCE FROM A SINGLE CENTER].

    Tatenuma, Tomoyuki / Ito, Hiroki / Komeya, Mitsuru / Ito, Yusuke / Muraoka, Kentaro / Hasumi, Hisashi / Hayashi, Narihiko / Makiyama, Kazuhide

    Nihon Hinyokika Gakkai zasshi. The japanese journal of urology

    2024  Volume 114, Issue 1, Page(s) 1–7

    Abstract: Objective) To compare the initial results of robot-assisted laparoscopic pyeloplasty (RALP) and laparoscopic pyeloplasty (LP) for uretero-pelvic junction obstruction (UPJO). (Methods) Between April 2008 to October 2021, we identified 104 cases of UPJO ... ...

    Abstract (Objective) To compare the initial results of robot-assisted laparoscopic pyeloplasty (RALP) and laparoscopic pyeloplasty (LP) for uretero-pelvic junction obstruction (UPJO). (Methods) Between April 2008 to October 2021, we identified 104 cases of UPJO where LP was performed and 18 cases where RALP was performed at our hospital. We retrospectively analyzed their perioperative outcomes. Furthermore, we recorded the operative times for each cases of LP and RALP. (Results) The median operative time for RALP was 141 minutes, which was significantly shorter than that for LP (204 minutes). No patient in the RALP group demonstrated any Clavien-Dindo complications (≥grade 3). During the observation period, improvement of symptoms was observed in all cases. The median suturing time in RALP was 38 minutes. Compared with the last 20 cases of LP, the time to expose the uretero-pelvic junction, the time of renal pelvis incision, and suturing time were significantly shorter in RALP. In addition, the console and suturing times were stable since the initial stage. In cases with a high grade of hydronephrosis, there was a large variation in the time to expose the uretero-pelvic junction and suture the renal pelvis and ureter in LP; however, this variation was smaller in RALP. (Conclusion) At our hospital, RALP for UPJO is considered to be a safe procedure. In the future, it is necessary to consider the long-term results and effectiveness of RALP.
    MeSH term(s) Humans ; Ureter/surgery ; Retrospective Studies ; Robotics ; Kidney Pelvis/surgery ; Laparoscopy
    Language Japanese
    Publishing date 2024-01-19
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 958552-7
    ISSN 1884-7110 ; 0021-5287 ; 0369-3988
    ISSN (online) 1884-7110
    ISSN 0021-5287 ; 0369-3988
    DOI 10.5980/jpnjurol.114.1
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  4. Article ; Online: Surgical proficiency in laparoscopic radical cystectomy with extracorporeal urinary diversion and its adequacy for the execution of robot-assisted radical cystectomy with intracorporeal urinary diversion.

    Suzuki, Atsuto / Ito, Hiroki / Uemura, Koichi / Muraoka, Kentaro / Tatenuma, Tomoyuki / Osaka, Kimito / Yokomizo, Yumiko / Hayashi, Narihiko / Hasumi, Hisashi / Makiyama, Kazuhide

    Asian journal of endoscopic surgery

    2024  Volume 17, Issue 2, Page(s) e13289

    Abstract: Introduction: The number of facilities adopting intracorporeal urinary diversion (ICUD) using robots instead of extracorporeal urinary diversion (ECUD) is increasing. However, guidance on how to introduce robot-assisted radical cystectomy (RARC) + ICUD ... ...

    Abstract Introduction: The number of facilities adopting intracorporeal urinary diversion (ICUD) using robots instead of extracorporeal urinary diversion (ECUD) is increasing. However, guidance on how to introduce robot-assisted radical cystectomy (RARC) + ICUD in each urological institute remains unclear. This study aimed to verify the feasibility of the transition from laparoscopic radical cystectomy (LRC) + ECUD to RARC + ICUD.
    Methods: We retrospectively analyzed 26 consecutive patients who underwent ICUD with an ileal conduit after RARC between 2018 and 2020 (RARC + ICUD early group). We then compared these patients with 26 consecutive patients who underwent ECUD with an ileal conduit after LRC between 2012 and 2019 (LRC + ECUD late group) at Yokohama City University Hospital.
    Results: In the RARC + ICUD early group compared with the LRC + ECUD late group, the median total operation time was 516 versus 532.5 min (P = .217); time to cystectomy, 191 versus 206.5 min (P = .234); time of urinary diversion with an ileal conduit, 198 versus 220 min (P = .016); postoperative maximum C-reactive protein levels, 6.98 versus 12.46 mg/L (P = .001); number of days to oral intake, 3 versus 5 days (P = .003); length of hospital stay, 17 versus 32 days (P < .001). The postoperative complication rates (within 90 days) were 23.1% and 42.3% in the RARC + ICUD early and LRC + ECUD late groups, respectively (P = .237). Clavien-Dindo classification ≥3 was noted in 1 and 4 patients in the RARC + ICUD early and LRC + ECUD late groups, respectively (P = .350).
    Conclusion: Regarding perioperative outcomes, the RARC + ICUD early group was not inferior to the LRC + ECUD late group. This study suggests the feasibility of a transition from LRC + ECUD to RARC + ICUD.
    MeSH term(s) Humans ; Cystectomy/adverse effects ; Robotics ; Retrospective Studies ; Urinary Bladder Neoplasms/surgery ; Robotic Surgical Procedures/adverse effects ; Urinary Diversion/adverse effects ; Postoperative Complications/etiology ; Laparoscopy/adverse effects ; Treatment Outcome
    Language English
    Publishing date 2024-02-14
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2503256-2
    ISSN 1758-5910 ; 1758-5902
    ISSN (online) 1758-5910
    ISSN 1758-5902
    DOI 10.1111/ases.13289
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  5. Article ; Online: Objective assessment of laparoscopic targeting skills using a Short-Time Power of Difference (STPOD) method.

    Ohtake, Shinji / Makiyama, Kazuhide / Yamashita, Daisuke / Tatenuma, Tomoyuki / Yao, Masahiro

    International journal of computer assisted radiology and surgery

    2022  Volume 17, Issue 6, Page(s) 1029–1037

    Abstract: Purpose: To ensure that the use of surgical training tools results in improvement of surgical skills, it is necessary to be able to measure and assess surgeons' skills. We established the Short-Time Power of Difference (STPOD) method as an evaluation ... ...

    Abstract Purpose: To ensure that the use of surgical training tools results in improvement of surgical skills, it is necessary to be able to measure and assess surgeons' skills. We established the Short-Time Power of Difference (STPOD) method as an evaluation tool for evaluating targeting technique. The STPOD method evaluates the distance from the actual movement of the forceps to the shortest linear path between two points in a short time period. We examined the effectiveness of the STPOD method as a new forceps kinematic analysis.
    Methods: Six residents were categorized as novices and six urologists as experts. All participants performed box trainer training and LapPASS
    Results: STPOD (Stop) on the right side of the experts was significantly lower than that of the novices in the box trainer. Furthermore, there were significant differences in the distances of left side and STPOD (Power) between the experts and the novices in the simulator. In the correlation of parameters between the box trainer and the simulator, time showed the strongest correlation, STPOD (Power) and distance showed a mild correlation.
    Conclusion: We showed the construct validity of STPOD (Power) and STPOD (Stop) using both the box trainer and the simulator. This method is a good evaluation tool for assessing a physician's skill; however, there are much more complex motions that are performed in actual surgery. Future studies are needed to focus on evaluation in an environment closer to actual surgery and comparing with other existing methods.
    MeSH term(s) Clinical Competence ; Humans ; Laparoscopy/education ; Surgeons
    Language English
    Publishing date 2022-04-15
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2365628-1
    ISSN 1861-6429 ; 1861-6410
    ISSN (online) 1861-6429
    ISSN 1861-6410
    DOI 10.1007/s11548-022-02622-2
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  6. Article ; Online: GABBR2 as a Downstream Effector of the Androgen Receptor Induces Cisplatin Resistance in Bladder Cancer.

    Elahi Najafi, Mohammad Amin / Yasui, Masato / Teramoto, Yuki / Tatenuma, Tomoyuki / Jiang, Guiyang / Miyamoto, Hiroshi

    International journal of molecular sciences

    2023  Volume 24, Issue 18

    Abstract: The precise molecular mechanisms responsible for resistance to cisplatin-based chemotherapy in patients with bladder cancer remain elusive, while we have indicated that androgen receptor (AR) activity in urothelial cancer is associated with its ... ...

    Abstract The precise molecular mechanisms responsible for resistance to cisplatin-based chemotherapy in patients with bladder cancer remain elusive, while we have indicated that androgen receptor (AR) activity in urothelial cancer is associated with its sensitivity. Our DNA microarray analysis in control vs. AR-knockdown bladder cancer sublines suggested that the expression of a GABA B receptor GABBR2 and AR was correlated. The present study aimed to determine the functional role of GABBR2 in modulating cisplatin sensitivity in bladder cancer. AR knockdown and dihydrotestosterone treatment considerably reduced and induced, respectively, GABBR2 expression, and the effect of dihydrotestosterone was at least partially restored by an antiandrogen hydroxyflutamide. A chromatin immunoprecipitation assay further revealed the binding of AR to the promoter region of
    MeSH term(s) Humans ; Cisplatin/pharmacology ; Cisplatin/therapeutic use ; Receptors, Androgen/genetics ; Receptors, Androgen/metabolism ; Dihydrotestosterone/pharmacology ; Urinary Bladder Neoplasms/drug therapy ; Urinary Bladder Neoplasms/genetics ; Urinary Bladder Neoplasms/metabolism ; Cell Proliferation ; Cell Line, Tumor
    Chemical Substances Cisplatin (Q20Q21Q62J) ; GABBR2 protein, human ; Receptors, Androgen ; Dihydrotestosterone (08J2K08A3Y)
    Language English
    Publishing date 2023-09-06
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms241813733
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  7. Article ; Online: Training on a virtual reality laparoscopic simulator improves performance of live laparoscopic surgery.

    Ohtake, Shinji / Makiyama, Kazuhide / Yamashita, Daisuke / Tatenuma, Tomoyuki / Yao, Masahiro

    Asian journal of endoscopic surgery

    2021  Volume 15, Issue 2, Page(s) 313–319

    Abstract: Introduction: To determine whether training laparoscopic nephrectomy (LN) with a virtual reality (VR) simulator improves the performance of porcine LN.: Methods: Twelve urological residents were assigned to two groups: a training and a non-training ... ...

    Abstract Introduction: To determine whether training laparoscopic nephrectomy (LN) with a virtual reality (VR) simulator improves the performance of porcine LN.
    Methods: Twelve urological residents were assigned to two groups: a training and a non-training group. All participants performed baseline assessments of LN skills and time on the LapPASS® simulator. The training group received preoperative LapPASS® training. Both groups then performed LN using a porcine model. The operations were videotaped and evaluated using the Global Operative Assessment of Laparoscopic Skills (GOALS) system. After porcine LN, the training group performed a final LN with the LapPASS® simulator.
    Results: There was no significant difference in the operation time required for porcine LN. There were no significant differences in the total A (autonomy), B (bimanual dexterity), D (depth perception), or T (tissue handling) GOALS scores. However, the total E (efficiency) score in the training group was higher than that in the non-training group (P = .030). The final LN score with LapPASS® was significantly higher than the baseline (P = .004).
    Conclusions: The results of this study demonstrated that VR LN training improved performance in an actual operation. VR-based procedural simulation could become a vital part of the laparoscopic training program for residents.
    MeSH term(s) Animals ; Clinical Competence ; Computer Simulation ; Humans ; Internship and Residency ; Laparoscopy/education ; Swine ; User-Computer Interface ; Virtual Reality
    Language English
    Publishing date 2021-10-26
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2503256-2
    ISSN 1758-5910 ; 1758-5902
    ISSN (online) 1758-5910
    ISSN 1758-5902
    DOI 10.1111/ases.13005
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  8. Article ; Online: Real-World Data on the Effectiveness of Microporous Polysaccharide Hemospheres for Allowing Even Novice Surgeons to Perform Robot-Assisted Radical Prostatectomy Safely.

    Nirei, Takuma / Tatenuma, Tomoyuki / Muraoka, Kentaro / Aomori, Kota / Ito, Yusuke / Hasumi, Hisashi / Hayashi, Narihiko / Nakaigawa, Noboru / Makiyama, Kazuhide

    Urology research & practice

    2023  Volume 49, Issue 4, Page(s) 241–245

    Abstract: Objective: Radical prostatectomy can be performed more safely and with fewer com- plications since the advent of robot-assisted surgery. However, increased bleeding is a concern when robot-assisted radical prostatectomy includes lymph node dissection ... ...

    Abstract Objective: Radical prostatectomy can be performed more safely and with fewer com- plications since the advent of robot-assisted surgery. However, increased bleeding is a concern when robot-assisted radical prostatectomy includes lymph node dissection and nerve sparing. In real-world clinical practice, inexperienced surgeons sometimes perform robot-assisted radical prostatectomy. In this study, we investigated the effec- tiveness of microporous polysaccharide hemospheres as a local hemostatic agent in robot-assisted radical prostatectomy.
    Methods: We retrospectively evaluated 301 patients who underwent robot-assisted radical prostatectomy at our institution between December 2017 and November 2020. The patients were divided into 2 groups according to whether their surgery was per- formed after the introduction of microporous polysaccharide hemospheres as a local hemostatic agent (group A, n = 140) or before it (group B, n = 161: historical control).
    Results: Preoperative androgen deprivation therapy was significantly more common in group A than in group B (23 vs. 11, P = .009). Furthermore, surgeons were significantly less experienced (P < .001) and the operation time was significantly longer (260 min- utes vs. 229 minutes; P < .001) in group A than in group B. There was no significant difference in any other patient background characteristics or in the surgical outcomes between the groups.
    Conclusion: The use of microporous polysaccharide hemospheres allowed even inex- perienced surgeons to perform robot-assisted radical prostatectomy without compro- mising surgical outcomes.
    Language English
    Publishing date 2023-10-25
    Publishing country Turkey
    Document type Journal Article
    ISSN 2980-1478
    ISSN (online) 2980-1478
    DOI 10.5152/tud.2023.22242
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  9. Article ; Online: Predictive factors for pentafecta achievement in robot-assisted partial nephrectomy for intermediate highly complex RENAL tumors (RENAL score ≥ 7).

    Uemura, Koichi / Ito, Hiroki / Ikeda, Maiko / Uehara, Koichiro / Tatenuma, Tomoyuki / Komeya, Mitsuru / Ito, Yusuke / Muraoka, Kentaro / Hasumi, Hisashi / Makiyama, Kazuhide

    International journal of urology : official journal of the Japanese Urological Association

    2023  Volume 30, Issue 12, Page(s) 1096–1102

    Abstract: Objectives: To investigate the predictive factors for pentafecta achievement of robot-assisted partial nephrectomy (RAPN) for intermediate highly complex renal tumors (RENAL score ≥ 7).: Methods: We retrospectively analyzed the data of 247 patients ... ...

    Abstract Objectives: To investigate the predictive factors for pentafecta achievement of robot-assisted partial nephrectomy (RAPN) for intermediate highly complex renal tumors (RENAL score ≥ 7).
    Methods: We retrospectively analyzed the data of 247 patients with renal tumors with a RENAL score ≥ 7 who underwent RAPN. Baseline characteristics and perioperative outcomes were compared between the pentafecta achieved group and the unachieved group. A multivariable logistic regression model was used to identify the predictive factors for pentafecta achievement for cT1 renal tumors with a RENAL score ≥ 7.
    Results: Of the 247 patients, 75 (30.3%) patients were in the achieved group and 172 (69.7%) patients were in the unachieved group. The median warm ischemia time and total operation time were 18 min versus 23 min (p < 0.001) and 179 min versus 201 min (p < 0.001) in the achieved and unachieved groups, respectively. In the unachieved group, six patients (3.4%) had major perioperative complications (Clavien-Dindo classification system ≥3). The median preservation rates of estimated GFR at the 1-year postoperative period were 96.5% versus 83.0% (p < 0.001) in the achieved and unachieved groups. Multivariable logistic regression models revealed that age and tumor size were independent predictive factors for pentafecta achievement for cT1 renal tumors with a RENAL score ≥ 7. There were no significant differences in cancer-free survival between the two groups (p = 0.456).
    Conclusion: Age and tumor size were independent predictive factors for pentafecta achievement, although there was no difference in oncological outcomes between the pentafecta achieved group and the unachieved group in RAPN for cT1 renal tumors with a RENAL score ≥ 7.
    MeSH term(s) Humans ; Retrospective Studies ; Robotics ; Treatment Outcome ; Kidney Neoplasms/surgery ; Kidney Neoplasms/pathology ; Nephrectomy/adverse effects ; Robotic Surgical Procedures/adverse effects
    Language English
    Publishing date 2023-08-17
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 1328401-0
    ISSN 1442-2042 ; 0919-8172
    ISSN (online) 1442-2042
    ISSN 0919-8172
    DOI 10.1111/iju.15274
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  10. Article ; Online: Impacts of Complete Endophytic Renal Tumors on Surgical, Functional, and Oncological Outcomes of Robot-Assisted Partial Nephrectomy.

    Ito, Hiroki / Uemura, Koichi / Ikeda, Maiko / Jikuya, Ryosuke / Kondo, Takuya / Tatenuma, Tomoyuki / Kawahara, Takashi / Komeya, Mitsuru / Ito, Yusuke / Muraoka, Kentaro / Hasumi, Hisashi / Makiyama, Kazuhide

    Journal of endourology

    2024  Volume 38, Issue 4, Page(s) 347–352

    Abstract: Objective: ...

    Abstract Objective:
    MeSH term(s) Humans ; Robotics ; Treatment Outcome ; Retrospective Studies ; Kidney Neoplasms/surgery ; Kidney Neoplasms/pathology ; Robotic Surgical Procedures ; Nephrectomy ; Margins of Excision
    Language English
    Publishing date 2024-02-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 356931-7
    ISSN 1557-900X ; 0892-7790
    ISSN (online) 1557-900X
    ISSN 0892-7790
    DOI 10.1089/end.2023.0608
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