IWAHATA TOSHIYUKI

International Center for Reproductive Medicine

Chromosomal abnormalities in 1354 Japanese patients with azoospermia due to spermatogenic dysfunction., Shin Takeshi;Iwahata Toshiyuki;Kobori Yoshitomo;Kido Yasuhiro;Soh Shigehiro;Okada Hiroshi, International journal of urology : official journal of the Japanese Urological Association, 23(2), 188-189, 30 Nov. 2015

Comparison between semen parameters in specimens collected early in the morning and in the evening., Shimomura Yukihito;Shin Takeshi;Osaka Akiyoshi;Inoue Yasuyuki;Iwahata Toshiyuki;Kobori Yoshitomo;Ide Hisamitsu;Soh Shigehiro;Okada Hiroshi, Systems biology in reproductive medicine, 66(2), 147-150, 20 Mar. 2020

Comparison between semen parameters in specimens collected early in the morning and in the evening., Shimomura Yukihito;Shin Takeshi;Osaka Akiyoshi;Inoue Yasuyuki;Iwahata Toshiyuki;Kobori Yoshitomo;Ide Hisamitsu;Soh Shigehiro;Okada Hiroshi, Systems biology in reproductive medicine, 66(2), 147-150, 20 Mar. 2020

The Diagnostic Accuracy of Testicular Torsion by Doctors on Duty Using Sonographic Evaluation with Color Doppler., Nakayama Akinori;Ide Hisamitsu;Osaka Akiyoshi;Inoue Yasuyuki;Shimomura Yukihito;Iwahata Toshiyuki;Kobori Yoshitomo;Saito Kazutaka;Soh Shigehiro;Okada Hiroshi, American journal of men's health, 14(5), 1557988320953003, 2020

The Diagnostic Accuracy of Testicular Torsion by Doctors on Duty Using Sonographic Evaluation with Color Doppler., Nakayama Akinori;Ide Hisamitsu;Osaka Akiyoshi;Inoue Yasuyuki;Shimomura Yukihito;Iwahata Toshiyuki;Kobori Yoshitomo;Saito Kazutaka;Soh Shigehiro;Okada Hiroshi, American journal of men's health, 14(5), 1557988320953003, 2020

Testicular volume in non-obstructive azoospermia with a history of bilateral cryptorchidism may predict successful sperm retrieval by testicular sperm extraction., Osaka Akiyoshi;Iwahata Toshiyuki;Kobori Yoshitomo;Shimomura Yukihito;Yoshikawa Naoki;Onota Shin;Yamamoto Atsushi;Ide Hisamitsu;Sugimoto Kouhei;Okada Hiroshi, Reproductive medicine and biology, 19(4), 372-377, 12 Jul. 2020

Testicular volume in non-obstructive azoospermia with a history of bilateral cryptorchidism may predict successful sperm retrieval by testicular sperm extraction., Osaka Akiyoshi;Iwahata Toshiyuki;Kobori Yoshitomo;Shimomura Yukihito;Yoshikawa Naoki;Onota Shin;Yamamoto Atsushi;Ide Hisamitsu;Sugimoto Kouhei;Okada Hiroshi, Reproductive medicine and biology, 19(4), 372-377, 12 Jul. 2020

SRY-Positive 46, XX Testicular Disorder of Sexual Development With Leydig Cell Tumor., Osaka Akiyoshi;Ide Hisamitsu;Matsuoka Kentaro;Iwahata Toshiyuki;Kobori Yoshitomo;Ban Shinichi;Okada Hiroshi;Saito Kazutaka, American journal of men's health, 14(5), 1557988320970071, 2020

SRY-Positive 46, XX Testicular Disorder of Sexual Development With Leydig Cell Tumor., Osaka Akiyoshi;Ide Hisamitsu;Matsuoka Kentaro;Iwahata Toshiyuki;Kobori Yoshitomo;Ban Shinichi;Okada Hiroshi;Saito Kazutaka, American journal of men's health, 14(5), 1557988320970071, 2020

Role of male pelvic floor muscles and anterior fibromuscular stroma in males on α(1)-blocker treatment: a magnetic resonance imaging study., Nishio Kojiro;Soh Shigehiro;Syukuya Toshio;Sato Ryo;Sadaoka Yuko;Iwahata Toshiyuki;Suzuki Keisuke;Ashizawa Yoshio;Kobori Yoshitomo;Okada Hiroshi, International journal of urology : official journal of the Japanese Urological Association, 21(7), 724-727, 24 Mar. 2014

Inflammatory bowel disease in subfertile men and the effect of mesalazine on fertility., Shin Takeshi;Kobori Yoshitomo;Suzuki Keisuke;Iwahata Toshiyuki;Yagi Hiroshi;Soh Shigehiro;Arai Gaku;Okada Hiroshi, Systems biology in reproductive medicine, 60(6), 373-376, 21 Aug. 2014

Hormonal therapy (hCG and rhFSH) for infertile men with adult-onset idiopathic hypogonadotropic hypogonadism., Kobori Yoshitomo;Suzuki Keisuke;Iwahata Toshiyuki;Shin Takeshi;Sato Ryo;Nishio Kojiro;Yagi Hiroshi;Arai Gaku;Soh Shigehiro;Okada Hiroshi, Systems biology in reproductive medicine, 61(2), 110-112, 18 Dec. 2014

Transvesicoscopic ureteral reimplantation: Politano-Leadbetter versus Cohen technique., Soh Shigehiro;Kobori Yoshitomo;Shin Takeshi;Suzuki Keisuke;Iwahata Toshiyuki;Sadaoka Yuko;Sato Ryo;Nishi Morihiro;Iwamura Masatsugu;Okada Hiroshi, International journal of urology : official journal of the Japanese Urological Association, 22(4), 394-399, 09 Mar. 2015

Induction of spermatogenesis by rhFSH for azoospermia due to spermatogenic dysfunction with maturation arrest: five case series., Kobori Yoshitomo;Suzuki Keisuke;Iwahata Toshiyuki;Shin Takeshi;Sato Ryo;Nishio Kojiro;Yagi Hiroshi;Arai Gaku;Soh Shigehiro;Okada Hiroshi, Systems biology in reproductive medicine, 61(3), 168-170, 25 Mar. 2015

[SUCCESSFUL INGUINAL ORCHIECTOMY IN A PATIENT WITH A PAINFUL METASTATIC SPERMATIC CORD TUMOR: A CASE REPORT]., Shin Takeshi;Arai Gaku;Iwahata Toshiyuki;Suzuki Keisuke;Sadaoka Yuko;Ota Shigeyuki;Nishio Koujirou;Sato Ryo;Kawaguchi Makoto;Kobori Yoshitomo;Ashizawa Yoshio;Yagi Hiroshi;Yamagishi Shuji;Soh Shigehiro;Okada Hiroshi, Nihon Hinyokika Gakkai zasshi. The japanese journal of urology, 106(2), 132-136, Apr. 2015

Improvement of seminal quality and sexual function of men with oligoasthenoteratozoospermia syndrome following supplementation with L-arginine and Pycnogenol®., Kobori Yoshitomo;Suzuki Keisuke;Iwahata Toshiyuki;Shin Takeshi;Sadaoka Yuko;Sato Ryo;Nishio Kojiro;Yagi Hiroshi;Arai Gaku;Soh Shigehiro;Okada Hiroshi;Strong Jeffry Michael;Rohdewald Peter, Archivio italiano di urologia, andrologia : organo ufficiale [di] Societa italiana di ecografia urologica e nefrologica, 87(3), 190-193, 30 Sep. 2015

Mature Testicular Teratoma with Positive Estrogen Receptor Beta Expression in a Transgendered Individual on Cross-Sex Hormonal Therapy: A Case Report., Kobori Yoshitomo;Suzuki Keisuke;Iwahata Toshiyuki;Shin Takeshi;Sato Ryo;Nishio Kojiro;Yagi Hiroshi;Arai Gaku;Soh Shigehiro;Okada Hiroshi, LGBT health, 2(1), 81-83, 23 Jan. 2015

Microdissection testicular sperm extraction in Japanese patients with persistent azoospermia after chemotherapy., Shin Takeshi;Kobayashi Tomohiro;Shimomura Yukihito;Iwahata Toshiyuki;Suzuki Keisuke;Tanaka Takashi;Fukushima Mai;Kurihara Megumi;Miyata Akane;Kobori Yoshitomo;Okada Hiroshi, International journal of clinical oncology, 21(6), 1167-1171, 15 Jun. 2016

Testicular sperm extraction for patients with spinal cord injury-related anejaculation: A single-center experience., Iwahata Toshiyuki;Shin Takeshi;Shimomura Yukihito;Suzuki Keisuke;Kobayashi Tomohiro;Miyata Akane;Kobori Yoshitomo;Soh Shigehiro;Okada Hiroshi, International journal of urology : official journal of the Japanese Urological Association, 23(12), 1024-1027, 21 Oct. 2016

A questionnaire survey on attitude toward sperm cryopreservation among hematologists in Japan., Kobayashi Tomohiro;Shin Takeshi;Nishio Kojiro;Shimomura Yukihito;Iwahata Toshiyuki;Suzuki Keisuke;Miyata Akane;Kobori Yoshitomo;Arai Gaku;Okada Hiroshi, International journal of hematology, 105(3), 349-352, 14 Nov. 2016

Seminal oxidation-reduction potential and sperm DNA fragmentation index increase among infertile men with varicocele., Tanaka Takashi;Kobori Yoshitomo;Terai Kazutaka;Inoue Yasuyuki;Osaka Akiyoshi;Yoshikawa Naoki;Shimomura Yukihito;Suzuki Keisuke;Minami Tetsuji;Iwahata Toshiyuki;Onota Shin;Yamamoto Atsushi;Sugimoto Kouhei;Okada Hiroshi, Human fertility (Cambridge, England), 25(1), 142-146, 20 Jan. 2020

Does mirabegron deteriorate spermatogenesis? A lesson from spinal cord injury cases., Okada Hiroshi;Tokumoto Tadahiko;Osaka Akiyoshi;Tanaka Takashi;Iwahata Toshiyuki;Kobori Yoshitomo;Saito Kazutaka;Sato Yoko;Ban Shinichi;Sugimoto Kouhei, Lower urinary tract symptoms, 13(4), 435-439, 30 Apr. 2021

Evaluation of the sperm DNA fragmentation index in infertile Japanese men by in-house flow cytometric analysis., Osaka Akiyoshi;Okada Hiroshi;Onozuka Sae;Tanaka Takashi;Iwahata Toshiyuki;Shimomura Yukihito;Kobori Yoshitomo;Saito Kazutaka;Sugimoto Kouhei, Asian journal of andrology, 24(1), 40-44, 2022

Status of online sperm donation and sperm bank in Japan., Nakata Kumiko;Okada Hiroshi;Iwahata Toshiyuki, Reproductive medicine and biology, 20(4), 554-556, 14 Jun. 2021

Preoperative testosterone and follicle stimulating hormone levels are important predictors for sperm retrieval by microdissection testicular sperm extraction in non-mosaic Klinefelter syndrome., Uemura Kei-Ichiro;Iwahata Toshiyuki;Ide Hisamitsu;Osaka Akiyoshi;Hiramatsu Ippei;Sugimoto Kouhei;Okada Hiroshi;Saito Kazutaka, Andrologia, 54(11), e14588, 13 Sep. 2022

A regressed germ cell tumor discovered secondary to azoospermia., Tsujioka Hiroki;Uemura Keiichiro;Iwahata Toshiyuki;Inoue Yasuyuki;Inoue Minoru;Osaka Akiyoshi;Nakayama Akinori;Okada Hiroshi;Saito Kazutaka, IJU case reports, 6(2), 97-100, 08 Nov. 2022

A Case Report of Successful Kidney Transplantation in a Patient With Chronic Myelogenous Leukemia (CML) Who Has Been in Remission for 15 Years on Imatinib., Tokumoto Tadahiko;Setoguchi Kiyoshi;Osaka Akiyoshi;Ikezoe Erika;Tsujioka Hiroki;Hasegawa Kintaro;Inoue Minoru;Nirazuka Asumi;Iwahata Toshiyuki;Inoue Yasuyuki;Saito Kazutaka, Transplantation proceedings, 55(4), 1074-1077, 03 May 2023

Testicular sperm retrieval in hemodialysis patients with anejaculation., Osaka Akiyoshi;Iwahata Toshiyuki;Hiramatsu Ippei;Okada Hiroshi;Sugimoto Kouhei;Saito Kazutaka, International journal of urology : official journal of the Japanese Urological Association, 31(2), 182-184, 02 Oct. 2023

Two tumor types in a unilateral testis in a patient with severe oligozoospermia and a history of cryptorchidism surgery: A case report., Tsujioka Hiroki;Uemura Kei-Ichiro;Osaka Akiyoshi;Iwahata Toshiyuki;Fujii Akiko;Ban Shinichi;Okada Hiroshi;Saito Kazutaka, Oncology letters, 27(3), 130, 30 Jan. 2024

Robot-assisted radical prostatectomy using the novel hinotoriTM surgical robot system: initial experience and operation learning curve at a single institution., Nakayama Akinori;Izumi Keita;Ikezoe Erika;Inoue Minoru;Tsujioka Hiroki;Nirazuka Asumi;Hasegawa Kintaro;Osaka Akiyoshi;Yasuda Yuka;Fukuda Yuichi;Inoue Yasuyuki;Iwahata Toshiyuki;Setoguchi Kiyoshi;Saito Kazutaka, Translational cancer research, 13(1), 57-64, 29 Jan. 2024

Systematic molecular analyses for 115 karyotypically normal men with isolated non-obstructive azoospermia., Muranishi Yuki;Kobori Yoshitomo;Katoh-Fukui Yuko;Tamaoka Satoshi;Hattori Atsushi;Osaka Akiyoshi;Okada Hiroshi;Nakabayashi Kazuhiko;Hata Kenichiro;Kawai Tomoko;Ogata-Kawata Hiroko;Iwahata Toshiyuki;Saito Kazuki;Kon Masafumi;Shinohara Nobuo;Fukami Maki, Human reproduction (Oxford, England), 39(5), 1131-1140, 02 May 2024

Isodicentric Y Chromosome with Multiple Breakpoints in the Pseudoautosomal Region 1., Ogiwara Yasuko;Kobori Yoshitomo;Suzuki Erina;Hattori Atsushi;Tanase-Nakao Kanako;Osaka Akiyoshi;Iwahata Toshiyuki;Okada Hiroshi;Kuroki Yoko;Fukami Maki, Cytogenetic and genome research, 164(3-4), 133-138, 29 Jul. 2024

Testicular seminoma in transverse testicular ectopia., Inoue Minoru;Osaka Akiyoshi;Ikezoe Erika;Tsujioka Hiroki;Nirazuka Asumi;Hasegawa Kintaro;Iwahata Toshiyuki;Nakayama Akinori;Setoguchi Kiyoshi;Saito Kazutaka, IJU case reports, 7(5), 364-367, 31 Jul. 2024

Compound heterozygous KCTD19 variants in a man with isolated nonobstructive azoospermia., Muranishi Yuki;Katoh-Fukui Yuko;Hattori Atsushi;Kobori Yoshitomo;Osaka Akiyoshi;Okada Hiroshi;Iwahata Toshiyuki;Kon Masafumi;Shinohara Nobuo;Fukami Maki, Reproductive medicine and biology, 23(1), e12608, 24 Sep. 2024

Prognostic factors for high sperm DNA fragmentation in infertile Japanese men., Osaka Akiyoshi;Iwahata Toshiyuki;Nakayama Akinori;Okada Hiroshi;Saito Kazutaka;Sugimoto Kouhei, International journal of urology : official journal of the Japanese Urological Association, 32(1), 111-113, 16 Oct. 2024

Serum FSH levels can predict sperm identification in semen once diagnosed azoospermia., Uemura Kei-Ichiro;Iwahata Toshiyuki;Osaka Akiyoshi;Hiramatsu Ippei;Sugimoto Kouhei;Okada Hiroshi;Saito Kazutaka, Reproduction & fertility, 6(1), 03 Mar. 2025

Is the sperm DNA fragmentation index a good indicator for treatment selection in the era of modern assisted reproductive technology?, Hiroshi Okada, Toshiuki Iwahata, Takashi Tanaka, Hiroki Tsujioka, Kintaro Hasegawa, Miho Sugie, Akiyoshi Oosaka, Kazutaka Saito, Kouhei Sugimoto, The 112th Annual Meeting of the Japanese Urological Associarion, 17 Apr. 2025, 17 Apr. 2025, 19 Apr. 2025, Japan, False

Clinical Significance of Peritoneal Closure in Transperitoneal Robotic-Assisted Radical Prostatectomy, Keita Izumi, Yusuke Hara, Erika Ikezoe, Hiroki Tsujioka, Kintaro Hasegawa, Asumi Nirazuka, Akiyoshi Oosaka, Toshiyuki Iwahata, Akinori Nakayama, Kiyoshi Setoguchi, Kazutaka Saito, The 112th Annual Meeting of the Japanese Urological Associarion, 19 Apr. 2025, 17 Apr. 2025, 19 Apr. 2025, Japan, False

Evaluation of prognostic Factor for sperm DNA fragmentation, Akiyoshi Oosaka, Toshiyuki Iwahata,Yusuke Hara, Erika Ikezoe, Hiroki Tsujioka, Asumi Nirazuka, Kintaro Hasegawa, Miho Sugie, Keita Izumi, Akinori Nakayama, Kiyoshi Setoguchi, Hiroshi Okada, Kazutaka Saito, The 112th Annual Meeting of the Japanese Urological Associarion, 18 Apr. 2025, 17 Apr. 2025, 19 Apr. 2025, Japan, False

Impact of C-reactive protein kinetics on the prognosis of the patient with metastatic urotherial carcinoma treated with enfortumab vedotin, Hiroki Tsujioka, Keita Izumi, Yusuke Hara, Erika Ikezoe, Kintaro Hasegawa, Asumi Nirazuka, Akiyoshi Oosaka, Toshiuki Iwahata, Akinori Nakayama, Kiyoshi Setoguchi, Kazutaka Saito, The 112th Annual Meeting of the Japanese Urological Associarion, 18 Apr. 2025, 17 Apr. 2025, 19 Apr. 2025, Poster presentation, Japan

Initial Experience with triplent therapy for metastatic castration senstive prostate cancer, Yusuke Hata, Akiyoshi Nakayama, Erika Ikezoe, Minoru inoue, Hiroki Tsujioka, Asumi Nirazuka, Kintaro Hasehgawa, Akiyoshi Oosaka, Keita Izumi, Toshiuki Iwahata, Kiyoshi Setoguchi, Kazutaka Saito, The 112th Annual Meeting of the Japanese Urological Associarion, 18 Apr. 2025, 17 Apr. 2025, 19 Apr. 2025, Poster presentation, Japan, False