Researchers Database

OOSAKA AKIYOSHI

Affiliation： Department of Urology

Last Updated :2026/04/21

Original paper

Review paper

Other

SRY-Positive 46, XX Testicular Disorder of Sexual Development With Leydig Cell Tumor, Akiyoshi Osaka, Hisamitsu Ide, Kentaro Matsuoka, Toshiyuki Iwahata, Yoshitomo Kobori, Shinichi Ban, Hiroshi Okada, and Kazutaka Saito, American Journal of Men's Health, 2020
DOI

Home collected semen samples negatively affect semen parameters, 21 Apr. 2023, 20 Apr. 2023, 23 Apr. 2023, Poster presentation, Japan, False

Sperm cryopreservation for 6 cases that Male-to-Female(MTF)persons prior to gender-affirming care, Miho Sugie, Toshiuki Iwahata, Akiyoshi Oosaka, Tomoe Koizumi, Yoshitomo Kobori, Hiroshi Okada, Sugimoto Kouhei, Kazutaka Saito., 26 Apr. 2024

Testicular sperm retrieval in hemodialysis patients with sexual dysfunction, Akiyoshi Oosaka, Toshiyuki Iwahata, Erika Ikezoe, Minoru Inoue, Hiroki Tsujioka, Kintaro Hasegawa, Nirazuka Asumi, Miho Sugie, Yuka Yasuda, Keita Izumi, Akinori Nakayama, Hiroshi Okada, Kazutaka Saito., 26 Apr. 2024

Thirty-five is the critical age for deterioration in oocyty activation capacity of spermatozoa in subfertile men, Hiroshi Okada, Takeshi Shin, Yukihito Simomura, Kazutaka Terai, Ippei Hiramatsu, Miho Sugie, Uemura Keiichiro, Akiyoshi Oosaka, Toshiyuki Iwahata, Kazutaka Saito, Kouhei Sugimoto., 26 Apr. 2024

Algorithm for neoadjuvant chemotherapy in nonmetastatic upper tract urothelial carcinoma, Asumi Nirazuka, Keita Izumi, Erika Ikezoe, Minoru Inoue, Hiroki Tsujioka, Kinotaro Hasegawa, Akiyoshi Oosaka, Yuka Yasuda, Akinori Nakayama, Kiyoshi Setoguchi, Kazutaka Saito., 25 Apr. 2024

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

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

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, Oral presentation, 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

FERTILITY PRESERVATION IN BOYS AGED 15 YEARS AND YOUNGER : A RETROSPECTIVE STUDY AT A SINGLE CENTER IN JAPAN, Toshiuki Iwahata, Akiyoshi Oosaka, Yuta Marumo, Tomoe Koizumi, Hiroshi Okada, Kouhei Sugimoto., American Society for Reproductive Medicine2025, 28 Oct. 2025, 25 Oct. 2025, 29 Oct. 2025, San Antonio, Texas, True