- Sperm and Testicular Function
- Sexual Differentiation and Disorders
- Urological Disorders and Treatments
- Prostate Cancer Diagnosis and Treatment
- Testicular diseases and treatments
- Urologic and reproductive health conditions
- Pediatric Urology and Nephrology Studies
- Renal cell carcinoma treatment
- Reproductive Biology and Fertility
- Hormonal and reproductive studies
- Prostate Cancer Treatment and Research
- Spaceflight effects on biology
- Bladder and Urothelial Cancer Treatments
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Kidney Stones and Urolithiasis Treatments
- Animal Genetics and Reproduction
- Urinary and Genital Oncology Studies
- Radiation Therapy and Dosimetry
- Reproductive Health and Technologies
- Urinary Bladder and Prostate Research
- Renal and related cancers
- Minimally Invasive Surgical Techniques
- Sarcoma Diagnosis and Treatment
- Male Reproductive Health Studies
- Renal and Vascular Pathologies
Nagoya City University
2015-2025
Nagoya Medical Center
2017-2025
Shibaura Institute of Technology
2025
Kurashiki Medical Center
2017
Mizuho (Japan)
2004-2014
Aichi Medical University
2011
Anjo Kosei Hospital
2009
Meijo Hospital
2004
Kindai University
1996
We investigated the association between kidney stones and coronary heart disease risk factors in Japanese men.This cross-sectional study included 13,418 men 30 to 69 years old who voluntarily underwent medical examination April 1995 March 2001. Participants were divided into controls, past current stone formers based on ultrasound results history. evaluated conventional of disease, including overweight/obesity, hypertension, diabetes mellitus, gout/hyperuricemia, dyslipidemia chronic...
Abstract Purpose To investigate the incidence, etiology, treatment indications, and outcomes regarding infertile male patients in Japan. Methods Between April, 2014 March, 2015, authors contacted 47 clinical specialists infertility who had been certified by Japan Society for Reproductive Medicine. The participating clinicians were sent a questionnaire information on their patients, according to etiology number success rates of operations that performed practice. Results Thirty‐nine returned...
Introduction Page kidney causes secondary hypertension due to external compression of the renal parenchyma and hypoperfusion. Case presentation A 21‐year‐old healthy man was diagnosed with during a medical examination 3 months after he had gotten bruise at right lumbar region. The patient's blood pressure 176/120 mmHg. Computed tomography showed large encapsulated cystic lesion around severe parenchyma. Dimercaptosuccinic acid scintigraphy revealed decreased split function. Therefore,...
These 2024 guidelines address male infertility amid Japan's declining birth rate, following the recent provision of national health insurance coverage for treatments. Male factors contribute to approximately 50% cases, with spermatogenic dysfunction being most common cause (82.4%). The provide evidence-based recommendations diagnosing and treating infertility. Diagnostic approaches include comprehensive medical history, physical examination, semen analysis, hormone testing, genetic testing...
No AccessJournal of UrologyPediatric Urology1 Aug 2012Ureteral Advancement in Patients Undergoing Laparoscopic Extravesical Ureteral Reimplantation for Treatment Vesicoureteral Reflux Yoshiyuki Kojima, Kentaro Mizuno, Yukihiro Umemoto, Takahiro Yasui, Yutaro Hayashi, and Kenjiro Kohri KojimaYoshiyuki Kojima More articles by this author , MizunoKentaro Mizuno UmemotoYukihiro Umemoto YasuiTakahiro Yasui HayashiYutaro Hayashi KohriKenjiro View All Author...
Melamine was recently identified as a risk factor for renal calculi following the milk powder contamination in China. However, long-term natural history of melamine exposure and its effects remain unknown. We evaluated function other adverse health using rat model administered cyanuric aid, considering age sex. Twelve male F334/N rats each ages 6, 10, 26 weeks (N = 36) were equally assigned to Group M + C or controls. 12 mg · kg-1 day-1 acid 28 days. Serum urine samples kidney sections on...
To determine the effect of prostate weight on preoperative and postoperative outcomes robotic-assisted laparoscopic radical prostatectomy with a posterior approach to seminal vesicle. This retrospective study examined prospectively collected data 219 prostatectomies performed from May 2011 February 2013. Patients were divided into four groups based pathologic weight: <30 g, 30–49 50–79 ≥80 g. Continence sexual function assessed using validated questionnaires. Of patients, 19, 143, 51, 6 had...
In cryptorchidism, germ cell development failure presents from infancy and may be reflected by altered hormonal levels produced Sertoli cells. Our object was to assess for associations between serum hormone testicular histopathology in cryptorchidism with an infertility risk according the pretreatment undescended positions.Prepubertal cryptorchid boys aged 7-91 (median 20) months who underwent orchidopexy 2014 2019 were included (122 unilateral [median 19 {range 7-91}], 23 bilateral [24...
We examined changes in the serum testosterone level and sperm testis epididymis by using tail-suspended mice, which are a simulation model of body fluid shift space, to evaluate possibility spermatogenesis failure space environment. also studied pathological disorders mice. Tail suspension was imposed with tail harness degree at hindlegs mice did not touch floor housing unit. In control similarly fixed impose same stress, except that hindleg remained on floor. Body weight significantly...
Summary Obesity is reported to have adverse effects on semen quality and the endocrine system. In this study, we evaluated effect of obesity sperm retrieval outcome reproductive hormone levels in Japanese men with non‐obstructive azoospermia ( NOA ). This study based clinical records 217 [172 a 46, XY karyotype, 45 Klinefelter syndrome KS )] who underwent microdissection testicular extraction at Nagoya City University Hospital between January 2004 December 2014. Body mass index BMI ) serum...
Some preoperative factors affecting the outcome of microdissection testicular sperm extraction (micro-TESE) have been previously evaluated. However, other than Klinefelter syndrome (KS), no chromosomal anomalies discussed in context retrieval outcomes. The objective this study was to describe and their relationship with outcomes patients non-obstructive azoospermia (NOA). Of 197 NOA whose clinical records were retrospectively reviewed, 144 (73.1%) had normal 46,XY karyotype, 40 (20.3%) KS...
Objectives To experimentally evaluate the clinical application of N ‐methyl‐4‐isoleucine cyclosporin, a novel selective inhibitor cyclophilin D activation. Methods In vitro, cultured renal tubular cells were exposed to calcium oxalate monohydrate crystals and treated with cyclosporin. The mitochondrial membrane was stained tetramethylrhodamine ethyl ester perchlorate observed. vivo , S prague– awley rats divided into four groups: control group, an ethylene glycol group (administration induce...
The patient was a 9-year-old premenarcheal pediatric female, whose chief complaint well-circumscribed palpable right breast mass without nipple discharge. Although the had noticed lump 2 years prior to hospital admission, its size (1.5 × 1.3 cm) been stable. There no family history or previous of malignancies. Physical examination showed well-delimited, elastic-firm and movable tumor just beneath areolar complex. Regional lymph nodes were not palpable. Ultrasonography computed tomography...
Objectives To compare the surgical outcomes of laparoscopic radical prostatectomy and robot‐assisted prostatectomy, including frequency location positive margins. Methods The study cohort comprised 708 consecutive male patients with clinically localized prostate cancer who underwent ( n = 551) or 157) between J anuary 1999 S eptember 2012. Operative time, estimated blood loss, complications, margins were compared prostatectomy. Results There no significant differences in age body mass index...
Robot-assisted radical prostatectomy (RARP) is commonly performed using the transperitoneal (TP) approach with six trocars over an 8-cm distance in steep Trendelenburg position. In this study, we investigated feasibility and benefit of extraperitoneal (EP) a 4-cm flat or 5° We also introduced four new steps to surgical procedure compared results complications between EP TP propensity score matching. Between August 2012 2016, 200 consecutive patients without any physical restrictions...
The role of cyclooxygenases (COX) in the male reproductive organ remains unclear. However, there are some reports suggesting that COX-2 might have an effect on spermatogenesis or steroidogenesis. In this study, we examined whether was induced impaired testes, and also investigated possible COX testes using experimental cryptorchidism model mice. Five-week-old mice underwent operation to induce unilateral via abdominal incision suturing left lateral wall, they were then divided into 3 groups:...
Background and Aims: We carried out clinostat parabolic flight experiments to examine the effects of a microgravity (µG) environment on human sperm motility. Methods: Semen samples were obtained manually from 18 healthy men (aged 27.4 ± 5.4 years) who had given their informed consent. In experiments, that left stationary used as control. Samples rotated vertically horizontally rotation control rotation, respectively. using jet plane, motility was compared for each parameter at µG, 1G 2G. The...