Publications by authors named "Makiyama K"

Lower urinary tract symptoms (LUTS) significantly affect patient quality of life. Treatment options for bladder outlet obstruction (BOO) due to benign prostatic hyperplasia (BPH) (a common cause of LUTS) are insufficient to relieve discomfort. As the incidence of BPH is increasing, new pharmacological targets for LUTS treatment are required.

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Tumor development often requires cellular adaptation to a unique, high metabolic state; however, the molecular mechanisms that drive such metabolic changes in TFE3-rearranged renal cell carcinoma (TFE3-RCC) remain poorly understood. TFE3-RCC, a rare subtype of RCC, is defined by the formation of chimeric proteins involving the transcription factor TFE3. In this study, we analyzed cell lines and genetically engineered mice, demonstrating that the expression of the chimeric protein PRCC-TFE3 induced a hypoxia-related signature by transcriptionally upregulating HIF1α and HIF2α.

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A 28-year-old male presented to his physician with a chief complaint of fever and cough. Contrastenhanced computed tomography revealed a 17×16×8 cm heterogeneous tumor in the anterior mediastinum, as well as right heart and inferior vena cava compression due to the tumor. He was referred to our hospital for close examination and treatment.

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Since contact laser vaporization of the prostate (CVP) was approved by the Japanese insurance system in 2016, the use of a 980 nm diode laser system for CVP has become widespread for treating benign prostate hyperplasia (BPH) patients. Our institute has been implementing CVP for BPH since 2018, treating a total of 93 patients, including 28 with a risk of hemorrhage. This study examines the safety and efficacy of CVP treatment for BPH patients with a hemorrhagic risk.

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Renorrhaphy is often performed after tumor resection during robotic-assisted laparoscopic partial nephrectomy (RAPN). This study aimed to investigate the association between renorrhaphy performance and inflammatory markers. A retrospective cohort study was conducted including patients with renal cell carcinoma who underwent RAPN at eight institutions in Japan between April 2016 and November 2023.

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-rearranged Renal Cell Carcinoma (TFE3-RCC) is an aggressive subtype of RCC characterized by Xp11.2 rearrangement, leading to TFE3 fusion proteins with oncogenic potential. Despite advances in understanding its molecular biology, effective therapies for advanced cases remain elusive.

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Metanephric adenoma is an extremely rare disease. We describe two cases of metanephric adenoma. Case 1 : A 17-year-old male adolescent developed gross hematuria, and urinalysis revealed positive protein and occult blood.

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Background/objectives: Our aim was to compare the complication rates of different embolization materials (absolute ethanol and gelatin sponges) used for combined transarterial embolization (TAE) and to investigate the impact of tumor size on operative time and cryoneedle use during percutaneous cryoablation (PCA).

Methods: We treated 27 patients (9 women and 18 men; mean age, 74 years) with 28 early-stage (T1a) renal cell carcinoma (RCC) lesions using combined TAE and PCA between September 2018 and January 2021. During TAE, 15 lesions in 14 patients were embolized using mixed absolute ethanol and iodized oil.

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Urolithiasis is a globally prevalent disease with high incidence and recurrence rates and is often accompanied by severe pain. Its ideal treatment is spontaneous stone passage, avoiding the invasiveness associated with surgery. However, the mechanisms underlying spontaneous stone passage remain unclear.

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Renal and ovarian clear cell carcinoma (CCC) are both characterized by a clear cytoplasm and exhibit similar genomic alterations and clinical characteristics. We hypothesized that both CCCs may share clinical biomarker. Tissue factor pathway inhibitor 2 (TFPI2), a serine protease inhibitor, has emerged as a promising serum biomarker for ovarian CCC, and we evaluated the efficacy of TFPI2 as a biomarker for renal cell carcinoma (RCC).

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This study investigated the effect of mannitol administration on postoperative renal function during robot-assisted partial nephrectomy (RAPN) in patients with renal cell carcinoma (RCC). Patients with RCC who underwent RAPN at eight Japanese facilities between March 2016 and November 2023 were enrolled. In this study, patients were categorized into two groups according to those who received mannitol during RAPN (Group I) and those who did not receive mannitol (Group II).

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Article Synopsis
  • - The study aimed to compare the effectiveness and safety of neoadjuvant chemohormonal therapy (NCHT) versus radical prostatectomy (RP) alone in patients with high-risk prostate cancer undergoing robot-assisted surgery.
  • - Data from 1,023 patients were analyzed, with results showing that those who received NCHT had a lower rate of biochemical recurrence (15.8% vs. 29.5%) and better pathology outcomes compared to the RP-only group.
  • - The findings indicate that NCHT could be a beneficial pre-surgery treatment for high-risk prostate cancer, improving outcomes without significant safety concerns, although some adverse events were noted.
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A regulatory mechanism for SLC family transporters, critical transporters for sodium and glucose reabsorptions in renal tubule, is incompletely understood. Here, we report an important regulation of SLC family transporter by SETD2, a chromatin remodeling gene whose alterations have been found in a subset of kidney cancers. Kidney-specific inactivation of Setd2 resulted in hypovolemia with excessive urine excretion in mouse and interestingly, RNA-sequencing analysis of Setd2-deficient murine kidney exhibited decreased expressions of SLC family transporters, critical transporters for sodium and glucose reabsorptions in renal tubule.

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Introduction: 45,X/46,XY mosaicism is a rare anomaly in sexual differentiation, presenting with diverse phenotypes and often leading to infertility due to abnormal gonadal development.

Aims: This report aims to present a case study of a 45,X/46,XY mosaic male patient with an ejaculatory disorder attributed to seminal vesicle dysplasia.

Methods: In this case study, diagnostic procedures encompassed blood tests, semen analysis, chromosomal examination, and imaging studies to assess gonadal morphology.

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Background: Cancer survivors in the adolescent and young adult generation often experience marriage, pregnancy, and childbirth after treatment; thus, fertility preservation is very important. In male patients, testicular sperm extraction (TESE) is sometimes performed due to azoospermia. Such a procedure is called oncological TESE (onco-TESE).

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Article Synopsis
  • The study aimed to compare the effects of artery and vein (AV) clamps versus artery-only (AO) clamps on renal function and blood loss during robot-assisted partial nephrectomy (RAPN) in patients with high RENAL nephrometry scores (RNS).
  • Researchers analyzed records from 500 patients and matched them based on various factors, ultimately focusing on 340 patients with malignancies who received either type of clamp.
  • Findings showed no significant differences in blood loss, acute kidney injury rates, or renal function between the two groups, suggesting that AV clamps are safe for patients with moderate-to-high complexity.
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Introduction and objectives The spread of coronavirus disease 2019 (COVID-19) has been a worldwide phenomenon. This study conducted a chronological survey of crisis awareness regarding COVID-19 within different age groups. Methods An internet-based survey was performed on healthy Japanese adults to investigate the value of a hypothetical prophylactic vaccine and therapeutic drug for COVID-19 in each age group.

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Background: Prostate ductal adenocarcinoma, a rare histology observed in 0.4-0.8% of all prostate cancers, is treated similarly to acinar adenocarcinoma but tends to have a higher likelihood of metastasis, recurrence, and poorer prognosis.

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Article Synopsis
  • A rare case was reported where a 71-year-old man with advanced prostate cancer showed simultaneous presence of a BRCA2 mutation and microsatellite instability-high (MSI-high) status.
  • Following various treatments including hormone therapy and docetaxel, the patient's cancer progressed, leading to the introduction of pembrolizumab.
  • Remarkably, after two months of pembrolizumab treatment, the patient experienced a significant reduction in prostate-specific antigen (PSA) levels and a complete response to his metastatic lesions, with no adverse effects noted.
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Background: Schwannomas in the renal hilum are rare among retroperitoneal tumors. However, the possibility of malignant findings cannot be ruled out, and surgery is often indicated. This case was expected to be difficult to remove laparoscopically because the tumor was sandwiched between the arteriovenous veins of the renal portal.

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Introduction: In the United States, a total of 268,490 men were found to have prostate cancer in 2022, thus making it the most common cancer in men, accounting for 27% of all cancers in the male population. Among all cancers in men, it was the fifth leading cause of death, with 34,500 deaths and a mortality rate of 11%. In 2019, the total number of cases was 94,748, making it the leading cancer in males, accounting for 11% of all male cancers.

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The p53 family remains a captivating focus of an extensive number of current studies. Accumulating evidence indicates that p53 abnormalities rank among the most prevalent in cancer. Given the numerous existing studies, which mostly focus on the mutations, expression profiles, and functional perturbations exhibited by members of the p53 family across diverse malignancies, this review will concentrate more on less explored facets regarding p53 activation and stabilization by the nuclear pore complex (NPC) in cancer, drawing on several studies.

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Article Synopsis
  • * An unusual case is reported of a 77-year-old male with SCCB, who showed no response to various chemotherapy treatments but improved significantly after receiving pembrolizumab, a type of immunotherapy.
  • * The patient's condition improved, with decreased metastases, although treatment had to be paused due to immune-related side effects, suggesting pembrolizumab could be a promising option for treating resilient cases of SCCB.
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Background/aim: When hormone therapy (HT) is combined with radiotherapy, understanding the recovery of testosterone levels after the end of HT becomes crucial for considering subsequent therapy. The aim of this study was to determine the factors influencing the time to recovery of testosterone levels after discontinuation of HT and the likelihood of recovery.

Patients And Methods: The study included a total of 108 patients with prostate cancer who were treated with GnRH agonist in combination with radiotherapy and followed up for at least 12 months after discontinuation of the GnRH agonist.

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Recently, biomolecular condensates formed through liquid-liquid phase separation have been widely reported to regulate key intracellular processes involved in cell biology and pathogenesis. BRD4 is a nuclear protein instrumental to the establishment of phase-separated super-enhancers (SEs) to direct the transcription of important genes. We previously observed that protein droplets of BRD4 became hydrophobic as their size increase, implying an ability of SEs to limit the ionization of water molecules by irradiation.

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