Publications by authors named "S I Nitta"

Objective: Our study assessed the correlation between discrepancies in clinical and pathological T stages and overall survival (OS) in patients with upper urinary tract urothelial carcinoma (UTUC), including renal pelvis (UCP) and ureter (UCU) carcinoma, treated with radical surgery.

Methods: We utilized data from the Japanese Hospital-Based Cancer Registry (HBCR) to identify UTUC cases (n = 2376), consisting of UCP cases (n = 1196) and UCU cases (n = 1180), diagnosed with cTa-3N0M0 between 2012 and 2013. All cases were histologically confirmed and treated solely with radical surgery, excluding any chemotherapy or radiotherapy.

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Background: To investigate variations in diagnostic performance of photodynamic diagnosis (PDD) according to surgical experience.

Methods: Data were extracted from patients having pT1 or lower primary tumors that underwent PDD-assisted transurethral resection of bladder tumors (TURBT) with orally 5-amibolevulinic acid at our institute. Surgical experience was categorized by urological experience (first-year and second-year) and PDD experience (<10, 10-19, and ≥20 cases).

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Reactivation of hepatitis viruses during chemotherapy can be problematic in the treatment of malignant lymphomas. However, studies on reactivation of chronic hepatitis C virus (HCV) infection are limited. A 43-year-old woman presented with generalized lymphadenopathy and multiple liver tumors, and she was diagnosed with follicular lymphoma (grade 3a; clinical stage IV).

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Introduction: Exploring techniques for differentiating and culturing canine hepatocytes serves as a means to establish systems for liver transplantation and drug metabolism testing. However, establishing consistent methods for culturing stable hepatocytes remains a challenge. Recently, several investigations have shown the reprogramming of mature hepatocytes into hepatic progenitor cells by applying specific small molecule compounds, including Y-27632, (a ROCK inhibitor), A-83-01 (a TGFβ inhibitor), and CHIR99021 (a GSK3 inhibitor) (termed YAC) in rat, mouse, and humans, respectively.

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The tumor microenvironment (TME) modulates therapeutic response and prognosis in patients with bladder cancer (BC). The roles of two phospholipase D (PLD) isoforms, PLD1 and PLD2 (hydrolysis of phosphatidylcholine to phosphatidic acid), in cancer cells have been well-studied in numerous cancer types, but their roles in the TME remain unclear. We used a mouse BC Pld2-KO carcinogenesis model and global transcriptomic analysis to reveal that PLD2 was significantly involved in BC progression through immunosuppressive pathways in the TME.

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