Publications by authors named "Akihiro Kawauchi"

Patients with advanced cancer are frequently burdened with a severe sensation of fatigue called cancer-related fatigue (CRF). CRF is induced at various stages and treatments, such as cachexia and chemotherapy, and reduces the overall survival of patients. Objective and quantitative assessment of CRF could contribute to the diagnosis and prediction of treatment efficacy.

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Article Synopsis
  • The article is a translated version of the 2023 Clinical Practice Guidelines for Upper Tract Urothelial Carcinoma (UTUC) by the Japanese Urological Association (JUA), aiming to guide clinicians in evidence-based management.
  • The updated guidelines were developed following a structured approach, reviewing various aspects of UTUC, including epidemiology, diagnosis, treatment, and follow-up, while addressing seven key clinical questions.
  • The guidelines also emphasize the importance of balancing benefits and harms in medical decisions and call for ongoing evaluation and refinement based on new evidence and clinical issues.
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A 46-year-old woman was referred for hypertension and a right adrenal tumor. Primary aldosteronism (PA) was suspected because of the high plasma aldosterone concentration-to-plasma renin activity ratio. However, a subsequent evaluation revealed coexistent PA and pheochromocytoma.

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Pembrolizumab has been widely used to treat advanced urothelial carcinoma that has progressed after first-line platinum-based chemotherapy. Because its clinical benefits are limited, biomarkers that can predict a good response to pembrolizumab are required. The prognostic nutritional index (PNI), calculated using the serum albumin level and peripheral lymphocyte count, has been evaluated as a predictive biomarker in cancer immunotherapy.

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A 76-year-old woman was referred to our department because of high fever and bladder irritative symptoms. Computed tomography revealed the presence of a heterogeneous mass with indistinct borders on the left anterior wall of the bladder. The lesion contained a linear hyperdense shadow.

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Fibrosis is an important pathological mechanism in heart failure (HF) and is associated with poor prognosis. We analyzed fibrosis in HF patients using transcriptomic data. Genes differentially expressed between normal control and congestive HF (CHF) dogs included P3H1, P3H2, P3H4, P4HA2, PLOD1 and PLOD3, which belong to the 2-oxoglutarate-dependent dioxygenases (2OGD) superfamily that stabilizes collagen during fibrosis.

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Prostate cancer is the most common genitourinary cancer in men. Population-based serum prostate-specific antigen (PSA) testing is used to screen men for the early detection of asymptomatic prostate cancer. The present study compared the features of patients with prostate cancer in Kusatsu City, the only municipality in Shiga Prefecture of Japan to implement organized PSA screening, with those in other municipalities.

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Metabotropic glutamate receptor subtype 7 (mGluR7) is a member of the group III mGluRs, which localize to presynaptic active zones of the central nervous system. We previously reported that mGluR7 knockout (KO) mice exhibit ejaculatory disorders, although they have normal sexual motivation. We hypothesized that mGluR7 regulates ejaculation by potentiating the excitability of the neural circuit in the lumbosacral spinal cord, because administration of the mGluR7-selective antagonist into that region inhibits drug-induced ejaculation.

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Long-term bladder regeneration has not been successful instead of augmentation with gastrointestinal segments, as is commonly performed for bladder reconstruction. To evaluate whether or not cell-seeded bioabsorbable materials regenerate half-resected bladder in a rabbit model. Female Japanese white rabbits were divided two groups: cell-seeded material (CSM) group and Control ( = 6 each).

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Background/aim: γ-Glutamylcyclotransferase (GGCT) is up-regulated in a broad range of cancers, including breast cancer, and GGCT inhibition has been shown to be a promising strategy for therapy. Herein, we evaluated the efficacy and mechanism of action of pro-GA, a GGCT enzymatic inhibitor, in MCF7 breast cancer cells.

Materials And Methods: Proliferation was evaluated by WST-8 and trypan blue dye exclusion assays.

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The present study aimed to use real-world Japanese data to compare the treatment outcome of conventional hormonal therapy to that of using androgen receptor axis-targeted (ARAT) agents for patients with metastatic castration-resistant prostate cancer. The overall survival between the conventional hormonal therapy group and the ARAT agent therapy group was compared using a group of 75 Japanese patients who were treated for metastatic castration-resistant prostate cancer. A subgroup analysis was carried out and the risk factors that affected overall survival (OS) were determined.

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Pyruvate dehydrogenase kinase 4 (PDK4) is an important regulator of energy metabolism. Previously, knockdown of PDK4 by specific small interfering RNAs (siRNAs) have been shown to suppress the expression of Κirsten rat sarcoma viral oncogene homolog (KRAS) and the growth of lung and colorectal cancer cells, indicating that PDK4 is an attractive target of cancer therapy by altering energy metabolism. The authors previously reported that a novel small molecule, cryptotanshinone (CPT), which inhibits PDK4 activity, suppresses the three‑dimensional (3D)‑spheroid formation and tumorigenesis of KRAS‑activated human pancreatic and colorectal cancer cells.

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Background/aim: γ-Glutamyl cyclotransferase (GGCT) is up-regulated in various cancer types, including lung cancer. In this study, we evaluated efficacy of gapmer-type antisense oligonucleotides (ASOs) targeting GGCT in an A549 lung cancer xenograft mouse model and studied their mechanisms of action.

Materials And Methods: GGCT was inhibited using GGCT-ASOs and cell proliferation was evaluated by dye exclusion test.

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By mimicking the extracellular matrix, nonwoven fabrics can function as scaffolds for tissue engineering application ideally, and they have been characterized regarding their fiber diameter and fiber spacing (spacing size) in vitro. We chronologically examined the in vivo effects of these fabrics on the cellular response and tissue remodeling. Four types of nonwoven polyglycolic acid fabrics (Fabric-0.

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Article Synopsis
  • Prohibitin-2 (PHB2) is a protein that has multiple functions, including interaction with GGCT in the cytoplasm and gene repression in the nucleus.
  • The drug fluorizoline binds to PHB1/2, showing potential to inhibit the growth of cancer cells by inducing p21 expression, particularly in MCF7 breast cancer cells.
  • The study suggests that fluorizoline's anticancer effects involve blocking cell proliferation through p21 induction and disrupting the interaction between PHB2 and GGCT, which affects PHB2 localization in the nucleus.
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Background: In all the prefectures of Japan, with the exception of Shiga Prefecture, more than half of local governments have an organized prostate-specific antigen (PSA) screening system in place. However, in the Shiga Prefecture, only a single city performed PSA screening over the time period of this survey. The purpose of the present study was to determine the clinical, pathological, and therapeutic features of newly diagnosed prostate cancer in localities where a formally organized screening system was almost entirely absent.

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Background: We report two cases in which severe skin disorders developed during sorafenib treatment in patients with renal cell carcinoma (RCC) who had previously received nivolumab.

Case Report: Case 1: A 50-year-old man with RCC received nivolumab as the fifth-line therapy followed by sorafenib as the sixth-line therapy. On day 15 of sorafenib administration, the patient was hospitalized with systemic erythema multiforme, acne-like skin rash, and hand-foot syndrome.

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BACKGROUND Cabazitaxel is a second-generation taxane approved for patients with metastatic castration-resistant prostate cancer (CRPC). Although cabazitaxel improves overall survival when used following docetaxel chemotherapy, duration of the clinical response is relatively short, and few patients achieve a long-term response. CASE REPORT A 71-year-old man with prostate adenocarcinoma with an initial prostate-specific antigen (PSA) level of 4956 ng/ml, Gleason score 4+5 and cTxN0M1b was referred to our department for treatment.

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The phosphorylation of pyruvate dehydrogenase (PDH) by pyruvate dehydrogenase kinase (PDK) 4 inhibits its ability to induce a glycolytic shift. PDK4 expression is upregulated in various types of human cancer. Because PDK4 regulation is critical for metabolic changes in cancer cells, it is an attractive target for cancer therapy given its ability to shift glucose metabolism.

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Article Synopsis
  • Fluorescence image-guided surgery enhances the visibility of anatomical structures during operations, particularly for vascular anatomy.
  • In a case study, indocyanine green (ICG) fluorescence imaging successfully identified a recurrent small tumor in a 39-year-old patient undergoing laparoscopic surgery for renal cell carcinoma (RCC).
  • The tumor was clearly visualized using ICG, allowing for its complete resection, and the patient remained disease-free for two years post-surgery, suggesting the technique is beneficial for locating small metastatic lesions of RCC.
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The growth and progression of cancers are crucially regulated by the tumor microenvironment where tumor cells and stromal cells are mutually associated. In this study, we found that stomatin expression was markedly upregulated by the interaction between prostate cancer cells and stromal cells. Stomatin suppressed cancer cell proliferation and enhanced apoptosis and inhibited xenograft tumor growth .

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The conventional two-dimensional (2D) culture is available as an in vitro experimental model. However, the culture system reportedly does not recapitulate the in vivo cancer microenvironment. We recently developed a tissueoid cell culture system using Cellbed, which resembles the loose connective tissue in living organisms.

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Background: This study evaluated the efficacy of a single instillation of pirarubicin with a short retention time for preventing intravesical recurrence of low-risk non-muscle-invasive bladder cancer.

Patients And Methods: We analyzed 165 patients with low-risk non-muscle-invasive bladder cancer who underwent transurethral surgery. Single instillation of pirarubicin with 15-min retention time immediate after surgery was performed in 47 (28%) patients.

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Metabolic reprogramming leading to aerobic glycolysis, termed the "Warburg effect," is a critical property of cancer cells. However, the precise mechanisms underlying this phenomenon are not fully understood. A growing body of evidence indicates that γ-glutamylcyclotransferase (GGCT), an enzyme involved in glutathione homeostasis that is highly expressed in many types of cancer, represents a promising therapeutic target.

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