Publications by authors named "Yoshimi Tanaka"

Article Synopsis
  • The study examines the gradient flow structure of two variational fracture models for brittle materials: a Griffith-type model and an irreversible fracture phase field model.
  • The Griffith-type model incorporates a velocity-dependent fracture energy, common in polymers, and a corresponding energy dissipation identity is established.
  • The irreversible fracture phase field model is derived as a unidirectional gradient flow and relates its relaxation parameter to the velocity dependence of fracture energy, with comparative analysis validating the findings.
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Purpose: Human epidermal growth factor receptor 3 (HER3) is broadly expressed in breast cancer; high expression is associated with an adverse prognosis. Patritumab deruxtecan (HER3-DXd) is an investigational HER3-targeted antibody-drug conjugate that is being evaluated as a novel treatment in HER3-expressing advanced breast cancer in the U31402-A-J101 study.

Methods: Adults with disease progression on previous therapies were eligible.

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Bevacizumab(BV)combination chemotherapy in colorectal cancer under subcutaneously implanted central venous port (CVP)implantation may cause complications after the implantation. Measurement of D-dimer is recommended to predict thromboembolism and other complications, but its relevance to complications after CVP implantation remains unclear. In this study, we investigated the association between D-dimer and complications after CVP implantation in 93 patients with colorectal cancer who received BV combination chemotherapy.

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Background: We investigated whether butyrylcholinesterase (BChE) was independently related to the overall survival (OS) of patients on maintenance hemodialysis (MHD).

Methods: Baseline information, serum BChE level, and other laboratory data were collected from 295 patients on MHD in a single HD hospital in 2018. We retrospectively investigated the mortality of these patients after 38 months.

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Some types of hydro-gels have almost the same equilibrium swelling volume in water and in ethylene glycol (EG), a highly viscous liquid completely miscible with water. Experiments showed that when a gel fully swollen with EG is immersed into a large amount of water, it temporarily swells up and then relaxes to the equilibrium volume in water. The temporary swelling is explained by the friction force exerted on the gel network from the outward EG flux In this paper, we experimentally show that the temporary swelling is suppressed by adding linear PEG (polyethylene glycol) in the outer water.

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In the present study, we investigated the rate of cisplatin(CDDP)-induced acute kidney injury(CIA)and examined its association with various clinical factors in the combination therapy with CDDP for solid cancers. A total of 726 cases of solid cancer that had been indicated for the CDDP combination regimen from December 2012 to December 2013 were enrolled. CIA occurred in 48 cases(6.

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Background: To investigate whether pre-dialysis level of serum creatinine (SCre) could indicate the responsiveness to zinc supplementation of patients on maintenance hemodialysis (MHD).

Methods: We retrospectively reviewed the results of our previous randomized study of 91 patients who had been on MHD and received zinc supplementation with either zinc acetate hydrate (ZAH; zinc, 50 mg/day) or polaprezinc (PPZ; zinc, 34 mg/day). A late response to zinc supplementation was defined as a serum zinc level of < 80 μg/dL three months after the study began.

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When a gel swollen with a certain solvent is placed in the bath of another solvent, the gel swells or de-swells depending on the thermodynamic affinity to the gel. Toyotama et al. [Langmuir 22, 1952 (2006)] reported an unusual volume change of chemical gels that cannot be explained by the affinity difference: when a chemical gel saturated with water is immersed in ethylene glycol (EG), although those solvents have almost the same affinity to the polymer, the gel first shrinks and then re-swells and finally takes the same equilibrium volume as the initial.

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The efficacy and safety of zinc acetate hydrate (ZAH) for zinc supplementation in patients on maintenance hemodialysis (MHD) remains unknown. In this prospective, single-center, open-label, parallel-group trial for MHD patients with serum zinc level <70 μg/dL, we compared ZAH (zinc; 50 mg/day) and polaprezinc (PPZ; zinc; 34 mg/day) beyond 6-month administration in a 1:1 randomization manner. The ZAH and PPZ groups had 44 and 47 patients, respectively.

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We investigated the incidence of thromboembolism in patients receiving combination chemotherapy with bevacizumab (BV)for colorectal cancer and examined its association with clinical factors. Between July 2007 and April 2014, 250 patients with colorectal cancer received combination chemotherapy with BV. Thromboembolism occurred in 24 cases(9.

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We investigated the incidence of cholinergic symptoms related to irinotecan hydrochloride(CPT-11)and examined their association with clinical factors. The subjects were 61 patients with colorectal cancer for whom combination chemotherapy with CPT-11 was indicated between May 2008 and December 2014. The incidence of CPT-11-related cholinergic symptoms was investigated.

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Purpose: Fetuin-A, which plays a protective role against the atherosclerosis and progression of vascular calcification, is decreased in patients on hemodialysis (HD). Fetuin-A and serum butyrylcholinesterase (BChE) levels decrease during malnutrition. We explored whether BChE was independently related to fetuin-A in patients on HD.

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Backgrounds: Proton pump inhibitors (PPIs) can be associated with vascular calcification in patients undergoing dialysis through hypomagnesemia. However, only few studies have demonstrated the influence of PPIs on vascular calcification in patients on maintenance hemodialysis (HD). This study aimed to investigate whether the use of PPIs accelerates vascular calcification in patients on HD.

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Background: Erythropoiesis-stimulating agent (ESA) responsiveness is related to the nutritional status of patients on hemodialysis (HD). Serum butyrylcholinesterase (BChE), an alpha-glycoprotein, may decrease in case of malnutrition. We investigated whether BChE was independently related to ESA resistance in patients on HD.

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Background: Although aortic calcification has a significant negative impact on prognosis in patients on hemodialysis (HD), risk factors for aortic calcification progression remain unclear. The aim of this study was to investigate the relationship between malnutrition and aortic calcification progression in patients on HD.

Methods: Between April 2015 and October 2016, we treated 232 patients on HD.

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Background: The impact of nail abnormalities on prognosis in hemodialysis patients is unknown. This study investigated whether toenail opacity as a readout of nail abnormalities predicted prognosis in hemodialysis patients.

Methods: In this observational study, 494 eligible hemodialysis patients who received hemodialysis at Oyokyo Kidney Research Institute between September 2010 and December 2015 were included.

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Objectives: To determine the influence of serum uric acid (UA) levels on renal impairment in patients with UA stone.

Materials And Methods: We retrospectively analyzed 463 patients with calcium oxalate and/or calcium phosphate stones (CaOx/CaP), and 139 patients with UA stones. The subjects were divided into the serum UA-high (UA ≥ 7.

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Background: Clinical benefits of presurgical axitinib therapy for renal cell carcinoma (RCC) extending into the inferior vena cava (IVC) remain unclear. We aimed to investigate surgical benefits and pathological antitumor effects of presurgical axitinib therapy for RCC with IVC thrombus.

Methods: Of 56 consecutive RCC patients with IVC thrombus between January 1994 and December 2016, 41 patients who underwent radical nephrectomy (RN) were categorized as upfront RN (Upfront group) or presurgical axitinib followed by RN (Presurgical group).

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Background: The optimal treatment for high-risk prostate cancer (PCa) remains to be established. We previously reported favorable, biochemical recurrence-free survival in high-risk PCa patients treated with a neoadjuvant gonadotropin-releasing hormone agonist or antagonist and estramustine phosphate (EMP) (chemohormonal therapy; CHT) followed by radical prostatectomy (RP). We conducted a retrospective study to elucidate the clinical benefit of neoadjuvant CHT for high-risk PCa patients.

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Background And Objective: A quantitative tumor response evaluation to molecular-targeting agents in advanced renal cell carcinoma (RCC) is debatable. We aimed to evaluate the relationship between radiologic tumor response and pathological response in patients with advanced RCC who underwent presurgical therapy.

Results: Of 34 patients, 31 underwent scheduled radical nephrectomy.

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Under geometric constraints, a thin structure can respond to an external loading in an unexpected way. A paper strip that is looped and pulled can be used for simple experimentation of such a process. Here, we study this seemingly very simple phenomenon in detail by combing experiments and theory.

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We have investigated how the fracture behavior of a polyacrylamide hydrogel is affected by different types of solvents poured into its crack tips. We obtained the following results: first, when water (good solvent or reaction solvent for the polyacrylamide gel) is poured, the fracture energy Γ becomes smaller than that measured in air for small crack velocities V (V ≤ 10 mm s). Second, when good solvents other than water are poured, Γ is enhanced for a large V region (5 ≤ V ≤ 60 mm s), but this effect is not observed for smaller V; Γ(V) in good solvents converges to that in water as V → 0.

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In this study, we investigated the clinical factors associated with acute kidney injury (AKI) due to combination therapy with cisplatin (CDDP) for treating lung cancer. We classified cases according to the presence or absence of adequate hydration and magnesium(Mg)administered above the regulations of the registered regimen to evaluate the effect due to differences in hydration on AKI. We also investigated clinical factors before and after administration of CDDP in each case group, and examined their association with AKI.

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The slime mould Physarum polycephalum is a giant multinucleated cell exhibiting well-known Ca(2+)-dependent actomyosin contractions of its vein network driving the so-called cytoplasmic shuttle streaming. Its actomyosin network forms both a filamentous cortical layer and large fibrils. In order to understand the role of each structure in the locomotory activity, we performed birefringence observations and traction force microscopy on excised fragments of Physarum.

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Crawling using muscular waves is observed in many species, including planaria, leeches, nemertea, aplysia, snails, chitons, earthworms and maggots. Contraction or extension waves propagate along the antero-posterior axis of the body as the crawler pushes the ground substratum backward. However, the observation that locomotory waves can be directed forward or backward has attracted much attention over the past hundred years.

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