Publications by authors named "Kenji Yoshikawa"

Article Synopsis
  • This study examined how central sensitization symptoms relate to pain perception in patients with chronic masticatory myofascial pain transitioning from acute to chronic stages.
  • Researchers tested 23 patients with myofascial pain and 22 healthy volunteers, measuring pain thresholds and central sensitization using various assessments.
  • Results indicated that patients with chronic pain had lower pain thresholds but no correlation between central sensitization scores and pain perception, suggesting that central sensitization might occur before visible symptoms appear.
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Suppressed ion chromatography with perchloric acid deproteinization was developed for the determination of phosphorus in commercially available milk. Although the perchloric acid deproteinization method is widely used in the medical field, it sees limited application in the food industry. Herein, the concentration of perchloric acid and hydrolysis conditions were examined, specifically regarding perchloric acid deproteinization, which was used as a deproteinization method in this study.

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Article Synopsis
  • Mixed lineage leukemia 1-rearranged (MLL1-r) acute leukemia patients have poor treatment responses, necessitating the development of therapies that disrupt the Menin-MLL1 complex, such as the compound DS-1594a.
  • Preclinical evaluations showed that DS-1594a and its salts effectively inhibited the growth of MLL1-r or NPM1c leukemic cells, outperforming traditional chemotherapy like cytrabine in in vitro and in vivo models.
  • DS-1594a, with its potent antitumor effects, suggests potential as a new oral anticancer therapy, distinct from existing treatments, offering hope for improved outcomes in acute leukemia patients.
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Axicabtagene ciloleucel (axi-cel) is an autologous, CD19-targeting chimeric antigen receptor T‑cell therapy. We recently reported the 3-month follow-up results of a phase 2, multicenter, open‑label, single-arm study of axi-cel in Japanese patients with relapsed or refractory (R/R) large B-cell lymphoma (LBCL) (JapicCTI-183914). Here, we present 1-year efficacy and safety data and biomarker analysis data regarding mechanisms of resistance to axi-cel.

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Purpose: Periodontitis progresses with chronic inflammation, without periodontal pain. However, the underlying mechanisms are not well known. Here, the involvement of butyric acid (BA) in periodontal pain sensitivity in Porphyromonas gingivalis (P.

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Background: Axicabtagene ciloleucel (axi-cel) is an autologous chimeric antigen receptor T-cell based anti-CD19 therapy. The ZUMA-1 study, multicenter, single-arm, registrational Phase 1/2 study of axi-cel demonstrated high objective response rate in patients with relapsed/refractory large B-cell lymphoma. Here, we present the results of the bridging study to evaluate the efficacy and safety of axi-cel in Japanese patients (JapicCTI-183914).

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Many of the universal detectors in liquid chromatography, including mass spectrometry, must completely volatilize the chromatographic eluent first before further processing and detection of the analytes. A basic requirement is that the eluent does not contain a nonvolatile dissolved component. However, separation of biomolecules must be conducted in mostly aqueous media of compatible pH and ionic strength if their biological activity must survive the separation process.

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Background: Probiotics use has been associated with modulation of inflammation and considered as a possible intervention for CNS diseases such as mild cognitive impairment (MCI) and dementia.

Objective: We aimed to test the effect of the probiotic strain, Bifidobacterium breve A1 (MCC1274), to restore cognition in a physically healthy, suspected MCI population.

Methods: In this randomized, double-blind, placebo-controlled trial, 80 healthy older adults suffering from MCI were divided into two even groups to receive once daily either probiotic (B.

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Permafrost warming has the potential to amplify global climate change, because when frozen sediments thaw it unlocks soil organic carbon. Yet to date, no globally consistent assessment of permafrost temperature change has been compiled. Here we use a global data set of permafrost temperature time series from the Global Terrestrial Network for Permafrost to evaluate temperature change across permafrost regions for the period since the International Polar Year (2007-2009).

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A high-performance liquid chromatography method with methyl acetoacetate derivatization via the Hantzsch reaction was developed for the analysis of formaldehyde (HCHO) in several water samples. Under optimized conditions, HCHO was detected within 4 min and was not affected by excessive derivatization reagents. The calibration curve constructed from the peak height of HCHO was linear, with a correlation coefficient of 0.

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Approximately 40% of all patients with ovarian cancer in Japan are aged ≥65 years. The aim of the present study was to evaluate the differences in prognosis and prognostic factors between elderly and younger patients with epithelial ovarian cancer. A total of 114 patients with International Federation of Gynecology and Obstetrics (FIGO) stage I-IV ovarian cancer who were initiated on primary treatment at the Osaka City University Hospital (Osaka, Japan) were included in this study.

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We introduce a novel carbonate-bicarbonate eluent generation system in which CO is introduced using programmable CO pressures across a membrane into a flowing solution of electrodialytically generated high purity KOH. Many different gradient types are possible, including situations where gradients are run both on the [KOH] and the CO pressure. The system is more versatile than current electrodialytic carbonate eluent generators and can easily generate significantly higher eluent concentrations (at least to 40 mM carbonate), paving the way for future higher capacity columns.

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Suppressed ion chromatography with the use of a conductivity detector was developed for the determination of sulphite ions in wine samples. When a mixed solution of sodium carbonate, sodium bicarbonate, and acetone was used as the mobile phase, simultaneous determination of eight inorganic anions (i.e.

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We describe herein the design, syntheses and structure-activity relationships (SAR) of novel zwitterionic compounds as non-thiazolidinedion (TZD) based peroxisome proliferator activated receptor (PPAR) α/γ dual agonists. In the previous report, we obtained compound 1 showing potent PPARα/γ dual agonistic activities, together with a great glucose lowering effect in the db/db mice. However, this compound possessed fatal issues such as potent cytochrome P450 (CYP)3A4 direct inhibitory activity.

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Objective: We have improved a transducer holder for transcranial color duplex sonography (TCDS) monitoring via both the temporal and foraminal windows (TW/FW). The objective is to clarify the clinical usefulness of and identify problems with TCDS monitoring in the evaluation of brain tissue perfusion.

Methods: Brain tissue perfusion was monitored in 11 patients (ages 31-94, mean 66).

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Introduction: Sjögren's syndrome (SS) is an autoimmune disorder involving the exocrine glands, which affects 1.9-3.0% of the elderly population.

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Capillary zone electrophoresis with indirect UV detection was developed for the simultaneous analysis of acidulants and preservatives in food samples. When a solution of tris (hydroxymethyl) aminomethane, trimellitic acid and poly (vinyl alcohol) was used as the background electrolyte, the nine acidulants and four preservatives listed in the Japanese Food Sanitation Law were detected within 8min. The calibration curves plotted from the peak height of each analyte were linear with a correlation coefficient of 0.

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We previously reported on a series of cyclohexanediamine derivatives as highly potent factor Xa inhibitors. Herein, we describe the modification of the spacer moiety to discover an alternative scaffold. Ethylenediamine derivatives possessing a substituent at the C1 position in S configuration and phenylenediamine derivatives possessing a substituent at the C5 position demonstrated moderate to strong anti-fXa activity.

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Suppressed ion chromatography with a conductivity detector was developed for the determination of trace amounts of underivatized chloroacetic acids (CAAs). When sodium carbonate and methanol were used as a mobile phase, the simultaneous determination of each CAA took approximately 25 min. The linearity, reproducibility and detection limits were determined for the proposed method.

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A series of cis-1,2-diaminocyclohexane derivatives possessing a 6-6 fused ring for the S1 moiety were synthesized as novel factor Xa (fXa) inhibitors. The synthesis, structure-activity relationship (SAR), and physicochemical properties are reported herein, together with the discovery of compound 45c, which has potent anti-fXa activity, good physicochemical properties and pharmacokinetic (PK) profiles, including a reduced negative food effect.

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A series of cis-1,2-diaminocyclohexane derivatives were synthesized with the aim of optimizing previously disclosed factor Xa (fXa) inhibitors. The exploration of 5-6 fused rings as alternative S1 moieties resulted in two compounds which demonstrated improved solubility and reduced food effect compared to the clinical candidate, compound A. Herein, we describe the synthesis and structure-activity relationship (SAR), together with the physicochemical properties and pharmacokinetic (PK) profiles of some prospective compounds.

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In the early 1990's, we reported on the low-molecular selective fXa inhibitor DX-9065a having two amidino groups. However, it had poor oral bioavailability due to its strong basic amidino groups. To obtain fXa inhibitors with improved oral bioavailability, we investigated various non-amidino fXa inhibitors and finally discovered cis-1,2-diaminocyclohexane derivative 4c to have potent fXa inhibition, promising anticoagulant activity, and good oral bioavailability, compared with amidino compound DX-9065a.

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An intrahepatic mass was incidentally found in a 41-year-old man with a history of a traffic accident injury which resulted in removal of a ruptured spleen. Hepatic splenosis was considered in the differential diagnosis but magnetic resonance imaging showed hypointensity on T2-weighted images, atypical for normal spleen. Histologically, the mass showed sinusoidal structures and lymphoid follicular aggregates.

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Background And Purpose: Symptomatic progression is frequently observed in lacunar infarcts. The exact mechanisms of this phenomenon have not yet been clarified.

Summary Of Cases: We report 2 patients with lenticulostriate artery infarcts that presented with skip lesions that were restricted to gray matter.

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This paper describes the synthesis of orally available potent fXa inhibitors 2 and 3 by modification of the piperazine part of lead compound 1. Carbonyl derivative 3 showed potent fXa activity but not sulfonyl derivative 2. Among the compounds synthesized, cyclohexane derivatives 3g and 3h and cycloheptane derivative 3j had potent anticoagulant activity as well as anti-fXa activity.

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Synopsis of recent research by authors named "Kenji Yoshikawa"

  • - Kenji Yoshikawa's recent research spans diverse topics, including chronic pain mechanisms in masticatory myofascial pain, effective therapeutic strategies for acute leukemia, and advancements in food safety analysis methods.
  • - In the study on masticatory myofascial pain, the association between central sensitivity syndrome and psychophysical factors was examined, revealing important insights about chronic pain transition.
  • - Yoshikawa also reported on a novel Menin-MLL1 inhibitor for leukemia treatment and developed an efficient analytical method for phosphorus determination in milk, indicating a strong focus on both healthcare and food safety applications.