Publications by authors named "Shirakawa S"

The suitability of tuna by-product meal (TBM) as a replacement for fish meal (FM) in the diet of juvenile greater amberjack was investigated for its effect on growth, mercury (Hg) levels in the fish body, phosphorus (P) load, and plasma chemistry. FM was the main protein source in the control diet (C), and it was replaced by TBM at 25%, 50%, 75%, and 100% to formulate diets TM25, TM50, TM75, and TM100, respectively. The experiment was performed in triplicate, stocking 30 juveniles (mean weight: approximately 6.

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Background & Aims: Exercise therapy is a potentially beneficial treatment option for chemotherapy-induced peripheral neuropathy (CIPN). However, there is a lack of consensus on the management of CIPN in patients with ovarian cancer. The purpose of this scoping review was to evaluate the evidence on the effectiveness of exercise therapy in patients with ovarian cancer and explore key physical fitness parameters.

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The majority of theoretical analyses of evolutionary algorithms in the discrete domain focus on binary optimization algorithms, even though black-box optimization on the categorical domain has a lot of practical applications. In this paper, we consider a probabilistic model-based algorithm using the family of categorical distributions as its underlying distribution and set the sample size as two. We term this specific algorithm the categorical compact genetic algorithm (ccGA).

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Enantioselective halolactonizations of sterically less hindered alkenoic acid substrates without substituents on the carbon-carbon double bond have remained a formidable challenge. To address this limitation, we report herein the asymmetric bromolactonization of 5-hexenoic acid derivatives catalyzed by a BINOL-derived chiral bifunctional sulfide.

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  • The study aimed to analyze treatment patterns for biliary tract cancer (BTC) in Japan and investigate how often biliary infections affect treatment.
  • Data was collected from over 22,000 patients diagnosed with BTC who received systemic therapies between 2011 and 2020, revealing that most patients were older males with extrahepatic cholangiocarcinoma being the most common type.
  • Findings indicated that nearly 30% of patients experienced treatment delays due to biliary infections, with specific details on antibiotic duration and timing of infections occurring during therapy.
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Both natural and unnatural amino acids, peptides, and proteins are widely recognized as green and sustainable organic chemicals, not only in the field of biological sciences but also in materials science. It has been discovered that artificially designed unnatural peptides and proteins exhibit advanced properties in medical and materials science. In this context, the development of precise chemical modification methods for amino acids and peptides is acknowledged as an important research project in the field of organic synthesis.

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Background: Gynecologic cancers are one of the most common types of malignancies in working-age women. We aimed to determine the factors that impede women from returning to the same workplace after treatment for such cancers.

Methods: A questionnaire-based survey was conducted on 194 women who underwent treatment for gynecologic cancer at the Okayama University (≥1 year after cancer treatment and <65 years of age).

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Background: Tongue coating consists of oral bacteria, desquamated epithelium, blood cells, and food residues and is involved in periodontal disease, halitosis, and aspiration pneumonia. Recently, a tongue brush with sonic vibration was developed to clean the tongue. This comparative study examined the extent of tongue coating, its effects on the tongue, bacterial count particularly on the posterior dorsum of the tongue, and the degree of pain using a manual tongue brush and the newly developed sonic tongue brush.

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Neural architecture search (NAS) is a framework for automating the design process of a neural network structure. While the recent one-shot approaches have reduced the search cost, there still exists an inherent trade-off between cost and performance. It is important to appropriately stop the search and further reduce the high cost of NAS.

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Objective: Antiplatelet therapy is advised to prevent thrombotic complications during endovascular coil embolization of unruptured cerebral aneurysms. Due to multiple antithrombotic treatments, bleeding risk is a concern in patients using oral anticoagulants for existing comorbidities. We investigated the hemorrhagic and ischemic events following endovascular treatment (EVT) of unruptured cerebral aneurysms in patients taking anticoagulation and antiplatelet therapy.

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The catalytic potential of organo-onium iodides as nucleophilic catalysts is aptly demonstrated in the synthesis of cyclic carbonates from epoxides and carbon dioxide (CO ), as a representative CO utilization reaction. Although organo-onium iodide nucleophilic catalysts are metal-free environmentally benign catalysts, harsh reaction conditions are generally required to efficiently promote the coupling reactions of epoxides and CO . To solve this problem and accomplish efficient CO utilization reactions under mild conditions, bifunctional onium iodide nucleophilic catalysts bearing a hydrogen bond donor moiety were developed by our research group.

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The abscopal effect is a rare phenomenon, in which tumor shrinkage in the nonirradiated metastatic region is observed after radiotherapy. Certainly, this response is sometimes reported with the combined use of immune-checkpoint inhibitors, but a pure abscopal effect is extremely rare, especially in endometrial cancer. We present the case of a 79-year-old woman with an advanced endometrial carcinosarcoma.

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Catalytic asymmetric bromocyclizations of generated carbamic acids from CO and allylamines were achieved the use of a BINOL-derived chiral bifunctional selenide catalyst bearing a hydroxy group. Chiral 2-oxazolidinone products as important pharmaceutical building blocks were obtained with good enantioselectivities by the present catalytic asymmetric CO utilization reactions.

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Asymmetric organocatalysis using well-designed artificial chiral molecular catalysts is one of the most reliable methods to create important chiral compounds in a highly enantioenriched form. A wide variety of efficient asymmetric transformations have been developed by utilizing well-designed chiral organocatalysts. Among the wide variety of organocatalysts, chiral amine and phosphine catalysts that utilize the characteristics of group 15 elements are the most extensively employed for asymmetric transformations.

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An efficient enantioselective synthesis of γ-chiral α-spiro-γ-lactones, which are important building blocks for pharmaceuticals, was achieved via BINOL-derived chiral bifunctional sulfide-catalyzed bromolactonizations of α-allyl carboxylic acids containing either hetero- or carbocyclic structures. Transformations of the resultant α-spiro-type bromolactonization product were examined to obtain optically active γ-functionalized α-spiro-γ-lactones. The utility of this catalytic system was also demonstrated in the asymmetric synthesis of α,α-diaryl- and dialkyl-substituted γ-lactones.

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  • Cold agglutinin disease (CAD) is a rare autoimmune hemolytic anemia where red blood cells clump together at lower temperatures, leading to anemia symptoms, and splenectomy is usually not effective for it.
  • A 60-year-old man diagnosed with CAD experienced persistent anemia and was treated with conventional methods like blood transfusions, but his condition did not improve.
  • After a splenectomy, aimed at investigating a possible malignancy and alleviating his anemia, the patient's condition improved significantly, suggesting splenectomy could be a potential treatment for refractory CAD.
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Recent reports show that hemoglobin A1c (HbA1c) can be lowered by improving chronic inflammation in periodontal patients with diabetes mellitus and that full-mouth scaling and root planing (FM-SRP), in combination with azithromycin (AZM) treatment, can reduce early periodontal inflammation. However, the association of FM-SRP and AZM with periodontitis and HbA1c in patients with diabetes is largely unknown. This study investigated periodontitis and HbA1c in patients with diabetes after receiving FM-SRP and AZM to evaluate which clinical parameters most reflect the diabetic condition.

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Purpose: As we are exposed to stress on a daily basis, it is important to detect and treat stress during the subclinical period. However, methods to quantify and confirm stress are currently unavailable, and the detection of subclinical stressors is difficult. This study aimed to determine whether manganese-enhanced magnetic resonance imaging (MEMRI) could be used to assess stress in rat brains.

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1,1'-Bi-2-naphthol (BINOL)-derived chiral bifunctional sulfide and selenide catalysts that possess a hydroxy group are known to be effective catalysts for enantioselective bromolactonizations. When applied to asymmetric iodolactonizations of 4-pentenoic acids, these catalysts yield chiral γ-butyrolactone products that are important compounds in medicinal chemistry. Although chiral bifunctional selenides have shown good catalytic performances in enantioselective iodolactonizations, reactions with BINOL-derived chiral sulfide catalysts unexpectedly gave iodolactonization products in nearly racemic forms.

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This prospective pilot study aimed to evaluate the effect of minocycline-HCl ointment (MO), locally delivered as an adjunct to scaling and root planing (SRP), on subgingival microflora. A total of 59 periodontitis patients received SRP as an initial periodontal therapy. In the selected periodontal pockets with probing depths (PD) of 6−9 mm, the sites that exhibited a positive reaction following a bacterial test using an immunochromatographic device were subsequently treated with MO (SRP + MO group, n = 25).

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Although the wide variety of heterocyclic compounds is common knowledge, chiral 2-oxazolidinones are recognized as some of the most important heterocycles in medicinal chemistry. Many important pharmaceutical molecules have been constructed based on the chiral 2-oxazolidinone backbone. Therefore, the development of even more efficient catalytic methods for the synthesis of chiral 2-oxazolidinones remains a very important pursuit in the field of synthetic organic chemistry.

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  • Conversational gestures are essential for creating natural interactions with virtual agents and robots, and this study focuses on a deep learning approach to generating these gestures from spoken text.
  • The model uses a convolutional neural network to convert sequences of spoken words into 2D joint coordinates that represent gestures, and it leverages a custom dataset combining gesture motions with spoken text to train the network.
  • The findings suggest that the new model performs at least as well as existing models in generating gestures, highlights the importance of data management and loss function in model performance, and shows that it can adapt well between different speakers.
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Background: Pancreatic ductal adenocarcinoma (PDAC) has a high recurrence rate even after curative resection. Lung recurrence may have better outcomes than other recurrences. However, its detailed clinicopathological features are unclear.

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Article Synopsis
  • * Six months later, the tumor grew larger and was confirmed to be a metastasis of the pancreatic cancer, which had not spread to other organs.
  • * After surgical removal of the tumor, the patient has been healthy for 1.5 years, demonstrating that distant metastasis can be effectively managed with surgery when limited to specific areas like the jejunal mesentery.
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