Publications by authors named "Yuki Sakamoto"

Diffuse sclerosing osteomyelitis (DSO) is a rare, chronic aseptic osteomyelitis of the mandible characterized by resistance to conventional therapies including nonsteroidal anti-inflammatory drugs (NSAIDs), antibiotics, corticosteroids, and surgery. Diagnosis is often delayed due to nonspecific symptoms and lack of typical infectious signs, sometimes resulting in misdiagnosis. We report a case of a 58-year-old male patient with persistent mandibular pain initially misdiagnosed as trigeminal neuralgia and treated with microvascular decompression surgery without improvement.

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Objective: Stroke caused by atrial fibrillation (AF) is associated with high mortality and severe morbidity. Screening patients for AF may facilitate early initiation of anticoagulant therapy and prevent recurrent stroke; therefore, strategies to effectively detect AF in stroke patients are important.

Methods: This prospective multicenter study was conducted between April 27, 2020 and March 31, 2021 at seven sites in Japan, as a substudy of the STABLED trial, a multicenter prospective randomized study to evaluate the efficacy and safety of catheter ablation with anticoagulant therapy using edoxaban in patients with ischemic stroke and AF.

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Background: The optimal blood pressure control strategy after mechanical thrombectomy (MT) is not well understood, especially for patients with successful recanalization. We hypothesized that low systolic blood pressure (SBP) after MT is associated with infarct growth (IG), even in patients with successful recanalization.

Aims: The aim of the present study was to clarify the relationships between IG and SBP parameters in patients treated with MT.

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Coronary microcirculatory dysfunction (CMD) is a known predictor of adverse outcomes after percutaneous coronary intervention (PCI). However, the prognostic significance of CMD in patients with severely calcified lesions treated with rotational atherectomy (RA) remains unclear. We retrospectively studied consecutive chronic coronary syndrome patients who underwent PCI with RA followed by second-generation drug-eluting stent (DES) implantation.

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Background/purpose: Surgical treatment has recently been recommended as a standard therapy for medication-related osteonecrosis of the jaw (MRONJ). However, no established methods exist for determining the extent of bone resection. We aimed to compare preoperative computed tomography (CT) and magnetic resonance imaging (MRI) findings with the histopathological findings of resection materials in patients with MRONJ undergoing surgery.

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Background: Nodular calcification (NC) detected via intracoronary imaging is associated with adverse cardiovascular events after percutaneous coronary intervention (PCI). However, the impact of NC detected on pre-PCI non-contrast computed tomography (CT) on clinical outcomes has not been fully investigated.

Methods And Results: We retrospectively included 267 consecutive patients with chronic coronary syndrome who underwent electrocardiography-gated non-contrast CT before PCI for severely calcified lesions.

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Background: Pericoronary adipose tissue (PCAT) attenuation, measured using coronary computed tomography angiography (cCTA), is a potential marker of coronary inflammation.

Aims: We aimed to examine the association between coronary inflammation, as assessed by measuring PCAT attenuation before percutaneous coronary intervention (PCI), and clinical outcomes of PCI using current-generation drug-eluting stents (DES).

Methods: We retrospectively studied consecutive patients who underwent cCTA before PCI with current-generation DES.

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Background: Details of in-hospital stroke are unknown. This study aimed to clarify the incidence rate and risk factors for in-hospital stroke among all inpatients.

Methods: This retrospective single-center study included consecutive patients admitted to our hospital.

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Background: Constipation, a symptom of autonomic nervous system dysfunction affecting gastrointestinal motility, is common after acute ischemic stroke. The insular cortex is associated with autonomic symptoms, and damage to the left insula may result in constipation. We investigated the association between constipation and left-sided insular infarction in patients with acute stroke.

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The usefulness of conversational robots has been demonstrated in various fields. It is suggested that expressing subjective opinions is essential for conversational robots to stimulate users' willingness to engage in conversation. However, a challenge remains in that users often find it difficult to attribute subjective opinions to robots.

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Background: We compared the effectiveness of direct oral anticoagulants (DOACs) and warfarin for resolving left atrial appendage (LAA) thrombus in patients with acute stroke with non-valvular atrial fibrillation (NVAF).

Methods: Among consecutive patients with acute stroke admitted to five major comprehensive stroke centers in Japan between January 2017 and December 2022, those with NVAF and LAA thrombus detected by transesophageal echocardiography (TEE) and underwent follow-up TEE were included. All patients received DOAC or warfarin treatment.

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Chronic infection with hepatitis B virus (HBV) (chronic HBV infection) places patients at increased risk for liver cirrhosis and hepatocellular carcinoma. Although nucleos(t)ide analogues are mainly used for the treatment of HBV, they require long-term administration and may lead to the emergence of drug-resistant mutants. Therefore, to identify targets for the development of novel anti-HBV drugs, we screened for HBV-suppressive host factors using a plasmid expression library of RNA-binding proteins (RBPs).

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In this systematic review of randomized controlled trials, we examined the optimal blood pressure (BP) target for patients with prior stroke, comparing intensive BP control (systolic BP [SBP] <130 mmHg) with standard BP control (SBP < 140 mmHg). Literature searches of PubMed/MEDLINE, the Cochrane Database, and Ichu-shi identified seven randomized controlled trials for quantitative analysis. Meta-analyses were performed using random-effects models, with most included trials assessed as having low risks of bias.

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Objective: This study evaluated whether first-line treatment affects survival outcomes in patients with advanced urothelial carcinoma undergoing sequential therapy with chemotherapy, immune checkpoint inhibitors, and enfortumab vedotin.

Methods: This multicenter retrospective study included 57 patients treated at Hiroshima University Hospital and its affiliated institutions between 2009 and 2024. Patients received chemotherapy as a first-line treatment (gemcitabine plus cisplatin or carboplatin), followed by second-line immune checkpoint inhibitors (pembrolizumab or avelumab) and third-line enfortumab vedotin.

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Background: Long-term patterns of functional outcome after intracerebral hemorrhage (ICH) have not been well elucidated in population-based studies from low- and middle-income countries. The aim of this study was to define long-term functional outcomes, associated prognostic factors, and recovery patterns for patients with acute ICH.

Methods: We conducted a prospective population-based stroke incidence study in Ulaanbaatar, Mongolia, with prospective follow-up.

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Intentional reimplantation has long been supported by many clinicians as a last resort before tooth extraction. With the accumulation of data and the development of techniques, the survival rate of reimplantation has increased. However, although there have been many reports and studies on replantation for common causes such as root fracture, root resorption, inadequate root canal treatment, perforation, and apical periodontitis, the method of replantation in unusual cases is not yet clear, and many cases result in tooth extraction.

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Background: Infarct volume on diffusion-weighted imaging (DWI) is a promising imaging marker for clinical outcomes in patients with acute stroke treated with mechanical thrombectomy (MT), but its predictive value has not been well evaluated, especially in consecutive patients. The present study aimed to elucidate the relationship between infarct volume and its change and favorable functional outcomes in consecutive patients with acute stroke who underwent MT.

Method: Of patients with consecutive acute stroke who underwent MT from September 2014 through December 2019, those who were pre-morbidly independent were enrolled.

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Introduction Postoperative complications, such as surgical site infection and postoperative pneumonia, may be caused by oral bacteria. This study aimed to clarify the factors related to the bacterial count in the saliva of postoperative patients so as to standardize oral management methods before and after surgery. Methods This prospective observational study enrolled 54 patients who underwent major oncologic or cardiac surgery.

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Article Synopsis
  • Optical coherence tomography (OCT) is used to identify dangerous plaques in patients with acute coronary syndrome (ACS), but manual analysis has its limitations.
  • This study developed a deep-learning model using convolutional neural networks (CNN) and transformers to automatically predict the prognosis of ACS patients from OCT images after they underwent percutaneous coronary intervention (PCI).
  • The deep-learning model showed superior predictive performance for target vessel failure compared to traditional models, indicating that it can effectively analyze OCT images as well as or better than human observers.
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Article Synopsis
  • One system used a zinc finger nuclease to target the human HPRT1 gene for mutation assays, while the other allowed for analysis of homology-directed repair (HR) in a specific cell line.
  • Our findings suggest that inhibiting ATM kinase decreases mutation frequency but increases HR frequency, indicating that ATM activity may help regulate DSB repair pathways.
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Article Synopsis
  • - This study investigated factors predicting persistent swallowing difficulties (dysphagia) after a stroke, focusing on parameters related to muscle loss (sarcopenia) in 302 patients diagnosed with cerebral infarction or hemorrhage.
  • - Key findings indicated that older age, lower tongue pressure, and weaker grip strength were significant predictors of dysphagia at discharge, while other factors like sex and skeletal muscle mass index did not show a strong correlation.
  • - The research concluded that muscle strength is a better indicator of ongoing dysphagia than muscle mass, highlighting the importance of evaluating muscle function in stroke recovery.
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We consider a multiplayer prisoner's dilemma game on a square lattice and regular graphs based on the pairwise-Fermi update rule, and we obtain heatmaps of the fraction of cooperators and the correlation of neighboring pairs. In the heatmap, we find a mixed region where cooperators and defectors coexist, and the correlation between neighbors is significantly enhanced. Moreover, we observe pink-noise behavior in the mixed region, where the power spectrum can be fitted by a power-law function of frequency.

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Figure-eight-shaped nonplanar π-systems adopt distinctive chiral -symmetric structures, which are ideal for realizing efficient circularly polarized luminescence (CPL). However, the short-step and enantioselective synthesis of figure-eight π-systems represents a considerable challenge for the conventional bottom-up synthetic strategy. Herein, we report that the oxidative cleavage of the internal double bond of a commercially available polycyclic aromatic hydrocarbon, i.

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Background: Proprotein convertase subtilisin/kexin type 9 inhibitors stabilize vulnerable plaque, reducing cardiovascular events. However, manual optical coherence tomography (OCT) analysis of drug efficacy is challenging because of signal attenuation within lipid plaques.

Methods And Results: Twenty-four patients with thin-cap fibroatheroma were prospectively enrolled and randomized to receive alirocumab (75 mg every 2 weeks) plus rosuvastatin (10 mg/day) or rosuvastatin (10 mg/day) alone.

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Article Synopsis
  • - Heart failure can reduce blood flow to the brain, potentially affecting recovery after mechanical thrombectomy (MT) in stroke patients, and this study examined the relationship between brain natriuretic peptide (BNP) levels and recovery outcomes.
  • - Data from 169 stroke patients showed that those with favorable outcomes (score of 0-2 on the modified Rankin scale at 3 months) had lower median BNP levels compared to those with unfavorable outcomes, suggesting that higher BNP levels are linked to poorer recovery.
  • - The analysis indicated that patients with BNP levels above 186 pg/mL had a significantly lower rate of favorable outcomes, even when considering other factors like atrial fibrillation, reinforcing the idea that high BNP concentration correlates with
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