Publications by authors named "Ishiyama H"

Background: Awake bruxism involves masticatory muscle activity during wakefulness, potentially leading to clinical concerns. Accurate electromyography (EMG) assessment is challenging with brief durations.

Objective: To establish a reliable, short-term measure for nonfunctional masseter muscle activity during wakefulness.

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Background: Adrenomedullin has angiogenic and vasoprotective effects in acute ischemic stroke (AIS). This investigator-initiated trial aimed to evaluate the safety, efficacy, and optimal administration of adrenomedullin in treating AIS.

Methods: In this single-center, multi-cohort, double-blinded, randomized, placebo-controlled, Phase II trial, patients with AIS received pulsed adrenomedullin (9 ng/kg/min for 8 h daily over 7 days) or placebo in the first-half cohort, and continuous-pulsed adrenomedullin (9 ng/kg/min for 72 h during the first 3 days and 8 h daily between Day 4-7) or placebo in the second-half cohort.

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  • NOTCH3cys variants are common and linked to various small vessel diseases, including early-onset stroke and dementia, but there is no comprehensive staging system to assess their severity.
  • A cohort study created and validated a simple staging system for NOTCH3-SVD by analyzing data from several international cohorts and the UK Biobank, focusing on the impact of these variants on CVD outcomes and cognition.
  • The new system includes 9 disease stages, aiding in understanding the relationship between stages and clinical outcomes like ischemic strokes, cognitive function, and brain damage.
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Objective: Stent retriever (SR) angioplasty is an adjunctive technique for acute large vessel occlusion stroke due to underlying intracranial atherosclerotic disease (ICAD-LVO). Prolonged SR deployment maintains blood flow distal to the atherosclerotic lesion until the antiplatelet agent has exerted its effect. Although SR angioplasty for ICAD-LVO has been reported, few reports are available on SR angioplasty for medium vessel occlusion stroke due to underlying ICAD (ICAD-MeVO).

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Purpose: This network meta-analysis (NMA) of randomized controlled trials (RCTs) aimed to identify effective initial conservative treatment strategies for patients with temporomandibular joint disorders (TMD).

Study Selection: RCTs comparing treatment options for TMD published between January 2000 and July 2021 were retrieved from the databases of PubMed and Embase via a comprehensive electronic search. Patients diagnosed with myalgia (muscle pain) or arthralgia (joint pain) according to pain-related Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) and the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) were eligible for inclusion.

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Objectives: Recent advancements in genome research have revealed not only the importance of variants associated with cerebrovascular diseases but also a notably high frequency of carriers harboring multiple variants, presenting with an elusive blended phenotype. In this study, we report the case of a 66-year-old man who experienced 3 stroke episodes over a 4-year period, starting at the age of 62 years. The patient presented with isolated infarcts in the left temporal pole with progressive stenosis in the ipsilateral middle cerebral artery based on large and small artery crosstalk.

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Patient: A 67-year-old woman presented to our clinic with chief complaints of headache and mandibular heaviness. Physical examination revealed bilateral tenderness in the temporalis and masseter muscles, corresponding to the patient's chief complaint. Thus, a diagnosis of temporomandibular disorders (TMDs)-related headache was made.

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  • The study evaluated the effectiveness of definitive chemoradiotherapy (dCRT) as a method to preserve organs in patients with esophageal squamous cell carcinoma (ESCC) who showed a significant response to induction chemotherapy.
  • Eligible patients received 3 cycles of a chemotherapy regimen followed by dCRT if they were downstaged to stage IA, with the main goal of achieving high 1-year progression-free survival rates.
  • Results showed that 58.4% of patients had a remarkable response, with 89.8% achieving complete response after dCRT; the study reported a 1-year progression-free survival of 89.8% and a 3-year overall survival of 83.7% during follow-up.
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Glycerophospholipids have hydrophobic and hydrophilic moieties. Previous studies suggest that phospholipids with different moieties have different effects on rodent behavior; however, the relationship between chemical structures and behavioral effects remains unclear. To clarify the functions of phospholipid moieties, we injected male rats with phospholipids with different moieties and conducted behavioral tests.

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Objectives: Intracerebral hemorrhage (ICH) and cerebral microbleeds (CMB) in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy are more common in East Asian populations than in people of white European ancestry. We hypothesized that the ethnic difference is explained by the East Asian-specific NOTCH3 p.R75P mutation.

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Background: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), the most common form of hereditary cerebral small vessel disease (SVD), currently lacks disease-modifying treatments. Adrenomedullin (AM), a vasoactive peptide with angiogenic, vasodilatory, anti-inflammatory, and anti-oxidative properties, shows potential effects on the neuro-glial-vascular unit.

Objective: The AdrenoMedullin for CADASIL (AMCAD) study aims to assess the efficacy and safety of AM in patients with CADASIL.

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  • The study explores the potential link between high-pillow usage and spontaneous vertebral artery dissection (sVAD), aiming to assess whether using taller pillows increases the risk of developing this condition.
  • Researchers compared 53 patients with sVAD to 53 age- and sex-matched controls, finding that high-pillow usage was significantly more common in patients with sVAD (34% vs 15% for pillows 12–15 cm high).
  • The findings suggest that about 10% of sVAD cases may be linked to high-pillow use, indicating that it could represent a specific condition referred to as "Shogun pillow syndrome."
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Unlabelled: Cardioembolism associated with atrial fibrillation is a major cause of ischemic stroke. Left atrial appendage occlusion in atrial fibrillation patients undergoing cardiac surgery reduces the risk of postoperative stroke. A 78-year-old man with a history of atrial fibrillation and severe mitral regurgitation underwent thoracoscopic mitral valve repair with left atrial appendage clipping and the cryo-maze procedure 4 years previously.

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Background: Anemia can occur due to an aspiration maneuver of blood with thrombi during mechanical thrombectomy (MT) for stroke. However, the association between postoperative anemia and stroke outcomes is unknown.

Methods: In a registry-based hospital cohort, consecutive patients with acute ischemic stroke who underwent MT were retrospectively recruited.

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  • RNF213 is linked to moyamoya disease and vasospastic angina, requiring a second hit like elevated thyroid peroxidase antibody (TPO-Ab) levels for the development of these conditions.
  • A study analyzed 2,090 patients with ischemic stroke (IS) or transient ischemic attack (TIA), finding that 4.1% carried the RNF213 p. R4810K variant and had significantly higher TPO-Ab levels compared to non-carriers.
  • The results suggest that elevated TPO-Ab levels are associated with the RNF213 p. R4810K variant, potentially influencing the likelihood of developing IS/TIA in these patients.
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  • Surgery is the standard treatment for stage I non-small cell lung cancer (NSCLC), but there's limited evidence on whether it's better than stereotactic body radiotherapy (SBRT) for survival.
  • A study analyzed data from 399 operable stage I NSCLC patients in Japan to assess the real-world outcomes of SBRT, noting a median follow-up of 38 months and various survival rates based on cancer subtype and patient characteristics.
  • Results showed an overall 3-year survival rate of 77%, with female patients doing better than males, highlighting SBRT's potential as a viable treatment option for older patients with stage I NSCLC and guiding shared decision-making in their care.
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Objective: Postseizure functional decline is a concern in poststroke epilepsy (PSE). However, data on electroencephalogram (EEG) markers associated with functional decline are scarce. Thus, we investigated whether periodic discharges (PDs) and their specific characteristics are associated with functional decline in patients with PSE.

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Left main coronary artery ostial atresia (LMCAOA) is an extremely rare condition. Here, we report the case of a 14-year-old boy with Noonan syndrome-like disorder in whom LMCAOA was detected following cardiopulmonary arrest. The patient had been diagnosed with Noonan syndrome-like disorder with a pathogenic splice site variant of CBL c.

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  • This study aimed to identify the most effective Tmax mismatch ratio for predicting large-vessel occlusion (LVO) caused by anterior intracranial atherosclerotic stenosis (ICAS) before endovascular treatment.
  • Researchers analyzed data from 213 ischemic stroke patients and found that a Tmax mismatch ratio of >10 s/>6 s was the best predictor for ICAS-related LVO.
  • The findings suggest that using this specific Tmax profile can enhance decision-making for endovascular therapy in patients suspected of having ICAS-related LVO.
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The indications for stereotactic body radiotherapy (SBRT) for prostate cancer have increased. However, the relationships between adverse events and risk factors remain unclear. This study aimed to clarify associations between adverse events and dose index for prostate SBRT.

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The new isotope ^{241}U was synthesized and systematic atomic mass measurements of nineteen neutron-rich Pa-Pu isotopes were performed in the multinucleon transfer reactions of the ^{238}U+^{198}Pt system at the KISS facility. The present experimental results demonstrate the crucial role of the multinucleon transfer reactions for accessing unexplored neutron-rich actinide isotopes toward the N=152 shell gap in this region of nuclides.

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