Publications by authors named "Ishikawa O"

Objectives: Systemic sclerosis is characterised by ischaemic skin ulcers on the fingertips, and low-energy shock wave therapy is suggested as a novel treatment for ischaemic lesions with angiogenic effects. We aimed to investigate the efficacy and safety of shock wave therapy for skin ulcers in patients with systemic sclerosis.

Methods: In this phase 3 pivotal study, we analysed 60 systemic sclerosis patients with digital ulcers that did not disappear after >4 weeks of existing treatment: 30 patients were treated with extracorporeal shock wave therapy and 30 with conventional treatment.

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Cultivated rice (Oryza sativa) produces a variety of diterpenoid-type phytoalexins. Diterpene synthase genes that are responsible for the biosynthesis of momilactones, phytocassanes, and oryzalexins have been identified in O. sativa cv.

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Objective: To examine disease and target engagement biomarkers in the RISE-SSc trial of riociguat in early diffuse cutaneous systemic sclerosis and their potential to predict the response to treatment.

Methods: Patients were randomized to riociguat (n = 60) or placebo (n = 61) for 52 weeks. Skin biopsies and plasma/serum samples were obtained at baseline and week 14.

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Here we report the largest Asian genome-wide association study (GWAS) for systemic sclerosis performed to date, based on data from Japanese subjects and comprising of 1428 cases and 112,599 controls. The lead SNP is in the FCGR/FCRL region, which shows a penetrating association in the Asian population, while a complete linkage disequilibrium SNP, rs10917688, is found in a cis-regulatory element for IRF8. IRF8 is also a significant locus in European GWAS for systemic sclerosis, but rs10917688 only shows an association in the presence of the risk allele of IRF8 in the Japanese population.

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Article Synopsis
  • - The RISE-SSc trial studied the safety and effectiveness of riociguat for treating early diffuse cutaneous systemic sclerosis, comparing it to a placebo and then evaluating long-term effects for an additional year.
  • - Out of 121 patients in the main study, 87 (72%) enrolled in the long-term extension, with a majority being women and White, which led to the observation that 94% experienced mild to moderate adverse events, but no new serious complications emerged.
  • - The study concluded that riociguat remained safe over the long term, although it lacked a comparator group in its open-label phase, which is a noted limitation.
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Background: Recurrent cerebral aneurysms have complex shapes and are often technically challenging to treat with a single microcatheter. This study evaluates the clinical characteristics and treatment outcomes of patients who received double-catheter coil embolization for recurrent cerebral aneurysms.

Methods: Patients who underwent double-catheter coil embolization at our institution between April 2011 and March 2022 for recurrent aneurysms were included in the study.

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Objective: There are insufficient coherent reports on mechanical thrombectomy (MT) for occlusion of the second segment of the middle cerebral artery (M2 occlusion) in a real-world clinical setting. We evaluated the efficacy and safety of MT for M2 occlusions and compared the primary thrombectomy strategies (stent retriever, aspiration catheter, and combined technique) to analyze factors predicting good functional outcomes.

Methods: We evaluated background factors, preprocedural factors, procedural factors, and procedural time for patients who underwent MT for M2 occlusions from our retrospective cohort.

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Objective: To investigate the long-term dynamics of recurrence risk and the significance of prognostic variables using conditional recurrence-free survival (C-RFS) analysis in neoadjuvant treatment (NAT) for resectable (R) and borderline resectable (BR) pancreatic cancer (PC).

Background: C-RFS analysis assesses the probability of achieving additional RFS according to the RFS already accrued.

Methods: Patients with NAT and subsequent resection for R/BRPC were enrolled.

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Background: Duke pancreatic mono-clonal antigen type 2 (DUPAN-II) is a famous tumour maker for pancreatic cancer (PC) as well as carbohydrate antigen 19-9 (CA19-9). We evaluated the clinical implications of DUPAN-II levels as a biological indicator for PC during preoperative chemoradiation therapy (CRT).

Methods: This retrospective analysis included data from 221 consecutive patients with resectable and borderline resectable PC at diagnosis who underwent preoperative CRT between 2008 and 2017.

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Objective: In the multimodality treatment of complex brain arteriovenous malformations (AVMs), the role of endovascular embolization is not fully elucidated. To assess the risk of embolization, we retrospectively evaluated the outcomes of endovascular treatment for AVM, focusing on the embolization-related complications.

Methods: The present study included patients with brain AVM who underwent embolization at our hospital between April 2011 and May 2021.

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Article Synopsis
  • * A 71-year-old man with BR-PC underwent neoadjuvant chemoradiation therapy, which reduced his tumor size and enabled successful surgery.
  • * The patient achieved a pathological complete response after surgery and remains cancer-free two years later, suggesting neoadjuvant chemoradiation therapy may improve outcomes for BR-PC.
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Pregnancy-associated cervicocephalic arterial dissection is rare, and its pathophysiology remains poorly understood. Despite the hypothesized contribution to pathogenesis, connective tissue diseases and genetic factors are rarely identified in clinical cases. We describe a case of postpartum arterial dissection involving all four cervicocephalic arteries resulting in acute cerebral infarction.

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Background: Hypoglossal nerve stimulator (HGNS) is a therapeutic option for moderate to severe obstructive sleep apnea (OSA). Improved patient selection criteria are needed to target those most likely to benefit. We hypothesized that the pattern of negative effort dependence (NED) on inspiratory flow limited waveforms recorded during sleep, which has been correlated with the site of upper airway collapse, would contribute to the prediction of HGNS outcome.

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Type I interferon (IFN) plays a crucial role in innate and adaptive immunity, and aberrant IFN responses are involved in systemic autoimmune diseases, such as systemic lupus erythematosus (SLE) and dermatomyositis (DM). Type I IFNs can be induced by transcribed retrotransposons. The regulation of retrotransposons and type I IFN and the downstream IFN pathways in SLE, DM, and autoimmune blistering disease (AIBD) were investigated.

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A 37-year-old Japanese man with a 3-year history of diffuse cutaneous systemic sclerosis was admitted to our hospital with high fever, arthralgia, myalgia, and muscle weakness. A physical examination revealed facial erythema, Gottron's sign, and mechanic's hands in addition to skin sclerosis. Laboratory data revealed significantly elevated levels of creatine kinase and decreased complement.

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Background: SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) continues to be a global challenge due to the lack of definitive treatment strategies. We sought to determine the efficacy of early administration of anti-interleukin 6 therapy in reducing hospital mortality and progression to mechanical ventilation.

Methods: This was a retrospective chart review of 11,512 patients infected with SARS-CoV-2 who were admitted to a New York health system from March to May 2020.

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Article Synopsis
  • Developmental venous anomalies (DVAs) are usually harmless but can cause symptoms, particularly when associated with a capillary stain on imaging, which may indicate venous congestion.* -
  • A 20-year-old man experienced an epileptic seizure, and MRI revealed significant brain swelling and venous congestion related to a DVA identified via digital subtraction angiography.* -
  • The case highlights the unique progression of DVAs with capillary stains, demonstrating that these anomalies can lead to temporary symptoms and suggesting that regular follow-up imaging is important for monitoring.*
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Introduction: In COVID-19 associated hypoxemic acute respiratory failure (ARF) without mandatory indication for urgent endotracheal intubation, a trial of CPAP may be considered. We aimed to evaluate HACOR (heart rate, acidosis, consciousness, oxygenation, respiratory rate) score performance in these patients as predictor of CPAP failure.

Methods: Prospective observational multicentric study (three centers in different countries), including adult patients with SARS-CoV-2 pneumonia admitted to a respiratory intermediate care unit, presenting PaO/FiO < 300 and PaCO < 45 mmHg, who received CPAP.

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Background: Increasing restrictions over trainees' working hours and the recent coronavirus disease 2019 pandemic warrant new educational methods of surgical skills. We assessed a novel video-recording system for neuroendovascular skill education, developed with the installation of a hybrid operating room (OR) at our institution.

Methods: A single-plane angiography unit with a large flat display (FlexVision XL; Philips Medical Systems) was installed in our OR.

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Central Sleep Apnea.

Clin Geriatr Med

August 2021

Central sleep apnea (CSA) is characterized by intermittent repetitive cessation and/or decreased breathing without effort caused by an abnormal ventilatory drive. Although less prevalent than obstructive sleep apnea, it is frequently encountered. CSA can be primary (idiopathic) or secondary in association with Cheyne-Stokes respiration, drug-induced, medical conditions such as chronic renal failure, or high-altitude periodic breathing.

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