Publications by authors named "Ishigami N"

A zone 0 landing thoracic endovascular aortic repair was performed on a 69-year-old man with a saccular aortic arch aneurysm. Seven days after the surgery, the patient experienced diminished consciousness and lower limb paralysis. Stent graft collapse was seen on a computed tomography scan.

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Objectives: Sternal retractors utilized during open-heart surgeries through median sternotomy can cause upper rib fractures which sometimes further leads to brachial plexus injury. We aimed to investigate the incidence of brachial plexus injury and upper rib fractures in open-heart surgeries and how these injuries are associated with each other.

Methods: We investigated 1050 cases during the past five years.

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Article Synopsis
  • The study discusses a successful endovascular therapy using a small-diameter stent graft in a 73-year-old man with an asymptomatic pseudoaneurysm of the brachiocephalic artery.
  • The procedure involved placing an 8F sheath in the brachial artery and advancing a guidewire to the descending aorta to deliver the stent graft.
  • Final imaging showed no complications, suggesting that this minimally invasive method could be beneficial in clinical settings for treating this type of pseudoaneurysm.
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Background: Various face-to-face training opportunities have been lost due to the COVID-19 pandemic. Instructor development workshops for advanced resuscitation (ie, advanced life support) training courses are no exception. Virtual reality (VR) is an attractive strategy for remote training.

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Aim: The Japan Prehospital Trauma Evaluation and Care (JPTEC) is a standardized educational program for prehospital trauma care in Japan. The initial assessment in the JPTEC course comprises a training segment that includes a 30-min session. Given the limited face-to-face training due to the coronavirus disease 2019, virtual reality (VR) content has become an alternative.

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Superoxide dismutase (SOD) is an enzyme that catalyzes the dismutation of two superoxide anions (O) into hydrogen peroxide (HO) and oxygen (O) and is generally known to protect against oxidative stress. Angiotensin II (AngII) causes vascular hypertrophic remodeling which is associated with HO generation. The aim of this study is to investigate the role of cytosolic SOD (SOD1) in AngII-induced vascular hypertrophy.

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Bifidobacteria are one of the major components in human gut microbiota and well-known as beneficial microbes. However, clarification of commensal mechanisms of bifidobacteria in the intestines is still ongoing, especially in the presence of the gut microbiota. Here, we applied recombinase-based in vivo expression technology (R-IVET) using the bacteriophage P1 Cre/ system to subsp.

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Article Synopsis
  • Acute kidney injury (AKI) can lead to end-stage kidney disease (ESKD) as a complication of aortic dissection, but typically involves evidence of renal artery obstruction, which was not present in this case.
  • A 58-year-old man with a Stanford type B aortic dissection experienced unexpected progression from AKI to ESKD despite no imaging findings of renal artery involvement.
  • After surgical intervention to address peripheral malperfusion, the patient's kidney function normalized, marking the first documented case of AKI from aortic dissection without direct renal artery blockage recovering post-surgery.
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Purpose: Renin-angiotensin system (RAS) inhibitors carry a risk of normotensive ischemic acute kidney injury in dehydration and concurrent nonsteroidal anti-inflammatory drug (NSAID) use. Although the estimated number of patients with chronic kidney disease (CKD) is 20 000, Fujieda, Japan, has only three nephrologists. On 25 March 2016, we reorganized the CKD network to include pharmacists and distributed a CKD manual.

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Mediastinitis occurs after open heart surgery in a small number of cases. When it occurs, early diagnosis and treatment are important. A 69-year-old male patient suffered from mediastinitis after total aortic arch replacement.

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Article Synopsis
  • A 25-year-old healthy man experienced a sudden loss of consciousness and a seizure while standing, leading to his hospitalization.
  • Tests showed he had cardiac asystole but no structural heart issues, and his heart's electrical functions were normal.
  • Notably, brain scans revealed an enlarged left amygdala and the case is identified as a unique instance of temporal lobe epilepsy linked to cardiac asystole.
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Symptomatic caval perforation is rare complication after inferior vena cava (IVC) filter insertion. A 44-year-old woman developed back pain after the placement of retrieval IVC filter during catheter-directed thrombolysis (CDT). Her computed tomography showed a large right-sided retroperitoneal hematoma.

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This report describes 2 cases of spontaneous intratubular spermatocytic seminomas in Sprague-Dawley rats. These rats were sacrificed at 10 weeks old (case 1) and 40 weeks old (case 2), respectively. Macroscopically, there were no remarkable changes in either case.

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Sudden cardiac death (SCD) in athletes <35 years of age are mostly due to congenital or acquired cardiac malformations or hypertrophic cardiomyopathy. However, ion channelopathies such as catecholaminergic polymorphic ventricular tachycardia (CPVT) or long-QT syndromes, which are less frequently observed, are also potential pathogenesis of SCD in young athletes. CPVT is an inherited arrhythmia that is induced by physical or emotional stress and may lead to ventricular fibrillation syncope or SCD.

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Recent studies have shown that cerebrospinal fluid (CSF) levels of α-synuclein (α-syn) are highly elevated in patients with Creutzfeldt-Jakob disease (CJD) compared to controls. However, the diagnostic value of CSF α-syn in CJD has not been established. To confirm whether CSF α-syn is increased in CJD and is a useful marker for this disease, two independent enzyme-linked immunoabsorbent assays (ELISAs) specific for α-syn were used: ELISA 211-FL140, which is specific for full-length α-syn, and ELISA N19-FL140, which is specific for the full-length and associated C-terminal truncated forms of α-syn.

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The differential diagnosis of Parkinson's disease and multiple system atrophy can be challenging, especially in the early stages of the diseases. We developed a proteomic profiling strategy for parkinsonian diseases using mass spectrometry analysis for magnetic-bead-based enrichment of cerebrospinal fluid peptides/proteins and subsequent multivariate statistical analysis. Cerebrospinal fluid was obtained from 37 patients diagnosed with Parkinson's disease, 32 patients diagnosed with multiple system atrophy, and 26 patients diagnosed with other neurological diseases as controls.

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The present case is 74 years old man who was hospitalized to treat lung tumor suspected of malignancy. Because the superior vena cava thrombus was also revealed by radiological examination, he was performed lobectomy and thrombectomy at the same time. He has past history of intravenous hyperalimentation for 15 days, and we supposed the event to be the cause of the thrombus.

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Aim: Tumor necrosis factor receptor 1 (TNFR1) participates importantly in arterial inflammation in genetically altered mice; however it remains undetermined whether a selective TNFR1 antagonist inhibits arterial inflammation and intimal hyperplasia. This study aimed to determine the effect and mechanism of a novel TNFR1 antagonist in the suppression of arterial inflammation.

Methods: We investigated intimal hyperplasia in IL-1 receptor antagonist-deficient mice two weeks after inducing femoral artery injury in an external vascular cuff model.

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Aims: IκBNS regulates a subset of Toll-like receptor (TLR)-dependent genes including interleukin-6 (IL-6) by inhibiting nuclear factor-κB (NF-κB). IL-6 is an inflammatory biomarker for cardiovascular diseases. The aim of this study was to determine whether IκBNS changes arterial inflammation and intimal hyperplasia after vascular injury.

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Aim: The anti-oxidant enzyme copper/zinc superoxide dismutase (CuZnSOD) metabolizes superoxide anion (O(2)(-)) in vascular cells. However, the role of CuZnSOD in vascular injury remains poorly understood.

Methods: Using CuZnSOD-deficient (CuZnSOD(-/-)) mice and wild-type (WT) mice, we investigated morphometric changes and the role of O(2)(-) in vascular remodeling after femoral artery injury induced by an external vascular cuff model.

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The aquaporin-4 (AQP4) water channel antibody is used in the diagnosis of neuromyelitis optica (NMO) due to its high sensitivity and high specificity. However, some patients are reported to have neither optic neuritis nor myelitis despite being positive for the AQP4-autoantibody (AQP4-Ab). Therefore, recent reports suggest that such patients should be diagnosed as having 'AQP4-autoimmune syndrome'.

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Background: To date, there is no accepted clinical diagnostic test for Parkinson disease (PD) that is based on biochemical analysis of blood or CSF. The discovery of mutations in the SNCA gene encoding α-synuclein in familial parkinsonism and the accumulation of α-synuclein in the PD brain suggested a critical role for this protein in PD etiology.

Methods: We investigated total and α-synuclein oligomers levels in CSF from patients clinically diagnosed with PD, progressive supranuclear palsy (PSP), or Alzheimer disease (AD), and age-matched controls, using ELISA developed in our laboratory.

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There is accumulating evidence that soluble amyloid-beta (Abeta) oligomers, rather than amyloid fibrils, are the principal pathogenic species in Alzheimer disease (AD). Here, we have developed a novel enzyme-linked immunosorbent assay (ELISA) specific for high-molecular-weight (HMW) Abeta oligomers. Analysis of Abeta oligomers derived from synthetic Abeta 1-42, by size-exclusion chromatography (SEC), revealed that our ELISA specifically detected HMW Abeta oligomers of 40-200 kDa.

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A 64-year-old woman was admitted to our hospital for recurrent stroke and cognitive impairment and was diagnosed with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Iodine-123 iodoamphetamine single photon emission computed tomography showed hypoperfusion in the whole brain, but cerebral blood flow increased dramatically after the administration of acetazolamide in the cerebral cortex. Lomerizine, a diphenylmethylpiperazine Ca2+ channel blocker, can selectively increase cerebral blood flow.

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