Publications by authors named "Kurimoto Y"

We report on a successful thoracic endovascular aortic repair for perigraft seroma (PGS) after ascending aorta replacement (AAR). An 82-year-old man underwent AAR. Two years after the operation, computed tomography showed a 75-mm PGS around the ascending aorta.

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Macular hole (MH) is a retinal break involving the fovea that causes impaired vision. Although advances in vitreoretinal surgical techniques achieve >90% MH closure rate, refractory cases still exist. For such cases, autologous retinal transplantation is an optional therapy showing good anatomic success, but visual improvement is limited and peripheral visual field defects are inevitable after graft harvesting.

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Background Aortic valve (AV) repair is a challenging procedure due to its complexity, lower reproducibility, and steep learning curve. To examine its durability and validity, we investigated mid-term outcomes following AV repair without aortic root replacement. Methods Between March 2007 and May 2018, we retrospectively identified 14 patients who underwent AV repair without aortic root replacement at our institution.

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  • The study investigates the effectiveness of retinal pigment epithelium replacement therapy for patients with Bietti crystalline dystrophy (BCD) by examining the relationship between fundus autofluorescence abnormalities and visual field defects.
  • It includes data from 16 BCD patients and 16 patients with RHO-associated retinitis pigmentosa, analyzing their fundus autofluorescence and visual field test results.
  • Findings reveal that in BCD patients, the area of FAF abnormalities does not correlate with visual field loss, highlighting the potential for therapy to help preserve remaining vision, unlike in RHO-associated cases where correlations were stronger.
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  • Retinitis pigmentosa (RP) is a common inherited eye disease that leads to blindness, caused by various gene variants, making genetic diagnosis crucial for treatment and prognosis.
  • This study focused on using multiplex ligation-dependent probe amplification (MLPA) to identify copy number variations (CNVs) in the EYS gene connected to RP, particularly since next-generation sequencing (NGS) has limitations in detecting CNVs.
  • Results confirmed CNVs in eight patients initially identified through NGS, and found additional CNVs in 2 out of 42 undiagnosed patients, highlighting that NGS can be effective for CNV detection in RP cases despite some limitations.
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Memory T cells demonstrate superior in vivo persistence and antitumor efficacy. However, methods for manufacturing less differentiated T cells are not yet well-established. Here, we show that producing chimeric antigen receptor (CAR)-T cells using berbamine (BBM), a natural compound found in the Chinese herbal medicine Berberis amurensis, enhances the antitumor efficacy of CAR-T cells.

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  • Cardiac metastasis from renal cell carcinoma is uncommon, and there's no standard treatment strategy established for it.
  • A 61-year-old man underwent successful removal of a recurrent cardiac tumor due to renal cancer after initial molecular therapy, but had to have surgery again due to recurrence in the right ventricle.
  • The second surgery was successful, leading to no cardiac recurrence after two years, highlighting the potential effectiveness of surgical intervention in such cases.
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  • A global study has investigated the use of human pluripotent stem cell-derived retinal pigment epithelial cells (hiPSC-RPE) for treating diseases like age-related macular degeneration, highlighting the pros and cons of cell suspensions and sheets.
  • The hiPSC-RPE strips were created to offer a less invasive method for cell delivery, demonstrating stable survival in a cynomolgus monkey model after transplantation into both damaged and healthy retinal areas.
  • The transplanted RPE cells not only expanded more at the injury site without causing tumors but also exhibited important cellular characteristics for effective retinal therapy.
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Purpose: Recent reports of the Zenith Alpha abdominal endovascular graft (Zenith Alpha AAA, Cook, Inc., Bloomington, Indiana) have demonstrated an unexpectedly high incidence of limb graft occlusion (LGO). The purpose of this study was to prospectively evaluate the performance of the Zenith AAA in Japan, with a specific focus on LGO.

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This study aimed to investigate how the extent and central/peripheral location of the residual visual field (VF) in patients with late-stage inherited retinal diseases (IRDs) are related to retinal sensitivity detected using full-field stimulus testing (FST). We reviewed the results of Goldmann perimetry and FST from the medical records of patients with IRDs whose VF represents central (within 10°) and/or peripheral islands, or undetectable. In total, 19 patients (19 eyes) were analyzed in this study.

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Purpose: To evaluate midterm results of whether the strategy to occlude target lumbar arteries using n-butyl-2-cyanoacrylate (nBCA) injection during endovascular aneurysm repair (EVAR) reduced the incidence of Type II endoleak (T2EL) after EVAR.

Materials And Methods: Between 2013 and 2020, 187 patients underwent EVAR; 106 in the treatment group received nBCA injection during EVAR, whereas 81 in the historical control group did not. The incidence of T2EL at 7 days, need for reintervention, and post-EVAR aneurysmal shrinkage were compared between the groups.

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We investigated the potential of ChatGPT in the ophthalmological field in the Japanese language using board examinations for specialists in the Japanese Ophthalmology Society. We tested GPT-3.5 and GPT-4-based ChatGPT on five sets of past board examination problems in July 2023.

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Objective: Cystoid macular edema (CME) in retinitis pigmentosa (RP) is an important complication causing visual dysfunction. We investigated the effect of CME on photoreceptors in RP patients with previous or current CME, using an adaptive optics (AO) fundus camera.

Methods: We retrospectively observed the CME and ellipsoid zone (EZ) length (average of horizontal and vertical sections) by optical coherence tomography.

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Article Synopsis
  • The study explores the transplantation of retinal organoid sheets derived from induced pluripotent stem cells (iPSCs) into patients with advanced retinitis pigmentosa, assessing both safety and survival of the transplant.
  • Results showed that the retinal organoid sheets remained stable for 2 years post-transplant and led to increased retinal thickness without serious side effects in both patients.
  • Visual function improvement was noted to be less progressive in the treated eyes compared to untreated ones, indicating that iPSC-derived retinal organoid sheet transplantation may be a promising treatment for retinal diseases that requires further investigation.
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Purpose: Novel therapeutic options, such as regenerative medicine and gene therapy, are now emerging as viable treatment options for patients with severe visual impairments, such as retinitis pigmentosa (RP). Gradable assessment of patients' visual function is essential to consider treatment options and to evaluate treatment outcomes; however, evaluation of visual function in patients with advanced low vision is often challenging because of patients' poor and sometimes unpredictable responses. In this study, we attempted to accurately assess visual capabilities and disease stage in patients with RP with a visual acuity (VA) of ≤ 0.

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Objective: The aim of this study was to evaluate midterm outcomes of our novel strategy of postoperative initial 2-day blood pressure management (BPM) after endovascular aneurysm repair (EVAR) for the prevention of subsequent type II endoleak (T2EL) in a single-center series.

Methods: Between 2008 and 2014, 137 patients who underwent EVAR for abdominal aortic aneurysm (AAA) were reviewed. Starting from 2013, the mean blood pressure was maintained between 75 and 90 mmHg for the initial 24 hours after EVAR followed by systolic pressure controlled below 120 mmHg during the next 24 hours in the treatment group (n = 76).

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Purpose: To describe a novel case of bilateral rapidly progressive retinopathy after immunotherapy with pembrolizumab for metastatic urothelial carcinoma.

Methods: Case report.

Results: A 64-year-old man undergoing pembrolizumab immunotherapy was referred to our hospital because of bilateral acute vision loss.

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Background: This study aimed to evaluate the midterm results of zone 2 thoracic endovascular aortic repair (TEVAR) for uncomplicated type B aortic dissection (TBAD) by measuring the intra-false lumen pressure (IFLP) during TEVAR.

Methods: Fifteen patients (9 men; mean age, 57 years) who underwent zone 2 TEVAR for uncomplicated TBAD were reviewed. Delta systolic pressure (defined as the difference between systemic pressure and IFLP) was measured before and after primary entry closure, and aortic remodeling and thrombo-occlusion of the false lumen (FL) were evaluated 12 months after TEVAR at 5 different levels of the aorta.

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Electrochemical dehydrogenative C-O bond formation for the synthesis of sultones was achieved. In the presence of KCO and HO, constant current electrolysis of [1,1'-biphenyl]-2-sulfonyl chloride afforded an aryl-fused sultone quantitatively. Under the optimized conditions, a variety of sultone derivatives were obtained.

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The stereochemistry of pericyclic reactions is explained by orbital symmetry conservation, referred to as the Woodward-Hoffmann (WH) rule. Although this rule has been verified using the structures of reactants and products, the temporal evolution of the orbital symmetry during the reaction has not been clarified. Herein, we used femtosecond soft X-ray transient absorption spectroscopy to elucidate the thermal pericyclic reaction of 1,3-cyclohexadiene (CHD) molecules, , their isomerization to 1,3,5-hexatriene.

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Purpose: To identify the genotypic and phenotypic characteristics of rhodopsin (RHO)-associated retinitis pigmentosa (RP) in the Japanese population.

Study Design: Cross-sectional, single-center study METHODS: The medical records of 1336 patients with RP who underwent genetic testing at our clinic between November 2008 and September 2021 were reviewed, and patients with RHO variants were included. The patients were divided into class A and class B to assess genotype-phenotype correlations based on previous reports.

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Purpose: To investigate the long-term outcomes of cataract surgery for glaucoma management in patients with primary angle-closure disease (PACD).

Study Design: Retrospective case series.

Methods: We reviewed the medical records of 87 eyes of 87 patients with PACD who underwent uncomplicated cataract surgery alone at the Kobe City Medical Center General Hospital.

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Transplantation of embryonic/induced pluripotent stem cell-derived retina (ESC/iPSC-retina) restores host retinal ganglion cell light responses in end-stage retinal degeneration models with host-graft synapse formation. We studied the immunological features of iPSC-retina transplantation using major histocompatibility complex (MHC)-homozygote monkey iPSC-retinas in monkeys with laser-induced retinal degeneration in MHC-matched and -mismatched transplantation. MHC-mismatched transplantation without immune suppression showed no evident clinical signs of rejection and histologically showed graft maturation without lymphocytic infiltration, although immunological tests using peripheral blood monocytes suggested subclinical rejection in three of four MHC-mismatched monkeys.

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  • Researchers found that NGC7 can also generate ccMA from lignin-derived aromatic compounds that lack syringyl nucleus components.
  • They engineered NGC7 by adding specific genes to boost its ability to produce ccMA from a mixture of lignin-derived aromatics, achieving successful production from sugar cane bagasse alkaline extract.
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