Publications by authors named "Masayuki Hata"

Age-related macular degeneration (AMD) is one of the most common neuroinflammatory diseases that is the leading cause of blindness worldwide. AMD is caused by not only mutations in immune-related genes such as Cfh (complement factor H) but also the accumulation of environmental factors such as obesity and other inflammatory triggers with age. Our study found that the past histories of obesity can lead to immunological reprogramming in the innate immune system and affect the development of AMD in later life.

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Tissue inflammation is often broadly associated with cellular damage, yet sterile inflammation also plays critical roles in beneficial tissue remodeling. In the central nervous system, this is observed through a predominantly innate immune response in retinal vascular diseases such as age-related macular degeneration, diabetic retinopathy, and retinopathy of prematurity. Here, we set out to elucidate the dynamics of the immune response during progression and regression of pathological neovascularization in retinopathy.

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Article Synopsis
  • * The study emphasizes the importance of using multiple imaging techniques, such as fluorescein angiography and OCT, to diagnose this complex condition effectively.
  • * Findings from this case enhance our understanding of the eye-related features of Wyburn-Mason syndrome and stress the need for thorough diagnostic methods.
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  • - The study evaluated cellular changes in the foveal neuroglia of eyes with idiopathic epiretinal membrane (ERM) and their relationship with visual function post-vitrectomy, using adaptive optics OCT (AO-OCT) for analysis.
  • - The research involved 84 subjects, comparing 50 eyes with ERM to 34 healthy control eyes, and analyzed various visual parameters before and after surgical intervention.
  • - Key findings indicated that eyes with ERM displayed distinct alterations in foveal microstructures, including thicker ellipsoid zones and altered Müller cell alignment, both of which correlated with decreased visual function indicators.
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Purpose: To report a rare case of optic disc and chorioretinal vascular occlusions in the right eye following sub-Tenon injection of triamcinolone acetonide (STTA) in an older male patient with scleritis and to discuss the associated risk factors and potential alternative therapies.

Methods: The medical history and clinical examination, including fundoscopy, fluorescein angiography (FA), and indocyanine green angiography (ICGA), were conducted to diagnose and evaluate the extent of vascular occlusion after STTA. An extensive literature review was undertaken to ascertain the associated risks and consider other treatment options for scleritis.

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Article Synopsis
  • * The results showed that while patients with non-PM had better vision at 1 and 2 years compared to those with PM, by the 3rd and 4th years, their visual acuity (BCVA) was about the same for both groups.
  • * However, patients with non-PM required significantly more injections over the 4-year period than those with PM, indicating they need closer monitoring and
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Purpose: This case report details the diagnostic process for a patient with an initial diagnosis of scleritis who was unresponsive to typical treatment modalities, culminating in the identification of a cavernous sinus dural arteriovenous fistula (CS-DAVF). The case highlights the role of anterior segment optical coherence tomography angiography (OCTA) in the diagnosis of this vascular anomaly and in monitoring the response to treatment.

Observations: A 45-year-old man with persistently elevated intraocular pressure (IOP) and ocular congestion in the left eye was unresponsive to treatment for scleritis.

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Article Synopsis
  • A 27-year-old man experienced visual issues after using a laser device, and his condition was challenging to diagnose with regular imaging techniques.
  • Conventional SD-OCT showed some abnormalities, but adaptive optics-OCT provided clearer details, revealing significant damage to retinal structures.
  • This case emphasizes the need for greater awareness among laser users about potential eye risks and highlights the importance of advanced diagnostic tools for ophthalmologists.
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Purpose: To evaluate the efficacy and safety of faricimab injections for treatment-naïve neovascular age-related macular degeneration (nvAMD) patients, including subtypes and pachychoroid phenotypes, and identify predictive factors for visual outcomes.

Methods: nvAMD patients were prospectively recruited, receiving three monthly faricimab (6 mg) injections. Best-corrected visual acuity (BCVA) two months after the last injection (month 4) was compared between subtypes, and between pachychoroid neovasculopathy (PNV) and non-PNV eyes.

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Compromised vascular endothelial barrier function is a salient feature of diabetic complications such as sight-threatening diabetic macular edema (DME). Current standards of care for DME manage aspects of the disease, but require frequent intravitreal administration and are poorly effective in large subsets of patients. Here we provide evidence that an elevated burden of senescent cells in the retina triggers cardinal features of DME pathology and conduct an initial test of senolytic therapy in patients with DME.

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Purpose: To examine the associations between the vortex vein characteristics and locations of the pigment epithelial detachment (PED) and leak point in patients with central serous chorioretinopathy (CSC).

Design: Observational case series.

Methods: We evaluated 116 eyes of 104 patients with CSC.

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This study aimed to analyze the trends and factors influencing the number of ophthalmic surgeries in Japan using the open data from the National Database of Health Insurance Claims and Specific Health Checkups of Japan published by the Ministry of Health, Labour and Welfare. We calculated the number of cataract, glaucoma, and vitreoretinal surgeries, categorized by sex, age, and surgical type, for the fiscal years (FY) 2014 to 2020. The number of cataract surgeries remained stable at approximately 1.

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Article Synopsis
  • Virtual screening using high-performance computing is an efficient method for discovering new drugs by searching chemical databases for compounds that bind well to target proteins, especially for COVID-19 treatment.
  • SARS-CoV-2 has two proteases, and while drugs exist for one (3CL), there are no approved treatments for the other (PL), prompting researchers to look for potential inhibitors.
  • The study involved screening over 8,800 compounds through simulations and calculations, leading to the identification of five promising inhibitors after in vitro testing, showcasing the effectiveness of combining computational methods for drug discovery.
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Though vascular endothelial growth factors (VEGF) and other proangiogenic factors, such as angiopoietins (Ang), may be involved in the development of neovascular age-related macular degeneration (nvAMD), only drugs that inhibit the VEGF family are available for the treatment. The newly approved anti-VEGF drug faricimab, which also inhibits Ang-2, is expected to be effective in patients with AMD refractory to conventional anti-VEGF drugs. Therefore, we prospectively investigated the efficacy of faricimab in the treatment of aflibercept-refractory nvAMD.

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Objective: To investigate cellular-level morphological alterations in the retinal neuroglia in eyes with epiretinal membrane (ERM).

Design: Prospective cross-sectional, observational study (November 2020-May 2022).

Subjects And Controls: We included 41 eyes with unilateral idiopathic ERM and 33 healthy eyes of healthy volunteers.

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Article Synopsis
  • The study focused on the epidemiology of angioid streaks (AS) and pseudoxanthoma elasticum (PXE) using a national health claims database in Japan, covering 126 million individuals.
  • During a 10-year period (2011-2020), they identified 6,598 cases of AS and 1,020 cases of PXE, with incidence rates of 0.52 and 0.08 per 100,000 person-years, respectively.
  • The findings highlight a younger mean age at death for patients with AS (79.3 years) and PXE (77.1 years) compared to the general population, stressing the need for timely diagnosis and management to prevent premature mortality.
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Purpose: To describe a rare case of Epstein-Barr virus (EBV)-positive primary vitreoretinal lymphoma in an immunosuppressed patient.

Methods: Observational case report.

Results: A 64-year-old man under immunosuppressive therapy for rheumatic arthritis was referred for 2 months of blurred vision and decreased visual acuity in the right eye.

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Purpose: To examine whether extended interscan time (IST) on optical coherence tomography angiography (OCTA) can detect slow retinal blood flow, which is undetectable on default IST, in the healthy macula.

Methods: OCTA (OCT-A1, Canon Inc.) scanning of a macular area measuring 4 × 4 mm2 of 14 healthy eyes of 14 healthy volunteers with no history or evidence of systemic and macular diseases was performed.

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Purpose: To investigate the predictors of macular chorioretinal atrophy, consisting of patchy atrophy (PA) at the macula and choroidal neovascularization (CNV)-related macular atrophy (CNV-MA), during treatment with ranibizumab or aflibercept for myopic CNV (mCNV) and its impact on visual outcomes.

Methods: This retrospective study included 82 eyes with treatment-naïve mCNV who were treated with pro re nata injections of ranibizumab or aflibercept.

Results: Nine eyes (11.

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Purpose: To examine choroidal angiographic features in the posterior pole associated with resolution or persistency of subretinal fluid (SRF) in eyes with central serous chorioretinopathy (CSC).

Design: Observational case series.

Methods: Twenty-nine patients with treatment-naïve CSC were divided into two groups based on the presence or absence of SRF 3 months after the initial visit (month 3) without any treatment.

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Purpose: To investigate factors associated with 3-month or 1-year best-corrected visual acuity (BCVA) after vitrectomy with subretinal tissue plasminogen activator injection for submacular hemorrhage (SMH) and to identify the predictors of early displacement.

Methods: This prospective cohort study included consecutive eyes with SMH complicating neovascular age-related macular degeneration or retinal macroaneurysm that underwent vitrectomy with subretinal tissue plasminogen activator injection and were followed up for at least 3 months. Parameters that correlated with 3-month BCVA, 1-year BCVA, and 2-week displacement grade (0-3) were identified.

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We aimed to obtain widefield (WF) swept source optical coherence tomography (SS-OCT) data and examine the features of choroidal thickness maps in healthy eyes. The posterior pole choroidal thickness was examined in 127 eyes using enhanced depth imaging of SS-OCT with a viewing angle of 20 (vertical) × 23 (horizontal) mm, and choroidal thickness maps were generated. For SS-OCT image analysis, we developed a grid with inner and outer rings, each divided into superotemporal, inferotemporal, superonasal, and inferonasal quadrants, comprising a total of nine subfields, including the central 3-mm ring.

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We examined the effect of reduced fluence (rf)-photodynamic therapy (PDT) of the macular area on the wide-field choroidal thickness in 20 eyes with central serous chorioretinopathy (CSC) and 20 age- and sex-matched control eyes. The choroidal thickness at the posterior pole was measured before and after rf-PDT, using a grid with inner and outer rings, each divided into superotemporal, inferotemporal, superonasal, and inferonasal quadrants, respectively, making up a total of nine subfields including the central 3 mm ring. Before treatment, all eyes showed wide-field choroidal thickening from the dilated vortex vein ampulla to the fovea, along the course of the vein.

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Purpose: To investigate the 10-year visual outcome and chorioretinal atrophy after a single intravitreal ranibizumab injection followed by a pro re nata regimen for myopic macular neovascularization in pathologic myopia, and to identify the factors associated with 10-year best-corrected visual acuity (BCVA).

Methods: This retrospective observational study evaluated 26 consecutive treatment-naïve eyes (26 patients) with myopic macular neovascularization in pathologic myopia who underwent a single intravitreal ranibizumab followed by a pro re nata regimen of intravitreal ranibizumab and/or intravitreal aflibercept injection and observed over 10 years. We assessed changes in BCVA and morphological parameters, including the META-PM Study category as a chorioretinal atrophy index.

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Computational screening is one of the fundamental techniques in drug discovery. Each compound in a chemical database is bound to the target protein in virtual, and candidate compounds are selected from the binding scores. In this work, we carried out combinational computation of docking simulation to generate binding poses and molecular mechanics calculation to estimate binding scores.

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