1.Outcome of Aflibercept-Bevacizumab Alternate Dosing in Neovascular Age-related Macular Degeneration with Limited Response to Aflibercept
Journal of the Korean Ophthalmological Society 2022;63(6):526-534
Purpose:
To investigate the efficacy of aflibercept-bevacizumab alternate dosing (AD) in neovascular age-related macular degeneration (AMD) with a limited response to bimonthly aflibercept injections.
Methods:
This retrospective study included patients given aflibercept-bevacizumab AD to treat neovascular AMD with bevacizumab given every alternate month between bimonthly aflibercept injections when they had a limited response to bimonthly aflibercept alone. The best-corrected visual acuity (BCVA) and central retinal thickness (CRT) were compared before AD and after the last AD. The incidence of subretinal fluid (SRF) and intraretinal fluid (IRF) before and after AD was also examined.
Results:
The study included 18 patients. The mean period between the diagnosis and AD was 37.9 ± 18.8 months and a mean of 3.1 ± 2.2 ADs were performed. The BCVA improved significantly from 0.45 ± 0.28 before AD to 0.36 ± 0.23 after AD (p = 0.036). The CRT decreased significantly from 440.3 ± 122.9 μm before AD to 317.7 ± 103.5 after AD (p = 0.001). The SRF was present in 94.4% and IRF in 55.6% before AD and in 22.2% and 11.1%, respectively, after AD.
Conclusions
Aflibercept–bevacizumab AD was effective at resolving SRF/IRF in neovascular AMD with a limited response to bimonthlyaflibercept injections and should be a useful treatment option.
2.Anterior Choroidal Artery Territory Infarction due to Internal Carotid Artery Dissection Presumably Caused by Scuba Diving
Daeun SHIN ; Yang-Ha HWANG ; Dong-Hyun SHIM
Journal of the Korean Neurological Association 2020;38(4):298-300
We report a case of anterior choroidal artery territory infarction due to internal carotid artery dissection presumably caused by scuba diving. A 44-year-old man presented with left facial palsy and hemiparesis. He had a history of scuba diving for 18 months. His last dive was 7 days ago, and he skipped decompression practice at that dive. We assumed that repetitive traumas and microbubbles during scuba diving, which made endothelium vulnerable to damage may have caused a carotid dissection.
3.Long-term Clinical Course and Prognostic Factor of Branch Retinal Artery Occlusion
Daeun SHIN ; Yeji KIM ; Chul Gu KIM ; Jong Woo KIM ; Jae Hui KIM
Journal of the Korean Ophthalmological Society 2023;64(4):296-305
Purpose:
To investigate the long-term clinical course and prognostic factors of branch retinal artery occlusion (BRAO).
Methods:
The medical records of patients diagnosed with BRAO were reviewed retrospectively. Visual acuity (VA) and central retinal thickness (CRT) at diagnosis were compared with those measured at the final visit. Patients with a decimal VA ≥ 0.6 (good prognosis group) were compared with those with a decimal VA ≤ 0.5 (poor prognosis group) at the final visit.
Results:
Fifty-five patients were enrolled and the mean follow-up period was 45.8 ± 27.8 months. The mean logarithm of minimum angle of resolution improved from 0.53 ± 0.57 at diagnosis to 0.36 ± 0.61 at the final visit (p = 0.026). The decimal VA was ≤ 0.1 in 13 (23.6%) patients, ≥ 0.2 and ≤ 0.5 in 16 (29.1%) patients, and ≥ 0.6 in 26 (47.3%) patients at diagnosis; the respective values were 9 (16.4%), 8 (14.5%), and 38 (69.1%) at the final visit. The mean CRT significantly decreased from 273.9 ± 34.7 µm at diagnosis to 248.9 ± 27.0 µm at the final visit (p < 0.001). The poor prognosis group (n = 17) was older (p = 0.044) and had a higher incidence of papillomacular bundle involvement (p < 0.001) than the good prognosis group (n = 38).
Conclusions
Patients with BRAO generally showed relatively favorable long-term outcomes. However, the final VA was ≤ 0.1 in 16.4% of them, suggesting the need for further treatment modalities to improve the outcome of patients with a poor prognosis.
6.Mapping Astrocytic and Neuronal μ-opioid Receptor Expression in Various Brain Regions Using MOR-mCherry Reporter Mouse
Woojin WON ; Daeun KIM ; Eunjin SHIN ; C. Justin LEE
Experimental Neurobiology 2023;32(6):935-409
The μ-opioid receptor (MOR) is a class of opioid receptors characterized by a high affinity for β-endorphin and morphine. MOR is a G proteincoupled receptor (GPCR) that plays a role in reward and analgesic effects. While expression of MOR has been well established in neurons and microglia, astrocytic MOR expression has been less clear. Recently, we have reported that MOR is expressed in hippocampal astrocytes, and its activation has a critical role in the establishment of conditioned place preference. Despite this critical role, the expression and function of astrocytic MOR from other brain regions are still unknown. Here, we report that MOR is significantly expressed in astrocytes and GABAergic neurons from various brain regions including the hippocampus, nucleus accumbens, periaqueductal gray, amygdala, and arcuate nucleus. Using the MORmCherry reporter mice and Imaris analysis, we demonstrate that astrocytic MOR expression exceeded 60% in all tested regions. Also, we observed similar MOR expression of GABAergic neurons as shown in the previous distribution studies and it is noteworthy that MOR expression is particularly in parvalbumin (PV)-positive neurons. Furthermore, consistent with the normal MOR function observed in the MOR-mCherry mouse, our study also demonstrates intact MOR functionality in astrocytes through iGluSnFr-mediated glutamate imaging. Finally, we show the sex-difference in the expression pattern of MOR in PV-positive neurons, but not in the GABAergic neurons and astrocytes. Taken together, our findings highlight a substantial astrocytic MOR presence across various brain regions.
7.Homonymous Central Scotomatous Visual Field Defect in a Patient with Lateral Geniculate Nucleus Infarction
Daeun SHIN ; Khanghee CHOI ; Yong-Won KIM ; Woochan CHOI
Journal of the Korean Neurological Association 2024;42(2):171-174
Incongruous visual field defects, such as sectoranopia, can result from lateral geniculate nucleus infarction. We present a rare case of right lateral geniculate nucleus infarction that manifests as a left inferior homonymous paracentral scotoma. According to the retinotopic organization of the visual tract, central vision from the macula is delivered to the occipital pole via the posterior portion of the lateral geniculate nucleus. Consequently, not only can occipital pole infarction lead to central visual loss, but partial lateral geniculate nucleus infarction can also produce similar manifestations of central visual loss.
8.What Kind of Stress Is Associated with Depression, Anxiety and Suicidal Ideation in Korean Employees?.
Young Chul SHIN ; Daeun LEE ; Jinmi SEOL ; Se Won LIM
Journal of Korean Medical Science 2017;32(5):843-849
Various types of stress affect mental health in the form of mood disorders, anxiety disorders, and suicidal ideation. Recently, the increasing suicide rate in the working-age population has become a major mental health concern in Korea. Thus, we investigated what kind of stress influence depression, anxiety, and suicidal ideation in Korean employees. The study participants were 189,965 employees who attended health screenings and responded to the Center for Epidemiologic Study-Depression Scale, the Beck Anxiety Inventory, and a questionnaire on the major causes of stress and suicidal ideation. We investigated the major causes of stress by gender and age categories and used binary logistic regression to determine the impact of the causes of stress on depression, anxiety and suicidal ideation. Of several stress causes, work-related stress was the most prevalent, regardless of age category and gender, followed by interpersonal relationships. However, interpersonal relationships and financial problems were the predominant causes of stress related to depression or suicidal ideation. This research suggests that despite the fact that work is the most common cause of stress for Korean employees, stress related to life problems other than work has a greater influence on the mental health of Korean employees.
Anxiety Disorders
;
Anxiety*
;
Depression*
;
Korea
;
Logistic Models
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Mass Screening
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Mental Health
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Mood Disorders
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Suicidal Ideation*
;
Suicide
9.Inadvertent Subclavian Artery Catheterization: Juxta-Catheter Thrombosis with Subsequent Stroke
Seok Yeol YANG ; Daeun SHIN ; Minsub CHO ; Sang Yeop LEE ; Yong Won KIM ; Yang Ha HWANG
Journal of the Korean Neurological Association 2019;37(4):435-437
No abstract available.
Anticoagulants
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Catheterization
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Catheters
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Embolism
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Stroke
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Subclavian Artery
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Thrombosis
10.Acute Ischemic Stroke Caused by Detachment of Cardiac Papillary Fibroelastomas
Minhee KIM ; Daeun SHIN ; WooChan CHOI ; Dong-Seok GWAK ; Man-Hoon HAN ; Yang-Ha HWANG ; Yong-Won KIM
Journal of the Korean Neurological Association 2022;40(2):148-151
Cardiac papillary fibroelastomas are associated with a high risk of systemic embolization in spite of benign nature. We report a case of 85-year-old patient with left supraclinoid internal carotid artery occlusion who treated with aspiration thrombectomy. Despite of the absence of residual mass on echocardiography, we could analyze pathologic specimens using retrieved embolus and confirmed cardiac papillary fibroelastoma as a rare cause of stroke.