1.Neovascular Glaucoma after Diabetic Vitrectomy: Incidence and Risk Factors
Hyeon Woo SON ; Jung Min PARK ; Myeong In YEOM
Journal of the Korean Ophthalmological Society 2021;62(7):963-968
Purpose:
The prevalence and risk factors of neovascular glaucoma (NVG) after diabetic vitrectomy were evaluated.
Methods:
This retrospective study included 171 eyes of 141 patients who underwent diabetic vitrectomy in-hospital between March 2013 and July 2019 and were followed for >12 months postoperatively. Regardless of the presence or absence of neovascularization in the anterior segment, all patients received injections of intravitreal bevacizumab during vitrectomy. Patients with preoperative neovascularization in iris (NVI) or angle (NVA) received both intracameral and intravitreal bevacizumab injections. Data were collected regarding baseline demographics, preoperative best-corrected visual acuity, intraocular pressure, hypertension, NVG in the fellow eye, panretinal photocoagulation history, iris and angle neovascularization, and postoperative findings (e.g., rebleeding and residual retinal detachment).
Results:
In total, 141 patients and 171 eyes were included in the study, and the incidence of postoperative NVG was 5.85% (10 patients). Five patients (27.78%) with preoperative NVI or NVA developed postoperative NVG. Significant risk factors for postoperative NVG were preoperative NVA or NVI (odds ratio [OR] = 16.428, p = 0.003), shorter diabetic duration (OR = 0.853, p = 0.033), and the absence of preoperative panretinal photocoagulation (OR = 0.006, p = 0.035).
Conclusions
There is a high possibility of postoperative NVG in patients with preoperative NVI or NVA, a short duration of diabetes, and no preoperative panretinal photocoagulation. In such patients, close monitoring is required after diabetic vitrectomy.
2.Effects of Axial Length and Anterior Chamber Depth on Intrascleral Fixation Using a Fibrin Adhesive
Journal of the Korean Ophthalmological Society 2021;62(5):656-664
Purpose:
The purpose of this study was to evaluate the effect of axial length and anterior chamber depth in vitrectomy and intraocular lens intrascleral fixation with a fibrin adhesive.
Methods:
The study retrospectively reviewed 61 eyes of 61 patients, who were followed up for over 6 months after surgery. The patients were divided into three groups according to their axial length: group 1, < 22 mm; group 2, 22 to < 25 mm; and group 3, > 25 mm. The patients were further divided into three sub-groups according to their anterior chamber depth: group A, < 3.0 mm; group B, 3.0 mm to < 3.6 mm; and group C, > 3.6 mm. We measured and analyzed the best-corrected visual acuity, spherical value, cylindrical value, and spherical equivalent of each group before surgery and at 6 months postoperatively.
Results:
When comparing the groups preoperatively and postoperatively, the best-corrected visual acuity, spherical value, and spherical equivalent showed significant improvement in all groups (p < 0.05). The incidence of complications, such as haptic slippage and intraocular lens dislocation, increased with the axial length and anterior chamber depth.
Conclusions
The use of fibrin adhesive for intraocular lens intrascleral fixation improves visual acuity and reduces refractive error. Postoperatively, there was no significant change in cylindrical value. Because axial length and anterior chamber depth affect refractive error, both should be considered in correlation with the surgical method.
3.Frosted Branch Angiitis Associated with Epstein-Barr Virus Infection
Journal of the Korean Ophthalmological Society 2019;60(7):706-711
PURPOSE: To report a case of frosted branch angiitis (FBA) associated with Epstein-Barr virus (EBV) infection in a child. CASE SUMMARY: A 7-year-old boy presented with bilateral blurred vision. On ophthalmic examination, his best-corrected visual acuity was 20/25 in the right eye and 20/32 in the left eye. The pupils were equal, round, and reactive to light without a relative afferent pupillary defect. He had normal color vision in both eyes. Slit-lamp examination revealed no abnormalities in the anterior parts of the eyes. Fundoscopic examination revealed prominent white sheathing retinal vasculitis predominantly on the veins in all quadrants, as well as macular edema and irregular foveal reflex in both eyes. Fluorescein angiography showed normal blood flow, but late diffuse staining and leakage of the affected vessels. Spectral domain optical coherence tomography (SD-OCT) showed thickening of the vessel walls, swelling due to hyperreflective material, and hyperreflective retinal depositions. Serological tests and the serum polymerase chain reaction for EBV were positive. A diagnosis of FBA associated with EBV was made. He was treated with systemic acyclovir and steroids. The response was rapid, with improvement in visual acuity to 20/20 in both eyes by day 3. After 7 weeks, all clinical signs resolved and SD-OCT examination showed normal vessel wall thickness and the absence of hyperreflective depositions. CONCLUSIONS: EBV may present with FBA even in the absence of a systemic sign of primary EBV infection. Thus, EBV should be considered as the etiology of FBA.
Acyclovir
;
Child
;
Color Vision
;
Diagnosis
;
Epstein-Barr Virus Infections
;
Fluorescein Angiography
;
Herpesvirus 4, Human
;
Humans
;
Macular Edema
;
Male
;
Polymerase Chain Reaction
;
Pupil
;
Pupil Disorders
;
Reflex
;
Retinal Vasculitis
;
Retinaldehyde
;
Serologic Tests
;
Steroids
;
Tomography, Optical Coherence
;
Vasculitis
;
Veins
;
Visual Acuity
4.Neovascular Glaucoma after Diabetic Vitrectomy: Incidence and Risk Factors
Hyeon Woo SON ; Jung Min PARK ; Myeong In YEOM
Journal of the Korean Ophthalmological Society 2021;62(7):963-968
Purpose:
The prevalence and risk factors of neovascular glaucoma (NVG) after diabetic vitrectomy were evaluated.
Methods:
This retrospective study included 171 eyes of 141 patients who underwent diabetic vitrectomy in-hospital between March 2013 and July 2019 and were followed for >12 months postoperatively. Regardless of the presence or absence of neovascularization in the anterior segment, all patients received injections of intravitreal bevacizumab during vitrectomy. Patients with preoperative neovascularization in iris (NVI) or angle (NVA) received both intracameral and intravitreal bevacizumab injections. Data were collected regarding baseline demographics, preoperative best-corrected visual acuity, intraocular pressure, hypertension, NVG in the fellow eye, panretinal photocoagulation history, iris and angle neovascularization, and postoperative findings (e.g., rebleeding and residual retinal detachment).
Results:
In total, 141 patients and 171 eyes were included in the study, and the incidence of postoperative NVG was 5.85% (10 patients). Five patients (27.78%) with preoperative NVI or NVA developed postoperative NVG. Significant risk factors for postoperative NVG were preoperative NVA or NVI (odds ratio [OR] = 16.428, p = 0.003), shorter diabetic duration (OR = 0.853, p = 0.033), and the absence of preoperative panretinal photocoagulation (OR = 0.006, p = 0.035).
Conclusions
There is a high possibility of postoperative NVG in patients with preoperative NVI or NVA, a short duration of diabetes, and no preoperative panretinal photocoagulation. In such patients, close monitoring is required after diabetic vitrectomy.
5.Effects of Axial Length and Anterior Chamber Depth on Intrascleral Fixation Using a Fibrin Adhesive
Journal of the Korean Ophthalmological Society 2021;62(5):656-664
Purpose:
The purpose of this study was to evaluate the effect of axial length and anterior chamber depth in vitrectomy and intraocular lens intrascleral fixation with a fibrin adhesive.
Methods:
The study retrospectively reviewed 61 eyes of 61 patients, who were followed up for over 6 months after surgery. The patients were divided into three groups according to their axial length: group 1, < 22 mm; group 2, 22 to < 25 mm; and group 3, > 25 mm. The patients were further divided into three sub-groups according to their anterior chamber depth: group A, < 3.0 mm; group B, 3.0 mm to < 3.6 mm; and group C, > 3.6 mm. We measured and analyzed the best-corrected visual acuity, spherical value, cylindrical value, and spherical equivalent of each group before surgery and at 6 months postoperatively.
Results:
When comparing the groups preoperatively and postoperatively, the best-corrected visual acuity, spherical value, and spherical equivalent showed significant improvement in all groups (p < 0.05). The incidence of complications, such as haptic slippage and intraocular lens dislocation, increased with the axial length and anterior chamber depth.
Conclusions
The use of fibrin adhesive for intraocular lens intrascleral fixation improves visual acuity and reduces refractive error. Postoperatively, there was no significant change in cylindrical value. Because axial length and anterior chamber depth affect refractive error, both should be considered in correlation with the surgical method.
6.Therapeutic Trial of Low Dose Amiodarone in Ventricular Arrhythmia.
In Ju KIM ; Won Tae CHUNG ; Jeong Wan KIM ; Deog Hyeon SON ; Young Woo SHIN ; Yeong Kee SHIN
Korean Circulation Journal 1988;18(3):455-461
The antiarrhythmic efficacy if low dose amiodarone treatment was studied in 30 cases of ventricular premature beats(VPBs). Amiodarone was administered 600mg daily in three divided doses for for initial 7-10 days as loadihg dosage,then 100-200mg once daily as maintenance. The results obtained were as follow : 1) The complete control of VPBs was achieved by amiodarone treatment in 90%, 27cases of 30 cases(all 11 cases with simple VPBs and 16 cases of the remainders with complex VPBs). 2) The QT interval and QTc were significantly prolonged, whereas heart rate was reduced significantly after amiodarone treatment. 3) In 27 cases of responder, the frequency of VPBs began to decrease overtly 2-3 days after amiodarone administration, then relatively stablized in 6 days, and complete cnotrol of VPBs was achieved in all cases about 10 days after treatment. 4) No significant side-reaction was observed except the decrease of serm T3 level after treatment.
Amiodarone*
;
Arrhythmias, Cardiac*
;
Heart Rate
;
Selective Estrogen Receptor Modulators
7.Neural cell adhesion molecule (NCAM) induces neuronal phenotype acquisition in dominant negative MEK1-expressing hippocampal neural progenitor cells.
Experimental & Molecular Medicine 2006;38(6):732-738
It has been shown that neural cell adhesion molecule (NCAM)-induced neuronal differentiation is extracellular signal-regulated kinase (ERK)-dependent. However, an involvement of the mitogen activated protein kinase (MAPK) kinase (MEK), an upstream kinase of ERK, has not been directly demonstrated in this process. Therefore, we investigated whether the MEK1 plays a critical role in the NCAM-induced neuronal differentiation of hippocampal neural progenitor cells (NPCs). NPCs were transiently transfected with expression plasmids encoding activated or dominant negative (DN) forms of MEK1. The expression of DN MEK1 inhibited neuronal phenotype acquisition and soluble NCAM rescued the defect in the neuronal phenotype acquisition in DN-MEK1-transfected cells, suggesting that NCAM might contribute to the neuronal differentiation via distinct, parallel pathways including the MEK pathway. In cells expressing wild type MEK1 or constitutively active MEK1 on the other hand, the percentage of cells positive for beta-tubulin type III (Tuj1), a marker for early postmitotic neurons, was higher than seen in vector-transfected cells. These results suggest that the activation of MEK1 is required for obtaining neuronal phenotype in NPCs.
Transfection
;
Stem Cells/cytology/drug effects/*metabolism
;
Solubility
;
Rats
;
*Phenotype
;
Neurons/cytology/drug effects/*metabolism
;
Neural Cell Adhesion Molecules/*pharmacology
;
Mutation/genetics
;
MAP Kinase Kinase 1/genetics/*metabolism
;
Hippocampus/cytology/drug effects/*metabolism
;
Gene Expression Regulation
;
Cells, Cultured
;
Cell Differentiation
;
Animals
8.Sex Differences in Lifestyle Factors of Metabolic Syndrome in Korean Adults.
Jun Seok SON ; Byung Mann CHO ; Young Wook KIM ; Chang Ho CHAE ; Chan Woo KIM ; Ja Hyeon KIM
Korean Journal of Health Promotion 2012;12(1):13-21
BACKGROUND: Metabolic syndrome is a major risk factor for cardiovascular disease. The combination of an aging population with a chronic diseased population is leading to an increase in the mortality rate due to cardiovascular diseases. The purpose of this study was to assess the prevalence of metabolic syndrome in the Korean population and to evaluate its related factors for sex differences. METHODS: From April 2007 to December 2008, a total of 2,729 volunteers aged 40-69 years living in Changwon city underwent a clinical examination at a hospital in Changwon, Korea. Metabolic syndrome was diagnosed following the criteria defined in Circulation 2009. The clinical examination included measuring anthropometric variables and cardiovascular risk factors, while lifestyle factors were assessed through a questionnaire. RESULTS: The prevalence of metabolic syndrome in our sampling pool was 25.2% with a break down by sex showing a rate of 30.2% in men and 22.2% in women. Related factors associated with metabolic syndrome common to both sex were age, self-health assessment, and alcohol consumption. Sleep duration seemed to be a related factor in men, while income, education, and menstruation status played significant roles in women. CONCLUSIONS: To better manage metabolic syndrome, men need to be educated on alcohol use and women of low socioeconomic status require particular attention as do the aging population and postmenopausal women.
Adult
;
Aged
;
Aging
;
Alcohol Drinking
;
Cardiovascular Diseases
;
Female
;
Humans
;
Korea
;
Life Style
;
Male
;
Menstruation
;
Prevalence
;
Risk Factors
;
Sex Characteristics
;
Social Class
9.The clinical usefulness of cardiac troponin I as a marker for severity in patients with congestive heart failure.
Hyeon Gook LEE ; Woo Hyung BAE ; Seong Ho KIM ; Byung Jae AN ; Kook Jin CHUN ; Taek Jong HONG ; Byung Mann JO ; Han Chul SON ; Yung Woo SHIN
Korean Circulation Journal 2000;30(6):724-728
BACKGROUND AND OBJECTIVES: Spontaneous progression of severe congestive heart failure is structurally characterized by cellular degeneration and multiple foci of myocardial cell death. The cardiac troponin I (cTnI), one of the subunits of the troponin regulatory complex, binds to actin and inhibits interaction between actin and myosin. cTnI is uniquely expressed in the adult human myocardium, and an increase in its circulating levels is highly indicative of myocardial injury. In this study, we addressed the usefulness of cTnI as a sensitive and specific molecular marker for severity in patients with congestive heart failure. MethodscTnI, creatinin kinase-MB (CK-MB), and myoglobin were assessed in 59 patients with severe congestive heart failure diagnosed by the echo-cardiography and gated equilibrium blood pool heart scan. Also we assesed cTnI, creatinin kinase-MB (CK-MB), and myoglobin in 25 persons without cardiac disease in echocardiography. RESULTS: 1) The cTnI con-centration was 89.6+/-69.3 pg/mL in patients with congestive heart failure and its level was greater than that of the control group (22.4+/-17.1, p=0.001). 2) The cTnI level differed significantly according to left ventricular ejection fraction (EF), 117.3+/-73.8 pg/mL in patients with EF\<40% (28 patients), 66.3+/-44.5 pg/mL in patients with EF> or =40% (31 patients), 22.4+/-17.1 pg/mL in the control group (25 persons) (p=0.001). CONCLUSION: cTnI was useful as a specific and sensitive serum molecular marker in patients of congestive heart failure. And its level reflected the severity of congestive heart failure.
Actins
;
Adult
;
Cell Death
;
Echocardiography
;
Equidae
;
Estrogens, Conjugated (USP)*
;
Heart
;
Heart Diseases
;
Heart Failure*
;
Humans
;
Myocardium
;
Myoglobin
;
Myosins
;
Stroke Volume
;
Troponin I*
;
Troponin*
10.Compliance and Effective Management of the Hand-Foot Syndrome in Colon Cancer Patients Receiving Capecitabine as Adjuvant Chemotherapy.
Hyun Sook SON ; Woo Yong LEE ; Won Suk LEE ; Seong Hyeon YUN ; Ho Kyung CHUN
Yonsei Medical Journal 2009;50(6):796-802
PURPOSE: Physicians and oncology nurses must continue to update their knowledge on treatment and treatment-related side effects, while searching for effective methods to prevent or manage side effects. The objective of our study was to describe the incidence and response to treatment of the hand-foot syndrome (HFS) and the compliance with treatment of patients with stage IIB, IIIA, IIIB, and IIIC colon cancer that were treated with capecitabine alone as adjuvant therapy. MATERIALS AND METHODS: Between September 2005 and September 2006, 84 patients fulfilled the inclusion criteria and were included in this retrospective analysis of prospectively collected data. RESULTS: The treatment compliance rate was 90.5% (76 out of the 84 patients). The HFS developed in 65 patients (77.4%). Thirty-three patients (50.7%) had grade 1 HFS, 22 patients (33.8%) had grade 2 HFS and 10 patients (15.5%) had grade 3 HFS, as their most severe episode. For Grade 1 patients, the dose was maintained, and skin barrier cream and moist exposed burn ointment (MEBO) were applied. For Grade 2 patients, either the dose was maintained or 25% of the dose was reduced; MEBO and supportive care were provided. For Grade 3 patients, one cycle of chemotherapy was interrupted followed by dose adjustment; MEBO and supportive care were provided. CONCLUSIONS: HFS is manageable if both patients and oncology care teams are educated about HFS associated with capecitabine. The HFS is treated by patient education, preventive management, ointment application, conservative management, dose reduction, and interruption of chemotherapy administration.
Adult
;
Aged
;
Antimetabolites, Antineoplastic/adverse effects/*therapeutic use
;
Chemotherapy, Adjuvant/adverse effects
;
Colonic Neoplasms/*drug therapy
;
Deoxycytidine/adverse effects/*analogs & derivatives/therapeutic use
;
Female
;
Fluorouracil/adverse effects/*analogs & derivatives/therapeutic use
;
Foot Dermatoses/*chemically induced
;
Hand Dermatoses/*chemically induced
;
Humans
;
Male
;
Middle Aged
;
Retrospective Studies
;
Syndrome