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다공성 안와충전물에서 혈관생성 및 유지에 대한 혈관전구세포와 섬유소의 역할
양재욱,이호영,박세광,양영일.Jae Wook Yang. M.D.. Ph.D.. Ho Young Lee. M.D.. Sae Gwang Park. M.D.. Ph.D.. Young Il Yang. M.D.. Ph.D. 대한안과학회 2008 대한안과학회지 Vol.49 No.7
Purpose: The effects of endothelial progenitor cells (EPCs) and fibrin on fibrovascular growth into porous polyethylene orbital implants (Medpor® sheet) were investigated using stem cells. Methods: EPCs were separated from human adipose fat tissue for culture. Fluorescence-activated cell sorting (FACS) was used to identify the phenotype and to analyze the purity of EPCs cultivated from human adipose tissue. Processed Medpor® sheets were inserted in each quadrant of the subcutaneous fat layer under the dorsal surface of 20 anesthetized athymic nude mice, using sterile methods. Medpor® sheets processed with endothelial progenitor cells and fibrin were inserted into the two top quadrants, a Medpor® sheet processed with fibrin was inserted in the lower right quadrant, and an unprocessed Medpor® sheet was inserted in the lower left quadrant of each mouse. The mice were sacrificed on the seventh day. The adhesiveness and blood vessel formation were quantified by weight and the number of blood cells within the Medpor® sheets. Hematoxylin and eosin (H&E) and toluidine blue stains were used to analyze fibrovascular and cell growth within the Medpor® sheets. Results: The sheets processed with EPCs and fibrin were heavier and contained more white and red blood cells (p<0.001) than the other sheets. The sheets processed with fibrin alone were heavier (p<0.01) and contained more blood cells (p<0.001) than the unprocessed sheets. The degree of vessel formation and tissue adhesiveness was greatest in the group of Medpor® sheets processed with EPCs and fibrin. The sheets processed with fibrin only had greater tissue adhesiveness and fibrovascular proliferation than the unprocessed Medpor® sheets. Conclusions: Endothelial progenitor cells and fibrin applied to Medpor® sheets improve fibrovascular proliferation and tissue adhesiveness. When both are applied together, a synergistic effect is seen. J Korean Ophthalmol Soc 49(7):1135-1145, 2008
Acyclonucleoside 류의 합성(2) -2'',3''-disubstituted secouridine의 합성-
양재욱(Jae Wook Yang),홍경애(Kyong Aie Hong),한효경(Hyo Kyung Han),천문우(Moon Woo Chun),정원근(Won keun Chung) 대한약학회 1989 약학회지 Vol.33 No.5
The synthetic study of 2'',3''-diazido and difluoro secouridines toward development of new antiviral agents is described. These acyclic nucleosides were synthesized from uridine by the method of ring opening reaction of sugar moiety.
최성욱,양재욱,이슬기,Sung Wook Choi,MD,Jae Wook Yang,MD,PhD,Sul Gee Lee,MD,PhD 대한안과학회 2009 대한안과학회지 Vol.50 No.2
Purpose: To report a case of bilateral Marcus Gunn syndrome, which can be easily overlooked. Case summary: A 6‐year‐old boy visited our clinic complaining of right ptosis. On ocular examination, the palpebral fissure width was 4 mm in the right lid and 7 mm in the left lid. Marginal reflex distance 1 (MRD 1) was ‐1 mm in the right lid and 2 mm in the left lid. Bilateral levator muscle function was good. When the patient moved the jaw to the right side, the left eyelid was retracted by 2 mm, and when the jaw was moved to the left side, the right upper eyelid retracted by 4 mm, which showed a moderate bilateral jaw‐winking phenomenon. There was no change in bilateral palpebral fissure width when only opening the mouth without jaw movement. Conclusions: Asymmetrical bilateral ptosis can be easily misdiagnosed for unilateral ptosis, and concurrent Marcus Gunn phenomenon can exist. Therefore, a thorough examination is necessary when examining a ptosis patient.
오하나,양재욱,김정림.Ha Na Oh. MD. Jae Wook Yang. MD. PhD. Jung Lim Kim. MD 대한안과학회 2012 대한안과학회지 Vol.53 No.5
Purpose: To report a rare case of primary orbital synovial sarcoma. Case summary: A 55-year-old male visited our clinic with a 2-month history of decreased visual field in the left eye. The best corrected visual acuity of the left eye was 1.0, and 2.5 mm of proptosis was observed. There was slight limitations in motility and a mild visual field defect in the inferotemporal quadrant of the left eye. Funduscopic examination of the left eye revealed papilledema. Orbital magnetic resonance imaging (MRI) demonstrated the presence of an orbital mass that extended inferotemporally into the left orbit. On magnetic resonance imaging, a well-demarcated and 2.7 × 2.0 × 2.2 cm sized tumor was identified with intermediate signal intensities on T1/T2-weighted scans with slight homogenous enhancement. We approached the orbital mass using a lateral conjunctival incision with left canthotomy and cantholysis and performed partial surgical resection of the mass because the mass encircled the optic nerve. The mass was diagnosed as synovial sarcoma based on the findings of both histopathology and immunohistochemical staining. Postoperatively, the patient underwent radiation therapy to the rest of the tumor site. Conclusions: Synovial sarcoma should be considered in the differential diagnosis of an orbital mass lesion encircling the optic nerve. Radiation therapy is useful to treat completely unresectable primary synovial sarcoma. J Korean Ophthalmol Soc 2012;53(5):716-720
홍채각막내피증후군 환자에서 섬유주절제술과 안내밸브삽입술 후 치료 성적 비교
김정림,양재욱,Jung Lim Kim,Jae Wook Yang 대한안과학회 2012 대한안과학회지 Vol.53 No.5
Purpose: To compare surgical outcomes and corneal endothelial cell densities in patients with glaucoma secondary to iridocorneal endothelial (ICE) syndrome who underwent trabeculectomy with mitomycin-C (MMC) versus those who underwent Ahmed Glaucoma Valve (AGV) implantation. Methods: Twenty-one patients with ICE syndrome who underwent either trabeculectomy with MMC or AGV implantation were included in this study. All patients had more than 12 months of follow-up after glaucoma surgery. Intraocular pressure (IOP), visual acuity (VA) and corneal endothelial cell density were compared according to the method of surgery. Results: Ten eyes had undergone a trabeculectomy with MMC, and 11 eyes had an AGV implantation. In eyes that underwent a trabeculectomy with a MMC, there were no statistically significant differences between preoperative and postoperative month 12 in IOP, VA or corneal endothelial cell density. In eyes that underwent AGV implantation, postoperative IOP, VA and corneal endothelial cell density were statistically significantly lower than the preoperative values. Conclusions: When determining the method of glaucoma surgery in patients with ICE syndrome, the additional procedures needed to maintain the surgical success of trabeculectomy with MMC and the corneal decompensation which is caused by a decrease in corneal endothelial cell density after AGV implantation should be considered. J Korean Ophthalmol Soc 2012;53(5):668-673
안구위축 혹은 변색된 실명안에서 Scleral Shell 의안 착용 결과에 대한 임상 연구
이호영,양재욱.Ho Young Lee. M.D.. Jae Wook Yang. M.D.. Ph.D. 대한안과학회 2008 대한안과학회지 Vol.49 No.7
Purpose: To show that scleral shells can be good cosmetic prostheses for phthisis bulbi or discolored blind eyes for which no evisceration or enucleation is indicated. Methods: Twenty patients with phthisis bulbi or discolored blind eyes were enrolled in this study. All patients were using scleral shells. We evaluated any complications induced by the scleral shells and the cosmetic results during the follow-up period. Results: The average central thickness of the scleral shell was 1.84±0.26 mm, and the average volume was 1.52±0.25 ml. The average difference in palpebral fissure width between the fellow eye and the eye with a fitted scleral shell was 0.8±0.62 mm. One patient complained about ocular irritation and difficulty in fitting but was satisfied with the cosmetic appearance. Conclusions: Fitting scleral cover shells over phthisis bulbi or discolored blind eyes without evisceration or enucleation could be a successful remedy for enhancing cosmetic appearance. J Korean Ophthalmol Soc 49(7):1041-1045, 2008