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근육줄기세포가 유착된 Poly(ε-caprolactone)(PCL)를 이용한 조직공학적 방광재생을 위한 기초 연구
변석수,한동근,김현회,이은식,육순홍,이지열,길성호,이상섭,이진호 대한비뇨의학회 2005 Investigative and Clinical Urology Vol.46 No.10
Purpose: To investigate the feasibility of using a poly(ε-caprolactone) (PCL) sheet seeded with autologous muscle-derived stem cells as a bladder substitute. Materials and Methods: Muscle-derived stem cells were isolated from the gastrocnemius muscle of 9 female Sprague-Dawley rats using a preplate technique, and cultured on a 5x5mm PCL sheet. The sheets were implanted into the mesentery of the rats in an autologous manner. Three rats were sacrificed 2, 4 and 8 weeks after implantation, and the morphological changes were assessed by H&E and immunofluorescence staining including DAPI, myosin heavy chain(MHC) and choline acetyl transferase (CAT). Results: All the rats survived for the scheduled time. A mild inflammatory reaction was observed around the PCL sheet in the postoperative 2-week specimen but this receded with time. Muscle cells on the sheet were observed over the experimental period. The 8-week specimen showed a moderate amount of muscle cells on the sheet, and MHC and CAT immunofluorescence staining showed a positive reaction. The muscle layer was not well organized. Angiogenesis was quite noticable between the sheet and the muscle cells on the 8-week specimen. Conclusions: A PCL sheet seeded with autologous muscle-derived stem cells showed skeletal muscle differentiation on the sheets 8 weeks after mesenteric implantation in an autologous manner. This suggests the feasibility of using a PCL sheet seeded with autologous muscle-derived stem cell as a bladder substitute.
The establishment of KORCC (KOrean Renal Cell Carcinoma) database
변석수,홍성규,이상철,국하림,이은식,김현회,곽철,구자현,정창욱,이지열,홍성후,김용준,황의창,권태균,김태환,강석호,김성한,정진수 대한비뇨의학회 2016 Investigative and Clinical Urology Vol.57 No.1
Purpose: The purpose of this article is to report establishment of the 1st Web-based database (DB) system to collect renal cell carcinoma (RCC) data in Korea. Materials and Methods: The new Web-based DB system was established to collect basic demographic and clinicopahtological characteristics of a large cohort of patients with RCC in Korea. Data from a total of 6,849 patients were collected from 8 tertiary care hospitals that agreed to participate in organizing the Korean Renal Cell Carcinoma (KORCC) study group as of 1 July 2015. Basic demographic and clinicopathological characteristics were collected. The data of patients who underwent surgical treatments were analyzed to characterize Korean RCC. Results: We established the 1st Web-based DB of Korean RCC, a database comprising renal mass management cases from multiple centers in Korea. The data of 5,281 patients who underwent surgical management (mean follow-up, 32 months) were analyzed. The most common symptom was incidentally detected renal mass (76.9%). Clinical T1a was the most common (54.3%) stage and mean tumor size was 4.8±4.2 cm. Radical nephrectomy accounted for 62.7% of cases and an open approach was used in 50.7% and 52.2% of radical and partial nephrectomies, respectively. The 5-year overall, cancer-specific and recurrence-free survival rates were 88.1%, 92.2%, and 88.0%, respectively. Conclusions: We report the 1st establishment of a Web-based DB system to collect RCC data in Korea. This DB system will provide a solid basis for the characterization of Korean RCC.
변석미,탁명림,강나루,고우신,윤화정 대한한방안이비인후피부과학회 2010 한방안이비인후피부과학회지 Vol.23 No.1
Objective : The purpose of this study is to investigate tinnitus of Plain Questions《素問》 and Miraculous Pivot《靈樞》. Methods : We conducted a study on the original text paragraphs of Internal Classic《內經》 containing the tinnitus and analysis of Yang, Ma, Zhang, Wang etc. We drew a parallel between tinnitus from Internal Classic《內經》and matching diagnoses from western medicine. Results : The results were as follows. 1. Tinnitus in Plain Questions《素問》Tong Pyeong Heo Sil Ron〈通評虛實論〉was similar to the symptoms of diabetes mellitus complication and schizophreniform disorder in western medicine. 2. Liver fire tinnitus in Plain Questions《素問》Yuk Won Jeong Gi Dae Ron〈六元正紀大論〉was similar to the symptoms of psychological distress in western medicine. 3. Phlegm fire tinnitus in Plain Questions《素問》Ji Jin Yo Dae Ron〈至眞要大論〉was similar to the symptoms of meniere`s disease and malfunction of autonomic nervous system in western medicine. 4. Blood deficiency tinnitus in Miraculous Pivot《靈樞》Sa Gi Jang Bu Byeong Hyeong〈邪氣藏府病形〉was similar to the symptoms of anemia in western medicine. 5. Tinnitus in Miraculous Pivot《靈樞》Gyeong Geun〈經筋〉was similar to the myofacial pain syndrome of the sternocleidomastoid muscle and the masseter muscle in western medicine. 6. Gallbladder deficiency tinnitus in Miraculous Pivot《靈樞》Gwol Hyeong〈厥病〉was similar to the symptoms of otitis media and labyrinthitis in western medicine. 7. Kidney deficiency tinnitus in Miraculous Pivot《靈樞》Gyeol Gi〈決氣〉and Hai Ron〈海論〉was similar to the symptoms of degenerative auditory organ in western medicine. 8. Tinnitus in Internal Classic《內經》showed close relations with the symptoms of the wind character. Conclusion : We analyzed the original text paragraphs of Internal Classic《內經》 and explanations about tinnitus. Further studies are needed to compare oriental medicine and western medicine diagnoses to develop better treatments for tinnitus.
연령연관황반변성에서 망막혈관종성증식과 동반된 망막색소상피 박리의 임상양상과 일차적인 광역학치료의 결과
변석호,홍진표,이효,오상준,김성수,고형준,이성철,권오웅 대한안과학회 2006 대한안과학회지 Vol.47 No.9
Purpose: To evaluate the incidence of retinal angiomatous proliferation (RAP) and retinal pigmented epithelial detachment (PED) in Korean age-related macular degeneration (ARMD) patients and results of photodynamic therapy (PDT) with verteporfin. Methods: Between May 2001 and December 2004, two hundred fifty-eight patients diagnosed of ARMD were evaluated and nine eyes of seven patients were as having RAP with PED. All patients underwent two or more sessions of PDT. Best-corrected visual acuity (BCVA), fundus photography, fluorescein angiography and ICG angiography were performed before and after treatment. Results: The incidence of RAP with PED was 2.8%. The mean age of onset was 71.7 and five of seven patients were female. After 17 months and mean 2.3 PDT treatments, mean BCVA decreased from 0.2 to 0.04. In two eyes, additional Transpupillary thermotherapy was undertaken. Occlusion of RAP and flattening of PED was observed in one eye, and four evolved toward stage 3 RAP. Three eyes with PDT developed tear of retinal pigmented epithelium. Conclusions: Korean ARMD patients showed a low incidence of RAP and poor visual outcomes even with treatment.