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전수경,박귀화,송필현,배영경,김성용,Jun, Soo Koung,Park, Kwi Hwa,Song, Phil Hyun,Bae, Young Kyung,Kim, Seong Yong 연세대학교 의과대학 2016 의학교육논단 Vol.18 No.3
The purpose of this study is to examine the factors that influence school life satisfaction based on personal variables, self-esteem, interpersonal relationships, and perception of the educational environment at a medical school in Korea. The data were collected from 228 medical students who agreed to participate in the study at a medical school. The Dundee Ready Medical Environment Measure (DREEM) and the self-esteem scale by Rosenberg were used. Questions measuring satisfaction of medical school life and interpersonal relationships (with professors, with senior/junior students, and with friends) were asked using a 5 point Likert scale. The data were analyzed by t-test, analysis of variance, and multiple regression analysis. The satisfaction of medical school life of male students was significantly higher than female students and increased with years of schooling. In DREEM, the students' perception of teachers decreased by school years. The relationship with senior and junior students of third year students was higher than other school years. The result of the regression analysis to determine the variables that affect satisfaction of medical school life showed that interpersonal relationships with senior and junior students, the students' social self-perception, and the students' perception of learning were significant. The results of this study will help medical schools in their plans to improve the level of satisfaction for the happiness and successful academic achievements of their students.
채선영 ( Seon Yeong Chae ),전소영 ( So Young Chun ),박민 ( Min Park ),장유진 ( Yu Jin Jang ),김진래 ( Jin Rae Kim ),오세행 ( Se Heang Oh ),이진호 ( Jin Ho Lee ),송필현 ( Phil Hyun Song ),권태균 ( Tae Gyun Kwon ),김태환 ( Tae Hwan 한국조직공학과 재생의학회 2014 조직공학과 재생의학 Vol.11 No.1s
The innate extracellular matrix (ECM) scaffolds can be a promising scaffold for regeneration of complex organ such as heart, liver and kidney. They possess intact 3-dimentional architecture and biochemical components that allow to access to the organ`s capillary network. In this study we have developed a porcine renal ECM scaffold and analyzed its physical and biochemical characteristics including biocompatibility for human kidney regeneration. A segmented porcine kidney cortex was obtained and treated with 1% (v/v) Triton X-100 (Triton) or sodium dodecyl sulfate (SDS) in a shaking chamber, and rinsed with distilled water. After confirmation of decellularization with H&E stain, the matrix was lyophilized and sterilized. Scanning Electron Microscope (SEM) analysis showed that both scaffolds were preserved with proper architecture including porosity for cell adhesion and composition of the renal ECM. The water uptake ability of the Triton treated scaffold was higher than that of SDS treated one. The maximum compressive strength of Triton was lower than SDS treated scaffolds and that correlates with the results of porosity and water uptake analysis. In ATR-IR analysis, both scaffolds showed a peak at 3445-3446 cm-1 and that indicates the presence of amide II (-NH). Triton treated scaffold demonstrated that there are richer contents of ECM proteins and growth factors compared to SDS treated one. When scaffolds were seeded with primary human kidney cells, Triton treated scaffold showed 2.66 times higher number of adherent cells than SDS treated one at 24 hrs postseeding. On a CCK-8 analysis, the Triton treated scaffold showed significantly higher cell viability and proliferation rate than that of SDS treated one. Both scaffolds had no tumorigenecity for 8 weeks in vivo analysis. In conclusion, we successfully developed porcine renal ECM scaffold and confirmed that there is a great potential of porcine renal ECM scaffold to be used as human kidney regeneration. We also verified that 1% Triton X-100 is more suitable decellularizing agent than SDS regarding structural, biochemical integrity and biocompatibitilty of the scaffold. To support our findings and human application of practical regeneration, we are planning to perform in vivo experiment for kidney regeneration near future.
백운기,정석영,최우석,송필현,조철규,문기학,김동석 영남대학교 의과대학 2003 Yeungnam University Journal of Medicine Vol.20 No.1
Testicular teratoma is characterized that has more than one germ cell layer in various stages of maturation and differentiation. The incidence of mature teratoma varies from 2 to 9% of all germinal testicular tumor. Only 3 cases of bilateral teratoma have been reported in the literature to date. The teratoma can occurs at all ages but is most common between the age of 15-35 year. It is relatively infrequently seen in childhood and infancy. In these age group, teratoma tends to be a benign. Recently, we experienced one case of bilateral testicular teratoma in 4 month-old infancy. We report a case of bilateral testicular teratoma found infancy with review of related literatures.
최우석,이성호,정석영,송필현,백운기,조철규,박동춘,최준혁 영남대학교 의과대학 2002 Yeungnam University Journal of Medicine Vol.19 No.1
Lymphangioma is a benign tumor resulted from abnormal communication between large dermal lymphatic channels and central lymphatic system. The tumor is encountered more often in the neck and axilla and less often in mediastinum, omentum, retroperitoneum, and scrotum. It rarely developes at urogenital system, and there has been no previous description of lymphangioma involving the bladder wall in Korea. We report a case of 35-year-old female with infected huge lymphagioma arising from pelvic cavity and involving bladder wall.
최형철,김종호,하정희,이광윤,김원준,곽동석,김성희,송필현,여지현 영남대학교 의과대학 1999 Yeungnam University Journal of Medicine Vol.16 No.2
Background: Anticholinesterase drug inhibits acetylcholinesterase(AChE), induce accumulation of acetylcholine(ACh) near cholinergic receptors and cholinergic stimulation. This experiment was performed to study the effects of anticholinesterase drugs on gastric motility and the effect of ethanol on anticholinesterase drug-induced motility change. Materials and Methods: After excision of stomach, 2×10mm circular muscle strips were made, which were then fixed to the isolated muscle chamber. An isometric tension transducer was used to measure the contraction change of the gastric smooth muscle strips after drug addition. Results: Fenthion, an irreversible anticholinesterase drug, increased ACh induced contraction of gastric smooth muscle strips and PAM, a cholinesterase activator, antagonized this action. Physostigmine, a reversible anticholinesterase drug, also increased the ACh induced contraction. The gastric motility was decreased by PAM. Ethanol, which is known to induce smooth muscle relaxation, inhibited the increase of contraction by fenthion. Conclusion: These results indicate that irreversible and reversible anticholinesterase drugs increase gastric motility and antagonized by cholinesterase activating drugs. And when exposed to both ethanol and anticholinesterase drug, gastric motility was decreased by the smooth muscle relaxation effect by ethanol.