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냉동보관 제대혈 신생혈관 유도성세포배양과 허혈성 하지 쥐모델에서의 치료효과연구
김성환 ( Sung Whan Kim ),손영덕 ( Young Doug Sohn ),변기현 ( Ki Hyun Byun ) 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.4
Currently, human bone marrow was thought to be the main source of stem cells. However, bone marrow derived stem cell is a limited source of cells for allograft transplantation, because it is not easy to collect bone marrow and they also have the possibility of viral infection. Therefore, as an alternative stem cell source, human umbilical cord blood(hUCB) could overcome the limitations of bone marrow derived stem cells. However, it has been difficult to isolate mesenchymal stem cells(MSCs) from cryopreserved hUCB due to the containment of rare populations of mesenchymal progenitor cells(MPCs). We tried to establish the culture system for angiogenic cells isolation from cryopreserved hUCB. As a result, we successfully could culture angiogenic cells that have endothelial specific surface markers and the capacity for differentiation potential into endothelial cells. In addition, transplantation of these cells into ischemic hindlimb mice showed that increased blood flow and higher limb salvage rate in the hindlimb ischemia. Immunohistochemistry results also demonstrated that hUCB derived cells are detected in the arterial walls of the ischemic hindlimb. Therefore, it is suggested that transplantation of cultured angiogenic cells derived from cryopreserved hUCB may be a novel and useful therapeutic armament for similar ischemic diseases.
정상수(Sang Su Chung),김형종(Hyung Jung Kim),변기현(Ki Hyun Byun),박홍수(Hong Su Park),송종원(Jong Won Song),조준식(Jun Sik Cho),유광하(Kwang Ha Yoo),안철민(Chul Min Ahn),김성규(Sung Kyu Kim),이원영(Won Young Lee) 대한내과학회 1998 대한내과학회지 Vol.55 No.3
Endobronchial lipoma is a rare, benign neoplasm of the large bronchi, which makes up about 0.1 percent of all lung tumors. It can uce irreversible parenchymal lung damage or bronchiectasis if diagnosis and treatment are delayed. The treatment of endobronchial lipoma is early removal and surgical procedures depend on the status of distal parenchymal lung damage. We experienced a case of endobronchial lipoma in 53 year-old female patient, which caused total collapse of left lung and save left lung by enucleation of tumor via bronchotomy.
위석이 합병된 당뇨병성 위마비 치험 1예 : 증례 보고
이상인,박효진,김경철,박인서,변기현,염준섭 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.3
Diabetic gastroparesis is a common gastrointestinal complication which develops in about 20-30% of patients with longstanding diabetes mellitus. Recent studies have shown that erythromycin stimulates gastrointestinal motor activity by binding on motilin receptors of gastrointestinal smooth muscles and that it improves gastric emptying in patients with diabetic gastroparesis. In this respect, we present a 35-year-old patient with diabetic gastroparesis, complicated with a gastric bezoar, who was successfully treated with endoscopic bezoar fragmentation and oral erythromycin for 3 weeks.
식도직장으로 전이되어 직장 협착을 유발한 위암 1예 : 증례보고
이상인,박효진,김정환,박인서,이관식,이귀순,변기현 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.6
A 59-year old female was admitted to Yongdong Severance Hospital due to diarrhea and lower abdominal pain lasting for 2 months. She had a previous history of admission for stomach cancer on September 1995. At that time, she underwent total gastrectomy and gastroduodenostomy. The pathology of the specimen revealed a signet ring cell carcinoma of stomach. On admission, computerized tomography revealed rectal wall thickness and no evidence of lymph node enlargement in abdomen and pelvic cavity. Barium enema study showed stricture of rectum. After sigmoidoscopic biopsy, she was diagnosed as a rectal metastasis resulted in rectal stricture and underwent sigmoid loop colostomy. Hence we present a case of gastric cancer with rectal metastasis resulted in rectal stricture.