가토 두개골 결손부에 이식된 β-TCP의 골치유과정에서 맥동전자기장의 영향에 관한 연구

김상우(Sang-Woo Kim),황경균(Kyung-Gyun Hwang),임병섭(Byung-Sup Lim),박창주(Chang-Joo Park),정일혁(Il-Hyuk Chung),백승삼(Seung-Sam Paik),심광섭(Kwang-Sup Shim) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.4

The purpose of this research was to investigate whether pulsed electromagnetic field (PEMF) stimulation applied to the rabbit cranial defects grafted with β-tricalcium phosphate (β-TCP) could affect the new bone formation. With 16 New Zealand white rabbits under the same condition, bilateral calvarial bone defects were formed around the sagittal suture line. The defect on the left side was grafted with β-TCP, while on the right side was grafted by harvested autogenous bone. PEMF was applied to 8 rabbits for 8 hours per day. The bony specimen were divided into 3 groups, the group 1 was autogenous bone grafted specimen, the group 2 was β-TCP grafted with PEMF, and the group 3 was β-TCP grafted without PEMF. We investigated the bone regeneration & growth factor expression at 2, 4, 6, and 8 weeks. As a result, BMP 2 was expressed in the group 1 from 2 weeks, the group 2 from 4 weeks, and the group 3 from 6 weeks. BMP 4 was expressed in the group 1 from 2 weeks, in the group 2 and the group 3 from 4 weeks. 4. There was no significant difference in expression pattern of BMP 7, PDGF, VEGF, and TGF-β1 during grafted bone regeneration in group 1, 2, and 3. According to our results, PEMF stimulation could be effective on the new bome formation in animal study, and have a feasibility of clinical use.

위암조직에 있어 COX-2 발현이 림프관신생과 림프절 전이에 미치는 영향

전후완,백승삼,송영수,권성준,Chun, Hu-An,Paik, Seung-Sam,Song, Young-Soo,Kwon, Sung-Joon 대한위암학회 2006 대한위암학회지 Vol.6 No.4

목적: 위암 발생에서 cyclooxygenase-2 (COX-2)가 혈관신생을 유도한다는 연구보고는 많으나 COX-2와 림프관신생과의 연관성은 잘 알려져 있지 않다. 이에 위암에서 COX-2와 VEGF-C의 상관관계 및 다른 임상병리학적 인자들과 비교 분석하여 COX-2가 림프관신생 및 전이를 유도하는지 여부를 알고자 하였다. 대상 및 방법: 1995년 7월부터 2001년 6월까지 본원에서 위암으로 진단받고 수술을 시행 받은 100명의 환자를 대상으로 COX-2와 VEGF-C에 대한 면역조직화학 검사를 시행하였으며, 이 두 인자들의 상관관계 및 성별, 병기, 림프절 전이, 종양 위치, Lauren 분류법, 혈관침범등과의 관계를 비교 분석하였다. 결과: COX-2는 86%, VEGF-C는 70%에서 양성 반응을 보였다. VEGF-C와 COX-2 모두 림프절 전이와 유의한 상관관계를 보였고(P=0.033 and P=0.012) VEGF-C와 COX-2의 발현은 밀접한 상관관계를 보였다(P=0.026). 그러나 다른 인자들과는 유의한 상관관계를 보이지 않았다. 결론: 위암환자에서 COX-2 발현은 VEGF-C 발현과 유의한 상관관계가 있었고, 이 두 인자들은 모두 림프절 전이와 연관이 있었다. 이에 COX-2 발현은 VEGF-C 발현을 매개로 림프관신생에 관여한다고 할 수 있겠다. Purpose: Many previous studies have suggested that cyclooxygenase-2 (COX-2) over expression is closely related to angiogenesis. However, few have reported the relationship between COX-2 and lymphangiogenesis which is still unclear, The aim of this study was to determine the relationship between COX-2 expression and lymphangiogenetic factor, VEGF-C, in human gastric cancer and to correlate COX-2 and VEGF-C expression with other clinocopathological features to investigate whether COX-2 contributes to lymphangiogenesis and enhances lymph node metastasis. Materials and Methods: One hundred patients who underwent curative radical surgery in Hanyang University hospital from July 1998 to June 2001 were selected. The expression of COX-2 and VEGF-C were detected by using immunohistochemistry, and the relationships between these two parameters and several clinicopathological factors (gender, stage, lymph node status, tumor location, Lauren classification and angioinvasion) were determined. Results: Increased COX-2 expression was found in 86 of 100 tumor samples (86%) and in 70 of 100 tumor samples (70%) with VEGF-C. A high correlation between VEGF-C expression and lymph node metastasis was observed (P=0.033) along as well as COX-2 expression (P=0.012). Also, there was a significant correlation between COX-2 and VEGF-C expression (P=0.026), yet no correlation were found between COX-2 and VEGF-C expression and other clinicopathological parameters. Conclusion: Our study suggests that COX-2 expression contributes to lymphangiogenesis by mediating VEGF-C and finally promoting lymph node metastasis.

점액성 위 선암의 임상병리학적 특성

권성준(Sung Joon Kwon),박재정(Jae Jung Park),백승삼(Seung Sam Paik) 대한외과학회 2004 Annals of Surgical Treatment and Research(ASRT) Vol.66 No.6

가토 두개골에서 β-TCP와 자가골 이식에 관한 실험적 연구

이성훈(Sung-Hoon Lee),송승일(Seung-Il Song),한지영(Ji-Young Han),황경균(Kyung-Gyun Hwang),백승삼(Sung-Sam Paik),심광섭(Kwang-Sup Shim) 대한구강악안면외과학회 2004 대한구강악안면외과학회지 Vol.30 No.4

Pure-phase beta-tricalcium phosphate(β-TCP) proved to be a bone regeneration material, providing the patient with vital bone at the defect site in a reasonable time, making a second surgical procedure for bone harvesting unnecessary. This study compares bone healing and BMP 2/4 expression in cranial defects in rabbits grafted with autogenous bone and β-TCP. Thirty New Zealand White rabbits was divided into 3 group of 10 animals each. Bilateral calvarial defects were made in the parietal bones of each animal. β-TCP placed in one defect and the other defects was filled with autogenous bone. The animal were sacrificed at 4, 8 and 12 weeks. Immunohistochemical analysis was used to investigate the expression of BMP 2/4. 1. The new bone formation around autogenous bone from 4 weeks and β-TCP from 8 weeks. 2. In autogenous bone graft, BMP 2/4 expression was decreased from 4 to 12 weeks. 3. In β-TCP graft, BMP 4 expression was increased from 8 to 12 weeks. But, BMP 2 was observed from 12 weeks. This study showed that bone healing, regeneration and, BMP 2/4 expression are delayed in grafted β-TCP than autogenous bone

Bleomycin에 의한 경피증 동물모델 유도

이상구 ( Sang Koo Lee ),나영인 ( Young In Na ),장세민 ( Se Min Jang ),백승삼 ( Seung Sam Paik ),성윤경 ( Yoon Kyoung Sung ),전재범 ( Jae Bum Jun ) 대한류마티스학회 2009 대한류마티스학회지 Vol.16 No.2

Objective: To induce a mouse model of scleroderma with repeated bleomycin injections for research into human scleroderma at our research laboratory. Methods: The protocol of Yamamoto et al. was replicated to establish the bleomycin-induced mouse model of scleroderma. Results: A mouse model of scleroderma was induced by repeated subcutaneous injections of bleomycin. The dermal thickness increased with homogeneous and thickened collagen bundles. Semiquantitative measurements of dermal fibrosis were prominent in bleomycin-treated mice. Conclusion: A mouse model of scleroderma was induced with repeated injections of bleomycin at our laboratory.

말초 신경에 발생한 신경 내 결절종: 2예 보고

김태승,조영훈,백승삼,김성재,Kim, Tai-Seung,Jo, Young-Hoon,Paik, Seung-Sam,Kim, Sung-Jae 대한근골격종양학회 2013 대한골관절종양학회지 Vol.19 No.2

말초 신경에 발생하는 결절종은 일부 보고된 바는 있으나, 발생 빈도는 드문 것으로 되어있으며 발생 부위는 비골 신경이 가장 흔한 것으로 보고되고 있다. 이외에도 요골 신경, 척골 신경, 정중 신경, 좌골 신경, 경골 신경 및 후 골간신경에 발생한 경우도 보고되고 있다. 저자들은 내측 족저 신경에 발생한 신경 내 결절종 1예와 총 비골 신경에 발생한 신경 내 결절종 1예를 신경학적 후유증 없이 치료하여 이를 보고하고자 한다. Ganglion cysts that occurred within sheaths of peripheral nerves have been documented in literatures, but it is relatively rare condition. The peroneal nerve is the most common site of involvement. Other reported sites of involvement are the radial, ulnar, median, sciatic, tibial and posterior interosseous nerves. We report a case of the intraneual ganglion cyst within peroneal nerve and another case of the intraneural ganglion cyst within a medial plantar nerve that were successfully excised without neurologic complication.

증례 : 소화기; 십이지장 구부에 발생한 심재성 낭종성 장염에서 지방종을 동반한 1예

이대성 ( Dae Sung Lee ),정해룡 ( Hae Ryong Jeong ),김진옥 ( Jin Ok Kim ),태혜진 ( Hye Jin Tae ),최호순 ( Ho Soon Choi ),안혜인 ( Hye In Ahn ),백승삼 ( Seung Sam Paik ) 대한내과학회 2014 대한내과학회지 Vol.86 No.3

Enteritis cystica profunda (ECP) is a very rare hyperplastic benign lesion of the small intestine. Histologically, it is characterized by mucin-filled cystic spaces frequently lined by benign epithelium within the submucosa and muscularis propria. ECP occurs much less frequently than gastritis cystica profunda (GCP) or colitis cystica profunda (CCP). It is most often seen in adults with Crohn`s disease, Peutz-Jeghers syndrome, hamartomatous polyp, or congenital anomalies. We encountered a case of ECP (90 × 15 mm) accompanied by an elongated lipoma in the duodenal bulb, in the absence of any other disease. An endoscopic polypectomy proved sufficient for diagnosing and treating the ECP. To our knowledge, this is the first reported case of ECP accompanied by a lipoma in the duodenal bulb in the absence of any other intestinal disease.

근층 위암 세분류의 임상적 의미

김형주,권성준,한홍수,백승삼,Kim Hyoung-Ju,Kwon Sung Joon,Han Hong Xiu,Paik Seung Sam 대한위암학회 2005 대한위암학회지 Vol.5 No.2

목적: 일반적인 위암의 분류와 맞지 않게 고유근층까지 침범한 위암환자에서 몇몇 경우에는 조기위암의 그것과 유사하게 양호한 술 후 경과를 보이는 경우가 있다. 이에, 고유근층 침범도에 근거해서 고유근층 위선암으로 진단 받은 125예의 환자에 대한 후향적 분석을 시도하였다. 대상 및 방법: 125예의 고유근층 위암환자를 침윤도에 따라 세분류하여 전향적으로 임상병리학적 특징을 검토하고 222예의 점막하층 위암환자와 비교, 검토하였다. 각각의 환자에 대하여 100배 확대 시야에서 고유근층 내의 최대 심달도에 따라서 세분류하였다. 각 환자들은 심달도에 따라서 고유근층의 표층부 1/3까지만 침범한 경우를 mp1암, 그 이상으로 침범한 경우를 mp2암이라고 정의하였다. 결과: mp1암(n=50)인 환자는 mp2암(n=52)과 비교하여 림프절 전이율과 종양의 크기에서 통계적으로 유의하게 차이가 있었다(P=0.01,P=0.029). 5년 생존율에 있어서도 mp1암에서 mp2에서보다 통계적으로 유의하게 양호하였다($95.3\%\;vs.\;77.6\%$, P=0.0282). 림프절 전이가 없는 고유근층 암의 5년 생존율은 림프절 전이가 있는 경우보다 통계적으로 유의하게 양호하였다($93.3\%\;vs.\;78.2\%$, P=0.0192). 림프절 전이율에 있어서 mp1암은 점막하층암보다 유의하게 높았으나($42.5\%\;vs.\;23\%$, P=0.006) 5년 생존율에 있어서는 통계적으로 차이가 없었다. 결론: mp1암과 mp2암 사이에는 명확한 임상적 차이를 보였다. 고유근층암을 침윤도에 따라 세분류하는 것은 좀 더 정확한 예후 예측을 가능하게 할 수 있을 것이며 동시에 적절한 치료 계획을 세울 수 있을 것이다. 특히 mp1암의 임상병리학적 특징과 치료성적이 점막하층암의 그것과 유사하므로 점막하층암 환자에게 시행되는 것과 유사한 치료를 시행할 수 있을 것이다. Purpose: Some gastric cancer patients in whom the cancer has infiltrated up to the muscularis propria (mp) have a good postoperative course similar to that of early gastric cancer (EGC) patients (this does not match the general classification of gastric cancer). Therefore, we performed a retrospective analysis of 125 patients with mp gastric cancer based on the degree of mp invasion. Materials and Methods: The clinicopathologic features of 125 cases of mp gastric cancer were subdivided according to depth of invasion, and were retrospectively reviewed and compared with the surgical features of 222 patients with gastric cancer invading the submucosa (sm). For each tumor, using the section that showed the greatest extent of invasion, we evaluated the degree of tumor invasion into the mp layer at a magnification of $\times$100. The patients were classified into 2 groups: mp1, the tumor was limited to the first of the 3 mp layers, and mp2, the tumor had expanded beyond the first layer. Results: Patients with mp1 (n=50) had a significantly lower incidence of lymph node metastasis, and a smaller tumor size than patients with mp2 (n=75) (P=0.01 and P=0.029, respectively). The 5-year survival rate of mp1 patients was significantly better than that of mp2 patients ($95.3\%\;vs.\;77.6\%$, P=0.0282), but was similar to that ($91.2\%$) of the 222 sm patients. The 5-year survival rate of mp patients without lymph node metastasis (n=55) was significantly better than that of those with lymph node metastasis (n=70)($93.3\%\;vs.\;78.2\%$, P=0.0192). Patients with mp1 had a significantly higher incidence of lymph node metastasis ($42.5\%\;vs\;23\%$, P=0.006) than patients with sm. Conclusion: There were clear differences in clinical features between the mp1 and the mp2 patients. Subdivision of mp gastric cancer according to the depth of invasion may enable a more precise prognosis and a more pertinent treatment plan for mp patients. In particular, as the clinicopathological findings and surgical outcomes for mp1 patients were akin to those of the sm patients, mp1 patients may require treatment analogous to that administered to patients with sm gastric cancer. (J Korean Gastric Cancer Assoc 2005;5:101-105)

생분해성 고분자 담체를 이용한 태아 간세포의 이식

곽소정(So-Jung Gwak),최동호(Dongho Choi),백승삼(Seung Sam Paik),김상수(Sang-Soo Kim),최차용(Cha Yong Choi),김병수(Byung-Soo Kim) 한국생물공학회 2004 KSBB Journal Vol.19 No.3

신이식 환자에서 발생한 재발성 유방외 파제트병 1예

노영욱 ( Young Wook Roh ),황규식 ( Kyu Sig Hwang ),정명호 ( Myung Ho Jeong ),박준성 ( Joon Sung Park ),이창화 ( Chang Hwa Lee ),김근호 ( Gheun Ho Kim ),백승삼 ( Seung Sam Paik ),김정태 ( Jeong Tae Kim ),강종명 ( Chong Myung Kan 대한신장학회 2009 Kidney Research and Clinical Practice Vol.28 No.6

The incidence of malignant disease increases in kidney transplant recipients taking immunosuppressive therapy. Extramammary Paget`s disease, a very rare dermatologic malignancy, is characterized by frequent recurrences and coexistence with other malignancies. Although skin cancer is the most common malignancy occurring after kidney transplantation, extramammary Paget`s disease has not been reported in Korea. In this paper, we report a case of recurrent extramammary Paget`s disease after renal transplantation. A 66-year old man, who underwent renal transplantation from a living unrelated donor 15 years ago, was diagnosed to have extramammary Paget`s disease 7 years ago. At this admission he was troubled with a pruritic skin lesion in his suprapubic area which previously occurred twice. The recurring Paget`s disease was treated with radical resection and coverage. No further recurrences have been developed during the following 12 months until now.