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박재범,채호준,김유삼,Park, Jae-Bum,Chae, Ho-Zoon,Kim, Yu-Sam 생화학분자생물학회 1986 한국생화학회지 Vol.19 No.3
Malonate를 유일한 탄소 및 에너지원으로 이용하는 배지에서 Acinetobacter calcoaceticus를 배양했을 때 malate synthase가 유도된다는 사실을 확인하였다. 이 미생물로부터 DEAE-Sephacel ion exchange chromatography, oxalate-Sepharose 4B affinity chromatography, hydroxyapatite chromatography를 이용하여 malate synthase를 분리 정제하였고, disc polyacrylamide gel electrophoresis를 수행한 결과 하나의 단백질 띠로 나타났다. 그 최적 pH는 8.0이였으며, 정제한 malate synthase가 관여하는 반응은 기질인 glyoxylate나 acetyl CoA에 대해 전형적인 Michaelis-Menten kinetics에 부합했다 Lineweaver-Burk plot을 이용하여 $K_m$과 $V_{max}$를 정한 결과 acetyl CoA에 대해서는 $1.5{\times}10^{-5}\;M$과 $1\;{\mu}mol/min/mg$ protein이였고 glyoxylate에 대해서는 $3.5{\times}10^{-5}\;M$과 $0.8\;{\mu}mol/min/mg$ protein 이었다. Oxalate와 glyoxylate는 competitive inhibitor였으며 $K_i$ 값은 각각 $4{\times}10^{-5}\;M$, $1.4{\times}10^{-4}\;M$이었다. Pyruvate, succinate, malonate 그리고 tartrate도 효소활성을 억제하였다. Pseudomonas fluorescens의 malate synthase를 항원으로 하여 만들어진 항체는 Acinetobacter calcoaceticus 의 malate synthase활성을 저해 하지 않았다. 이러한 사실로 미루어 분류상 유사한 두 미생물의 malate synthase는 면역학적으로 많은 차이가 있음을 알았다. Malate synthase (EC 4.1.3.2) was induced in Acinetobacter calcoaceticus grown on malonate as a sole carbon source. The enzyme was purified by the combined methods of DEAE-Sephacel anion exchange chromatography, oxalate Sepharose 4B affinity chromatography and hydroxyapatite chromatography in an electrophoretically homogeneous form. The molecular size of the enzyme was estimated to be 75,000 dalton consisted of a single polypeptide. Optimum pH for the enzyme was about 8.0. The rate of acetyl group incorporation on variable concentraions of the substrate into malate was well fitted to a typical Michaelis-Menten kinetics. From the Lineweaver-Burk plot, $K_m$ and $V_{max}$ for acetyl-CoA were $1.5{\times}10^{-5}\;M$ and $1\;{\mu}mol/min/mg$ respectively and those for glyoxylate were $3.5{\times}10^{-5}\;M$ and $0.8\;{\mu}mol/min/mg$ respectively. The activity of this enzyme was inhibited by oxalate with $K_i$, $4{\times}10^{-5}\;M$ and by glycolate with $K_i$, $1.4{\times}10^{-4}\;M$ competitively. Pyruvate, succinate, malonate and tartrate also inhibited the enzyme activity. Antibody prepared against malate synthase from Pseudomonas fluorescens did not cross-react with the enzyme from Acinetobacter, suggesting that the enzyme isolated from two different bacteria are immunologocally different.
박재범,안상헌,정수일,조병완,안재진,Park, Jae-Bum,Ahn, Sang-Hun,Cheung, Soo-Il,Jo, Byung-Woan,Ahn, Jae-Jin 대한악안면성형재건외과학회 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.1
The most critical factor in determining which type of implant to be used would be the available bone of the patient. Usually a minimum of 5mm in the bone width and 8mm in the bone height is necessary to ensure primary implant stability and maintain the integrity of bone contact surface. Placement of implant is limited by the several anatomic strutures such as maxillary sinus, floor of the nose, inferior alveolar neurovascular bundle and nasopalatine foramen, etc. When severe resorption of alveolar ridge is encountered, implant placement would be a problematic procedure. A number of techniques to improve the poor anatomic situations have been proposed. This article reports 4 cases of patients using surgical procedures such as blade implant technique, cortical split technique in the anterior maxillary area, sinus lifting and lateral repositioning of inferior alveolar nerve, We treated dental implant candidates with unfavorable alveolar ridge utilizing various surgical techniques, resulted in successful rehabilitation of edentulous ridge.
박재범 ( Jae Bum Park ),권중구 ( Joong Goo Kwon ),오재영 ( Jae Young Oh ),한지민 ( Ji Min Han ),정진태 ( Jin Tae Jung ),김은영 ( Eun Young Kim ),김호각 ( Ho Gak Kim ),류헌모 ( Hun Mo Ryoo ),채현동 ( Hyun Dong Chae ),조창호 ( Chang 대한장연구학회 2012 Intestinal Research Vol.10 No.3
Mantle cell lymphoma (MCL) is a subtype of B-cell non-Hodgkin`s lymphoma (NHL), accounting for 3-10% of NHL. MCL involves the gastrointestinal (GI) tract in 10-30% of patients and common sites of MCL GI tract involvement are the colorectum and stomach, but any region of the GI tract may be involved. GI tract involvement by MCL usually presents in the form of multiple lymphomatous polyposis involving several segments of the GI tract. A few cases of MCL presenting with a GI tract stricture have been reported. Here, we present a rare case of a small intestinal stricture caused by MCL and review the literature of this disease. (Intest Res 2012;10:300-304)
박재범(Jae-Bum Park),정홍준(Hong Jun Jung),안태수(Tae Soo Ahn),전재명(Jae Myeung Chun) 대한정형외과학회 2011 대한정형외과학회지 Vol.46 No.1
목적: 회전근 개 봉합술 후에 시행한 자기공명영상 검사 상 확인된 지방변성의 진행이 임상적 결과에 미치는 영향에 대해 연구하였다. 대상 및 방법: 수술 후 1년에 시행한 자기공명영상 검사 상 지방변성이 진행한 25예를 대상으로 하였고 임상적 평가를 위해서 American shoulder and elbow surgeon (ASES) 점수 및 수정된 Constant 점수를 사용하였다. 결과: ASES 점수는 수술 전에는 평균 57.76±17.0, 수술 후 1년에는 평균 84.8±11.9, 최종 추시상 92.7±7.7로 유의한 호전을 보였으며, Constant 점수도 수술 전에는 평균 56.2±2, 수술 후 1년에는 78.2±11.7, 최종 추시상 83.1±7.9로 유의한 호전을 보였다. 1예를 제외한 전 예에서 만족스러운 결과를 보였다. 최종 추시 상, 재파열이 발생했던 군, 파열의 크기가 큰 군, 극하근의 지방변성이 진행하였던 군에서 그렇지 않은 군에 비해 더 낮은 임상적 성적을 보였다. 결론: 자기공명영상 검사 상 지방변성이 진행한 경우도 평균 37.4개월의 추시관찰 결과 96%에서 만족스러운 결과를 보였다. 따라서 회전근 개 봉합술 후 추시 1년에 관찰되는 자기공명영상 소견상의 진행된 지방변성은 최종적 임상 결과에 부정적 영향을 끼치지 않는 것으로 판단된다. Purpose: To evaluate the influence of progressive fatty degeneration of the rotator cuff (shown on MRI after rotator cuff repair) on the clinical outcome. Materials and Methods: At one-year postoperatively, 25 patients with progressive fatty degeneration on MRI were evaluated using the American Shoulder and Elbow Surgeon Standardized Assessment Form (ASES) score and the Constant score. Results: Average ASES scores were 57.76±17.0 preoperatively, and had significantly increased to 84.8±11.9 at 1-year postoperatively, and to 92.7±7.7 at final follow up. Average Constant scores were 56.2±2 preoperatively, and had increased significantly to 78.2±11.7 at 1-year after surgery, and to 83.1±7.9 at final follow-up. All cases except 1 showed satisfactory results. Groups that showed retears, large tears or fatty degeneration on infraspinatus showed inferior results to those without these developments. Conclusion: On average 37.4 months of follow-up, clinical outcomes had improved in 96% of patients with progressive fatty degeneration of the rotator cuff. Therefore, progressive fatty degeneration on MRI at 1 year after rotator cuff repair does not influence final clinical results.
박재범(Jae Bum Park),정수일(Soo Il Jung),안상헌(Sang Hun Ahn),김도균(Doe Gyeun Kim),안재진(Jae Jin Ahn) 대한구강악안면외과학회 1997 대한구강악안면외과학회지 Vol.23 No.4
The face and notably the lips are important structures not only of aestheticvalue but also for expression, vibrancy and vitality. Sometimes we are encountered with the functional and aesthtetic lip problems especially in the patients with mandibular prognathism, such as excessive vermilion exposure, lip incompetence and hyperactivity of mentalis muscle. The etiologic factors are usually related to excessive anterior facial height, secondary to the abnormal development of perioral muscle, salivary gland and the swelling of lymphatic gland. Sometimes orthognathic surgery (mandibular setback osteotomy) alone is not accepted regarding to aesthetic value, there is likely to be a corresponding interest in adjunctive procedures such as genioplasty and soft tissue procedures. This article urges the incorporation of reduction cheiloplasty. It is a relatively minor procedure that can be easily reproducible and yields excellent, predictatable results with few complications. We treated two patients who have excessive vermilion exposure and marked abnormal lip eversion using reduction cheiloplasty combined with mandibular setback osteotomy, followed by improved facial harmony and patients were pleased.