Production of the Rare Ginsenoside Rh2-MIX (20(S)-Rh2, 20(R)-Rh2, Rk2, and Rh3) by Enzymatic Conversion Combined with Acid Treatment and Evaluation of Its Anti-Cancer Activity

( Bong-kyu Song ),( Kyeng Min Kim ),( Kang-duk Choi ),( Wan-taek Im ) 한국미생물생명공학회(구 한국산업미생물학회) 2017 Journal of microbiology and biotechnology Vol.27 No.7

The ginsenoside Rh2 has strong anti-cancer, anti-inflammatory, and anti-diabetic effects. However, the application of ginsenoside Rh2 is restricted because of the small amounts found in Korean white and red ginsengs. To enhance the production of ginsenoside Rh2-MIX (comprising 20(S)-Rh2, 20(R)-Rh2, Rk2, and Rh3 as a 10-g unit) with high specificity, yield, and purity, a new combination of enzymatic conversion using the commercial enzyme Viscozyme L followed by acid treatment was developed. Viscozyme L treatment at pH 5.0 and 50°C was used initially to transform the major ginsenosides Rb1, Rb2, Rc, and Rd into ginsenoside F2, followed by acid-heat treatment using citric acid 2% (w/v) at pH 2.0 and 121°C for 15 min. Scale-up production in a 10-L jar fermenter, using 60 g of the protopanaxadiol-type ginsenoside mixture from ginseng roots, produced 24 g of ginsenoside Rh2-MIX. Using 2 g of Rh2-MIX, 131 mg of 20(S)-Rh2, 58 mg of 20(R)-Rh2, 47 mg of Rk2, and 26 mg of Rh3 were obtained at over 98% chromatographic purity. Then, the anti-cancer effect of the four purified ginsenosides was investigated on B16F10, MDA-MB-231, and HuH-7 cell lines. As a result, these four rare ginsenosides markedly inhibited the growth of the cancer cell lines. These results suggested that rare ginsenoside Rh2-MIX could be exploited to prepare an anti-cancer supplement in the functional food and pharmaceutical industries.

Hot Plate장치를 이용한 TTD사 제조조건에 따른 사의 물성변화 연구

송민규,김희동,권오경 한국의류산업학회 2005 한국의류산업학회지 Vol.7 No.2

In this the study, the effects of the manufacturing process conditions on the properties Thick and Thin Diameter yarns(TTD yarns) prepared with hot plate device in the draw winder were determined. Physical properties including wet shrinkage, tenacity and elongation of the samples were measured and thick and thin effect was analysed with the evenness tester. The results were as the follows: There was little change the wet shrinkage of the TTD yarns in the range of 70°C- 80°C of R1 temperature(lower hot cylinder) with the same Hot Plate(H,P) temperature, but thc wet shrinkage of the TTIl yarns decreased 5-10% when RI temperature was 90°C. The wet shrinkage of the TTD yams decreased with the H/P temperature at the same temperature of R1, There was little effect of R1 and H/P temperature on the tenacity of TTD yarns. The elongation of TTD yarns increased with RL temperature at the same I-VP temperature. The elongation of TTD yarns increased little bit for the first time and then decreased above that temperature with increasing H/P temperature at the same R1 temper<ature. The thick and thin effect on the TTD yarns was obvious in 110°C of H/P temperature regardless of R1 temperature, while there was no thick and thin effect on the TTD yarns in 1 40°C of HiP temperature.

국내의 Acinetobacter baumannii와 Pseudomonas aeruginosa 임상분리주에 대한 Colistin과 Polymyxin B의 감수성 양상

송원근,이태재,박민정,김한성,김재석,우흥정,이규만 대한감염학회 2006 감염과 화학요법 Vol.38 No.6

배경 : 다약제 내성 Acinetobacter baumannii와 Pseudomonas aeruginosa에 의한 감염의 증가로 인해 기존의 치료제를 대신할 수 있는 colistin이나 polymyxin B와 같은 대체 항균제들이 사용되고 있다. 이에 국내에서 분리된 A. baumannii와 P. aeruginosa에 대한 colistin과 polymyxin B의 감수성 현황을 알아보고자 하였다. 재료 및 방법 : 국내 5개 대학병원에서 분리된 균주 중 ceftazidime과 imipenem의 감수성에 따라 93주의 A. baumannii와 99주의 P. aeruginosa를 선택하였다. 액체배지 미량희석법으로 colistin과 polymyxin B의 감수성을 시험하였다. 결과 : Ceftazidime과 imipenem이 감수성인 균주에서는 기타 β-lactam제, aminoglycoside제 및 ciprofloxacin에 대한 감수성율(각각 58-100%, 50-100%, 75-100%)이 높았으나, ceftazidime 또는 imipenem이 내성인 균주에서는 위의 항균제에 대한 감수성율이(각각 ≤31%, ≤47%, ≤18%)이 낮았다(P<0.05). Colistin과 polymyxin B에 대한 A baumannii (MIC_(50/90), 1/2 ㎍/mL)와 P. aeruginosa(MIC_(50/90), 1/1 ㎍/mL)에의 항균 범위는 거의 유사하였고 두 약제 모두 매우 우수한 항균력을 보였다. A. baumannii에서는 1주(1.1%)가 colistin 내성(MIC, 4 ㎍/ mL)이 었으나 polymyxin B에는 감수성(MIC, 2 ㎍/mL)이었으며 이외의 모든 A. baumannii와 P. aeruginosa는 colistin과 polymyxin B에 감수성(MIC, ≤2 ㎍/mL)이었다. 결론 : 국내에서 colistin과 polymyxin B에 둘 다 내성인 A. baumannii나 P. aeruginosa 감염은 없었다. 따라서polymyxin제를 다약제 내성 A. baumannii나 P. aeruginosa 감염에 대한 대체 항균제로 유용하게 사용할 수 있을 것으로 생각된다. Background : The emergence of multidrug-resistant Acinetobacter baumannii and Pseudomonas aeruginosa has become a major problem. The use of nontraditional agents such as colistin and polymyxin B have been tried. The purpose of this study was to evaluate the colistin and polymyxin B susceptibility of A. baumannii and P. aeruginosa isolates in Korea. Materials and Methods : According to susceptibility of ceftazidime and imipenem, selected 93 isolates of A. baumannii and 99 isolates of P. aeruginosa were collected from 5 university hospitals in Korea. Susceptibility to colistin and polymyxin B was tested using the reference broth microdilution method. Results : The rates of other β-lactams, aminoglycosides, and ciprofloxacin susceptibility were high (58-100%, 50-100%, and 75-100%, respectively) in ceftazidime- and imipenem-susceptible isolates but were low (≤31%, ≤47%, and ≤18%, respectively) in ceftazidime- or imipenem-resistant isolates (P<0.05). Colistin and polymyxin B displayed a nearly identical spectrum of activity, exhibiting excellent potency against A. baumannii (MIC_(50/90), 1/2 ㎍/mL) and P. aeruginosa (MIC_(50/90), 1/1 ㎍/mL). Only one of the A. baumannii isolates was resistant to colistin (MIC, 4 ㎍/mL), but the isolate was susceptible to polymyxin B (MIC, 2 ㎍/mL). Conclusion : In Korea, no A. baumannii and P. aeruginosa isolates were resistant to both colistin and polymyxin B. These data suggested that polymyxins may be alternative drugs for multidrug- resistant A. baumannii and P. aeruginosa isolates.

급성 충수염으로 진단된 예측 불가 염증성 맹장 종물에 대한 외과적 고찰

민경진,백무준,채만규,김성용,이문수,김창호,김재준,송옥평 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Purpose: An unexpected inflammatory cecal mass of uncertain etiology was encountered during surgery for presumed appendicitis. In this case, the surgeon couldn't exclude differential diagnosis which were severe appendicitis involving the cecal region, diverticular disease, other inflammatory bowel diseases, and neoplasm. Therefore, this finding leads to a therapeutic dilemma for the surgeon, when making surgical decisions during the operation. The aim of this study was to resolve this dilemma, a retrospective review was undertaken in this study. Methods: A retrospective study was performed to review the management of this problem at Soonchunhyang University Chunan Hospital for eight and half years from July 1991 to December 1999. A review of the emergency operation records identified 50 patients who had undergone ileocecal resection or right hemicolectomy for an inflammatory ileocecal mass of uncertain etiology when operated on for probable appendicitis. Results: Altogether, 39 patients underwent ileocecal resection, and 11 patients underwent right hemicolectomy. The final pathologic diagnosis was appendiceal abscess in 32 patients (63%), cecal diverticulitis in 7 patients (14%), neoplasm in 6 patients (12%), appendiceal phlegmon in 3 patients (6%), ileal tuberculosis in 1 patient (2%) and Anisakiasis in another patient (2%). The neoplasm of the 6 neoplasm patients was ascending colon cancer for 4 patients and cecal cancer for 2 patients. There was no mortality in this group. Conclusion: Although most inflammatory cecal masses are caused by benign disease, all cases in which the intraoperative diagnosis is unclear, any pathologic diagnosis including neoplasm cannot be ruled out. So this suggest ileocecal resection or right hemicolectomy to remove a possible underlying malignancy, and to decrease morbidity and mortality.

생체분해성 안과제형의 안구내흡수정도와 안독성

민병무,김용백,박근성,송규상,양준묵,이성복,조항진,길숙종,김승영,김학용 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

An improved retinal tack can be used to fix the retina in complicated retinal detachment and proliferative vitreoretinopathy. We used the retinal tack made by biodegradable polyglycolic acid, polylactic acid and copolymers. The tacks with polyglycolic acid were placed in the retina the right eyes of 10 rabbits as group 1, with polylactic-polyglycolic acid copolymers as group 2 in each left eyes. We examined the absorption rates and degree of intraocular inflammation at 1 day, 1, 2, 4, and 8 weeks and compared both eyes. The tacks were absorbed with time in both eyes, but more rapid in copolymers. And there was no inflammation in both eyes. Now, this study will be a base on the drug delivery system in intraocular pharmacological and surgical management.

악교정 수술 후 하악과두의 위치 및 골변화에 관한 단층방사선학적 연구

송남규,김민숙,고광준 全北大學校 齒醫學硏究所 1992 전북치대논문집 Vol.10 No.1

The purpose of this study was to aid in the evaluation of prognosis of temporomandibular joint following orthognathic surgery. For this study, 20 patients(40 TMJ) who had undergone orthognathic surgery were examined. Preoperative and postoperative tomograms of TMJ were taken. And the subjects were divided into 3 groups according to postoperative periods. The results were as follows ; 1. There were no significant differences between preoperative and postoperative changes in joint spaces in each group and between groups(P<0.05). 2. There were no significant differences between preoperative and postoperative ratio of joint space(P<0.05). 3. There were no significant differences between preoperative and postoperative changes in the range of motion of condylar head(P<0.05). 4. The bony changes of condylar head were observed in 14(35% ) condyles(6 erosion, 2 flattening, 5 double contour, 1 osteophyte).

부신 결핵에 의한 Addison씨병 1예

송치운,구본정,안봉수,전준식,안미애,이진홍,송민호,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.2

Addison's disease is a rare primary adrenal insufficient disorder resulting from chronic deficiency of adrenal cortical hormones. Clinical manefestations are generalized weakenss, weight loss, hyperpigmentation (especially sun exposed area and mucous membrane), hypotension, hyponatremia, hyperkalemia, gastrointestinal symptoms (involving anorexia, nausea, vomiting, abdominal pain). A 34-year-old woman has experienced slowly progressive generalized weakenss and skin pigmentation, anorexia, nausea, vomiting with ascites and diffuse abdominal pain. On the time of admission, her main clinical manifestations were anorexia, nausea, vomiting, fatigue, generalized weakness, amenorrhea, hair loss, diffuse abdominal pain revealed as Addison's disease due to bilateral adrenal tuberculosis. Her adrenal insufficient symptoms were recovered with the replacement of adrenocortical hormones and antituberculous medications. After treatment, Her skin pigmentation was decreased and menstruation was reappeared. Here we experienced one cases of Addison's disease with tuberculous peritonitis.

생체분해성 고분자를 이용한 사시수술용 제형개발 및 효용성에 대한 연구

민병무,김용백,김승영,김창식,박근성,길숙종,조항진,이성복,노승무,송규상,강대영,조준식,양준묵,정경수,최선웅,이진호,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

A new device, muscle clamping system was developed to facilitate exact quatifying technique A strabismus surgery, and reduce the risk of complications. The device is composed of a lower fixing body with three jaws and an upper supporting body. They are used to clip an extraocular muscle and fix it to the sclera with a single bite. Superior rectus recession on 16 rabbit eyes were performed with this new device. Conjunctival injection, muscle adhesion strength, and light microscopic findings were examined at 1, 2, 4 and 8 weeks postoperatively. The Conjunctival injection were minimal, adhesion power ranged from 420 to 600 gram gravity, which is sufficient in withstand the normal pull of human extraocular muscle. In microscopic exam, some Inflammatory cells and fibrosis were found. The new device was technically easy, fast, and accurate, so it may be useful in stabismus surgery.

악교정 수술 후 하악과두의 위치 및 골변화에 관한 단층방사선학적 연구

송남규,고광준,김민숙 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

The purpose of this study was to aid in the evaluation of prognosis of temporomandibular joint following orthognathic surgery. For this study, 20 patients(40 TMJ) who undergone orthognathic surgery were examined. Preoperative and postoperative tomograms of TMJ were taken. And the subjects were divided into 3 groups according to postoperative periods. The obtained results were as follows ; 1. There were no significant differences between preoperative and postoperative changes in joint spaces in each group and between groups(p<0.05). 2. There were no significant differences between preoperative and postoperative ratio of joint space(p<0.05). 3. There were no significant differences between preoperative and postoperative changes in the range of motion of condylar head(p<0.05). 4. The bony changes of condylar head were observed in 14(35%) condyles(6 erosion, 2 flattening, 5 double contour, 1 osteophyte).

혈액투석중인 만성신부전 환자에서 골대사 지표로써의 Osteocalcin치

송치운,이진홍,안미애,윤환중,윤상임,성기양,이강현,송민호,이강욱,신영태,김영건,노흥규 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

Background : Serum osteocalcin is synthesized by osteoblast and has been shown to be sensitive indicator of bone turnover inpatients with various metabolic bone disease. In renal osteodystrophy, serum osteocalcin is elevated due to decreased renal clearance and elevated level of PTH. This study was done to evaluate the usefulness of serum osteocalcin as a marker of bone metabolism and the correlation with other biochemical markers of bone metabolism. Methods : We measured serum osteocalcin, calcium, phosphorus, ALP(alkaline phosphatase) and PTH(parathyroid hormone) in 37 patients with end stage renal disease on hemodialysis. Osteocalcin was determined by radioimmunoassay and PTH was determined by radioimmunometric assay. Results : 1) The mean level of serum osteocalcin in ESRD patients was 233.8± 218.2ng/ml which was significantly higher than that of controls(p<0.0001). 2) The mean level of serum PTH in ESRD patients was 40.5± 43.8pg/ml was significantly higher than that of controls(p<0.005). 3) There was a significant positive correlation between the level of serum PTH, ALP and the level of serum osteocalcin in ESRD patients. 4) By using multiple regression, PTH is most reliable factor that affect to elevated level of serum osteocalcin ( beta coefficient = 0.687, Sig T<0.05). Conclusion : Serum osteocalcin as a marker of bone metabolism in ESRD patients is more useful than other biochemical marker such as serum calcium, phosphorus, ALP and PTH is a most reliable factor that affect to elevated level of serum osteocalin.