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폴리(글리시딜 메타크릴레이트)가 그래프트된 다중벽 탄소나노튜브에 다양한 아민 그룹의 도입과 바이오센서 지지체로서의 응용
정다정(Da Jung Chung),김기출(Ki Chul Kim),최성호(Seong Ho Choi) 한국고분자학회 2012 폴리머 Vol.36 No.4
다양한 아민 그룹으로 개질된 다중벽 탄소나노튜브(이하 MWNT) 지지체를 기반으로 하여 페놀 화합물을 검 출하기 위한 티로시나아제가 고정된 바이오센서를 개발하였다. 방사선 중합법을 이용하여 MWNT에 글리시딜메타 크릴레이트를 중합한 후 중합 사슬의 아미노화 반응을 통해 MWNT에 다양한 아민 그룹을 도입시켰다. 이렇게 제조된 물질의 물리적, 화학적 특성은 SEM, XPS 그리고 TGA에 의해 평가되었다. 그리고 제조된 물질을 기반으로 제작된 티로시나아제가 고정화된 바이오센서의 전기화학적 특성도 평가하였다. 본 효소 바이오센서는 0.1-0.9mM의 페놀을 검출할 수 있다. 결합효과, pH, 온도 그리고 다양한 페놀화합물에 대한 반응과 같은 여러 가지 변수에 대하여도 최적화하였고 상용 레드와인에서의 페놀화합물 검출도 연구하였다. A tyrosinase-immobilized biosensor was developed based on various amine-modified multi-walled carbon nanotube (MWNT) supports for the detection of phenolic compounds. MWNTs with various amine groups were prepared by radiation-induced graft polymerization of glycidyl methacrylate (GMA) onto MWNT supports and the subsequent amination of poly (GMA) graft chains. The physical and chemical properties of the poly (GMA)-grafted MWNT supports and the aminated MWNT supports were investigated by SEM, XPS, and TGA. Furthermore, the electrochemical properties of the prepared tyrosinase-modified biosensor based on MWNT supports with amine groups were also investigated. The response of the enzymatic biosensor was in the range of 0.1-0.9mM for the concentration of phenol in a phosphate buffer solution. Various parameters influencing biosensor performance have been optimized: binder effects, pH, temperature, and the response to various phenolic compounds. The biosensor was tested on phenolic compounds contained in two different commercial red wines.
신이식 후에 발생한 이상자궁출혈 환자에서 시행한 자궁경하 자궁내막 절제술의 효과에 관한 연구
정다정 ( Da Jung Chung ),박기현 ( Ki Hyun Park ),정경아 ( Kyung Ah Jeong ),신종승 ( Jong Seung Shin ),배상욱 ( Sang Wook Bai ),이병석 ( Byung Seok Lee ),조동제 ( Dong Jae Cho ),송찬호 ( Chan Ho Song ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.6
Objective : To assess the effectiveness and safety of hysteroscopic endometrial ablation as a surgical management of abnormal uterine bleeding developed in renal transplant patients. Methods : Data were collected retrospectively from 62 patients referred
복압성 요실금 수술시 tension-free vaginal tape의 치료 성적; 요도 괄약근 부전증 환자와 비요도 괄약근 부전증 환자의 비교
정여화 ( Yeo Hwa Jung ),전명재 ( Myung Jae Jeon ),정다정 ( Da Jung Chung ),박주현 ( Joo Hyun Park ),김세광 ( Sei Kwang Kim ),김재욱 ( Jae Wook Kim ),배상욱 ( Sang Wook Bai ) 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.2
Objective: The object of this study is to compare treatment outcomes of tension free vaginal tape (TVT) for intrinsic sphincter deficiency (ISD) and non-intrinsic sphincter deficiency (NISD) patients in stress urinary incontinence (SUI), and to evaluate whether TVT can be effectively used in both groups of SUI patients. Methods: 111 women with SUI treated by TVT at the Department of Obstetrics and Gynecology, Division of Female Pelvic Medicine and Reconstructive Surgery, the Yonsei Medical Center from Jun. 2003 to Jun. 2005 were included in this study. The patients were divided into two groups; 31 patients with ISD, and 80 patients with NISD. SUI was diagnosed according to the result of urodynamic tests. Urodynamic studies (UDS) include uroflowmetry, multi-channel cystometry and urethral pressure profilometry. The Patients were followed up at 1, 3, 6, and 12 months postoperatively, and those with any follow-up loss were excluded from this study. Results: There were no significant differences found in demographics between ISD and NISD groups; mean age, parity, BMI, menopausal status and HRT (P>0.05). Maximum urethral closure pressure (MUCP)(46.8124.29 vs.75.7±32.61 cmH2O; P<.0001) and Vasalva leak-point pressure (VLPP)(53.48±10.12 vs 107.23±42.95 cmH2O; P<0.0001) showed significant difference between the two groups. However, other parameters of UDS except MUCP and VLPP showed no statistical difference. The cure rates of the two groups at 1 month follow up (87.0% vs 100%; p=0.0053) showed significant difference. No significant differences were found at 3, 6 and 12 months. There were no differences in postoperative complication rate (voiding difficulty, de novo urgency, urinary tract infection) between two groups irrespective of follow-up months. Conclusion: Tension-free vaginal tape is effective for stress urinary incontinence in both ISD and NISD patients.
여성 요도 및 방광 평활 근종: 증례 5예 및 문헌적 고찰
정현주 ( Hyun Joo Jung ),이상희 ( Sang Hee Lee ),정다정 ( Da Jung Chung ),전명재 ( Myong Jae Jeon ),박주현 ( Ju Hyun Park ),김세광 ( Sei Kwang Kim ),김재욱 ( Jae Wook Kim ),배상욱 ( Sang Wook Bai ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.8
Objective: Leiomyomas of the bladder and urethra in women is very rare. We present five cases of histologically proven the female urethral and bladder leiomyomas identified over a 15-years period at our institution, together with review of the literature focused on the symptom and proper management. Methods: Five women pathologically confirmed bladder or urethral leiomyoma were reviewed by the medical record, retrospectively. Results: One patient with bladder leiomyoma was asymptomatic, but four patients with urethral leiomyoma had a palpable mass on physical examination. The leiomyomas posited laterally were less symptomatic than other leiomyomas posited medially, and the symptoms were especially obstructive ones. All of them were removed by excision, and any complication or recurrence was not occurred. Conclusion: Leiomyomas of the bladder and urethra are rare and associated with variable symptoms depending on their locations and sizes. It is not necessary immediate operation except to excessive bleeding or acute complete obstruction. Complete excision followed by histological examination is the most reliable means of distinguishing leiomyoma from other more common and usually malignant tumors of the genitourinary tract.
방광탈 교정에 있어서 전질벽 협축술, prolene mesh를 이용한 전질벽 협축술과 복식 전질벽 협축술에 따른 수술 성적의 비교
정현주 ( Hyun Joo Jung ),전명재 ( Myung Jae Jeon ),정다정 ( Da Jung Chung ),박주현 ( Joo Hyun Park ),김세광 ( Sei Kwang Kim ),김재욱 ( Jae Wook Kim ),배상욱 ( Sang Wook Bai ) 대한산부인과학회 2007 Obstetrics & Gynecology Science Vol.50 No.2
Objective: As for the method of surgical correlation of the central type of anterior vaginal wall defects, there are anterior repair, anterior repair with prolene mesh, and internal anterior repair. The object of this study was to compare the recurrence rates, complications and the clinical efficacy of the three surgical procedures. Methods: We identified one hundred and thirty-eight patients who underwent operations for the central type of anterior vaginal wall defects from March 1999 to May 2005. We retrospectively collected data from the medical records and reviewed the outcomes. We investigated the characteristics of patients, recurrence rates and complication rates for the results, and compared them by ANOVA test and Kruskal-Wallis test. Results: The number of cases of anterior repair, anterior repair with the mesh, and internal anterior repair were seventy-two, twenty-eight and thirty-eight consecutively. There was no significant difference in the characteristics of age, menopause status, parity, BMI (Body mass index) and history of pelvic surgery and the medico-surgical illness among the three groups. There were statistically no significant differences in fever, vaginal erosion, detrusor overactivity and voiding difficulty after the operations. The incidence of the postoperative urinary tract infections was increased significantly in the group of the anterior repair with prolene mesh (p=0.018), and drop in hemoglobin, operation time and wound infection were increased significantly in the group of the internal anterior repair (p=0.0001, 0.004 and p=0.028). The recurrence rate of the disease was significantly higher in internal anterior repair group than in anterior repair or anterior repair with the mesh groups (18.4% vs. 1.4% and 0%). The recurrence rate was increased in proportion to the duration after the surgery. Conclusion: The recurrence rate of the disease after internal anterior repair was significantly higher than when anterior repair or anterior repair with the mesh was done. As for the complications, urinary tract infection was increased after the anterior repair with prolene mesh and drop in hemoglobin and wound infection were increased after the internal anterior repair. We concluded that the conventional anterior repair is more suitable method for the correction of the central type of anterior vaginal wall defects than anterior repair with mesh and internal anterior repair.