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위암세포주에서 Recombinant Human Interferon-r와 Adriamycin의 투여순서가 항암효과에 미치는 영향
홍원선,손영숙,김창민,강윤구,이춘택,김유철,임영혁,남현석,이진오,강태웅 大韓免疫學會 1993 大韓免疫學會誌 Vol.15 No.-
Numerous previous studies, both in vitro and in vivo, have demonstrated that the cytotoxicity can be enhanced by the combination of chemotherapeutic agent and interferons(IFNs) in various types of cancer cells. We have previously reported that combined treatment of MKN-45, human gastric adenocarcinoma cells, with adriamycin(ADM) and recombinant human interferon-r(rh-IFN-r) increased in the cytotoxicity. In this study, the effects of combination timing of rh-IFN-r and ADM on the cytotoxicity against MKN-45 were investigated using MTT assay. MKN-45 was treated with rh-IFN-r and ADM in vitro on three schedules : Treat A ; rh-IFN-r and ADM were treated simultaneously, Treat B ; rh-IFN-r was treated 24 hours after the treatment with ADM, Treat C ; rh-IFN-r was treated for 72 hours and followed by the treatment with ADM. The survival of MKN -45 was inhibited by ADM dose-dependently. 102 and 103U/ml of rh-IFN-r significantly inhibited the survival of MKN-45(% survival : 35.1 ±-1.2% and 34.4 ±1.1% in Treat A and 42.5 ± 2.1% and 45.9-±2.5% in Treat C, respectively). However no difference in the survival was observed between 102 and 103U/ml of rh-IFN-r. Combined treatment with rh-IFN-r and ADM significantly augmented the cytotoxicity at low concentrations of ADM. Combined effects of rh-IFN-r and ADM were evaluated using IC30(,ag/ml) to ADM. IC30s of MKN-45 in Treat A, B and C at 102 U/ml of rh -IFN-r _ were 0.019 -?- 0.003, 0.045 :I:0.001 and 0.054 ± 0.012, respectively, while IC30 of MKN-45 treated with ADM alone was 0.052±0.004. IC30s of MKN-45 in ADM alone group, Treat A, Treat B and Treat C at 103U/ml of rh-IFN-r were 0.047 ±0.003, 0.004 -±0.001, 0.031 ±0.004 and 0.056 0.008, respectively. These results indicate IC30s of Treat A and B were significantly lower than those of ADM alone(p<0.05) and IC30s of Treat A was significantly lower than those of Treat B(p <0.01). IC30s of Treat C, however, were not different from those of ADM alone. From these results demonstrating that cytotoxic effects were increased by the combination of rh-IFN-r and ADM in the order, Treat A > Treat B> Treat C, it can be concluded that the simultaneous administration of rh-IFN-r and ADM may be the most effective method to combine these two therapeutic modalties.
조혈모세포이식 환자에서의 기계 환기의 위험 인자 : Assessment of Risk Factors
안중경,이홍기,황정혜,박세훈,이효락,송서영,이순일,박준오,김기현,김원석,정철원,임영혁,강원기,박근칠 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1
연구배경: 조혈모세포이식을 시행한 환자에서 집중 치료 시 예후가 매우 나쁜 것으로 알려져 있고, 기계 환기는 강력한 사망 예측 인자로서 보고되고 있다. 그러나 현재까지 이식 환자에서 기계 환기의 위험 인자를 밝힌 연구는 매우 드물다. 따라서 기계 환기를 시행한 조혈모세포이식 환자의 임상적 특징을 살펴보고 기계 환기에 대한 위험 인자를 알아보고자 하였다. 방법: 삼성서울병원에서 조혈모세포이식을 시행한 환자 중 기계 환기를 시행한 23명과 기계 환기를 시행하지 않은 142명을 대상으로 후향적 연구를 시행하였다. 기계 환기에 대한 위험 인자의 여부에 관해서는 chi-square 또는 Fisher's exact 검정을 시행하였으며 기계 환기에 대한 각 위험 인자의 영향에 관해서는 다중로지스틱 회귀분석을 시행하였다. 결과: 기계 환기를 시행한 23명의 환자 중 30일째 생존자는 1명이었고 6개월째 생존율은 0%였다. 생존자와 사망자 모두에서 다기관 기능부전이 관찰되었으며, APACHE II 점수와 SAPS II 점수에 의한 예측 사망률은 각각 56%, 59%였다. 조혈모세포이식 후 기계 환기의 위험 인자로는 선행 질환이 혈액질환, 부분불일치 동종이식, 간정맥폐색성질환, 이식 전 질병 상태가 재발하였거나 약물에 반응하지 않는 경우였다. 다중로지스틱 회귀분석 결과 기계 환기의 위험 인자로 통계적으로 유의한 차이를 나타낸 것은 단지 부분불일치 동종이식을 시행한 경우였다. 결론: 현재까지 조혈모세포이식 환자에서 집중 치료의 역할에 대해서는 확실히 정립되어 있지는 않으며, 이식 환자에서 기계 환기는 강력한 사망 예측 인자이다. 따라서, 조혈모세포이식을 시행한 환자에서 기계 환기의 위험 인자와 불량한 예후 인자를 고려하여 기계 환기 여부에 대한 신중한 결정을 내려야 한다. Background: Respiratory failure requiring mechanical ventilation is a frequent, critical complication of hematopoietic stem cell transplantation (HSCT). Patients who require mechanical ventilatory support after HSCT generally have a very poor prognosis. Mechanical ventilation in HSCT recipients is a strong predictive factor of mortality. The objectives of this study are to describe clinical characteristics of HSCT recipients undergoing mechanical ventilation and to identify the risk factors for mechanical ventilatory support after HSCT. Methods: We performed a retrospective chart review of all patients >15 yrs old who received HSCT at Samsung Medical Center and subsequently required mechanical ventilatory support between 1996 and 2001. Results: Thirty-day mortality rate in HSCT recipients undergoing mechanical ventilation was 95.6%. The mean predictive mortality rates of APAHCE II score and SAPS II score were 56% and 59%, respectively. Reasons for mechanical ventila-tion were sepsis (47.8%) followed by fungal infection (13%) and diffuse alveolar hemorrhage (8.7%). Univariate analysis identified relapsed or refractory diseases at HSCT, hematologic disease, hepatic venoocclusive disease and allogeneic or HLA-mismatched transplant as significant risk factors for mechanical ventilation. On multivariate logistic regression analysis, only allogeneic mismatched transplant remained significant. Conclusion: Overall outcome of HSCT recipients undergoing mechanical ventilation is very poor. Therefore, the risk factors and the poor prognostic factors for mechanical ventilation should be taken into account in making further treatment decision for HSCT recipients requiring mechanical ventilation.
이소성 ACTH 생산에 의해 야기된 Cushing 증후군이 동반된 소세포 폐암
곽영임 ( Young Im Kwak ),임영혁 ( Young Hyuck Im ),천영국 ( Young Kug Cheon ),이가희 ( Ka Hee Yi ),남현석 ( Hyeon Seok Nam ),이춘택 ( Choon Taek Lee ),강윤구 ( Yoon Koo Kang ),이진오 ( Jhin Oh Lee ),강태웅 ( Tae Woong Kang ) 대한결핵 및 호흡기학회 1995 Tuberculosis and Respiratory Diseases Vol.42 No.6
Lee, Jun Hyuck,Kim, Soo Young,Rho, Seong-Hwan,Im, Young Jun,Kim, Young Ran,Kim, Mun-Kyoung,Kang, Gil Bu,Rhee, Joon Haeng,Eom, Soo Hyun Korean Society for Molecular Biology 2005 Molecules and cells Vol.20 No.3
<P>Plasmid Achromobacter secretion (PAS) factor is a putative secretion factor that induces the secretion of periplasmic proteins. PAS factor from Vibrio vulnificus was crystallized at 294 K by the hanging drop vapor-diffusion method. It was isolated as a monomer during the purification procedures. The native crystal belongs to the F222 space group with unit cell parameters a=56.1, b=74.4, c=80.0 A, a=b=g=90 degrees. The crystal was soaked in cryoprotectant containing 1 M NaBr for 1 h for MAD phasing. The diffraction limit of the Br-MAD data set was 1.9 A using synchrotron X-ray irradiation at beam line BL-18B at the Photon Factory, Japan.</P>
국소적으로 진행된 식도암 환자에서 Cisplatin , Etoposide 및 5 - Fluorouracil ( PEF ) 선행화학요법의 효과 ; A Pilot Study
정상훈(Sang Hoon Jeong),임영혁(Young Hyuck Im),강윤구(Yoon Koo Kang),손태용(Tae Yong Son),곽영임(Young Im Kwak),천영국(Young Kug Cheon),김현각(Hyun Kag Kim),류백렬(Baek Yeol Ryoo),김유철(You Cheoul Kim),이춘택(Choon Taek Lee),김창민( 대한내과학회 1996 대한내과학회지 Vol.51 No.4
The prognosis of esophageal cancer is very poor. Even for those with localized disease who are potentially curable, 5-year survival rates are under 20% in almost all series. We conducted a pilot study to evaluate the safety and possibility of efficacy of neoadjuvant chemotherapy followed by surgery in patients with locally advanced esophageal cancer. Two or three cycles of neoadjuvant combination chemotherapy with cisplatin (20㎎/㎡/day i.v., D1-5), etoposide (100㎎/㎡/day i.v., D1,3,5), and 5-fluorouracil (800㎎/㎡/day continuous i.v., D1-5) were planned to be given before surgery. Total 21 patients entered this trial. Three patients were lost to follow-up after 1 cycle of chemotherapy to make eighteen patients evaluable. Thirteen out of eighteen patients (72%) had objective improvement after neoadjuvant chemotherapy and four (22%) had no change and one (6%) had progression. Among 18 evaluable patients, surgery was performed in 11 patients. Surgery could not be done in 7 patients because of patient's refusal (5), progression of disease (1), and development of lung abscess (1). In 13 patients who were candidates for surgery, curative resection was done in 10 patients to make curative resection rate 10/13 (77%). One of eleven patients having surgical resection had no pathologic evidence of tumor (pathologic complete remission 9%). Postoperative complications of wound dehiscence and anastomotic site fistula developed in 2 patients. Three courses of postoperative adjuvant chemotherapy with PEF regimen were administered to 9 patients. The median survival time for all 18 patients was 60 weeks. Toxicities of PEF neoadjuvant chemotherapy were leukopenia, nausea/vomiting and alopecia, but they were mild and reversible. There was no treatment-related deaths. In conclusion, neoadjuvant chemotherapy with PEF regimen were tolerable, safe and possibly effective in locally advanced esophageal cancer. Based on this study, we will perform phase 2 or 3 study to assess the efficacy of PEF neoadjuvant chemotherapy for locally advanced esophageal cancer.