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수질 정화를 위한 부착조류의 성장에 적합한 매질과 유속
박구성 ( Park Ku Sung ),김호섭 ( Kim Ho Sub ),최광현 ( Choi Kwang Hyun ),윤춘경 ( Yoon Chun Gyeong ),황순진 ( Hwang Soon Jin ),공동수 ( Gong Dong Soo ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
The purpose of this study was to evaluate mesh size and water velocity for the growth of filamentous periphytic algae (FPA). The growth experiment was carried out in the constructed pilot waterway system with nutrient-rich treated wastewater. Growth rate of FPA was highest at water velocity about 10 cm/s. The maximum standing crop of FPA was 253 ㎍ chl.a/cm<sup>2</sup>, and an average of the net productivity was 3.92 mgDW/cm<sup>2</sup>/day or 25.3 ㎍ chl.a/cm<sup>2</sup>/day. Biomass development and growth rates of FPA were highest at the net with 20mm mesh size during the fall season and 10mm mesh size during the winter season.
고용량 항암요법후 말초혈액 자가조혈모세포 이식환자에서의 감염 양상
구성현,최소연,조요한,한동석,마경애,김현수,김효철 대한조혈모세포이식학회 1996 대한조혈모세포이식학회지 Vol.1 No.1
목적: 동종골수이식이나 자가골수이식, 말초혈액 자가조혈모세포이식에서 공통적으로 이병률과 사망률에 관여하는 중요한 인자중의 하나가 항암 치료후 발생하는 감염이다. 감염의 발생빈도 및 정도에 대해서 확실히 알수 있고, 위험인자를 감별해 낼수 있다면 고용량 항암요법 후에 발생하는 이병률과 사망률을 줄여 더 나은 결과를 얻을수 있다고 사료되어 저자 등은 고용량 항암요법을 시행한 환자들을 대상으로 후향적인 연구를 통해 감염 및 그로 인한 합병증을 발생빈도, 정도 및 감염과 관련된 위험인자를 규명하려고 하였다. 방법: 1995년 11월부터 96년 8월까지 아주대학교병원에서 고용량 항암요법후에 말초혈액 자가조혈모 세포이식을 시행한 33명의 환자를 대상으로 하여 나이, 성별, 진단명, 조혈모세포이식 날짜, 사용한 항암제의 종류, 방사선 치료 유무 여부, 호중구 감소증 기간, 사망여부, 사망원인을 분석하였다. 결과 33명의환자에서 37회(4명은 2번 항암치료)의 고용량 항암 요법을 시행한 결과를 분석하였다. 1) 기존에 가지고 잇는 질환을 종류별로 보면, non-Hodgkin's lymphoma(n=13), Hodgkin's disease(n=1), breast cancer(n=5), stomach cancer(n=14)이었으며 모든 환자가 기존의 항암 치료에 불응하는 악성 종양이었다. 2) 대상환자의 평균 연령은 42세이었으며 여자가 18명이었고, 평균 호중구 감소기간은 9.62일 이었다. 3) 37회 고용량 항암 요법후 8회를 제외한 29회 (78.3%)에서 열이 있었으며, 29회의 발열 중 8예(21.6%)에서 감염이 균 검출로 증명되었거나 임상적으로 확실히 의심되었다. 8회의 감염중 Staphylococcus epidermidis가 1예, E coli가 2예, Bacteroides fragilis가 1예 있었다. 4) 33명의 환자중 모두 10명이 현재까지 추적관찰중 사망하였는데 이중 2명이 고용량 항암요법후 호중구가 감소되어있는 기간에 발생한 패혈증으로 사망하여 사망원인이 고용량 항암요법에 의한 합병증과 직접적인 연관이 있었다. 5) 감염에 연관되는 위험인자를 알아보기 위하여 나이, 성별, 방사선치료유부, 호중구 감소증 기간, 악성종양 종류 등을 감염군과 비감염군으로 나누어 비교하였는데 모든 항목에서 감염군과 비감염군 사이에 통계적으로 의미있는 차이를 찾을수 없었다. 결론: 고용량 항암요법후 감염이 가장 중요한 이병률 및 사망률의 원인이 되고 있는데 현재 말초혈액 자가조혈모 세포이식후 조혈촉진인자를 사용하여 감염 발생률을 많이 줄이기는 하였으나 앞으로 좀더 많은 환자를 오랜기간 추적 관찰하여 감염으로 인한 문제점을 찾아 개선해 나가야 하겠다. Objectives: Infection is one of the most important factor in the morbidity and mortality of both allogenic and autologous bone marrow transplantation, and peripheral blood stem cell transplant patients. Therefore, an accurate knowledge of the incidence, severity, and risk factors can lead to reduction in the morbidity and mortality. We performed a retrospective analysis in patients with high dose chemotherapy to clarify these infections and also the incidence of complication, severity and associated risk factors. Methods: The subjects of our study were patients who had been admitted at Ajou University Hospital from November 1995 to August 1996 and received autologous peripheral blood stem cell transplantation(PBSCT) after high dose chemotherapy. There were 33 patients in all and the following were analyzed : age, sex, disease diagnosis, date of PBSCT, the duration of neutropenia, and the cause of death. Results: The results of 37 trials (4 patients had two trials) of high dose chemotherapy in 33patients were analyzed. ① The diagnosis included non-Hodgkin's lymphoma(n=13), Hodgkin's disease(n=1), breast cancer(n=5), stomach cancer(n=14). All of the patients were refractory to the conventional chemotherapy. ② The average age was 42years, 18 of the patients were female and the mean duration of netropenia was 9.62days. ③ 29 out of37trials was associated with fever. In 8 out 29case, infection was diagnosed by detection of bacteria or clinically suspicious. Staphylococcus aureus was detected in 4case, Staphylococcus epidermidis in 1 case, E coli in 2 case, and Bacteroides fragilis 1 case. ④10patients died during follow up. 2 case died of sepsis during the period of neurtropenia. Therefore 2 death were directly related to the complications of high dose chemotherapy. ⑤The following factors were analyzed in both infected and non-infected group to determine if there any significant different: age, sex, radiation therapy, duration of neutropenia, disease. There was no significant different between the 2 groups. Conclusion: Infection is the most important cause of morbidity and mortality in high dose chemotherapy. The rate of infection has been largely reduced as a result of rapid marrow engraftment following autologous PBSCT. A longer duration of follow up must be done on more patients to find and improve the problems after autologous PBSCT.
다양한 악성 종양에서의 말초혈액조혈 모세포이식을 통한 고용량 항암치료
김현수,구성현,최소연,조요한,지석배,박준성,박희붕,황성철,유희석,전미선,조용관,김효철 대한조혈모세포이식학회 1996 대한조혈모세포이식학회지 Vol.1 No.1
High dose chemotherapy with autologous stem cell transplantation is a new therapeutic strategy for various malignancy, especially leukemia, lymphoma, breast cancer. Recently, increasing number of trials has been done in solid tumors responsive to conventional chemotherapy using high dose chemotherapy and autologous peripheral blood stem cell transplantation. At Ajou University Hospital, between August 1995 and September 1996, 60 patients received high dose chemotherapy with peripheral blood stem cell transplantation, which in cluded 20 stomach cancers, 16 breast cancers, 15 lymphomas, 4 lung cancers, 3 ovarian cancers, 1 cervix cancer and 1 cancer of unknown primary cancer. Median age of patients was 44 years(range, 19 to 66), and male to female ratio was 0.7:1. The median time to recovery to neutrophil count more than 0.5x109/L was 11 days, and platelet count more than 20x109/L and 50x109/L was 13 and 17 days. With high dose chemotherapy in 41 patients who had relapsed or refractory disease, the complete remission was achieved in 34%(14/41) of patients and overall response rate was 83%(34/41). There was high response rate in spite of various tumor and various status of disease. In with stomach cancer and breast cancer who were given HDCT with adjuvant treatment aim, high dose chemotherapy was well tolerated with minimal non-hematogic toxicity and morbidity. During high dose chemotherapy, there was three transplantation related death, 2 sepsis and 1 veno-occlusive disease. Our experience suggest is well tolerated procedure which confers that high dose chemotherapy with peripheral blood transplantation will be a promising treatment modality for the relapsed and refractory tumors, as well as for patients with high risk for relapse following curative surgical resection.