• 제목/요약/키워드: new drug

검색결과 1,866건 처리시간 0.032초

사람 U2OS 골육종 세포에서 Matrix Metalloproteinase의 발현에 Ibandronate가 미치는 영향 (Effects of Ibandronate on the Expression of Matrix Metalloproteinases in Human U2OS Osteosarcoma Cells)

  • 정성택;서형연;신증봉;김양경;김형원
    • 대한골관절종양학회지
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    • 제15권2호
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    • pp.111-121
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    • 2009
  • 배경: 골육종은 소아 및 청소년기에 가장 흔하게 발생하는 악성 골종양 중 하나이다. 최근 수술적 치료와 항암 화학요법을 병행하여 생존률이 증가하였지만, 아직까지도 항암제는 항암제 내성 및 이차성 악성 종양의 발생 등 여러 문제점을 가지고 있다. 일부 종양은 matrix metalloproteinase(MMPs)의 발현이 증가되어 있고, MMP inhibitor에 대한 연구가 진행되고 있다. 반면 bisphosphonate(BPs) 제제는 골흡수를 억제하는 능력이 있으며, 파골세포와 관계된 골 병변에 광범위하게 사용되고 있다. 또 bisphosphonate 제제는 직접적인 항암효과를 가지고 있는 것으로 알려져 있다. 대상 및 방법: 골육종 세포주(U2OS)를 ibandronate(0, 0.1, 1, 10M)를 이용하여 48시간 동안 처치하였다. 세포의 생존능은 MTT assay를 이용하여, MMP-2와 MT1-MMP의 mRNA level은 reverse-transciption polymerase chain reaction을 이용하여 측정하였으며, MMP-2와 MT1-MMP 단백의 양은 Westernblot을, MMP-2의 활성은 Gelatin zymography를 이용하여 측정하였다. 또, ibandronate 처치 전후의 골육종 세포주의 침습성은 Matrigel invasion assay를 이용하여 측정하였다. 결과: 48시간 ibandronate 처치 후 U2OS 세포주의 침습력은 ibandronate에 대해 용량 의존적으로 감소하였다. 특히 10M 이내의 ibandronate는 세포독성이 나타나지 않았다. 젤라틴 융해능과 MMP-2 및 MT1-MMP의 단백 및 mRNA 정도역시 ibandronate 농도가 증가할수록 감소하였다. 결론: Ibandronate는 골육종 세포주의 MMP-2 및 MT1-MMP의 발현을 억제하였으며, 종양세포의 침습력을 감소시켰다. Bisphosphate의 종양세포 침습 억제 능력은 새로운 전이 억제제의 개발에 도움이 될 것으로 사료된다.

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질적 간호제공을 위한 간호단위 시범 운영 효과에 관한 임상적 연구 (A Clinical Study for Promoting Quality Nusing Care in a University Hospital)

  • 이애주;김선한;성영희;유순애;권인각;정연이;남혜경;권은정
    • 대한간호
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    • 제32권5호
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    • pp.66-77
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    • 1994
  • The purpose of this study was to develop a new nursing unit which can meet changing health care needs, enhance patients' satisfaction and nurses' job satisfaction, and finally guarantee quality nursing care with present manpower. For this, one medical unit was selected as a unit for quality care. And one medical unit which is similar in staffing and patients' characteristics was selected as a control unit. To assess present problems and identify the remedies to the problems a hospital-wide survey and a workshop were performed. According to the survey results, educational programs and improvement of the facilities and equipment supply system, managereal support for interdepartmental cooperation and intensification of bed-side nursing care were adopted as main principles for operating model unit, This model unit was operated for 3 months from Sep. 1, 1992 to Nov. 30, 1992. To evaluate the effectiveness of the model unit, derect/indirect nursing care hours, patients' satisfaction to nursing care, nurses' job satisfaction, and quality care index were measured. Direct/indirect nursing care hours were compared with that of the control unit, and patients' and nurses' satisfaction and quality care index were measured before and after operating model unit and compared with each other. The results of the study were as follows; 1. In the model unit mean direct nursing care hours per cach shift was 146.88 minutes and indirect nursing care hours was 354.72 minutes. The ratio of the direct nursing care hour to indirect nursing hour was 29.6 ; 70.4 and that of the control unit was 26.9 : 73.1. Direct nursing care hour in model unit was longer than that of the control unit. But, the difference was not significant. In subcategories of direct nursing care, the time spent in mobility and exercise, conservation of body temperature, hygiene, and communication and health education were longer than that of the con" trol unit. 2. Indirect nursing care hour in model unit was shorter than that of the control unit. But, the difference was not significant. In subcategories of indirect nursing care, the time spent in drug management and ward arrangement was shorter than that of the control unit. 3. Patients' satisfaction to nursing care was increased significantly after operating the model unit (T=-3.48, P=-0.002) and satisfaction to subcategories of physical comfort measure, psychological cate, and unit management components were significantly higher than before. 4. In the model unit, nurses' total job satisfaction was increased significantly after operating the model unit(Z=2.1004, P=.0357) and satisfaction to subcategory of satisfaction to administration was significantly higher than before (Z=-2.0732, P=.0382). 5. After operating the model unit, quality care index was increased from 89 to 93. With this results, it can be summarized that all the measures tried for quality care, such as educational programs, managereal support for interdepartmental cooperation, and improvement of the equipment and facility provision resulted in partial increase in direct nursing care hours, nurses satisfaction to their job and patients' satisfaction to nursing care. In can be postulated that managereal support and motivation without proper staff supplementation is not enough for increasing direct nursing care hours. And for the enhancement of the level in clinical nursing, and staff supplement must be considered sincerely and the measures for reducing indirect nursing care hours, such as computerization of nursing care activities, improvement of facilities and equipment and facilities supply system, must be instituted in addition.

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우리 나라 농촌지역(農村地域)에 부합하는 1차(次) 보건의료전달체계(保健醫療傳達體系) 정착구현(定着具現)에 관한 연구(硏究) -마을 보건임원(保健任員) 개발(開發)- (A Study on Implementation of Primary Health Care Delivery System meet to Rural Area in Korea -Village Health Voluntary Worker Development-)

  • 구연철;위자형;황선정;최삼섭
    • Journal of Preventive Medicine and Public Health
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    • 제12권1호
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    • pp.13-23
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    • 1979
  • A study was carried out from October 1977 to September 1978 in order to develope health care delively system which will meet to rural area in Korea. For the study objective a model of health care delivery system of Myun (township) area was developed which is adopted the net-work of village health voluntary worker who will play the role of bridge for communication related with health and illness between families or village people and health subcenter, and :he model health care delivery system net-work was set in the area of Soodong Myun, Yangju Gun. which is the rural health demonstration area of Ewha Womans University since 1972. The activities and attitude of 22 village health voluntary workers were observed and analized. during the study period. The results are as follows; 1. For the field activities of village health voluntary workers. a guide line which is described with specific behavioral objectives was developed and used for not only training of the workers but also evaluation of their field activities. 2. During the study period, the number of 971 village people were served primary health care service by village health voluntary worker and the service was classified largely into symptomatic medications (92%) and preventive measures (8%). 3. Comparative percentage of the number of 894 symptomatic cases cared by village health voluntary workers to 5,695 cases of patient treated by Soodong Health Subcenter during the same period was 15.7%. 4. Annual utility rate of village health voluntary worker by Myun total people was 16.1% but utility rate by Rie was varied from 38.2% to 2.8% which shown there were considerable differences in each Rie. In order to settle the village health care service, the obstructive factors of utility should be detected and their counter measure must be taken. 5. As the health need of village people increases, it is expected that the supplement of drug excluding present sit basic drugs is inevitable, but considering the ability of village health voluntary worker, the selection of additional drugs and education, plan should be carefully studied. 6. It is desirable that a financial resource for supplementary purchase of first aid kit, drugs and materials whould be alloted from village public fund like Saemaeul Women's Club fund, which has already practiced in a few villages in the study area. 7. As pointed out by village health voluntary workers, in order to improve the village health, village leaders should be in the center of it and the cooperation of whole village people is a core of healthful village development, and it is reasonable that the health subcenter backs up these voluntary health activities by village people in techniques. 8. It seems effective that a supplementary education for village health voluntary worker be accomplished by a planned education through regular meetings like worker's monthly meeting and irregular post guide when Myun Health Workers can handle the problems found during the round trip of villages. 9. It is desirable that village health voluntary workers, who are recommended by a civil voluntary organization like Saemael Woman's Club, are charged by natural villagc unit, are given a function of village health care service and used through basic education at health subcenter. 10. It is advisable that the village health voluntary worker's service is compensated not by a form of money, but by other way such as an exemption of medical fee of worker herself or her families in health subcenter can be one method. 11. Daily health activities of each village health voluntary worker should be reported to health subcenter by biweekly or monthly in order to get not only for basic data of the program but also for evaluation the program. It is recomandable that the report form should be simple and clear enough for village health voluntary worker to fill it effectively. 12. Village health care service should be developed into a Saemaeul Movement in which village people actively participate. For this, the appointed function of village health voluntary worker should be absorbed into those of living Environment Betterment Section or Family Planning Section of Saemaeul Women's Club or it is desirable that establish a new section, Village Health Promoting Section and make it involve the appointed functions of those sections mentioned above.

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Majarine 유도체인 majarol의 흰쥐에 있어서 혈압 및 심박동수에 대한 작용과 적출 개구리 심장에 대한 작용 (The Effects of Majarol on the Blood Pressure and Heart Rate in Rats and Isolated Frog Heart)

  • 이종화;박영현;조병헌;김유재;김종배;김천숙;차영덕;김영석
    • 대한약리학회지
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    • 제22권1호
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    • pp.34-44
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    • 1986
  • 본 실험실에서는 한국 특산인 매자나무 (Berberis koreana Palibin)의 뿌리에서 majarine(isoquinoline alkaloid)을 분리하여 여러 가지의 약리작용을 검토한 바 있다. 현재는 majarine의 화학적 구조를 변화시켜 그 유도체의 약리작용을 검색하고 있으며, 그 중 majarine의 isoquinoline ring에 치환되어 있는 두 methoxy group 중 하나를 hydroxy기로 치환된 majarol을 합성하였다. Majarol을 흰쥐 정맥내로 투여하여 혈압 및 심박동수의 변화와 epinephrine, phentolamine, isoproterenol, propranolol, atropine, diphenhydramine과 hexamethonium 등에 대한 약물 상호작용을 관찰하였으며 또 적출 개구리 심장에 대한 작용을 관찰하여 다음과 같은 성적을 얻었다. Majarine을 저용량(0.5-2 mg/kg)에서 용량의존적으로 현저하고 일시적인 혈압 강하와 약간의 심박동수 감소를 나타냈으며, 고용량(>5mg/kg)에서는 이차적으로 지속적인 혈압강하와 심박동수 감소를 나타냈다. 일시적인 혈압강하작용은 atropine sulfate, diphenhydramine과 hexamethonium에 의해 억제되지 않았고, epinephrine의 혈압 상승작용은 majarol의 전처치로 현저하게 차단되었으며, majarol 투여시 나타나는 지속적인 혈압 강하는 심박동수 감소에 수반되어 나타났고 이는 propranolol에 의해 억제되지 않았으며, isoproterenol의 positive chronotropic effect는 majarol 전처치로 차단되지 않았다. majarol은 저용량에서 적출개구리 심장의 수축기 장력을 증가시켰으며 고용량에서는 개구리 적출심장에 대해 억제적으로 작용하였다. 이러한 결과로 보아 majarol의 일시적이고 현저한 혈압강하작용은 ${\alpha}$-adrenoceptor 차단작용에 의한 것으로 사료되고, 이차적으로 나타나는 지속적인 혈압강하작용은 심박동수의 감소와 동시에 나타나는 것으로 보아 심장에 대한 작용인 것으로 추정되며, majarol의 심장에 대한 작용을 ${\beta}$-adrenoceptor에 대한 작용보다는 심근에 대한 직접적인 작용인 것으로 추정된다.

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Alloxan 투여 가토(家兎)에 대한 골절치유 실험 (Studies on the Fracture Healing in the Alloxan treated Rabbits)

  • 김성준
    • 대한약리학회지
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    • 제7권1호
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    • pp.53-65
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    • 1971
  • It is well known that diabetes mellitus is associated with metabolic derangements, such as hyper-glycemia, ketosis, glycosuria, and also widespread alterations in the blood vessels, kidneys, eyes, peripheral nerves and heart. It is also recognized that healing of skin wound is delayed in diabetics. In bone, according to Aegerter, osteopenia develops in diabetes mellitus and it is chiefly ascribed to overutilization of protein. Shim claims that total blood flow to the entire skeletal system is approximately 4 to 8 percent of resting cardiac output and blood supply to the skeletal system would be decreased on account of secondary arteriosclerotic changes in the diabetics. An adequate blood supply is an essential factor in the healing process of fracture, and disturbed blood flow, either local or systemic, will invariably delay union of the fragments or the fragments from being fused. As the author has encountered several cases of diabetics in whom healing of fracture was delayed or incomplete, this experimental study was undertaken to elucidate the effects of hyperglycemia and diabetes mellitus on the healing process of fracture. In this experiment adult albino rabbits, weighing about 2 kg. were used and divided into 6 groups. The femur of each animal was fractured surgically, and then the healing process of fracture was periodically checked by radiography at an interval of one week for a period of 6 weeks. Thereafter, all the rabbits were killed to obtain tissue preparation of the femur. The experimental groups were as follows; 1) Control group: Six rabbits sustained a surgical fracture to the femur, without being given any other treatment or drug. 2) Alloxan-treated group: For inducing diabetes, alloxan was given intravenously to 17 rabbits in various dose as follows; to 7 of them 40 mg/kg, to 6 rabbits 80 mg/kg and to 4 rabbits 120 mg/kg of body weight, respectively. 3) Insulin-treated group: Protamine-zinc insulin was injected subcutaneously to each of 6 rabbits in a daily dose of 1 unit per kilogram of body weight. 4) Group treated with insulin after alloxan: Four rabbits were given 80 mg of alloxan once and than 1 unit of insulin per kilogram of body weight daily. Another 5 rabbits were injected 1 unit of insulin per kg of body weight daily following administration of alloxan in a dose of 120 mg/kg. 5) Homotransplantation group: Following intravenous injection of alloxan in a dose of 120 mg/kg, 10 rabbits underwent homotransplantation of a short bone segment to the femur. Five of them were subsequently given 1 unit/kg of insulin daily. 6) Sugar-treated group: six rabbits were fed $15{\sim}20$ gm of sugar daily throughout the period of experiment. The results obtained are summarized as follows; 1. Blood sugar level and damage to the pancreatic islet increased proportionately when alloxan was given to the rabbits in various doses. No appreciable change could be observed in the islets when the blood sugar level was altered by either oral administration of sugar or subcutaneous injection of insulin. 2. Comparing with the control group, healing of fracture was delayed in the alloxan-treated group, while callus formation and periosteal reaction were shown to be more prominent in this group and subsequently, the ultimate osseous tissue formed at the fracture site was significantly smaller in amount and less compact. These findings were more marked as the amount of alloxan increased. 3. Administration of insulin prevented the delay in healing process of fracture in the rabbits with alloxan-induced hyperglycemia. In this case, the course and progression of fracture healing were almost similar to those of control group. 4. Union between the host bone and the fragment transplanted from other rabbit of the same species was more delayed in the group treated with alloxan alone than in the group to which insulin was administered after development of alloxan-induced diabetes. In both groups periosteal new bone developed from the ends of the host bone, above and below the transplanted fragment, and directly fused with failure of periosteal callus to bridge the adjacent ends of the host bone and the transplanted fragment. 5. The healing process of fracture was not inhibited by alteration in blood sugar level when the blood sugar was abnormally increased by excessive sugar intake or lowered by administration of insulin alone. The healing of fracture in these groups progressed similarly as in the control group. In brief summary, it appears that the healing process of fracture would be definitely disturbed in diabetic state brought about by damage to the pancreatic islet. As such an inhibition could be overcome with insulin, it seems that insulin plays an important role in healing of fracture, but alteration in blood sugar level alone does not modify healing process of fracture to significant degree.

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기니피그 위 평활근의 자발적 수축과 전기적 활동에 대한 $Ca^{2+}$$Ca^{2+}$-길항제 영향 (Effect of $Ca^{2+}$ and $Ca^{2+}-antagonists$ on the Spontaneous Contractions and Electrical Activities of Guinea-pig Stomach)

  • 이상호;김기환
    • The Korean Journal of Physiology
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    • 제21권2호
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    • pp.241-257
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    • 1987
  • The effects of external $Ca^{2+}$ and $Ca^{2+}-antagonists$ on the spontaneous contractions and electrical activities were investigated in guinea-pig stomach in order to clarify the mechanism for the generation of slow waves. Electrical responses of circular smooth muscle cells were recorded using glass capillary microelectrodes filled with 3 M KCl. All experiments were performed in tris-buffered Tyrode solution which was aerated with 100% $O_2$ and kept at $35^{\circ}C$. The results obtained were as follows: 1) The amplitude of spontaneous contractions was maximal at around 2-4 mM $Ca^{2+}$, whereas their frequency was inversely related with external $Ca^{2+}$ within the range of 0.5 to 16 mM $Ca^{2+}$. 2) Verapamil suppressed the amplitude of spontaneous contraction in a dose-dependent manner, while the frequency of spontaneous contractions was almost not changed over the whole concentration of verapamil $(0.01{\sim}5\;mg/l)$. 3) Manganese increased both the amplitude and the frequency of spontaneous contractions dose-dependently in low $Mn^{2+}$ (below 0.05 mM $Mn^{2+}$), while their amplitude and frequency were decreased in high $Mn^{2+}$ (above 0.1 mM $Mn^{2+}$). 4) The ampltude and maximum rate of rise of slow waves were incrased in high $Ca^{2+}$ solution. In $Ca^{2+}-free$ solution, the spontaneous contractions recorded simultaneously with slow waves ceased and tonic contraction ($Ca^{2+}-free$ contracture) was developed in parallel with membrane depolarization and the disappearance of slow waves. 5) Verapamil (1 mg/1) decreased the amplitude and maximum rate of rise of slow waves and it depolarized the membrane by about 6 mV, whereas the frequency of slow waves was not affected by verapamil. 6) Manganese showed different characteristic effects between low and high $Mn^{2+}$ on the slow waves: In low $Mn^{2+}$ (0.05 mM $Mn^{2+}$), the initial rapid increases and the subsequent gradual decreases in three parameters of slow waves (amplitude, rate of rise, and frequency of slow waves) till a new steady state were observed. However, in high $Mn^{2+}$ (0.5 mM $Mn^{2+}$) slow waves disappeared and membrane was depolarized. From the above results, the following conclusions could be made: 1) $Ca^{2+}$ is necessary for a generation of the slow waves, even though it is small amount. 2) Verapamil suppresses the spontaneous contractions of gastric antral strip by the decreases in amplitude and maximum rate of rise of slow waves, while this drug does not block the $Ca^{2+}-channel$ involved in the generation of slow waves. 3) Manganese has dual actions on the $Ca^{2+}-channels$; the $Ca^{2+}-channel$ involved in the generation of slow waves (or Na-Ca exchange system) or the channel for the generation of spike potentials are stimulated by a low concentration of $Mn^{2+}$, while both the $Ca^{2+}$. Channels are blocked by high concentration of $Mn^{2+}$.

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배추김치의 활성성분인 3-(4-hydroxyl-33,53-dimethoxyphenyl)propionic acid의 고지혈증 치료 효과 (The Effect of 3-(4-hydroxyl -33,53-dimethoxyphenyl)propionic Acid in Chinese Cabbage Kimchi on Lowering Hypercholesterolemia)

  • 김현주;권명자;서정민;김재곤;송수희;서홍석;송영옥
    • 한국식품영양과학회지
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    • 제33권1호
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    • pp.52-58
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    • 2004
  • 배추김치의 생리활성물질인 3-(4-hydroxyl-3',5'-dimethoxyphenyl)propionic acid의 고지혈증 치료효과를 살펴보기 위하여 고콜레스테롤 혈증을 유발시킨 토끼에게 1차 실험에서는 정상식이를 공급하고 2차 실험에서는 고콜레스테롤 식이를 공급하면서 각각 16일간 정맥으로 투여하여 혈장지질 농도 변화를 살펴보았고, 그 효과는 고지혈증 치료제로 사용되고 있는 Simvastatin과 비교하였다. 정상식이 공급시 Kimchi군 및 Simvastatin군에 의한 총콜레스테롤 감소는 대조군에 비해 18.65%와 29.67%이었고 고콜레스테롤 식이 공급시에는 각각 33.79%및 21.81%이었다. LDL-C의 저하현상은 정상식이 공급시에는 미미하게 관찰되었고, 고콜레스테롤 식이 공급시에는 Kimchi군 및 Simvastatin군에서 약 130%정도의 감소 효과가 관찰되었다. 중성지방의 감소효과는 정상식이시에는 거의 관찰되지 않았고, 고콜레스테롤 식이시에는 Kimchi군에서 약 105%, 그리고 Simvastatin군에서 약 62%정도의 감소가 관찰되었다. HDL-C의 변화는 모든 군에서 관찰되지 않았다. 고콜레스테롤 식이를 섭취한 토끼간의 HMG-CoA reductase 활성을 살펴보았을 때 Kimchi군 및 Simvastatin군의 활성이 48.44% 그리고 139.06% 증가하였다. 본 연구결과 Kimchi군은 고지혈증을 치료하는 효과가 있음이 관찰되었고, 그 효과는 Simvastatin군과 유사하였다. Kimchi군 및 Simvastatin군에서 관찰된 HMG-CoA reductase 활성의 증가는 지질저하 현상에 대한 보상 작용으로 생체 항상성 유지를 위한 현상으로 사료된다 3-(4-hydroxyl-3',5'-dimethoxyphenyl)propionic acid의 고지혈증 치료기전은 Simvastatin과 유사할 것으로 예상된다.

토끼에서 Doxycycline을 이용한 흉막유착 효과 (The Effect of Pleurodesis with Doxycycline in the Rabbit)

  • 원경숙;박건욱;전원호;백재중;정연태;서정일;손진희
    • Tuberculosis and Respiratory Diseases
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    • 제41권5호
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    • pp.531-536
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    • 1994
  • 연구배경 : Tetracycline의 흉막강내 주입은 오랫동안 악성 흉막삼출액이나 재발성 기흉을 가진 환자에게 화학적 흉막유착술의 가장 흔한 방법으로 사용되어왔다. 그러나 최근 주사용 tetracycline의 제조가 중단됨에 따라 이를 대체할만한 시약이 필요하게 되었으며, 이에 저자들은 같은 계열의 약제인 doxycycline을 토끼의 흉막강에 주입하여 이의 흉막유착효과를 tetracycline과 비교하고자 하였다. 방법: 평균 2.6 kg의 뉴질랜드 백색 토끼 18 마리를 여섯 마리씩 세 군으로 나누어 각 군에 tetracycline 20 mg/ml/kg, doxycycline 7 mg/ml/kg, doxycycline 20 mg/ml/kg를 우측 흉막강에 주입한 후 제 28일에 개흉술을 시행하여 흉막유착 정도를 비교하였다. 결과: 1) Tetracycline 20 mg/ml/kg를 주입한 여섯 마리의 토끼 중 다섯 마리는 여러 개의 섬유대에 의한 국소적인 흉막유착을 보였으며 나머지 한 마리는 사망하였다. 2) Doxycycline 7 mg/ml/kg를 주입한 여섯 마리의 토끼 중 세 마리는 국소적 흉막유착을 보였으며 나머지 세 마리는 섬유조직에 의한 치밀한 흉막유착을 보였다. 3) Doxycycline 20 mg/ml/kg를 주입한 여섯 마리의 토끼 중 두 마리는 치밀한 흉막유착을 보였으며, 다른 두 마리는 치밀한 흉막유착과 함께 기저 폐실질의 괴사를 보였고 나머지 두 마리는 사망하였다. 결론 : Doxycycline의 흉막유착효과는 tetracycline에 비해 대등하거나 더 강력한 것으로 생각되며, 7mg/ml/kg의 용량으로 별다른 부작용 없이 충분한 흉막유착효과가 얻어졌다.

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$I{\kappa}B{\alpha}$-SR 유전자이입이 Cisplatin, Paclitaxel에 대한 폐암세포주의 감수성에 미치는 영향 (The Effect of $I{\kappa}B{\alpha}$-SR Gene Transfer on the Sensitivity of Human Lung Cancer Cell Lines to Cisplatin and Paclitaxel)

  • 이석영;설자영;박경호;박근민;황용일;김철현;장승훈;권성연;유철규;김영환;한성구;심영수;이춘택
    • Tuberculosis and Respiratory Diseases
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    • 제51권2호
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    • pp.122-134
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    • 2001
  • 연구배경 : 종양 세포들이 항암제에 대하여 저항을 나타내는 기전인 'apoptosis에 대한 저항'에 NF-${\kappa}B$의 활성이 중요한 역할을 하리라 생각되고 있다. 즉, NF-${\kappa}B$가 종양세포의 apoptosis를 억제하는 작용을 일으킴으로써 종양 세포의 생존에 유리하게 작용하고 있음이 제시되 고 있다. 방 법 : 본 연구에서는 비소세포폐암에 대한 항암 치료의 내성에 대하여 외부 자극으로 분해되지 않는 $I{\kappa}B{\alpha}$-SR의 삽입으로 NF-${\kappa}B$의 활성을 억제시키고 이로 인해 항암제에 대한 폐암세포주의 감수성이 증가하는지 여부를 밝혀 보고자 하였다. 결 과 : 비소세포폐암 세포주로 NCI H157, NCI H460 세포주를 이용하였고, Ad-$I{\kappa}B{\alpha}$-SR를 transduction 한 후 cisplatin을 처치한 군에서 NF-${\kappa}B$의 핵 내로의 이동이 억제되었으며 대조군과 비교시 $IC_{50}$이 2-3배 정도 유의하게 낮아짐을 관찰하였다. 또한 paclitaxel의 경우에도 Ad-$I{\kappa}B{\alpha}$-SR로 감염된 폐암세포주는 대조군과 비교시 IC50이 2배 정도 유의하게 낮아짐을 관찰하였다. 이러한 항암제에 대한 감수성의 증가의 기전으로 cisplatin의 경우는 $I{\kappa}B{\alpha}$-SR의 이입이 NF-${\kappa}B$의 활성을 억제 함으로 인한 apoptosis의 증대 때문인 것으로보인다. 결 론 : 폐암세포주에서 Ad-$I{\kappa}B{\alpha}$-SR transduction은 Clsplatin, paclitaxel에 대한 폐암세포주의 감수성을 증가시킴으로 앞으로 폐암을 치료하는데 있어 새로운 치료 방법이 될 수 있을 것으로 보인다.

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항 백혈병작용에 관련된 천연물의 자료조사 (Review of Anti-Leukemia Effects from Medicinal Plants)

  • 배현옥;임창경;장선일;한동민;안원근;윤유식;전병훈;김원신;윤용갑
    • 동의생리병리학회지
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    • 제17권3호
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    • pp.605-610
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    • 2003
  • 인삼, 호장근, 상산 등에서 분리한 성분들이 HL60, HL-60, Jurkat, Molt-4에 대한 억제작용이 있는 것으로 조사되었고, 익모초의 Leonunrine, 대청엽의 Indirubin, 천문동의 Aspargus polysaccharideA.B.C.D, 백합의 Colchicnamile, 익모초의 Lenunrine, 산두근, 자초근 추출물이 여러유형의 백혈병 환자에 대한 백혈병 억제효과가 있는 것으로 조사되었으며, mouse의 P388, L1210, L615, L120, S-180 등에 항 백혈병 효과가 있는 것으로는 완화, 로회, 원지, 오수유, 파두, 뇌공등, 석산, 백출, 단삼, 산약, 목단피, 청대, 감초, 당귀에서 분리한 성분들이 있으며 백굴채, 마전자, 가시오가피, 천초 추출물들이 동물실험에서 항암작용이 있는 것으로 조사되었다. 또 천연물에서 분리한 성분이 항백혈병 작용이 있는것으로는 ginsenoside Ro, ginseonoside Rh2, Emodin, Yuanhuacine, Aleemodin, phorbocdiester, Triptolide, Homolycorine, Atractylol, Colchicnamile, Paeonol, 당귀다당체, Aspargus polysaccharideABCD, Indirubin, Leonunrine, Acinosohic acid, Trichosanthin, G2 132, Schizandrin, allicin, Indirubin, cmdiumlactone chuanxiongol, 18A glycyrrhetic acid, Kansuiphorin A, 13 oxyingenol Kansuiphorin B 등이 조사되었고, 추출물이 항 백혈병 작용이 있는 것으로는 원지, 오수유, 백굴채, 대황, 산두근, 마전자, 가시오가피, 천초 등이 조사되었다.