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저용량 Cyclophosphamide 투여가 외상후 패혈증 사망율 및 면역계에 미치는 영향

Other Titles
 Effects of Low-dose Cyclophosphamide against Sepsis in Traumatized Mice 
Authors
 김승호 
Department
 Dept. of Emergency Medicine (응급의학교실) 
Issue Date
1989
Description
의학과/석사
Abstract
[영문]

[한글]

외상환자에서의 후기 패혈증발생은 외상에 의한 면역기능 저하, 특히 세포성 면역이 심

하게 저하되는 것과 밀접한 관계가 있는 것으로 알려져 있다. 세포성 면역에 관여하는 세

포중 억제 T-세포의 활성화는 면역저하의 시발요인 인데 알킬화제제인 cyclophosphamide

의 저용량 투여로서 억제 T-세포만 선택적으로 억제함이 여러 연구자들에 의하여 밝혀졌

다.

이에 연구자는 마우스를 이용하여 외상후 복막염유발에 의한 패혈증에서 저용량 cyclop

hosphamide 투여가 패혈증 사망률에 미치는 영향을 관찰하였고 이에 따른 면역계의 변화

를 측정키 위해 phytohemagglutinin과 concanavalin A에 대한 림프구 아세포화 자극지수

를 산출하였다.

패혈증 발생후 생존율은 외상+cyclophosphamide+복막염군 36.8%, cyclophosphamide+복

막염군 29.4%, 복막염 단독군 31.6%로 모두에서 외상+복막염군의 10.5%에 비해 유의한 생

존율의 차이를 보였다(P<0.025). 림프구 아세포화 자극지수는 phytohemagglutinin에 대해

서는 정상대조군에 비해 실험군 모두에서 유의한 증가를 나타냈으며 (p<0.01) concanaval

in A에 대해서는 외상단돌군은 감소(p<0.005)하고, cyclophosphamide 단독군은 증가(p<0.

025)한 반면 외상+cyclophosphamide군은 정상대조군과 유의한 차이가 없었다.

이상의 결과로 마우스에서 외상후 면역기능의 저하를 회복시키기 위한 목적에서 투여한

저용량 cyclophosphamide는 복막염유발에 의한 패혈증 사망률을 감소시킴을 관찰할 수

있었으며 약제투여에 따른 림프구 이외의 면역계 세포들의 변화를 알기위해서는 지속적인

연구가 뒤따라야 할 것이다.





Effect of Low-dose Cyclophosphamide against Sepsis in Traumatized Mice



Seung Ho Kim

Department of Medical Science

The Graduate School, Yonsei University

(Directed by Professor Jin Sik Min)



Severe, multicentric immune defects, associated with multiple trauma injury,

surgery and major burns, undoubtedly contribute to the increased risk of sepsis.

Suppressor cell activation appears to play a key role in immune suppression after

major injury. Prevention of such suppression may lead to improved survival in

trauma patients. Immunological studies suggest that low-dose cyclophosphamide

selectively inhibits the proliferation of suppressor T-cells.

In this study, hindlimb amputation in mice, followed by 24hrs by polymicrobial

septic challenge using cecal ligation and 23-gauge needle puncture (CLP) was

utilized to find survival benefit with low-dose cyclophosphamide(5.0 mg/kg) and

changes in blastogenesis activity of lymphocytes from experimental groups were

measured.

Nontraumatized (control) mice had a 31.6% survival rate after CLP; when

amputation was followed by CLP the survival rate decreased to 10.5%(p<0.025). When

mice were given low-dose cyclophosphamide before CLP, subsequent survival rates

were 36.8% in traumatized mice, 29.4% in nontraumatized mice, not statistically

different from the survival rate in control group. Significant rise in stimulation

index with phytohemagglutinin than normal control mice was noted in trauma only

group, cyclophosphamide only group and trauma+cyclophosphamide group(p<0.01).

Stimulation index with concanavalin A showed increase in cyclophosphamide only

group(p<0.025), decrease in trauma only group(p<0.005) and no difference in

trauma+cyclophosphamide group with normal control.

In conclusion, low-dose cyclophosphamide played as a immunomodulating drug aiming

at inhibiting suppressor cell activation or proliferation and appeared to improve

resistance to lethal infection after trauma in mice.
Full Text
https://ymlib.yonsei.ac.kr/catalog/search/book-detail/?cid=CAT000000046001
Files in This Item:
제한공개 원문입니다.
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학교실) > 2. Thesis
Yonsei Authors
Kim, Seung Ho(김승호)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/135181
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