중증 지역사회획득 폐렴환자의 예후에 영향을 미치는 면역지표에 대한 연구
Background : In the severe community-acquired pneumonia, it has been known that the immune status is occasionally suppressed. This study was performed to identify the immunologic markers related with the prognostic factors in severe community-acquired pneumonia. Methods : 23 patients with severe com...
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Published in | Tuberculosis and respiratory diseases Vol. 50; no. 4; pp. 437 - 449 |
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Main Authors | , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | Korean |
Published |
대한결핵 및 호흡기학회
30.04.2001
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Subjects | |
Online Access | Get full text |
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Summary: | Background : In the severe community-acquired pneumonia, it has been known that the immune status is occasionally suppressed. This study was performed to identify the immunologic markers related with the prognostic factors in severe community-acquired pneumonia. Methods : 23 patients with severe community-acquired pneumonia were involved in this study, and divided into survivor (16) and nonsurvivor (7) groups. In this study, the medical history, laboratory tests(complete blood counts, routine chemistry profile, immunoglobulins, complements, lymphocyte subsets, cytokines, sputum and blood culture, urine analysis), and chest radiographs were scrutinized. Results : 1) Both groups had lymphopenia(total lymphocyte count $995.6{\pm}505.7/mm^3$ in the survivor and $624.0{\pm}287.6/mm^3$ in the nonsurvivor group). 2) The T-lymphocyte count of the nonsurvivor group($295.9{\pm}203.0/mm^3$) was lower than the survivor group($723.6{\pm}406.5/mm^3$) (p<0.05). 3) The total serum protein(albumin) was $6.0{\pm}1.0(2.7{\pm}0.7)\;g/d{\ell}$ in the survivor and $5.2{\pm}1.5(2.3{\pm}0.8)g/d{\ell}$ in the nonsurvivor group. The BUN of the nonsurvivor group($41.7{\pm}30.0mg/d{\ell}$) was higher than that of the survivor group($18.9{\pm}9.8mg/d{\ell}$)(p<0.05). The creatinine concentration was higher in the nonsurvivor group($1.8{\pm}1.0mg/d{\ell}$) than that in the survivor group($1.0{\pm}0.3mg/d{\ell}$)(p<0.05). 4) The immunoglobulin G level was higher in the survivor group($1433.0{\pm}729.5mg/d{\ell}$) than in the nonsurvivor group($849.1{\pm}373.1mg/d{\ell}$) (p<0.05). 5) The complement $C_3$ level was $108.0{\pm}37.9mg/d{\ell}$ in the survivor group and $88.0{\pm}32.1mg/d{\ell}$ in the nonsurvivor group. 6) A cytokine study showed an insignificant difference in both groups. 7) Chronic liver disease, DM, and COPD were major underlying diseases in both groups. Conclusion : These results suggest that decreased a T-lymphocyte count and immunoglobulin G level, and an increased BUN and creatinine level may be associated with the poor prognosis of severe community-acquired pneumonia. 연구배경 : 중증 지역사회획득 폐렴환자에서 어떤 면역학적 요인이 중요한 예후 인자로 작용하는지와 그에 대한 예방과 개선방법을 알아보기 위해 연구를 시행하였다. 방 법 : 중증 폐렴환자 23명을 임상경과에 따라 회복군(n=16)과 사망군(n=7) 으로 나눈 후, 말초혈액에서 전혈구검사, 혈청 생화학검사, 면역글로블린, 보체, 림프구 아세포군 검사, 객담 및 혈액배양검사, 소변검사, 흉부 x-선 검사등을 시행하였다. 결 과 : 1) 양 군에서 말초혈액검사상 림프구감소증 소견이 있었다(림프구 평균 회복군 $995.6{\pm}505.7/mm^3$, 사망군 $624.0{\pm}287.6/mm^3$, p=0.18). 2) 양 군 모두 T 림프구가 감소되었고, 특히 사망군의 T 림프구수가 통계학적으로 유의하게 감소된 소견을 보여주었다(회복군 $723.6{\pm}406.5/mm^3$, 사망군 $295.9{\pm}203.0/mm^3$, p<0.05). 3) 혈청 생화학 검사상 단백질, 알부민이 정상치에 비해 감소되었으며(protein/ albumin 회복군 $6.0{\pm}1.0/2.7{\pm}0.7$, 사망군 $5.2{\pm}1.5/2.3{\pm}0.8$ 단위 : $g/d{\ell}$), 혈중 요소질소 수치는 회복군 $18.9{\pm}9.8mg/d{\ell}$, 사망군 $41.7{\pm}30.0mg/d{\ell}$으로 사망군에서 통계학적으로 의미있게 증가되었고(p<0.05), 혈청 크레아티닌은 회복군 $1.0{\pm}0.3mg/d{\ell}$, 사망군 $1.8{\pm}1.0mg/d{\ell}$으로, 사망군이 역시 의미있게 증가되어 있음을 보여주었다(p<0.05). 4) 면역글로블린 G는 회복군보다 사망군에서 유의하게 감소되어 있었다(IgG 회복군 $1433.0{\pm}729.5mg/d{\ell}$, 사망군 $849.1{\pm}373.1mg/d{\ell}$, p<0.05). 5) 보체 $C_3$, $C_4$의 수치가 모두 정상보다 떨어져 있었으며, 회복군에 비해 사망군에서 감소를 보였으나 통계학적 의의는 없었다. 6) Cytokine 연구 결과는 TNF-$\alpha$, IFN-$\gamma$, IL-2, IL-10을 측정하였으나 두 군간에 유의한 차이는 없었다. 7) 만성 간질환, 당뇨, 만성 폐쇄성 폐절환이 양 군에서 주요 기저질환이였다. 결 론 : 이상의 결과는 중증 지역사회획득 폐렴환자에서 T 림프구수치 특히, $T_8$ 림프구의 감소, $T_4/T_8$ 비율의 증가, 면역글로블린 G 감소, 혈중 요소질소 수치 증가, 혈청 크레아티닌이 증가된 소견은 나쁜 예후인자와 관련되는 것으로 추정된다. |
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Bibliography: | The Korean Academy of Tuberculosis and Respiratory Diseases KISTI1.1003/JNL.JAKO200132659247531 |
ISSN: | 1738-3536 2005-6184 |